CN109620255B - Needle fixing device and automatic blood sampling machine - Google Patents
Needle fixing device and automatic blood sampling machine Download PDFInfo
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- CN109620255B CN109620255B CN201910090068.6A CN201910090068A CN109620255B CN 109620255 B CN109620255 B CN 109620255B CN 201910090068 A CN201910090068 A CN 201910090068A CN 109620255 B CN109620255 B CN 109620255B
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- 238000010241 blood sampling Methods 0.000 title abstract description 9
- 238000012360 testing method Methods 0.000 claims description 9
- 239000013013 elastic material Substances 0.000 claims description 4
- 230000001960 triggered effect Effects 0.000 claims description 3
- 239000008280 blood Substances 0.000 claims description 2
- 210000004369 blood Anatomy 0.000 claims description 2
- 238000013461 design Methods 0.000 description 9
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000003780 insertion Methods 0.000 description 2
- 230000037431 insertion Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000013011 mating Effects 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
Classifications
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B5/00—Measuring for diagnostic purposes; Identification of persons
- A61B5/15—Devices for taking samples of blood
- A61B5/153—Devices specially adapted for taking samples of venous or arterial blood, e.g. with syringes
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B5/00—Measuring for diagnostic purposes; Identification of persons
- A61B5/15—Devices for taking samples of blood
- A61B5/150007—Details
- A61B5/150015—Source of blood
- A61B5/15003—Source of blood for venous or arterial blood
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B5/00—Measuring for diagnostic purposes; Identification of persons
- A61B5/15—Devices for taking samples of blood
- A61B5/150007—Details
- A61B5/150732—Needle holders, for instance for holding the needle by the hub, used for example with double-ended needle and pre-evacuated tube
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- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Heart & Thoracic Surgery (AREA)
- Medical Informatics (AREA)
- Biophysics (AREA)
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- Engineering & Computer Science (AREA)
- Biomedical Technology (AREA)
- Hematology (AREA)
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- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Infusion, Injection, And Reservoir Apparatuses (AREA)
Abstract
The invention is suitable for the field of medical appliances, and provides a needle fixing device and an automatic blood sampling machine. The needle fixing device is used for fixing a needle, the needle comprises a needle rod, a needle seat and a needle handle, the needle fixing device comprises a placing table used for preliminarily fixing the needle handle and a clamping assembly used for clamping the needle seat after the needle handle is preliminarily fixed on the placing table, the clamping assembly comprises a left clamping plate, a right clamping plate and a driver, the left clamping plate and the right clamping plate are symmetrically arranged, move in opposite directions and move in the middle to clamp the needle seat, a left arc-shaped groove recessed leftwards is formed in the right surface of the left clamping plate, a right arc-shaped groove recessed rightwards is formed in the left surface of the right clamping plate, and the sections of the left arc-shaped groove and the right arc-shaped groove are single curvatures, have the same curvatures and arc centers are located in arcs of the same horizontal height. The needle fixing device provided by the invention can effectively improve the accuracy of the central axis position of the needle when the needle clamp is fastened.
Description
Technical Field
The invention belongs to the field of medical equipment, and particularly relates to a needle fixing device and an automatic blood sampling machine.
Background
The action object of the needle head fixing device is a medical needle head for blood sampling, the needle head comprises a needle rod, a needle seat and a needle handle which are sequentially connected, the needle handle is connected with the connecting pipe, and the needle rod is inserted into the test tube so that the connecting pipe is communicated with the test tube. In some cases, the needle bar is required to be fixed at a specific position, so that the test tube and the needle bar can be successfully inserted, and in this case, high accuracy is required for fixing the needle bar. The existing needle fixing device adopts a simple fixing seat, a clamping groove for accommodating a needle handle is formed in the fixing seat, and the needle handle is placed into the clamping groove to realize fixation. In this way, there are many factors that affect the final fixed position of the shank, such as errors in the manufacture of the clamping groove itself, variations in the depth of the operator's insertion into the clamping groove, variations in the manufacture of the shank itself, etc. Therefore, it is difficult for the existing design to ensure the accuracy of the needle bar position. And the existing holders have difficulty providing sufficient clamping force to ensure that the needle does not move relative to the holder when the needle bar is inserted into the test tube.
Disclosure of Invention
The present invention aims to overcome the above-mentioned drawbacks of the prior art and to provide a needle fixing device and an automatic blood collection machine which aim to improve the accuracy of the needle bar position.
The invention provides a needle fixing device, which is used for fixing a needle, the needle comprises a needle rod, a needle seat and a needle handle which are sequentially connected, the needle seat is in a cylinder shape extending forwards and backwards and is used for fixing the needle rod, the needle handle is used for an operator to capture, and the needle fixing device comprises:
a placement table for fixing the needle handle;
the clamping assembly is used for clamping the needle seat after the needle handle is fixed on the placing table, and comprises a left clamping plate, a right clamping plate and a driver, wherein the left clamping plate and the right clamping plate are symmetrically arranged, the driver is used for driving the left clamping plate and the right clamping plate to move in opposite directions and move in the middle to clamp the needle seat, a left arc-shaped groove which is sunken left is formed in the right surface of the left clamping plate, a right arc-shaped groove which is sunken right is formed in the left surface of the right clamping plate, and the sections of the left arc-shaped groove and the right arc-shaped groove are single curvatures, have the same curvatures and arc centers are located in the same horizontal height.
Further, the clamping assembly further comprises a left sliding rail, a right sliding block and a left sliding block, wherein the left sliding rail and the right sliding block extend leftwards and rightwards, the left sliding block and the right sliding block are respectively in sliding connection with the sliding rail, the left clamping plate is fixedly connected with the left sliding block, and the right clamping plate is fixedly connected with the right clamping plate;
The clamping assembly further comprises a left screw and a right screw, the left slider is sleeved on the left screw, the right slider is sleeved on the right screw, and the driver drives the left screw and the right screw to rotate, so that the left slider and the right slider move towards the middle at the same time.
Further, the left screw outer surface is provided with left threads, the right screw outer surface is provided with right threads opposite to the left threads in the rotation direction, and the left screw and the right screw are integrally arranged.
Further, the placing table comprises a bottom plate, a supporting plate and a limiting seat, wherein the supporting plate and the limiting seat are fixed on the bottom plate and are arranged front and back, the needle handle is clamped between the supporting plate and the limiting seat, the supporting plate limits the needle handle to move forwards, and the limiting seat limits the needle handle to move backwards.
Further, the limiting seat is provided with a limiting groove which extends forwards downwards on the upper surface of the limiting seat, the supporting plate is provided with a containing groove which penetrates through the upper surface of the supporting plate from front to back downwards, the needle seat is abutted to the bottom of the containing groove, and the needle handle is clamped between the rear groove wall of the limiting groove and the rear surface of the supporting plate.
Further, the bottom of the accommodating groove is an arc surface, and the curvature radius of the accommodating groove is larger than that of the left arc groove.
Further, the needle fixing device further comprises a trigger control, the trigger control is fixed on the placing table, when the needle is placed on the placing table, the trigger control is triggered, and the driver drives the left clamping plate and the right clamping plate to clamp the needle.
Further, the trigger control is fixed at the bottom of the limiting groove.
Further, the left clamping plate comprises a left plate main body and a left clamping piece which is connected to the right surface of the left plate main body and extends rightward, and the left arc-shaped groove is formed in the left clamping piece; the right clamping plate comprises a right plate main body and a right clamping piece connected to the left surface of the right plate main body and extending leftwards, the right arc-shaped groove is formed in the right clamping piece, and the left clamping piece and the right clamping piece are made of elastic materials.
The invention also provides an automatic blood sampling machine, which comprises the needle fixing device.
According to the needle fixing device provided by the invention, through the design of the left arc-shaped groove and the right arc-shaped groove and the combination of the left clamping plate and the right clamping plate, the needle seat is fixed between the left arc-shaped groove and the right arc-shaped groove, and the central axis of the needle rod is intersected with the connecting line of the arc center of the left arc-shaped groove and the arc center of the right arc-shaped groove at the midpoint of the connecting line of the arc center of the left arc-shaped groove and the arc center of the right arc-shaped groove, so that the size deviation, the personnel placement deviation and the like of the needle seat are ensured not to influence the position of the central axis of the needle rod, and the accuracy of the needle fixing position is improved.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are needed in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic view of a prior art needle;
FIG. 2 is a schematic view showing the connection of a needle fixing device to a needle according to a first embodiment of the present invention;
FIG. 3 is a front view of FIG. 2;
fig. 4 is a perspective view of a needle mount according to a first embodiment of the present invention;
FIG. 5 is a partially disassembled view of a needle mount according to a first embodiment of the present invention;
FIG. 6 is a schematic diagram of the connection of a placement stage and a trigger control according to a first embodiment of the present invention;
fig. 7 is a schematic view showing connection of the left and right splints to the needle according to the first embodiment of the present invention.
Reference numerals illustrate:
Detailed Description
The present invention will be described in further detail with reference to the drawings and examples, in order to make the objects, technical solutions and advantages of the present invention more apparent. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the invention.
It will be understood that when an element is referred to as being "mounted" or "disposed" on another element, it can be directly on the other element or be indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or be indirectly connected to the other element.
Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more such feature. In the description of the present invention, the meaning of "a plurality" is two or more, unless explicitly defined otherwise.
It should be further noted that, in the embodiment of the present invention, the XYZ rectangular coordinate system established in fig. 1 is defined as follows: one side in the positive direction of the X axis is defined as the front, and one side in the negative direction of the X axis is defined as the rear; one side in the positive direction of the Y axis is defined as the left side, and one side in the negative direction of the Y axis is defined as the right side; one side in the positive direction of the Z axis is defined as upper and one side in the negative direction of the Z axis is defined as lower.
It should be further noted that terms such as left, right, upper, and lower in the embodiments of the present invention are merely relative concepts or references to normal use states of the product, and should not be construed as limiting.
Example 1
The embodiment provides a needle fixing device for fixing a needle.
Referring to fig. 1, the needle 100 includes a needle shaft 110, a needle holder 120 and a needle handle 130 connected in sequence, the needle holder 120 is used for fixing the needle shaft 110, the needle holder 120 is in a cylindrical shape extending back and forth, the needle handle 130 is used as a capturing action point for facilitating the operation of an operator, the needle shaft 110, the needle holder 120 and the needle handle 130 have the same central axis extending along the back and forth direction, the needle handle 130 is connected with a connecting tube 140, and the needle shaft 110 is inserted into a test tube (not shown) to connect the connecting tube 140 with the test tube.
Referring to fig. 2-7, the needle mount includes a placement table 200 and a clamping assembly 300.
Placement stage 200 is used to secure needle handle 130 and clamping assembly 300 is used to clamp hub 120 after needle handle 130 is secured to placement stage 200. The clamping assembly 300 comprises a left clamping plate 310, a right clamping plate 320 and a driver 330 for driving the left clamping plate 310 and the right clamping plate 320 to move in opposite directions and move towards the middle to clamp the needle seat 120, wherein a left arc-shaped groove 311 recessed leftwards is formed in the right surface of the left clamping plate 310, a right arc-shaped groove 321 recessed rightwards is formed in the left surface of the right clamping plate 320, and the sections of the left arc-shaped groove 311 and the right arc-shaped groove 321 are single curvatures, have the same curvatures and are arc-shaped with the arc centers at the same horizontal height.
Referring to fig. 3, by the arrangement of the left clamping plate 310 and the right clamping plate 320 moving toward the middle at the same time, in combination with the design of the left arc-shaped slot 311 and the right arc-shaped slot 321, the needle holder 120 is fixed between the left arc-shaped slot 311 and the right arc-shaped slot 321, and the central axis of the needle 100 intersects with the connecting line of the arc centers of the left arc-shaped slot 311 and the right arc-shaped slot 321 at the midpoint (point G) of the connecting line of the arc centers of the left arc-shaped slot 311 and the right arc-shaped slot 321, thereby ensuring that the dimensional deviation of the needle holder 120 or other external factors do not affect the intersection position of the central axis of the needle 100 and the connecting line of the arc centers of the left arc-shaped slot 311 and the right arc-shaped slot 321, and improving the accuracy of the fixing position of the needle 100. At the same time, the left clamp plate 310 and the right clamp plate 320 clamp the needle holder 120 in an electromechanical manner, providing sufficient clamping force to ensure that the needle 100 does not displace when the needle shaft 110 is inserted into a test tube.
It will be appreciated by those skilled in the art that, in order to achieve the clamping function, when the radius of curvature of the left arc-shaped groove 311 and the right arc-shaped groove 321 is greater than the radius of the needle holder 120, the centers of the left arc-shaped groove 311 and the right arc-shaped groove 321 are both outside the arc-shaped area, and the arcs are shorter than the semicircular length of the same curvature. When the radius of curvature of the left and right arc grooves 311 and 321 is smaller than the radius of the needle holder 120, this limitation is not imposed. In the illustrated embodiment, the radius of curvature of the left arc-shaped groove 311 and the right arc-shaped groove 321 is larger than the radius of the needle seat 120, the arc centers of the left arc-shaped groove 311 and the right arc-shaped groove 321 are outside the arc-shaped area, and the arc is shorter than the semicircular length of the same curvature.
Preferably, referring to fig. 7, the left clamping plate 310 includes a left plate main body 313 and a left clamping member 312 connected to the right surface of the left plate main body 313 and extending rightward, and a left arc-shaped groove 311 is formed in the left clamping member 312; the right clamping plate 320 includes a right plate main body 323 and a right clamping member 322 connected to the left surface of the right plate main body 323 and extending leftward, a right arc-shaped groove 321 is formed in the right clamping member 322, and the left clamping member 312 and the right clamping member 322 are made of elastic materials. In this design, the needle holder 120 is mainly cylindrical in the existing needle 100, and because of different brands and manufacturers, part of the needle holder 120 is also provided with annular protrusions on the outer peripheral surface, and the arrangement of the left clamping member 312 and the right clamping member 322 made of elastic materials can avoid the influence of different needle holder 120 designs on the central axis position of the needle 100 when it is fixed.
In this embodiment, the left plate main body 313 and the right plate main body 323 are made of a metal material, preferably an aluminum material. The left clamp member 312 and the right clamp member 322 are preferably made of a rubber material.
Referring to fig. 4 and 6, the placement platform 200 includes a base plate 210, a supporting plate 220 fixed on the base plate 210 and disposed front and back, and a limiting seat 230, the needle handle 130 is clamped between the supporting plate 220 and the limiting seat 230, the supporting plate 220 limits the forward movement of the needle handle 130, and the limiting seat 230 limits the backward movement of the needle handle 130. The separation setting of layer board 220 and spacing seat 230 is convenient for the operating personnel operation, and operating personnel's hand catches needle handle 130, puts into the space of dodging between spacing seat 230 and layer board 220 and can realize the preliminary fixed of syringe needle 100.
Further, the limiting seat 230 is provided with a limiting groove 231 extending forward downwards on its upper surface, the supporting plate 220 is provided with a holding groove 221 penetrating forward and backward downwards on its upper surface, the needle stand 120 abuts against the bottom of the holding groove 221, and the needle handle 130 is clamped between the rear groove wall of the limiting groove 231 and the rear surface of the supporting plate 220. The positioning grooves 231 and the accommodating grooves 221 provide operation guidance for operators on one hand, and on the other hand, can primarily fix the needle 100 and limit the needle 100 to be placed along the front-rear direction.
Further, the upper surface of the groove wall of the limit groove 231 is inclined to the middle. This design serves as a guide for the insertion of hub 120.
Referring to fig. 3 again, the bottom of the accommodating groove 221 is an arc surface, and the radius of curvature thereof is not smaller than that of the left arc groove 311. This design may suitably increase the size range of the clampable needle 100. Specifically, the needle holder 120 is limited by the radii of curvature of the accommodating groove 221, the left arc-shaped groove 311 and the right arc-shaped groove 321, and if the radius of curvature of the accommodating groove 221 is not smaller than the radius of the left arc-shaped groove 311 or the right arc-shaped groove 321, the size of the clampable needle 100 in the present embodiment is limited only by the left arc-shaped groove 311 and the right arc-shaped groove 321. Thereby increasing the applicable range.
Referring to fig. 4 and 6, the needle fixing device further includes a trigger control 400, wherein the trigger control 400 is fixed on the placement platform 200, and when the needle 100 is placed on the placement platform 200, the trigger control 400 is triggered, and the driver 330 drives the left clamping plate 310 and the right clamping plate 320 to clamp the needle 100. The trigger control 400 improves the automation degree of the needle 100 clamping device, improves the working efficiency and saves the labor cost.
Further, the trigger control 400 is fixed at the bottom of the limit slot 231, which on one hand makes the structure more compact, and the design ensures that the needle handle 130 is placed at the bottom of the limit slot 231, so as to avoid movement during clamping due to insufficient placement.
Referring to fig. 2 and 5, the clamping assembly 300 further includes a sliding rail 341 extending from left to right, a left slider 344 and a right slider 345 slidably connected with the sliding rail 341, a left clamping plate 310 fixedly connected with the left slider 344, and a right clamping plate 320 fixedly connected with the right clamping plate 320;
The clamping assembly 300 further includes a left screw 342 and a right screw 343, a left slider 344 is sleeved on the left screw 342, a right slider 345 is sleeved on the right screw 343, and the driver 330 drives the left screw 342 and the right screw 343 to rotate, thereby simultaneously moving the left slider 344 and the right slider 345 toward the middle.
The mating arrangement of the left slider 344 and the left slide 341, the right slider 345 and the right slide 341 ensures that the left clamp plate 310 and the right clamp plate 320 move in the left-right direction. The left screw 342 and the left slider 344 are matched, the right screw 343 and the right slider 345 are matched to form two screw rod structures, the rotation of the driver 330 is converted into left and right movement, the structure is simple, and the reliability is high.
In this embodiment, the left slider 344 and the left clamp plate 310 are separate pieces, and in other embodiments, the left slider 344 is integrally designed with the left clamp plate 310.
Referring to fig. 5 again, in the present embodiment, the left slider 344 is split into a left connection block 3442 and a left connection block 3442 which are detachably connected, the left movement block 3441 is slidingly connected with the left slide rail 341, and the left connection block 3442 is connected with the left clamping plate 310. The right slider 345 is divided into a right moving block 3451 and a right connecting block 3452 which are detachably connected, the right moving block 3451 is slidingly connected with the right slide rail 341, and the right connecting block 3452 is connected with the right clamping plate 320. The detachable connection design is beneficial to reducing the cost of part processing. In other embodiments, the left slider 344 is integrally provided and the right slider 345 is integrally provided.
Preferably, the left screw 342 is provided with a left thread (not shown) on the outer surface thereof, the right screw 343 is provided with a right thread (not shown) opposite to the rotation direction of the left thread on the outer surface thereof, and the left screw 342 and the right screw 343 are integrally provided. Through the integrated arrangement of the left screw 342 and the right screw 343, and in combination with the arrangement of the opposite threads, when the driver 330 drives the left screw 342 or the right screw 343 to rotate, the left slider 344 and the right slider 345 simultaneously move toward or away from each other, so that the left clamping plate 310 and the right clamping plate 320 move in opposite directions toward or away from each other. The structure is simple, and the synchronicity of the movement of the left and right clamping plates 310 and 320 is ensured.
Example two
The invention also provides an automatic blood sampling machine, which comprises a needle fixing device, wherein the specific structure of the needle fixing device refers to the first embodiment. Because the automatic blood sampling machine adopts all the technical schemes of the first embodiment, the automatic blood sampling machine has all the beneficial effects brought by the technical schemes of the first embodiment, and the description is omitted.
The foregoing description of the preferred embodiments of the invention is not intended to be limiting, but rather is intended to cover all modifications, equivalents, or alternatives falling within the spirit and principles of the invention.
Claims (7)
1. A needle fixing device for fixing a needle, the needle including a needle bar, a needle seat and a needle handle connected in sequence, the needle seat is in a cylinder shape extending back and forth and used for fixing the needle bar, and the needle handle is used for an operator to catch, the needle fixing device is characterized in that the needle bar is inserted into a test tube to enable a connecting tube to be connected with the test tube, and the needle fixing device comprises:
a placement table for fixing the needle handle;
The clamping assembly is used for clamping the needle seat after the needle handle is fixed on the placing table and comprises a left clamping plate, a right clamping plate and a driver, wherein the left clamping plate and the right clamping plate are symmetrically arranged, the driver is used for driving the left clamping plate and the right clamping plate to move in opposite directions and move in the middle to clamp the needle seat, a left arc-shaped groove which is sunken left is formed in the right surface of the left clamping plate, a right arc-shaped groove which is sunken right is formed in the left surface of the right clamping plate, and the cross sections of the left arc-shaped groove and the right arc-shaped groove are single curvatures, the curvatures are the same, and arc centers of the left arc-shaped groove and the right arc-shaped groove are located at the same horizontal height;
The placing table comprises a bottom plate, a supporting plate and a limiting seat, wherein the supporting plate and the limiting seat are fixed on the bottom plate and are arranged front and back, the needle handle is clamped in an avoidance space between the supporting plate and the limiting seat, the supporting plate limits the needle handle to move forwards, and the limiting seat limits the needle handle to move backwards;
The upper surface of the limit seat is downwards provided with a limit groove for extending forwards, the upper surface of the support plate is downwards provided with a containing groove which is penetrated from front to back, the needle seat is abutted to the bottom of the containing groove, and the needle handle is clamped between the rear groove wall of the limit groove and the rear surface of the support plate;
The bottom of the accommodating groove is an arc surface, and the curvature radius of the accommodating groove is not smaller than that of the left arc groove;
The needle seat is fixed between the left arc-shaped groove and the right arc-shaped groove, and the central axis of the needle rod intersects with the arc center of the left arc-shaped groove and the arc center connecting line of the right arc-shaped groove at the middle point of the arc center of the left arc-shaped groove and the arc center connecting line of the right arc-shaped groove.
2. The needle fixing device according to claim 1, wherein the clamping assembly further comprises a left slide rail and a right slide rail which extend leftwards and rightwards, a left slide block and a right slide block which are respectively in sliding connection with the slide rail, the left clamping plate is fixedly connected with the left slide block, and the right clamping plate is fixedly connected with the right clamping plate;
The clamping assembly further comprises a left screw and a right screw, the left slider is sleeved on the left screw, the right slider is sleeved on the right screw, and the driver drives the left screw and the right screw to rotate, so that the left slider and the right slider move towards the middle at the same time.
3. The needle fixing device according to claim 2, wherein the left screw outer surface is provided with a left thread, the right screw outer surface is provided with a right thread opposite to the rotation direction of the left thread, and the left screw and the right screw are integrally provided.
4. The needle mount of claim 1, further comprising a trigger control secured to the placement table, the trigger control being triggered when the needle is placed on the placement table, the driver driving the left and right jaws to grip the needle.
5. The needle mount of claim 4, wherein the trigger control is fixed to a bottom of the limit slot.
6. The needle fixing device according to any one of claims 1 to 5, wherein the left clamping plate comprises a left plate main body and a left clamping member connected to the right surface of the left plate main body and extending rightward, and the left arc-shaped groove is formed in the left clamping member; the right clamping plate comprises a right plate main body and a right clamping piece connected to the left surface of the right plate main body and extending leftwards, the right arc-shaped groove is formed in the right clamping piece, and the left clamping piece and the right clamping piece are made of elastic materials.
7. An automatic blood collection machine comprising a needle fixing device according to any one of claims 1 to 6.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910090068.6A CN109620255B (en) | 2019-01-30 | 2019-01-30 | Needle fixing device and automatic blood sampling machine |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910090068.6A CN109620255B (en) | 2019-01-30 | 2019-01-30 | Needle fixing device and automatic blood sampling machine |
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| CN109620255A CN109620255A (en) | 2019-04-16 |
| CN109620255B true CN109620255B (en) | 2024-07-16 |
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| CN206804675U (en) * | 2017-06-14 | 2017-12-26 | 深圳市傲天医疗智能系统有限公司 | A kind of clamping device of syringe needle |
| CN108635650A (en) * | 2018-04-26 | 2018-10-12 | 许仕明 | A kind of operating room anesthesia syringe fixing device |
| CN108731978A (en) * | 2018-06-26 | 2018-11-02 | 深圳市傲天医疗智能系统有限公司 | A kind of horizontal blood sampling apparatus and its control method |
| CN209629672U (en) * | 2019-01-30 | 2019-11-15 | 深圳市傲天医疗智能系统有限公司 | Needle fixture and automatic blood sampling machine |
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| CN109620255A (en) | 2019-04-16 |
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