CN117379114A

CN117379114A - Puncture biopsy locator

Info

Publication number: CN117379114A
Application number: CN202311604779.3A
Authority: CN
Inventors: 谭米多; 唐林; 宋佩馀
Original assignee: Hunan Medical Technology Co ltd
Current assignee: Hunan Medical Technology Co ltd
Priority date: 2023-11-28
Filing date: 2023-11-28
Publication date: 2024-01-12

Abstract

The invention discloses a puncture biopsy locator, which relates to the technical field of medical appliances and comprises: the device comprises an outer cutting needle, an inner needle, a controller and a mark locating clamp, wherein the inner needle is provided with a V-shaped groove penetrating through the two radial sides of the inner needle, the V-shaped groove is provided with a limiting hole, the bottom of the mark locating clamp is provided with a sliding piece, the end part of the sliding piece, which is far away from a puncture end, is provided with an inserting piece, the sliding piece is in sliding fit with the inner wall surface of the V-shaped groove, the inserting piece is inserted into the limiting hole, the mark locating clamp is provided with a V-shaped clamping opening penetrating through the inserting piece downwards, a gap is reserved between the mark locating clamp and the inner needle, and the outer cutting needle pushes the sliding piece from the gap to enable the inserting piece to be separated from the limiting hole; the cutting outer needle pushing plug connector is separated from the limiting hole, so that the marking locating clamp is clamped in the tissue to realize the locating function, namely, the puncture biopsy can be completed by one-time operation of the puncture needle, and meanwhile, the marking locating clamp is reserved in the tissue to realize tumor locating.

Description

Puncture biopsy locator

Technical Field

The invention relates to the technical field of medical instruments, in particular to a puncture biopsy positioner.

Background

In recent years, with the progress of the comprehensive diagnosis and treatment level of breast cancer in China, the treatment of breast surgery has entered into the era of precision and individuation, how to follow the effective principles of minimum injury and minimum operation, further improving the treatment effect, is an important challenge facing the current breast surgery, and for patients, the tumor position is one of the key factors related to success or failure of the operation, and whether the tumor position can be accurately positioned before the operation is particularly important, and the purpose of placing a breast tissue marker in the center of the original tumor position is to not only identify the original tumor position, monitor the change of the tumor size, but also determine the tumor bed for pathological examination, and particularly when the condition of completely relieving the pathology from PCR after the treatment is achieved, the accurate positioning of the residual tumor is an important guarantee for accurately evaluating the curative effect of the pathology.

Before chemotherapy, a puncture needle is often required to be used for performing puncture biopsy, the structure of a common puncture needle in clinic mainly comprises a controller, an inner needle and a cutting outer needle, the outer needle is sleeved outside the inner needle, a groove body is arranged at the end part of the inner needle and is used for accommodating tissues, when the puncture needle is used, the inner needle and the outer needle are inserted into a target position together, the controller controls the inner needle to extend out of the cutting outer needle, then the outer needle is controlled to move forwards to realize the cutting of the tissues, the cut tissues are positioned in the groove body, but the common puncture needle only can perform puncture biopsy of tumor tissues, and has no reserved positioning mark function because of lack of positioning components, a primary tumor center position cannot be effectively found for a patient needing advanced new auxiliary chemotherapy, and a specific reference object is not available after the tumor of the new auxiliary chemotherapy is reduced or completely disappeared; the biopsy conveying device is required to be reused for conveying the tissue marker and completing implantation of the tissue marker for a tiny tumor mass excision operator, so that the patient is subjected to pain caused by invasive operation again, the risk of wound infection and tumor spreading is increased, the medical cost of the patient is increased, and the efficiency of overall treatment is reduced.

Therefore, a puncture biopsy positioner with positioning function, high safety and high treatment efficiency is needed.

Disclosure of Invention

The invention aims to provide a puncture biopsy locator for solving the problems in the prior art, and the puncture biopsy locator can push out a mark locating clip while performing puncture sampling, so that a puncture needle has a locating function, and the puncture biopsy and tumor locating can be completed through one-time operation, thereby improving the efficiency and the safety of the whole treatment.

In order to achieve the above object, the present invention provides the following solutions: the invention provides a puncture biopsy positioner, which comprises a cutting outer needle with a cutting function at the end part, an inner needle with a tissue groove at the puncture end part, and a controller for controlling the cutting outer needle and the puncture inner needle to move.

Preferably, the sliding member, the plug member and the mark positioning clip are integrally provided.

Preferably, the sliding piece is connected with the end part of the mark positioning clamp, which is close to the puncture end of the inner needle, and the connecting part of the sliding piece and the mark positioning clamp is conical.

Preferably, the mark locating clip, the sliding piece and the plug-in piece are made of pure titanium or titanium alloy.

Preferably, the mark locating clip is plate-shaped, and the outer surface of the mark locating clip is arranged smoothly.

Preferably, the inner walls of the two sides of the V-shaped clamping opening are of mutually meshed tooth-shaped structures.

Preferably, the end of the mark locating clip far away from the puncture end is provided with a pulling hole, and a pulling wire for pulling and adjusting the position of the mark locating clip outside the body is arranged in the pulling hole.

Preferably, a deceleration strip for decelerating the advancing speed of the outer cutting needle is arranged on the outer surface of the inner cutting needle corresponding to the mark positioning clamp.

Preferably, the puncture end of the inner needle is detachably provided with a blade.

Preferably, the V-shaped groove and the limiting hole are directly arranged on the inner needle; or the mounting groove is arranged at the position of the inner needle corresponding to the mark positioning clamp, a base is arranged in the mounting groove, the inner side wall of the mounting groove close to the puncture end is in sliding fit with the sliding piece, and one end of the base close to the puncture end is provided with the limiting hole.

Compared with the prior art, the invention mainly achieves the following technical effects:

in the process that the cutting outer needle is pushed to be matched with the inner needle to finish tissue cutting, the cutting outer needle enters a gap between the marking locating clamp and the inner needle and pushes the plug connector to deviate from the limiting hole, the V-shaped clamping opening is lost to be limited and opened after the plug connector deviates, so that the marking locating clamp is clamped in the tissue to realize a locating function, namely, when the puncture biopsy can be finished by one-step operation of the puncture needle, the marking locating clamp is left in the tissue to realize tumor locating, the puncture biopsy and the tumor locating are not required to be divided into two-step operation, the time is saved, the treatment efficiency is improved, and compared with the two-step operation, the wound infection and the tumor spreading risk can be effectively reduced, and the safety is improved.

Compared with the prior art, the other schemes of the invention have the following technical effects:

after the mark positioning clamp is separated from the inner needle, the clamping opening is opened, and the middle occlusal surface of the clamping opening is serrated, so that the tissue at the positioning position can be clamped more firmly, and the mark positioning clamp is not easy to separate.

The smooth plate-shaped design of the mark locating clamp increases the reflecting area of the light source and the sound source, and is convenient for searching under ultrasound and naked eyes even after the mark locating clamp is sprung off in the locating process.

The position of the mark locating clamp can be finely adjusted through the pulling wire, so that the locating accuracy is improved, and the problem of inaccurate locating caused by deeper position of the mark locating clamp due to larger ejection force when the automatic ejection type controller is used is avoided.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions of the prior art, the drawings that are needed in the embodiments will be briefly described below, it being obvious that the drawings in the following description are only some embodiments of the present invention, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

FIG. 1 is a schematic view of the structure of the piercing end of the piercing biopsy instrument of the present invention;

FIG. 2 is an enlarged view of the structure at A in FIG. 1;

FIG. 3 is a schematic view of the structure of the mark positioning clip of the present invention;

FIG. 4 is a schematic view of the structure of the V-shaped groove and the limiting hole of the present invention when the V-shaped groove and the limiting hole are directly arranged on the inner needle;

wherein, 1, cutting the outer needle; 2. an inner needle; 3. marking a positioning clamp; 4. a tissue recess; 5. a V-shaped groove; 6. a limiting hole; 7. a slider; 8. a plug-in component; 9. a V-shaped clamping opening; 10. pulling the hole; 11. a deceleration strip; 12. a blade; 13. a sleeve; 14. a mounting groove; 15. and (5) a base.

Detailed Description

The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.

The invention aims to provide a puncture biopsy locator for solving the problems in the prior art, and the puncture biopsy locator can push out a mark locating clamp when in puncture sampling, so that a puncture needle has a locating function, puncture biopsy and tumor locating are completed through one-time operation, and the efficiency and the safety of integral treatment are improved.

In order that the above-recited objects, features and advantages of the present invention will become more readily apparent, a more particular description of the invention will be rendered by reference to the appended drawings and appended detailed description.

Referring to fig. 1-4, a biopsy needle positioning device is provided, a mark positioning clamp 3 is added relative to a conventional puncture needle, namely, the biopsy needle positioning device integrally comprises a controller, a cutting outer needle 1, an inner needle 2 and the mark positioning clamp 3, the end part of the cutting outer needle 1 is an annular knife with a cutting function, the puncture end part of the inner needle 2 is provided with a tissue groove 4, the cutting outer needle 1 is slidably sleeved outside the inner needle 2, the inner diameter of the cutting outer needle 1 is matched with the outer diameter of the inner needle 2, unlike the conventional puncture needle, the inner needle 2 is provided with a V-shaped groove 5, preferably, the V-shaped groove 5 is arranged opposite to the tissue groove 4, the V-shaped groove 5 penetrates through two radial sides of the inner needle 2, the inner wall surface of the V-shaped groove 5 far away from the puncture end is provided with a limiting hole 6, the bottom of the mark positioning clamp 3 is provided with a sliding piece 7, the sliding part 7 can be of a block structure, the end part of the sliding part 7 far away from the puncture end is provided with a plug part 8, the plug part 8 can be of a plate structure, the surface of the sliding part 7 close to the puncture end is arranged at an acute angle with the mark locating clamp 3, the sliding part 7 is in sliding fit with the inner wall surface of the V-shaped groove 5 close to the puncture end, specifically, the surface of the sliding part 7 close to the puncture end can be a plane or a curved surface with the free end farthest from the mark locating clamp 3 compared with other points, the inner wall surface of the V-shaped groove 5 close to the puncture end is matched with the surface of the sliding part 7 close to the puncture end, the plug part 8 is inserted into the limit hole 6, the mark locating clamp 3 is provided with a V-shaped clamping opening 9 with an opening facing the puncture end, the V-shaped clamping opening 9 downwards penetrates through the sliding part 7 and the plug part 8, the width of the limit hole 6 is the same as that of the plug-in piece 8 when the V-shaped clamping opening 9 is closed, the mark positioning clamp 3, the sliding piece 7 and the plug-in piece 8 are made of pure titanium or titanium alloy, so that the plug-in piece 8 can be combined and inserted into the limit hole 6, the height of the limit hole 6 is larger than the thickness of the plug-in piece 8, the plug-in piece 8 is inserted into the limit hole 6 and is positioned in the lower space of the inner cavity of the limit hole 6, the upper space is the space for the plug-in piece 8 to move upwards when the sliding piece 7 slides forwards, a gap for the cutting outer needle 1 to pass through is arranged between the mark positioning clamp 3 and the inner needle 2, the sliding piece 7 is positioned on the moving path of the cutting outer needle 1, the cutting outer needle 1 pushes the sliding piece 7 to enable the plug-in piece 8 to be separated from the limit hole 6, the end face of the sliding piece 7 close to the plug piece 8 is a vertical plane perpendicular to the axis of the inner needle 2, or is an inclined plane which is closer to the puncture end than the end part far from the axis of the inner needle 2, so that the outer needle 1 can be conveniently cut to move in a pushing mode, the opening length of the V-shaped clamping opening 9 at the free end of the plug piece 8 after the plug piece 8 is separated from the limiting hole 6 is not smaller than the length of a chord line corresponding to the plug piece 8 of the inner needle 2, specifically, taking the plug piece 8 as an example when the plug piece 8 is separated from the top of the cavity in the plug hole, when the plug piece 8 is separated from the inner needle, the V-shaped clamping opening 9 is opened, the opening at the plug piece 8 is a moving opening, at the moment, the chord line length of the inner needle 2 which is opposite to the front of the plug piece 8 is operated is not greater than the length of the moving opening, that is, the forward movement of the plug 8 and the slider 7 is prevented by the movement opening from the inner needle 2 at the front end; in the process that the outer needle 1 is pushed to be matched with the inner needle 2 to finish tissue cutting, the outer needle 1 enters a gap between the marking locating clamp 3 and the inner needle 2 and pushes the plug connector 8 to deviate from the limiting hole 6, the V-shaped clamping opening 9 loses limit and opens after the plug connector 8 deviates, so that the marking locating clamp 3 is clamped in the tissue to realize a locating function, namely, when the puncture biopsy can be finished by one-step operation of the puncture needle, the marking locating clamp 3 is left in the tissue to realize tumor locating, the puncture biopsy and the tumor locating are not required to be divided into two-step operation, the time is saved, the treatment efficiency is improved, and compared with the two-step operation, the wound infection and tumor spreading risk can be effectively reduced, and the safety is improved.

Guide surfaces can be arranged at two side parts of the inner wall surface of the V-shaped groove 5, which is close to the puncturing end, the guide surfaces are inclined surfaces, the two inclined surfaces have a splayed structure with openings facing the puncturing end, and the guide surfaces guide the movement of the plug connector 8 in a resetting way; or the opening length of the V-shaped clamping opening 9 at the free end of the plug connector 8 is larger than the length of the string of the inner needle 2 corresponding to the plug connector 8, so that the situation that the plug connector 8 is out of the limit hole 6 and is deviated in radial position and blocked by the inner needle 2 and cannot advance is prevented.

In order to increase the structural strength, the slider 7, the plug-in connector 8 and the marking clip 3 are integrally provided.

Since the marking locating clip 3 and the sliding member 7 are required to be inserted into tissues in the process of being pushed by the cutting outer needle 1, the joint of the sliding member 7 and the marking locating clip 3 is arranged to be conical, so that the convenience of insertion is improved, the conical structure can be formed by the plane of the marking locating clip 3 and the surface of the inclined sliding member 7 directly, or the front end of the marking locating clip 3 is inclined or bent towards the inner needle 2 and forms a conical structure with the inclined surface of the sliding member 7.

In this embodiment, the width of the sliding member 7 is smaller than the width of the mark positioning clamp 3, and the front end of the mark positioning clamp 3 is also provided with a guide surface having an acute angle with the front end of the mark positioning clamp 3, and the guide surface is a plane or a curved surface with a free end which is farthest from the upper surface of the mark positioning clamp 3 compared with other points.

The middle occlusal surface of the V-shaped clamping opening 9 is serrated, so that the tissue at the positioning position can be clamped more firmly, and the tissue is not easy to fall off.

The mark locating clamp 3 is plate-shaped, the outer surface of the mark locating clamp 3 is smooth, the reflecting area of a light source and a sound source is increased, and the ultrasonic and macroscopic searching is facilitated even after the mark locating clamp is sprung off in the locating process.

Because the controller of pjncture needle has manual controller and automatic control, no matter what kind of controller all needs the control outer needle forward movement, the great circumstances that arouses mark locating clip 3 entering the deep position in the tissue of promotion speed probably can appear for this reason mark locating clip 3 keeps away from the tip of inner needle 2 puncture end is provided with pulling hole 10, be provided with the pulling line in the pulling hole 10, specific pulling line wears to establish in pulling hole 10, through controlling the pulling line at external, realizes pulling adjustment mark locating clip 3 position at external, improves positioning accuracy.

The outer surface of the inner needle 2 corresponding to the marking and positioning clamp 3 can be provided with a deceleration strip 11 for slowing down the advancing speed of the outer cutting needle 1, the deceleration strip 11 can be of a semi-annular protruding structure, the cross section of the semi-annular protruding structure can be semi-circular, the outer diameter of the semi-annular protruding structure is slightly larger than the diameter of the inner needle 2, and at the moment, the inner diameter of the outer cutting needle 1 is ensured to be capable of passing through the deceleration strip 11.

Because the scalpel needs to be used for cutting the incision when performing the puncture biopsy, in order to improve the versatility of the device, the time for searching and taking the scalpel is reduced, the operation efficiency is improved, the blade 12 is detachably arranged at the puncture end of the inner needle 2 in the device, and the specific detachable structure can be as follows: one end of the blade 12 is inserted through the sleeve 13 onto the inner needle 2.

The V-shaped groove 5 and the limit hole 6 can be directly arranged on the inner needle 2; or be provided with mounting groove 14 in the position that the inner needle 2 corresponds mark locating clip 3, be provided with base 15 in the mounting groove 14, can set up the grafting round pin in the bottom of base 15, set up the pinhole in the mounting groove 14, make base 15 directly peg graft in mounting groove 14, the inside wall that mounting groove 14 is close to the puncture end with slider 7 sliding fit, the one end that base 15 is close to the puncture end is provided with spacing hole 6, namely the inside wall that mounting groove 14 is close to the puncture end constitutes V type groove 5 with the terminal surface that base 15 is close to the puncture end.

The arrangement of the base 15 should not affect the movement of the outer cutting needle 1, and the base 15 can be arranged to be spliced with the inner needle 2 to form a cylindrical structure of a complete cylinder; or a cylindrical structure with a rectangular or trapezoid cross section, when the cross section of the base 15 is rectangular, the distance between the corners of the rectangle and the axis of the inner needle 2 should not be larger than the radius of the inner needle 2; or a combination of the two.

The scale marks can be arranged on the outer peripheral walls of the inner needle 2 and the outer cutting needle 1, the scale marks can be of a strip-shaped protruding structure or a strip-shaped recessed structure, and the scale marks can be observed, when the inner cutting needle is actually used, the inner cutting needle 2 extends out of the outer cutting needle 1 in an initial state, therefore, the end part of the outer cutting needle 1 can be controlled at a certain scale value on the inner cutting needle 2 through the controller (the manual controller can be manually adjusted, the automatic controller can determine the extending length of the inner cutting needle 2 during production so as to determine the scale value of the corresponding inner cutting needle 2 in the initial state of the outer cutting needle 1), thus, when the inner cutting needle 2 penetrates into a body, the scale marks on the inner cutting needle 2 can be directly read, and when the inner cutting needle 2 and the outer cutting needle 1 penetrate into the body, the scale values on the outer cutting needle 1 should be read and the scale values of the inner cutting needle 2 corresponding to the outer cutting needle 1 are added.

In the actual use process, the inner needle 2 stretches out of the cutting outer needle 1 to expose the V-shaped groove 5 in the initial state, and is sleeved with the blade 12, when the device comprises the base 15, the base 15 is firstly installed, then the marking locating clamp 3 is inserted into the limiting hole 6 through the plug connector 8, normal operation is started at the moment, the position to be punctured is firstly scratched by the blade 12, the inner needle 2 is inserted into a specified position after the blade 12 is removed, the controller is used for controlling the cutting outer needle 1 to move forwards, enter a gap between the marking locating clamp 3 and the inner needle 2, push the plug connector 8 to be separated from the limiting hole 6, after the plug connector 8 is separated, the limiting hole 6 loses limitation on the left side and the right side of the plug connector 8, the V-shaped clamping opening 9 is self-opened, and is clamped at the specified position to finish positioning; simultaneously, in the forward movement process of the outer cutting needle 1, part of the arrangement is cut and stored in the tissue groove 4 of the inner needle 2, so that the tissue cutting work is completed.

The adaptation to the actual need is within the scope of the invention.

It should be noted that it will be apparent to those skilled in the art that the present invention is not limited to the details of the above-described exemplary embodiments, but may be embodied in other specific forms without departing from the spirit or essential characteristics thereof. The present embodiments are, therefore, to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

The principles and embodiments of the present invention have been described in detail with reference to specific examples, which are provided to facilitate understanding of the method and core ideas of the present invention; also, it is within the scope of the present invention to be modified by those of ordinary skill in the art in light of the present teachings. In view of the foregoing, this description should not be construed as limiting the invention.

Claims

1. The utility model provides a puncture biopsy locator, includes that the tip has the cutting outer needle of cutting function, puncture tip have the tissue recess in the needle and be used for controlling the cutting outer needle with the puncture inner needle carries out the controller that moves, its characterized in that, puncture biopsy locator still includes the mark locating clip that has elasticity from the recovery function, set up V type groove on the inner needle, V type groove runs through the radial both sides of inner needle, set up spacing hole on the inner wall that the puncture tip was kept away from to V type groove, mark locating clip bottom is provided with the slider, the slider is kept away from the tip of puncture tip is provided with the plug connector, the slider be close to the surface of puncture tip with mark locating clip is the acute angle setting, the slider with V type groove is close to the inner wall sliding fit of puncture tip, the plug connector is inserted and is located in the spacing hole, set up the opening towards the V type grip mouth of puncture tip on the mark locating clip, V type grip mouth runs through downwards the slider and plug connector, the width of spacing hole with V type groove is kept away from the tip of cut the plug connector is located in the same when the tip of cut needle is kept away from the plug connector the tip of cut the plug connector has the tip of cut the plug connector is in the tip of cut.

2. The puncture biopsy locator of claim 1, wherein the slider, the plug and the marker locating clip are integrally provided.

3. The puncture biopsy device of claim 2, wherein the slider is coupled to an end of the marker locating clip proximate the puncture end of the inner needle, the slider being tapered at the junction with the marker locating clip.

4. The puncture biopsy locator of claim 1, wherein the marker locating clip, the slider and the plug are made of pure titanium or titanium alloy.

5. The puncture biopsy device of claim 4, wherein the marker locator clip is plate-like, and wherein an outer surface of the marker locator clip is provided smooth.

6. The puncture biopsy device of claim 1, wherein the inner walls of the two sides of the V-shaped clamping opening are in a tooth-like configuration that intermeshes.

7. The puncture biopsy locator of claim 1, wherein the end of the marker locating clip remote from the puncture end is provided with a pull hole, wherein a pull wire for pulling the position of the marker locating clip outside the body is provided in the pull hole.

8. The puncture biopsy locator of claim 7, wherein a deceleration strip is provided on an outer surface of the inner needle corresponding to the marker locating clip for slowing the advancing speed of the outer cutting needle.

9. The piercing biopsy locator of claim 1, wherein the piercing end of the inner needle is removably provided with a blade.

10. The puncture biopsy locator of claim 1, wherein the V-groove and the limiting aperture are disposed directly on the inner needle; or the mounting groove is arranged at the position of the inner needle corresponding to the mark positioning clamp, a base is arranged in the mounting groove, the inner side wall of the mounting groove close to the puncture end is in sliding fit with the sliding piece, and one end of the base close to the puncture end is provided with the limiting hole.