Connecting structure for biopsy needle
By designing a biopsy needle connection structure including an outer barrel needle, an inner needle, an elastic moving structure and an operating shell, the waste problem caused by the difficulty of disassembling the biopsy needle in the prior art is solved, and the reuse of the operating part and the automatic reset of the inner needle are realized.
Patent Information
- Application Number
- CN202420579635.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-03-25
- Publication Date
- 2025-03-11
- Estimated Expiration
- 2034-03-25
AI Technical Summary
The connecting structure of the existing biopsy needle is difficult to disassemble, resulting in the need to discard the entire biopsy part after use, resulting in waste.
A connecting structure including an outer barrel needle, an inner needle, an elastic moving structure and an operating shell is designed. By setting a dovetail groove and a dovetail block, combined with an elastic moving structure, the removal and reuse of the biopsy needle and the operating shell are realized.
It effectively reduces material waste, realizes reuse of the operating part, and pushes the inner needle to reset through the elastic force of the spring to avoid sliding and falling off.
Smart Images
Figure CN222584548U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field of medical instruments, in particular to a connection structure for a biopsy needle. Background Art
[0002] A biopsy needle is a medical device used to penetrate the human body to reach the lesion and perform puncture sampling. It is a disposable medical device. However, since the control part and the biopsy needle are generally fixedly connected and difficult to disassemble, the entire set of biopsy parts needs to be discarded after the biopsy needle is used, causing a great waste. Therefore, it is of great significance to study a connection structure for a biopsy needle to solve the above problem. Utility Model Content
[0003] In order to overcome the above defects, the utility model provides a connection structure for a biopsy needle, which solves the problem that the control part and the biopsy needle are generally fixedly connected and difficult to disassemble, so that the entire set of biopsy parts needs to be discarded after the biopsy needle is used, causing great waste.
[0004] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a connection structure for a biopsy needle, comprising an outer tube needle, an inner needle is built in the outer tube needle, two first dovetail grooves are opened at one end of the inner needle, the two first dovetail grooves are embedded with the elastic motion structure, and the elastic motion structure is arranged in an operating shell, and two second dovetail blocks are fixedly connected to one side of the operating shell, the two second dovetail blocks are respectively embedded with the two second dovetail grooves, the two second dovetail grooves are opened on the side plate, and the side plate is embedded and installed on the outside of the outer tube needle.
[0005] As a further solution of the utility model: handles are fixedly connected to both sides of the operating shell.
[0006] As a further solution of the utility model: the elastic motion structure includes a movable rod, which slides in the operating shell, penetrates the operating shell and extends into the outer tube needle, and one end of the movable rod is fixedly connected to the side wall of the operating shell with a spring.
[0007] As a further solution of the utility model: an opening is provided above the operating shell, an operating block is provided in the opening, and the operating block is fixedly connected above the movable rod.
[0008] As a further solution of the utility model: the movable rod is fixedly connected to one end away from the spring with two first dovetail blocks, and the two first dovetail blocks are embedded in the two first dovetail grooves.
[0009] As a further solution of the utility model: a side opening is provided on one side of the side plate and between the two first dovetail grooves, and the size of the side opening is adapted to the size of the first dovetail block.
[0010] Compared with the prior art, the beneficial effects of the utility model are:
[0011] 1. The connection structure for the biopsy needle is provided with a first dovetail block, a second dovetail block and an elastic motion structure. When disassembling, the elastic motion structure is first operated to drive the inner needle to remain flush with the side plate. At this time, the operating shell can be moved upward, so that the first dovetail block and the second dovetail block separate the first dovetail groove and the second dovetail groove respectively, so that the biopsy needle can be separated from the operating shell and removed, avoiding the operating part from being discarded together with the biopsy needle, thereby reducing material waste, and the operating part can be reused.
[0012] 2. The connection structure for the biopsy needle is provided with an outer tube needle and an inner needle, and the outer tube needle can cooperate with the tip of the inner needle to smoothly pierce the patient's affected area, and then the outer tube needle is extended through the inner needle, and the sampling port above the inner needle can embed the tissue therein, and then the inner needle is put into the outer tube needle to smoothly take out the sample to achieve the purpose of sampling.
[0013] 3. The connection structure for the biopsy needle is provided with a spring so that the elastic force of the spring can push the movable rod to reset, so that the movable rod pushes the inner needle to slide a certain distance on the outer tube needle. At this time, the movable rod penetrates the outer tube needle, and the inner needle is staggered from the opening of the outer tube needle, which plays a locking role and avoids the problem of the outer tube needle and the inner needle sliding off. BRIEF DESCRIPTION OF THE DRAWINGS
[0014] Figure 1 It is a three-dimensional structural schematic diagram of the utility model;
[0015] Figure 2 It is a three-dimensional structural diagram of the operating shell of the utility model;
[0016] Figure 3 This is a three-dimensional structural diagram of the outer tube needle of the utility model;
[0017] Figure 4 It is a schematic diagram of the three-dimensional cross-sectional structure of the outer tube needle of the utility model;
[0018] In the figure: 1 outer cylinder needle, 2 operating shell, 3 elastic motion structure, 31 spring, 32 operating block, 33 movable rod, 34 first dovetail block, 4 handle, 5 opening, 6 second dovetail block, 7 second dovetail groove, 8 side plate, 9 first dovetail groove, 10 inner needle. DETAILED DESCRIPTION
[0019] The technical solution of this patent is further described in detail below in conjunction with specific implementation methods.
[0020] like Figure 1-4As shown, the utility model provides a technical solution: a connection structure for a biopsy needle, comprising an outer tube needle 1, wherein the outer tube needle 1 has an inner needle 10 built therein. The outer tube needle 1 and the inner needle 10 are surgical devices for biopsy tissue sampling disclosed in the prior art. The outer tube needle 1 cooperates with the tip of the inner needle 10 to smoothly pierce the patient's affected area, and then the outer tube needle 1 is extended through the inner needle 10, so that the sampling port above the inner needle 10 can embed tissue therein, and then the inner needle 10 is put into the outer tube needle 1 to smoothly take out the sample to achieve the purpose of sampling.
[0021] One end of the inner needle 10 is provided with two first dovetail grooves 9, and the two first dovetail grooves 9 are engaged with the elastic motion structure 3, and the elastic motion structure 3 includes a movable rod 33, and the movable rod 33 slides in the operating shell 2, and the movable rod 33 penetrates the operating shell 2 and extends into the outer tube needle 1. One end of the movable rod 33 and the side wall of the operating shell 2 are fixedly connected with a spring 31. When the inner needle 10 is pushed out, the spring 31 is stretched, and when the inner needle 10 is retracted, the elastic force of the spring 31 can drive the movable rod 33 to reset. , so that the inner needle 10 can be smoothly received into the outer tube. Secondly, when the movable rod 33 retracts into the operating shell 2, the spring 31 is compressed and deformed, and the first dovetail block 34 and the second dovetail block 6 are respectively engaged with the first dovetail groove 9 and the second dovetail groove 7. At this time, the elastic force of the spring 31 can control the movable rod 33 to return to the left, so that the movable rod 33 penetrates into the outer tube needle 1, so that the movable rod 33 can prevent the second dovetail block 6 from escaping from the dovetail groove, which is beneficial to the connection between the operating shell 2 and the side plate 8.
[0022] An opening 5 is provided above the operating shell 2, and an operating block 32 is provided in the opening 5. The opening 5 can ensure smooth movement of the operating block 32. Secondly, the operating block 32 can provide a force application point for medical staff, facilitating the control operation of the medical staff.
[0023] The operating block 32 is fixedly connected to the top of the movable rod 33. The movable rod 33 is fixedly connected to one end away from the spring 31 with two first dovetail blocks 34. The two first dovetail blocks 34 are embedded in the two first dovetail grooves 9. The first dovetail blocks 34 and the first dovetail grooves 9 are engaged with each other, so that the first dovetail blocks 34 can be prevented from escaping from the first dovetail grooves 9 from the horizontal plane, thereby connecting the movable rod 33 with the inner needle 10, and facilitating the subsequent automatic collection of the inner needle 10 into the outer tube needle 1.
[0024] The elastic motion structure 3 is arranged in the operating shell 2, and handles 4 are fixedly connected to both sides of the operating shell 2. The handles 4 can provide operating points for medical staff to facilitate inserting the inner needle 10 into the patient's affected area.
[0025] Two second dovetail blocks 6 are fixedly connected to one side of the operating shell 2, and the two second dovetail blocks 6 are respectively engaged with the two second dovetail grooves 7. After the second dovetail blocks 6 and the second dovetail grooves 7 are slidably engaged, the connection between the operating shell 2 and the side panel 8 can be maintained, avoiding the problem of the operating shell 2 and the side panel 8 being separated front and back.
[0026] Two second dovetail grooves 7 are provided on the side plate 8, and the side plate 8 is embedded and installed on the outside of the outer tube needle 1. A side opening is provided on one side of the side plate 8 and located between the two first dovetail grooves 9, and the size of the side opening is adapted to the size of the first dovetail block 34. The design of the side opening can provide a movable space for the first dovetail block 34, so that the first dovetail block 34 can be smoothly taken out of the side opening, thereby facilitating the removal of the first dovetail block 34.
[0027] The working principle of the utility model is:
[0028] When sampling, the outer tube needle 1 cooperates with the tip of the inner needle 10 to pierce the patient's affected area, and then the operating block 32 can be used to drive the movable rod 33 to move, so that the spring 31 is deformed, so that the movable rod 33 pushes the inner needle 10 to continue to extend outward from the outer tube needle 1, so that the sampling port above the inner needle 10 extends, so that the inner needle 10 moves and can store tissue through the sampling port, and then the operating block 32 is released, so that the spring 31 drives the movable rod 33 to reset, so that the inner needle 10 is received in the outer tube needle 1, and can be pulled out to complete the sampling. When disassembling, the operating block 32 is pulled to drive the movable rod 33 to move, so that the inner needle 10 remains flush with the side plate 8, so that the first dovetail block 34 corresponds to the side port, and at this time, the operating shell 2 can be moved upward, so that the first dovetail block 34 and the second dovetail block 6 separate the first dovetail groove 9 and the second dovetail groove 7, and the first dovetail block 34 is upwardly disengaged from the side port, so that the outer tube needle 1 and the inner needle 10 are removed separately.
[0029] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood by specific circumstances.
[0030] The above describes in detail the preferred implementation of this patent, but this patent is not limited to the above implementation. Various changes can be made within the knowledge scope of ordinary technicians in this field without departing from the purpose of this patent.
Claims
1. A connection structure for a biopsy needle, comprising an outer tube needle (1), characterized in that: The outer tube needle (1) has an inner needle (10) built therein, and one end of the inner needle (10) is provided with two first dovetail grooves (9), the two first dovetail grooves (9) are engaged with the elastic motion structure (3), and the elastic motion structure (3) is arranged in the operating shell (2), and one side of the operating shell (2) is fixedly connected with two second dovetail blocks (6), the two second dovetail blocks (6) are respectively engaged with the two second dovetail grooves (7), the two second dovetail grooves (7) are provided on the side plate (8), and the side plate (8) is embedded and installed outside the outer tube needle (1).
2. A connection structure for a biopsy needle according to claim 1, characterized in that: Handles (4) are fixedly connected to both sides of the operating shell (2).
3. The connection structure for a biopsy needle according to claim 1, characterized in that: The elastic motion structure (3) comprises a movable rod (33), the movable rod (33) slides in the operating shell (2), the movable rod (33) penetrates the operating shell (2) and extends onto the outer tube needle (1), and one end of the movable rod (33) and the side wall of the operating shell (2) are fixedly connected with a spring (31).
4. A connection structure for a biopsy needle according to claim 3, characterized in that: An opening (5) is provided above the operating shell (2), an operating block (32) is provided in the opening (5), and the operating block (32) is fixedly connected above the movable rod (33).
5. The connection structure for a biopsy needle according to claim 3, characterized in that: The movable rod (33) is fixedly connected to one end away from the spring (31) with two first dovetail blocks (34), and the two first dovetail blocks (34) are engaged with the two first dovetail grooves (9).
6. A connection structure for a biopsy needle according to claim 5, characterized in that: A side opening is provided on one side of the side plate (8) and between the two first dovetail grooves (9), and the size of the side opening is adapted to the size of the first dovetail block (34).