CN113288235A

CN113288235A - Full-automatic biopsy needle with safety structure

Info

Publication number: CN113288235A
Application number: CN202110672564.XA
Authority: CN
Inventors: 施灿辉; 承建荣
Original assignee: Changzhou Xin Neng Yuan Medical Stapler Co ltd
Current assignee: Changzhou Xin Neng Yuan Medical Stapler Co ltd
Priority date: 2021-06-17
Filing date: 2021-06-17
Publication date: 2021-08-24

Abstract

The invention relates to a full-automatic biopsy needle with a safety structure, which comprises a needle frame assembly, a cover body assembly and a sleeve assembly, the trigger connecting rod, the trigger button, the bumper bar, sleeve subassembly is arranged in the lid subassembly, the trigger connecting rod sets up so that the trigger connecting rod slides along sleeve subassembly axial between sleeve subassembly outer wall and the lid subassembly inner wall, the trigger button stretches into in the lid subassembly with the front end transmission cooperation of trigger connecting rod, the tail end of trigger connecting rod sets up the bumper bar slot, the rear end of bumper bar slot sets up the bumper bar, the tail end of lid subassembly sets up the bumper bar with the bumper bar looks adaptation's bumper bar slot so that the bumper bar slides along the lid subassembly is radial, the middle part of bumper bar sets up the stroke recess, bumper bar and bumper bar butt during the locking, promote the bumper bar during the unblock and make stroke recess and bumper bar cooperate, the trigger connecting rod realizes the trigger along the stroke recess removal.

Description

Full-automatic biopsy needle with safety structure

Technical Field

The invention relates to the technical field of medical detection equipment, in particular to a full-automatic biopsy needle with a safety structure.

Background

The biopsy needle is a medical appliance, is suitable for kidney, liver, lung, mammary gland, thyroid gland, prostate, pancreas, testis, uterus, ovary, body surface and other organs, and can be used for sampling and sucking cells of centrum tumor, unknown tumor and other living tissues.

Clinically, when examining a patient with a tumor, a biopsy needle is used to remove a certain amount of tissue from the affected site in order to determine the nature of the tumor. The traditional method for biopsy of human tissue in the past is an operative incision method, and the tissue is taken out for biopsy through an operation, and the method has the defects of large wound area, high cost and great pain of patients. In recent years, a biopsy needle is mainly used for tissue biopsy, the biopsy needle comprises a needle body, a needle seat, a needle core and the like, the needle core is inserted into the needle body from the needle seat, the end part of the needle core is provided with a needle groove, the end part of the needle body is made into an inclined plane to form a blade-shaped notch, the biopsy needle is used for taking out tissues, the wound surface is small, the biopsy success rate is high, in the prior art, a patent document with the grant publication number of CN209048193U describes a percutaneous puncture biopsy needle which comprises a needle tube and a needle core and also comprises a handle operation end, the handle operation end comprises an outer shell, an inner sleeve, an anti-error button, a rear-firing button, a left key and a right key, wherein the anti-error button acts on a needle core frame (see the attached figure 5 of the specification), and the anti-error button of the structure is complex in structure and inconvenient to operate.

Disclosure of Invention

The invention aims to provide a full-automatic biopsy needle with a safety structure, which is simple in structure and easy to operate and control.

In order to solve the technical problems, the invention provides a full-automatic biopsy needle with a safety structure, which comprises a needle frame assembly, a cover body assembly, a sleeve assembly, a firing connecting rod, a firing button and a safety rod, wherein the sleeve assembly is arranged in the cover body assembly, the firing connecting rod is arranged between the outer wall of the sleeve assembly and the inner wall of the cover body assembly so as to enable the firing connecting rod to slide along the axial direction of the sleeve assembly, the firing button extends into the cover body assembly to be matched with the front end of the firing connecting rod in a transmission manner, the tail end of the firing connecting rod is provided with a safety rod inserting groove, the rear end of the safety rod inserting groove is provided with the safety block, the tail end of the cover body assembly is provided with the safety inserting groove matched with the safety rod so as to enable the safety rod to slide along the radial direction of the cover body assembly, the middle part of the safety rod is provided with a stroke groove, the safety block is abutted to the safety rod during locking, the safety block is pushed to enable the stroke groove to be matched with the safety block during unlocking, the trigger connecting rod moves along the stroke groove to realize trigger.

Further, the both sides of stroke recess set up the slip table, the slip table is less than the both ends of bumper bar and is higher than the stroke recess to when making the percussion connecting rod locking bumper block and slip table butt, bumper bar removal back stroke recess is arranged in bumper block department.

Furthermore, the inner sides of the two ends of the safety rod are respectively provided with a limiting barrier strip, and the limiting barrier strips are arranged between the safety slots on the two sides of the cover body assembly during assembly, so that the limiting barrier strips are blocked and limited by the inner wall of the cover body assembly when the safety rod moves, and the safety rod is prevented from being separated from the safety slots.

Further, sleeve subassembly is including pegging graft complex location left side sleeve and location right side sleeve, the telescopic outer wall symmetry in location left side sets up the connecting rod stopper, forms the connecting rod spout between two connecting rod stoppers, the anterior and the connecting rod spout sliding fit of percussion connecting rod are led the percussion connecting rod by the connecting rod stopper.

Further, location left side sleeve, location right side sleeve all include semicircular first sleeve section of thick bamboo portion and second sleeve section of thick bamboo portion, and location left side sleeve forms first drum with location right side sleeve grafting cooperation back first sleeve section of thick bamboo, and second sleeve section of thick bamboo portion forms the second drum, and the diameter of first drum is greater than the second drum.

Further, the trigger connecting rod includes the connecting rod body, and the front end of connecting rod body sets up the trigger button draw-in groove, set up button card post on the trigger button, set up the trigger window on the lid subassembly, button card post passes behind the trigger window card and goes into the trigger button draw-in groove to the trigger connecting rod that drives when making the outer trigger button of lid subassembly remove.

Further, the tail end of the connecting rod body is arranged in an L shape, the tail end of the connecting rod body is provided with a sliding support, and a connecting rod slot suitable for the triggering connecting rod to pass through is formed in the first sleeve part, so that the connecting rod body penetrates through the connecting rod slot and then is arranged outside the sleeve assembly.

Further, a needle frame stop block and a connecting rod stop block are arranged in the first sleeve part, a percussion bin is formed between the needle frame stop block and the connecting rod stop block after the left positioning sleeve and the right positioning sleeve are in plug-in fit, and the sliding support is arranged in the percussion bin.

Furthermore, limiting supports are arranged on two sides of the front end of the safety rod inserting groove and arranged between the safety rod inserting groove and the sliding support, and the limiting supports are arranged on the outer side of the connecting rod stop block during assembly.

Further, the lid subassembly includes half-cylinder shape and grafting complex upper cover and lower cover, upper cover and lower cover are gone up and are set up the sleeve spacing groove, the outer wall setting of first sleeve portion and sleeve spacing groove grafting complex spacing post, during the assembly spacing post is arranged in the sleeve spacing inslot for carry out circumference location to sleeve subassembly.

The invention has the technical effects that: (1) compared with the prior art, the biopsy needle has the advantages that the safety rod is arranged at the tail end of the firing connecting rod along the radial direction, so that the firing connecting rod cannot move when the safety rod is locked, and the safety locking function is realized; the safety rod directly limits the stroke of the firing connecting rod, so that the needle frame and the needle tube frame are limited simultaneously, and the safety is higher; (2) sliding tables are arranged on two sides of the stroke groove, so that the safety rod can be conveniently moved and unlocked; (3) the arrangement of the limiting barrier strips is convenient for limiting the bumper bar, and the bumper bar is prevented from being separated from the bumper slot; (4) the two connecting rod limiting blocks form a connecting rod sliding groove, so that the trigger connecting rod can guide when moving.

Drawings

The invention is described in further detail below with reference to the drawings of the specification:

FIG. 1 is a perspective view of a fully automatic biopsy needle with a safety feature;

FIG. 2 is a schematic view of an exploded structure after the cover assembly and the sleeve assembly are separated;

FIG. 3 is a schematic perspective view of the upper cover;

FIG. 4 is a perspective view of the sleeve assembly;

FIG. 5 is a schematic perspective view of the positioning right sleeve;

FIG. 6 is a schematic perspective view of the positioning left sleeve;

FIG. 7 is a perspective view of the firing link;

FIG. 8 is a perspective view of the bumper beam;

FIG. 9 is a perspective view of the assembled firing link, safety lever and firing button;

FIG. 10 is a schematic view of an exploded configuration of the biopsy needle assembly;

FIG. 11 is an exploded view of the biopsy needle assembly;

in the figure:

an upper cover 10, a lower cover 11, a push rod window 12, a firing window 13, a rectangular groove 14, a safety slot 15, a sleeve limiting groove 16,

a left positioning sleeve 20, a right positioning sleeve 21, a needle frame sliding groove 22, a needle frame sliding groove 23, a connecting rod limiting block 24, a needle frame stop block 25, a triggering bin 26, a needle frame stop block 27, a connecting rod stop block 28, a first sleeve barrel part 210, a limiting column 211, a connecting rod slot 212, a second sleeve barrel part 213, a needle frame moving bin 214, a needle frame moving bin 215, a needle frame clamping groove 216 and a needle frame clamping groove 217,

a firing connecting rod 30, a firing button 31, a sliding bracket 32, a limit bracket 33, a rear sealing cover 34, a firing button clamping groove 35, a safety rod inserting groove 36, a safety stop 37, a connecting rod extrusion groove 38, a connecting rod body 39, a button clamping column 311,

a safety lever 40, a travel groove 41, a limit stop 42, a slide 43,

a needle frame 50, a needle frame push rod 51, a needle frame extrusion groove 52, a biopsy needle 53, a needle frame slot 54, a first spring 55, a needle frame buckle 56, a needle frame inserting column 57,

the needle tube rack 60, a needle tube rack push rod 61, a shielding cover 62, a needle tube 63, a needle tube rack slot 64, a second spring 65, a needle tube rack buckle 66 and a needle tube rack inserted column 67.

Detailed Description

Example 1

As shown in fig. 1 to 11, the fully automatic biopsy needle with a safety structure of the present embodiment includes a cover body assembly, a sleeve assembly, a firing link 30, a firing button 31, a safety lever 40, a needle holder assembly and a needle holder assembly; the cover body assembly comprises an upper cover 10 and a lower cover 11 which are semi-cylindrical and matched in an inserted mode, rectangular grooves 14 are symmetrically formed in the front portions of the upper cover 10 and the lower cover 11, second rectangular grooves are symmetrically formed in the tail portions of the upper cover 10 and the lower cover 11, so that the two rectangular grooves 14 form a firing window 13 after the upper cover 10 and the lower cover 11 are inserted, and safety slots 15 are formed in the two second rectangular grooves.

The sleeve subassembly is arranged in the lid subassembly, and the sleeve subassembly is including pegging graft complex location left sleeve 20 and location right sleeve 21, and location left sleeve 20, location right sleeve 21 all include semicircular first sleeve section of thick bamboo 210 and second sleeve section of thick bamboo 213, and location left sleeve 20 forms first drum with location right sleeve 21 grafting cooperation back first sleeve section of thick bamboo 210, and second sleeve section of thick bamboo 213 forms the second drum, and the diameter of first drum is greater than the second drum.

The upper cover 10 and the lower cover 11 are also internally provided with a sleeve limiting groove 16, the outer wall of the first sleeve part 210 is provided with a limiting column 211 which is in splicing fit with the sleeve limiting groove 16, and the limiting column 211 is arranged in the sleeve limiting groove 16 during assembly and is used for circumferentially positioning the sleeve assembly.

The trigger connecting rod 30 is arranged between the outer wall of the sleeve component and the inner wall of the cover component to enable the trigger connecting rod 30 to slide along the axial direction of the sleeve component, the trigger connecting rod 30 comprises a connecting rod body 39, a trigger button clamping groove 35 is arranged at the front end of the connecting rod body 39, a button clamping column 311 is arranged on the trigger button 31, the button clamping column 311 penetrates through the trigger window 13 and then is clamped into the trigger button clamping groove 35, and the trigger button 31 outside the cover component drives the trigger connecting rod 30 to move when moving.

The tail end of the connecting rod body 39 is arranged in an L shape, the tail end of the connecting rod body 39 is provided with the sliding support 32, and the first sleeve part 210 is provided with a connecting rod slot 212 which is suitable for the connecting rod body 39 of the firing connecting rod 30 to pass through, so that the connecting rod body 39 is arranged outside the second sleeve part 213 after passing through the connecting rod slot 212.

A needle frame stop block 25 and a connecting rod stop block 28 are arranged in the first sleeve part 210, a firing bin 26 is formed between the needle frame stop block 25 and the connecting rod stop block 28 after the left positioning sleeve 20 and the right positioning sleeve 21 are in plug fit, the sliding support 32 is arranged in the firing bin 26, and the connecting rod slot 212 is arranged on the side wall of the firing bin 26.

The outer wall of the left positioning sleeve 20 is symmetrically provided with connecting rod limiting blocks 24, a connecting rod sliding groove is formed between the two connecting rod limiting blocks 24, the front part of the firing connecting rod 30 is in sliding fit with the connecting rod sliding groove, and the firing connecting rod 30 is guided by the connecting rod limiting blocks 24.

The tail end of the firing connecting rod 30 is provided with a safety rod slot 36, the rear end of the safety rod slot 36 is provided with a safety stop 37, the safety rod 40 is matched with the safety slot 15 at the tail end of the cover body assembly, so that the safety rod 40 can slide along the radial direction of the cover body assembly, the middle part of the safety rod 40 is provided with a stroke groove 41, the safety stop 37 is abutted against the safety rod 40 during locking, the safety rod 40 is pushed during unlocking, the stroke groove 41 is matched with the safety stop 37, and the firing connecting rod 30 moves along the stroke groove 41 to achieve firing.

The two sides of the front end of the bumper bar slot 36 are provided with limiting brackets 33, the limiting brackets 33 are arranged between the bumper bar slot 36 and the sliding bracket 32, and the limiting brackets 33 are arranged outside the connecting rod stop 28 during assembly.

The rear end of the safety stop 37 is provided with a rear closure 34 for closing the rear end of the cover assembly.

Sliding tables 43 are arranged on two sides of the stroke groove 41, the sliding tables 43 are lower than two ends of the safety rod 40 and higher than the stroke groove 41, the safety rod 40 can slide conveniently, so that the safety stop 37 is abutted against the sliding tables 43 when the firing connecting rod 30 is locked, and the stroke groove 41 is arranged at the safety stop 37 after the safety rod 40 moves.

The inner sides of the two ends of the safety rod 40 are respectively provided with a limiting barrier strip 42, and the limiting barrier strips 42 are arranged between the safety slots 15 on the two sides of the cover body assembly during assembly, so that the limiting barrier strips 42 are blocked and limited by the inner wall of the cover body assembly when the safety rod 40 moves, and the safety rod 40 is prevented from being separated from the safety slots 15.

The needle frame assembly comprises a needle frame 50, a needle frame push rod 51, a biopsy needle 53 and a first spring 55, the needle frame assembly comprises a needle frame 60, a needle frame push rod 61, a shielding cover 62, a needle tube 63 and a second spring 65, the needle frame 60 and the needle frame 50 are arranged in a sleeve assembly consisting of a positioning left sleeve 20 and a positioning right sleeve 21 in a sliding manner, a needle frame sliding groove 22 and a needle frame sliding groove 23 are arranged on the side wall of the sleeve assembly, a needle frame stop 27 is arranged in a second sleeve part 213, the second sleeve part 213 is isolated into a needle frame moving bin 214 and a needle frame moving bin 215 by the needle frame stop 27, the needle frame sliding groove 22 is arranged on one side of the needle frame moving bin 214, and the needle frame sliding groove 23 is arranged on one side of the needle frame moving bin 215;

a push rod window 12 is arranged on one side of the upper cover 10, a shielding cover 62 is fixedly arranged at the front end of the sleeve component, the tail end of a needle tube 63 is fixedly connected with the front end of a needle tube rack 60, the front end of the needle tube 60 extends out of the shielding cover 62 and is matched with the shielding cover 62 in a sliding way, a needle tube rack buckle 66 is arranged at the tail end of the needle tube rack 60, a needle tube rack plunger 67 is convexly arranged on one side of the needle tube rack 60, a needle tube rack push rod 61 is arranged in the push rod window 12 in a sliding way, a needle tube rack slot 64 matched with the needle tube rack plunger 67 is arranged on the needle tube rack push rod 61, so that the needle tube rack plunger 67 passes through a needle tube rack chute 23 and then is matched with the needle tube rack slot 64 in a plugging way, the needle tube rack plunger 61 drives the needle tube rack 60 and the needle tube 63 to move when moving, a needle tube rack clamping groove 217 matched with the needle tube rack buckle 66 is arranged in the middle part of the needle tube rack stop 27, a second spring 65 is arranged between the needle tube rack stop 27 and the needle tube rack 60, so that the needle tube stop 66 moves to the needle tube rack clamping groove 217, the second spring 65 is compressed and the needle cannula 63 and needle holder 60 are loaded.

The tail end of a biopsy needle 53 is fixedly connected with the front end of a needle frame 50, the front end of the biopsy needle 53 extends into a needle tube 63 and is in sliding fit with the needle tube 63, a needle frame buckle 56 is arranged at the tail end of the needle frame 50, a needle frame inserting column 57 is convexly arranged on one side of the needle frame 50, a needle frame pushing rod 51 is arranged in a pushing rod window 12 in a sliding manner, a needle frame inserting groove 54 matched with the needle frame inserting column 57 is arranged on the needle frame pushing rod 51, the needle frame inserting column 57 penetrates through a needle frame sliding groove 22 and then is in inserting fit with the needle frame inserting groove 54, the needle frame pushing rod 51 drives the needle frame 50 and the biopsy needle 53 to move when moving, a needle frame clamping groove 216 matched with the needle frame buckle 56 is arranged in the middle of the needle frame stop block 25, a first spring 55 is arranged between the needle frame stop block 25 and the needle frame 50, the needle frame buckle 56 is arranged in the needle frame 216 when moving, and the first spring 55 is compressed, and the biopsy needle 53 and the needle frame 50 are loaded into the chamber.

The front end of the needle rack 50 is also provided with a conical needle rack extrusion groove 52, so that when the needle rack 50 moves to abut against the needle rack stop block 27, the needle rack buckle 66 is extruded by the needle rack extrusion groove 52, the needle rack buckle 66 is separated from the needle rack clamping groove 217, and the needle rack 60 is triggered by the compressed second spring 66 after being separated from the constraint.

The setting in the middle part of the sliding support 32 of the firing connecting rod 30 and the conical connecting rod extrusion groove 38 of the needle frame buckle 56 looks adaptation, the bumper 40 drives the firing connecting rod 30 to move through the firing button 31 after unlocking, the sliding support 32 moves in the firing bin 26 at this moment, the sliding support 32 moves to when butting with the needle frame stop 25, the needle frame buckle 56 is extruded by the connecting rod extrusion groove 38, the needle frame buckle 56 breaks away from the needle frame clamping groove 216, the needle frame 50 breaks away from the first spring 55 of compressed firing after the constraint, realize that the needle frame 50 moves, and realize the firing to the needle frame 60 by the needle frame 50.

It should be understood that the above examples are only for clearly illustrating the present invention and are not intended to limit the embodiments of the present invention. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. And such obvious variations or modifications which fall within the spirit of the invention are intended to be covered by the scope of the present invention.

Claims

1. A full-automatic biopsy needle with a safety structure comprises a needle frame assembly, a needle frame assembly and is characterized by further comprising a cover body assembly, a sleeve assembly, a trigger connecting rod, a trigger button and a safety rod, wherein the sleeve assembly is arranged in the cover body assembly, the trigger connecting rod is arranged between the outer wall of the sleeve assembly and the inner wall of the cover body assembly to enable the trigger connecting rod to slide axially along the sleeve assembly, the trigger button extends into the cover body assembly to be matched with the front end of the trigger connecting rod in a transmission manner, a safety rod inserting groove is formed in the tail end of the trigger connecting rod, a safety stop block is arranged at the rear end of the safety rod inserting groove, the safety inserting groove matched with the safety rod is formed in the tail end of the cover body assembly to enable the safety rod to slide radially along the cover body assembly, a stroke groove is formed in the middle of the safety rod, the safety stop block is abutted to the safety rod during locking, the safety rod is pushed during unlocking to enable the stroke groove to be matched with the safety stop block, the trigger connecting rod moves along the stroke groove to realize trigger.

2. The fully automatic biopsy needle with the safety structure according to claim 1, wherein sliding tables are arranged on two sides of the stroke groove, the sliding tables are lower than two ends of the safety rod and higher than the stroke groove, so that the safety stop abuts against the sliding tables when the trigger link is locked, and the stroke groove is arranged at the safety stop after the safety rod moves.

3. The biopsy needle with the safety structure of claim 2, wherein the safety rod is provided with a position-limiting barrier at the inner side of each end, and the position-limiting barrier is arranged between the safety slots at the two sides of the cover assembly when assembled, so that the safety rod is stopped and limited by the inner wall of the cover assembly when moving.

4. The fully automatic biopsy needle with the safety structure according to claim 2 or 3, wherein the sleeve assembly comprises a left positioning sleeve and a right positioning sleeve which are in plug fit, the outer wall of the left positioning sleeve is symmetrically provided with connecting rod limiting blocks, a connecting rod sliding groove is formed between the two connecting rod limiting blocks, and the front part of the firing connecting rod is in sliding fit with the connecting rod sliding groove.

5. The fully automatic biopsy needle with the safety structure according to claim 4, wherein the left positioning sleeve and the right positioning sleeve each comprise a first semicircular sleeve part and a second semicircular sleeve part, the first sleeve part forms a first cylinder after the left positioning sleeve and the right positioning sleeve are in plug fit, the second sleeve part forms a second cylinder, and the diameter of the first cylinder is larger than that of the second cylinder.

6. The fully automatic biopsy needle with the safety structure according to claim 5, wherein the trigger link comprises a link body, a trigger button slot is arranged at the front end of the link body, a button clamping column is arranged on the trigger button, a trigger window is arranged on the cover body assembly, and the button clamping column passes through the trigger window and then is clamped into the trigger button slot, so that the trigger button outside the cover body assembly drives the trigger link to move when moving.

7. The fully automatic biopsy needle with the safety structure according to claim 6, wherein the tail end of the connecting rod body is arranged in an L shape, the tail end of the connecting rod body is provided with a sliding support, and the first sleeve portion is provided with a connecting rod slot suitable for the passage of the firing connecting rod, so that the connecting rod body is arranged outside the sleeve assembly after passing through the connecting rod slot.

8. The fully automatic biopsy needle with the safety structure according to claim 7, wherein a needle frame stop and a connecting rod stop are arranged in the first sleeve portion, a firing bin is formed between the needle frame stop and the connecting rod stop after the left positioning sleeve and the right positioning sleeve are in plug fit, and the sliding support is arranged in the firing bin.

9. The biopsy needle with the safety structure of claim 8, wherein the safety lever slot is provided with a limiting bracket at both sides of the front end, the limiting bracket is arranged between the safety lever slot and the sliding bracket, and the limiting bracket is arranged outside the connecting rod stop block during assembly.

10. The fully automatic biopsy needle with a safety structure according to claim 9, wherein the cover assembly comprises an upper cover and a lower cover which are semi-cylindrical and are in plug fit, sleeve limiting grooves are formed in the upper cover and the lower cover, limiting posts which are in plug fit with the sleeve limiting grooves are arranged on the outer wall of the first sleeve part, and the limiting posts are arranged in the sleeve limiting grooves during assembly.