Heel blood collector
By designing blood collection components with compression springs and specific tracks in the infant heel blood collector, the blade is automatically telescopic and parabolic motion is achieved, which solves the problem of insufficient blood collection when the existing blood collector is insufficient towing angle, and improves blood collection efficiency and safety.
Patent Information
- Application Number
- CN202420638982.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-03-29
- Publication Date
- 2025-05-06
- Estimated Expiration
- 2034-03-29
AI Technical Summary
When the rotation angle of the existing infant and young children's heel blood collector is insufficient, the blade cannot fully extend or extends at a small distance, resulting in insufficient blood collection or less bleeding.
A blood collector including a housing, a blood collection assembly and a compression spring is designed. The blood collection assembly includes a blade, a knife holder, a slider and a toggle switch. Through the compression spring, the slider and a knife holder slide on a specific track to achieve parabolic movement and automatic telescopicity of the blade.
The blood collector can ensure the complete cutting movement of the blade at a smaller rotation angle of the toggle switch, improve blood collection efficiency and bleeding volume, and enhance the convenience and safety of operation.
Smart Images
Figure CN222828594U_ABST
Abstract
Description
Technical Field
[0001] The present application relates to the technical field of blood sampling devices, and in particular to a heel blood sampling device. Background Art
[0002] As a tool, blood collection devices are widely used in medical institutions. There are currently two blood collection methods on the market. One is the acupuncture method, which is mainly used for fingertip blood collection in adults and is also partially used for heel blood collection in infants and young children. The other is the blade cutting method that acts on the blood collection site. This method is less painful and has a large amount of bleeding, and is mainly used for heel blood collection in infants and young children.
[0003] The patent name in the prior art is a new type of infant heel blood sampling device (application number 2016213331897), which includes a box body, a first gear and a second gear are arranged in the box body, a toggle switch is arranged on the first gear, an elastic connecting arm is arranged on the second gear, a blade is installed on the elastic connecting arm, and the box body is also provided with a knife outlet; a guide wall with a parabolic trajectory is arranged in the box body, and a guide column is arranged on the elastic connecting arm. Pressing the toggle switch causes the first gear to rotate around the first cylinder, the first gear meshes with the second gear to drive the second gear to rotate around the second cylinder, and the second gear drives the elastic connecting arm to rotate, thereby rotating the blade located on the elastic connecting arm, and by adding a guide wall and a guide column matched with the guide wall, the blade can move along the guide wall in a parabolic trajectory and extend out of the knife outlet to complete the blood sampling action.
[0004] According to the above-mentioned prior art, the operator needs to continuously turn the toggle switch to allow the toggle switch to turn to the designed angle so that the tip of the blade can perform a complete parabolic trajectory movement. When the rotation angle of the toggle switch is not enough, the tip of the blade may not extend from the blade outlet or extend a small distance, resulting in no wound or less bleeding. Therefore, there is still room for improvement in the prior art. Utility Model Content
[0005] The utility model aims to provide a heel blood sampling device to solve the defects and shortcomings of the prior art.
[0006] In order to achieve the above purpose, the utility model adopts the following technical solutions:
[0007] The invention comprises a shell and a blood sampling component located in the shell, the blood sampling component comprises a blade, a blade holder and a toggle switch, the blood sampling component further comprises a slider and a compression spring, the blade is located at one end of the blade holder, the end of the blade holder away from the blade is rotatably connected to the slider, the inner side wall of the shell has a first track for the slider to slide, the compression spring drives the slider to move from one end of the first track to the other end, the inner side wall of the shell has a second track for the blade holder to slide, the first track and the second track form an angle, the side wall of the shell has a knife exit, the second track is located between the first track and the knife exit, when the compression spring drives the slider to move from one end of the first track to the other end, and the knife holder slides in the second track, the toggle switch is rotatably connected in the shell, when the toggle switch is in a locked state, one end of the toggle switch abuts against the slider, and the compression spring is in a compressed state.
[0008] Preferably, the first track is vertically arranged along the inner side wall of the shell, and the second track is inclined upwardly arranged from one end close to the first track to the other end close to the knife outlet.
[0009] Preferably, a third track is provided in the shell, and the third track can be used for placing the compression spring, and the expansion and contraction direction of the compression spring is consistent with the length direction of the third track.
[0010] Preferably, the toggle switch is provided with a first safety piece at one end close to the slider, and when the toggle switch is in a locked state, the first safety piece is stuck in the side wall of the first track, and the first safety piece is abutted against the slider.
[0011] Preferably, a second safety piece is provided on the side wall of the toggle switch, a blocking plate is provided on the inner side wall of the housing, and the side wall of the second safety piece abuts against the side wall of the blocking plate.
[0012] Preferably, a side wall of the shell is provided with an installation opening, the compression spring is placed in the installation opening, and a cover plate is clamped and fixed in the installation opening.
[0013] Preferably, the toggle switch is provided with a plurality of anti-slip strips on a side wall away from one end of the slider.
[0014] In summary, the present application includes at least one of the following beneficial technical effects:
[0015] 1. When the blood collector is collecting blood from the heel, press the toggle switch. As long as the toggle switch is rotated at a small angle, the locking state of the slider on the toggle switch is unlocked, and then the compression spring allows the slider to slide in the first track, and at the same time, the knife seat slides in the second track at the end away from the slider. When the slider slides a certain distance, the knife seat slides from the end away from the slider to the end away from the first track of the second track. At this time, the blade extends from the knife outlet, and then the compression spring continues to push the slider to move in the first track, and at the same time, the knife seat moves from the end of the second track close to the knife outlet to the other end at the end away from the slider. At this time, the blade is retracted from the knife outlet into the shell. During the whole process, the compression spring recovers from the compressed state to the relaxed state, and the tip of the blade will extend from the knife outlet and the retracted motion trajectory is a parabola, so that a blood incision can be quickly made on the blood collection area of the heel. Since the release time of the compression spring is short, the blade can quickly cut the skin, allowing the blood collector to perform a complete cutting movement, thereby improving the convenience of the blood collector;
[0016] 2. The first safety piece and the second safety piece can prevent the toggle switch from rotating under a small external force after the safety state is released. Only under the action of strong pressure can the toggle switch rotate, and the first safety piece and the second safety piece will break or bend, so that the first safety piece will not lock the slider, thereby improving the safety of the blood collection device. BRIEF DESCRIPTION OF THE DRAWINGS
[0017] Figure 1 It is a structural schematic diagram of the utility model blood sampling device;
[0018] Figure 2 It is the internal schematic diagram of the blood sampling device of the utility model;
[0019] Figure 3 It is a structural schematic diagram of the slide block and the knife seat of the utility model;
[0020] Figure 4 It is a schematic diagram of the interior of half of the housing of the utility model;
[0021] Figure 5 It is a structural schematic diagram of the toggle switch of the utility model;
[0022] Figure 6 It is a schematic diagram of the interior of the blood sampling device of the utility model in use;
[0023] Figure 7 It is an internal schematic diagram of the blood sampling device after the utility model is used.
[0024] In the figure: 1. shell; 3. blood collection component; 4. safety port; 5. toggle switch; 6. blade; 7. blade holder; 8. slider; 9. compression spring; 10. partition bar; 11. first track; 12. third track; 13. first limiting block; 14. third limiting block; 15. waist ring; 16. second track; 17. second limiting block; 18. blade outlet; 19. first safety plate; 20. second safety plate; 21. blocking plate; 22. installation port; 23. cover plate; 24. anti-slip strip; 25. limit groove. DETAILED DESCRIPTION
[0025] The utility model is further described below in conjunction with the accompanying drawings.
[0026] The embodiment of the present application discloses a heel blood sampler.
[0027] Reference Figure 1 and Figure 2 , including a shell 1 and a blood collection component 3, the blood collection component 3 is located in the shell 1, and the side wall of the shell 1 has a safety opening 4.
[0028] Reference Figure 2 , Figure 3 and Figure 4 The blood sampling assembly 3 includes a toggle switch 5, a blade 6, a knife seat 7, a slider 8 and a compression spring 9. The inner side wall of the shell 1 is integrally provided with three mutually parallel partition bars 10, and the partition bars 10 are vertically arranged. A first track 11 is formed between the middle partition bar 10 and one partition bar 10, and a third track 12 is formed between the middle partition bar 10 and another partition bar 10. The side wall of the slider 8 is integrally provided with a first limiting block 13 and a third limiting block 14. The first limiting block 13 and the third limiting block 14 can move in the first track 11 and the third track 12 respectively along the length direction of the partition bar 10. The compression spring 9 is located in the third track 12. The compression spring 9 drives the slider 8 to move along the length direction of the partition bar 10. The side wall of the shell 1 is integrally provided with a waist-shaped ring 15, and a second track is formed in the waist-shaped ring 15 16, the second track 16 is arranged upward at an angle of 45°, one end of the knife seat 7 is rotatably connected to the side wall of the slider 8, and the knife seat 7 is integrally provided with a second limiting block 17 on the side wall away from the end of the slider 8, and the second limiting block 17 slides in the second track 16, and the blade 6 is fixed to the knife seat 7 on the side away from the second limiting block 17, and a knife outlet 18 is provided on the side wall of the shell 1, and the knife outlet 18, the second track 16, and the third track 12 are arranged horizontally with the first track 11, and the toggle switch 5 is rotatably connected in the shell 1, and one end of the toggle switch 5 passes through the insurance port 4, and the toggle switch 5 is integrally provided with a first safety piece 19 on the side wall away from the insurance port 4, and a limiting groove 25 for inserting the first safety piece 19 is provided on the side wall of the first track 11, and the side wall of the first safety piece 19 abuts against one end of the slider 8.
[0029] Reference Figure 2 , Figure 6 and Figure 7 , press the toggle switch 5 to unlock the locking state of the slider 8, and then the compression spring 9 allows the slider 8 to slide in the first track 11, and at the same time, the knife seat 7 slides in the second track 16 at the end away from the slider 8. When the slider 8 slides a certain distance, the knife seat 7 slides from the end away from the slider 8 to the end of the second track 16 away from the first track 11. At this time, the blade 6 extends out from the knife outlet 18, and then the compression spring 9 continues to push the slider 8 to move in the first track 11, and at the same time, the knife seat 7 moves from the end of the second track 16 close to the knife outlet 18 to the other end at the end away from the slider 8. At this time, the blade 6 retracts from the knife outlet 18 into the housing 1. During the whole process, the compression spring 9 recovers from the compressed state to the relaxed state, and the tip of the blade 6 extends from the knife outlet 18 during the retraction process.
[0030] Reference Figure 4 and Figure 5 The toggle switch 5 is integrally provided with a second safety piece 20 on the side wall near one end of the first safety piece 19. The second safety piece 20 is located in the clockwise direction of the first safety piece 19. The side wall of the housing 1 is integrally provided with a blocking plate 21. The side wall of the second safety piece 20 abuts against the side wall of the blocking plate 21. The blocking plate 21 can limit the second safety piece 20 from rotating clockwise. Under the resistance of the first and second safety pieces 19 and 20, the user can be prevented from accidentally touching the toggle switch 5 and causing the blade 6 to fire accidentally. After the blade 18 is aligned with the blood collection area of the heel, the toggle switch 5 is pressed hard. When the force reaches a certain level, the first and second safety pieces 19 and 20 will be broken. Then the toggle switch 5 rotates, so that one end of the toggle switch 5 cancels the restriction on the slider 8, and then the slider 8 is ejected under the drive of the compression spring 9.
[0031] Reference Figure 2 The bottom of the shell 1 is provided with an installation opening 22, and a cover plate 23 is fixedly connected in the installation opening 22. When installing the blood sampling assembly 3, the slider 8, the knife seat 7 and the toggle switch 5 are installed on the side wall of the half shell 1, and then the other half shell 1 and the half shell 1 form the shell 1, and the compression spring 9 is passed through the installation opening 22, so that the compression spring 9 is located in the third track 12 until one end of the compression spring 9 abuts against one end surface of the third limiting block 14, and the cover plate 23 is fixedly connected in the installation opening 22, so that the other end of the compression spring 9 abuts against the inner end surface of the cover plate 23, thereby improving the convenience of installing the blood sampling device.
[0032] The toggle switch 5 is integrally provided with a plurality of anti-slip strips 24 above one end away from the slider 8. The plurality of anti-slip strips 24 can increase the friction between the operator's finger and the toggle switch 5, and prevent the toggle switch 5 from slipping when being pressed.
[0033] The above description is only a preferred embodiment of the present utility model, so all equivalent changes or modifications made according to the structure, features and principles described in the scope of the present utility model patent application are included in the scope of the present utility model patent application.
Claims
1. A heel blood sampling device, comprising a housing (1) and a blood sampling assembly (3) located in the housing (1), the blood sampling assembly (3) comprising a blade (6), a blade holder (7) and a toggle switch (5), characterized in that: The blood sampling assembly (3) further comprises a slider (8) and a compression spring (9); the blade (6) is located at one end of the blade holder (7); an end of the blade holder (7) away from the blade (6) is rotatably connected to the slider (8); the inner side wall of the housing (1) comprises a first track (11) for the slider (8) to slide; the compression spring (9) drives the slider (8) to move from one end of the first track (11) to the other end; the inner side wall of the housing (1) comprises a second track (16) for the blade holder (7) to slide; the first track (11) and the second track (16) are connected to each other. An angle is formed, the side wall of the shell (1) has a knife outlet (18), the second track (16) is located between the first track (11) and the knife outlet (18), when the compression spring (9) drives the slider (8) to move from one end of the first track (11) to the other end, and at the same time the knife holder (7) slides in the second track (16), the toggle switch (5) is rotatably connected to the shell (1), when the toggle switch (5) is in a locked state, one end of the toggle switch (5) abuts against the slider (8), and the compression spring (9) is in a compressed state.
2. A heel blood sampling device according to claim 1, characterized in that: The first track (11) is arranged vertically along the inner side wall of the shell (1), and the second track (16) is arranged obliquely upward from one end close to the first track (11) to the other end close to the knife outlet (18).
3. A heel blood sampling device according to claim 1, characterized in that: A third track (12) is provided in the housing (1), and the third track (12) can be used to place the compression spring (9), and the expansion and contraction direction of the compression spring (9) is consistent with the length direction of the third track (12).
4. A heel blood sampling device according to claim 1, characterized in that: The toggle switch (5) is provided with a first safety piece (19) at one end close to the slider (8); when the toggle switch (5) is in a locked state, the first safety piece (19) is stuck in the side wall of the first track (11), and the first safety piece (19) is abutted against the slider (8).
5. The heel blood sampling device according to claim 1, characterized in that: A second safety piece (20) is provided on the side wall of the toggle switch (5), a blocking plate (21) is provided on the inner side wall of the housing (1), and the side wall of the second safety piece (20) abuts against the side wall of the blocking plate (21).
6. A heel blood sampling device according to claim 1, characterized in that: The side wall of the housing (1) is provided with an installation opening (22), the installation opening (22) is for receiving the compression spring (9), and a cover plate (23) is clamped and fixed in the installation opening (22).
7. A heel blood sampling device according to claim 1, characterized in that The toggle switch (5) is provided with a plurality of anti-slip strips (24) on a side wall at an end away from the slider (8).