CN223416258U - Full-automatic biopsy needle capable of being matched with coaxial needle for use and full-automatic biopsy needle kit - Google Patents

Abstract

The application provides a full-automatic biopsy needle and a full-automatic biopsy needle kit which can be matched with a coaxial needle for use, and belongs to the technical field of medical appliances, wherein the full-automatic biopsy needle comprises a shell, a firing assembly, a triggering assembly and a biopsy needle assembly; the distal end of the housing has a connection to a coaxial needle from which the distal end of the biopsy needle assembly extends, the connection maintaining the relative position of the housing and the coaxial needle when connected to the coaxial needle. According to the full-automatic biopsy needle capable of being matched with the coaxial needle, the connecting part is arranged at the end part of the shell and can be matched with the coaxial needle, so that after the full-automatic biopsy needle enters the target position through the guidance of the coaxial needle, the full-automatic biopsy needle is matched and connected with the coaxial needle through the connecting part, the relative position of the full-automatic biopsy needle and the coaxial needle is fixed, deviation can not occur relative to the coaxial needle in the sampling process of the full-automatic biopsy needle, and the accuracy of a sampling result is guaranteed.

Description

Full-automatic biopsy needle capable of being matched with coaxial needle for use and full-automatic biopsy needle kit

Technical Field

The application relates to the technical field of medical instruments, in particular to a full-automatic biopsy needle and a full-automatic biopsy needle kit which can be used with a coaxial needle.

Background

A fully automatic biopsy needle is an advanced medical device for obtaining tissue samples for pathology detection. Compared with the traditional manual biopsy mode, the full-automatic biopsy needle realizes automation in the aspects of emission and sampling, and improves the efficiency and accuracy of biopsy.

In biopsy procedures, a fully automatic biopsy needle is sometimes required to be used with a coaxial needle, the coaxial needle is first inserted into human tissue, and the fully automatic biopsy needle is guided into the human tissue by the coaxial needle. However, after the full-automatic biopsy needle in the related art enters human tissue through the coaxial needle, the position of the full-automatic biopsy needle relative to the coaxial needle is not fixed, which may cause deviation in the sampling process of the full-automatic biopsy needle and affect the sampling result.

Disclosure of utility model

The application aims to provide a full-automatic biopsy needle and a full-automatic biopsy needle kit which can be used with a coaxial needle, and aims to solve the problem that the position of the full-automatic biopsy needle relative to the coaxial needle is not fixed in the related art, so that deviation can be generated in the sampling process of the full-automatic biopsy needle, and the sampling result is influenced.

Additional aspects and advantages of the 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 application.

According to a first aspect of the present application there is provided a fully automatic biopsy needle for use with a coaxial needle, comprising:

The biopsy needle comprises a shell, a biopsy needle assembly, a firing assembly and a trigger assembly;

The biopsy needle assembly, the firing assembly and the trigger assembly are assembled to the housing;

The biopsy needle assembly is assembled in the shell, and the distal end extends out of a distal end opening of the shell;

The triggering assembly is connected with the biopsy needle assembly and is provided with an energy storage state for driving the biopsy needle assembly to retract inwards towards the proximal end direction of the shell and a triggering state for driving the biopsy needle assembly to extend outwards towards the distal end direction of the shell under the triggering of the triggering assembly, and the biopsy needle assembly finishes biopsy sampling in the process of switching the energy storage state to the triggering state;

The triggering component is used for triggering the firing component so as to enable the firing component to be switched from the energy storage state to the firing state;

The periphery of the distal end opening of the shell is provided with a connecting part, the distal end of the biopsy needle assembly extends out of the distal end opening of the shell and then penetrates through the connecting part, and the connecting part is used for forming detachable connection with the proximal end part of the coaxial needle.

In an exemplary embodiment of the 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 threaded engagement with the sleeve structure.

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

In an exemplary embodiment of the application, the sleeve structure is formed as a wedge-shaped structure from proximal to distal.

In an exemplary embodiment of the application, the connection is a luer fitting.

In one exemplary embodiment of the application, the biopsy needle assembly comprises a needle core and a needle tube which are sleeved, wherein the needle core comprises a needle point arranged at a distal end and a needle body connected with a proximal end of the needle point and extending towards a proximal end direction of the shell, and a hollow sensor assembly channel is formed in the needle body and used for extending an elongated electromagnetic navigation sensor.

In an exemplary embodiment of the application, a protective sleeve is also included for sheathing over the distal end of the biopsy needle assembly.

In an exemplary embodiment of the application, the connection portion is integrally formed with the housing.

According to a second aspect of the present application, there is also provided a fully automatic biopsy needle kit comprising a fully automatic biopsy needle as described above and a coaxial needle, the proximal end of the coaxial needle forming a detachable connection with the connection of the fully automatic biopsy needle.

Exemplary embodiments of the present application may have some or all of the following advantages:

The full-automatic biopsy needle capable of being used with the coaxial needle comprises a shell, a firing assembly, a triggering assembly and a biopsy needle assembly, wherein the shell forms a handle which is held and operated by a surgical operator, the firing assembly, the triggering assembly and the biopsy needle assembly are assembled in the handle formed by the shell, the firing assembly is connected with the biopsy needle assembly and is provided with an energy storage state for driving the biopsy needle assembly to retract inwards towards the proximal end of the shell, the firing assembly is also provided with a firing state for driving the biopsy needle assembly to extend outwards towards the distal end of the shell under the triggering of the triggering assembly, the firing assembly drives the biopsy needle assembly to finish biopsy sampling in the process of switching the energy storage state to the firing state, the periphery of a distal end opening of the shell is provided with a connecting part, the distal end of the biopsy needle assembly extends out of the distal end opening of the shell and then passes through the connecting part, and the connecting part is used for forming detachable connection with the proximal end of the coaxial needle, so that after the full-automatic biopsy needle enters a target position through the guide of the coaxial needle, the connecting part is matched and connected with the proximal end of the coaxial needle, the full-automatic biopsy needle is enabled to have the same position as that the sampling accuracy of the coaxial needle is ensured, and the relative sampling accuracy and the sampling accuracy of the biopsy needle can not be ensured in the process.

It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the application as claimed.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the application and together with the description, serve to explain the principles of the application. It is evident that the drawings in the following description are only some embodiments of the present application and that other drawings may be obtained from these drawings without inventive effort for a person of ordinary skill in the art.

FIG. 1 is a schematic view showing the structure of a fully automatic biopsy needle used with a coaxial needle according to embodiment 1 of the present application;

FIG. 2 is an exploded view of a portion of a fully automatic biopsy needle that may be used with a coaxial needle in accordance with embodiment 1 of the present application;

Fig. 3 shows an exploded view of the core of a biopsy needle assembly according to an embodiment of the present application.

Reference numerals illustrate:

1. Biopsy needle assembly, 101, needle core, 1011, needle body, 1012, needle tip, 1013, sensor assembly channel, 1014, sampling slot;

2. a housing; 3, a rear trigger key, 4, a side trigger key, 5, a trigger assembly, 6, a firing assembly;

7. A first inner housing; 8, a second inner shell, 9, a connecting part, 10, a protective sleeve, 11, an electromagnetic navigation sensor and 12, anti-skid patterns.

Detailed Description

Example embodiments will now be described more fully with reference to the accompanying drawings. However, the exemplary embodiments can be embodied in many different forms and should not be construed as limited to the embodiments set forth herein, but rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the concept of the exemplary embodiments to those skilled in the art. The same reference numerals in the drawings denote the same or similar structures, and thus detailed descriptions thereof will be omitted. Furthermore, the drawings are merely schematic illustrations of the present application and are not necessarily drawn to scale.

Although relative terms such as "upper" and "lower" are used in this specification to describe the relative relationship of one component of an icon to another component, these terms are used in this specification for convenience only, such as in terms of the orientation of the examples in the drawings. It will be appreciated that if the device of the icon is flipped upside down, the recited "up" component will become the "down" component. When a structure is "on" another structure, it may mean that the structure is integrally formed with the other structure, or that the structure is "directly" disposed on the other structure, or that the structure is "indirectly" disposed on the other structure through another structure.

The terms "a," "an," "the," and "at least one" are used to indicate the presence of one or more elements/components/etc., the terms "comprising" and "having" are intended to be inclusive and mean that there may be additional elements/components/etc., in addition to the listed elements/components/etc., and the terms "first," "second," are used merely as labels, and not as limitations on the number of objects thereof.

Example 1

The embodiment provides a specific implementation mode of a full-automatic biopsy needle capable of being used with a coaxial needle, as shown in fig. 1, 2 and 3, the full-automatic biopsy needle comprises a shell, a firing assembly 6, a triggering assembly 5 and a biopsy needle assembly 1, wherein the shell forms a handle for a user to hold and operate, the firing assembly 6, the triggering assembly 5 and the biopsy needle assembly 1 are all assembled in the handle formed by the shell, the firing assembly 6 is connected with the biopsy needle assembly 1, the firing assembly 6 is provided with an energy storage state for driving the biopsy needle assembly 1 to retract inwards in the proximal end direction of the shell, the firing assembly 6 is also provided with a firing state for driving the biopsy needle assembly 1 to extend outwards in the distal end direction of the shell under the triggering of the triggering assembly 5, the firing assembly 6 drives the biopsy needle assembly 1 to switch from the energy storage state to the firing state, the biopsy needle assembly 1 finishes biopsy sampling, the periphery of the distal end opening of the shell is provided with a connecting part 9, the distal end of the biopsy needle assembly 1 extends out of the distal end opening of the shell through the connecting part 9, the connecting part 9 is used for forming detachable connection with the proximal end of the coaxial needle, the connecting part 9 can be matched with the proximal end of the full-automatic biopsy needle, the full-automatic biopsy needle can be guided by the same position as the full-automatic biopsy needle, and the full-automatic biopsy needle can be accurately matched with the sampling needle, and the position of the full-automatic biopsy needle can be guaranteed, and the position of a sampling needle can be guaranteed, and the sampling needle can be accurately deviated from the position can be guaranteed by the position relative to the sampling needle position by the full-automatic biopsy needle, and the needle can be automatically and the sampling needle.

In some embodiments of the application, the connecting portion 9 is formed as a sleeve structure with an internal thread formed on the inner wall or an external thread formed on the outer wall, and an external thread or an internal thread formed on the proximal end of the coaxial needle for threaded engagement with the sleeve structure. If the inner wall of the sleeve structure is provided with internal threads, the proximal end of the coaxial needle is provided with external threads, the full-automatic biopsy needle can be sleeved on the proximal end of the coaxial needle when guided into a target position by the coaxial needle, and the relative fixation between the sleeve structure and the coaxial needle, namely the relative fixation between the full-automatic biopsy needle and the coaxial needle, can be realized through threaded fit, and the outer wall of the sleeve structure is provided with external threads, and the proximal end of the coaxial needle is provided with internal threads, so that the full-automatic biopsy needle can extend into the proximal end of the coaxial needle when guided into the target position by the coaxial needle, and the relative fixation between the sleeve structure and the coaxial needle, namely the relative fixation between the full-automatic biopsy needle and the coaxial needle, can be realized through threaded fit. The threaded fit structure is simple and easy to operate, and the relative fixation between the full-automatic biopsy needle and the coaxial needle can be realized rapidly.

In other embodiments of the present application, the connecting portion 9 is formed into a sleeve structure, an outer wall or an inner wall of the sleeve structure is provided with an anti-slip structure or an anti-slip layer, and a proximal end portion of the coaxial needle is slidably sleeved on the outer wall or the inner wall of the sleeve structure, and when the full-automatic biopsy needle enters the target position through the coaxial needle, the proximal end portion of the coaxial needle of the sleeve structure is quickly inserted and connected, and relative fixation is realized through the anti-slip structure or the anti-slip layer, so that the operation is simple. The anti-slip structure can be an elastic element, and friction force is generated by utilizing deformation of the elastic element such as a spring, rubber and the like, so that the sleeve structure is prevented from sliding, and the anti-slip layer can be a rubber anti-slip layer or an anti-slip coating anti-slip layer and the like.

Further, the sleeve structure forms a wedge-shaped structure from the proximal end to the distal end to facilitate insertion of the sleeve structure into the proximal end of the coaxial needle.

In this embodiment, the connection part 9 is a luer connector, which is a standardized micro non-seepage connector, and is mainly connected with a matched female luer connector part through a male luer connector, specifically, the connection part 9 can be a male luer connector, and a female luer connector is arranged on a coaxial needle.

In this embodiment, the connecting portion 9 and the housing are integrally formed, so that the processing and production are facilitated. In other embodiments, the connection portion 9 may be connected to the housing by bonding or the like.

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, and an electromagnetic navigation sensor 11 can extend into the sensor assembly channel 1013 through a proximal opening of the needle body 1011, so that during a biopsy operation, the slender electromagnetic navigation sensor 11 can extend from the proximal opening of the needle body 1011 to a distal target position of the needle body 1011, and is close to the position of the needle tip 1012, so that when the biopsy needle is inserted into a human body, an operator can identify the spatial position of the electromagnetic navigation sensor 11 in the human body by using a navigation device, and then accurately calculate the spatial positions of the needle tip 1012 and the sampling groove 1014 in the human body by using the dimensional relationship between the electromagnetic navigation sensor 11 and the needle tip 1012 and the sampling groove 1014 in the biopsy needle assembly 1, wherein the positions of the needle tip 1012 and the sampling groove 1014 can be determined according to the dimensions of the needle tip 11 and the positional relationship with respect to the electromagnetic navigation sensor 11, and the position of the electromagnetic navigation sensor 1014 can be accurately determined between the needle tip 1012 and the position 1012 and the electromagnetic navigation sensor 11 and the position of the needle tip 11. Where "proximal" refers to the end proximal to the operator and "distal" refers to the end distal to the operator.

In this embodiment, the needle cannula is used to complete a sample in cooperation with a sample slot 1014 on the needle tip 1012.

Further, the end of the needle cannula is provided with a circular blade which cooperates with the sampling slot 1014 to separate the tissue sample disposed within the sampling slot 1014 from the tissue cut as the needle cannula slides relative to the needle body 1011 to obtain the tissue sample.

In this embodiment, the needle tip 1012 is detachably connected to the needle body 1011, the needle tip 1012 has a solid structure, and the sampling groove 1014 is provided on the needle tip 1012. Further, an insertion head is provided at the end of the needle 1011, an insertion hole is provided at the end of the needle 1012 to be matched with the insertion head, and the needle 1012 is mounted on the needle 1011 by inserting the insertion head into the insertion hole. Specifically, the plug connector may be a cylinder integrally formed with the needle 1011, the plug hole is a blind hole formed on the needle 1012 and matched with the diameter of the cylinder, and the needle 1012 is connected with the needle 1011 by inserting the cylinder into the blind hole, wherein glue or adhesive can be applied between the cylinder and the blind hole, so that the connection between the needle 1012 and the needle 1011 is firmer.

In this embodiment, the needle core 101 and the needle tube are slidably disposed, the needle tube is slidably sleeved on the outer side of the needle core 101, the needle core 101 and the needle tube sequentially slide, the needle core 101 moves to a target position, tissue at the target position is filled into the sampling groove 1014, the needle tube slides relative to the needle core 101, and the annular blade at the end of the needle tube cuts and separates the tissue located in the sampling groove 1014 from other tissue when passing through the sampling groove 1014 in the sliding process of the needle tube, so as to complete the sampling work.

In this embodiment, the protecting sleeve 10 may be sleeved on the end portions of the needle core 101 and the needle tube, and when the full-automatic biopsy needle is not in use, the protecting sleeve 10 may be sleeved on the end portions of the needle core 101 and the needle tube, so as to protect the end portions of the needle core 101 and the needle tube from damaging the needle tip 1012.

In this embodiment, the casing is including shell 2 and inner shell, and the inner shell is detained by first inner shell 7 and second inner shell 8 and is established and form, and the shell 2 cover is established in the inner shell outside, and the inner shell includes firing subassembly installation cavity and the proximal side of distal end side trigger subassembly installation cavity to and be located firing subassembly installation cavity and trigger subassembly installation cavity one side and run through the biopsy needle subassembly 1 installation cavity of inner shell and shell 2, firing subassembly 6, trigger subassembly 5 and biopsy needle subassembly 1 assemble respectively in firing subassembly installation cavity, trigger subassembly installation cavity and biopsy needle subassembly installation cavity.

Further, the inner shell is including first inner shell 7 and second inner shell 8, first inner shell 7 and second inner shell 8 lock setting, first inner shell 7 and second inner shell 8 are all installed in shell 2, the inner space internal shaping of first inner shell 7 and second inner shell 8 has trigger assembly chamber and percussion assembly chamber, be convenient for rationally utilize shell 2 inner space, assemble through first inner shell 7 and second inner shell 8 and form trigger assembly chamber and percussion assembly chamber, the processing cost to shell 2 has been reduced, also can increase the suitability of shell 2, also can assemble the first inner shell 7 and the second inner shell 8 of other models, in order to install biopsy needle assembly 1 of different specifications.

In this embodiment, the biopsy needle assembly further comprises a firing assembly 6 and a triggering assembly 5, the firing assembly 6 and the triggering assembly are respectively arranged in the firing assembly cavity and the triggering assembly cavity, the firing assembly 6 is connected with the biopsy needle assembly 1, the firing assembly 6 has an energy storage state for enabling the biopsy needle assembly 1 to shrink inwards towards the housing 2, the firing assembly 6 also has a firing state for enabling the needle core 101 and the needle tube in the biopsy needle assembly 1 to sequentially pop out, the firing assembly 6 sequentially drives the needle core 101 and the needle tube to extend outwards towards the far end direction of the housing 2, a time difference exists in the extending process of the needle core 101 and the needle tube, so that biopsy sampling is completed by the needle core 101 and the needle tube, and the triggering assembly 5 can drive the firing assembly 6 to switch from the energy storage state to the firing state.

Further, in this embodiment, the trigger assembly 5 includes a trigger key and a trigger link, the trigger key is installed on the proximal end face of the housing in a pressing manner, the trigger link is installed in the housing and located at one side of the distal end of the trigger key, when the operator presses the trigger key, the trigger key drives the trigger link to move from an initial position to a trigger position, the trigger link moves to the trigger position to trigger the trigger assembly 6, and the trigger assembly 6 is switched from an energy storage state to a trigger state to drive the biopsy needle assembly 1 to extend outwards towards the distal end of the housing for biopsy sampling.

In this embodiment, the trigger key includes a side trigger key 4 and a rear trigger key 3, which are respectively disposed on the side surface and the tail end of the handle formed by the housing 2, the side trigger key 4 and the rear trigger key 3 are connected through a trigger link, the side trigger key 4 and the rear trigger key 3 move synchronously, no matter which trigger key is pressed by the operator, the other trigger key moves synchronously, and the trigger link is slidingly disposed between the housing 2 and the inner housing, so that the operator can trigger the trigger assembly 6 through the trigger link, and the trigger assembly 6 can be switched from the energy storage state to the trigger state no matter whether the operator operates the side trigger key 4 or the rear trigger key 3.

In this embodiment, the surface of the housing is provided with anti-slip patterns 12, which facilitate the hand-held operation of the operator.

Example 2

The embodiment provides a specific implementation manner of a full-automatic biopsy needle kit, which comprises the full-automatic biopsy needle and the coaxial needle in the embodiment 1, wherein the proximal end part of the coaxial needle and the connecting part of the full-automatic biopsy needle form detachable connection, so that the full-automatic biopsy needle and the coaxial needle are relatively fixedly arranged through the matching connection of the connecting part and the proximal end part of the coaxial needle when the full-automatic biopsy needle is matched with the coaxial needle for use.

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. This application is intended to cover any variations, uses, or adaptations of the application following, in general, the principles of the application and including such departures from the present disclosure as come within known or customary practice within the art to which the application pertains. It is intended that the specification and examples be considered as exemplary only, with a true scope and spirit of the application being indicated by the following claims.

Claims (9)

1. A fully automatic biopsy needle for use with a coaxial needle, comprising:

The biopsy needle comprises a shell, a biopsy needle assembly, a firing assembly and a trigger assembly;

The biopsy needle assembly, the firing assembly and the trigger assembly are assembled to the housing;

The biopsy needle assembly is assembled in the shell, and the distal end extends out of a distal end opening of the shell;

The triggering assembly is connected with the biopsy needle assembly and is provided with an energy storage state for driving the biopsy needle assembly to retract inwards towards the proximal end direction of the shell and a triggering state for driving the biopsy needle assembly to extend outwards towards the distal end direction of the shell under the triggering of the triggering assembly, and the biopsy needle assembly finishes biopsy sampling in the process of switching the energy storage state to the triggering state;

The triggering component is used for triggering the firing component so as to enable the firing component to be switched from the energy storage state to the firing state;

The periphery of the distal end opening of the shell is provided with a connecting part, the distal end of the biopsy needle assembly extends out of the distal end opening of the shell and then penetrates through the connecting part, and the connecting part is used for forming detachable connection with the proximal end part of the coaxial needle.

2. The fully automatic biopsy needle of claim 1, wherein the connecting portion is formed as a sleeve structure, wherein the inner wall of the sleeve structure is formed with an internal thread or the outer wall is formed with an external thread, and wherein the proximal end of the coaxial needle is formed with an external thread or an internal thread for threaded engagement with the sleeve structure.

3. The fully automatic biopsy needle of claim 1, wherein the connecting portion is formed into a sleeve structure, an outer wall or an inner wall of the sleeve structure is provided with an anti-slip structure or an anti-slip layer, and a proximal end of the coaxial needle is slidably sleeved on the outer wall or the inner wall of the sleeve structure.

4. A fully automatic biopsy needle for use with a coaxial needle of claim 3, wherein the sleeve structure is formed as a wedge-like structure from proximal end to distal end.

5. The fully automatic biopsy needle for use with a coaxial needle of any one of claims 1-4, wherein the connecting portion is a luer fitting.

6. The fully automatic biopsy needle for use with a coaxial needle of any of claims 1-4, wherein the biopsy needle assembly comprises a sleeve disposed core and needle cannula, the core comprising a distal tip and a needle body coupled to the proximal end of the tip and extending in a proximal direction of the housing, the needle body having a hollow sensor mounting channel formed therein for insertion of an elongated electromagnetic navigation sensor.

7. The fully automatic biopsy needle for use with a coaxial needle of claim 6, further comprising a protective sheath for covering a distal end of the biopsy needle assembly.

8. The fully automatic biopsy needle for use with a coaxial needle of any one of claims 1-4, wherein the coupling portion is integrally formed with the housing.

9. A fully automatic biopsy needle kit comprising a fully automatic biopsy needle according to any one of claims 1-8 and a coaxial needle, the proximal end of the coaxial needle forming a detachable connection with the connection of the fully automatic biopsy needle.