Full-automatic biopsy needle convenient to operate

Abstract

The utility model provides a full-automatic biopsy needle convenient to operate, belongs to the technical field of medical instruments, and particularly comprises a shell, a biopsy needle assembly, a percussion assembly and a trigger assembly. The trigger assembly comprises a rear trigger key, the trigger assembly has an initial position and a trigger position, the rear trigger key is arranged at the tail end of the shell, an opening is formed in the near end of the shell, the rear trigger key is movably assembled at the opening, and the pressing face of the rear trigger key is arranged to be an inclined face. The rear trigger key can be switched between an initial position and a trigger position in the process of moving at the opening, and the pressing surface of the rear trigger key is arranged to be an inclined surface, so that an operator can conveniently touch the rear trigger key and press the rear trigger key when holding the full-automatic biopsy needle for biopsy sampling, and the operation is convenient. And the rear trigger key moves from the initial position to the trigger position, so that the stability of holding the full-automatic biopsy needle by an operator and the accuracy of biopsy sampling are ensured.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of medical devices, in particular to a full-automatic biopsy needle convenient to operate. BACKGROUND

[0002] The full-automatic biopsy needle is an advanced medical device for obtaining tissue samples for pathological detection. Compared with the traditional manual biopsy method, the full-automatic biopsy needle realizes automation in aspects such as injection, sampling and sample delivery, and improves the efficiency and accuracy of biopsy.

[0003] The full-automatic biopsy needle includes a biopsy needle assembly, a handle, a firing device, etc. The biopsy needle assembly is composed of a needle core and a needle tube. The needle tube is used to puncture the human body, and the needle core is used to push the tissue sample into the needle tube during sampling. The firing device is used to control the ejection and sampling actions of the biopsy needle assembly.

[0004] The firing device is usually triggered by a trigger key to perform firing. In the related art, the trigger key is usually arranged at the tail end (the proximal end of the handle) of the handle for an operator to operate. Since the trigger key is located at the tail end and embedded in the handle, it is not convenient for the operator to press it with the thumb while holding the handle, and the operation experience is poor. Even when operating, the palm needs to move backward, and the thumb can only touch the trigger key and press it down. During the movement of the palm backward, the adjustment of the hand position may cause a slight change in the insertion position of the biopsy needle assembly, especially when the hand movement is not stable enough. This change may be more obvious, thereby affecting the accuracy of sampling. SUMMARY

[0005] The present application aims to provide a full-automatic biopsy needle convenient to operate, which aims to solve the technical problem that the trigger key operation is not convenient in the related art, and even affects the accuracy of sampling.

[0006] Additional aspects and advantages of the present application will be set forth in part in the description that follows, and in part will become apparent to those skilled in the art upon examination of the description, or can be learned by practice of the application.

[0007] According to a first aspect of the present application, a full-automatic biopsy needle convenient to operate is provided, comprising:

[0008] a housing, a biopsy needle assembly, a firing assembly, and a trigger assembly;

[0009] The housing forms a handle for an operator to hold;

[0010] The biopsy needle assembly, the firing assembly and the trigger assembly are assembled in the housing;

[0011] The firing assembly is connected with the biopsy needle assembly, and has an energy storage state for retracting the biopsy needle assembly into the housing and a firing state for extending the biopsy needle assembly out of the housing distally;

[0012] The trigger assembly is assembled at the proximal end of the housing and has an initial position and a trigger position for moving distally of the housing to trigger the firing assembly; the trigger assembly comprises a rear trigger key, and the proximal end of the housing is provided with an opening, and the rear trigger key is movably assembled at the opening, and a pressing surface of the rear trigger key is arranged as an inclined surface facing the operator when the operator holds the housing.

[0013] In an exemplary embodiment of the present application, the opening is an inclined opening, and the shape and the inclination angle of the inclined opening match the shape and the inclination angle of the pressing surface of the rear trigger key.

[0014] In an exemplary embodiment of the present application, in the initial position, at least part of the rear trigger key and the pressing surface thereof extend out of the inclined opening.

[0015] In an exemplary embodiment of the present application, the proximal end of the housing comprises a flat portion perpendicular to the axis of the housing and an inclined portion inclined to the axis of the housing, and the inclined opening is provided on the inclined portion.

[0016] In an exemplary embodiment of the present application, the biopsy needle assembly comprises a needle core and a needle tube slidably sleeved outside the needle core, and a sensor assembly channel is formed in the inside of the needle core for an elongated electromagnetic navigation sensor to extend into.

[0017] The biopsy needle assembly is assembled at one side of the flat portion of the housing.

[0018] A connecting through hole is provided on the flat portion, and the connecting through hole is in communication with and is centrally aligned with the sensor assembly channel, and the electromagnetic navigation sensor is adapted to extend into the target position of the sensor assembly channel through the connecting through hole.

[0019] In an exemplary embodiment of the present application, a fixed protection tube is further provided in the housing, and the fixed protection tube is arranged along the axial direction of the needle core and is located on the distal side of the connecting through hole, and the connecting through hole, the fixed protection tube and the center of the sensor assembly channel are centrally aligned.

[0020] In an exemplary embodiment of the present application, the inclination angle of the pressing surface is 20°-30°.

[0021] In an example embodiment of the present application, the rear trigger key is arranged to move linearly along the axis of the housing when switching between the initial position and the trigger position.

[0022] In an example embodiment of the present application, the outer wall of the handle is provided with anti-slip patterns for the operator to hold;

[0023] The pressing surface of the rear trigger key is provided with the anti-slip patterns.

[0024] In an example embodiment of the present application, the anti-slip patterns are arranged on the front and rear outer walls of the handle, and when the operator holds the anti-slip patterns, the pressing surface of the rear trigger key faces the operator.

[0025] The example embodiments of the present application can have the following partial or all beneficial effects:

[0026] The full-automatic biopsy needle provided in the example embodiment of the present application is convenient to operate, which comprises a housing, a biopsy needle assembly, a firing assembly, and a trigger assembly. The firing assembly is connected with the biopsy needle assembly, and has an energy storage state of driving the biopsy needle assembly to retract into the housing and a firing state of driving the biopsy needle assembly to extend outward in the distal direction of the housing. The trigger assembly is assembled at the proximal end of the housing, and has an initial position and a trigger position of moving in the distal direction of the housing to trigger the firing assembly. The trigger assembly comprises a rear trigger key arranged at the proximal side of the housing. An opening is formed at the proximal end of the housing. The rear trigger key is movably assembled at the opening. The pressing surface of the rear trigger key is arranged as an inclined surface facing the operator when the operator holds the housing. The inclined surface can match the pressing direction and angle of the operator, so that the operator can conveniently press the rear trigger key to move the rear trigger key from the initial position to the trigger position when the operator holds the full-automatic biopsy needle to perform biopsy sampling. The palm of the operator does not need to move backward to conveniently press the rear trigger key, which ensures the stability of the operator holding the full-automatic biopsy needle and the accuracy of biopsy sampling.

[0027] It should be understood that the above general description and the following detailed description are only exemplary and explanatory, and cannot limit the present application. BRIEF DESCRIPTION OF DRAWINGS

[0028] The drawings incorporated into the specification and forming a part of the specification, show embodiments consistent with the present application, and together with the specification, serve to explain the principles of the present application. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative labor.

[0029] Figure 1A structure diagram of a full-automatic biopsy needle convenient to operate in the embodiment of the present application is shown;

[0030] Figure 2 A partial exploded view of a full-automatic biopsy needle convenient to operate in the embodiment of the present application is shown;

[0031] Figure 3 A sectional view when the firing assembly is in the energy storage state in the embodiment of the present application is shown;

[0032] Figure 4 A sectional view when the firing assembly is in the energy storage state in the embodiment of the present application is shown; Figure 3 An enlarged view at A in the embodiment of the present application is shown;

[0033] Figure 5 An exploded view of the needle core in the biopsy needle assembly in the embodiment of the present application is shown.

[0034] BRIEF DESCRIPTION OF DRAWINGS

[0035] 1, biopsy needle assembly; 101, needle core; 1011, needle body; 1012, needle tip; 1013, sensor assembly passage; 1014, sampling groove; 102, needle tube;

[0036] 2, housing; 3, rear trigger key; 4, side trigger key; 5, trigger assembly; 6, firing assembly; 7, first inner housing; 8, second inner housing; 9, second pressing key; 10, first pressing key; 11, electromagnetic navigation sensor; 12, connecting through hole; 14, fixed protection tube; 15, trigger connecting rod; 151, elastic fin. DETAILED DESCRIPTION

[0037] Example implementations will now be described more fully with reference to the accompanying drawings. Example implementations may, however, be implemented in many different forms and should not be construed as limited to the implementations set forth herein; rather, these implementations are provided so that this disclosure will be thorough and complete, and will fully convey the inventive concept to those skilled in the art. Like reference numerals refer to like elements throughout the various figures, and thus description of the same will not be repeated. In addition, the drawings are only schematic and are non-limiting.

[0038] Although relative terms such as "upper", "lower", etc. are used herein to describe one component's relationship to another component in the figures, these terms are used herein for ease of description only and are not intended to convey a spatial or positional relationship between the components. It will be understood that if the device in the figures is turned over, the components described as being on "top" of other components would then be oriented on the "bottom", and vice versa. When a structure is "on" or "under" another structure, it can mean that the structure is formed integrally with the other structure or that the structure is "directly" on or under the other structure, or that the structure is "indirectly" on or under the other structure by way of another structure.

[0039] The terms "a", "an", "the" and "at least one" are used to indicate the presence of one or more elements / components / etc.; the terms "including" and "having" are used to express open-ended inclusion and mean that additional elements / components / etc. may be present in addition to the listed elements / components / etc.; the terms "first" and "second" are used only as labels and do not limit the quantity of their objects.

[0040] Example

[0041] This embodiment provides a specific implementation of a fully automatic biopsy needle that is easy to operate, such as Figure 1 、 Figure 2 、 Figure 3 and Figure 4 As shown, it includes a shell, a biopsy needle assembly 1, a firing assembly 6, and a trigger assembly 5. The shell forms a handle that can be held by an operator; the biopsy needle assembly 1, the firing assembly 6, and the trigger assembly 5 are all assembled in the shell, and the firing assembly 6 is connected to the biopsy needle. The firing assembly 6 has an energy storage state that causes the biopsy needle assembly 1 to retract into the shell and a firing state that causes the biopsy needle assembly 1 to extend outward toward the distal end of the shell. When the biopsy needle assembly 1 extends outward toward the distal end of the shell, biopsy sampling can be completed. The trigger assembly 5 has an initial position and a trigger position that moves along the distal end of the shell to trigger the firing assembly 6 to switch from the energy storage state to the firing state. The trigger assembly 5 includes a rear trigger key 3, which is arranged on the proximal side of the shell. An opening is provided at the proximal end of the body, and the rear trigger key 3 is movably assembled at the opening. The pressing surface of the rear trigger key 3 is set to an inclined surface facing the operator when the operator holds the shell, so that when the operator holds the fully automatic biopsy needle for biopsy sampling, the operator can more conveniently touch the rear trigger key 3 and press the rear trigger key 3 to move the rear trigger key 3 from the initial position to the trigger position. The operator can touch the rear trigger key 3 and press it without moving the palm backward, ensuring the stability of the operator holding the fully automatic biopsy needle and the accuracy of the biopsy sampling. At the same time, the pressing surface is set to an inclined surface to match the operator's pressing direction and angle, making it easy for the operator to press the rear trigger key 3.

[0042] Furthermore, the opening at the proximal end of the shell is an inclined opening, and the shape and inclination angle of the inclined opening match the shape of the rear trigger key and the inclination angle of the pressing surface, so that the proximal end of the shell can match the shape of the rear trigger key 3, making it easier for the operator to operate.

[0043] In this embodiment, when the trigger assembly 5 is in the initial position, at least a portion of the rear trigger key 3 and its pressing surface extend out of the inclined opening, further improving the convenience for the operator to reach and press the rear trigger key 3. The operator's thumb does not need to reach into the opening to reach and press the rear trigger key 3.

[0044] In the embodiment, the proximal end of the shell comprises a flat portion and an inclined portion, wherein the flat portion forms a plane perpendicular to the axis of the shell, and the inclined portion forms a plane inclined to the axis of the shell, and the inclined opening of the proximal end of the shell is arranged on the inclined portion, and the pressing surface of the end of the rear trigger key 3 is an inclined surface matching the shape of the opening, which can match the posture of the hand during the operation of the operator, so as to facilitate the operator to press the rear trigger key 3 to move the rear trigger key 3 from the initial position to the trigger position, trigger the firing assembly 6 to enter the firing state, and the needle core and the needle tube are sequentially ejected to complete the biopsy sampling.

[0045] Further, the inclined angle of the pressing surface is 20°-30°, which can match the pressing direction and angle of the thumb of the operator, so as to facilitate the operator to perform the pressing operation.

[0046] In the embodiment, the biopsy needle assembly 1 comprises a needle core 101 and a needle tube 102 slidably sleeved outside the needle core 101, and a hollow sensor assembly channel 1013 is formed in the inside of the needle core 101, which is used for the elongated electromagnetic navigation sensor 11 to extend into, so as to navigate and position the distal end of the needle core 101; wherein the biopsy needle assembly 1 is assembled on one side of the flat portion of the shell, and a connecting through hole 12 is arranged on the flat portion and is in communication with and center-aligned with the sensor assembly channel 1013, and the electromagnetic navigation sensor 11 extends into the target position of the sensor assembly channel 1013 through the connecting through hole 12, so as to navigate and position the distal end of the needle core 101.

[0047] In the embodiment, the fixed protection tube 14 is arranged in the shell and extends along the axis of the needle core. The fixed protection tube 14 is located on the distal side of the connecting through hole 12, and the centers of the connecting through hole 12, the fixed protection tube 14 and the sensor assembly channel 1013 are aligned. Specifically, the proximal end of the fixed protection tube 14 can abut the distal end of the connecting through hole 12, or the proximal end of the fixed protection tube 14 can extend into the connecting through hole 12. When the electromagnetic navigation sensor is assembled, it is guided by the connecting through hole 12 and the fixed protection tube 14 to extend to the target position of the sensor assembly channel. The centers of the connecting through hole 12, the fixed protection tube 14 and the sensor assembly channel 1013 are aligned, so that the elongated electromagnetic navigation sensor 11 can extend to the target position of the sensor assembly channel 1013 in a straight line. When the firing assembly 6 is in the energy storage state, the electromagnetic navigation sensor 11 extends to the target position of the sensor assembly channel 1013 through the connecting through hole 12. When the firing assembly 6 is fired, the position of the electromagnetic navigation sensor 11 remains unchanged. The biopsy needle assembly 1 extends outward in the direction of the distal end of the shell to perform biopsy sampling. During the extension of the biopsy needle assembly 1 in the direction of the distal end of the shell, the sensor assembly channel 1013 slides relative to the electromagnetic navigation sensor 11. The centers of the connecting through hole 12, the fixed protection tube 14 and the sensor assembly channel 1013 are aligned, so as to protect the electromagnetic navigation sensor 11 from damage when the sensor assembly channel 1013 slides relative to the electromagnetic navigation sensor 11.

[0048] In the embodiment, the rear trigger key 3 is arranged to move linearly along the axis of the shell when switching between the initial position and the trigger position, which facilitates the cooperation between parts and the processing and production of parts.

[0049] In other embodiments, the rear trigger key 3 can have a certain angle with the axis of the shell when switching between the initial position and the trigger position. As long as the rear trigger key 3 can trigger the firing assembly 6 during movement, the firing assembly 6 can switch from the energy storage state to the firing state.

[0050] In the embodiment, the shell forms a handle outer wall provided with anti-slip patterns for the operator to hold. The anti-slip patterns can increase the friction between the handle and the operator's palm, so as to facilitate the operator to hold the full-automatic biopsy needle.

[0051] Further, the anti-skid lines are arranged on the front and rear outer walls of the handle, when the operator holds the anti-skid lines, the pressing surface of the rear trigger key 3 faces the operator, the arrangement of the anti-skid lines on the front and rear outer walls of the handle can have a certain indication effect, when the operator holds the anti-skid lines with the palm, the proximal end of the shell naturally faces the operator, the pressing surface of the rear trigger key 3 faces the operator, which is convenient for the operator to press.

[0052] In the embodiment, the shell comprises an outer shell 2 and an inner shell, the inner shell is formed by a first inner shell 7 and a second inner shell 8, the outer shell 2 is sleeved outside the inner shell, the inner shell comprises a firing assembly mounting cavity at the distal end side and a trigger assembly mounting cavity at the proximal end side, and a biopsy needle assembly mounting cavity penetrating through the inner shell and the outer shell 2 at one side of the firing assembly mounting cavity and the trigger assembly mounting cavity, 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; the flat part and the inclined part are arranged at the proximal end of the outer shell, and the proximal end of the outer shell has an obliquely arranged opening.

[0053] In the embodiment, the trigger assembly 5 further comprises a trigger link 15 and elastic fins 151 extending to both sides from the trigger link 15, a blocking wall for resisting the elastic fins 151 is formed in the trigger assembly mounting cavity, the trigger link 15 is connected with the rear trigger key 3, when the rear trigger key 3 moves from the initial position to the trigger position, the trigger link 15 is driven to move from the initial position to the trigger position, the trigger link 15 triggers the firing assembly 6 to switch from the energy storage state to the firing state, when the trigger link 15 moves from the initial position to the trigger position, the blocking wall resists the elastic fins 151 to deform and store energy, after the rear trigger key 3 ends the driving of the trigger link 15, the trigger link 15 drives the rear trigger key 3 to automatically move from the trigger position to the initial position under the deformation recovery of the elastic fins 151, so as to facilitate the automatic biopsy needle to take multiple samples.

[0054] In the embodiment, the rear trigger key 3 and the trigger link 15 are separately arranged, since the rear trigger key 3 needs to be arranged side by side with the connecting through hole 12 on the end face of the proximal end of the shell, the size of the rear trigger key 3 is small, and the rear trigger key 3 has an inclined surface, if the rear trigger key 3 and the trigger link 15 are integrally arranged, it is not easy to demold, and the separate arrangement can better demold and facilitate processing.

[0055] In the embodiment, the side trigger key 4 and the rear trigger key 3 are respectively arranged at the side and the tail end of the handle formed by the shell, and the side trigger key 4 and the rear trigger key 3 are connected through the trigger connecting rod 15, and the side trigger key 4 and the rear trigger key 3 are synchronously moved, no matter which trigger key is pressed by the operator, the other trigger key is synchronously moved, the trigger connecting rod 15 is connected with the third sliding block 51, the side trigger key 4 and the rear trigger key 3 are both connected with the third sliding block 51 through the trigger connecting rod 15, and the trigger connecting rod 15 is slidably arranged in the shell, so that the operator can drive the third sliding block 51 to move from the initial position to the trigger position through the trigger connecting rod 15 no matter whether the side trigger key 4 or the rear trigger key 3 is operated.

[0056] In some embodiments of the application, the fixed protection tube 14 is arranged in the shell and is aligned with the sensor assembly channel 1013, the electromagnetic navigation sensor 11 is guided to extend into the sensor assembly channel 1013 through the fixed protection tube 14, the fixed protection tube 14 passes through the elastic fin 52, the elastic fin 52 is formed with an avoiding hole through which the fixed protection tube 14 passes and which avoids interference with the fixed protection tube 14 when the trigger connecting rod 15 moves, the fixed protection tube 14 is correspondingly arranged from the avoiding hole to the needle body 1011, the diameter of the avoiding hole is slightly larger than the outer diameter of the fixed protection tube 14, so that when the trigger connecting rod 15 slides and drives the elastic fin 52 to deform, the avoiding hole can slightly move on the fixed protection tube 14, the avoiding hole of the elastic fin 52 cannot be tightly sleeved on the fixed protection tube 14 and cannot move, and the sliding of the trigger connecting rod 15 is affected.

[0057] In the embodiment, as shown in FIG. 6, the fixed protection tube 14 is arranged in the shell and is aligned with the sensor assembly channel 1013, the electromagnetic navigation sensor 11 is guided to extend into the sensor assembly channel 1013 through the fixed protection tube 14, the fixed protection tube 14 passes through the elastic fin 52, the elastic fin 52 is formed with an avoiding hole through which the fixed protection tube 14 passes and which avoids interference with the fixed protection tube 14 when the trigger connecting rod 15 moves, the fixed protection tube 14 is correspondingly arranged from the avoiding hole to the needle body 1011, the diameter of the avoiding hole is slightly larger than the outer diameter of the fixed protection tube 14, so that when the trigger connecting rod 15 slides and drives the elastic fin 52 to deform, the avoiding hole can slightly move on the fixed protection tube 14, the avoiding hole of the elastic fin 52 cannot be tightly sleeved on the fixed protection tube 14 and cannot move, and the sliding of the trigger connecting rod 15 is affected. Figure 5As shown, the biopsy needle assembly 1 comprises a needle core 101 and a needle tube 102, the needle core 101 comprises a needle body 1011 and a needle tip 1012, the needle body 1011 is internally formed with a sensor assembly channel 1013 extending along the length direction of the needle body 1011, the electromagnetic navigation sensor 11 can be inserted into the sensor assembly channel 1013 through the proximal end opening of the needle body 1011, so that during the biopsy, the elongated electromagnetic navigation sensor 11 can be inserted from the proximal end 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, so that 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 size relationship between the electromagnetic navigation sensor 11 and the needle tip 1012 and the sampling groove 1014 to accurately calculate the spatial position of the needle tip 1012 and the sampling groove 1014 in the human body, wherein the position of the needle tip 1012 and the sampling groove 1014 can be determined according to its own size and the positional relationship relative to the electromagnetic navigation sensor 11, the navigation device can compensate the data of the needle tip 1012 and the sampling groove 1014 relative to the electromagnetic navigation sensor 11, and then determine the position of the needle tip 1012 according to the position of the electromagnetic navigation sensor 11, and then determine the distance between the needle tip 1012 and the target position through the electromagnetic navigation sensor 11, so as to accurately sample at the target position.

[0058] In the embodiment, the first pressing key 10 and the second pressing key 9 are both slidingly installed in the shell, and at least partially exposed outside the shell, wherein the first pressing key 10 and the second pressing key 9 are both connected with the firing assembly 6, and the operator can control the firing assembly to move into the energy storage state by pressing the first pressing key 10 and the second pressing key 9.

[0059] In the embodiment, the "proximal end" refers to the end close to the operator, and the "distal end" refers to the end away from the operator.

[0060] Other embodiments of the application will be apparent to those skilled in the art from consideration of the specification and practice of the application disclosed herein. It is intended that the specification and examples be considered as exemplary only, with the true scope and spirit of the application being indicated by the following claims.

Claims

1. A fully automatic biopsy needle that is easy to operate, characterized in that: include: Housing, biopsy needle assembly, firing assembly, trigger assembly; The housing forms a handle for an operator to hold; The biopsy needle assembly, firing assembly, and trigger assembly are assembled on the housing; The firing assembly is connected to the biopsy needle assembly, and the firing assembly has an energy storage state in which it drives the biopsy needle assembly to retract into the housing, and a firing state in which it drives the biopsy needle assembly to extend outward toward the distal end of the housing; The trigger assembly is assembled at the proximal end of the shell, and has an initial position and a trigger position that moves toward the distal end of the shell to trigger the firing assembly; the trigger assembly includes a rear trigger key, and the proximal end of the shell is provided with an opening, and the rear trigger key is movably assembled at the opening, and the pressing surface of the rear trigger key is set to be an inclined surface facing the operator when the operator holds the shell.

2. The easy-to-operate fully automatic biopsy needle according to claim 1, characterized in that: The opening is an inclined opening, and the shape and the inclination angle of the inclined opening match the shape of the rear trigger key and the inclination angle of the pressing surface.

3. The easy-to-operate fully automatic biopsy needle according to claim 2, characterized in that: In the initial position, at least a portion of the rear trigger key and its pressing surface extends out of the inclined opening.

4. The easy-to-operate fully automatic biopsy needle according to claim 2, characterized in that: The proximal end portion of the shell includes a flat portion perpendicular to the axis of the shell and an inclined portion inclined to the axis of the shell, and the inclined opening is opened on the inclined portion.

5. The easy-to-operate fully automatic biopsy needle according to claim 4, characterized in that: The biopsy needle assembly includes a needle core and a needle tube slidably sleeved on the outside of the needle core. A hollow sensor assembly channel is formed inside the needle core, and the sensor assembly channel is used for inserting a slender electromagnetic navigation sensor; The biopsy needle assembly is assembled on one side of the flat portion of the housing; A connecting through hole is provided on the flat portion, the connecting through hole is communicated with the sensor assembly channel and the centers thereof are aligned, and the electromagnetic navigation sensor is adapted to extend through the connecting through hole to a target position of the sensor assembly channel.

6. The easy-to-operate fully automatic biopsy needle according to claim 5, characterized in that: It also includes a fixed protection tube, which is arranged in the shell. The fixed protection tube is extended along the axial direction of the needle core and is located on the distal side of the connecting through hole. The centers of the connecting through hole, the fixed protection tube and the sensor assembly channel are aligned.

7. The easy-to-operate fully automatic biopsy needle according to any one of claims 1 to 6, characterized in that: The inclination angle of the pressing surface is 20°-30°.

8. The easy-to-operate fully automatic biopsy needle according to any one of claims 1 to 6, characterized in that: The rear trigger key is configured to move linearly along the axis of the housing when switching between the initial position and the trigger position.

9. The easy-to-operate fully automatic biopsy needle according to any one of claims 1 to 6, characterized in that: The outer wall of the handle is provided with anti-slip grooves for easy gripping by the operator; The anti-slip pattern is provided on the pressing surface of the rear trigger key.

10. The easy-to-operate fully automatic biopsy needle according to claim 9, characterized in that: The anti-slip grooves are provided on the front and rear outer walls of the handle. When the operator holds the handle on the anti-slip grooves, the pressing surface of the rear trigger button faces the operator.

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