CN210330587U - Artery blood taking needle capable of controlling puncture depth - Google Patents
Artery blood taking needle capable of controlling puncture depth Download PDFInfo
- Publication number
- CN210330587U CN210330587U CN201920921926.2U CN201920921926U CN210330587U CN 210330587 U CN210330587 U CN 210330587U CN 201920921926 U CN201920921926 U CN 201920921926U CN 210330587 U CN210330587 U CN 210330587U
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- blood
- sleeve
- protective cap
- hinged
- blood sampling
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- 239000008280 blood Substances 0.000 title claims abstract description 92
- 210000004369 blood Anatomy 0.000 title claims abstract description 92
- 210000001367 artery Anatomy 0.000 title claims abstract description 21
- 238000010241 blood sampling Methods 0.000 claims abstract description 72
- 230000001681 protective effect Effects 0.000 claims abstract description 57
- 210000000078 claw Anatomy 0.000 claims description 13
- 235000017166 Bambusa arundinacea Nutrition 0.000 claims description 4
- 235000017491 Bambusa tulda Nutrition 0.000 claims description 4
- 241001330002 Bambuseae Species 0.000 claims description 4
- 235000015334 Phyllostachys viridis Nutrition 0.000 claims description 4
- 239000011425 bamboo Substances 0.000 claims description 4
- 230000035515 penetration Effects 0.000 claims description 3
- 229920003023 plastic Polymers 0.000 claims description 3
- 239000004033 plastic Substances 0.000 claims description 3
- 230000001154 acute effect Effects 0.000 claims description 2
- 238000005452 bending Methods 0.000 claims description 2
- 230000006378 damage Effects 0.000 description 4
- 238000003780 insertion Methods 0.000 description 4
- 230000037431 insertion Effects 0.000 description 4
- 230000001276 controlling effect Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 238000013507 mapping Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 208000027418 Wounds and injury Diseases 0.000 description 2
- 208000014674 injury Diseases 0.000 description 2
- 230000001105 regulatory effect Effects 0.000 description 2
- 238000007792 addition Methods 0.000 description 1
- 230000017531 blood circulation Effects 0.000 description 1
- 230000003139 buffering effect Effects 0.000 description 1
- 230000008602 contraction Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
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- Measurement Of The Respiration, Hearing Ability, Form, And Blood Characteristics Of Living Organisms (AREA)
Abstract
An artery blood taking needle with controllable puncture depth comprises a blood taking barrel, wherein a blood taking piston is slidably connected in the blood taking barrel, a blood taking rod is fixedly connected at the rear end of the blood taking piston, the front end of the blood taking barrel is connected with a needle head through threads, a sleeve cap is sleeved at the front end of the needle head, a first protective cap capable of being turned back and forth is hinged at the rear end of the needle head, and a second protective cap capable of being turned left and right is hinged at the front end of the first protective cap; a detachable condom is sleeved on the outer side of the blood collecting barrel, a swinging sleeve capable of being turned back and forth is hinged to the side end of the condom, an adjusting rod capable of moving back and forth is connected onto the swinging sleeve in a sliding manner, and a positioning plate capable of swinging back and forth is hinged to the front end of the adjusting rod; the thickness of the blood sampling cylinder is singly sleeved with a detachable blood sampling sleeve, and the blood sampling sleeve is provided with a blood sampling pressing block for controlling the movement of the blood sampling rod. The utility model effectively solves the problems that the prior artery blood taking needle is easy to stab medical care personnel after use, can not be destroyed in time after use, and blood backflow easily occurs during blood taking.
Description
Technical Field
The utility model belongs to the technical field of medical instrument and specifically relates to an artery blood taking needle of controllable depth of penetration.
Background
Arterial blood sampling is a method of extracting a certain amount of arterial blood through a needle tube, and is often used clinically. However, the currently clinically used artery blood sampling device has great disadvantages, great insecurity and inconvenience.
First, the needle for arterial blood sampling has a protective sleeve to protect the needle from damage when not in use, and meanwhile, the needle is prevented from pricking others. However, when the needle is covered with a protective cover for safety after arterial blood collection, the hands of the medical staff are accidentally injured due to misalignment.
Secondly, if the needle head after the arterial blood collection is not destroyed or bent in time, the situation that a lawless person steals the blood collection needle for secondary sale is easy to happen, and the existing arterial blood collection device is thrown into a garbage can or a sharps box for waiting for treatment after being used up, so that potential safety hazards exist in the process.
Thirdly, when the artery is used for blood sampling, the phenomenon that the blood drawing needle is pushed back due to improper operation or misoperation of medical personnel can occur, so that blood flows back, and unnecessary troubles or even injuries are caused to patients.
SUMMERY OF THE UTILITY MODEL
The utility model provides an artery blood taking needle of controllable depth of penetration to the not enough of prior art, has solved present artery blood taking needle easily after the use stab medical personnel, can not in time destroy, the problem of easy blood backward flow of taking a blood sample after the use effectively.
In order to solve the above problems, the utility model adopts the following technical proposal:
an artery blood taking needle with controllable puncture depth comprises a blood taking barrel, wherein a blood taking piston is slidably connected in the blood taking barrel, a blood taking rod is fixedly connected at the rear end of the blood taking piston, the front end of the blood taking barrel is connected with a needle head through threads, a sleeve cap is sleeved at the front end of the needle head, a first protective cap capable of being turned back and forth is hinged at the rear end of the needle head, and a second protective cap capable of being turned left and right is hinged at the front end of the first protective cap; a detachable condom is sleeved on the outer side of the blood collecting barrel, a swinging sleeve capable of being turned back and forth is hinged to the side end of the condom, an adjusting rod capable of moving back and forth is connected onto the swinging sleeve in a sliding manner, and a positioning plate capable of swinging back and forth is hinged to the front end of the adjusting rod; the thickness of the blood sampling cylinder is singly sleeved with a detachable blood sampling sleeve, and the blood sampling sleeve is provided with a blood sampling pressing block for controlling the movement of the blood sampling rod.
Preferably, the side ends of the first protective cap and the second protective cap are both inwards provided with a concave groove, the first protective cap and the second protective cap are hinged through a rotating shaft, and the rotating shaft is positioned on one side provided with the concave groove.
Preferably, through threaded holes are formed in the side ends of the condom, the blood sampling sleeve and the swing sleeve, and positioning screws are connected in the threaded holes in a threaded manner; the side ends of the blood collecting cylinder and the adjusting rod are provided with scale marks.
Preferably, the locating plate expansion end outside is inwards opened there is the U-shaped mouth, the locating plate downside articulates there is the swash plate, the swash plate bottom articulates there is the sliding sleeve, sliding sleeve sliding connection has the slide bar, slide bar fixed connection in adjust the pole side, the slide bar of downside all overlaps and is equipped with safety spring on the sliding sleeve.
Preferably, a pleat sleeve made of soft plastics is arranged above the hinged position of the first protective cap and the second protective cap, and the head end and the tail end of the pleat sleeve are fixedly connected with the first protective cap and the second protective cap respectively.
Preferably, the main body of the blood sampling pressing block is L-shaped, the front end of the middle of the blood sampling pressing block is hinged to the outer side of the blood sampling sleeve, the rear end of the blood sampling pressing block is hinged to a first connecting rod and a second connecting rod, the tail end of the first connecting rod is hinged to a first swing rod, the tail end of the second connecting rod is hinged to a second swing rod, the tail ends of the first swing rod and the second swing rod are rotatably connected to the side end of the blood sampling sleeve through positioning shafts, the positioning shafts are rotatably connected with ratchet wheels, the end faces of the ratchet wheels are fixedly connected with straight gears, the straight gears are meshed with racks, and the racks are fixedly;
the articulated shaft department of first connecting rod and first pendulum rod still articulates there is the pawl that pushes away, the articulated shaft department of second connecting rod and second pendulum rod still articulates there is the claw that draws, push away and all be provided with the torsional spring on the axis of rotation of claw and the claw that draws, push away the claw front end and be the acute angle prong, draw the claw front end and be provided with the claw form of backward bending, push away the claw with draw the claw front end all block in on the ratchet of ratchet.
The utility model discloses novel structure, think about ingenious, easy operation is convenient, compares with prior art and has following advantage:
1. the device does not need to cover the needle head with the cap after use, and only needs to turn the first protective cap and the second protective cap to the position for covering the needle head, thereby reducing the occurrence of the situation that medical staff stabs themselves due to cap error after blood sampling.
2. This device can carry out timely destruction to the syringe needle after the blood sampling and handle, prevents that lawless persons from stealing the syringe needle after selling and using: the first protective cap is held by medical staff, the second protective cap is folded to bend the needle head, too much time of the medical staff cannot be wasted, the risk of stolen selling is also solved, and the needle head after being bent is not easy to stab other people.
3. This device pulls out the blood sampling pole from blood sampling section of thick bamboo through ratchet pawl mechanism and rack and pinion mechanism for blood sampling piston and blood sampling pole can only one-way outside removal during the blood sampling, can not take place because medical personnel's maloperation and the blood return phenomenon that arouses. And through the continuous blood sampling briquetting of pressing down make the blood sampling process of this device reduce medical personnel's the operation degree of difficulty in succession, reduce the problem that the personnel of hospital are not enough to the technical requirement of blood sampling.
4. This device still is provided with the device that is used for helping medical personnel to fix a position syringe needle depth of insertion, turns over through turning over the swing cover to adjust the length of regulating plate can help medical personnel to advance the needle effectively according to the depth of insertion that the scale on the regulating plate adjusted the syringe needle, has reduced the degree of difficulty of drawing blood, has improved medical personnel's operation success rate, has reduced patient's misery.
5. The condom and the blood sampling sleeve of the device are detachable structures, can be additionally assembled or disassembled as required, can be recycled as required, can save cost after being used conveniently, and can improve efficiency.
Drawings
Fig. 1 is a first axis mapping diagram of an artery blood taking needle with controllable puncture depth of the utility model.
Fig. 2 is a second shaft mapping diagram of the artery blood taking needle with controllable puncture depth of the utility model.
Fig. 3 is an axonometric view of the artery blood taking needle with controllable puncture depth, which is provided with the condom and the blood taking sleeve detached.
Fig. 4 is a first axis mapping diagram of the working state of the artery blood taking needle with controllable puncture depth.
Fig. 5 is a second axial drawing of the working state of the artery blood taking needle with controllable puncture depth of the utility model.
Fig. 6 is an axonometric view of the condom for the arterial blood taking needle with controllable puncture depth of the utility model.
Fig. 7 is an axonometric view of the first and second protective caps of an arterial blood collection needle of the present invention with a controlled puncture depth.
Fig. 8 is a first axis drawing of the blood collecting sleeve of the artery blood collecting needle with controllable puncture depth of the utility model.
Fig. 9 is a second axial view of the blood collecting sleeve of the artery blood collecting needle with controllable puncture depth.
Detailed Description
The following are specific embodiments of the present invention, and the technical solutions of the present invention will be further described with reference to the accompanying drawings, but the present invention is not limited to these embodiments.
As shown in fig. 1-9, the utility model provides an artery blood taking needle with controllable puncture depth, which comprises a blood taking tube 1, a blood taking piston is slidably connected in the blood taking tube 1, the rear end of the blood taking piston is fixedly connected with a blood taking rod 22, the front end of the blood taking tube 1 is connected with a needle head 2 through a thread, a sleeve cap 3 is sleeved at the front end of the needle head 2, a first protective cap 4 capable of being turned back and forth is hinged at the rear end of the needle head 2, and a second protective cap 5 capable of being turned left and right is hinged at the front end of the first protective cap; a detachable condom 6 is sleeved outside the blood collection barrel 1, a swinging sleeve 7 capable of being turned back and forth is hinged to the side end of the condom 6, an adjusting rod 8 capable of moving back and forth is connected to the swinging sleeve 7 in a sliding manner, and a positioning plate 9 capable of swinging back and forth is hinged to the front end of the adjusting rod 8; the thickness of the blood collecting tube 1 is provided with a detachable blood collecting sleeve 14, and the blood collecting sleeve 14 is provided with a blood collecting pressing block 16 for controlling the movement of the blood collecting rod 22.
The blood collection tube 1 is used for storing the drawn blood, the blood collection rod 22 is used for pulling the blood collection piston out of the blood collection tube 1, and the needle 2 is used for puncturing. The cap 3 is used for protecting the needle head 2 before blood sampling. The first protective cap 4 and the second protective cap 5 are combined to form a protective cap which is used for turning over to protect the needle head 2 after blood sampling. The main bodies of the condom 6 and the blood sampling sleeve 14 are both circular rings and are positioned by positioning screws. The swing sleeve 7 is used for turning over the adjusting rod 8, the position of the adjusting rod 8 can be adjusted as required, and the length direction of the adjusting rod 8 is the same as the axial direction of the needle head 2 when the adjusting rod is used. The positioning plate 9 limits the insertion depth of the needle head 2 through the position thereof, and can help medical staff to insert the needle. The blood collection set 14 is used to position the rear end device and is restrained in position by a set screw. Continuous drawing of the patient's blood can be achieved by pressing on the blood drawing press 16. The rear end of the blood sampling rod 22 is fixedly connected with a blood sampling sheet 15 through a screw, and the blood sampling sleeve 14 can be detached through the installation and the detachment of the blood sampling sheet 15.
The first protective cap 4 and the second protective cap 5 are provided with concave grooves at the side ends inwards, the first protective cap 4 and the second protective cap 5 are hinged through a rotating shaft, and the rotating shaft is positioned at one side provided with the concave grooves.
The length of the concave groove is larger than that of the needle head 2, the concave groove is used for storing the needle head 2, and the positions of the hinged shafts of the first protective cap 4 and the second protective cap 5 enable the first protective cap 4 and the second protective cap 4 to be turned over only in the direction of the concave groove, so that the needle head 2 can be bent.
The side ends of the condom 6, the blood sampling sleeve 14 and the swinging sleeve 7 are all provided with through threaded holes, and positioning screws are connected in the threaded holes in a threaded manner; the side ends of the blood collecting cylinder 1 and the adjusting rod 8 are provided with scale marks. The swing sleeve 7 is provided with a slotted hole, the adjusting rod 8 is positioned in the slotted hole, the threaded hole penetrates through the slotted hole, and the adjusting rod 8 can be screwed through the positioning screw.
When the set screw is screwed, the condom 6, the blood sampling sleeve 14 and the adjusting rod 8 are positioned. When the positioning screw is unscrewed, the condom 6 and the blood sampling sleeve 14 can be detached, and the length position of the adjusting rod 8 can be freely adjusted.
The utility model discloses a safety spring, including locating plate 9, slide bar 12, adjusting lever 8 side, slide bar 12 all overlaps and is equipped with safety spring 13, 9 expansion ends outside of locating plate inwards opens there is the U-shaped mouth, 9 belows of locating plate articulate has swash plate 10, the bottom of swash plate 10 articulates there is sliding sleeve 11, sliding sleeve 11 sliding connection has slide bar 12, slide bar 12 fixed connection in 8 sides of adjusting the pole, slide bar 12 of.
The main body of the positioning plate 9 is Y-shaped in nature, and can limit the insertion depth of the needle head 2 after being folded without influencing the use condition of the needle head 2. And a series of structures of articulated on locating plate 9 for provide the buffering, prevent that locating plate 9 from being too hard and causing the injury to the patient, be equivalent to absorbing effect. When the positioning plate 9 is pressed, the inclined plate 10 is pushed to swing, the inclined plate 10 pushes the sliding sleeve 11 to slide on the sliding rod 12, and when the positioning plate 9 is not pressed, the positioning plate 9 can be restored to the original state due to the existence of the safety spring 13.
A pleat sleeve 24 made of soft plastics is arranged above the hinged position of the first protective cap 4 and the second protective cap 5, and the head end and the tail end of the pleat sleeve 24 are respectively fixedly connected with the first protective cap 4 and the second protective cap 5. The pleat sleeve 24 is made of PVC.
The pleat sleeve 24 is provided with a plurality of folded pleats in the length direction to facilitate contraction and expansion of the pleat sleeve 24.
The main body of the blood sampling pressing block 16 is L-shaped, the bottom of the front end of the blood sampling pressing block 16 is fixedly connected with a return spring 17, and the bottom of the return spring 17 is fixedly connected to the outer side of the Chuasa and Asahi 14. The reset spring 17 is used for resetting the pressed blood sampling pressing block 16, the front end of the middle part of the blood sampling pressing block 16 is hinged to the outer side of the blood sampling sleeve 14, the rear end of the blood sampling pressing block 16 is hinged to a first connecting rod 18 and a second connecting rod 19, the tail end of the first connecting rod 18 is hinged to a first swing rod 25, the tail end of the second connecting rod 19 is hinged to a second swing rod 26, the tail ends of the first swing rod 25 and the second swing rod 26 are rotatably connected to the side end of the blood sampling sleeve 14 through a positioning shaft, the positioning shaft is rotatably connected with a ratchet 20, the end face of the ratchet 20 is fixedly connected with a straight gear 21, the straight gear 21 is meshed with a rack 23, and the rack 23 is fixedly;
the articulated shaft of the first connecting rod 18 and the first oscillating bar 25 is also articulated with a push pawl 27, the articulated shaft of the second connecting rod 19 and the second oscillating bar 26 is also articulated with a pull pawl 28, the rotating axes of the push pawl 27 and the pull pawl 28 are both provided with torsional springs, the front end of the push pawl 27 is an acute-angle pointed end, the front end of the pull pawl 28 is provided with a pawl shape which is bent backwards, and the front ends of the push pawl 27 and the pull pawl 28 are both clamped on the ratchet of the ratchet 20.
The moving principle of the blood sampling piston is as follows: by continuously pressing the blood sampling pressing block 16, the middle part of the blood sampling pressing block 16 is hinged to the outer side of the blood sampling sleeve 14, and the blood sampling pressing block 16 can rotate around a hinged shaft thereof, so that the rear end of the blood sampling pressing block 16 drives the first connecting rod 18 and the second connecting rod 19 to move up and down, the first connecting rod 18, the second connecting rod 19, the first swing rod 25 and the second swing rod 26 form a quadrilateral structure, the first swing rod 25 and the second swing rod 26 play a role in limiting, and thus, the first connecting rod 18 and the second connecting rod 19 drive the push claw 27 and the pull claw 28 hinged thereto to enable the ratchet 20 to rotate. It should be noted that the ratchet 20 can only rotate in one direction, and when the ratchet 20 rotates, the spur gear 21 will also be driven to rotate, and the spur gear 21 will drive the rack 23 to move backwards, so that the blood sampling rod 22 will drive the blood sampling piston to move backwards, forming a negative pressure, and drawing out the blood of the patient.
When the device is used, the sleeve cap 3 is firstly pulled out, then the first protective cap 4 and the second protective cap 5 are turned over to a place with the rear ends out of the way, then the position of the adjusting rod 8 relative to the swinging sleeve 7 is adjusted according to needs, and the positioning is carried out by using a positioning screw according to the scale on the adjusting rod 8. Then, the needle 2 is used for puncturing the artery of the patient, and then the blood sampling pressing block 16 is continuously pressed, so that the blood sampling rod 22 moves backwards, negative pressure is formed in the blood sampling tube 1, and the artery blood of the patient is extracted.
In addition, when the experience of medical personnel is rich and assistance is not needed, the device can be used for drawing blood by directly pulling the blood taking sheet 15 without installing the condom 6 and the blood taking sleeve 14.
After blood sampling, the adjusting rod 8 is turned backwards, the first protective cap 4 and the second protective cap 5 are turned forwards, the second protective cap 5 is turned forwards continuously, and the needle head 2 is bent. And the condom 6 and collection sleeve 14 are selectively discarded as required.
The specific embodiments described herein are merely illustrative of the spirit of the invention. Various modifications or additions may be made to the described embodiments or alternatives may be employed by those skilled in the art without departing from the spirit or scope of the invention as defined in the appended claims.
Although the terms of the blood collecting tube 1, the needle 2, the cap 3, the first protective cap 4, the second protective cap 5, the safety sleeve 6, the swinging sleeve 7, the adjusting rod 8, the positioning plate 9, the sloping plate 10, the sliding sleeve 11, the sliding rod 12, the safety spring 13, the blood collecting sleeve 14, the blood collecting sheet 15, the blood collecting pressing block 16, the return spring 17, the first connecting rod 18, the second connecting rod 19, the ratchet 20, the spur gear 21, the blood collecting rod 22, the rack 23, the fold sleeve 24, the first swinging rod 25, the second swinging rod 26, the push claw 27, the pull claw 28 and the like are used more often herein, the possibility of using other terms is not excluded. These terms are used merely to more conveniently describe and explain the nature of the present invention; they are to be construed as being without limitation to any additional limitations that may be imposed by the spirit of the present invention.
Claims (6)
1. The utility model provides an artery blood taking needle of controllable depth of penetration, includes a blood sampling section of thick bamboo (1), sliding connection has the blood sampling piston in a blood sampling section of thick bamboo (1), and blood sampling piston rear end fixedly connected with blood sampling pole (22), and there are syringe needle (2) blood sampling section of thick bamboo (1) front end through threaded connection, and the cover cap (3), its characterized in that are equipped with to syringe needle (2) front end cover: the rear end of the needle head (2) is hinged with a first protective cap (4) which can be turned over forwards and backwards, and the front end of the first protective cap (4) is hinged with a second protective cap (5) which can be turned over left and right; a detachable condom (6) is sleeved outside the blood collection barrel (1), a swinging sleeve (7) capable of being turned back and forth is hinged to the side end of the condom (6), an adjusting rod (8) capable of moving back and forth is connected onto the swinging sleeve (7) in a sliding manner, and a positioning plate (9) capable of swinging back and forth is hinged to the front end of the adjusting rod (8); the thickness of the blood collecting cylinder (1) is singly sleeved with a detachable blood collecting sleeve (14), and a blood collecting pressing block (16) for controlling the movement of the blood collecting rod (22) is arranged on the blood collecting sleeve (14).
2. An arterial blood collection needle with controllable puncture depth according to claim 1, characterized in that: the first protective cap (4) and the second protective cap (5) are both inwards provided with a concave groove, the first protective cap (4) and the second protective cap (5) are hinged through a rotating shaft, and the rotating shaft is positioned on one side provided with the concave groove.
3. An arterial blood collection needle with controllable puncture depth according to claim 1, characterized in that: the lateral ends of the condom (6), the blood sampling sleeve (14) and the swinging sleeve (7) are all provided with through threaded holes, and the threaded holes are all in threaded connection with positioning screws; the side ends of the blood collecting cylinder (1) and the adjusting rod (8) are provided with scale marks.
4. An arterial blood collection needle with controllable puncture depth according to claim 1, characterized in that: locating plate (9) expansion end outside is inwards opened there is the U-shaped mouth, locating plate (9) downside articulates there is swash plate (10), swash plate (10) bottom articulates there is sliding sleeve (11), sliding sleeve (11) sliding connection has slide bar (12), slide bar (12) fixed connection in adjust pole (8) side, slide bar (12) the equal cover of downside is equipped with safety spring (13) on sliding sleeve (11).
5. An arterial blood collection needle with controllable puncture depth according to claim 1, characterized in that: and a pleat sleeve (24) made of soft plastics is arranged above the hinged position of the first protective cap (4) and the second protective cap (5), and the head end and the tail end of the pleat sleeve (24) are fixedly connected with the first protective cap (4) and the second protective cap (5) respectively.
6. An arterial blood collection needle with controllable puncture depth according to claim 1, characterized in that: the blood sampling pressure block (16) is L-shaped, the front end of the middle of the blood sampling pressure block (16) is hinged to the outer side of the blood sampling sleeve (14), the rear end of the blood sampling pressure block (16) is hinged to a first connecting rod (18) and a second connecting rod (19), the tail end of the first connecting rod (18) is hinged to a first swing rod (25), the tail end of the second connecting rod (19) is hinged to a second swing rod (26), the tail ends of the first swing rod (25) and the second swing rod (26) are rotatably connected to the side end of the blood sampling sleeve (14) through a positioning shaft, the positioning shaft is rotatably connected with a ratchet wheel (20), the end face of the ratchet wheel (20) is fixedly connected with a straight gear (21), the straight gear (21) is meshed with a rack (23), and the rack (23) is fixedly connected to the;
the articulated shaft department of first connecting rod (18) and first pendulum rod (25) still articulates there is pawl (27) of pushing away, the articulated shaft department of second connecting rod (19) and second pendulum rod (26) still articulates there is pawl (28) of pulling, push away pawl (27) and pull and all be provided with the torsional spring on the axis of rotation of pawl (28), push away pawl (27) front end is the acute angle prong, it is provided with the claw form of backward bending to pull pawl (28) front end, push away pawl (27) and pull pawl (28) front end all block in on the ratchet of ratchet (20).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920921926.2U CN210330587U (en) | 2019-06-18 | 2019-06-18 | Artery blood taking needle capable of controlling puncture depth |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920921926.2U CN210330587U (en) | 2019-06-18 | 2019-06-18 | Artery blood taking needle capable of controlling puncture depth |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210330587U true CN210330587U (en) | 2020-04-17 |
Family
ID=70186588
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920921926.2U Expired - Fee Related CN210330587U (en) | 2019-06-18 | 2019-06-18 | Artery blood taking needle capable of controlling puncture depth |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210330587U (en) |
-
2019
- 2019-06-18 CN CN201920921926.2U patent/CN210330587U/en not_active Expired - Fee Related
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| Date | Code | Title | Description |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20200417 |