Full-automatic biopsy needle capable of being used in cooperation with coaxial needle and full-automatic biopsy needle kit

Abstract

The utility model provides a full-automatic biopsy needle capable of being used in cooperation with a coaxial needle and a full-automatic biopsy needle suite, and belongs to the technical field of medical instruments, and the full-automatic biopsy needle suite comprises a shell, a percussion assembly, a trigger assembly and a biopsy needle assembly; the far end of the shell is provided with a connecting part connected with a coaxial needle, the far end of the biopsy needle assembly extends out of the connecting part, and when the connecting part is connected to the coaxial needle, the relative position of the shell and the coaxial needle is kept unchanged. According to the full-automatic biopsy needle capable of being used in cooperation with the coaxial needle, the connecting part is arranged at the end of the shell, the connecting part and the coaxial needle can be installed in a matched mode, and after the full-automatic biopsy needle is guided by the coaxial needle to enter a target position, the full-automatic biopsy needle can be used in cooperation with the coaxial needle through matched connection of the connecting part and the coaxial needle; the relative positions of the full-automatic biopsy needle and the coaxial needle are fixed, it is guaranteed that the full-automatic biopsy needle does not deviate relative to the coaxial needle in the sampling process, and the accuracy of the sampling result is guaranteed.

Description

Technical Field

[0001] The present application relates to the technical field of medical devices, and in particular to a fully automatic biopsy needle and a fully automatic biopsy needle kit that can be used in conjunction with a coaxial needle. Background Art

[0002] The fully automatic biopsy needle is an advanced medical device used to obtain tissue samples for pathological testing. Compared to traditional manual biopsy methods, the fully automatic biopsy needle automates the launch and sampling process, improving the efficiency and accuracy of biopsy.

[0003] During a biopsy, a fully automated biopsy needle is sometimes used in conjunction with a coaxial needle. The coaxial needle is first inserted into the tissue, and the fully automated biopsy needle is then guided into the tissue by the coaxial needle. However, in related art, after the fully automated biopsy needle enters the tissue through the coaxial needle, its position relative to the coaxial needle is not fixed, which may cause deviations during the fully automated biopsy needle sampling process and affect the sampling results. Utility Model Content

[0004] The purpose of this application is to provide a fully automatic biopsy needle and a fully automatic biopsy needle kit that can be used in conjunction with a coaxial needle, aiming to solve the problem in the related art that the position of the fully automatic biopsy needle relative to the coaxial needle is not fixed, which may cause deviations in the sampling process of the fully automatic biopsy needle and affect the sampling results.

[0005] Additional aspects and advantages of the present application will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the present application.

[0006] According to a first aspect of the present application, there is provided a fully automatic biopsy needle that can be used in conjunction with a coaxial needle, comprising:

[0007] Housing, biopsy needle assembly, firing assembly, and trigger assembly;

[0008] The biopsy needle assembly, firing assembly and trigger assembly are assembled on the housing;

[0009] The biopsy needle assembly is assembled in the housing and the distal end thereof extends from the distal opening of the housing;

[0010] The firing assembly is connected to the biopsy needle assembly and has an energy storage state in which the biopsy needle assembly is retracted toward the proximal end of the housing, and a firing state in which the biopsy needle assembly is extended toward the distal end of the housing under the triggering of the trigger assembly. During the switching process from the energy storage state to the firing state, the biopsy needle assembly completes biopsy sampling.

[0011] The trigger assembly is used to trigger the firing assembly to switch the firing assembly from the energy storage state to the firing state;

[0012] A connecting portion is provided on the periphery of the distal opening of the shell, and the distal end of the biopsy needle assembly extends from the distal opening of the shell and passes through the connecting portion. The connecting portion is used to form a detachable connection with the proximal end of the coaxial needle.

[0013] In an exemplary embodiment of the present application, the connecting portion is formed as a sleeve structure, the inner wall of the sleeve structure is formed with an internal thread or the outer wall is formed with an external thread, and the proximal end of the coaxial needle is formed with an external thread or an internal thread for threading with the sleeve structure.

[0014] In an exemplary embodiment of the present application, the connecting portion is formed as a sleeve structure, the outer wall or inner wall of the sleeve structure is provided with an anti-slip structure or anti-slip layer, and the proximal end of the coaxial needle is slidably sleeved on the outer wall or inner wall of the sleeve structure.

[0015] In an exemplary embodiment of the present application, the sleeve structure is formed into a wedge-shaped structure from the proximal end to the distal end.

[0016] In an exemplary embodiment of the present application, the connecting portion is a Luer connector.

[0017] In an exemplary embodiment of the present application, the biopsy needle assembly includes a needle core and a needle tube that are sleeved together, the needle core includes a needle tip arranged at the distal end and a needle body connected to the proximal end of the needle tip and extending toward the proximal end of the shell, a hollow sensor assembly channel is formed inside the needle body, and the sensor assembly channel is used for a slender electromagnetic navigation sensor to extend into.

[0018] In an exemplary embodiment of the present application, a protective sleeve is further included, which is used to be sleeved on the distal end of the biopsy needle assembly.

[0019] In an exemplary embodiment of the present application, the connecting portion and the housing are integrally formed.

[0020] According to the second aspect of the present application, a fully automatic biopsy needle kit is also provided, comprising the above-mentioned fully automatic biopsy needle and a coaxial needle, wherein the proximal end of the coaxial needle forms a detachable connection with the connecting portion of the fully automatic biopsy needle.

[0021] The exemplary embodiments of the present application may have some or all of the following beneficial effects:

[0022] The fully automatic biopsy needle provided in the exemplary embodiment of the present application and capable of being used in conjunction with a coaxial needle comprises a shell, a firing assembly, a trigger assembly, and a biopsy needle assembly. The shell forms a handle for the operator to hold and operate. The firing assembly, the trigger assembly, and the biopsy needle assembly are all assembled in the handle formed by the shell, wherein the firing assembly is connected to the biopsy needle assembly, and the firing assembly has an energy storage state for driving the biopsy needle assembly to retract inward toward the proximal end of the shell. The firing assembly also has a firing state for driving the biopsy needle assembly to extend outward toward the distal end of the shell when triggered by the trigger assembly. The firing assembly drives the biopsy needle assembly to retract inward toward the proximal end of the shell. During the process of switching from the energy storage state to the firing state, the biopsy needle assembly completes the biopsy sampling; a connecting portion is provided on the periphery of the distal opening of the shell, and the distal end of the biopsy needle assembly extends from the distal opening of the shell and passes through the connecting portion, and the connecting portion is used to form a detachable connection with the proximal end of the coaxial needle, so that after the fully-automatic biopsy needle enters the target position under the guidance of the coaxial needle, it is connected with the proximal end of the coaxial needle through the connecting portion, so that the relative position of the fully-automatic biopsy needle and the coaxial needle is fixed, ensuring that the fully-automatic biopsy needle will not deviate relative to the coaxial needle during the sampling process, thereby ensuring the accuracy of the sampling results.

[0023] It should be understood that the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] The accompanying drawings are incorporated into and constitute a part of the specification, illustrate embodiments consistent with the present application, and together with the specification, are used to explain the principles of the present application. Obviously, the drawings described below are only some embodiments of the present application, and those skilled in the art can derive other drawings based on these drawings without inventive effort.

[0025] Figure 1 A schematic structural diagram of a fully automatic biopsy needle that can be used in conjunction with a coaxial needle in Example 1 of the present application is shown;

[0026] Figure 2 A partially exploded view of a fully automatic biopsy needle that can be used with a coaxial needle in Example 1 of the present application is shown;

[0027] Figure 3 A schematic diagram of an exploded view of the needle core in the biopsy needle assembly in an embodiment of the present application is shown.

[0028] Description of reference numerals:

[0029] 1. Biopsy needle assembly; 101. Needle core; 1011. Needle body; 1012. Needle tip; 1013. Sensor assembly channel; 1014. Sampling slot;

[0030] 2. Housing; 3. Rear trigger button; 4. Side trigger button; 5. Trigger assembly; 6. Firing assembly;

[0031] 7, first inner housing; 8, second inner housing; 9, connecting portion; 10, protective cover; 11, electromagnetic navigation sensor; 12, non-slip pattern. DETAILED DESCRIPTION

[0032] Example embodiments now will be described more fully hereinafter with reference to the accompanying drawings. Example embodiments, may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein; rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the example embodiments to those skilled in the art. Like reference numerals refer to like elements throughout the specification. Moreover, unless the change of the term clearly dictates otherwise, the use herein of the term "comprising" to describe a structure or product means that the structure or product includes the recited elements, but not excluding others. "Comprising" is to be interpreted as indicating the inclusion of one or more steps, elements, components, or the like, but not excluding others.

[0033] Although relative terms are used herein, such as "upper", "lower", "horizontal", "vertical", "above", and "below", to describe one component's or feature's relationship to another component or feature, these terms are used herein for convenience only and are not to be construed as limiting the scope of example embodiments. It is to be understood that if a component or feature were to be reversed or inverted, then such a reversed or inverted component or feature would not be outside the scope of example embodiments. As used herein, the term "and / or" includes any and all combinations of one or more of the associated listed items. As used herein, the term "including" means "including, but not limited to". As used herein, the term "connected" means "directly or indirectly connected".

[0034] The terms "a", "an", "the" and "at least one" are used to mean one or more elements / components / etc.; the terms "comprises", "comprising", "includes", "including" and the like are used to mean including, but not limited to; the term "first" and "second" are used to denote a first and second element / component / etc. and are not used to denote a quantity of the elements / components / etc.

[0035] Example 1

[0036] This example provides a specific embodiment of a fully automatic biopsy needle that can be used with a coaxial needle, such as Figure 1 , Figure 2 and Figure 3As shown, it includes a shell, a firing assembly 6, a trigger assembly 5, and a biopsy needle assembly 1. The shell forms a handle for the operator to hold and operate. The firing assembly 6, the trigger assembly 5, and the biopsy needle assembly 1 are all assembled in the handle formed by the shell, wherein the firing assembly 6 is connected to the biopsy needle assembly 1, and the firing assembly 6 has an energy storage state for driving the biopsy needle assembly 1 to retract toward the proximal direction of the shell. The firing assembly 6 also has a firing state for driving the biopsy needle assembly 1 to extend toward the distal direction of the shell under the triggering of the trigger assembly 5. The firing assembly 6 drives the biopsy needle assembly 1 to switch from the energy storage state to the firing state. The needle detection assembly 1 completes the biopsy sampling; a connecting portion 9 is provided on the periphery of the distal opening of the shell, and the distal end of the biopsy needle assembly 1 extends from the distal opening of the shell through the connecting portion 9. The connecting portion 9 is used to form a detachable connection with the proximal end of the coaxial needle. The connecting portion 9 can be installed in conjunction with the proximal end of the coaxial needle, so that after the fully automatic biopsy needle enters the target position through the guidance of the coaxial needle, it is connected with the proximal end of the coaxial needle through the connecting portion 9, so that the relative position of the fully automatic biopsy needle and the coaxial needle is fixed, ensuring that the fully automatic biopsy needle will not deviate relative to the coaxial needle during sampling, thereby ensuring the accuracy of the sampling results.

[0037] In some embodiments of the present application, the connecting portion 9 is formed into a sleeve structure, the inner wall of the sleeve structure is formed with an internal thread or the outer wall is formed with an external thread, and the proximal end of the coaxial needle is formed with an external thread or an internal thread for threading with the sleeve structure. If the inner wall of the sleeve structure is formed with an internal thread and the proximal end of the coaxial needle is formed with an external thread, then when the fully automatic biopsy needle enters the target position through the guidance of the coaxial needle, the sleeve structure can be sleeved on the proximal end of the coaxial needle, and the sleeve structure and the coaxial needle are relatively fixed by threading, that is, the fully automatic biopsy needle and the coaxial needle are relatively fixed; or alternatively, the outer wall of the sleeve structure is formed with an external thread and the proximal end of the coaxial needle is formed with an internal thread, and when the fully automatic biopsy needle enters the target position through the guidance of the coaxial needle, the sleeve structure can be extended into the proximal end of the coaxial needle, and the sleeve structure and the coaxial needle are relatively fixed by threading, that is, the fully automatic biopsy needle and the coaxial needle are relatively fixed. The thread matching structure is simple and easy to operate, and can quickly achieve relative fixation between the full-automatic biopsy needle and the coaxial needle.

[0038] In other embodiments of the present application, the connecting portion 9 is formed into a sleeve structure, and the outer wall or inner wall of the sleeve structure is provided with an anti-slip structure or anti-slip layer. The proximal end of the coaxial needle is slidably sleeved on the outer wall or inner wall of the sleeve structure. When the fully automatic biopsy needle enters the target position through the coaxial needle, the proximal end of the sleeve structure and the coaxial needle are quickly connected, and the anti-slip structure or anti-slip layer is used to achieve relative fixation, which is easy to operate. Among them, the anti-slip structure can be an elastic element that uses the deformation of an elastic element such as a spring or rubber to generate friction, thereby preventing the sleeve structure from sliding; the anti-slip layer can be a rubber anti-slip layer or an anti-slip coating anti-slip layer, etc.

[0039] Furthermore, the sleeve structure forms a wedge-shaped structure from the proximal end to the distal end, so as to facilitate the insertion of the sleeve structure into the proximal end of the coaxial needle.

[0040] In this embodiment, the connecting portion 9 is a Luer connector, which is a standardized micro-seepage-free connector, mainly connected by a male Luer connector and a matching female Luer connector. Specifically, the connecting portion 9 can be a male Luer connector, and a female Luer connector is provided on the coaxial needle.

[0041] In this embodiment, the connecting portion 9 is integrally formed with the housing to facilitate processing and production. In other embodiments, the connecting portion 9 can also be connected to the housing by bonding or other methods.

[0042] In this embodiment, the biopsy needle assembly 1 includes a needle core 101 and a needle tube. The needle core 101 includes a needle body 1011 and a needle tip 1012. A sensor assembly channel 1013 extending along the length direction of the needle body 1011 is formed inside the needle body 1011. The electromagnetic navigation sensor 11 can be inserted into the sensor assembly channel 1013 through the proximal opening of the needle body 1011, so that during the biopsy, the slender electromagnetic navigation sensor 11 can be inserted from the proximal opening of the needle body 1011 to the distal target position of the needle body 1011, close to the position of the needle tip 1012. In this way, when the biopsy needle is inserted into the human body, the operator can use the navigation device to identify the spatial position of the electromagnetic navigation sensor 11 in the human body, and then use the electromagnetic navigation sensor 11 to identify the position of the electromagnetic navigation sensor 11 in the human body. The dimensional relationship between the magnetic navigation sensor 11 and the needle tip 1012 and sampling slot 1014 in the biopsy needle assembly 1 accurately calculates the spatial position of the needle tip 1012 and sampling slot 1014 within the human body. The positions of the needle tip 1012 and sampling slot 1014 can be determined based on their own dimensions and their positional relationship relative to the electromagnetic navigation sensor 11. The navigation device can compensate the data of the needle tip 1012 and sampling slot 1014 relative to the electromagnetic navigation sensor 11, and then determine the position of the needle tip 1012 based on the position of the electromagnetic navigation sensor 11. The electromagnetic navigation sensor 11 can then determine the distance between the needle tip 1012 and the target location, allowing for precise sampling at the target location. The term "proximal" refers to the end closest to the operator, and the term "distal" refers to the end farther from the operator.

[0043] In this embodiment, the needle tube is used to cooperate with the sampling groove 1014 on the needle tip 1012 to complete sampling.

[0044] Furthermore, a ring blade is provided at the end of the needle tube. When the needle tube slides relative to the needle body 1011, the ring blade can cooperate with the sampling groove 1014 to cut and separate the tissue sample located in the sampling groove 1014 from the tissue to obtain the tissue sample.

[0045] In this embodiment, the needle tip 1012 is detachably connected to the needle body 1011. The needle tip 1012 is a solid structure, and the sampling slot 1014 is provided on the needle tip 1012. Furthermore, a plug connector is provided at the end of the needle body 1011, and a plug hole is provided at the end of the needle tip 1012 to match the plug connector. The plug connector is inserted into the plug hole to achieve the installation of the needle tip 1012 on the needle body 1011. Specifically, the plug connector can be a cylinder integrally formed with the needle body 1011, and the plug hole is a blind hole provided on the needle tip 1012 that matches the diameter of the cylinder. By inserting the cylinder into the blind hole, the needle tip 1012 is connected to the needle body 1011. Glue or adhesive can be applied between the cylinder and the blind hole to make the connection between the needle tip 1012 and the needle body 1011 more secure.

[0046] In this embodiment, the needle core 101 and the needle tube are slidingly arranged, and the needle tube is slidingly sleeved on the outside of the needle core 101. The needle core 101 and the needle tube slide in sequence. The needle core 101 first moves to the target position, and the tissue at the target position is filled into the sampling groove 1014. The needle tube then slides relative to the needle core 101. During the sliding process of the needle tube, the annular blade at the end thereof cuts and separates the tissue located in the sampling groove 1014 from other tissues when passing through the sampling groove 1014 to complete the sampling work.

[0047] In this embodiment, a protective cover 10 can be placed on the end of the needle core 101 and the needle tube. When the fully automatic biopsy needle is not in use, the protective cover 10 can be placed on the end of the needle core 101 and the needle tube to protect the needle core 101 and the end of the needle tube and avoid damaging the needle tip 1012.

[0048] In this embodiment, the shell includes an outer shell 2 and an inner shell. The inner shell is formed by buckling a first inner shell 7 and a second inner shell 8. The outer shell 2 is mounted on the outside of the inner shell. The inner shell includes a firing assembly mounting cavity on the distal side and a trigger assembly mounting cavity on the proximal side, as well as a biopsy needle assembly 1 mounting cavity located on one side of the firing assembly mounting cavity and the trigger assembly mounting cavity and passing through the inner shell and the outer shell 2. The firing assembly 6, the trigger assembly 5 and the biopsy needle assembly 1 are respectively assembled in the firing assembly mounting cavity, the trigger assembly mounting cavity and the biopsy needle assembly mounting cavity.

[0049] Furthermore, the inner shell includes a first inner shell 7 and a second inner shell 8, which are buckled together and are both installed in the outer shell 2. A trigger assembly assembly cavity and a firing assembly assembly cavity are formed in the internal space of the first inner shell 7 and the second inner shell 8, which facilitates the rational use of the space in the outer shell 2. The trigger assembly cavity and the firing assembly cavity are formed by assembling the first inner shell 7 and the second inner shell 8, which reduces the processing cost of the outer shell 2 and increases the applicability of the outer shell 2. Other models of first inner shells 7 and second inner shells 8 can also be assembled to install biopsy needle assemblies 1 of different specifications and models.

[0050] In this embodiment, a firing assembly 6 and a trigger assembly 5 are further included, which are respectively arranged in the firing assembly assembly chamber and the trigger assembly assembly chamber. The firing assembly 6 is connected to the biopsy needle assembly 1. The firing assembly 6 has an energy storage state that causes the biopsy needle assembly 1 to retract into the shell 2. The firing assembly 6 also has a firing state that causes the needle core 101 and the needle tube in the biopsy needle assembly 1 to pop out in sequence. The firing assembly 6 drives the needle core 101 and the needle tube to extend outward toward the distal end of the shell 2 in sequence, so that there is a time difference in the process of extending the needle core 101 and the needle tube, so that the needle core 101 and the needle tube complete the biopsy sampling; the trigger assembly 5 can drive the firing assembly 6 to switch from the energy storage state to the firing state.

[0051] Furthermore, in this embodiment, the trigger assembly 5 includes a trigger key and a trigger connecting rod. The trigger key can be pressed and installed on the proximal end face of the shell. The trigger connecting rod is installed in the shell and is located on the distal side of the trigger key. When the operator presses the trigger key, the trigger key drives the trigger connecting rod to move from the initial position to the trigger position. When the trigger connecting rod moves to the trigger position, it triggers the firing assembly 6. The firing assembly 6 switches from the energy storage state to the firing state, driving the biopsy needle assembly 1 to extend outward from the distal end of the shell for biopsy sampling.

[0052] In this embodiment, the trigger key includes a side trigger key 4 and a rear trigger key 3, which are respectively arranged on the side and tail end of the handle formed by the outer shell 2. The side trigger key 4 and the rear trigger key 3 are connected by a trigger link. The side trigger key 4 and the rear trigger key 3 move synchronously. No matter which trigger key the operator presses, the other trigger key moves synchronously. The trigger link is slidably arranged between the outer shell 2 and the inner shell, so that no matter whether the operator operates the side trigger key 4 or the rear trigger key 3, the firing assembly 6 can be triggered by the trigger link, so that the firing assembly 6 switches from the energy storage state to the firing state.

[0053] In this embodiment, the surface of the housing is provided with anti-slip grooves 12 to facilitate the operator's hand-held operation.

[0054] Example 2

[0055] This embodiment provides a specific implementation of a fully automatic biopsy needle kit, including the fully automatic biopsy needle and coaxial needle in Example 1, wherein the proximal end of the coaxial needle forms a detachable connection with the connecting portion of the fully automatic biopsy needle, so that when the fully automatic biopsy needle is used in conjunction with the coaxial needle, the connecting portion can be connected to the proximal end of the coaxial needle to ensure that the fully automatic biopsy needle and the coaxial needle are relatively fixed.

[0056] Those skilled in the art will readily appreciate other embodiments of the present invention after considering the specification and practicing the embodiments of the present invention. This application is intended to cover any variations, uses, or adaptations of the present invention that follow the general principles of the present invention and include common knowledge or customary techniques in the art that are not covered by this application. The specification and embodiments are intended to be exemplary only, and the true scope and spirit of the present invention are indicated by the appended claims.

Claims

1. A fully automatic biopsy needle that can be used with a coaxial needle, characterized in that: include: Housing, biopsy needle assembly, firing assembly, and trigger assembly; The biopsy needle assembly, firing assembly and trigger assembly are assembled on the housing; The biopsy needle assembly is assembled in the housing and the distal end thereof extends from the distal opening of the housing; The firing assembly is connected to the biopsy needle assembly and has an energy storage state in which the biopsy needle assembly is retracted toward the proximal end of the housing, and a firing state in which the biopsy needle assembly is extended toward the distal end of the housing under the triggering of the trigger assembly. During the switching process from the energy storage state to the firing state, the biopsy needle assembly completes biopsy sampling. The trigger assembly is used to trigger the firing assembly to switch the firing assembly from the energy storage state to the firing state; A connecting portion is provided on the periphery of the distal opening of the shell, and the distal end of the biopsy needle assembly extends from the distal opening of the shell and passes through the connecting portion. The connecting portion is used to form a detachable connection with the proximal end of the coaxial needle.

2. The fully automatic biopsy needle that can be used in conjunction with a coaxial needle according to claim 1, characterized in that: The connecting portion is formed into a sleeve structure, the inner wall of the sleeve structure is formed with an internal thread or the outer wall is formed with an external thread, and the proximal end of the coaxial needle is formed with an external thread or an internal thread for threading with the sleeve structure.

3. The fully automatic biopsy needle that can be used in conjunction with a coaxial needle according to claim 1, characterized in that: The connecting portion is formed into a sleeve structure, the outer wall or inner wall of the sleeve structure is provided with an anti-slip structure or an anti-slip layer, and the proximal end of the coaxial needle is slidably sleeved on the outer wall or inner wall of the sleeve structure.

4. The fully automatic biopsy needle that can be used in conjunction with a coaxial needle according to claim 3, characterized in that: The sleeve structure is formed into a wedge-shaped structure from the proximal end to the distal end.

5. The fully automatic biopsy needle according to any one of claims 1 to 4, which can be used in conjunction with a coaxial needle, is characterized in that: The connecting portion is a Luer connector.

6. The fully automatic biopsy needle according to any one of claims 1 to 4, which can be used in conjunction with a coaxial needle, is characterized in that: The biopsy needle assembly includes a needle core and a needle tube that are sleeved together. The needle core includes a needle tip arranged at the distal end and a needle body connected to the proximal end of the needle tip and extending toward the proximal end of the shell. A hollow sensor assembly channel is formed inside the needle body, and the sensor assembly channel is used for inserting a slender electromagnetic navigation sensor.

7. The fully automatic biopsy needle that can be used in conjunction with a coaxial needle according to claim 6, characterized in that: The utility model also comprises a protective sleeve for being sleeved on the distal end of the biopsy needle assembly.

8. The fully automatic biopsy needle according to any one of claims 1 to 4, which can be used in conjunction with a coaxial needle, is characterized in that: The connecting portion and the housing are integrally formed.

9. A fully automatic biopsy needle kit, characterized in that: The invention comprises a fully automatic biopsy needle and a coaxial needle according to any one of claims 1 to 8, wherein the proximal end of the coaxial needle forms a detachable connection with the connecting portion of the fully automatic biopsy needle.

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