Telescopic needle cap of artery blood taking needle
By designing the retractable needle cap of the arterial blood collection needle, the interface, moving groove and push rod mechanism is used to realize the telescopic function of the needle cap, which solves the risk of needle stab injury during the sleeve retraction process and improves the safety of medical staff.
Patent Information
- Application Number
- CN202421785897.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-07-25
- Publication Date
- 2025-06-10
- Estimated Expiration
- 2034-07-25
AI Technical Summary
After the arterial blood collection operation is completed, the needle cap and arterial blood collection needle are prone to risk of needle injury when returning to the condom, which affects the safety of medical staff.
A retractable needle cap of an arterial blood collection needle is designed. By setting an interface and a moving groove in the needle seat, combining the rotating adjustment seat and push rod mechanism, the telescopic function of the needle cap is realized, ensuring the safe connection between the needle cap and the needle body during the sleeve retraction process.
Through the telescopic function of the needle cap, the safety of the sleeve retraction process is improved, the risk of needle stab injuries is avoided, and the safety of medical staff is ensured.
Smart Images
Figure CN222955433U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field of medical devices, and particularly relates to a retractable needle cap for an arterial blood collection needle. Background Technique
[0002] An arterial blood collection needle is an important tool for collecting arterial blood samples during medical examinations, and it plays a key role in clinical diagnosis and treatment.
[0003] Currently, after the operation of the arterial blood collection needle is completed, the needle cap needs to be put on immediately, otherwise it will affect the results of arterial blood gas. However, when the medical staff holds the needle cap to put it on, the needle cap and the arterial blood collection needle are put on in opposite directions, which makes it easy to have the risk of needle stick injury during the process of putting on the cap, causing harm to the medical staff.
[0004] Therefore, how to provide a device that can prevent needle stick injury during the process of putting on the cap between the needle cap and the arterial blood collection needle is a technical problem that needs to be solved urgently in this field. Content of the Utility Model
[0005] Aiming at the above problems, the purpose of the utility model is to provide a retractable needle cap for an arterial blood collection needle to solve the problems raised in the above background technique.
[0006] To achieve the above purpose, the technical solution adopted by the utility model is: a retractable needle cap for an arterial blood collection needle, an interface and a first moving groove are opened in the needle seat, and the interface is in fit connection with the nipple end of the arterial blood collection needle barrel. A needle body and a rotation adjustment seat are arranged on the needle seat. A needle cap is arranged in the first moving groove, and the first moving groove is movably connected with the needle cap. The inner wall of the rotation adjustment seat is provided with internal threads, and the outer wall of the needle cap is provided with external threads, and the internal threads of the rotation adjustment seat are adapted to the external threads of the needle cap. A needle hole is opened on the needle cap, and a second moving groove is arranged inside the needle cap. A baffle and a push rod are movably arranged in the second moving groove, and the push rod is connected with a push handle.
[0007] Optionally, the rotation adjustment seat is arranged on the outer circle of the top end of the needle seat, and the rotation adjustment seat is rotatably connected with the needle seat.
[0008] Optionally, the first moving groove is in the needle seat inside the rotation adjustment seat, and the lower end of the needle cap penetrates through the top end of the needle seat and is located in the first moving groove.
[0009] Optionally, the needle body is vertically arranged in the middle of the top end of the needle seat, and a needle hole for facilitating the penetration of the needle body is opened in the middle of the top end of the needle cap.
[0010] Optionally, the second moving groove is horizontally opened inside the upper end of the needle cap, and the second moving groove is communicated with the needle hole.
[0011] Optionally, one end of the push rod is connected to one end of the baffle, and the other end of the push rod horizontally penetrates through the needle cap and is connected to the push handle located outside.
[0012] Optionally, a silicone rubber sheet is provided on the baffle, and the silicone rubber sheet is wrapped around the outer wall of the baffle.
[0013] Optionally, there is a first protrusion between the needle base and the first moving groove, and there is a second protrusion at the bottom end of the needle cap that is adapted to the first protrusion.
[0014] Optionally, the length of the baffle is greater than the diameter of the needle hole.
[0015] Optionally, the needle body is an arterial blood sampling needle.
[0016] Beneficial effects:
[0017] A retractable needle cap for an arterial blood sampling needle includes a needle base. An interface and a first moving groove are provided in the needle base, and the interface is in mating connection with the nipple end of the arterial blood sampling needle cylinder. A needle body and a rotation adjustment seat are provided on the needle base, and the needle body is an arterial blood sampling needle. A needle cap is provided in the first moving groove, and the first moving groove is movably connected to the needle cap. The inner wall of the rotation adjustment seat is provided with internal threads, and the outer wall of the needle cap is provided with external threads, and the internal threads of the rotation adjustment seat are adapted to the external threads of the needle cap. A needle hole is provided on the needle cap, and a second moving groove is provided inside it. A baffle is movably provided in the second moving groove, and a silicone rubber sheet and a push rod are provided on the baffle. The push rod is connected to the push handle. Since the needle cap has a telescopic function, it can improve the safety of putting the needle cap back on when medical staff put the needle cap back on, and avoid the danger of needle stick injury caused by putting the needle cap back on in a way that the needle cap and the needle body are opposite to each other, causing harm to medical staff. Description of the drawings
[0018] Figure 1 is the front view of the present invention;
[0019] Figure 2 is the external structural schematic diagram of the needle cap putting-back of the present invention;
[0020] Figure 3 is the internal structural schematic diagram of the present invention;
[0021] Figure 4 is the internal structural schematic diagram of the needle cap putting-back of the present invention;
[0022] Figure 5 is of the present invention Figure 3 partial enlarged view at A;
[0023] In the figure: 1. Needle holder; 2. Interface; 3. First moving groove; 4. Needle body; 5. Rotating adjustment seat; 6. Needle cap; 7. Needle hole; 8. Second moving groove; 9. Baffle; 10. Silicone rubber sheet; 11. Push rod; 12. Push handle. Detailed implementation mode
[0024] In order to enable those skilled in the art to better understand the technical solution of the present utility model, the present utility model will be described in detail below with reference to the accompanying drawings. The description in this part is only exemplary and explanatory, and should not have any restrictive effect on the protection scope of the present utility model.
[0025] As shown in Figures 1-5 the figure, a retractable needle cap for an arterial blood collection needle. An interface 2 and a first moving groove 3 are provided in the needle holder 1, and the interface 2 is in mating connection with the nipple end of the arterial blood collection needle barrel. A needle body 4 and a rotating adjustment seat 5 are provided on the needle holder 1. A needle cap 6 is provided in the first moving groove 3, and the first moving groove 3 is movably connected to the needle cap 6. The inner wall of the rotating adjustment seat 5 is provided with internal threads, and the outer wall of the needle cap 6 is provided with external threads, and the internal threads of the rotating adjustment seat 5 are adapted to the external threads of the needle cap 6. A needle hole 7 is provided on the needle cap 6, and a second moving groove 8 is provided inside the needle cap 6. A baffle 9 and a push rod 11 are movably provided in the second moving groove 8, and the push rod 11 is connected to a push handle 12.
[0026] Specifically, a retractable needle cap for an arterial blood collection needle includes a needle holder 1. An interface 2 and a first moving groove 3 are provided in the needle holder 1, and the interface 2 is in mating connection with the nipple end of the arterial blood collection needle barrel. A needle body 4 and a rotating adjustment seat 5 are provided on the needle holder 1, and the needle body 4 is an arterial blood collection needle. A needle cap 6 is provided in the first moving groove 3, and the first moving groove 3 is movably connected to the needle cap 6. The inner wall of the rotating adjustment seat 5 is provided with internal threads, and the outer wall of the needle cap 6 is provided with external threads, and the internal threads of the rotating adjustment seat 5 are adapted to the external threads of the needle cap 6. A needle hole 7 is provided on the needle cap 6, and a second moving groove 8 is provided inside it. A baffle 9 is movably provided in the second moving groove 8, and a silicone rubber sheet 10 and a push rod 11 are provided on the baffle 9. The push rod 11 is connected to a push handle 12. By having a retractable function of the needle cap 6, the safety of putting the cap back can be improved when medical staff put the needle cap 6 back, avoiding the risk of needle stick injury caused by the method of putting the needle cap 6 back relative to the needle body 4, and causing harm to medical staff.
[0027] In order to facilitate rotating the rotating adjustment seat to adjust the retraction and extension of the needle cap:
[0028] As a further improvement of the above technical solution: The rotating adjustment seat 5 is arranged on the outer circle of the top end of the needle holder 1, and the rotating adjustment seat 5 is rotatably connected to the needle holder 1.
[0029] The beneficial effects of this improvement are as follows: Since the rotating adjustment seat is rotatably connected to the needle seat, it is convenient for medical staff to rotate the rotating adjustment seat to perform telescopic adjustment on the needle cap.
[0030] For facilitating the accommodation of the needle cap and restricting the telescopic distance of the needle cap:
[0031] As a further improvement of the above technical solution: The first moving groove 3 is located in the needle seat 1 inside the rotating adjustment seat 5, and the lower end of the needle cap 6 penetrates through the top end of the needle seat 1 and is located in the first moving groove 3.
[0032] The beneficial effects of this improvement are as follows: Through the establishment of the first moving groove, it is not only convenient for the accommodation of the needle cap but also capable of restricting the telescopic distance of the needle cap.
[0033] For facilitating arterial puncture blood collection and the penetration of the needle body:
[0034] As a further improvement of the above technical solution: The needle body 4 is vertically arranged at the middle position of the top end of the needle seat 1, and the needle hole 7 facilitating the penetration of the needle body 4 is opened at the middle position of the top end of the needle cap 6.
[0035] The beneficial effects of this improvement are as follows: Through the establishment of the needle body, it is convenient to perform arterial puncture blood collection. Through the opening of the needle hole at the middle of the top end of the needle cap, when the needle cap performs telescopic movement, it is convenient for the penetration of the needle body.
[0036] For facilitating the opening and closing of the needle hole:
[0037] As a further improvement of the above technical solution: The second moving groove 8 is horizontally opened inside the upper end of the needle cap 6, and the second moving groove 8 communicates with the needle hole 7. The beneficial effects of this improvement are as follows: Through the communication between the second moving groove and the needle hole, the opening or closing operation of the needle hole can be performed through the displacement of the baffle.
[0038] For facilitating the displacement of the baffle:
[0039] As a further improvement of the above technical solution: One end of the push rod 11 is connected to one end of the baffle 9, and the other end of the push rod 11 horizontally penetrates through the needle cap 6 and is connected to the push handle 12 located outside.
[0040] The beneficial effects of this improvement are as follows: After the needle cap extends upward to complete the operation of putting the cap back on and wraps the needle body, only by pressing the push handle, the push handle can push the baffle to move inward through the push rod to close the needle hole. Similarly, when operating in the reverse direction and pulling the push handle to drive the baffle to move outward through the push rod, the needle hole can be opened so as to retract the needle cap into the first moving groove and expose the needle body for arterial puncture blood collection.
[0041] For facilitating the prevention of the baffle moving automatically without manual operation:
[0042] As a further improvement of the above technical solution: a silicone rubber sheet is provided on the baffle, and the silicone rubber sheet 10 is wrapped around the outer wall of the baffle 9.
[0043] The beneficial effect of this improvement is that by wrapping the silicone rubber sheet on the outer wall of the baffle, the friction coefficient can be increased and the resistance can be increased, so that the baffle is not easy to move by itself to open and close the pinhole without manual operation, affecting the sealing performance.
[0044] To facilitate preventing the needle cap from detaching from the needle base:
[0045] As a further improvement of the above technical solution: there is a first protrusion between the needle base 1 and the first moving groove 3, and there is a second protrusion at the bottom end of the needle cap 6 that is adapted to the first protrusion.
[0046] The beneficial effect of this improvement is that the needle cap is ensured not to detach from the needle base by the existence of the first protrusion between the needle base and the first moving groove and the existence of the second protrusion at the bottom end of the needle cap that is adapted to the first protrusion.
[0047] To facilitate preventing the baffle from being unable to block the pinhole:
[0048] As a further improvement of the above technical solution: the length of the baffle 9 is greater than the diameter of the pinhole 7.
[0049] The beneficial effect of this improvement is that the baffle can block the pinhole by the length of the baffle 9 being greater than the diameter of the pinhole 7.
[0050] The working principle of the present utility model is as follows: when the rotation adjustment seat 5 is rotated, the rotation adjustment seat 5 can drive the needle cap 6 to perform telescopic movement in the first moving groove 3 under the cooperation of its internal thread and the external thread of the needle cap 6. When the push handle 12 is pulled to drive the baffle 9 to move outward through the push rod 11, the pinhole 7 can be opened, so that after the needle cap 6 moves down and contracts into the first moving groove 3, the needle body 4 is exposed for arterial puncture blood collection. On the contrary, driving the needle cap 6 to move up and extend to complete the backsheathing. After wrapping the needle body 4, the push handle 12 is pressed, so that the push handle 12 drives the baffle 9 to move inward through the push rod 11, and then the pinhole 7 can be closed, and the inner end of the needle cap 6 is in a closed state to protect the needle body 4. By wrapping the silicone rubber sheet 10 on the outer wall of the baffle 9, the friction coefficient can be increased and the resistance can be increased, so that the baffle 9 is not easy to move by itself to open and close the pinhole 7 without manual operation, affecting the sealing performance.
[0051] It should be noted that in this text, the terms "including", "comprising" or any other variants thereof are intended to cover non-exclusive inclusion, such that a process, method, article or device comprising a series of elements not only includes those elements, but also includes other elements not explicitly listed, or further includes elements inherent to such process, method, article or device. Specific examples are used in this text to elaborate on the principles and implementation modes of the present utility model. The description of the above examples is only used to help understand the method and its core idea of the present utility model. The above is only the preferred implementation mode of the present utility model. It should be pointed out that due to the limitation of literal expression, objectively there are infinite specific structures. For those of ordinary skill in the art in this technical field, without departing from the principle of the present utility model, several improvements, refinements or changes can be made, or the above technical features can be combined in an appropriate manner; these improvements, refinements, changes or combinations, or directly applying the concept and technical solution of the present utility model to other occasions without improvement, shall all be regarded as the protection scope of the present utility model.
Claims
1. A retractable needle cap for an arterial blood collection needle, characterized in that: The invention comprises a needle seat (1), wherein an interface (2) and a movable groove (3) are provided in the needle seat (1), and the interface (2) is matched with the nipple end of the arterial blood sampling needle, the needle seat (1) is provided with a needle body (4) and a rotating adjustment seat (5), the movable groove (3) is provided with a needle cap (6), and the movable groove (3) and the needle cap (6) are movably connected, the inner wall of the rotating adjustment seat (5) is provided with an internal thread, and the outer wall of the needle cap (6) is provided with an external thread, and the internal thread of the rotating adjustment seat (5) is matched with the external thread of the needle cap (6), the needle cap (6) is provided with a needle hole (7), and the interior of the needle cap (6) is provided with a movable groove (8), and a baffle (9) and a push rod (11) are movably provided in the movable groove (8), and the push rod (11) is connected to a push handle (12).
2. The retractable needle cap of an arterial blood collection needle according to claim 1, characterized in that: The rotating adjustment seat (5) is arranged on the outer ring of the top end of the needle seat (1), and the rotating adjustment seat (5) is rotatably connected to the needle seat (1).
3. The retractable needle cap of an arterial blood collection needle according to claim 2, characterized in that: The movable groove one (3) is located in the needle seat (1) inside the rotating adjustment seat (5), and the lower end of the needle cap (6) passes through the top end of the needle seat (1) and is located in the movable groove one (3).
4. The retractable needle cap of an arterial blood collection needle according to claim 3, characterized in that: The needle body (4) is vertically arranged at the middle position of the top end of the needle seat (1), and the needle hole (7) for facilitating the penetration of the needle body (4) is opened at the middle position of the top end of the needle cap (6).
5. The retractable needle cap of an arterial blood collection needle according to claim 4, characterized in that: The second movable groove (8) is horizontally opened inside the upper end of the needle cap (6), and the second movable groove (8) is connected to the needle hole (7).
6. The retractable needle cap of an arterial blood collection needle according to claim 5, characterized in that: One end of the push rod (11) is connected to one end of the baffle (9), while the other end of the push rod (11) horizontally penetrates the needle cap (6) and is connected to the push handle (12) located outside.
7. The retractable needle cap of an arterial blood collection needle according to claim 6, characterized in that: A silicon rubber sheet is arranged on the baffle plate (9), and the silicon rubber sheet (10) is wrapped and arranged on the outer wall of the baffle plate (9).
8. The retractable needle cap of an arterial blood collection needle according to claim 7, characterized in that: A protrusion 1 is provided between the needle seat (1) and the movable groove 1 (3), and a protrusion 2 matching the protrusion 1 is provided at the bottom end of the needle cap (6).
9. The retractable needle cap of an arterial blood collection needle according to claim 8, characterized in that: The length of the baffle (9) is greater than the diameter of the needle hole (7).
10. The retractable needle cap of an arterial blood collection needle according to claim 9, characterized in that: The needle body (4) is an arterial blood collection needle.