CN117442255A

CN117442255A - Biopsy needle and medical device

Info

Publication number: CN117442255A
Application number: CN202311627195.8A
Authority: CN
Inventors: 邓洋; 谢远亮
Original assignee: Kaben Shenzhen Medical Equipment Co ltd
Current assignee: Kaben Shenzhen Medical Equipment Co ltd
Priority date: 2023-11-29
Filing date: 2023-11-29
Publication date: 2024-01-26

Abstract

The present application relates to a biopsy needle and medical device. The biopsy needle comprises a shell component, a biopsy needle component, a firing key and an error-proof contact piece, wherein the biopsy needle component is arranged in the shell component, the firing key is arranged on the shell component, the error-proof contact piece is arranged on the shell component and does not extend out of the shell component, when the error-proof contact piece is positioned at a limiting position, the error-proof contact piece prevents the firing key from moving along the axial direction of the biopsy needle and fires the biopsy needle component after winding, and when the error-proof contact piece is positioned at a releasing position, the firing key is prevented from avoiding and allowing the firing key to move along the axial direction of the biopsy needle and fire the biopsy needle component after winding. The biopsy needle and the medical equipment in the application skillfully utilize the shell component to avoid the false touch piece from being touched by a false touch, so as to avoid the false triggering of the trigger key to get on the biopsy needle component after winding, and further have a better limiting effect.

Description

Biopsy needle and medical device

Technical Field

The invention relates to the technical field of medical instruments, in particular to a biopsy needle and medical equipment.

Background

The biopsy needle is an injection puncture member commonly used for biopsy sampling, cell aspiration and other purposes of cone tumors, unknown tumors and the like of various organs such as kidneys, livers, lungs, mammary glands, thyroid glands and the like.

The working process of the biopsy needle is to respectively string the inner needle and the outer needle outside the body, then to confirm the focus by matching with a positioning device (such as an ultrasonic detection device), to insert the inner needle and the outer needle into the vicinity of the focus to be sampled of a patient at the same time after confirming the focus position, and then to fire the inner needle and the outer needle in sequence to pierce the focus position in order to finish the sampling.

When a biopsy needle is used for sampling a focus part of a patient, the inner needle and the outer needle after winding are easy to be subjected to slight vibration (when the biopsy needle is placed on an operating table after winding, or is taken from the operating table after focus confirmation), or are inserted into the patient body to be subjected to firing sampling, and risks of accidental injury to patients or impact damage to the inner needle and the outer needle caused by false firing exist.

In the prior art, in order to solve the problem of false touch, an anti-false touch piece is arranged on the biopsy needle, but the limiting effect of the anti-false touch structure is not good, and the risk that false touch is easy to occur and the biopsy needle is triggered still exists.

Disclosure of Invention

In view of the above, it is desirable to provide a biopsy needle having a false touch preventing structure with a good stopper effect and a medical device having the biopsy needle.

A biopsy needle, the biopsy needle comprising:

a housing assembly;

a biopsy needle assembly disposed within the housing assembly;

the firing key is arranged on the shell assembly; and

the anti-false touch piece is arranged on the shell assembly and does not extend out of the shell assembly, and the anti-false touch piece is provided with a limiting position and a releasing position;

when the anti-false touch piece is positioned at the limiting position, the anti-false touch piece prevents the firing key from firing the biopsy needle assembly after winding, and when the anti-false touch piece is positioned at the releasing position, the anti-false touch piece avoids the firing key and allows the firing key to fire the biopsy needle assembly after winding.

Further, the shell assembly comprises an inner shell and an outer shell, the inner shell is arranged in the outer shell, an installation groove is formed in the outer side wall of the outer shell, and a first abdication hole is formed in the installation groove;

the anti-false touch piece comprises a first pushing part, a locking part and a connecting part connected between the first pushing part and the locking part, wherein the first pushing part is positioned in the mounting groove, the connecting part is arranged in the first abdication hole in a penetrating way, and the locking part is positioned between the inner shell and the outer shell;

the first pushing part drives the locking part to move along the circumferential direction of the biopsy needle under the action of external force so as to switch the anti-false touch piece between the limit position and the release position;

when the anti-misoperation touch piece is positioned at the limiting position, the locking part is propped against the firing key and prevents the firing key from firing the biopsy needle assembly, and when the anti-misoperation touch piece is positioned at the releasing position, the locking part is prevented from avoiding the firing key and allows the firing key to fire the biopsy needle assembly.

Further, a first limit part and a second limit part are formed on the outer side wall structure of the inner shell, and the first limit part and the second limit part are distributed at intervals along the circumferential direction of the biopsy needle;

the anti-false touch piece further comprises a first limiting plate part, the first limiting plate part is arranged on one side of the locking part, which is opposite to the connecting part, and a third limiting part is formed on the first limiting plate part in a structured manner;

when the anti-misoperation contact piece is located at the limiting position, the third limiting part and the first limiting part are mutually limited, and when the anti-misoperation contact piece is located at the releasing position, the third limiting part and the second limiting part are mutually limited.

Further, an outer side wall of the inner housing is configured to be formed with a first guide passage provided along a circumferential direction of the biopsy needle for guiding the first stopper plate portion to slide along the circumferential direction of the biopsy needle.

Further, the outer sidewall of the inner housing is configured with first and second guide tabs that are spaced apart along the axial direction of the biopsy needle and define the first guide channel.

Further, the anti-false touch piece further comprises a second limiting plate part, and the second limiting plate part is arranged between the locking part and the connecting part;

the inner side wall of the housing is configured to form a second guide channel for guiding the second limiting plate portion to slide circumferentially along the biopsy needle.

Further, the second guide channel is a groove structure formed by recessing the inner side wall of the shell, and one end of the second limiting plate part in the thickness direction of the second limiting plate part extends into the second guide channel.

Further, a second abdication hole is further formed in the mounting groove, the firing key comprises a second pushing part, an inner needle firing part and a connecting rod part, the connecting rod part is connected between the second pushing part and the inner needle firing part, the inner needle firing part is positioned at the firing end of the biopsy needle assembly, and the inner needle firing part is controlled by the second pushing part and is used for firing the biopsy needle assembly; the second pushing part is positioned in the mounting groove, and the connecting rod part is arranged in the second abdication hole in a penetrating way;

when the error-preventing contact piece is positioned at the limiting position, the locking part is propped against the connecting rod part; when the anti-misoperation piece is positioned at the release position, the locking part avoids the connecting rod part.

Further, an avoidance notch is formed in the connecting rod portion, and when the false touch preventing member is in the release position, the locking portion is aligned with the avoidance notch in the axial direction of the biopsy needle.

A medical device comprising a biopsy needle according to any one of the preceding claims.

According to the biopsy needle and the medical equipment, the anti-misoperation piece is arranged on the shell component and does not extend out of the shell component, so that the anti-misoperation piece is skillfully utilized to be reduced, and further the biopsy needle component after the firing key is mistakenly fired and wound is avoided. Therefore, after winding and before sampling, the risk that the firing key is wrongly fired can be effectively reduced, so that the risk that the biopsy needle assembly is wrongly fired is reduced, the risk that a doctor-patient is accidentally injured by the biopsy needle or the biopsy needle impacts on-site instrument consumable is reduced, and the use safety of the biopsy needle is improved.

Drawings

FIG. 1 is a schematic view of the overall structure of a biopsy needle according to an embodiment of the present application.

Fig. 2 is a block diagram of a medical device according to an embodiment of the present application.

Fig. 3 is a cross-sectional view of a biopsy needle according to another embodiment of the present application.

Fig. 4 is an enlarged schematic view of the partial structure a in fig. 3.

Fig. 5 is an exploded view of a false touch prevention member mated with a biopsy needle body in accordance with yet another embodiment of the present application.

Fig. 6 is a schematic structural diagram of an anti-false touch device according to an embodiment of the present application.

Fig. 7 is a schematic structural diagram of another view of the anti-false touch device according to an embodiment of the present application.

Fig. 8 is a schematic structural view of a hidden part of a housing according to an embodiment of the present application.

Fig. 9 is an enlarged schematic view of the partial structure B in fig. 8.

Fig. 10 is a schematic structural view of an inner shell according to an embodiment of the present application.

FIG. 11 is another perspective cross-sectional view of a biopsy needle according to an embodiment of the present application.

Fig. 12 is an enlarged view of the partial structure C in fig. 11.

FIG. 13 is a schematic view of a firing key according to an embodiment of the present application.

Reference numerals:

100. a biopsy needle; 11. an inner case; 111. a locking part of the inner needle seat; 112. a locking part of the outer needle seat; 113. a first limit part; 114. a second limit part; 115. a first guide channel; 1151. a first guide projection; 1152. a second guide projection; 12. a housing; 121. a mounting groove; 1211. a first relief hole; 1212. a second relief hole; 122. a second guide channel; 21. an inner needle; 211. a sampling groove; 22. an inner needle seat; 221. an inner needle connecting part; 222. an inner needle upper chord connection part; 223. an inner needle seat clamping part; 224. an outer needle firing part; 23. an outer needle; 231. a cutting edge; 24. an outer needle stand; 241. an outer needle connecting part; 242. an outer needle upper chord connection part; 243. an outer needle seat clamping part; 30. a firing key; 31. a second pushing part; 32. an inner needle firing part; 33. a connecting rod portion; 331. a first sub-section; 3311. avoiding the notch; 3312. a limit blocking part; 332. a second sub-section; 40. an error touch prevention piece; 41. a first pushing part; 42. a locking part; 43. a connection part; 44. a first limiting plate portion; 441. a third limit part; 442. a front plate portion; 443. a middle plate portion; 444. a rear plate portion; 45. a second limiting plate portion; 51. an inner needle winding key; 52. an outer needle winding key; 53. an inner needle seat spring; 54. an outer hub spring; 1000. a medical device; 200. a display device; 300. a control device; 400. a fusion device; 500. a sensor; 600. a detection and analysis device; 700. an ultrasonic device.

Detailed Description

In order to make the above objects, features and advantages of the present application more comprehensible, embodiments accompanied with figures are described in detail below. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present application. This application is, however, susceptible of embodiment in many other forms than those described herein and similar modifications can be made by those skilled in the art without departing from the spirit of the application, and therefore the application is not to be limited to the specific embodiments disclosed below.

In the description of the present application, it should be understood that the terms "center," "longitudinal," "transverse," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," etc. indicate orientations or positional relationships based on the orientation or positional relationships shown in the drawings, are merely for convenience in describing the present application and simplifying the description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be configured and operated in a particular orientation, and therefore should not be construed as limiting the present application.

Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In the description of the present application, the meaning of "plurality" is at least two, such as two, three, etc., unless explicitly defined otherwise.

In this application, unless specifically stated and limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; either directly or indirectly, through intermediaries, or both, may be in communication with each other or in interaction with each other, unless expressly defined otherwise. The specific meaning of the terms in this application will be understood by those of ordinary skill in the art as the case may be.

In this application, unless expressly stated or limited otherwise, a first feature "up" or "down" a second feature may be the first and second features in direct contact, or the first and second features in indirect contact via an intervening medium. Moreover, a first feature being "above," "over" and "on" a second feature may be a first feature being directly above or obliquely above the second feature, or simply indicating that the first feature is level higher than the second feature. The first feature being "under", "below" and "beneath" the second feature may be the first feature being directly under or obliquely below the second feature, or simply indicating that the first feature is less level than the second feature.

It will be understood that when an element is referred to as being "fixed" or "disposed" on another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and the like are used herein for illustrative purposes only and are not meant to be the only embodiment.

Referring to fig. 1-2, a biopsy needle 100 is provided. In some embodiments, the biopsy needle 100 may be used alone; in some embodiments, the biopsy needle 100 in combination with the sensor 500 forms a biopsy device with a localization function; in some embodiments, the biopsy device is in turn combined with a control device 300, a display device 200, an ultrasound device 700 to form a medical apparatus 1000. The medical device 1000 may be an ultrasound device or an image fusion device.

In some embodiments, the image fusion apparatus further includes a fusion device 400, where the control device 300 is connected to the fusion device 400, and in the process of performing biopsy sampling, magnetic Resonance Imaging (MRI) or Computed Tomography (CT) of the focal position and positioning data of the sensor 500 can be fused in real time by using the fusion device 400, so that the sampling process is visible, and accuracy and efficiency of biopsy sampling are improved.

In some embodiments, the medical device 1000 further comprises a detection and analysis device 600, and after the biopsy needle 100 has completed biopsy sampling, the sample may be directly placed in the detection and analysis device 600 for rapid detection and analysis.

Referring again to fig. 1, the biopsy needle 100 includes a housing assembly, a biopsy needle assembly, a firing key 30, and an anti-false contact 40.

The biopsy needle assembly is arranged in the shell assembly and used for penetrating a focus position for sampling, the firing key 30 is arranged on the shell assembly and used for firing the biopsy needle assembly, the error-preventing contact piece 40 is arranged on the shell assembly and does not extend out of the shell assembly and is used for limiting the firing key 30 to fire the biopsy needle assembly or releasing the firing key 30 and allowing the firing key 30 to fire the biopsy needle assembly.

Further, the anti-false touch has a limit position and a release position, and when the anti-false touch 40 is at the limit position, the anti-false touch 40 prevents the firing key 30 from firing the biopsy needle assembly after winding.

When the anti-false touch member 40 is in the release position, the anti-false touch member 40 avoids the firing key 30 and allows the firing key 30 to fire the biopsy needle assembly after winding.

The anti-false touch piece 40 is arranged on the shell component and does not extend out of the shell component, so that the shell component is skillfully utilized to prevent the anti-false touch piece 40 from being touched by mistake, and further the firing key 30 is prevented from firing the biopsy needle component after winding by mistake. Therefore, after winding and before sampling, the risk that the firing key 30 is wrongly fired can be effectively reduced, so that the risk that the biopsy needle assembly is wrongly fired is reduced, the risk that the biopsy needle 100 accidentally injures doctor-patient personnel or the biopsy needle 100 impacts on-site instrument consumable is reduced, and the use safety of the biopsy needle 100 is improved.

Referring to fig. 3-4 in conjunction with fig. 1, the housing assembly includes an inner housing 11 and an outer housing 12. The inner housing 11 is disposed within the outer housing 12.

Along the direction of the firing of the biopsy needle 100, the inner sidewall of the inner housing 11 is configured with an inner needle seat locking part 111 and an outer needle seat locking part 112 disposed at a certain distance, and the outer needle seat locking part 112 is located in front of the inner needle seat locking part 111.

The biopsy needle 100 further comprises a cocking assembly for controlling the biopsy needle assembly for cocking and comprising an inner needle cocking key 51 and an outer needle cocking key 52.

The biopsy needle assembly comprises an inner needle 21, an inner needle seat 22, an outer needle 23 and an outer needle seat 24, wherein the inner needle 21 is arranged on the hollow part of the outer needle 23 in a penetrating manner, a sampling groove 211 is formed in the position, close to the needle point, of the inner needle 21, and a cutting edge 231 is formed in the needle point of the inner needle 21.

The outer hub 24 is slidably disposed within the inner housing 11 and is configured with an outer needle connecting portion 241, an outer needle upper chord connecting portion 242, and an outer hub snap-in portion 243.

The outer needle connecting portion 241 extends out of the inner housing 11 and is connected to one end of the outer needle 23, the outer needle upper chord connecting portion 242 extends out of the inner housing 11 and is connected to the outer needle upper chord key 52, and the outer needle seat clamping portion 243 can be clamped with the outer needle seat locking portion 112.

The inner hub 22 is slidably disposed within the inner housing 11 and is configured with an inner needle connecting portion 221, an inner needle upper chord connecting portion 222, an inner hub clamping portion 223, and an outer needle firing portion 224.

The inner needle connecting portion 221 extends out of the inner housing 11 to connect with one end of the inner needle 21, and the inner needle upper chord connecting portion 222 extends out of the inner housing 11 to connect with the inner needle upper chord key 51.

The inner needle seat clamping portion 223 may be clamped with the inner needle seat locking portion 111, and the outer needle firing portion 224 is used for firing the outer needle seat clamping portion 243 to be separated from the outer needle seat locking portion 112.

Further, the winding assembly further comprises an inner hub spring 53 and an outer hub spring 54, wherein the inner hub spring 53 is abutted between the inner hub 22 and the inner hub locking portion 111, and the outer hub spring 54 is abutted between the outer hub 24 and the outer hub locking portion 112.

Referring to fig. 5 to 7, in the first embodiment, an installation groove 121 is formed on an outer side wall of the housing 12, and a first yielding hole 1211 is formed in the installation groove 121.

The anti-false touch device 40 includes a first pushing portion 41, a locking portion 42, and a connecting portion 43 connected between the first pushing portion 41 and the locking portion 42.

The first pushing portion 41 is located in the mounting groove 121, the connecting portion 43 is disposed through the first yielding hole 1211, and the locking portion 42 is located between the inner housing 11 and the outer housing 12.

The first pushing portion 41 drives the locking portion 42 to move along the circumferential direction of the biopsy needle 100 under the action of an external force, so that the anti-false touch member 40 is switched between the limit position and the release position.

When the anti-false touch member 40 is at the limit position, the locking portion 42 presses the firing key 30 and prevents the firing key 30 from firing the biopsy needle assembly. When the anti-false touch member 40 is in the release position, the locking portion 42 is clear of the firing key 30 and allows the firing key 30 to fire the biopsy needle assembly.

In the second embodiment, the first pushing portion 41 drives the locking portion 42 to move along the axial direction of the biopsy needle 100 under the action of external force, so that the anti-false touch member 40 is switched between the limit position and the release position.

In the third embodiment, the first pushing portion 41 drives the locking portion 42 to move along a direction deviating from the first angle of the circumferential direction under the action of the external force, so that the anti-error contact element 40 switches between the limit position and the release position, wherein the first angle may be an acute angle or an obtuse angle.

In the fourth embodiment, the anti-false touch member 40 includes a rotation operation portion (not shown), a resisting portion (not shown), and a avoiding portion (not shown), wherein the rotation operation portion is rotatably provided on the outer case 12 so as not to protrude from the outer case 12, and the resisting portion and the avoiding portion are provided between the outer case 12 and the inner case 11.

When the anti-misoperation contact piece 40 is located at the limiting position, the resisting part is used for resisting against the firing key 30 and preventing the firing key 30 from firing the biopsy needle assembly, and when the anti-misoperation contact piece 40 is located at the releasing position, the avoiding part is used for avoiding the firing key 30 and allowing the firing key 30 to fire the biopsy needle assembly.

In the fifth embodiment, the anti-false touch member 40 is of a push-down type (not shown), and the position of the anti-false touch member 40 is switched between the limit position and the release position by pushing the anti-false touch member 40.

Referring to fig. 8-10 in combination with fig. 6-7, in the first embodiment, a first limiting portion 113 and a second limiting portion 114 are formed on an outer side wall of the inner housing 11, and the first limiting portion 113 and the second limiting portion 114 are disposed at intervals along a circumferential direction of the biopsy needle 100.

The anti-false touch member 40 further includes a first limiting plate portion 44, where the first limiting plate portion 44 is disposed on a side of the locking portion 42 opposite to the connecting portion 43, and a third limiting portion 441 is formed on the first limiting plate portion 44.

When the anti-false touch element 40 is located at the limiting position, the third limiting portion 441 and the first limiting portion 113 are limited, and when the anti-false touch element 40 is located at the releasing position, the third limiting portion 441 and the second limiting portion 114 are limited.

In one embodiment, the first limiting portion 113 and the second limiting portion 114 are both limiting protrusions, and the third limiting portion 441 is a limiting groove.

In another embodiment, the first limiting portion 113 and the second limiting portion 114 are both limiting grooves, and the third limiting portion 441 is a limiting protrusion.

In a more specific embodiment, the outer side wall structure of the inner shell 11 is formed with two first limiting portions 113 and two second limiting portions 114, and the upper structure of the first limiting plate portion 44 is formed with two third limiting portions 441.

When the anti-false touch element 40 is at the limiting position, each third limiting portion 441 is respectively limited with a corresponding first limiting portion 113, and when the anti-false touch element 40 is at the releasing position, each third limiting portion 441 is respectively limited with a corresponding second limiting portion 114.

Preferably, two third limiting portions 441 are respectively configured at both ends of the first limiting plate portion 44 in the circumferential direction of the biopsy needle 100.

Referring to fig. 6 again, along the axial direction of the biopsy needle 100, the first limiting plate portion 44 is in a shape of "king" and includes a front plate portion 442, a middle plate portion 443, and a rear plate portion 444 sequentially connected and arranged at intervals, wherein two third limiting portions 441 are respectively configured on the middle plate portion 443.

Therefore, during the position switching process of the anti-false touch element 40, the two third limiting portions 441 slide through protruding from the outer side wall of the inner housing 11, so that the middle plate portion 443 has a force towards the outer side wall of the inner housing 11, and thus the anti-false touch element 40 has a certain resistance during the position switching process, so as to prevent the anti-false touch element 40 from easily sliding on the housing assembly.

Further, the outer sidewall of the inner case 11 is configured with a first guide channel 115 provided along the circumferential direction of the biopsy needle 100, and the first guide channel 115 is used for guiding the first limiting plate portion 44 to slide along the circumferential direction of the biopsy needle 100, so that the false touch preventing member 40 can precisely slide along a preset path in the process of switching positions.

In one embodiment, the outer wall of the inner housing 11 is formed with first and second guide protrusions 1151 and 1152 spaced apart along the axial direction of the biopsy needle 100, the first and second guide protrusions 1151 and 1152 being disposed spaced apart along the axial direction of the biopsy needle 100 and defining the first guide channel 115.

First limiting plate portion 44 is limited between first guide projection 1151 and second guide projection 1152, and slides along the circumferential direction of biopsy needle 100 under the guidance of first guide projection 1151 and second guide projection 1152.

In a specific embodiment, the first and second guiding protrusions 1151 and 1152 limit the sides of the front plate portion 442 and the rear plate portion 444, respectively, such that the anti-false contact will be able to precisely slide along the circumference of the biopsy needle 100.

In another embodiment, the first guide channel 115 may be a limiting sliding groove (not shown) configured on the outer side wall of the inner housing 11, and the first limiting plate portion 44 may be formed with a limiting rib (not shown) corresponding to the limiting sliding groove, and the limiting rib may be inserted into the limiting sliding groove, where the limiting sliding groove may be one or a plurality of limiting sliding grooves.

In other embodiments, the first guide channel 115 may be configured to have a dovetail groove, a ball groove, or the like, and to limit the first limiting plate 44 while ensuring that the first limiting plate 44 can slide in the circumferential direction of the biopsy needle 100.

Further, the anti-false touch device 40 further includes a second limiting plate 45, and the second limiting plate 45 is disposed between the locking portion 42 and the connecting portion 43.

Referring to fig. 11-12, the inner side wall of the housing 12 is configured with a second guiding channel 122 disposed along the circumferential direction of the biopsy needle 100, and the second guiding channel 122 is used for guiding the second limiting plate 45 to slide along the circumferential direction of the biopsy needle 100, so that the anti-false touch element 40 can precisely slide along a preset path in the process of switching positions.

Further, the second guiding channel 122 is a groove formed by recessing the inner sidewall of the housing 12, and one end of the second limiting plate 45 along the thickness direction thereof extends into the second guiding channel 122.

In one embodiment, the second guiding channel 122 is a limiting chute, and the second limiting plate 45 is near one end of the first pushing portion 41, and slides along the circumferential direction of the biopsy needle 100 under the guidance of the limiting chute, where the limiting chute is used for limiting the opposite side of the second limiting plate 45 along the circumferential direction of the biopsy needle 100.

In other embodiments, the second guide channel 122 includes a third guide protrusion (not shown) and a fourth guide protrusion (not shown) that are disposed at intervals along the circumferential direction of the biopsy needle 100, and the second limiting plate portion 45 is limited between the third guide protrusion and the fourth guide protrusion and slides along the circumferential direction of the biopsy needle 100 under the guidance of the third guide protrusion and the fourth guide protrusion.

Referring to fig. 13 in combination with fig. 5, a second abdication hole 1212 is further provided in the mounting groove 121, the firing key 30 includes a second pushing portion 31, an inner needle firing portion 32, and a connecting rod portion 33 connected between the second pushing portion 31 and the inner needle firing portion 32, and the inner needle firing portion 32 is located at the firing end of the biopsy needle assembly.

The second pushing part 31 is located in the mounting groove 121 and can move in the mounting groove 121 along the axial direction of the biopsy needle 100, and the connecting rod part 33 is arranged through the second abdication hole 1212 and can move in the second abdication hole 1212 along the axial direction of the biopsy needle 100.

When the anti-false touch element 40 is at the limit position, the anti-false touch element 40 prevents the connecting rod portion 33 from moving along the axial direction of the biopsy needle 100 through the second pushing portion 31 under the action of external force to drive the inner needle firing portion 32 to move and fire the biopsy needle assembly after winding, and when the anti-false touch element 40 is at the release position, the anti-false touch element 40 avoids the connecting rod portion 33 and allows the second pushing portion 31 to move along the axial direction of the biopsy needle 100 under the action of external force to drive the inner needle firing portion 32 to move and fire the biopsy needle assembly after winding.

Further, the second pushing portion 31 may be located in front of the first pushing portion 41 or may be located behind the first pushing portion 41 in the direction in which the biopsy needle 100 is fired.

By arranging the first pushing part 41 and the second pushing part 31 in the mounting groove 121, an operator can conveniently act on the first pushing part 41 by one hand so that the anti-misoperation member 40 is switched from the limit position to the release position and then acts on the second pushing part 31, and the inner needle firing part 32 fires the biopsy needle assembly.

Further, the link lever portion 33 is configured with a relief notch 3311, and the lock portion 42 is aligned with the relief notch 3311 in the axial direction of the biopsy needle 100 when the false touch preventing member 40 is in the release position.

In one embodiment, the relief notch 3311 is configured as a relief groove formed in an end surface of the connecting rod portion 33, and the locking portion 42 is aligned with the relief groove in the axial direction of the biopsy needle 100 when the anti-false touch member 40 is in the release position.

When the biopsy needle assembly is triggered, the second pushing part 31 drives the triggering part 32 to trigger the biopsy needle assembly through the connecting rod part 33 under the action of external force, and the locking part 42 is positioned in the avoidance groove.

In another embodiment, a limiting stop 3312 is formed on one side of the avoidance gap 3311, and the locking portion 42 abuts against the limiting stop 3312 when the anti-false contact 40 is at the limiting position.

Further, the connecting rod portion 33 includes a first sub-portion 331 and a second sub-portion 332, the first sub-portion 331 is disposed along the axial direction of the biopsy needle 100, and the second sub-portion 332 is disposed through the second abdicating hole 1212 and is connected between the first sub-portion 331 and the second pushing portion 31.

The end of the first sub-portion 331 far away from the inner needle firing portion 32 is configured to form the avoidance notch 3311 and the limit stop portion 3312, and the avoidance notch 3311 and the limit stop portion 3312 are disposed along the circumferential direction of the biopsy needle 100.

When the anti-false touch member 40 is at the limit position, the anti-false touch member 40 abuts against the limit stop portion 3312 and prevents the connecting rod portion 33 from moving along the axial direction of the biopsy needle 100 under the action of the external force through the second pushing portion 31, so that the inner needle firing portion 32 is driven to move to fire the biopsy needle assembly after winding up.

When the anti-false touch member 40 is at the release position, the locking portion 42 is aligned with the avoidance notch 3311 in the axial direction of the biopsy needle 100, so as to avoid the connecting rod portion 33, at this time, the second pushing portion 31 may move along the axial direction of the biopsy needle 100 under the action of external force, and drive the inner needle firing portion 32 to move through the connecting rod portion 33, and fire the biopsy needle assembly after winding up.

By providing the avoidance notch 3311, the movement stroke of the anti-false touch member 40 from the limit position to the release position can be effectively shortened, thereby improving the operation efficiency.

The biopsy needle 100 performs the sampling operation as follows:

pressing the inner needle upper chord key 51 drives the inner needle seat 22 to compress the inner needle seat spring 53 to clamp the inner needle seat clamping portion 223 with the inner needle seat locking portion 111, so that the inner needle 21 is wound.

Pressing the outer needle upper chord key 52 drives the outer needle seat 24 to compress the outer needle seat spring 54 to clamp the outer needle seat clamping portion 243 with the outer needle seat locking portion 112, so that the outer needle 23 is wound.

The first pushing portion 41 is pushed to switch the anti-false touch element 40 from the release position to the limit position, and the limit stop portion 3312 is held and limited by the lock portion 42.

The inner needle 21 and the outer needle 23 after winding are inserted into the vicinity of the lesion position.

Pushing the first pushing portion 41 switches the anti-false touch member 40 from the limit position to the release position, and the locking portion 42 is located at the avoidance notch 3311.

Pushing the second pushing part 31 and driving the inner needle firing part 32 to fire the inner needle seat clamping part 223 to be separated from the inner needle seat locking part 111 through the connecting rod part 33, and driving the inner needle seat 22 to move towards the outer needle seat 24 under the action of the inner needle seat spring 53, so that the part of the inner needle 21 with the sampling groove 211 is penetrated into the focus position.

When the inner needle seat 22 abuts against the outer needle seat locking portion 112, the outer needle firing portion 224 will fire the outer needle seat clamping portion 243 to separate from the outer needle seat locking portion 112, and under the action of the outer needle seat spring 54, the outer needle seat 24 is driven to move towards the focus position direction, so that the outer needle 23 pierces the focus position.

While the sample in the sampling slot 211 is cut by the cutting edge 231 of the outer needle 23 to obtain an independent sample in the sampling slot 211.

Referring to fig. 13, in another aspect, the present application further provides a medical device 1000, where the medical device 1000 includes the biopsy needle 100 according to any one of the embodiments described above.

The medical device 1000 in the present application has the effects of any of the above embodiments, and thus will not be described herein.

The technical features of the above-described embodiments may be arbitrarily combined, and all possible combinations of the technical features in the above-described embodiments are not described for brevity of description, however, as long as there is no contradiction between the combinations of the technical features, they should be considered as the scope of the description.

The above examples only represent a few embodiments of the present application, which are described in more detail and are not to be construed as limiting the scope of the claims. It should be noted that it would be apparent to those skilled in the art that various modifications and improvements could be made without departing from the spirit of the present application, which would be within the scope of the present application. Accordingly, the scope of protection of the present application is to be determined by the claims appended hereto.

Claims

1. A biopsy needle, comprising:

a housing assembly;

a biopsy needle assembly disposed within the housing assembly;

a firing key (30) disposed on the housing assembly; and

the anti-false touch piece (40) is arranged on the shell assembly and does not extend out of the shell assembly, and the anti-false touch piece (40) is provided with a limiting position and a releasing position;

when the anti-misoperation piece (40) is positioned at the limiting position, the anti-misoperation piece (40) prevents the biopsy needle assembly after the firing key (30) fires and is wound, and when the anti-misoperation piece (40) is positioned at the releasing position, the anti-misoperation piece (40) avoids the firing key (30) and allows the firing key (30) to fire and wind the biopsy needle assembly.

2. The biopsy needle according to claim 1, wherein the housing assembly comprises an inner housing (11) and an outer housing (12), the inner housing (11) being arranged in the outer housing (12), an installation groove (121) being arranged in an outer side wall of the outer housing (12), a first yielding hole (1211) being arranged in the installation groove (121);

the anti-false touch piece (40) comprises a first pushing part (41), a locking part (42) and a connecting part (43) connected between the first pushing part (41) and the locking part (42), wherein the first pushing part (41) is positioned in the mounting groove (121), the connecting part (43) penetrates through the first abdication hole (1211), and the locking part (42) is positioned between the inner shell (11) and the outer shell (12);

the first pushing part (41) drives the locking part (42) to move along the circumferential direction of the biopsy needle (100) under the action of external force so as to switch the anti-misoperation piece (40) between the limit position and the release position;

when the anti-misoperation piece (40) is positioned at the limiting position, the locking part (42) presses the firing key (30) and prevents the firing key (30) from firing the biopsy needle assembly, and when the anti-misoperation piece (40) is positioned at the releasing position, the locking part (42) avoids the firing key (30) and allows the firing key (30) to fire the biopsy needle assembly.

3. The biopsy needle according to claim 2, wherein the outer side wall of the inner housing (11) is configured with a first stop portion (113) and a second stop portion (114), the first stop portion (113) and the second stop portion (114) being arranged at intervals along the circumference of the biopsy needle (100);

the anti-false touch piece (40) further comprises a first limiting plate part (44), the first limiting plate part (44) is arranged on one side, opposite to the connecting part (43), of the locking part (42), and a third limiting part (441) is formed on the first limiting plate part (44);

when the anti-misoperation piece (40) is located at the limiting position, the third limiting part (441) and the first limiting part (113) are mutually limited, and when the anti-misoperation piece (40) is located at the releasing position, the third limiting part (441) and the second limiting part (114) are mutually limited.

4. A biopsy needle according to claim 3, wherein the outer side wall of the inner housing (11) is configured with a first guiding channel (115) arranged in the circumferential direction of the biopsy needle (100), the first guiding channel (115) being adapted to guide the first limiting plate portion (44) to slide in the circumferential direction of the biopsy needle (100).

5. The biopsy needle of claim 4, wherein the outer sidewall of the inner housing (11) is configured with a first guide lobe (1151) and a second guide lobe (1152), the first guide lobe (1151) and the second guide lobe (1152) being spaced apart along an axial direction of the biopsy needle (100) and defining the first guide channel (115).

6. The biopsy needle according to claim 2, wherein the anti-false contact (40) further comprises a second limiting plate portion (45), the second limiting plate portion (45) being arranged between the locking portion (42) and the connecting portion (43);

the inner side wall of the housing (12) is configured to form a second guide channel (122), and the second guide channel (122) is used for guiding the second limiting plate part (45) to slide along the circumferential direction of the biopsy needle (100).

7. The biopsy needle according to claim 6, wherein the second guide channel (122) is a groove structure formed by recessing an inner side wall of the housing (12), and wherein one end of the second stopper plate portion (45) in a thickness direction thereof extends into the second guide channel (122).

8. The biopsy needle according to any one of claims 2-7, wherein a second yielding hole (1212) is further provided in the mounting groove (121), the firing key (30) comprises a second pushing portion (31), an inner needle firing portion (32) and a connecting rod portion (33), the connecting rod portion (33) is connected between the second pushing portion (31) and the inner needle firing portion (32), the inner needle firing portion (32) is located at the firing end of the biopsy needle assembly, and the inner needle firing portion (32) is controlled by the second pushing portion (31) and is used for firing the biopsy needle assembly; the second pushing part (31) is positioned in the mounting groove (121), and the connecting rod part (33) is penetrated through the second abdication hole (1212);

when the error contact preventing piece (40) is positioned at the limiting position, the locking part (42) is propped against the connecting rod part (33); when the false touch preventing member (40) is in the release position, the locking portion (42) is prevented from being away from the connecting rod portion (33).

9. The biopsy needle of claim 8, wherein the connecting rod portion (33) is configured with a relief notch (3311) formed therein, the lock portion (42) being aligned with the relief notch (3311) in an axial direction of the biopsy needle when the tamper proof element (40) is in the release position.

10. A medical device comprising the biopsy needle of any one of claims 1-9.