CN112089514A - Coaxial drive type intravascular stent conveying system - Google Patents
Coaxial drive type intravascular stent conveying system Download PDFInfo
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- CN112089514A CN112089514A CN201910526157.0A CN201910526157A CN112089514A CN 112089514 A CN112089514 A CN 112089514A CN 201910526157 A CN201910526157 A CN 201910526157A CN 112089514 A CN112089514 A CN 112089514A
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- 230000002792 vascular Effects 0.000 claims abstract description 17
- 210000004204 blood vessel Anatomy 0.000 claims description 35
- 238000011084 recovery Methods 0.000 claims description 20
- 238000001802 infusion Methods 0.000 claims description 7
- 230000003247 decreasing effect Effects 0.000 claims description 4
- 239000002184 metal Substances 0.000 claims description 3
- 239000004033 plastic Substances 0.000 claims description 3
- 238000004064 recycling Methods 0.000 claims description 2
- 230000000694 effects Effects 0.000 abstract description 3
- 238000000034 method Methods 0.000 description 5
- 230000003902 lesion Effects 0.000 description 3
- 208000031481 Pathologic Constriction Diseases 0.000 description 2
- 230000001419 dependent effect Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000002427 irreversible effect Effects 0.000 description 2
- 230000036262 stenosis Effects 0.000 description 2
- 208000037804 stenosis Diseases 0.000 description 2
- 238000005452 bending Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 239000003814 drug Substances 0.000 description 1
- 229940079593 drug Drugs 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000000704 physical effect Effects 0.000 description 1
- 238000003672 processing method Methods 0.000 description 1
- 230000002966 stenotic effect Effects 0.000 description 1
- 238000001356 surgical procedure Methods 0.000 description 1
- 238000012800 visualization Methods 0.000 description 1
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Classifications
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
- A61F2/95—Instruments specially adapted for placement or removal of stents or stent-grafts
- A61F2/962—Instruments specially adapted for placement or removal of stents or stent-grafts having an outer sleeve
- A61F2/966—Instruments specially adapted for placement or removal of stents or stent-grafts having an outer sleeve with relative longitudinal movement between outer sleeve and prosthesis, e.g. using a push rod
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
- A61F2/95—Instruments specially adapted for placement or removal of stents or stent-grafts
- A61F2/962—Instruments specially adapted for placement or removal of stents or stent-grafts having an outer sleeve
- A61F2/97—Instruments specially adapted for placement or removal of stents or stent-grafts having an outer sleeve the outer sleeve being splittable
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- Health & Medical Sciences (AREA)
- Engineering & Computer Science (AREA)
- Biomedical Technology (AREA)
- Cardiology (AREA)
- Oral & Maxillofacial Surgery (AREA)
- Transplantation (AREA)
- Heart & Thoracic Surgery (AREA)
- Vascular Medicine (AREA)
- Life Sciences & Earth Sciences (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Media Introduction/Drainage Providing Device (AREA)
Abstract
The invention discloses a coaxial driving type intravascular stent conveying system, and belongs to the technical field of intravascular stent conveying. The device comprises an operating device, an ejection device and a retraction device; the operating device consists of a rotating handle and a fixed pipe; the ejection device consists of an inner tube, a fixed column, an ejection tube and a conical head; the retraction device is composed of a threaded pipe, a transfusion pipe, a three-way joint and an outer sheath pipe. The rotating handle rotates relative to the fixing tube, the inner tube and the ejection tube move downwards relative to the fixing tube to eject the vascular stent downwards, the outer sheath tube retracts upwards relative to the fixing tube, and the ejection tube and the outer sheath tube are synchronously matched, so that the vascular stent can be accurately released to a preset position; compared with the existing releasing equipment, the releasing position of the intravascular stent is determined once the lower end part of the sheath tube reaches a specific position without depending on the operation experience of a doctor, so that the releasing equipment has a good reappearing effect, reduces the operation difficulty and shortens the operation time.
Description
Technical Field
The invention relates to a coaxial driving type intravascular stent conveying system, and belongs to the technical field of intravascular stent conveying.
Background
The application of the blood vessel stent as the current main treatment method of blood vessel stenosis is more and more extensive in clinic. Generally, vascular stents can be classified into laser-cut stents and braided stents according to the processing method. The blood vessel stent delivery system is a delivery system which can deliver blood vessel stents to stenotic lesions and accurately release the blood vessel stents.
At present, the braided stent has better flexibility, can be widely applied by bending a serious blood vessel without causing secondary damage to the blood vessel by folding. Due to its product characteristics, a braided stent must be elongated and placed within a relatively small diameter outer sheath for introduction into a blood vessel during a surgical procedure. During operation, the drug is delivered to a lesion site through the outer sheath and then released to support a blood vessel at a stenosis. However, due to the physical properties of the current vascular stent, the length of the vascular stent is retracted during the release process, so that the release position of the vascular stent is shifted during the operation, and the operation risk is easily increased. The current delivery system is highly dependent on the operation experience and manipulation of the doctor.
Therefore, a novel blood vessel stent conveying system is designed to achieve the purposes of reducing the difficulty and risk of the operation and reducing the risk of the operation.
Disclosure of Invention
The technical problem to be solved by the invention is as follows: the coaxial driving type blood vessel stent conveying system is provided, and solves the problems that blood vessel stent releasing products in the current market are highly dependent on the operation experience of doctors and cannot be operated accurately.
The technical problem to be solved by the invention is realized by adopting the following technical scheme:
a coaxial driving type blood vessel stent conveying system comprises an operating device, an ejection device and a retraction device;
the operating device comprises a rotating handle and a fixed pipe, the lower end of the rotating handle is movably fixed with the upper end of the fixed pipe, the rotating handle freely rotates relative to the fixed pipe, the inner wall of the rotating handle is provided with an ejecting groove thread, the inner wall of the rotating handle close to the fixed pipe is provided with a returning convex tooth, and the body of the fixed pipe is provided with a returning sliding groove hole along the axial direction;
the ejection device comprises an inner tube, a fixed column, an ejection tube and a conical head, the ejection tube is fixed below the fixed column, ejection convex teeth are arranged on the outer side of the fixed column, the inner tube is arranged in the fixed column and the ejection tube, the conical head is fixed at the bottom of the inner tube, and a blood vessel support is sleeved on the inner tube between the conical head and the ejection tube;
the retraction device consists of a threaded pipe, a transfusion pipe, a three-way joint and an outer sheath pipe;
a backspacing groove thread is arranged outside the screwed pipe, an ejection sliding groove hole along the axis direction is arranged on the pipe body of the screwed pipe, the bottom of the screwed pipe is connected with a three-way joint, the bottom of the three-way joint is connected with an outer sheath pipe, and a transfusion pipe is connected with the side port of the three-way joint;
the screwed pipe is placed in the fixed pipe and the rotating handle, the infusion pipe extends out of the backspacing sliding groove hole, the outer sheath pipe extends out of the bottom of the fixed pipe, and backspacing convex teeth on the inner wall of the rotating handle are in threaded fit with backspacing grooves on the outer part of the screwed pipe;
the fixed column is placed in the threaded pipe, the ejection pipe is inserted into the three-way joint and the outer sheath pipe, a rubber ring sealed with the outer wall of the ejection pipe is arranged in the upper port of the three-way joint, the lower port of the outer sheath pipe is sealed by the conical head, the blood vessel support is positioned between the inner pipe and the outer sheath pipe, and ejection convex teeth on the outer side of the fixed column extend out of an ejection sliding groove hole of the threaded pipe and are in threaded fit with ejection grooves on the inner wall of the rotating handle;
when the rotating handle rotates relative to the fixed pipe, the backspacing convex teeth drive the backspacing device to retract upwards, and the ejecting convex teeth drive the ejecting device to extend.
In a preferred embodiment, the lower end of the outer sheath is provided with a developing point.
As a preferred example, the upper end of the inner pipe is provided with an inner pipe connecting piece.
As a preferable example, a circle of convex ribs are arranged on the inner side of the lower end of the rotating handle, a groove matched with the convex ribs is arranged on the outer portion of the upper end of the fixed pipe, and the rotating handle freely rotates in the groove of the fixed pipe through the convex ribs.
As a preferred example, the threaded pipe is a threaded pipe of a whole structure or a threaded pipe connected in a segmented manner.
In a preferred embodiment, the lower end of the ejection tube is fixed with a recovery device, the recovery device is a tube body, the upper end of the tube body is fixed at the lower end of the ejection tube, the outer side of the tube orifice at the other end is provided with a plurality of raised fixing teeth, the blood vessel support is sleeved outside the recovery device, and the fixing teeth are clamped in the mesh of the blood vessel support.
Preferably, the recycling device is a tube made of plastic or metal.
As a preferred example, the ejection groove thread is an equidistant thread or a variable pitch thread with a gradually decreasing pitch from bottom to top.
As a preferred example, the back-off groove thread is an equidistant thread or a variable pitch thread with a pitch gradually decreasing from top to bottom.
The operating device, the ejection device and the retraction device are on the same axis, so the coaxial driving type blood vessel stent conveying system is called.
The invention has the beneficial effects that:
(1) the rotating handle rotates relative to the fixing tube, the inner tube and the ejection tube move downwards relative to the fixing tube to eject the vascular stent downwards, the outer sheath tube retracts upwards relative to the fixing tube, and the ejection tube and the outer sheath tube are synchronously matched, so that the vascular stent can be accurately released to a preset position;
(2) compared with the existing releasing equipment, the releasing position of the intravascular stent is determined once the lower end part of the sheath tube reaches a specific position without depending on the operation experience of a doctor to a high degree, so that the releasing equipment has a good reappearing effect, reduces the operation difficulty and shortens the operation time;
(3) before the vascular stent is not completely released, if errors occur in the release position, the rotating handle can be rotated reversely, the vascular stent is reversely pulled back into the outer sheath tube through the fixing teeth of the recovery device, the vascular stent can be adjusted after being recovered and released again, the release process of the current vascular stent is generally irreversible, the vascular stent needs to be removed after error, and the recovery device can reduce the operation difficulty and risk.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic structural view of an operating device;
FIG. 3 is a schematic structural diagram of the ejection device;
FIG. 4 is a schematic view of a connection structure of the retraction device;
FIG. 5 is a schematic structural view of a threaded pipe;
FIG. 6 is a schematic view showing a structure in which a threaded pipe is placed inside an operating device;
FIG. 7 is a schematic view of the structure of the rotating handle driven retracting device;
FIG. 8 is a schematic view of the retraction device being placed into the fixed tube;
FIG. 9 is a schematic structural view of a seal between the ejector tube and the tee fitting;
FIG. 10 is a schematic view showing the structure of the ejector device inserted into the threaded pipe
FIG. 11 is a perspective view of the ejector device being placed into a threaded pipe;
FIG. 12 is a schematic structural view of an internal ejection device driven by a rotating handle;
FIG. 13 is a schematic structural diagram of a process of releasing a stent by matching the inner and outer tubes.
In the figure: the device comprises an operating device 1, a rotating handle 11, a fixed tube 12, an ejection groove thread 13, a retraction convex tooth 14, a retraction sliding groove hole 15, a convex rib 16, a groove 17, an ejection device 2, an inner tube 21, a fixed column 22, an ejection tube 23, a conical head 24, an ejection convex tooth 25, an inner tube connecting piece 26, a retraction device 3, a threaded tube 31, a transfusion tube 32, a tee joint 33, an outer sheath tube 34, a retraction groove thread 35, an ejection sliding groove hole 36, a rubber ring 37, a blood vessel support 4, a recovery device 5 and a fixed tooth 51.
Detailed Description
In order to make the technical means, the original characteristics, the achieved purpose and the efficacy of the invention easy to understand, the invention is further described with reference to the specific drawings.
Since the delivery system is vertically disposed in the figure, the term "lower end" and "bottom" are referred to as medical "proximal end" and "upper end" is referred to as medical "distal end", and the length of the inner tube 21, the length of the ejector tube 23, and the length of the outer sheath tube 34 in the actual product are longer, and are omitted for convenience of illustration in the same figure.
As shown in figure 1, the coaxial driving type blood vessel stent conveying system comprises an operating device 1, an ejection device 2 and a retraction device 3.
As shown in fig. 2, the operating device 1 is composed of a rotating handle 11 and a fixed tube 12, the lower end of the rotating handle 11 is movably fixed with the upper end of the fixed tube 12, the rotating handle 11 freely rotates relative to the fixed tube 12, the inner wall of the rotating handle 11 is provided with an ejecting groove thread 13, the inner wall of the rotating handle 11 close to the fixed tube 12 is provided with a withdrawing convex tooth 14, and the tube body of the fixed tube 12 is provided with a withdrawing slide slot hole 15 along the axial direction.
As shown in fig. 3, the ejection device 2 is composed of an inner tube 21, a fixed column 22, an ejection tube 23 and a conical head 24, the ejection tube 23 is fixed below the fixed column 22, the ejection convex teeth 25 are arranged on the outer side of the fixed column 22, the inner tube 21 is arranged inside the fixed column 22 and the ejection tube 23, the conical head 24 is fixed at the bottom of the inner tube 21, and the blood vessel stent 4 is sleeved on the inner tube 21 between the conical head 24 and the ejection tube 23; the upper end of the inner pipe 21 is provided with an inner pipe connecting piece 26.
As shown in fig. 4 and 5, the retraction device 3 is composed of a threaded tube 31, an infusion tube 32, a three-way joint 33, and an outer sheath tube 34;
the outside of the threaded pipe 31 is provided with a backspacing groove thread 35, the pipe body of the threaded pipe 31 is provided with an ejection sliding groove hole 36 along the axial direction, the bottom of the threaded pipe 31 is connected with a three-way joint 33, the bottom of the three-way joint 33 is connected with an outer sheath pipe 34, and the infusion pipe 32 is connected with the side port of the three-way joint 33.
The threaded pipe 31 is a threaded pipe 31 with an integral structure, or the threaded pipe 31 is connected in a sectional mode, and the sectional mode can be spliced according to the requirement.
As shown in fig. 6-8, the threaded tube 31 is placed inside the fixed tube 12 and the rotary handle 11, the infusion tube 32 extends from the retraction slide slot hole 15, the outer sheath tube 34 extends from the bottom of the fixed tube 12, and the retraction convex teeth 14 on the inner wall of the rotary handle 11 are matched with the retraction concave groove threads 35 on the outer part of the threaded tube 31; a circle of convex ribs 16 are arranged on the inner side of the lower end of the rotating handle 11, a groove 17 matched with the convex ribs 16 is arranged on the outer portion of the upper end of the fixed pipe 12, and the rotating handle 11 freely rotates in the groove 17 of the fixed pipe 12 through the convex ribs 16.
As shown in fig. 9-13, the fixing post 22 is placed inside the threaded tube 31, the ejecting tube 23 is inserted into the three-way joint 33 and the outer sheath tube 34, the rubber ring 37 sealed with the outer wall of the ejecting tube 23 is arranged in the upper port of the three-way joint 33, the conical head 24 seals the lower port of the outer sheath tube 34, the blood vessel stent 4 is positioned between the inner tube 21 and the outer sheath tube 34, and the ejecting convex teeth 25 on the outer side of the fixing post 22 extend out from the ejecting slide groove hole 36 of the threaded tube 31 to be matched with the ejecting concave thread 13 on the inner wall of the rotating handle 11.
A developing point (not shown) is provided at the lower end of the sheath tube 34. Facilitating intraoperative visualization of the location of the proximal end of sheath 34.
As shown in fig. 13, the recovery device 5 is fixed at the lower end of the ejection tube 23, the recovery device 5 is a tube body, the upper end of the tube body is fixed at the lower end of the ejection tube 23, a plurality of raised fixing teeth 51 are arranged outside the tube orifice at the other end, the blood vessel support 4 is sleeved outside the recovery device 5, and the fixing teeth 51 are clamped in the mesh orifice of the blood vessel support 4. The recovery device 5 is made of plastic or metal. The outer diameter of the upper end of the pipe body of the recovery device 5 is equal to the inner diameter of the top outlet pipe 23, the upper end of the recovery device 5 is fixed in the top outlet pipe 23, and the inner pipe 21 penetrates through the interior of the recovery device 5. The rotating handle 11 is rotated reversely, and the blood vessel support 4 is pulled back into the sheath tube 34 reversely by the fixing teeth 51 of the recovery device 5.
The working principle is as follows: when the rotating handle 11 rotates relative to the fixed pipe 22, the retraction convex teeth 14 drive the retraction device 3 to retract upwards, and the ejection convex teeth 25 drive the ejection device 2 to extend downwards.
During operation, the blood vessel support 4 is conveyed to a lesion part through the outer sheath tube 34, the inner tube 21 and the ejection tube 23, the infusion tube 32 is used for infusion, and the rubber ring 37 is used for preventing liquid from leaking from a gap between the ejection tube 23 and the three-way joint 33; the fixed tube 12 is fixed, the rotating handle 11 is rotated, the outer sheath tube 34 is contracted, the ejection tube 23 is extended forwards, and the vascular stent 4 is ejected and released. The inner tubing connector 26 is used to connect and operate the inner tubing 21, the ratio of displacement of the outer sheath 34 retraction and the ejector 23 advancement is controlled by the different thread ratios between the retraction groove thread 35 and the ejector groove thread 13.
The inner tube 21 and the ejection tube 23 move downwards relative to the fixed tube 12 by rotating the rotating handle 11 relative to the fixed tube 12, the intravascular stent 4 is ejected downwards, the outer sheath tube 34 retracts upwards relative to the fixed tube 12, the relative movement distance between the outer sheath tube 34 and the inner tube 21 can be accurately mastered (the scales are marked by the inner tube 21 or the number of rotating turns of the rotating handle 11 is recorded by the matching of the insections, the relative movement distance between the inner tube and the outer sheath tube can be determined), and the ejection tube 23 and the outer sheath tube 34 are synchronously matched, so the intravascular stent 4 can be accurately released to a preset position; compared with the existing releasing equipment, the releasing position of the blood vessel support 4 is determined once the lower end part of the outer sheath tube 34 reaches a specific position without depending on the operation experience of a doctor, so that the releasing equipment has a good reappearing effect, reduces the operation difficulty and shortens the operation time. Before the vessel stent 4 is not completely released, if errors occur in the release position, the rotating handle 11 can be reversely rotated, the vessel stent 4 is reversely pulled back into the sheath tube 34 through the fixing teeth 51 of the recovery device 5, the adjustment is made after the recovery, the vessel stent can be released again, the release process of the current vessel stent 4 is generally irreversible, the vessel stent needs to be removed through an operation after error, and the recovery device 5 can reduce the operation difficulty and risk. The thread pitch of the ejecting groove thread 13 is gradually reduced from bottom to top, the thread pitch of the backspacing groove thread 35 is gradually reduced from top to bottom (equidistant threads are shown in the figure, and the thread pitch of the variable pitch threads is gradually changed on the basis), under the condition that the rotating handle 11 is driven at a constant speed, when the vascular stent 4 is just released, the ejecting pipe 23 and the outer sheath pipe 34 move at a slow speed, the release speed of the vascular stent 4 is also slow, whether the release position is accurate or not can be conveniently observed, once the release speed is gradually accelerated after the error is determined, the efficiency can be improved, the whole operation time can be shortened, and the operation risk can be reduced.
The foregoing shows and describes the general principles and broad features of the present invention and advantages thereof. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, and that various changes and modifications may be made without departing from the spirit and scope of the invention as defined in the appended claims. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (9)
1. A coaxial driving type vascular stent conveying system is characterized by comprising an operating device, an ejection device and a retraction device;
the operating device comprises a rotating handle and a fixed pipe, the lower end of the rotating handle is movably fixed with the upper end of the fixed pipe, the rotating handle freely rotates relative to the fixed pipe, the inner wall of the rotating handle is provided with an ejecting groove thread, the inner wall of the rotating handle close to the fixed pipe is provided with a returning convex tooth, and the body of the fixed pipe is provided with a returning sliding groove hole along the axial direction;
the ejection device comprises an inner tube, a fixed column, an ejection tube and a conical head, the ejection tube is fixed below the fixed column, ejection convex teeth are arranged on the outer side of the fixed column, the inner tube is arranged in the fixed column and the ejection tube, the conical head is fixed at the bottom of the inner tube, and a blood vessel support is sleeved on the inner tube between the conical head and the ejection tube;
the retraction device consists of a threaded pipe, a transfusion pipe, a three-way joint and an outer sheath pipe;
a backspacing groove thread is arranged outside the screwed pipe, an ejection sliding groove hole along the axis direction is arranged on the pipe body of the screwed pipe, the bottom of the screwed pipe is connected with a three-way joint, the bottom of the three-way joint is connected with an outer sheath pipe, and a transfusion pipe is connected with the side port of the three-way joint;
the screwed pipe is placed in the fixed pipe and the rotating handle, the infusion pipe extends out of the backspacing sliding groove hole, the outer sheath pipe extends out of the bottom of the fixed pipe, and backspacing convex teeth on the inner wall of the rotating handle are in threaded fit with backspacing grooves on the outer part of the screwed pipe;
the fixed column is placed in the threaded pipe, the ejection pipe is inserted into the three-way joint and the outer sheath pipe, a rubber ring sealed with the outer wall of the ejection pipe is arranged in the upper port of the three-way joint, the lower port of the outer sheath pipe is sealed by the conical head, the blood vessel support is positioned between the inner pipe and the outer sheath pipe, and ejection convex teeth on the outer side of the fixed column extend out of an ejection sliding groove hole of the threaded pipe and are in threaded fit with ejection grooves on the inner wall of the rotating handle;
when the rotating handle rotates relative to the fixed pipe, the backspacing convex teeth drive the backspacing device to retract upwards, and the ejecting convex teeth drive the ejecting device to extend.
2. The coaxially driven type blood vessel stent conveying system according to claim 1, wherein a developing point is provided at a lower end portion of the outer sheath.
3. The coaxially driven intravascular stent delivery system according to claim 1, wherein the inner tube is provided with an inner tube connecting member at an upper end thereof.
4. The coaxially driven type blood vessel stent conveying system as claimed in claim 1, wherein the inner side of the lower end of the rotary handle is provided with a circle of ribs, the outer part of the upper end of the fixed tube is provided with grooves matched with the ribs, and the rotary handle is freely rotated in the grooves of the fixed tube through the ribs.
5. The coaxially driven intravascular stent delivery system of claim 1, wherein the threaded tube is a single, integral threaded tube or a segmented connection threaded tube.
6. The coaxially driven type blood vessel stent conveying system according to claim 1, wherein the lower end of the ejection tube is fixed with a recovery device, the recovery device is a tube body, the upper end of the tube body is fixed at the lower end of the ejection tube, the outside of the tube orifice at the other end is provided with a plurality of raised fixing teeth, the blood vessel stent is sleeved outside the recovery device, and the fixing teeth are clamped in the mesh of the blood vessel stent.
7. The coaxially driven type blood vessel stent conveying system as claimed in claim 6, wherein the recycling device is made of a tube made of plastic or metal.
8. The coaxially driven intravascular stent delivery system of claim 1, wherein the ejection groove thread is an equidistant thread or a variable pitch thread with gradually decreasing pitch from bottom to top.
9. The coaxially driven intravascular stent delivery system of claim 1, wherein the backset threads are equidistant threads or variable pitch threads with gradually decreasing pitch from top to bottom.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910526157.0A CN112089514B (en) | 2019-06-18 | 2019-06-18 | Coaxial driving type vascular stent conveying system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910526157.0A CN112089514B (en) | 2019-06-18 | 2019-06-18 | Coaxial driving type vascular stent conveying system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN112089514A true CN112089514A (en) | 2020-12-18 |
| CN112089514B CN112089514B (en) | 2024-07-23 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910526157.0A Active CN112089514B (en) | 2019-06-18 | 2019-06-18 | Coaxial driving type vascular stent conveying system |
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| CN (1) | CN112089514B (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102038565A (en) * | 2010-12-17 | 2011-05-04 | 北京有色金属研究总院 | Novel great vascular stent delivery system |
| CN102488576A (en) * | 2011-11-25 | 2012-06-13 | 北京华脉泰科医疗器械有限公司 | Convey and release device for covered stents |
| CN104622607A (en) * | 2013-11-07 | 2015-05-20 | 微创心脉医疗科技（上海）有限公司 | Conveying system of aorta abdominalis support |
| US20170172773A1 (en) * | 2014-05-21 | 2017-06-22 | Suzhou Innomed Medical Device Co., Ltd. | Highly retractable intravascular stent conveying system |
| CN210541958U (en) * | 2019-06-18 | 2020-05-19 | 上海善迪医疗科技有限公司 | Coaxial drive type intravascular stent conveying system |
-
2019
- 2019-06-18 CN CN201910526157.0A patent/CN112089514B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102038565A (en) * | 2010-12-17 | 2011-05-04 | 北京有色金属研究总院 | Novel great vascular stent delivery system |
| CN102488576A (en) * | 2011-11-25 | 2012-06-13 | 北京华脉泰科医疗器械有限公司 | Convey and release device for covered stents |
| CN104622607A (en) * | 2013-11-07 | 2015-05-20 | 微创心脉医疗科技（上海）有限公司 | Conveying system of aorta abdominalis support |
| US20170172773A1 (en) * | 2014-05-21 | 2017-06-22 | Suzhou Innomed Medical Device Co., Ltd. | Highly retractable intravascular stent conveying system |
| CN210541958U (en) * | 2019-06-18 | 2020-05-19 | 上海善迪医疗科技有限公司 | Coaxial drive type intravascular stent conveying system |
Also Published As
| Publication number | Publication date |
|---|---|
| CN112089514B (en) | 2024-07-23 |
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