CN106419934B - Disposable hemostix for preventing secondary puncture - Google Patents
Disposable hemostix for preventing secondary puncture Download PDFInfo
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- CN106419934B CN106419934B CN201610979449.6A CN201610979449A CN106419934B CN 106419934 B CN106419934 B CN 106419934B CN 201610979449 A CN201610979449 A CN 201610979449A CN 106419934 B CN106419934 B CN 106419934B
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- Prior art keywords
- needle core
- elastic
- barb
- arm
- pushing device
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- 210000000078 claw Anatomy 0.000 claims description 19
- 230000005489 elastic deformation Effects 0.000 claims description 3
- 238000000034 method Methods 0.000 claims description 3
- 230000000694 effects Effects 0.000 description 12
- 238000013016 damping Methods 0.000 description 10
- 230000009467 reduction Effects 0.000 description 9
- 230000035515 penetration Effects 0.000 description 7
- 239000008280 blood Substances 0.000 description 5
- 210000004369 blood Anatomy 0.000 description 5
- 238000010241 blood sampling Methods 0.000 description 3
- 208000010727 head pressing Diseases 0.000 description 3
- 208000019300 CLIPPERS Diseases 0.000 description 2
- 239000006096 absorbing agent Substances 0.000 description 2
- 208000021930 chronic lymphocytic inflammation with pontine perivascular enhancement responsive to steroids Diseases 0.000 description 2
- 230000007246 mechanism Effects 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 230000001681 protective effect Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 1
- 238000010304 firing Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
Classifications
-
- 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
- A61B5/151—Devices specially adapted for taking samples of capillary blood, e.g. by lancets, needles or blades
- A61B5/15101—Details
- A61B5/15115—Driving means for propelling the piercing element to pierce the skin, e.g. comprising mechanisms based on shape memory alloys, magnetism, solenoids, piezoelectric effect, biased elements, resilient elements, vacuum or compressed fluids
- A61B5/15117—Driving means for propelling the piercing element to pierce the skin, e.g. comprising mechanisms based on shape memory alloys, magnetism, solenoids, piezoelectric effect, biased elements, resilient elements, vacuum or compressed fluids comprising biased elements, resilient elements or a spring, e.g. a helical spring, leaf spring, or elastic strap
-
- 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
- A61B5/150022—Source of blood for capillary blood or interstitial fluid
-
- 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
- A61B5/151—Devices specially adapted for taking samples of capillary blood, e.g. by lancets, needles or blades
- A61B5/15101—Details
- A61B5/15103—Piercing procedure
- A61B5/15107—Piercing being assisted by a triggering mechanism
- A61B5/15113—Manually triggered, i.e. the triggering requires a deliberate action by the user such as pressing a drive button
-
- 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
- A61B5/151—Devices specially adapted for taking samples of capillary blood, e.g. by lancets, needles or blades
- A61B5/15101—Details
- A61B5/15126—Means for controlling the lancing movement, e.g. 2D- or 3D-shaped elements, tooth-shaped elements or sliding guides
Landscapes
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Heart & Thoracic Surgery (AREA)
- Medical Informatics (AREA)
- Biophysics (AREA)
- Pathology (AREA)
- Engineering & Computer Science (AREA)
- Biomedical Technology (AREA)
- Hematology (AREA)
- Physics & Mathematics (AREA)
- Molecular Biology (AREA)
- Surgery (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Measurement Of The Respiration, Hearing Ability, Form, And Blood Characteristics Of Living Organisms (AREA)
- Percussion Or Vibration Massage (AREA)
Abstract
The utility model provides a prevent disposable hemostix of secondary puncture, includes shell, nook closing member, spring and pushes away hair ware, its characterized in that: a simple harmonic vibration attenuator is arranged between the outer side of the needle core and the inner wall of the hair pushing device or the shell, the simple harmonic vibration attenuator consists of an elastic arm and a barb, one of the elastic arm and the barb is arranged on the outer side of the needle core, the other of the elastic arm and the barb is arranged on the inner wall of the hair pushing device or the shell, a hook surface is arranged on the barb and corresponds to the hook surface, an impact surface is arranged at the arm end of the elastic arm, when the needle core shoots, the hook surface on the barb slides over the impact surface of the arm end of the elastic arm, and when the needle core retracts, the hook surface on the barb collides with the impact surface of the arm end of the elastic arm, so that the simple harmonic vibration after shooting of the needle core is interfered by the cooperation, and the possibility of secondary puncture of the needle core is avoided.
Description
Technical Field
The invention relates to the field of medical blood sampling devices, in particular to a disposable blood sampling device for preventing secondary puncture. The hemostix belongs to a disposable safety hemostix with an ejection mechanism and a head pressing type.
Background
Among the medical hemostix, the disposable hemostix is popular with medical staff and patients because of its small volume, safe use and convenient operation, and is currently used in a large amount in various medical institutions and diabetics. The hemostix is provided with the ejection mechanism, has compact structure and is integrally disposable, safe and convenient, and therefore, has strong market development potential.
Chinese patent CN105816188A (patent application number 201610158481.8) discloses an invention patent application named "improved disposable safety lancet with adjustable puncture depth". This patent application is connected original adjusting part on pushing away the hair-dryer, changes to be connected adjusting part on the shell, because rotate adjusting part and push away the hair-dryer irrelevant this moment, so can not lead to the mistake to launch, has solved in the past and has rotated the problem that leads to the mistake to launch to cause the product extravagant easily when adjusting the head. However, in practical application, the possibility of secondary puncture still exists, namely, after the primary emission of the needle core, the spring drives the needle core to make simple harmonic vibration back and forth, so that secondary puncture is easy to generate, and pain of a user is aggravated. Therefore, how to effectively solve the above problems is the subject of the present invention.
Disclosure of Invention
In view of the above-mentioned shortcomings of the prior art, the present invention provides a disposable hemostix capable of preventing secondary puncture, which aims to solve the problem of secondary puncture existing in the conventional hemostix during the launching process.
In order to achieve the above purpose, the invention adopts the following technical scheme: a disposable hemostix for preventing secondary puncture comprises a shell, a needle core, a spring and a hair pusher.
At least two elastic claws are positioned in the shell, and all the elastic claws form an elastic clamp together.
The needle core is clamped in the elastic clamp, the spring is propped against the tail of the needle core and acts on the ejection direction of the needle core, and the elastic clamp clamps the needle core by utilizing the clamping hook at the tail end and the clamping force to form locking before ejection.
The hair pusher head extends out from the front end of the shell, the hair pusher body is connected in the shell in a sliding way, and inclined planes which force the tail ends of the elastic clamps to open laterally are arranged on the faces of the hair pusher corresponding to the elastic claws.
The innovation is that: a simple harmonic vibration attenuator is arranged between the outer side of the needle core and the inner wall of the hair pushing device or the shell, the simple harmonic vibration attenuator consists of an elastic arm and a barb, one of the elastic arm and the barb is arranged on the outer side of the needle core, the other of the elastic arm and the barb is arranged on the inner wall of the hair pushing device or the shell, a hook surface is arranged on the barb, an impact surface is arranged at the arm end of the elastic arm corresponding to the hook surface, when the needle core shoots, the hook surface on the barb slides across the impact surface of the arm end of the elastic arm, and when the needle core retracts, the hook surface on the barb collides with the impact surface of the arm end of the elastic arm, so that the simple harmonic vibration after the needle core shoots is interfered by the cooperation.
The relevant contents and changes of the technical scheme are explained as follows:
1. in the above scheme, the basic structure, the functions and the actions of the shell, the needle core, the spring and the hair pusher are all in the prior art. Can be seen in the background of the invention technical content cited in the technology.
2. In the above-described arrangement, the first and second embodiments, the front of the front end refers to the direction of the needle point of the hemostix.
3. In the scheme, the front end of the hair pusher or the head of the shell can be additionally provided with an adjusting head structure, so that the puncture depth can be adjusted.
4. In the above scheme, the needle core head part can be provided with a protective cap structure, and the structural form of the protective cap can be a twist cap type or a cap type. This does not affect the achievement of the object of the present invention.
5. In the above scheme, the simple harmonic vibration attenuator is designed between the outer side of the needle core and the inner wall of the hair pusher or between the outer side of the needle core and the inner wall of the shell.
6. In the above scheme, in order to increase the vibration reduction effect, a bulge can be arranged at the arm end of the elastic arm, a groove is arranged beside the barb corresponding to the bulge, and when the spring is in a free state, the bulge just falls into the groove, so that an auxiliary vibration absorber is formed.
7. In the above scheme, at least two elastic sheets are arranged on the side surface of the head of the needle core for increasing the vibration reduction effect, the elastic sheets are of an extending structure on the needle core, the elastic deformation direction is radial of the needle core, and the elastic sheets are uniformly arranged in the circumferential direction of the needle core; the elastic sheets are provided with cylindrical inner walls at the front part of the hair pushing device, and when the needle core slides relative to the hair pushing device, each elastic sheet on the needle core is in sliding fit with the cylindrical inner walls, so that another auxiliary shock absorber is formed.
The design principle of the invention is as follows: in order to prevent secondary puncture after the needle core of the hemostix is emitted, a simple harmonic vibration attenuator is designed between the outer side of the needle core and the inner wall of the hair pusher or between the outer side of the needle core and the inner wall of the shell, and the simple harmonic vibration attenuator consists of an elastic arm and a barb, and achieves the purpose of interference vibration attenuation by utilizing the matching of a hook surface on the barb and an impact surface of the arm end of the elastic arm. When the needle core shoots, the hook surface on the barb slides across the collision surface of the arm end of the elastic arm, and when the needle core retracts, the hook surface on the barb collides with the collision surface of the arm end of the elastic arm, so that the simple harmonic vibration after the shooting of the needle core is interfered by the cooperation, and the possibility of secondary puncture of the needle core is avoided.
Due to the application of the technical scheme, compared with the prior art, the invention has the following advantages and effects:
1. the simple harmonic vibration attenuator consists of the elastic arm and the barb, and the purpose of interference vibration attenuation is achieved by matching the hook surface on the barb with the collision surface at the arm end of the elastic arm. This is the most important vibration damping means of the present invention.
2. If the elastic arm end is provided with the bulge and the groove is arranged beside the barb, the bulge and the groove generate damping when the needle core makes simple harmonic vibration along with the spring, so that the auxiliary vibration reduction means is provided by the invention.
3. In the invention, if the elastic sheet is arranged on the side surface of the head of the needle core, the cylindrical inner wall is arranged at the front part of the hair pusher corresponding to the elastic sheet, and the elastic sheet is in sliding fit with the cylindrical inner wall. This design has a guiding effect on the penetration of the needle core and a damping effect on the simple harmonic vibration after the penetration of the needle core, so that the design is also another auxiliary vibration reduction means of the invention.
Drawings
FIG. 1 is an exploded perspective view of a lancing device according to an embodiment of the present invention;
FIG. 2 is a perspective view of a hemostix according to an embodiment of the present invention;
FIG. 3 is a perspective view of a core pin according to an embodiment of the present invention;
FIG. 4 is a perspective view of a hair clipper according to an embodiment of the present invention;
FIG. 5 is a perspective cross-sectional view of a hair clipper in accordance with an embodiment of the present invention;
FIG. 6 is a sectional view showing an initial assembled state of the embodiment of the present invention;
FIG. 7 shows an embodiment of the present invention a sectional view of the needle cap in the removed state;
FIG. 8 is a cross-sectional view of an embodiment of the invention in a core firing state;
fig. 9 is a cross-sectional view of an embodiment of the present invention in a attenuating state of the needle.
The reference numerals in the above figures are explained as follows:
1. a housing; 2. a tail cover; 3. a needle core; 4. a spring; 5. a hair pusher; 6. twisting the cap; 7. an elastic claw; 8. an inclined plane; 9. a clamping hook; 10. an adjusting ring; 11. an end face; 12. an elastic arm; 13. a barb; 14. a hook surface; 15. a collision surface; 16. a protrusion; 17. a groove; 18. an elastic sheet; 19. a cylindrical inner wall.
Detailed Description
The invention is further described below with reference to the accompanying drawings and examples:
examples: disposable hemostix for preventing secondary puncture
As shown in fig. 1 to 5, the blood collector consists of a shell 1, a tail cover 2, a needle core 3, a spring 4, a hair pusher 5, an adjusting ring 10 and a twisting cap 6 (see fig. 1).
In the assembled state (see fig. 2), the tail cap 2 is covered at the rear end port of the housing 1, and the tail cap 2 extends out of the housing 1 into two elastic claws 7 (see fig. 1) which are symmetrically arranged in the facing surface, and the two elastic claws 7 together form an elastic clamp. The needle core 3 is clamped in an elastic clamp, a spring 4 is propped against the tail of the needle core 3 and acts on the ejection direction of the needle core 3, and the elastic clamp clamps the needle core 3 by utilizing a tail end clamping hook 9 (see figure 1) and clamping force to form pre-ejection locking. The head of the hair pusher 5 extends out from the front end of the shell 1, the hair pusher 5 is connected in the shell 1 in a sliding way, and inclined planes 8 (see figure 4) for forcing the tail ends of the elastic clamps to open laterally are arranged on the head of the hair pusher 5 corresponding to the elastic claws 7. The twist cap 6 is mounted on the lancet head.
The above matters in this embodiment are all in the prior art, and the innovation of the present invention is that: a simple harmonic vibration attenuator is arranged between the outer side of the needle core 3 and the inner wall of the hair pushing device 5, the simple harmonic vibration attenuator is composed of an elastic arm 12 and a barb 13, the barb 13 is arranged on the outer side of the needle core 3 (see fig. 3), the elastic arm 12 is arranged on the inner wall of the hair pushing device 5 (see fig. 4 and 5), a hook surface 14 (see fig. 3) is arranged on the barb 13, an impact surface 15 (see fig. 5) is arranged at the arm end of the elastic arm 12 corresponding to the hook surface 14, when the needle core 3 shoots, the hook surface 14 on the barb 13 slides across the impact surface 15 of the arm end of the elastic arm 12, and when the needle core 3 retracts, the hook surface 14 on the barb 13 collides with the impact surface 15 of the arm end of the elastic arm 12, so that simple harmonic vibration after shooting of the needle core 3 is interfered by cooperation. This is the most important vibration damping means of the present invention.
The number of the elastic arms 12 is two, and the elastic arms 12 are symmetrically arranged on the hair pusher 5, the elastic arms 12 are cantilever structures on the hair pusher 5, and the arm bodies of the cantilevers are parallel to the axis of the hair pusher 5; the number of the barbs 13 is two, the barbs 13 are symmetrically arranged on the outer side of the needle core 3, and the positions of the barbs 13 correspond to the elastic arms 12. In the cross section of the blood collector of the embodiment, the two elastic arms 12 and the two elastic claws 7 are arranged in a crisscross manner.
In order to increase the vibration damping effect, the invention is provided with a bulge 16 (see fig. 5) at the arm end of the elastic arm 12, and a groove 17 (see fig. 3) is arranged beside the barb 13 corresponding to the bulge 16, and the bulge 16 just falls into the groove 17 when the spring 4 is in a free state. When the needle core 3 vibrates along with the spring 4 in a simple harmonic mode, the bulge 16 and the groove 17 generate damping, and the auxiliary vibration reduction means is provided by the invention.
In order to guide the needle core 3 and increase the vibration reduction effect, the invention is provided with at least two elastic sheets 18 on the side surface of the head of the needle core 3, wherein the elastic sheets 18 are of an extending structure on the needle core 3, the elastic deformation direction is radial of the needle core 3, and the elastic sheets 18 are uniformly arranged in the circumferential direction of the needle core 3; the front part of the hair pushing device 5 corresponding to the elastic piece 18 is provided with a cylindrical inner wall 19, and when the needle core 3 slides relative to the hair pushing device 5, each elastic piece 18 on the needle core 3 is in sliding fit with the cylindrical inner wall 19. This design has a guiding effect on the penetration of the needle core 3 and a damping effect on the simple harmonic vibration after the penetration of the needle core 3, so that the design is also another auxiliary vibration reduction means of the invention.
The embodiment of the invention has the following operation processes:
1. initial assembled state
As shown in fig. 6, the needle core 3 is clamped in an elastic clamp, a spring 4 is pressed against the tail of the needle core 3 and acts in the ejection direction of the needle core 3, and the elastic clamp clamps the needle core 3 by utilizing a tail end clamping hook 9 (see fig. 1) and clamping force to form pre-ejection locking.
2. Needle cap removal state
Referring to fig. 7, when the blood taking needle is used, the twisting cap 6 is twisted first, and as the convex arc edge on the twisting cap 6 is in running fit with the concave arc opening on the adjusting ring 10, the connecting rod on the needle core 3 drives the protecting rod on the needle core 3 to rotate, and finally the neck between the protecting rod and the main body is broken by rotation, and then the twisting cap 6 is pulled out.
3. State of needle core emission
Referring to fig. 8, the end face 11 of the head of the hair pusher 5 is pressed against the blood sampling part of the human body, when the head of the hair pusher 5 is pressed, the hair pusher 5 moves backward relative to the housing 1, the upper inclined surface 8 of the hair pusher 5 forces the elastic claw 7 to open laterally, and when the pressing exceeds the unhooking critical point, the trigger needle core 3 unhooks and enters a shooting puncture state under the pushing of the spring 4, so as to generate shooting puncture.
4. Attenuation state of needle core
Referring to fig. 9, when the needle core 3 shoots, the hook surface 14 on the barb 13 slides over the collision surface 15 of the arm end of the elastic arm 12, and when the needle core 3 retracts, the hook surface 14 on the barb 13 collides with the collision surface 15 of the arm end of the elastic arm 12, so that the simple harmonic vibration of the needle core 3 after shooting is interfered by the cooperation. This is the most important vibration damping means of the present invention. The boss 16 and the recess 17 produce damping when the needle core vibrates with the spring in simple harmonic mode, so that the invention is an auxiliary vibration reduction means. The resilient tab 18 is in sliding engagement with the cylindrical inner wall 19. This design has a guiding effect on the penetration of the needle core 3 and a damping effect on the simple harmonic vibration after the penetration of the needle core 3, so that the design is also another auxiliary vibration reduction means of the invention.
Other embodiments and variations of the present invention are described below:
1. the embodiment of the invention is a twist cap type head pressing type disposable blood collector structure, and after reading the invention, a person skilled in the art knows that the invention is also applicable to the cap type head pressing type disposable blood collector structure.
2. In the above embodiments, the inclined surfaces 8 provided on the hair pusher 5 are all planar. In practice, four types are included in the present invention, the first being a bevel in planar form; the second is a bevel in the form of a concave surface (a bevel being straight in the direction of inclination, a concave or convex surface in the direction of perpendicular inclination, but essentially also a bevel); the third is an inclined plane in the form of a conical surface; the fourth is a bevel in the form of a cambered surface (the bevel is not flat in the direction of inclination with a concave or convex arc, but is also essentially a bevel). In practice, it can be determined according to practical situations.
3. In the above embodiment, one spring clip formed by the two spring claws 7 together is an extension structure extending from the inner end face of the tail cap 2. The invention is not limited thereto and the spring clip may be formed directly by extension of the housing 1. For example, the shell 1 is designed to be formed by splicing an upper half and a lower half, each half of the shell is extended with an elastic claw, and when the two halves of the shell are spliced, the two elastic claws form an elastic clamp together. At this time, the tail cap 2 may be omitted at the same time and incorporated into the two-half type housing. Therefore, the tail cap 2 and the provision of the elastic claw structure extending on the tail cap 2 are not necessarily written in claim 1, which is a case understood and recognized by those skilled in the art.
4. In the above embodiments, the elastic clips are each formed by symmetrically arranging the facing surfaces of the two elastic claws together. However, the number of the elastic claws is not limited to two, and more than two, such as three, four, five, etc., can be included, and the elastic claws can be arranged around the periphery of the needle core, so that the same technical effect can be achieved. This is a variation that is readily understood by one skilled in the art.
5. In the above embodiment, the hemostix head is provided with the adjusting ring 10 for realizing the multi-gear puncture depth adjustment. However, the present invention is not limited thereto, and is equally applicable to the present invention even if the hemostix head has no structure of the adjusting head for adjusting the penetration depth. Therefore, the adjustment ring 10 is not written as a necessary condition in claim 1. This is a variation that is readily understood by one skilled in the art.
6. In the above embodiment, the simple harmonic vibration damper is provided between the outside of the core 3 and the inner wall of the ejector 5. However, the present invention is not limited thereto, and it is equally possible to provide a simple harmonic vibration attenuator between the outer side of the needle core 3 and the inner wall of the housing 1, which is a variation as will be readily understood by those skilled in the art.
7. In the above embodiment, the barbs 13 are provided on the outside of the core 3 (see fig. 3) and the resilient arms 12 are provided on the inner wall of the hair pusher 5 (see fig. 4 and 5). However, the invention is not limited thereto, but it is equally feasible to provide the barbs 13 on the inner wall of the hair pusher 5 and the resilient arms 12 on the outside of the needle core 3, as a variation which is easily understood by a person skilled in the art.
The above embodiments are provided to illustrate the technical concept and features of the present invention and are intended to enable those skilled in the art to understand the content of the present invention and implement the same, and are not intended to limit the scope of the present invention. All equivalent changes or modifications made in accordance with the spirit of the present invention should be construed to be included in the scope of the present invention.
Claims (2)
1. A disposable hemostix for preventing secondary puncture comprises a shell (1), a needle core (3), a spring (4) and a hair pusher (5);
at least two elastic claws (7) are positioned in the shell (1), and all the elastic claws (7) form an elastic clamp together;
the needle core (3) is clamped in the elastic clamp, the spring (4) is propped against the tail of the needle core (3) and acts on the ejection direction of the needle core (3), and the elastic clamp clamps the needle core (3) by utilizing the clamping hook (9) at the tail end and the clamping force to form locking before ejection;
the head of the hair pushing device (5) extends out from the front end of the shell (1), the body of the hair pushing device (5) is connected in the shell (1) in a sliding way, and inclined planes (8) for forcing the tail ends of the elastic clamps to open laterally are arranged on the faces of the hair pushing device (5) corresponding to the elastic claws (7);
the method is characterized in that: a simple harmonic vibration attenuator is arranged between the outer side of the needle core (3) and the inner wall of the hair pushing device (5), the simple harmonic vibration attenuator consists of an elastic arm (12) and a barb (13), the barb (13) is arranged on the outer side of the needle core (3), the elastic arm (12) is arranged on the inner wall of the hair pushing device (5), a hook surface (14) is arranged on the barb (13), a collision surface (15) is arranged at the arm end of the elastic arm (12) corresponding to the hook surface (14), when the needle core (3) shoots, the hook surface (14) on the barb (13) slides across the collision surface (15) at the arm end of the elastic arm (12), and when the needle core (3) retracts, the hook surface (14) on the barb (13) collides with the collision surface (15) at the arm end of the elastic arm (12) so as to cooperate to interfere the simple harmonic vibration after shooting of the needle core (3);
the arm end of the elastic arm (12) is provided with a bulge (16), a groove (17) is arranged beside the barb (13) corresponding to the bulge (16), and when the spring (4) is in a free state, the bulge (16) just falls into the groove (17);
the side surface of the head of the needle core (3) is at least provided with two elastic sheets (18), the elastic sheets (18) are of an extending structure on the needle core (3), the elastic deformation direction is radial to the needle core (3), and the elastic sheets (18) are uniformly arranged in the circumferential direction of the needle core (3); the front part of the hair pushing device (5) is provided with a cylindrical inner wall (19) corresponding to the elastic pieces (18), and when the needle core (3) slides relative to the hair pushing device (5), each elastic piece (18) on the needle core (3) is in sliding fit with the cylindrical inner wall (19).
2. The hemostix of claim 1, wherein: the number of the elastic arms (12) is two, the elastic arms are symmetrically arranged on the hair pushing device (5), the elastic arms (12) are cantilever structures on the hair pushing device (5), and the arm bodies of the cantilevers are parallel to the axis of the hair pushing device (5); the number of the barbs (13) is two, the barbs are symmetrically arranged on the outer side of the needle core (3), and the positions of the barbs (13) correspond to the elastic arms (12).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610979449.6A CN106419934B (en) | 2016-11-08 | 2016-11-08 | Disposable hemostix for preventing secondary puncture |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610979449.6A CN106419934B (en) | 2016-11-08 | 2016-11-08 | Disposable hemostix for preventing secondary puncture |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106419934A CN106419934A (en) | 2017-02-22 |
| CN106419934B true CN106419934B (en) | 2023-12-12 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201610979449.6A Active CN106419934B (en) | 2016-11-08 | 2016-11-08 | Disposable hemostix for preventing secondary puncture |
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| CN (1) | CN106419934B (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107007289B (en) * | 2017-05-25 | 2019-08-23 | 苏州施莱医疗器械有限公司 | Rear pressure type disposable blood taking device with spring correcting structure |
| CN107157494B (en) * | 2017-05-25 | 2019-08-23 | 苏州施莱医疗器械有限公司 | Press-type disposable blood taking device with spring correcting structure |
| CN108186029B (en) * | 2018-02-24 | 2019-12-27 | 苏州施莱医疗器械有限公司 | Tail pressing type disposable safety hemostix |
| TWI780828B (en) * | 2020-07-23 | 2022-10-11 | 仁寶電腦工業股份有限公司 | Inserting device and blood collection device |
| WO2022198440A1 (en) * | 2021-03-23 | 2022-09-29 | 苏州市开元医疗器械有限公司 | Press-type blood lancet |
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| FR1462305A (en) * | 1964-10-17 | 1966-04-15 | Preh Elektro Feinmechanik | Adjustment block intended in particular for adjustment and tuning devices |
| US5350393A (en) * | 1992-01-06 | 1994-09-27 | Inbae Yoon | Safety trocar penetrating instrument |
| CN103989484A (en) * | 2014-06-10 | 2014-08-20 | 苏州施莱医疗器械有限公司 | Disposable automatic blood taking needle for preventing second-time puncturing |
| CN206462998U (en) * | 2016-11-08 | 2017-09-05 | 苏州施莱医疗器械有限公司 | Prevent the disposable blood taking device of secondary puncture |
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- 2016-11-08 CN CN201610979449.6A patent/CN106419934B/en active Active
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| FR1462305A (en) * | 1964-10-17 | 1966-04-15 | Preh Elektro Feinmechanik | Adjustment block intended in particular for adjustment and tuning devices |
| US5350393A (en) * | 1992-01-06 | 1994-09-27 | Inbae Yoon | Safety trocar penetrating instrument |
| CN103989484A (en) * | 2014-06-10 | 2014-08-20 | 苏州施莱医疗器械有限公司 | Disposable automatic blood taking needle for preventing second-time puncturing |
| CN206462998U (en) * | 2016-11-08 | 2017-09-05 | 苏州施莱医疗器械有限公司 | Prevent the disposable blood taking device of secondary puncture |
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