CN113769183A - Blunt needle with reciprocating telescopic function for micro-plastic - Google Patents
Blunt needle with reciprocating telescopic function for micro-plastic Download PDFInfo
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- CN113769183A CN113769183A CN202111035362.0A CN202111035362A CN113769183A CN 113769183 A CN113769183 A CN 113769183A CN 202111035362 A CN202111035362 A CN 202111035362A CN 113769183 A CN113769183 A CN 113769183A
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- 229920003023 plastic Polymers 0.000 title claims abstract description 18
- 238000002347 injection Methods 0.000 claims abstract description 76
- 239000007924 injection Substances 0.000 claims abstract description 76
- 239000007788 liquid Substances 0.000 claims abstract description 57
- 230000007704 transition Effects 0.000 claims abstract description 30
- 230000007246 mechanism Effects 0.000 claims abstract description 17
- 238000009434 installation Methods 0.000 claims description 28
- 229910000831 Steel Inorganic materials 0.000 claims description 20
- 239000010959 steel Substances 0.000 claims description 20
- 238000007789 sealing Methods 0.000 claims description 18
- 230000005540 biological transmission Effects 0.000 claims description 13
- 230000000149 penetrating effect Effects 0.000 claims description 6
- 238000002316 cosmetic surgery Methods 0.000 claims description 5
- 238000001125 extrusion Methods 0.000 claims description 4
- 229920000426 Microplastic Polymers 0.000 claims 4
- 238000000034 method Methods 0.000 abstract description 21
- 238000000605 extraction Methods 0.000 abstract description 20
- 230000008569 process Effects 0.000 abstract description 18
- 238000003780 insertion Methods 0.000 abstract description 11
- 230000037431 insertion Effects 0.000 abstract description 11
- 238000007443 liposuction Methods 0.000 description 6
- 230000006835 compression Effects 0.000 description 5
- 238000007906 compression Methods 0.000 description 5
- 239000002537 cosmetic Substances 0.000 description 4
- 206010052428 Wound Diseases 0.000 description 2
- 208000027418 Wounds and injury Diseases 0.000 description 2
- 210000001789 adipocyte Anatomy 0.000 description 2
- 238000013459 approach Methods 0.000 description 2
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- 239000002245 particle Substances 0.000 description 2
- 230000002980 postoperative effect Effects 0.000 description 2
- 231100000241 scar Toxicity 0.000 description 2
- 230000004083 survival effect Effects 0.000 description 2
- 230000008733 trauma Effects 0.000 description 2
- KIUKXJAPPMFGSW-DNGZLQJQSA-N (2S,3S,4S,5R,6R)-6-[(2S,3R,4R,5S,6R)-3-Acetamido-2-[(2S,3S,4R,5R,6R)-6-[(2R,3R,4R,5S,6R)-3-acetamido-2,5-dihydroxy-6-(hydroxymethyl)oxan-4-yl]oxy-2-carboxy-4,5-dihydroxyoxan-3-yl]oxy-5-hydroxy-6-(hydroxymethyl)oxan-4-yl]oxy-3,4,5-trihydroxyoxane-2-carboxylic acid Chemical compound CC(=O)N[C@H]1[C@H](O)O[C@H](CO)[C@@H](O)[C@@H]1O[C@H]1[C@H](O)[C@@H](O)[C@H](O[C@H]2[C@@H]([C@@H](O[C@H]3[C@@H]([C@@H](O)[C@H](O)[C@H](O3)C(O)=O)O)[C@H](O)[C@@H](CO)O2)NC(C)=O)[C@@H](C(O)=O)O1 KIUKXJAPPMFGSW-DNGZLQJQSA-N 0.000 description 1
- 230000009471 action Effects 0.000 description 1
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Images
Classifications
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M1/00—Suction or pumping devices for medical purposes; Devices for carrying-off, for treatment of, or for carrying-over, body-liquids; Drainage systems
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M5/00—Devices for bringing media into the body in a subcutaneous, intra-vascular or intramuscular way; Accessories therefor, e.g. filling or cleaning devices, arm-rests
- A61M5/178—Syringes
- A61M5/31—Details
- A61M5/32—Needles; Details of needles pertaining to their connection with syringe or hub; Accessories for bringing the needle into, or holding the needle on, the body; Devices for protection of needles
Landscapes
- Health & Medical Sciences (AREA)
- Heart & Thoracic Surgery (AREA)
- Vascular Medicine (AREA)
- Engineering & Computer Science (AREA)
- Anesthesiology (AREA)
- Biomedical Technology (AREA)
- Hematology (AREA)
- Life Sciences & Earth Sciences (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Infusion, Injection, And Reservoir Apparatuses (AREA)
Abstract
The invention discloses a blunt needle with a reciprocating telescopic function for micro-plastic, which comprises a multifunctional needle seat matched and installed on a liquid discharge head of an injector, wherein the front end of the multifunctional needle seat is provided with an injection needle head which is hermetically connected with a liquid discharge port of the liquid discharge head through the multifunctional needle seat; the needle seat comprises a connecting seat, a columnar shell, a reciprocating assembly, a driving mechanism, a control sliding sleeve and a power assembly, wherein the tail end of the connecting seat is sleeved on the liquid discharge head in a matching manner, and the middle part of the front end of the connecting seat is axially provided with a transition passage communicated with the liquid discharge head; the invention has unique structure and convenient operation, effectively solves the problem that the conventional blunt needle needs to be manually controlled by a handheld needle doctor to carry out reciprocating forward and backward operation, can be required to carry out 360-degree multidirectional injection or extraction in the use process, and can finish large-area injection or extraction by single needle insertion, thereby effectively solving the problem that the conventional blunt needle can finish large-area extraction or injection by multiple needle insertions.
Description
Technical Field
The invention belongs to the technical field of medical cosmetology, and particularly relates to a blunt needle with a reciprocating telescopic function for micro-plastic surgery.
Background
Common items such as puncture, injection and the like cannot be separated in the medical cosmetic and cosmetology, such as clinical venipuncture, shaped fat autograft, hyaluronic acid injection, wrinkle removal and the like; the needles and devices for extraction and injection are different, and the damage to cells and medicines is also different; the traditional sharp needle is easy to damage cells, blood vessels, nerves and fibrous structures by extraction and injection, and is easy to cause blood stasis and swelling after operation. In addition, the sharp needle has short length and limited injection range, and can not inject deeper parts, thereby bringing technical limitation; the blunt needle is longer than the sharp needle, can reach 5-10cm, can reach a deeper position for injection or extraction, has relatively simple hierarchical control, has less strict operation requirements on medical care personnel, and has been widely accepted in the medical and cosmetic industries in recent years.
With the continuous pursuit and higher requirements of human on beauty, the precision and high efficiency of scar trauma and cosmetic plastic after clinical operation become the problems to be solved urgently; when the existing blunt needle is used for liposuction operation, forward and backward operations are adopted, a doctor manually controls the blunt needle to execute reciprocating forward and backward operations in the needle insertion process, the forward and backward amplitude is manually controlled, but fatigue is easily generated along with the extension of operation time, and the accuracy of forward and backward amplitude control is influenced, so that the operation risk is improved, and the body health of a liposuction patient is endangered; in addition, when the existing blunt needle is used, the top end of the blunt needle is provided with a liquid outlet, when the blunt needle is used for extraction or injection, the single extraction amount or the injection amount is less, and the large-area extraction or injection can be completed only by inserting the needle for many times, so that the postoperative wound of a patient is further aggravated.
Disclosure of Invention
Aiming at the defects and problems of the existing blunt needle, the invention provides a blunt needle with a reciprocating and stretching function for micro-plastic, the structure of the blunt needle is unique, the operation is convenient, the blunt needle can automatically reciprocate and stretch in the using process, so that the problem that the existing blunt needle needs to be manually controlled by a handheld needle doctor to reciprocate to advance and retreat can be effectively solved, 360-degree multidirectional injection or extraction can be required in the using process, large-area injection or extraction can be completed by single needle insertion, and the problem that the large-area extraction or injection can be completed by multiple needle insertion of the existing blunt needle can be effectively solved.
The technical scheme adopted by the invention for solving the technical problems is as follows: a blunt needle with reciprocating telescopic function for micro-plastic comprises a multifunctional needle seat matched and installed on a liquid discharge head of an injector, wherein the front end of the multifunctional needle seat is provided with an injection needle head which is hermetically connected with a liquid discharge port of the liquid discharge head through the multifunctional needle seat; the needle seat comprises a connecting seat, a columnar shell, a reciprocating assembly, a driving mechanism, a control sliding sleeve and a power assembly, wherein the tail end of the connecting seat is sleeved on the liquid discharge head in a matching manner, and the middle part of the front end of the connecting seat is axially provided with a transition passage communicated with the liquid discharge head; the tail end of the columnar shell is sleeved on the connecting seat in a matching mode, a columnar installation cavity communicated with the transition channel is arranged in the columnar shell on the front side of the connecting seat, and the installation cavity and the transition channel are coaxially arranged; the reciprocating assembly comprises a driving wheel set and a top support spring which are arranged in the mounting cavity, the driving wheel set comprises a fixed wheel and a driving wheel which are sleeved in the mounting cavity in a rotating mode from back to front at intervals, a needle penetrating hole communicated with the outside is formed in the middle of the front cavity wall of the mounting cavity on the front side of the driving wheel in an axial direction, the tail end of the injection needle is sleeved in the needle penetrating hole in a matching mode and sequentially penetrates through the driving wheel and the fixed wheel to be inserted into a transition channel of the connecting seat in a matching mode, and the driving wheel can drive the tail end of the injection needle to rotate and slide on the inner wall of the transition channel; a plurality of steel balls protruding outwards are symmetrically embedded on two end faces of the fixed wheel adjacent to the driving wheel at intervals along the circumference, and the jacking spring is installed in the installation cavity in a matching manner and can drive the driving wheel to axially slide along the inner wall of the installation cavity and be in jacking contact with the fixed wheel; the driving mechanism comprises a control sliding sleeve which is sleeved on the columnar shell in an axial sliding manner, a power assembly is arranged on the control sliding sleeve, and a driving end of the power assembly extends into the columnar shell and can be meshed with a driving wheel or a fixed wheel on the corresponding side along with the sliding of the control sliding sleeve; the installation cavity is also internally provided with a lock wheel component connected with the control sliding sleeve, and when the power component drives the fixed wheel or the driving wheel to rotate, the lock wheel component can be connected with another driving wheel or the fixed wheel to limit the rotation of the fixed wheel or the driving wheel.
The fixed wheel comprises a fixed gear which is rotatably sleeved in the mounting cavity, the middle part of the fixed gear is provided with a shaft hole, a shaft sleeve is sleeved in a matching manner, the injection needle passes through the shaft sleeve and is inserted into the transition channel, and the injection needle can freely rotate and freely axially slide in the fixed gear; a plurality of hemispherical mounting grooves are formed in the ring surface of the front end of the fixed gear at intervals along the circumference, and the steel balls are embedded in the mounting grooves in a matching manner and protrude outwards out of the mounting grooves; when the control sliding sleeve slides backwards along the columnar shell to the limit position, the driving end of the power assembly is meshed with the fixed gear.
The driving wheel comprises a driving gear which is rotatably sleeved in the mounting cavity at the front side of the fixed wheel, the driving gear can axially slide along the inner wall of the mounting cavity, the middle part of the driving gear is provided with a shaft hole, and the driving gear is fixedly sleeved on the injection needle head; the rear end ring surface of the moving gear is provided with a plurality of hemispherical mounting grooves at intervals along the circumference, and the steel balls are embedded in the mounting grooves in a matching manner and protrude outwards out of the mounting grooves; when the control sliding sleeve slides forwards to the limit position along the cylindrical shell, the driving end of the power assembly is meshed with the moving gear.
The control sliding sleeve comprises a sliding sleeve body which is sleeved on the columnar shell in a sliding mode, a driving cavity protruding in the radial direction is formed in the sliding sleeve body on the outer side of the driving wheel set, a strip-shaped transmission port communicated with the installation cavity is formed in the side wall, located in the driving cavity, of the columnar shell in the axial direction, the power assembly is arranged in the driving cavity, and the driving end of the power assembly extends into the installation cavity through the transmission port.
The power assembly comprises a driving gear which is rotationally fixed in the driving cavity, a driving motor is arranged on the inner wall of the driving cavity at one side of the driving gear, and a motor rotating shaft of the driving motor is in transmission connection with the driving gear; the teeth of the driving gear penetrate through the transmission port to enter the columnar shell and are meshed with the moving gear, and when the sliding sleeve body slides along the columnar shell in the backward axial direction, the sliding sleeve body can drive the driving gear to slide and separate along the teeth of the moving gear backward, so that the driving gear is meshed with the fixed gear.
The lock wheel assembly comprises lock rods, a fixed stop rod and a movable stop rod, the lock rods are axially fixed on the rear end face of the fixed wheel and the front end face of the driving wheel, strip-shaped sliding grooves are symmetrically and axially formed in the inner wall of the mounting cavity below the two lock rods, and the strip-shaped sliding grooves radially penetrate through the cylindrical shell outwards; the fixed stop lever and the movable stop lever are respectively fixed on the inner ring walls of the control sliding sleeve in the strip-shaped sliding grooves on the fixed wheel side and the moving wheel side, and the fixed stop lever and the movable stop lever can be driven to synchronously slide along the strip-shaped sliding grooves when the control sliding sleeve slides; the top ends of the fixed stop lever and the movable stop lever penetrate through the strip-shaped sliding grooves and extend into the mounting cavity of the fixed stop lever and the movable stop lever, and the fixed stop lever and the movable stop lever can slide along the control sliding sleeve to alternately enter or move out of a rotating route of the adjacent lock lever.
The injection needle comprises a needle stem, the tail end of the needle stem is sleeved in the needle penetrating hole in a matching mode, the tail end of the needle stem penetrates through the mounting cavity and is inserted into the transition channel of the connecting seat in a sealing mode, the top end of the needle stem is provided with a spherical needle point in a sealing mode, and a liquid outlet communicated with the inside is formed in the circumferential side wall of the needle stem on the rear side of the spherical needle point in the radial direction.
Two liquid outlets are formed in the circumferential side wall of the rear needle stem of the spherical needle point at intervals along the circumference, and the two liquid outlets are arranged at intervals along the axial direction.
The tail end of the connecting seat is axially provided with a fixing groove matched with the liquid discharge head, and the fixing groove is matched, sealed and nested on the liquid discharge head.
The inner ring arm of the fixing groove is provided with an annular groove along the circumference, and is provided with a sealing ring in a matching way, when the connecting seat is nested on the liquid discharge head in a matching way, the sealing ring in the fixing groove can be deformed by the extrusion of the connecting seat and the liquid discharge head.
The invention has the beneficial effects that: the blunt needle for micro-plastic with the reciprocating telescopic function provided by the invention has a unique structure, is matched with a multifunctional needle seat arranged on a liquid discharge head of an injector, and is provided with an injection needle head at the front end, and the injection needle head is hermetically connected with a liquid discharge port of the liquid discharge head through the multifunctional needle seat; when in use, the use modes of the multiple injection needles can be switched by controlling the multiple-function needle seat, and the use modes comprise: the first mode is a common blunt needle mode, the second mode is a reciprocating advancing and retreating mode, and the third mode is a reciprocating advancing and retreating rotating mode;
when switching to mode two, actuating mechanism in the multiple ability needle file can order about the automatic reciprocal flexible reciprocal advance and retreat operation of syringe needle through reciprocal subassembly, thereby when using the operation doctor only need through holding speed and the direction that syringe 1 control syringe needle deepened the tissue can, do not need the blunt needle of manual control to carry out reciprocal advance and retreat formula operation, the effectual operation degree of difficulty that inhales the fat has been reduced, and compare with the artifical manual reciprocal advance and retreat formula operation of carrying out of the in-process of advancing the needle, order about the automatic reciprocal range that advances more can accurate control of syringe needle through reciprocal subassembly, make the range of advancing and retreating all equal at every turn, thereby can effectual reduction operation risk.
When switching over to mode three, actuating mechanism in the multiple ability needle file can order about the syringe needle synchronous rotation when reciprocating the reciprocal advance and retreat operation of the automatic reciprocal flexible execution of syringe needle through reciprocal subassembly to the syringe needle is located the liquid outlet of organizing and can 360 omnidirectional to fat in the tissue aspirate, accomplishes the large tracts of land injection under the condition of less needle feeding, has improved operation efficiency.
The invention provides a blunt needle with reciprocating and stretching functions for micro-plastic, which has unique structure and convenient operation, and can automatically reciprocate and stretch in the using process, thereby effectively solving the problem that the conventional blunt needle needs to manually control the blunt needle to carry out reciprocating forward and backward operation by a handheld needle doctor, can be required to carry out 360-degree multidirectional injection or extraction in the using process, can complete large-area injection or extraction by single needle insertion, and effectively solving the problem that the conventional blunt needle can complete large-area extraction or injection by multiple needle insertions.
Drawings
FIG. 1 is a schematic diagram of the present invention.
Fig. 2 is an enlarged schematic view of the structure at a in fig. 1.
Fig. 3 is a schematic view of the connecting seat structure of the present invention.
Fig. 4 is a schematic perspective view of a cylindrical housing according to the present invention.
FIG. 5 is a schematic view of the internal structure of the cylindrical housing of the present invention.
Fig. 6 is a structural schematic diagram of the driving mechanism of the invention.
Fig. 7 is a schematic view of the driving chamber structure of the present invention.
FIG. 8 is a schematic view of the fixed gear structure of the present invention.
FIG. 9 is a schematic view of the moving gear structure of the present invention.
Fig. 10 is a schematic view of the drive mechanism mode adjustment process of the present invention.
Fig. 11 is a schematic view of the gear turning function closing process of the present invention.
FIG. 12 is a schematic view of the closing process of the moving gear rotation function of the present invention.
Fig. 13 is a schematic view of the compression adjustment mechanism of the present invention.
Fig. 14 is a schematic view of the threaded sleeve installation position of the present invention.
Figure 15 is a schematic view of the push-pull assembly of the present invention.
Figure 16 is a schematic view of the push-pull nut of the present invention.
Fig. 17 is a schematic view of a dual-outlet syringe needle structure according to the present invention.
Reference numbers in the figures: the injection device comprises a syringe 1, a liquid discharge head 11, a multifunctional needle seat 2, an injection needle 3, a needle stem 31, a spherical needle point 32, a liquid outlet 33, a connecting seat 4, a fixing groove 41, a transition channel 42, a columnar shell 5, an installation cavity 51, a needle hole 52, a transmission port 53, a limit ring platform A54, a limit ring platform B55, a bar-shaped sliding groove 56, a reciprocating assembly 6, a supporting spring 61, a fixed wheel 62, a fixed gear 621, a driving wheel 63, a moving gear 631, a steel ball 64, a driving mechanism 7, a control sliding sleeve 71, a driving cavity 72, a driving gear 73, a driving motor 74, a push-pull nut 811, a push-pull ring 813, a pull rod 814, a poking tooth 821, a threaded sleeve 821, a retaining ring 823, a push-push nut, a locking rod 91, a fixed retaining rod 92 and a moving retaining rod 93.
Detailed Description
The invention is further illustrated with reference to the following figures and examples.
Example 1
With the continuous pursuit and higher requirements of human on beauty, the precision and high efficiency of scar trauma and cosmetic plastic after clinical operation become the problems to be solved urgently; when the existing blunt needle is used for liposuction operation, forward and backward operations are adopted, a doctor manually controls the blunt needle to execute reciprocating forward and backward operations in the needle insertion process, the forward and backward amplitude is manually controlled, but fatigue is easily generated along with the extension of operation time, and the accuracy of forward and backward amplitude control is influenced, so that the operation risk is improved, and the body health of a liposuction patient is endangered; in addition, when the existing blunt needle is used, the top end of the blunt needle is provided with a liquid outlet, when the blunt needle is used for extraction or injection, the single extraction amount or the injection amount is less, and the large-area extraction or injection can be completed only by inserting the needle for many times, so that the postoperative wound of a patient is further aggravated.
To the problem that above-mentioned blunt needle exists, this embodiment provides a blunt needle that is used for little plastic to have reciprocal flexible function, and this blunt needle not only can effectually solve the problem that the blunt needle of present blunt needle need handheld needle doctor manual control to carry out reciprocal advance and retreat operation, but also can effectively solve the problem that present blunt needle need advance needle many times and just can accomplish large tracts of land extraction or injection. As shown in fig. 1-12, the blunt needle with reciprocating and telescoping functions for micro-plastic according to the present embodiment includes a multifunctional needle holder 2 mounted on a liquid discharge head 11 of an injection tube 1 in a matching manner, an injection needle 3 is disposed at the front side of the multifunctional needle holder, the injection needle 3 includes a needle stem 31, a spherical needle tip 32 is disposed at the top end of the needle stem 31 in a sealing manner, a liquid outlet 33 communicated with the inside is radially disposed on the circumferential side wall of the needle stem at the rear side of the spherical needle tip 32, and the tail end of the needle stem 31 is connected with the liquid discharge port of the liquid discharge head in a sealing manner through the multifunctional needle holder, so that when a plunger in the injection tube 1 is pushed, an injection in the injection tube enters the needle stem through the multifunctional needle holder 2 and is discharged from the liquid outlet; the needle point at the top end of the eccentric needle is spherical, so that the eccentric needle can smoothly shuttle in tissues.
As shown in fig. 5, the multifunctional needle holder 2 comprises a connecting seat 4, a columnar shell 5, a reciprocating assembly 6 and a driving mechanism 7, wherein the tail end of the connecting seat is sleeved on the liquid discharge head in a matching manner, and the middle part of the front end of the connecting seat is provided with a transition channel communicated with the liquid discharge head along the axial direction; the connecting seat 4 is of a columnar structure, a fixing groove 41 matched with the liquid discharge head 5 is formed in the tail end of the connecting seat 4 along the axial direction, the connecting seat is embedded on the liquid discharge head in a matching and sealing mode, and a columnar transition channel 42 communicated with the liquid discharge head is formed in the middle of the front end of the connecting seat 4 along the axial direction; furthermore, the inner ring arm of fixed slot is gone up to open along the circumference has the ring channel to the matching installs the sealing washer, after the connecting seat matches nestification on the flowing back head, the sealing washer in the fixed slot can receive the extrusion of connecting seat and flowing back head to produce deformation, thereby further strengthens the leakproofness between connecting seat 3 and the flowing back head.
The tail end of the columnar shell 5 is sleeved on the connecting seat in a matching mode, a columnar installation cavity 51 communicated with the transition channel is arranged in the columnar shell on the front side of the connecting seat, and the installation cavity 51 and the transition channel 42 are coaxially arranged and are communicated. As shown in fig. xx, the reciprocating assembly 6 comprises a driving wheel set and a top bracing spring 61 which are arranged in the mounting cavity 51, the driving wheel set comprises a fixed wheel 62 and a movable wheel 63 which are rotatably sleeved in the mounting cavity from back to front at intervals, a needle through hole 52 communicated with the outside is formed in the middle of the front cavity wall of the mounting cavity at the front side of the movable wheel 63 along the axial direction, the tail end of a needle stem 31 of the injection needle 3 is sleeved in the needle through hole 52 in a matching manner and sequentially penetrates through the movable wheel 63 and the fixed wheel 62 to be inserted into a transition channel of the connecting seat in a matching manner, and the outer annular surface of the needle stem is hermetically connected with the inner wall of the transition channel, so that an injection in the injection cylinder can be discharged into the needle stem through the transition channel and then discharged from a liquid outlet of the needle stem; furthermore, as shown in fig. xx, an annular sealing element is arranged in the front end channel of the transition channel 42 of the connecting seat 4 in a matching manner, the tail end of the needle stem penetrates through the sealing element to be inserted into the fixed channel in a matching manner, and the sealing element is deformed by the extrusion of the needle stem and the inner wall of the transition channel, so that the sealing strength between the outer annular surface of the eccentric needle head and the inner annular arm of the transition channel is enhanced on the premise of not influencing the rotation and sliding of the tail end of the eccentric needle head in the transition channel; and when using, the driving wheel can drive the tail end of the injection needle to rotate and slide on the inner wall of the transition channel, specifically:
as shown in fig. 5-9, the driving wheel 63 includes a driving gear 621 rotatably sleeved in the mounting cavity 51 at the front side of the fixed wheel 62, the driving gear 621 can axially slide along the inner annular wall of the mounting cavity 51, a shaft hole is formed in the middle of the driving gear 621, the driving gear is fixedly sleeved on the needle stem in the mounting cavity and is in key connection with the needle stem, and snap springs are symmetrically arranged on the needle stems at the front side and the rear side of the driving gear for limiting the axial position of the driving gear on the needle stem; when the moving gear 51 rotates, the needle stem can be driven to synchronously rotate in the installation cavity and the transition channel, and when the moving gear 51 axially moves along the inner annular wall of the installation cavity, the needle stem can also be synchronously driven to axially move; the fixed wheel 62 is including rotating the fixed gear 621 of suit in the installation cavity, and open at the middle part of fixed gear 621 has the shaft hole to the matching cover is equipped with the axle sleeve, and the syringe needle passes in the axle sleeve inserts transition passageway, and the syringe needle can be in fixed gear free rotation and free axial slip, thereby can not influence the driving wheel and order about needle stalk independent rotation and axial displacement.
As shown in fig. 6, a plurality of steel balls protruding outwards are symmetrically embedded on two end faces of the fixed wheel 62 adjacent to the moving wheel at intervals along the circumference, and the steel balls are fixed in various ways, such as: the ring surface of the rear end of the moving gear and the ring surface of the front end of the top gear are symmetrically and uniformly arranged with a plurality of hemispherical mounting grooves at intervals along the circumference, steel balls are embedded in the mounting grooves in a matching manner, and the steel balls protrude outwards out of the mounting grooves.
The jacking spring 61 is installed in the installation cavity 51 at the front side of the driving wheel in a matching manner, can drive the driven wheel to axially slide along the inner wall of the installation box and is in jacking contact with the fixed ring, so that steel balls on the driving wheel and the fixed wheel are alternatively jacked and contacted together.
Actuating mechanism includes along the control sliding sleeve 71 of axial sliding suit on cylindrical shell 5, is equipped with on the control sliding sleeve in the driving wheel group outside along radial convex drive chamber 72, and the mode of setting up of drive chamber 72 has the multiple, for example: one side of the middle part of the control sliding sleeve 71 is provided with a bulge which protrudes outwards along the radial direction, and the inner space of the bulge is a driving cavity 72 for installing a middle power assembly. A strip-shaped transmission port 53 communicated with the installation cavity is axially formed on the side wall of the columnar shell 5 positioned in the driving cavity 72; further, there are various ways to limit the control sleeve 7 to slide only in the axial direction of the cylindrical housing, such as: the circumference lateral wall of column shell 5 one side is equipped with along the axial along radial convex spacing, be equipped with along the axial on the interior anchor ring of control sliding sleeve 71 with the fibrous strip assorted guide way, when control sliding sleeve 71 matches the suit on column shell 5, the spacing cover bulge matches and inserts in the guide way to the slip direction of restriction control sliding sleeve 71, and further, overlap respectively on the column shell of control sliding sleeve 71 front and back both sides and be equipped with spacing ring platform A and spacing ring platform B for the gliding extreme position in restriction control sliding sleeve 71 front and back.
As shown in fig. 5, a power assembly is disposed on the control sliding sleeve 71, the power assembly is disposed in the driving cavity 72, and the driving end of the power assembly extends into the mounting cavity through the transmission opening, and can be engaged with the driving wheel or the fixed wheel on the corresponding side along with the sliding of the control sliding sleeve, specifically:
the power assembly comprises a driving gear 73 rotationally fixed in the driving cavity, a driving motor 74 is arranged on the inner wall of the driving cavity on one side of the driving gear 73, a motor rotating shaft of the driving motor 74 is in transmission connection with the driving gear, a control end of the driving motor extends out of the driving cavity through a lead and is connected with a driving power supply, and when the driving power supply is turned on, the driving motor drives the driving gear 73 to rotate directionally; the teeth of drive gear 73 pass through the transmission mouth and get into in the column shell, with the meshing of moving gear, and control slip table this moment is located the front end extreme position of slip orbit, when pushing control sliding sleeve backward along the column casing when sliding backward to extreme position, drive gear can follow the control sliding sleeve and follow the tooth that the control sliding sleeve meshed with moving gear and slide backward and mesh with the fixed gear to with moving gear separation, thereby order about fixed gear or driving wheel rotation alone through control sliding sleeve control power component selectivity.
Furthermore, a lock wheel assembly connected with the control sliding sleeve is arranged in the mounting cavity, and when the power assembly drives the fixed wheel or the driving wheel to rotate, the lock wheel assembly can be connected with the other driving wheel or the fixed wheel to limit the rotation of the fixed wheel or the driving wheel. As shown in FIG. 6, the lock wheel assembly comprises a lock rod, a fixed stop lever and a movable stop lever, the lock rod is axially fixed at the edges of the rear end face of the fixed wheel and the front end face of the movable wheel, the inner walls of the installation cavity below the two lock rods are respectively provided with a strip-shaped chute along the opposite direction, the two strip-shaped chutes are respectively positioned on the columnar shell in the control sliding sleeve and radially penetrate through the columnar shell, the fixed stop lever, the movable stop lever and the movable stop lever are respectively arranged in the strip-shaped chutes at the side of the fixed wheel and the side of the movable wheel, the tail ends of the fixed stop lever and the movable stop lever are respectively connected with the inner annular wall of the control sliding sleeve in the corresponding strip-shaped chute, when the control sliding sleeve slides back and forth along the columnar shell, the fixed stop lever and the movable stop lever can slide back and forth along the strip-shaped chutes, the top ends of the fixed stop lever and the movable stop lever can extend into the installation cavity through the strip-shaped chutes and the top ends of the fixed stop lever and the movable stop lever can alternatively enter or move out of the rotation route of the adjacent lock rods, specifically, the method comprises the following steps:
as shown in fig. 10-12, when the control sliding sleeve drives the fixed stop lever and the movable stop lever to slide backward along the outer annular wall of the cylindrical housing to the limit position, the control sliding sleeve 71 drives the fixed stop lever and the movable stop lever to slide forward synchronously, in the process, the fixed stop lever is gradually far away from the fixed wheel and moves out of the rotation path of the lock lever on the fixed wheel, so that the rotation function of the fixed wheel is opened, in the process, the movable stop lever approaches the movable wheel and enters the rotation path of the lock lever on the movable wheel, when the fixed wheel rotates, the fixed wheel drives the lock lever 91 on the fixed wheel to synchronously rotate and contact with the fixed stop lever 92 to fix the movable wheel, so that when the fixed wheel is driven by the power assembly to rotate, the movable wheel cannot rotate along with the fixed wheel due to the restriction of the lock lever on the front side of the movable stop lever, even if the rotation function of the movable wheel is closed; when the fixed wheel is driven by the power assembly to rotate in the state, under the thrust action of the jacking spring 61, the steel balls on the fixed wheel can roll along the steel balls on the driving wheel along with the fixed wheel, and the axial position of the fixed wheel is fixed, so that the steel balls on the fixed wheel can be pushed and pushed along the steel balls on the driving wheel in the rotating state, the injection needle head is driven to slide back and forth along the inner cavity wall of the mounting cavity in a reciprocating manner, the injection needle head can automatically stretch back and forth to execute reciprocating advancing and retreating operations when penetrating into tissues, and the advancing and retreating amplitudes are the same every time.
When the control sliding sleeve drives the fixed stop lever and the movable stop lever to slide forwards to the limit position along the outer ring wall of the columnar shell, the control sliding sleeve 71 drives the fixed stop lever and the movable stop lever to slide forwards synchronously, the fixed stop lever approaches to the fixed wheel and enters into the rotating route of the lock lever on the fixed wheel, when the fixed wheel rotates, the fixed wheel drives the lock lever 91 on the fixed wheel to rotate synchronously to contact with the fixed stop lever 92 to fix the fixed wheel, so that when the power assembly drives the driving wheel to rotate, the fixed wheel cannot rotate along with the driving wheel due to the limitation of the lock lever on the rear side of the fixed wheel and the fixed stop lever, even if the rotating function of the fixed wheel is closed, the driving wheel is driven to rotate by the power assembly alone, and when the driving wheel rotates under the state, due to the pushing of the jacking spring 61, the steel balls on the driving wheel in the rotating state roll along the fixed wheel, and the steel balls on the driving needle head automatically slide back and forth along the inner cavity wall of the installation cavity while driving the needle head to rotate, so that the telescopic device has the reciprocating telescopic function.
Compared with the existing blunt needle, the blunt needle with reciprocating telescopic function provided by the embodiment is used, the assembled blunt needle is matched and installed on the liquid discharge head of the injector and is connected with a control power supply to be directly used, the operation is convenient, the blunt needle with reciprocating telescopic function provided by the embodiment has three using modes, the first mode is a common blunt needle mode, the second mode is a reciprocating advancing and retreating mode, the third mode is a reciprocating advancing and retreating rotating mode, and when the blunt needle is used, the control sliding sleeve is operated according to requirements to adjust the power assembly, so that the using modes can be adjusted, for example: when the control power supply is in a closed state, the blunt needle with the reciprocating telescopic function provided by the embodiment can be used as a common blunt needle; when an operator uses the blunt needle with the reciprocating telescopic function provided by the embodiment to perform a fat suction operation, the control sliding sleeve can be pushed backwards to a limit position, so that the driving end of the power assembly is in transmission connection with the fixed wheel, the locking assembly can limit the rotating state of the driving wheel along with the movement of the control sliding sleeve and close the rotating function of the locking assembly, so that when a control power supply is turned on to drive the control driving motor 74 to start working, the control motor can drive the fixed wheel to rotate through the driving gear 73, when the fixed wheel rotates, the driving wheel can be pushed to drive the injection needle head to slide back and forth along the inner cavity wall of the mounting cavity in a reciprocating manner, the injection needle head can automatically extend back and forth in a reciprocating manner to perform reciprocating forward and backward movement operation, and when the operation is used, the operator only needs to hold the injection tube 1 to control the speed and direction of the injection needle head to penetrate into tissues, the blunt needle does not need to be manually controlled to perform reciprocating forward and backward movement type operation, and the fat suction operation difficulty is effectively reduced, compared with the manual reciprocating forward and backward operation in the needle inserting process, the reciprocating assembly drives the injection needle to automatically reciprocate, so that the forward and backward amplitude can be accurately controlled, the forward and backward amplitude at each time is equal, and the operation risk can be effectively reduced.
When a single needle insertion is needed to finish large-area liposuction operation, the control sliding sleeve is pushed forwards to a limit position, the driving end of the power assembly is in transmission connection with the driving wheel and is separated from the fixed wheel, the locking assembly can limit the rotation state of the fixed wheel along with the movement of the control sliding sleeve in the process, the rotation function of the fixed wheel is closed, and the rotation function of the driving wheel is opened, so that when a control power supply is switched on to drive the control driving motor 74 to start working, the control motor can drive the driving wheel to rotate through the driving gear 73, when the driving wheel rotates, the injection needle head can be driven to slide back and forth along the inner cavity wall of the installation cavity in a reciprocating manner to automatically stretch back and forth to perform reciprocating forward and backward operation, and in the process, the injection needle head can synchronously rotate along with the fixed wheel, so that a liquid outlet of the injection needle head in a tissue can suck fat in 360-direction, and large-area injection can be finished under the condition of less needle insertion, the operation efficiency is improved.
Example 2
Example 3
The difference between the embodiment 3 and the embodiment 2 is that, as shown in fig. 17, two liquid outlets 33 are formed on the circumferential side wall of the needle stem 31 at the rear side of the spherical needle point 32 of the injection needle at intervals along the circumference, and the two liquid outlets 33 are arranged at intervals along the axial direction, that is, are uniformly arranged along the spiral direction, compared with the embodiment 3, the eccentric needle of the embodiment is provided with two liquid outlets 53, which can increase the number of drug feeding points, complete injection or extraction in a large area in a short time, and reduce the number of needle feeding points; the two liquid outlets 53 have different distances from the spherical needle point and are spirally and uniformly arranged, the arrangement mode can convey the injection to the injection part in a 360-degree all-around uniform manner under the condition that the injection needle head does not rotate, the two liquid outlets have uniform distances, large-area injection filling such as face and chest can be met, large-area injection can be completed under the condition of less needle insertion, and the operation efficiency is improved; and because the liquid outlet is in the shape of a semicircular arc opening, liquid outlet is slow and uniform, the damage to tissue cells can be reduced, the survival rate can be improved, and fat cell particles can be slowly sucked in, and can not be scratched to puncture fat cells and improve the survival rate of the fat particles when in micro-plastic autologous fat transplantation.
Example 4
As shown in fig. 13 and 14, a compression adjusting mechanism is fittingly disposed on the injection needle at the front side of the cylindrical housing, the compression adjusting mechanism includes a threaded sleeve 821 slidably fitted over the needle stem 31 of the injection needle at the front side of the cylindrical housing, the threaded sleeve 821 is fixed to an end adjacent to the cylindrical housing, the needle stem 31 can rotate in the threaded sleeve 821, and the threaded sleeve and the cylindrical housing are fixed in various ways, for example, the threaded sleeve is directly welded to the cylindrical housing; the needle stem on the front side of the threaded sleeve 821 is provided with a retaining ring 822 at intervals, the leather-cutting sleeve on the threaded sleeve 821 is provided with a pushing nut 823, the top end of the pushing nut 823 extends forwards to form a threaded sleeve and is abutted with the back of the retaining ring 822, when the pushing nut 823 is rotated anticlockwise to drive the pushing nut 823 to move forwards along the threaded sleeve 821 to estimate the retaining ring 822, the retaining ring 822 can pull the fixed wheel in the installation cavity to slide forwards through the needle stem 31 to extrude the supporting spring 61, the overlapping degree of steel balls on the fixed wheel and steel balls on the driving wheel can be reduced along with the movement of the driving wheel in the process, and therefore when the driving wheel or the fixed wheel rotates, the amplitude of the reciprocating expansion of the injection needle driven by the driving wheel can be reduced synchronously; compare with embodiment 5, this embodiment can adjust the automatic reciprocal flexible range of syringe needle through compression adjustment mechanism when using, thereby can be according to the accurate blunt needle of adjusting of operation demand when carrying out reciprocal advance and retreat formula operation, advance and retreat the range, further the effectual operation degree of difficulty that reduces the liposuction, and compare with the artifical manual reciprocal advance and retreat formula operation of carrying out of needle in-process, order about the automatic reciprocal range that more can accurate control advance and retreat of syringe needle through reciprocal subassembly, make the range of advancing and retreating all equal at every turn, thereby can effectually reduce the operation risk.
Example 5
Embodiment 5 differs from embodiment 4 in that, as shown in fig. 15 and fig. 16, a push-pull assembly 81 is provided on the cylindrical housing at the rear side of the control sliding sleeve 71, the push-pull assembly 81 includes a push-pull nut 811, a pull ring 812 and a pull rod 813, an internal thread section is provided on the circumferential side wall of the cylindrical housing 5 at the front side of the control sliding sleeve 71, the push-pull nut 811 is fittingly sleeved on the internal thread section of the cylindrical housing 5 at the rear side of the control sliding sleeve 71 and can move along the rotation axis of the internal thread section, an annular sliding chute 814 is circumferentially provided on the circumferential side wall of the adjacent section of the push-pull nut and the control sliding sleeve 71, the pull ring 812 is fittingly sleeved in the annular sliding chute 814 and protrudes radially outward from the annular sliding chute 814, the pull ring 812 can rotate in the annular sliding chute 814 by itself, 4 pull rods 813 are circumferentially spaced on the circumferential side wall of the pull ring 812, the other end of the pull rod 831 is disposed toward the control sliding sleeve 71 and connected with the control sliding sleeve 71, and a limit ring table B for limiting the rearward sliding limit position of the control slide sleeve is provided on the internal thread section of the cylindrical housing 5 at the rear side of the push-pull nut 811.
When the push-pull nut 811 is rotated clockwise to drive the push-pull nut to move forward along the internal thread section of the cylindrical shell 5, the push-pull nut 811 can synchronously push the control sliding sleeve 71 to axially slide forward along the cylindrical shell 5 through the push-pull ring 812 and the pull rod 813, and when the control sliding sleeve 71 is in abutting contact with the limit ring platform A at the front side, the control sliding sleeve 71 is at the limit position of forward sliding, and at the moment, the driving gear in the drive cavity of the control sliding sleeve is meshed with the driving wheel; when the push-pull nut 811 is rotated anticlockwise to drive the push-pull nut to move backwards along the internal thread section of the cylindrical shell 5, the push-pull nut 811 can synchronously pull the control sliding sleeve 71 to axially slide backwards along the cylindrical shell 5 through the push-pull ring 812 and the pull rod 813, and when the push-pull nut 811 is abutted against the limit ring table B at the rear side, the control sliding sleeve 71 is at the limit position of backward sliding, and at the moment, the driving gear in the driving cavity of the control sliding sleeve is meshed with the fixed wheel; compared with the embodiment 3, when the blunt needle provided by the embodiment is used for adjusting the use mode, the push-pull assembly can drive the control sliding sleeve 71 to slide to adjust the use mode, and after the mode adjustment is completed, the push-pull nut and the cylindrical shell are in threaded connection in the push-pull assembly, so that the push-pull nut can limit the axial position of the control sliding sleeve through the pull rod 813 in the use process, the sliding of the control sliding sleeve in the use process is avoided, and the multifunctional needle base is damaged.
Example 6
Embodiment 6 differs from embodiment 5 in that, as shown in fig. 15, a plurality of shifting teeth 814 are uniformly provided on the circumferential side wall of the push-pull nut 811 along the circumference, and when the push-pull nut 811 is driven to rotate, the shifting teeth 814 can increase the friction between the hand and the push-pull nut, so as to facilitate the rotation of the push-pull nut.
Claims (10)
1. A blunt needle with reciprocating telescopic function for micro-plastic is characterized by comprising a multifunctional needle seat which is installed on a liquid discharge head of an injector in a matching way, wherein the front end of the multifunctional needle seat is provided with an injection needle head which is connected with a liquid discharge port of the liquid discharge head in a sealing way through the multifunctional needle seat; the needle seat comprises a connecting seat, a columnar shell, a reciprocating assembly, a driving mechanism, a control sliding sleeve and a power assembly, wherein the tail end of the connecting seat is sleeved on the liquid discharge head in a matching manner, and the middle part of the front end of the connecting seat is axially provided with a transition passage communicated with the liquid discharge head; the tail end of the columnar shell is sleeved on the connecting seat in a matching mode, a columnar installation cavity communicated with the transition channel is arranged in the columnar shell on the front side of the connecting seat, and the installation cavity and the transition channel are coaxially arranged; the reciprocating assembly comprises a driving wheel set and a top support spring which are arranged in the mounting cavity, the driving wheel set comprises a fixed wheel and a driving wheel which are sleeved in the mounting cavity in a rotating mode from back to front at intervals, a needle penetrating hole communicated with the outside is formed in the middle of the front cavity wall of the mounting cavity on the front side of the driving wheel in an axial direction, the tail end of the injection needle is sleeved in the needle penetrating hole in a matching mode and sequentially penetrates through the driving wheel and the fixed wheel to be inserted into a transition channel of the connecting seat in a matching mode, and the driving wheel can drive the tail end of the injection needle to rotate and slide on the inner wall of the transition channel; a plurality of steel balls protruding outwards are symmetrically embedded on two end faces of the fixed wheel adjacent to the driving wheel at intervals along the circumference, and the jacking spring is installed in the installation cavity in a matching manner and can drive the driving wheel to axially slide along the inner wall of the installation cavity and be in jacking contact with the fixed wheel; the driving mechanism comprises a control sliding sleeve which is sleeved on the columnar shell in an axial sliding manner, a power assembly is arranged on the control sliding sleeve, and a driving end of the power assembly extends into the columnar shell and can be meshed with a driving wheel or a fixed wheel on the corresponding side along with the sliding of the control sliding sleeve; the installation cavity is also internally provided with a lock wheel component connected with the control sliding sleeve, and when the power component drives the fixed wheel or the driving wheel to rotate, the lock wheel component can be connected with another driving wheel or the fixed wheel to limit the rotation of the fixed wheel or the driving wheel.
2. The blunt needle with reciprocating retraction function for micro plastic surgery according to claim 1 wherein the fixed wheel comprises a fixed gear rotatably sleeved in the mounting cavity, the middle part of the fixed gear is provided with a shaft hole and is sleeved with a shaft sleeve in a matching manner, the injection needle passes through the shaft sleeve and is inserted into the transition passage, and the injection needle can freely rotate and freely axially slide in the fixed gear; a plurality of hemispherical mounting grooves are formed in the ring surface of the front end of the fixed gear at intervals along the circumference, and the steel balls are embedded in the mounting grooves in a matching manner and protrude outwards out of the mounting grooves; when the control sliding sleeve slides backwards along the columnar shell to the limit position, the driving end of the power assembly is meshed with the fixed gear.
3. The blunt needle with reciprocating retraction function for micro plastic surgery as claimed in claim 1, wherein the moving wheel comprises a moving gear rotatably sleeved in the mounting cavity at the front side of the fixed wheel and capable of sliding axially along the inner wall of the mounting cavity, the moving gear has a shaft hole at the middle part and is fixedly sleeved on the injection needle; the rear end ring surface of the moving gear is provided with a plurality of hemispherical mounting grooves at intervals along the circumference, and the steel balls are embedded in the mounting grooves in a matching manner and protrude outwards out of the mounting grooves; when the control sliding sleeve slides forwards to the limit position along the cylindrical shell, the driving end of the power assembly is meshed with the moving gear.
4. The blunt needle with reciprocating retraction function for micro plastic surgery as claimed in claim 1, wherein the control sliding sleeve comprises a sliding sleeve body slidably fitted on the cylindrical housing, a driving cavity protruding in the radial direction is provided on the sliding sleeve body outside the driving wheel set, a strip-shaped driving port communicated with the mounting cavity is axially provided on the side wall of the cylindrical housing located in the driving cavity, the power assembly is provided in the driving cavity, and the driving end of the power assembly extends into the mounting cavity through the driving port.
5. The blunt needle with reciprocating retraction for micro-plastic according to claim 4, wherein the power assembly comprises a driving gear rotationally fixed in the driving cavity, a driving motor is arranged on the inner wall of the driving cavity at one side of the driving gear, and a motor rotating shaft of the driving motor is in transmission connection with the driving gear; the teeth of the driving gear penetrate through the transmission port to enter the columnar shell and are meshed with the moving gear, and when the sliding sleeve body slides along the columnar shell in the backward axial direction, the sliding sleeve body can drive the driving gear to slide and separate along the teeth of the moving gear backward, so that the driving gear is meshed with the fixed gear.
6. The blunt needle with reciprocating retraction function for micro-plastic according to claim 1, wherein the lock wheel assembly comprises a lock rod, a fixed stop rod and a movable stop rod, the lock rod is axially fixed on the rear end surface of the fixed wheel and the front end surface of the movable wheel, strip-shaped slide grooves are symmetrically axially formed on the inner wall of the mounting cavity below the two lock rods, and the strip-shaped slide grooves radially penetrate through the cylindrical shell outwards; the fixed stop lever and the movable stop lever are respectively fixed on the inner ring walls of the control sliding sleeve in the strip-shaped sliding grooves on the fixed wheel side and the moving wheel side, and the fixed stop lever and the movable stop lever can be driven to synchronously slide along the strip-shaped sliding grooves when the control sliding sleeve slides; the top ends of the fixed stop lever and the movable stop lever penetrate through the strip-shaped sliding grooves and extend into the mounting cavity of the fixed stop lever and the movable stop lever, and the fixed stop lever and the movable stop lever can slide along the control sliding sleeve to alternately enter or move out of a rotating route of the adjacent lock lever.
7. The blunt needle with reciprocating retraction function for micro-plastic according to claim 1, wherein the injection needle comprises a needle stem, the tail end of the needle stem is fittingly sleeved in the needle-passing hole, the tail end of the needle stem passes through the mounting cavity and is sealingly inserted into the transition channel of the connecting seat, the top end of the needle stem is provided with a spherical needle point in a sealing manner, and the circumferential side wall of the needle stem at the rear side of the spherical needle point is radially provided with a liquid outlet communicated with the inside.
8. The blunt needle with reciprocating retraction function for micro-plastic according to claim 7, wherein two liquid outlets are provided on the circumferential side wall of the needle stem at the rear side of the spherical needle tip at intervals along the circumference, and the two liquid outlets are arranged at intervals along the axial direction.
9. The blunt needle with reciprocating retraction for micro plastic surgery as claimed in claim 1, wherein the connecting seat has a fixing groove at the end along the axial direction, and the fixing groove is matched with the liquid discharge head and is embedded on the liquid discharge head in a matching and sealing manner.
10. The blunt needle with reciprocating retraction and extension function for micro-plastic according to claim 8, wherein the inner ring arm of the fixing groove is circumferentially provided with an annular groove and is fittingly installed with a sealing ring, and when the connecting seat is fittingly nested on the liquid discharge head, the sealing ring in the fixing groove is deformed by the extrusion of the connecting seat and the liquid discharge head.
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| CN202111035362.0A CN113769183B (en) | 2021-09-06 | 2021-09-06 | A blunt needle that is used for micro plastic to have reciprocal flexible function |
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| CN202111035362.0A CN113769183B (en) | 2021-09-06 | 2021-09-06 | A blunt needle that is used for micro plastic to have reciprocal flexible function |
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| CN113769183B CN113769183B (en) | 2024-07-02 |
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| CN216908828U (en) * | 2021-09-06 | 2022-07-08 | 郑州普湾医疗技术有限公司 | Double-hole blunt needle with reciprocating telescopic function for micro-plastic |
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| DE4034673A1 (en) * | 1990-09-27 | 1992-04-02 | Bader & Partner Medizintechnik | Syringe for medical use - in which unauthorised further use is automatically prevented e.g. by blade which penetrates syringe wall during first use etc. |
| KR101275917B1 (en) * | 2012-02-16 | 2013-06-17 | 권혁호 | Dual purpose pen type device for ultrasound guided fine needle aspiration and core needle biopsy |
| WO2016173367A1 (en) * | 2015-04-28 | 2016-11-03 | 苏州施莱医疗器械有限公司 | Disposable secure insulin injection needle |
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| CN113769183B (en) | 2024-07-02 |
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