Anti-stabbing syringe
By designing structures such as hinge seats, lockers and torsion springs on the syringe, the automatic backing and position fixing of the needle cap is solved, and the problem of difficulty in backing the syringe and risk of hand stabbing is improved, and the convenience and safety of operation are improved.
Patent Information
- Application Number
- CN202420576925.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-03-25
- Publication Date
- 2025-02-28
- Estimated Expiration
- 2034-03-25
AI Technical Summary
Existing syringes are difficult and time-consuming when returning to the trocar cap, which leads to dangerous two-hand operations often, which easily leads to the risk of hand stabbing.
A puncture-proof syringe is designed. By setting up structures such as a hinge seat, a locker and a torsion spring on the needle cap, the automatic backing and position fixing of the needle cap is achieved, avoiding the danger of manual backing.
It improves the convenience and safety of needle cap backing, reduces the risk of hand injuries for medical staff, and makes backing easier and faster.
Smart Images
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Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field of medical equipment, and in particular relates to a stab-proof syringe. Background Art
[0002] The syringe is a very common medical device, including a needle, a syringe, a piston, a piston rod, a needle cap and other structures, wherein the needle cap is put on the needle to avoid needle contamination and puncture wounds. At present, the needle cap needs to be removed when the syringe is used clinically, and the needle cap needs to be put back on the needle after use to prevent the needle from being exposed and causing the risk of puncture wounds to doctors and patients. Although the conventional operation of returning the needle cap is the one-handed return method, that is, the return is completed by holding the syringe with one hand without holding the needle cap, since this return method is difficult and time-consuming, medical staff often use a more convenient way to complete the return, that is, the return operation with one hand holding the needle and the other hand holding the needle cap. However, this return method is relatively simple, and if the operation is improper, the hand holding the needle cap is prone to a greater risk of puncture wounds, causing harm to medical staff. Utility Model Content
[0003] In view of the above problems, the purpose of the present utility model is to provide a stab-proof syringe to solve the problems raised in the above background technology.
[0004] To achieve the above purpose, the technical solution adopted by the utility model is: an anti-stab syringe, including a barrel, a piston is arranged at the inner end of the barrel, and the piston is connected to the push handle through a push rod, a needle seat, a scale line, a hinge seat and a first clamping seat are arranged on the barrel, a needle is arranged on the needle seat, the hinge seat is hinged to a hinge block arranged on the needle cap, and a torsion spring is arranged at the hinge, a second clamping seat is also arranged on the needle cap, and the clamping block set on the second clamping seat is clamped and connected with the clamping hole opened on the first clamping seat, a movable groove 1 is opened inside the needle cap, a movable groove 2 and an opening are opened on the needle cap, a baffle is movably arranged in the movable groove 1, and a pull block is arranged on the baffle.
[0005] The beneficial effects of the utility model are as follows: after the baffle is moved to open the opening, the needle cap can be rotated to make the clamping block clamped in the clamping hole to fix the position of the needle cap, so as to expose the needle tip for the patient to perform injection operation; after the injection is completed, the clamping block and the clamping hole are separated, and the needle cap can be rotated and reset under the action of the torsion spring to complete the re-sheathing, thereby increasing the convenience of re-sheathing and avoiding injuries to the hands of medical staff during re-sheathing, which puts the medical staff at risk of needle stick injuries.
[0006] To remove the needle cap and expose the needle:
[0007] As a further improvement of the above technical solution: the needle seat is arranged at the outer end of the nipple at the other end of the barrel away from the push handle, and the hinge seat is located at the edge of the barrel on one side of the needle seat, and is hinged to the hinge block arranged on the outer wall of the needle cap near the needle seat end.
[0008] The beneficial effect of this improvement is that the hinge seat is hinged with the hinge block, and when the opening of the needle cap is opened, the needle cap only needs to be rotated toward the hinge end to expose the needle, so that medical staff can use the needle for puncture operations.
[0009] To facilitate needle insertion and removal:
[0010] As a further improvement of the above technical solution: the opening is opened along the length direction of the needle cap at the other side of the needle cap away from the end surface where the hinge block is arranged.
[0011] The beneficial effect of this improvement is that, by providing the opening on the needle cap, it is possible to facilitate the insertion and removal of the needle with the rotation of the needle cap after the needle cap is opened.
[0012] In order to facilitate the accommodation and displacement of the baffle and the pull block:
[0013] As a further improvement of the above technical solution: the movable groove 2 is horizontally located at the outer end of the needle cap on one side of the middle part of the opening, and the side end of the opening is connected with the movable groove 1 and the movable groove 2, while the inner end of the movable groove 2 is the movable groove 1 and is connected with the movable groove 1.
[0014] The beneficial effect of this improvement is that the baffle can be easily accommodated and displaced by opening the first movable groove, and the pull block can be easily accommodated and displaced by setting up the second movable groove.
[0015] In order to facilitate the movement of the baffle to open and close the opening:
[0016] As a further improvement of the above technical solution: the pulling block passes through the second moving groove and is connected to the baffle located in the first moving groove.
[0017] The beneficial effect of this improvement is that by setting up the pull block, it is convenient to pinch the pull block to drive the baffle to move in the movable groove. When one end of the baffle is located at the opening, the opening can be closed to prevent the exposed opening from contaminating the needle. When the baffle is moved in the opposite direction, the opening can be opened to facilitate the insertion and exit of the needle.
[0018] In order to facilitate the position fixation of the needle cap in the rotated and unfolded state:
[0019] As a further improvement of the above technical solution: the second holder is arranged at the other end of the needle cap away from the hinge block, and the setting end face of the second holder is the same as the setting end face of the hinge seat, and is engaged and connected with the first holder arranged on the same end face of the barrel.
[0020] The beneficial effect of this improvement is as follows: by rotating the needle cap to expose the needle tip, the second holder is inserted into the first holder, and the block provided on the second holder is inserted into the slot of the first holder, the needle cap can be fixed in position so that when medical staff perform the puncture operation, it will not rotate to affect the puncture; when the needle cap is pulled outward to separate the block from the hole and the second holder from the first holder, the needle cap can automatically move back and reset under the action of the torsion spring to complete the re-sheathing operation.
[0021] To facilitate reading the liquid volume at the inner end of the barrel:
[0022] As a further improvement of the above technical solution: the scale lines are arranged on the outer wall of the barrel along the length direction of the barrel, and the barrel is transparent.
[0023] The beneficial effect of this improvement is that by setting up the scale lines, it is convenient for medical personnel to read the volume of the liquid medicine at the inner end of the barrel. BRIEF DESCRIPTION OF THE DRAWINGS
[0024] Figure 1 It is the front view of the utility model;
[0025] Figure 2 This is a schematic diagram of the opening structure of the utility model;
[0026] Figure 3 It is a schematic diagram of the internal structure of the utility model;
[0027] Figure 4 This is a schematic diagram of the needle cap rotation structure of the utility model;
[0028] Figure 5 For the utility model Figure 1 A partial enlarged view;
[0029] In the figure: 1. barrel; 2. piston; 3. push rod; 4. push handle; 5. needle seat; 6. graduation mark; 7. hinge seat; 8. first clamping seat; 9. needle; 10. needle cap; 11. hinge block; 12. second clamping seat; 13. clamping block; 14. clamping hole; 15. movable slot 1; 16. movable slot 2; 17. opening; 18. baffle; 19. pull block. DETAILED DESCRIPTION
[0030] In order to enable those skilled in the art to better understand the technical solution of the utility model, the utility model is described in detail below in conjunction with the accompanying drawings. The description in this part is only exemplary and explanatory and should not have any limiting effect on the protection scope of the utility model.
[0031] like Figure 1-5As shown, a stab-proof syringe comprises a barrel 1, a piston 2 is arranged at the inner end of the barrel 1, and the piston 2 is connected to the push handle 4 through a push rod 3, a needle seat 5, a scale line 6, a hinge seat 7 and a first clamping seat 8 are arranged on the barrel 1, a needle 9 is arranged on the needle seat 5, the hinge seat 7 is hinged with a hinge block 11 arranged on a needle cap 10, and a torsion spring is arranged at the hinge, a second clamping seat 12 is further arranged on the needle cap 10, and a clamping block 13 set on the second clamping seat 12 is clamped and connected with a clamping hole 14 provided on the first clamping seat 8, a movable groove 15 is arranged inside the needle cap 10, a movable groove 2 16 and an opening 17 are arranged on the needle cap 10, a baffle 18 is movably arranged in the movable groove 15, and a baffle 18 is arranged on the baffle 18 A pull block 19 is provided. After the opening 17 is opened by moving the baffle 18, the needle cap 10 can be rotated to make the clamping block 13 clamped in the clamping hole 14 to fix the position of the needle cap 10, so as to expose the needle 9 for the patient to perform the injection operation. After the injection is completed, the clamping block 13 and the clamping hole 14 are separated, and the needle cap 10 can be rotated and reset under the action of the torsion spring to complete the return. This can not only increase the convenience of the return, but also avoid the risk of injury to the hands of medical staff during the return, so that the hands of medical staff are at risk of needle stick injuries. The needle seat 5 is arranged at the outer end of the nipple of the other end of the barrel 1 away from the push handle 4, and the hinge seat 7 is located at the edge of the barrel 1 on one side of the needle seat 5, and is hinged to the hinge block 11 arranged on the outer wall of the needle cap 10 near the needle seat 5, and is hinged to the hinge block 11 through the hinge seat 7 When the opening 17 of the needle cap 10 is opened, the needle 9 can be exposed by rotating the needle cap 10 toward the hinge end, so that the medical staff can use the needle 9 to perform puncture operations. The opening 17 is opened along the length direction of the needle cap 10 at the other side of the needle cap 10 away from the end face where the hinge block 11 is set. The opening 17 on the needle cap 10 can facilitate the insertion and exit of the needle 9 with the rotation of the needle cap 10 after it is opened. The movable groove 16 is horizontally located at the outer end of the needle cap 10 on one side of the middle part of the opening 17, and the side end of the opening 17 is connected to the movable groove 15 and the movable groove 16, and the inner end of the movable groove 16 is the movable groove 15, and is connected to the movable groove 15. The opening of the movable groove 15 can facilitate the accommodation and displacement of the baffle 18. , through the establishment of the second movable groove 16, it is convenient to accommodate and move the pull block 19. The pull block 19 passes through the second movable groove 16 and is connected to the baffle 18 located in the first movable groove 15. Through the establishment of the pull block 19, it is convenient to pinch the pull block 19 to drive the baffle 18 to move in the movable groove 15. When one end of the baffle 18 is located at the opening 17, the opening 17 can be closed to prevent the opening 17 from being exposed and causing contamination to the needle 9. When the baffle 18 is moved in the reverse direction, the opening 17 can be opened to facilitate the insertion and exit of the needle 9. The second clamping seat 12 is arranged at the other end of the needle cap 10 away from the hinge block 11, and the setting end face of the second clamping seat 12 is the same as the setting end face of the hinge seat 7, and is engaged and connected with the first clamping seat 8 arranged on the same end face of the barrel 1.By rotating the needle cap 10 to expose the needle 9, the second holder 12 is inserted into the first holder 8, and the block 13 set on the second holder 12 is inserted into the slot of the first holder 8, the needle cap 10 can be fixed in position so that when the medical staff performs the puncture operation, the puncture will not be affected by the rotation. When the needle cap 10 is pulled outward to separate the block 13 from the hole 14 and the second holder 12 from the first holder 8, the needle cap 10 can automatically move back and reset under the force of the torsion spring to complete the re-sheathing operation. The scale line 6 is set on the outer wall of the barrel 1 along the length direction, and the barrel 1 is transparent. The scale line 6 can be set to facilitate medical staff to read the liquid volume at the inner end of the barrel 1.
[0032] The working principle of the utility model is as follows: when an injection operation is required, the pull block 19 only needs to be pinched and held along the movable groove 16 to drive the baffle 18 in the movable groove 15 to move and open the opening 17, and then the needle cap 10 can be rotated to unfold, so that the needle 9 passes through the opening 17 and is exposed to the outside world. When the needle cap 10 is parallel to the barrel body 1 under rotation, the second clamping seat 12 is clamped in the first clamping seat 8, and the clamping block 13 is clamped in the clamping hole 14, and the needle cap 10 can be fixed in position. When the medical staff uses the needle 9 to perform the puncture operation, the needle cap 10 is not easy to move and affect the puncture process. When the treatment operation is completed and the sheath is returned, it is only necessary to pull the needle cap 10 outward to separate the clamping block 13 from the clamping hole 14 and the second clamping seat 12 from the first clamping seat 8. Then, the needle cap 10 can automatically move back and reset under the action of the torsion spring to complete the sheath return operation. The sheath return operation is simple and convenient, and is not easy to cause damage to the hands of the medical staff, so that there is a risk of needlestick injury to their hands.
[0033] It should be noted that, in this article, the terms "comprises", "includes" or any other variations thereof are intended to cover non-exclusive inclusion, so that a process, method, article or apparatus that includes a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or apparatus.
[0034] This article uses specific examples to illustrate the principles and implementation methods of the utility model. The above examples are only used to help understand the method and core ideas of the utility model. The above is only the preferred implementation method of the utility model. It should be pointed out that due to the limitations of textual expression, there are objectively infinite specific structures. For ordinary technicians in this technical field, without departing from the principle of the utility model, they can make several improvements, embellishments or changes, and can also combine the above technical features in an appropriate manner; these improvements, embellishments, changes or combinations, or the direct application of the concept and technical solution of the utility model to other occasions without improvement, should be regarded as the protection scope of the utility model.
Claims
1. A stab-proof syringe, comprising a barrel (1), wherein a piston (2) is disposed at the inner end of the barrel (1), and the piston (2) is connected to a push handle (4) via a push rod (3), characterized in that: The barrel (1) is provided with a needle seat (5), a scale line (6), a hinge seat (7) and a first clamping seat (8); the needle seat (5) is provided with a needle head (9); the hinge seat (7) is hingedly connected to a hinge block (11) provided on a needle cap (10), and a torsion spring is provided at the hinge; the needle cap (10) is also provided with a second clamping seat (12), and a clamping block (13) provided on the second clamping seat (12) is clamped and connected with a clamping hole (14) provided on the first clamping seat (8); a movable groove (15) is provided inside the needle cap (10); a movable groove (2) (16) and an opening (17) are provided on the needle cap (10); a baffle (18) is movably provided in the movable groove (15), and a pull block (19) is provided on the baffle (18).
2. The stab-proof syringe according to claim 1, characterized in that: The needle seat (5) is arranged at the outer end of the nipple of the other end of the barrel (1) away from the push handle (4), and the hinge seat (7) is located at the edge of the barrel (1) on one side of the needle seat (5) and is hinged to the hinge block (11) arranged on the outer wall of the needle cap (10) near the needle seat (5).
3. The stab-proof syringe according to claim 1, characterized in that: The opening (17) is opened along the length direction of the needle cap (10) at the other side of the needle cap (10) away from the end surface where the hinge block (11) is arranged.
4. The stab-proof syringe according to claim 1, characterized in that: The second movable groove (16) is horizontally located at the outer end of the needle cap (10) on one side of the middle of the opening (17), and the side end of the opening (17) is connected to the first movable groove (15) and the second movable groove (16), while the inner end of the second movable groove (16) is the first movable groove (15) and is connected to the first movable groove (15).
5. The stab-proof syringe according to claim 1, characterized in that: The pulling block (19) passes through the second moving groove (16) and is connected to the baffle (18) located in the first moving groove (15).
6. The stab-proof syringe according to claim 1, characterized in that: The second clamping seat (12) is arranged at the other end of the needle cap (10) away from the hinge block (11), and the setting end surface of the second clamping seat (12) is the same as the setting end surface of the hinge seat (7), and is engaged and connected with the first clamping seat (8) arranged on the same end surface of the barrel (1).
7. The stab-proof syringe according to claim 1, characterized in that: The scale lines (6) are arranged on the outer wall of the barrel (1) along the length direction thereof, and the barrel (1) is transparent.