Percussion biopsy needle

Abstract

The utility model discloses a percussion biopsy needle, comprising: a shell, a cutting assembly and a loading and firing module, wherein the cutting assembly comprises: a sliding seat and a cutting knife tube, a cutting ring blade is arranged at the front end of the cutting knife tube, the cutting knife tube is connected to the sliding seat, and the sliding seat can be arranged inside the shell to slide back and forth between a firing position and a cutting position; the loading and firing module can drive the sliding seat to move from the cutting position to the firing position for loading, or drive the sliding seat to move from the firing position to the cutting position for firing; wherein the loading and firing module comprises a dial wheel that can be toggled along a first rotation direction, and the dial wheel moves the sliding seat from the cutting position to the firing position by moving along the first rotation direction. The sliding seat can be moved from the cutting position to the firing position by toggling the dial wheel in the loading and firing assembly, and compared with the previous operation mode of pressing and loading, the user only needs a small force to complete the loading, so as to improve the user's experience.

Description

Technical Field

[0001] The present application relates to the technical field of medical devices, and in particular to a percussion biopsy needle. Background Art

[0002] The biopsy needle is a medical device that is suitable for multiple organs such as the kidney, liver, lung, breast, thyroid, prostate, pancreas, testicle, uterus, ovary, and body surface. It can be used for sampling and aspirating cells from cone tumors and unknown tumors or tissues. It is currently a widely used device in clinical practice. The puncture biopsy needle is a soft tissue biopsy device. The ultrasound-guided puncture biopsy and interventional treatment can sample the patient's lesion with minimal trauma, providing valuable preoperative diagnostic information for the clinic. It is simple, safe, and fast, with good sensitivity, high accuracy, strong credibility, and almost no trauma to patients. It has now become one of the important diagnostic methods for clinical diseases.

[0003] The percussion biopsy needle currently used in clinical practice performs loading and firing actions during sampling. During loading, the cutting knife tube is returned to the firing position to lock the loading, and during firing, the corresponding firing position is operated to cause the cutting knife tube to fire forward to cut the tissue.

[0004] However, existing percussion biopsy needles are loaded by holding the handle of the biopsy needle and pressing the loading operation part with the thumb. Not only does it require a large force to press the loading part to complete the loading, but each operator's thumb is of different lengths. Some users may find that the practical experience is poor. Utility Model Content

[0005] The present application aims to provide a percussion-type biopsy needle, which can be loaded by turning a dial.

[0006] The present application provides a percussion biopsy needle, comprising:

[0007] case;

[0008] The cutting assembly comprises: a sliding seat and a cutting blade tube, the front end of the cutting blade tube is provided with a cutting ring blade, the cutting blade tube is connected to the sliding seat, and the sliding seat is arranged inside the housing so as to be reciprocatingly slidable between a firing position and a cutting position;

[0009] A loading and firing module, operable to drive the sliding seat to move from the cutting position to the firing position to load the chamber, or to drive the sliding seat to move from the firing position to the cutting position to fire;

[0010] Wherein, the loading and firing module includes a thumbwheel transmission-connected to the sliding seat, and the thumbwheel is operable to rotate along a first rotation direction so that the sliding seat moves from the cutting position to the firing position.

[0011] As a further solution of the percussion biopsy needle provided in the present application, the percussion biopsy needle also includes a sampling core needle, on which a sampling groove is provided. The sampling core needle is inserted into the cutting knife tube and can reciprocate along the axial direction of the cutting knife tube.

[0012] As a further solution of the percussion biopsy needle provided in the present application, the percussion biopsy needle also includes a puncture tube connected to the shell, a puncture needle tip is provided at the front end of the puncture tube, a sampling window is provided on the outer wall of the puncture tube close to the puncture needle tip, the cutting knife tube is inserted into the puncture tube, and the cutting knife tube is connected to a negative pressure suction device.

[0013] As a further solution of the percussion biopsy needle provided in the present application, the loading and firing module includes:

[0014] A reset module, used for driving the sliding seat to move from the cutting position to the firing position, and the reset module can be operably separated from or connected to the sliding seat, and the thumbwheel is arranged on the reset module to input the reset operation;

[0015] The firing module is transmission-connected with the sliding seat, and is used for driving the sliding seat to move from the firing position to the cutting position after the resetting module is unlocked and disengaged from the sliding seat.

[0016] As a further solution of the percussion biopsy needle provided in the present application, the reset module includes a seat body and an output gear, the sliding seat is further provided with a plurality of teeth, the plurality of teeth are arranged along a direction parallel to the firing position to the cutting position, the thumbwheel and the output gear are both rotatably mounted on the seat body, and the thumbwheel and the output gear are transmission-connected;

[0017] The seat body is arranged on the sliding seat so as to be reciprocatingly slidable along a transverse direction, so that the seat body can reciprocate between the connecting position and the releasing position, and the transverse direction is perpendicular to the direction from the firing position to the cutting position;

[0018] When the seat body is in the connecting position, the output gear is engaged with the plurality of teeth, and when the seat body is in the connecting position, the sliding seat can move from the cutting position to the firing position when the dial is turned along the first rotation direction; when the seat body slides to the releasing position, the output gear is disengaged from the plurality of teeth, and the firing module fires the sliding seat to slide in the direction from the firing position to the cutting position.

[0019] As a further solution of the firing biopsy needle provided in the present application, the reset module also includes a seat reset elastic member, and the seat reset elastic member is arranged between the shell and the seat to store elastic potential energy when the seat moves from the connection position to the release position.

[0020] As a further solution of the firing biopsy needle provided in the present application, the seat body is provided with a sliding firing operating part for pushing the seat body from the connecting position to the releasing position, and the sliding firing operating part is operably exposed outside the shell.

[0021] As a further solution of the percussion biopsy needle provided in the present application, the reset module further includes: a ratchet assembly, wherein the ratchet assembly includes a ratchet coaxially connected to the thumbwheel, so that the thumbwheel can be turned along the first rotation direction.

[0022] As a further solution of the percussion biopsy needle provided in the present application, the resetting module further includes a guide member, the guide member is disposed inside the shell, and the sliding seat is slidably disposed on the guide member.

[0023] As a further solution of the firing biopsy needle provided in the present application, the firing module includes a firing elastic member, which is arranged between the sliding seat and the shell, and the firing elastic member can store elastic potential energy when the sliding seat moves from the cutting position to the firing position.

[0024] According to the percussion biopsy needle of the above embodiment, the sliding seat can be moved from the cutting position to the firing position by turning the dial in the loading and firing assembly. Compared with the previous operation method of pressing to load the chamber, the user only needs a smaller force to complete the loading, thereby improving the user experience. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 A three-dimensional diagram of the percussion biopsy needle provided by the utility model;

[0026] Figure 2 An exploded view of the percussion biopsy needle provided by the utility model;

[0027] Figure 3 A three-dimensional diagram of the percussion biopsy needle provided by the utility model with the shell removed;

[0028] Figure 4 for Figure 3 A local enlarged schematic diagram of the middle A;

[0029] Figure 5 This is a cross-sectional view of the connection relationship between the sampling needle tube and the sampling tube in the percussion-type biopsy needle provided by the utility model. DETAILED DESCRIPTION

[0030] The present application is further described in detail below by specific embodiments in conjunction with the accompanying drawings. Wherein similar elements in different embodiments adopt associated similar element numbers. In the following embodiments, many detailed descriptions are intended to enable the present application to be better understood. However, those skilled in the art can easily recognize that some of the features can be omitted in different situations, or can be replaced by other elements, materials, and methods. In some cases, some operations related to the present application are not shown or described in the specification, in order to avoid the core part of the present application being overwhelmed by too much description, and for those skilled in the art, it is not necessary to describe these related operations in detail, and they can fully understand the related operations based on the description in the specification and the general technical knowledge in the art.

[0031] In addition, the features, operations or characteristics described in the specification can be combined in any appropriate manner to form various implementations, and the operation steps involved in each embodiment can also be replaced or adjusted in a sequence in a manner that is obvious to those skilled in the art. Therefore, the specification and drawings are only for the purpose of clearly describing a certain embodiment and do not mean that the composition and / or sequence are necessary.

[0032] The serial numbers of the components in this document, such as "first", "second", etc., are only used to distinguish the objects described and do not have any order or technical meaning. The "connection" and "coupling" mentioned in this application, unless otherwise specified, include direct and indirect connections (couplings).

[0033] See also Figure 1-Figure 5 As shown, the firing biopsy needle provided by the present application includes: a housing 10 , a cutting assembly 20 ′ and a loading and firing assembly 20 .

[0034] The housing 10 is composed of an upper housing 11 and a lower housing 12 to facilitate the installation of the cutting assembly 20 ′ and the loading and firing assembly 20 .

[0035] The cutting assembly 20 ′ includes a sliding seat 21 and a cutting blade tube 22 . A cutting ring blade 221 is provided at the front end of the cutting blade tube 22 . The cutting blade tube 22 is connected to the sliding seat 21 . The sliding seat 21 is arranged inside the housing 10 so as to slide back and forth between a firing position and a cutting position.

[0036] The operable driving slide seat 21 of the chambering and firing assembly 20 moves from the cutting position to the firing position to load the chamber, or the operable driving slide seat 21 of the chambering and firing assembly 20 moves from the firing position to the cutting position to fire.

[0037] In actual application, the loading and firing assembly 20 drives the sliding seat 21 to move from the cutting position to the firing position for loading. When it is necessary to sample the tissue to be sampled, the loading and firing assembly 20 drives the sliding seat 21 to move from the firing position to the cutting position to fire the cutting knife tube 22 to penetrate into the tissue to be sampled.

[0038] In the present embodiment, the loading and firing assembly 20 includes a dial wheel 232 which is transmission-connected to the sliding seat 21. The dial wheel 232 can be operated to rotate along a first rotation direction, so that the dial wheel 232 is moved along the first rotation direction to move the sliding seat 21 from the cutting position to the firing position. Compared with the previous operation method of pressing to load the gun, the user only needs a smaller force to complete the loading, and the user has a better experience.

[0039] In one embodiment of the present application, the percussion biopsy needle provided in the present application also includes a sampling core needle 40, which is provided with a sampling groove (not shown in the figure). The sampling core needle 40 is inserted into the cutting knife tube 22 and can move back and forth along the axial direction of the cutting knife tube 22.

[0040] In a specific embodiment, after the cutting knife tube 22 is inserted into the tissue to be sampled, the sampling core needle 40 is moved so that the sampling core needle 40 moves along its axial direction in the cutting knife tube 22 toward the tissue to be sampled, so that the tissue can be sampled into the sampling groove.

[0041] In another embodiment of the present application, Figure 5 As shown, the percussion biopsy needle provided in the present application also includes a puncture tube 50 connected to the shell 10, a puncture needle tip is provided at the front end of the puncture tube 50, a sampling window 52 is provided on the outer wall of the puncture tube 50 near the puncture needle tip 51, the cutting knife tube 22 is inserted into the puncture tube 50, and the cutting knife tube 22 is connected to a negative pressure suction device.

[0042] In this embodiment, the puncture tube 50 is first inserted into the tissue to be sampled, and the cutting knife tube 22 is moved from the firing position to the cutting position under the action of the loading and firing assembly 20 to cut the tissue. The tissue is sucked from the cutting knife tube 22 by the negative pressure through the connected negative pressure suction device, and after the cutting is completed, the cutting knife tube 22 is retreated from the cutting position to the firing position under the action of the loading and firing assembly 20 to prepare for the next firing.

[0043] In the present application, the chambering and firing assembly 20 further includes a reset module 23 and a firing module 24, both of which are arranged inside the housing 10 and are transmission-connected to the sliding seat 21, the reset module 23 is used to drive the sliding seat 21 to move from the cutting position to the firing position, and the reset module 23 can be operably disconnected from or connected to the sliding seat, and the dial 232 is arranged on the reset module 23 to input the reset operation. The firing module 24 is used to drive the sliding seat 21 to move from the firing position to the cutting position after the reset module 23 is unlocked and disconnected from the sliding seat 21.

[0044] In this embodiment, the sliding seat 21 is moved from the cutting position to the firing position by the reset module 23, and then the connection with the sliding seat 21 is unlocked, and then the firing module 24 drives the sliding seat 21 to move from the firing position to the cutting position, so that the cutting knife tube 22 can sample the tissue to be sampled.

[0045] It should be noted that when sampling of the tissue to be sampled is required, the sliding seat 21 is moved from the cutting position to the firing position by the resetting module 23, and then the sliding seat 21 is slid from the firing position to the cutting position by the firing module 24 to drive the cutting knife tube 22 to move synchronously, and the cutting knife tube 22 can be inserted into the tissue to be sampled, so as to sample the tissue to be sampled. The tissue to be sampled can be a cone tumor or an unknown tumor in various organs such as kidney, liver, lung, breast, thyroid, prostate, pancreas, testicle, uterus, ovary, body surface, etc.

[0046] Of course, in other embodiments, after sampling the tissue to be sampled by cutting the knife tube 22, the sliding seat 21 can slide from the cutting position to the firing position to perform the next sampling action.

[0047] The reset module 23 also includes a seat body 231 and an output gear 233. The sliding seat 21 is also provided with a plurality of teeth 211, which are arranged along a direction parallel to the firing position to the cutting position. The dial 232 and the output gear 233 can be rotatably mounted on the seat body 231, and the dial 232 is transmission-connected to the output gear 233.

[0048] The seat body 231 is disposed on the sliding seat 21 so as to be reciprocally slidable along a transverse direction, and the transverse direction is perpendicular to the direction from the firing position to the cutting position. In other words, the sliding directions of the sliding seat 21 and the seat body 231 are perpendicular to each other.

[0049] When the seat body 231 is in the connection position, the output gear 233 is meshed with the plurality of teeth 211, and when the seat body 231 is in the connection position, the sliding seat 21 can move from the cutting position to the firing position when the dial 232 is swung along the first rotation direction. When the seat body 231 slides from the connection position to the release position, the output gear 233 is disengaged from the plurality of teeth 211, and the cutting firing module 24 can be used to fire the sliding seat 21 to move from the firing position to the cutting position.

[0050] In this embodiment, by turning the dial 232, the sliding seat 21 can be driven to move from the cutting position to the firing position through the output gear 233 and the plurality of teeth 211. By moving the seat body 231 in the direction from the connection position to the release position, the output gear 233 can be disengaged from the plurality of teeth 211, and the sliding seat 21 can be released. At this time, the cutting and firing module 24 can drive the sliding seat 21 in the release position to slide in the direction from the firing position to the cutting position.

[0051] In this embodiment, a rack can be provided on the sliding seat 21 , and the extending direction of the rack is arranged parallel to the direction from the firing position to the cutting position, so that the teeth on the rack form the above-mentioned multiple teeth 211 .

[0052] In one embodiment of the present application, the output gear 233 can be directly arranged on the same rotating shaft as the dial wheel 232, or the input gear 2331 can be arranged on the rotating shaft corresponding to the dial wheel 232 (eg, Figure 4 As shown), the input gear 2331 is directly or indirectly meshed with the output gear 233, so that the driving force of the dial wheel 232 can be transmitted to the output gear 233 through the dial wheel 232.

[0053] The reset module 23 also includes a limit assembly 33, which can be reciprocatingly slidably arranged on the sliding seat 21 between a limit position and a release position. In the limit position, the limit assembly 33 can limit the seat body 231 in the lateral direction to the connection position, and in the release position, the limit assembly 33 releases the seat body 231.

[0054] In this embodiment, an operating portion 31 is further provided on the position limiting assembly 33. Specifically, by pulling the operating portion 31, the position limiting assembly 33 can be reciprocatingly slidably provided on the sliding seat 21 along the direction from the firing position to the cutting position.

[0055] In this embodiment, the reset module 23 also includes a limiting elastic reset member 34, and a stop portion 212 is also provided on the sliding seat 21. The limiting elastic reset member 34 is arranged between the stop portion 212 and the limiting component 33. When the operating part 31 is moved from the cutting position to the collecting position, the limiting component 33 moves to the side of the seat body 231 in the connecting position under the action of the limiting elastic reset member 34, and through the action of the limiting component 33 and the inner wall of the shell 10, the limiting component 33 can limit the seat body 231 in the connecting position to prevent the seat body 231 from moving from the connecting position to the releasing position.

[0056] In this embodiment, the reset module 23 also includes a seat body reset elastic member 237, which is arranged between the shell 10 and the seat body 231 to store elastic potential energy when the seat body 231 moves from the connection position to the release position, so that after the sliding seat 21 moves from the cutting position to the firing position, the seat body 231 can be moved from the release position to the connection position under the action of the elastic potential energy.

[0057] In this embodiment, the seat body 231 is provided with a sliding firing operating part for pushing the seat body 231 from the connection position to the release position, and the sliding firing operating part is operably exposed to the outside of the housing 10. Part of the dial wheel 232 is exposed to the outside of the housing 10, and the seat body 231 is operably provided with a sliding firing operating part exposed to the outside of the housing 10, and the sliding firing operating part can be the part of the dial wheel 232 exposed to the housing 10. Accordingly, a limit structure is also provided on both sides of the dial wheel 232 to improve the reliability of the horizontal dial wheel 232.

[0058] Of course, in other embodiments, the installation shaft used to install the dial 232 can also be used as a sliding firing operating part. The installation shaft usually extends to the outside of the shell 10 through the seat body 231, and the part of the installation shaft extending to the outside of the shell 10 can be used as a sliding firing operating part.

[0059] In one embodiment of the present application, a first exposed hole 111 is further provided on the upper shell 11, so that part of the dial wheel 232 is exposed to the outside of the shell 10 through the first exposed hole 111, so that the operator can operate the dial wheel 232. A second exposed hole 121 is further provided on the lower shell 12, so that part of the operating part 31 is exposed to the outside of the shell 10 through the second exposed hole 121, so that the operator can operate the operating part 31.

[0060] In order to enable the dial wheel 232 to rotate along the first rotation direction, the reset module 23 provided in this embodiment also includes: a ratchet assembly 236, which is coaxially connected to the dial wheel 232, allowing the dial wheel 232 to be turned along the first rotation direction to avoid accidental contact when turning the dial wheel 232 and causing the sliding seat 21 to move from the firing position to the cutting position.

[0061] The ratchet assembly 236 includes a ratchet 2361, a ratchet pawl 2362 and a pawl elastic reset member 2363, wherein the ratchet 2361 is coaxially connected to the dial 232, one end of the ratchet pawl 2362 is swingably mounted on the seat 231, the other end of the ratchet pawl 2362 abuts against the gear teeth on the circumference of the ratchet 2361, one end of the pawl reset elastic member 2363 is connected to the ratchet pawl 2362, and the other end of the ratchet reset elastic member 2363 is connected to the seat 231, so that the ratchet 2361 can drive the dial 232 to rotate synchronously along the first rotation direction.

[0062] The firing module 24 includes a firing elastic member 241, which is disposed between the sliding seat 21 and the inner wall of the shell 10. The firing elastic member 241 can store elastic potential energy when the sliding seat 21 moves from the cutting position to the firing position. In this way, when the seat body 231 moves from the connecting position to the releasing position, the sliding seat 21 can be pushed to move from the firing position to the cutting position under the action of the elastic potential energy stored in the firing elastic member 241.

[0063] The reset module 23 also includes a guide member 238, which is arranged inside the shell 10. The sliding seat 21 is slidably arranged on the guide member 238. The sliding of the sliding seat 21 is guided by the guide member 238 so that it can maintain reciprocating sliding between the firing position and the cutting position.

[0064] In this embodiment, the firing elastic member 241 is a firing spring, and the firing spring is sleeved on the guide member 238. The guide member 238 is preferably a light rod arranged along the direction from the firing position to the cutting position.

[0065] In summary, the firing biopsy needle provided in the present application can move the sliding seat from the cutting position to the firing position by turning the dial in the loading and firing assembly. Compared with the previous operation method of pressing to load the chamber, the user only needs a smaller force to complete the loading, thereby improving the user experience.

[0066] The above specific examples are used to illustrate the present invention, which are only used to help understand the present invention and are not intended to limit the present invention. For those skilled in the art of the present invention, some simple deductions, deformations or substitutions can be made based on the idea of ​​the present invention.

Claims

1. A percussion biopsy needle, characterized in that: include: case; The cutting assembly comprises: a sliding seat and a cutting blade tube, the front end of the cutting blade tube is provided with a cutting ring blade, the cutting blade tube is connected to the sliding seat, and the sliding seat is arranged inside the housing so as to be reciprocatingly slidable between a firing position and a cutting position; A loading and firing module, operable to drive the sliding seat to move from the cutting position to the firing position to load the chamber, or to drive the sliding seat to move from the firing position to the cutting position to fire; Wherein, the loading and firing module includes a thumbwheel transmission-connected to the sliding seat, and the thumbwheel is operable to rotate along a first rotation direction so that the sliding seat moves from the cutting position to the firing position.

2. The percussion biopsy needle according to claim 1, characterized in that: The percussion biopsy needle also includes a sampling core needle, on which a sampling groove is arranged. The sampling core needle is inserted into the cutting knife tube and can reciprocate along the axial direction of the cutting knife tube.

3. The percussion biopsy needle according to claim 1, characterized in that: The percussion biopsy needle also includes a puncture tube connected to the shell, a puncture needle tip is provided at the front end of the puncture tube, a sampling window is provided on the outer wall of the puncture tube close to the puncture needle tip, the cutting knife tube is inserted into the puncture tube, and the cutting knife tube is connected to a negative pressure suction device.

4. The percussion biopsy needle according to any one of claims 1 to 3, characterized in that: The chambering and firing module further comprises: A reset module, used for driving the sliding seat to move from the cutting position to the firing position, and the reset module can be operably separated from or connected to the sliding seat, and the thumbwheel is arranged on the reset module to input the reset operation; The firing module is transmission-connected with the sliding seat, and is used for driving the sliding seat to move from the firing position to the cutting position after the resetting module is unlocked and disengaged from the sliding seat.

5. The percussion biopsy needle according to claim 4, characterized in that: The reset module includes a seat body and an output gear. The sliding seat is also provided with a plurality of teeth, and the plurality of teeth are arranged along a direction parallel to the firing position to the cutting position. The thumbwheel and the output gear can be rotatably mounted on the seat body, and the thumbwheel and the output gear are in transmission connection. The seat body is arranged on the sliding seat so as to be reciprocatingly slidable along a transverse direction, so that the seat body can reciprocate between the connecting position and the releasing position, and the transverse direction is perpendicular to the direction from the firing position to the cutting position; When the seat body is in the connecting position, the output gear is engaged with the plurality of teeth, and when the seat body is in the connecting position, the sliding seat can move from the cutting position to the firing position when the dial is turned along the first rotation direction; when the seat body slides to the releasing position, the output gear is disengaged from the plurality of teeth, and the firing module fires the sliding seat to slide in the direction from the firing position to the cutting position.

6. The percussion biopsy needle according to claim 5, characterized in that: The resetting module further comprises a seat resetting elastic member, wherein the seat resetting elastic member is arranged between the shell and the seat to store elastic potential energy when the seat moves from the connecting position to the releasing position.

7. The percussion biopsy needle according to claim 6, characterized in that: The seat body is provided with a sliding firing operating part for pushing the seat body from the connecting position to the releasing position, and the sliding firing operating part is operably exposed outside the shell.

8. The percussion biopsy needle according to claim 4, characterized in that: The reset module further includes: a ratchet assembly, wherein the ratchet assembly includes a ratchet coaxially connected to the thumbwheel, so that the thumbwheel can be thumbed along a first rotation direction.

9. The percussion biopsy needle according to claim 4, characterized in that: The reset module further comprises a guide member, wherein the guide member is arranged inside the housing, and the sliding seat is slidably arranged on the guide member.

10. The percussion biopsy needle according to claim 4, characterized in that: The firing module includes a firing elastic member, which is disposed between the sliding seat and the shell. The firing elastic member can store elastic potential energy when the sliding seat moves from the cutting position to the firing position.

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