Semi-automatic biopsy needle with adjustable auxiliary positioning

Abstract

The utility model relates to the technical field of medical devices, and provides a semi-automatic biopsy needle with adjustable auxiliary positioning, comprising a semi-automatic biopsy needle body, a coaxial needle and an auxiliary positioning bracket, characterized in that the auxiliary positioning bracket comprises a fixed bracket and a movable bracket, the fixed bracket is provided with a sliding groove inside, a limiting member is arranged in the sliding groove, a lock buckle is fixedly connected to the movable bracket, and the movable bracket is movably installed in the sliding groove through the lock buckle; the utility model drives the movable bracket to move in the sliding groove on the fixed bracket through the lock buckle, and the movable bracket is movably positioned through the limiting protrusion or the limiting rack in the sliding groove, so as to movably adjust the auxiliary positioning bracket, has a simple structure, is easy to operate, can be applicable to coaxial biopsy needles of different models and specifications or different sampling requirements, and has a certain versatility.

Description

Technical Field

[0001] The utility model relates to the technical field of medical instruments, in particular to an adjustable auxiliary positioning semi-automatic biopsy needle. Background Art

[0002] A semi-automatic biopsy needle is a medical device that can be used to take biopsy samples of tumors for pathological diagnosis, thereby classifying and categorizing cancer. In clinical use, the coaxial biopsy needle serves as a puncture channel for the semi-automatic biopsy needle to perform multiple samplings. That is, the coaxial biopsy needle is first punctured to the target position, the needle core is removed, and the wound semi-automatic biopsy needle is inserted into the needle tube of the coaxial needle, and the semi-automatic biopsy needle core button is pushed to perform biopsy sampling.

[0003] When performing a biopsy sampling operation, since the needle tube seat moves forward synchronously when the biopsy needle tube is stimulated, the doctor needs to control the coaxial needle needle tube seat and the semi-automatic biopsy needle needle tube seat to maintain a certain distance to avoid interference between the coaxial needle and the semi-automatic biopsy needle. In the existing semi-automatic biopsy needle, a limit bracket is usually set to fix the relative position of the coaxial needle and the biopsy needle, so as to avoid interference between the coaxial needle and the semi-automatic biopsy needle and affect the sampling effect; however, during the use of the semi-automatic biopsy needle, the needle tube passes through the end of the coaxial biopsy needle, and the needle tube retreats after winding, leaking out of the needle core sampling groove. Due to different models and specifications or sampling requirements, the length of the sampling groove is different, and the length of the biopsy needle tube leaking out of the end of the coaxial biopsy needle is different. The existing semi-automatic biopsy needle limit bracket is a fixed structure, and the safe stimulation distance cannot be adjusted according to the use requirements, and it is difficult to meet all the requirements of clinical use. Utility Model Content

[0004] Based on this, the purpose of the utility model is to provide an adjustable auxiliary positioning semi-automatic biopsy needle to address the deficiencies of the prior art.

[0005] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0006] A semi-automatic biopsy needle with adjustable auxiliary positioning comprises a semi-automatic biopsy needle body, a coaxial needle and an auxiliary positioning bracket, characterized in that the auxiliary positioning bracket comprises a fixed bracket and a movable bracket, a sliding groove is provided inside the fixed bracket, a limiting member is arranged in the sliding groove, a lock is fixedly connected to the movable bracket, and the movable bracket is movably installed in the sliding groove through the lock.

[0007] As a further improvement of the present invention, the limiting member includes a plurality of limiting protrusions arranged in the sliding groove.

[0008] As a further improvement of the utility model, the fixing frame is provided with an adjustment scale matched with the sliding groove, and the limiting protrusions are evenly distributed according to the adjustment scale.

[0009] As a further improvement of the present invention, the limiting protrusion can be replaced by a limiting rack.

[0010] As a further improvement of the present invention, the lock buckle includes a limiting block and a sliding block, and the sliding block is mounted in the sliding groove.

[0011] As a further improvement of the utility model, a card slot is provided on the movable frame, a card hook is provided at the end of the sliding block, and the movable frame and the lock buckle are fixed by the card slot and the card hook.

[0012] As a further improvement of the utility model, a limiting groove cooperating with the limiting member is provided on the sliding block.

[0013] As a further improvement of the utility model, a positioning plate is provided at the end of the movable frame, and a coaxial needle installation groove is opened on the positioning plate.

[0014] As a further improvement of the utility model, a clamping boss is provided on the semi-automatic biopsy needle body, and a clamping groove matched with the clamping boss is provided on the fixing frame.

[0015] As a further improvement of the utility model, both ends of the clamping boss are chamfered C-angle structures.

[0016] The beneficial effects of the utility model are:

[0017] 1. The utility model provides an adjustable auxiliary positioning semi-automatic biopsy needle. The auxiliary positioning bracket is an adjustable structure including a fixed frame and a movable frame. The movable frame is driven by a lock to move in a sliding groove on the fixed frame, so as to adjust the auxiliary positioning bracket. The utility model has a simple structure and is easy to operate. It can be applied to coaxial biopsy needles of different models and specifications or different sampling requirements, and has a certain degree of versatility.

[0018] 2. The utility model provides an auxiliary positioning gear adjustment mechanism in the auxiliary positioning bracket, a limiting groove is arranged on the locking sliding block, and a limiting protrusion matching the limiting groove is arranged in the sliding groove of the fixed frame. The number and position of the limiting protrusion can be set according to the use requirements of semi-automatic biopsy needles of different specifications, so as to realize gear switching by snapping and separating the limiting groove and the limiting protrusion, and then adjust the total length of the auxiliary positioning bracket, so as to quickly match coaxial biopsy needles of different models and specifications or different sampling requirements, simplify the operation process of semi-automatic biopsy needles, and solve the adaptability problems of various existing brackets.

[0019] 3. The utility model provides an auxiliary positioning stepless adjustment mechanism in the auxiliary positioning bracket, a limiting groove is arranged on the locking sliding block, and a uniformly distributed limiting protrusion or limiting rack matching with the limiting groove is arranged in the sliding groove of the fixed frame, and an adjustment scale matching with the limiting protrusion or the limiting rack is arranged on the fixed frame, so that the position of the movable frame can be accurately adjusted, and then the total length of the auxiliary positioning bracket can be adjusted to match coaxial biopsy needles of different models and specifications or different sampling requirements, which simplifies the operation process of semi-automatic biopsy needles and solves the adaptability problem of various existing brackets. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0021] Attached Figure 1 It is a schematic diagram of the overall structure of the utility model.

[0022] Attached Figure 2 It is a schematic diagram of the bottom structure of the utility model.

[0023] Attached Figure 3 This is a schematic diagram of the auxiliary positioning bracket structure of the utility model.

[0024] Attached Figure 4 It is a schematic diagram of the bottom structure of the auxiliary positioning bracket of the utility model.

[0025] Attached Figure 5 This is an exploded view of the gear adjustment structure of the auxiliary positioning bracket of the utility model.

[0026] Attached Figure 6 This is an exploded view of the stepless adjustment structure of the auxiliary positioning bracket of the utility model.

[0027] In the figure: 1 is a semi-automatic biopsy needle body, 101 is a snap-fitting boss, 2 is a coaxial needle, 3 is a fixed frame, 301 is a sliding groove, 302 is a limiting protrusion, 303 is an adjustment scale, 304 is a snap-fitting slot, 4 is a movable frame, 401 is a slot, 402 is a positioning plate, 403 is a coaxial needle mounting slot, 5 is a lock, 501 is a limiting block, 502 is a sliding block, 503 is a hook, and 504 is a limiting groove. DETAILED DESCRIPTION

[0028] The technical solutions in the embodiments of the utility model will be described clearly and completely below in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of them. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0029] like Figure 1 As shown, a semi-automatic biopsy needle with adjustable auxiliary positioning includes a semi-automatic biopsy needle body 1, a coaxial needle 2 and an auxiliary positioning bracket, characterized in that the auxiliary positioning bracket includes a fixed frame 3 and a movable frame 4, a sliding groove 301 is opened inside the fixed frame 3, a limiting member is arranged in the sliding groove 301, a lock buckle 5 is fixedly connected to the movable frame 4, and the movable frame 4 is movably installed in the sliding groove 301 through the lock buckle 5.

[0030] In a specific embodiment, further, the limiting member includes a plurality of limiting protrusions 302 arranged on the sliding groove 301, and the number and position of the limiting protrusions 302 can be set according to the model specifications and sampling requirements of the coaxial biopsy needle to adapt to different application scenarios.

[0031] In a specific embodiment, further, the fixed frame 3 is provided with an adjustment scale 303 that cooperates with the sliding groove, and the limiting protrusions 302 are evenly distributed according to the adjustment scale 303. The movable frame 4 realizes stepless adjustment and precise positioning through the cooperation between the limiting protrusions 302 and the adjustment scale 303, so that the movable frame 4 can be adjusted to the corresponding scale position according to the model specifications and sampling requirements of the coaxial biopsy needle to adapt to different application scenarios.

[0032] In a specific embodiment, further, the limit protrusion 302 can be replaced by a limit rack, and the movable frame 4 can achieve stepless adjustment and precise positioning through the cooperation of the limit rack and the adjustment scale 303, so that the movable frame 4 can be adjusted to the corresponding scale position according to the model specifications and sampling requirements of the coaxial biopsy needle to adapt to different application scenarios.

[0033] In a specific embodiment, further, the lock buckle 5 includes a limiting block 501 and a sliding block 502 , and the sliding block 502 is installed in the sliding groove 301 .

[0034] In a specific embodiment, further, a slot 401 is provided on the movable frame 4 , a hook 503 is provided at the end of the sliding block 502 , and the movable frame 4 and the lock buckle 5 are fixed by the slot 401 and the hook 503 .

[0035] In a specific embodiment, further, a limiting groove 504 cooperating with the limiting member is provided on the sliding block 502, and the limiting groove 504 adjusts and fixes the position of the movable frame 4 by slidingly combining with the limiting protrusion 302 or the limiting rack.

[0036] In a specific embodiment, further, a positioning plate 402 is provided at the end of the movable frame 4 , and a coaxial needle installation groove 403 is opened on the positioning plate 402 , and the coaxial needle installation groove 403 is used for limiting the assembly of the coaxial needle 2 .

[0037] In a specific embodiment, further, the semi-automatic biopsy needle body 1 is provided with a snap-fitting boss 101, and the fixing frame 3 is provided with a snap-fitting groove 304 that cooperates with the snap-fitting boss 101, and the fixing frame 3 is fixedly installed on the semi-automatic biopsy needle body 1 through the cooperation between the snap-fitting boss 101 and the snap-fitting groove 304.

[0038] In a specific embodiment, further, both ends of the clamping boss 101 are chamfered C-angle structures to facilitate the clamping and fixing of the auxiliary positioning bracket on the semi-automatic biopsy needle body 1.

[0039] The specific operation method is: when using the semi-automatic biopsy needle for sampling, the auxiliary positioning bracket is installed on the semi-automatic biopsy needle body 1 by snapping the snap-fitting boss 101 with the snap-fitting groove 304, and then according to the specifications and usage requirements of the semi-automatic biopsy needle, the lock buckle 5 is turned to slide and fix the limiting groove 504 to the limiting protrusion 302 or the appropriate position on the limiting rack, thereby completing the positioning of the movable frame 4 and reserving a sufficient safe firing distance to ensure that the semi-automatic biopsy needle does not interfere with the coaxial needle 2 after firing. After the firing is completed, the semi-automatic biopsy needle body 1 is taken out to complete a sampling.

[0040] It can be understood that the above specific description of the utility model is only used to illustrate the utility model and is not limited to the technical solution described in the embodiments of the utility model. Ordinary technicians in the field should understand that the utility model can still be modified or replaced by equivalents to achieve the same technical effect; as long as the use requirements are met, they are within the protection scope of the utility model.

[0041] It should also be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including 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 device. In the absence of further restrictions, the elements defined by the statement "include..." do not exclude the presence of other identical elements in the process, method, article or device including the elements.

Claims

1. A semi-automatic biopsy needle with adjustable auxiliary positioning, comprising a semi-automatic biopsy needle body (1), a coaxial needle (2) and an auxiliary positioning bracket, characterized in that: The auxiliary positioning bracket comprises a fixed frame (3) and a movable frame (4); a sliding groove (301) is provided inside the fixed frame (3); a limiting member is provided inside the sliding groove (301); a lock buckle (5) is fixedly connected to the movable frame (4); and the movable frame (4) is movably mounted on the sliding groove (301) via the lock buckle (5).

2. The adjustable auxiliary positioning semi-automatic biopsy needle according to claim 1, characterized in that: The limiting member comprises a plurality of limiting protrusions (302) arranged on the sliding groove (301).

3. The adjustable auxiliary positioning semi-automatic biopsy needle according to claim 2, characterized in that: The fixing frame (3) is provided with an adjustment scale (303) that matches the sliding groove, and the limiting protrusions (302) are evenly distributed according to the adjustment scale (303).

4. The adjustable auxiliary positioning semi-automatic biopsy needle according to claim 3, characterized in that: The limiting protrusion (302) may be replaced by a limiting rack.

5. The adjustable auxiliary positioning semi-automatic biopsy needle according to claim 1, characterized in that: The lock buckle (5) comprises a limiting block (501) and a sliding block (502), and the sliding block (502) is mounted in cooperation with the sliding groove (301).

6. The adjustable auxiliary positioning semi-automatic biopsy needle according to claim 5, characterized in that: The movable frame (4) is provided with a slot (401), the end of the sliding block (502) is provided with a hook (503), and the movable frame (4) and the lock buckle (5) are fixed by the slot (401) and the hook (503).

7. The semi-automatic biopsy needle with adjustable auxiliary positioning according to claim 5, characterized in that: The sliding block (502) is provided with a limiting groove (504) which matches with the limiting member.

8. The semi-automatic biopsy needle with adjustable auxiliary positioning according to claim 1, characterized in that: A positioning plate (402) is provided at the end of the movable frame (4), and a coaxial needle mounting groove (403) is provided on the positioning plate (402).

9. The semi-automatic biopsy needle with adjustable auxiliary positioning according to claim 1, characterized in that: The semi-automatic biopsy needle body (1) is provided with a clamping boss (101), and the fixing frame (3) is provided with a clamping groove (304) matching with the clamping boss (101).

10. The semi-automatic biopsy needle with adjustable auxiliary positioning according to claim 9, characterized in that: Both ends of the clamping boss (101) are chamfered C-angle structures.

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