CN111658023A - Peripheral telescopic forceps flap type multifunctional cavity biopsy forceps device - Google Patents

Abstract

The invention relates to the field of medical instruments, in particular to a peripheral telescopic clamp flap type multifunctional cavity biopsy forceps device; the invention comprises a handle, an outer sleeve, a hinge joint and biopsy forceps which are connected in sequence, wherein a pushing mechanism is arranged in the biopsy forceps, penetrates through the outer sleeve and is connected with a sliding handle, and the sliding handle can drive the pushing mechanism to move so as to expand the biopsy forceps; a shearing mechanism is also arranged in the biopsy forceps, a pressing elastic mechanism is arranged on the handle, and the pressing elastic mechanism can drive the shearing mechanism to cut the biopsy tissue on the side wall of the blood vessel; in the invention, the pushing mechanism is driven to move by sliding the sliding handle, so that the biopsy forceps are unfolded, the pressing elastic mechanism is pressed, and the shearing mechanism is driven to cut the biopsy tissue on the side wall of the blood vessel, therefore, the operation is convenient, the practicability is strong, and the safety factor is high.

Description

Circumferential retractable forceps flap type multifunctional lumen biopsy forceps device

technical field

The invention relates to the field of medical instruments, in particular to a circumferential telescopic forceps valve type multifunctional cavity biopsy forceps device.

Background technique

Biopsy forceps is one of the most important and commonly used tools in the diagnosis and treatment of modern interventional departments. It is used to obtain biopsy samples in various lumens such as blood vessels, bile ducts, and common hepatic ducts to provide pathological basis for diagnosis. It has long been considered the "gold standard" for tumor diagnosis.

In the biopsy tissue sampling operation of the inner wall of the blood vessel, biopsy sampling is also required by biopsy forceps. However, in the actual operation process, the existing biopsy forceps have the following defects:

1. During routine biopsy operations, for biopsy tissue that is not easy to fall off, simply taking biopsy with biopsy forceps is very likely to cause large-scale tearing of the tissue, causing a series of subsequent reactions such as inflammation and infection. Randomly searching for biopsies that are easy to fall off may not be able to be found smoothly, and it takes a lot of time, which is a waste of manpower for doctors, and prolongs the operation time of patients, which is also a torment for patients.

2. At present, there are high-frequency thermal biopsy forceps on the market. The biopsy tissue is excised and clipped by high-frequency electric cutting. This method has the effect of excising tissue to a certain extent, but the use of high-frequency electric cutting will cause certain damage to the tissue. The scorching effect of the biopsies can kill the activity of the biopsy tissue. At the same time, the charred biopsy tissue residue will remain at the jaws of the biopsy forceps, which is very difficult to remove and inconvenient to clean.

3. In the existing biopsy forceps, a pipeline is set inside the biopsy forceps tube to infuse the medicine solution into the biopsy forceps and the tissue area, which cannot replicate the treatment effect on the internal tissues of the lumen.

SUMMARY OF THE INVENTION

In order to solve the above problems, the purpose of the present invention is to provide a circumferentially retractable forceps flap type multifunctional cavity biopsy forceps device, which drives the pushing mechanism to move by sliding the sliding handle, so that the biopsy forceps is unfolded, and then the pressing elastic mechanism is pressed. By pressing, the cutting mechanism is driven to cut the biopsy tissue of the side wall of the blood vessel, and the operation is convenient.

The purpose of this invention is to realize through the following technical solutions:

The invention provides a circumferential telescopic forceps flap type multifunctional cavity biopsy forceps device, which comprises a handle, an outer sleeve, an articulated head and a biopsy forceps which are connected in sequence, and the biopsy forceps are provided with a top for opening the biopsy forceps. Pushing mechanism, the pushing mechanism is connected with the sliding handle arranged on the handle through the outer sleeve, and the sliding handle can drive the pushing mechanism to move to make the biopsy forceps unfold; The shearing mechanism is provided with a pressing elastic mechanism on the handle, the pressing elastic mechanism is connected with the shearing mechanism, and the pressing elastic mechanism can drive the shearing mechanism to cut the biopsy tissue of the blood vessel side wall.

As an improvement of the present invention, the biopsy forceps is hinged on the hinge joint, and the biopsy forceps includes a first forceps flap and a second forceps flap. The first forceps flap and the second forceps flap are both provided with an abdication opening, and the first forceps flap And the edges of the second clamp petal are provided with evenly arranged sawtooth.

As a further improvement of the present invention, an annular groove is arranged at the root of the first jaw and the second jaw, and an elastic tightening band is arranged in the annular groove.

As a further improvement of the present invention, the pushing mechanism includes a wedge block, a wedge head and a push-pull bar, the wedge block is open, and the wedge head is connected to the sliding handle through the push-pull bar through the wedge block.

As a further improvement of the present invention, the shearing mechanism includes a fixed frame piece, a gear fixed piece and a gear drive frame, the fixed frame piece includes a left frame piece and a right frame piece, and the left frame piece and the right frame piece are respectively connected with the left rotary knife, The right rotary knife is connected, the left rotary knife and the right rotary knife are both provided with a wide side section and a narrow side section, the wide side section is provided with a serrated edge for cutting, and the narrow side section is provided with an arc-shaped rack The gear fixing plate is hinged with gears, and the gears are respectively meshed and connected with the gear drive frame and the arc-shaped rack.

As a further improvement of the present invention, both the left frame piece and the right frame piece are provided with guide blocks, the left and right rotary knives are provided with guide grooves, and the guide blocks are stuck in the guide grooves.

As a further improvement of the present invention, the gear drive frame is provided with a gear sliding port meshingly connected with the gear, one side of the gear sliding port is provided with a rack, the other side of the gear sliding port is provided with a guide bar, and the gear is provided with a useful Circumferential guide groove into which the guide bar is snapped.

As a further improvement of the present invention, the gear drive frame is connected with the movable push-pull bar, and the movable push-pull bar passes through the outer sleeve and presses the elastic mechanism.

As a further improvement of the present invention, the pressing elastic mechanism includes a fixed casing, a sliding block, a pressing piece and a top flap, a sliding groove is arranged on the outer sleeve, the fixing casing is connected in the sliding groove, a top plate is arranged in the fixed casing, and the sliding block is connected to the sliding groove. A spring is arranged between the top plates, the pressing sheet is hinged with the top flap, and the top flap is connected with the sliding block.

As a further improvement of the present invention, it also includes a liquid-passing mechanism for transporting medicinal liquid. The liquid-passing mechanism includes an inner sleeve and a guide wire. The outer sleeve and the hinge head are provided with a circular hole channel, and an inner hole is arranged in the circular hole channel. The cannula, the guide wire is introduced into the inner cannula.

In the present invention, by sliding the sliding handle, the pushing mechanism is driven to move, so that the biopsy forceps is unfolded, and then the pressing elastic mechanism is pressed to drive the shearing mechanism to cut the biopsy tissue of the blood vessel side wall, which is convenient to operate, has strong practicability and is safe. The coefficient is also high.

Description of drawings

The accompanying drawings described herein are used to provide a further understanding of the present invention and constitute a part of the present application. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention. In the attached image:

Fig. 1 is the structural representation of the present invention;

Fig. 2 is the structural representation one of biopsy forceps of the present invention;

Fig. 3 is the structural representation two of biopsy forceps of the present invention;

Fig. 4 is the structural representation three of biopsy forceps of the present invention;

Fig. 5 is the exploded schematic diagram one of biopsy forceps of the present invention;

Fig. 6 is the exploded schematic diagram two of biopsy forceps of the present invention;

7 is a schematic structural diagram 1 of the shearing mechanism of the present invention;

Fig. 8 is the structural representation 2 of the shearing mechanism of the present invention;

9 is a schematic structural diagram three of the shearing mechanism of the present invention;

Figure 10 is a schematic diagram 1 of the connection between the gear and the gear drive frame of the present invention;

Figure 11 is a second schematic diagram of the connection between the gear and the gear drive frame of the present invention;

12 is a schematic diagram 1 of the connection of the gears in the shearing mechanism of the present invention;

Figure 13 is a second schematic diagram of the connection of gears in the shearing mechanism of the present invention;

Figure 14 is a schematic diagram 3 of the connection of the gears in the shearing mechanism of the present invention;

FIG. 15 is a schematic diagram 4 of the structure of the shearing mechanism of the present invention;

Fig. 16 is the first structural schematic diagram of the pushing mechanism of the present invention;

Fig. 17 is the second structural schematic diagram of the pushing mechanism of the present invention;

18 is a schematic structural diagram of a fixing frame piece of the present invention;

Fig. 19 is the structural representation of the right frame piece of the present invention;

20 is a schematic structural diagram 1 of the pressing elastic mechanism of the present invention;

21 is a second structural schematic diagram of the pressing elastic mechanism of the present invention;

22 is a cross-sectional view of the pressing elastic mechanism of the present invention;

The reference numerals are: 1-handle, 11-sliding handle, 2-outer casing, 3-articulated head, 4-biopsy forceps, 41-first forceps flap, 42-second forceps flap, 43-avoidance opening, 44-Sawtooth, 45-Ring groove, 46-Elastic tightening belt, 5-Jumping mechanism, 51-Bevel splitting block, 52-Bevel wedge head, 53-Top push-pull strip, 6-Shearing mechanism, 61-Fixing frame Plate, 611-left frame plate, 612-right frame plate, 613-wide side segment, 614-narrow side segment, 615-guide block, 616-serrated edge, 617-arc-shaped rack, 62-gear fixing plate , 621-gear, 622-circumferential guide groove, 63-gear drive frame, 631-left turning knife, 632-right turning knife, 633-gear sliding port, 634-moving push-pull bar, 635-guide groove, 636 -Rack, 637-Guide bar, 7-Press elastic mechanism, 71-Fixed shell, 72-Slide block, 73-Press piece, 74-Top flap, 75-Chute, 76-Top plate, 77-Spring, 8- Liquid-passing mechanism, 81-inner sleeve, 82-guide wire.

Detailed ways

In order to make those skilled in the art better understand the solutions of the present invention, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only Embodiments are part of the present invention, but not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

As shown in FIGS. 1 to 22 , a circumferentially retractable forceps flap type multi-function lumen biopsy forceps device of the present invention includes a handle 1 , an outer sleeve 2 , a hinged head 3 and a biopsy forceps 4 that are connected in sequence.

As shown in FIG. 1 , the biopsy forceps 4 is provided with a pushing mechanism 5 for opening the biopsy forceps 4. The pushing mechanism 5 passes through the outer sleeve 2 and is connected to a sliding handle 11 provided on the handle 1. The sliding handle 11 can be The pushing mechanism 5 is driven to move so that the biopsy forceps 4 is unfolded.

The biopsy forceps 4 is also provided with a shearing mechanism 6 for cutting the biopsy tissue of the sidewall of the blood vessel, and a pressing elastic mechanism 5 is provided on the handle 1. The pressing elastic mechanism 5 is connected with the shearing mechanism 6, and the pressing elastic mechanism 5 can drive the shears. The cutting mechanism 6 cuts the biopsy tissue of the side wall of the blood vessel.

As shown in FIGS. 2 to 6 , in the present invention, the biopsy forceps 4 is hinged on the hinge joint 3 , and the biopsy forceps 4 includes a first forceps flap 41 and a second forceps flap 42 , the first forceps flap 41 and the second forceps flaps 42 are provided with a way out 43, the edges of the first clamp valve 41 and the second clamp valve 42 are provided with evenly arranged serrations 44, and the roots of the first clamp valve 41 and the second clamp valve 42 are provided with rings. Slot 45, an elastic tightening band 46 is arranged in the annular groove 45; specifically, the outer sleeve 2 is a slender round tube, the handle 1 is provided with a sliding handle 11 that can guide and slide, and is coaxially fixed at the front end of the outer sleeve 2 A hinged joint 3 is provided, and a biopsy forceps 4 is hinged on the hinged joint 3. The biopsy forceps 4 is formed by hingedly connecting the first forceps flap 41 and the second forceps flap 42. There are serrations 44 evenly arranged before and after the place is designed, and a gap with a certain depth and width is provided in the middle area of the upper edge of the first clamp valve 41 and the second clamp valve 42 as a way out 43, and the first clamp valve 41 and the second clamp valve are provided with a gap 43. The second jaws 42 are opposite to each other. When the first jaw 41 and the second jaw 42 are closed, the two opposite jaws can make the inner and outer sides of the jaws have a channel opening with a certain area area. , when the biopsy forceps 4 is closed, the protruding tissue on the inner wall of the blood vessel is clamped into the first forceps flap 41 and the second forceps flap 42 . Two ring grooves 45 are provided on the circumferential outer walls of the root regions of the first jaw 41 and the second jaw 42 along the front-rear direction, and the two ring grooves 45 have a certain interval in the front-rear direction. All are covered with elastic tightening belts 46, and the ring grooves 45 play a role in locking the elastic tightening belts 46 to prevent slipping. The elastic tightening belts 46 have the characteristics of elastic expansion and contraction, and are used in elastic In the stretched state, the first forceps 41 and the second forceps 42 of the biopsy forceps 4 are always in a closed state under the elastic tightening action of the front and rear elastic tightening bands 46 when there is no external force.

As shown in FIGS. 7 to 9 , in the present invention, the shearing mechanism 6 includes a fixed frame piece 61 , a gear fixed piece 62 and a gear drive frame 63 , the fixed frame piece 61 includes a left frame piece 611 and a right frame piece 612 , and the left The frame piece 611 and the right frame piece 612 are respectively connected with the left rotating knife 631 and the right rotating knife 632. 613 is provided with a serrated edge 616 for cutting, an arc-shaped rack 617 is provided on the narrow side section 614, a gear 621 is hinged to the gear fixing plate 62, and the gear 621 is meshed with the gear drive frame 63 and the arc-shaped rack 617 respectively. connect.

Specifically, a fixing frame piece 61 is fixedly connected to the front end of the hinge joint 3, and the fixing frame piece 61 is divided into a left frame piece 611 and a right frame piece 612 which are symmetrically distributed, and the left frame piece 611 and the right frame piece 612 have a certain radian. There is a gap of a certain width between the left frame 611 and the lower edge of the right frame 612, and the left frame 611 and the right frame 612 are fixedly connected near the root area, and are connected to the hinge joint 3 through the root. Fixed connection. A gear fixing piece 62 is fixed in the middle of the gap between the left frame piece 611 and the right frame piece 612 . The gear fixing piece 62 is fixed between the gap between the left frame piece 611 and the right frame piece 612 like a beam.

In the present invention, both the left frame piece 611 and the right frame piece 612 are provided with guide blocks 615 , the left rotary knife 631 and the right rotary knife 632 are both provided with guide grooves 635 , and the guide blocks 615 are stuck in the guide grooves 635 Specifically, on the left frame 611 of the fixed frame sheet 61 and the outer side of the right frame sheet 612, two guide blocks 615 protruding to the outside are respectively provided, and the section of the guide block 615 is a T-shaped, and the left frame sheet The two guide blocks 615 of 611 are axially close to the front end, the two guide blocks 616 of the right frame piece 612 are axially close to the rear end, and the two guide blocks of the same side frame piece are at the same axial depth. . A left rotating knife 631 and a right rotating knife 632 are connected to the left frame piece 611 and the right frame piece 612 respectively through the guide stopper. structure, and the overall outline is similar to the "7"-shaped right-angle structure, that is, the wider area in the axial direction is the broad side segment 613, and the area with the narrower axial width that is integrally connected with the lower edge is the narrow side In section 614, a guide groove 635 with a certain arc is formed on the left rotating knife 631 and the right rotating knife 632 along the circumferential direction. Both the left rotating knife 631 and the right rotating knife 632 pass through the guide groove 635 and its corresponding guide block 615 are mutually locked, so that the left rotating knife 631 and the right rotating knife 632 can only rotate against the arc outer wall of the frame, and cannot move relative to each other in the axial direction. The upper edges of the broad side sections 613 of the left rotary knife 631 and the right rotary knife 632 are designed as serrated edges 616, and the serrated edges 616 have cutting edges and serrations. The right-angle side end edges of the narrow side segments 614 of the left rotary knife 631 and the right rotary knife 632 are designed as evenly arranged arc-shaped racks 617 .

The structures of the left rotating knife 631 and the right rotating knife 632 are both the above-described structures, and the serrated cutting edges 616 of the left rotating knife 631 and the right rotating knife 632 are in the upper position, and are at the same top with the vacant opening 43, and the left The arc-shaped racks 617 of the rotating knife 631 and the right rotating knife 632 are facing opposite, and there is a certain interval between the two arc-shaped racks 617 . A gear 621 is provided below the gear fixing piece 62 to be hinged with the gear fixing piece 62 , and the gear 621 meshes with the arc-shaped rack 617 in the front and rear directions respectively. When the gear 621 rotates, the left rotating knife 631 and the right rotating knife 632 can be driven to rotate synchronously in the opposite direction or in the opposite direction under the arc limit of the guide block 615 of the fixed frame piece 62 . When the serrated cutting edges 616 on the upper edges of the left rotating knife 631 and the right rotating knife 632 are rotated in opposite directions and approach each other, the cutting edges are located at the upper shearing surfaces where the cutting edge surfaces of the cutting edges are respectively, so that the left rotating knife 631 and the The right rotary knives 632 have a cutting effect on each other.

As shown in FIG. 10 and FIG. 11 , in the present invention, the gear drive frame 63 is provided with a gear sliding port 633 engaged with the gear 621 , and a rack 636 is provided on one side of the gear sliding port 633 . The other side is provided with a guide 637, and the gear 621 is provided with a circumferential guide groove 622 for the guide bar 637 to be inserted into; the gear drive frame 63 is connected with the moving push-pull bar 634, and the moving push-pull bar 634 passes through the outer sleeve 2 and presses the elastic Mechanism 7; Specifically, the thickness of the gear 621 is greater than the thickness of the left rotating knife 631 and the right rotating knife 632, and when the gear 621 is engaged with the arc-shaped rack 617, the bottom surface of the gear 621 and the left rotating knife 631 and The bottom of the meshing portion of the right rotary knife 632 is flush, so that the upper end of the gear 621 extends a certain height relative to the upper end of the arc-shaped rack 617 . A gear drive frame 63 is sleeved outside the gear segment in the area above the arc gear 617 , and the gear drive frame 63 is located at the gear segment in the area between the gear fixing plate 62 and the arc rack 617 .

The outline of the gear drive frame 63 is a rectangle. An oval gear sliding port 633 is provided in the middle area of the gear drive frame 63. The gear 621 is sleeved inside the gear sliding port 633 and can move back and forth inside. On the two straight side walls inside the oval gear sliding port 633 , one of the straight side walls is integrally provided with a uniformly distributed rack 636 , the rack 636 can engage with the gear 621 , and the other side A raised guide bar 637 is arranged on the side wall of the straight side along the direction of the side wall of the straight section, and a circumferential guide groove 622 is arranged on the gear 621 to match the guide 637, so that the guide bar 637 is connected to the ring. Under the guiding action of the peripheral guide groove 622, the gear drive frame 63 can slide in the front and rear directions. During the sliding process of the gear drive frame 63, at the same time, the gear rack on the straight side wall of the gear drive frame 63 can drive the rotation of the gear. . A movable push-pull bar 634 is fixedly connected to the rear end of the gear drive frame 63 , and the movable push-pull bar 634 passes through the hinge joint 3 backwards, and has been extended backward in the pipe wall of the outer casing 2 to the handle 1 on the rear side, and the movable push-pull bar 634 It has a certain strength, and can drive the front gear drive frame 63 to move back and forth when pushed back and forth.

As shown in FIGS. 16 and 17 , in the present invention, the pushing mechanism 5 includes a wedge block 51 , a wedge head 52 and a push-pull strip 53 , the wedge block 51 is open, and the wedge head 52 is pushed and pulled The bar 53 is connected with the sliding handle 11 through the oblique splitting block 51; in particular, an inwardly protruding oblique splitting block 51 is integrally fixed in the inner area of the root of the biopsy forceps 4, and the oblique splitting block 51 is in the inwardly protruding part. The length decreases once from the root toward the front, so that the two bevel blocks 51 form an open structure as a whole. A wedge head 52 is arranged in the middle area of the front end of the hinge joint 3. The outer diameter of the wedge head 52 increases sequentially from the rear end root to the front end, and the overall outline is similar to a conical structure. Two push-pull bars 53 are connected, and the push-pull bars 53 extend backward in the channel in the pipe wall of the outer casing 2 to the rear end handle 1. When the 52 is located in front of the middle area of the two wedge blocks 51, the wedge head 52 is not in contact with the wedge block 51, and at this time, the two forceps flaps of the biopsy forceps 4 are in a closed state.

When the wedge head 52 is pulled backward by the push-pulling strip 53, the conical wedge head 52 with a thin rear and a thick front moves backward at the open channel between the two wedge blocks 51. During the movement The oblique splitting blocks 51 on both sides of the wedge head 52 gradually play a supporting role to the outside, so that the two forceps flaps of the biopsy forceps 4 gradually open; During the block, the first clamp valve 41 and the second clamp valve 42 are gradually tightened under the elastic tightening action of the elastic tightening belt 46 during the forward movement of the wedge head 52. When closed, the two parallel push-pull bars 53 are connected with a sliding handle 11 at the rear handle section of the outer sleeve 2. By sliding the sliding handle forward and backward in the axial direction, 11 can drive the wedge head 52 to move forward and backward.

As shown in FIGS. 20 to 22 , in the present invention, the pressing elastic mechanism 7 includes a fixed shell 71 , a sliding block 72 , a pressing piece 73 and a top flap 74 , the outer sleeve 2 is provided with a chute 75 , and the fixed shell 71 is connected to the In the chute 75, a top plate 76 is arranged in the fixed shell 71, a spring 75 is arranged between the sliding block 72 and the top plate 76, the pressing piece 73 is hinged with the top flap 74, and the top flap 74 is connected with the sliding block 72; The push-pull bar 634 is connected with the pressing elastic push-pull mechanism 7 on the pipe wall of the outer casing 2 extending backward to the rear handle 11 , and a sliding groove 75 with a certain depth concave inward is provided at the pipe wall of the outer casing 2 that presses the elastic push-pull mechanism 7 , the chute 75 has a certain length along the axial front and rear directions, a fixed shell 71 is fixed inside the chute 75, and a sliding block 72 is sleeved inside the fixed shell 71. The rear end of the movable push-pull bar 634 is fixedly connected with the sliding block 72 , a vertical top plate 76 is integrally fixed in the interior of the fixed shell 71 , and a spring 77 is connected between the top plate 76 of the fixed shell 71 and the sliding block 72 . The outside is fixed with a synchronously hinged pressing piece 73 and a top flap 74, the top flap 74 is located in the middle area of the pressing piece 73 and is hinged on the same hinge shaft, there is a certain angle between the top flap 74 and the pressing piece 73, and the top flap 74 is hinged on the same hinge axis. The lower side receives the pressing force of the pressing sheet 73 , and the upper side of the top flap 74 is provided with the top corner of the sliding block 72 for receiving the pressing action of the top flap 74 .

When the pressing piece 73 is pressed upward, the pressing piece 73 presses the top flap 74 to deflect the angle of the top flap 74 , so that the sliding block 72 slides backward inside the chute 75 by pressing the top angle of the sliding block 72 Therefore, by moving the push-pull bar 634, the gear drive frame 63 is moved backward, and the gear 621 is driven to rotate, so that the left rotating knife 631 and the right rotating knife 632 rotate in opposite directions, and finally the two serrated edges 616 are mutually sheared and cut. In this state, the length of the spring 77 is shortened by compression, and the whole is in a compressed state. When the pressing piece 73 is stopped, the spring 77 resets and pushes the sliding block 72 to move forward, thereby driving the gear driving frame 63 to move forward synchronously by moving the push-pull bar 634, and driving the left rotating knife 631 and the right rotating knife through the gear 621 The 632 rotates in the opposite direction synchronously, and the two serrated edges 616 move away from each other, so that the distance between the two serrated edges 616 is larger than the width of the biopsy channel formed by the upper side openings 43 of the two forceps flaps.

In the present invention, in order to pass the medicinal liquid for auxiliary treatment, it includes a liquid passing mechanism 8 for transporting medicinal liquid. The liquid passing mechanism 8 includes an inner sleeve 81 and a guide wire 82. There is a round hole channel, an inner sleeve 81 is arranged in the round hole channel, and the guide wire 82 is introduced into the inner sleeve 81; The middle area of 52 is provided with a round hole channel through which the inner sleeve 81 can penetrate. When taking a biopsy, medicinal liquid is introduced for auxiliary treatment, and a port is provided at the rear end of the handle 11 for inserting the inner cannula 81 into the outer cannula 2 .

When the present invention needs to cut and clip the biopsy tissue from the side wall of the blood vessel in the patient, in the initial state, the two forceps flaps of the biopsy forceps 4 are in a closed state, and the serrated edges 616 of the left rotating knife 631 and the right rotating knife 632 are in a closed state. Also in the open state, when the present invention is delivered to the blood vessel in the body and needs to be cut and clamped to the position of the biopsy tissue, the sliding handle 11 is pulled backward, and the sliding handle 11 drives the wedge plug 52 to pull backward through the push-pull strip 53, and the wedge plug The 52 pairs of oblique splitting blocks 51 on both sides are supported to open the two forceps flaps; for the biopsy tissue that cannot be clamped normally, the upper side of the biopsy forceps 4 is placed close to the biopsy tissue, the sliding handle 11 is released, and the first forceps flap 41 And the second forceps valve 42 is closed under the elastic tightening action of the elastic tightening belt 46, at this time the biopsy forceps 4 is clamped at the passage opening at the upper end of the forceps valve; pressing the pressing piece 73, the pressing piece 73 is driven to slide by the top flap 74 The block 72 slides backward, so that the gear drive frame 63 is moved backward by moving the push-pull bar 634, and the gear 621 is driven to rotate, so that the left rotating knife 631 and the right rotating knife 632 rotate in opposite directions, and the clamps on the first clamp flap 41 and the The biopsy tissue at the upper channel opening of the second forceps flap 42 is cut and cut, and the cut biopsy tissue is stored inside the biopsy forceps 4, thereby completing the effect of cutting biopsy. , and the serrations of the first clamp flap 41 and the second clamp flap 42 can be clamped and dropped.

The innovative technical points and beneficial effects of the present invention are at least as follows:

1. The serrations 44 of the first clamp valve 41 and the second clamp valve 42 can not only clamp and collect the biopsy tissue that is easy to fall off the inner wall of the blood vessel, but also the rotating knife structure arranged inside the first clamp valve 41 and the second clamp valve 42, for The biopsy tissue that is not easy to fall off can be clipped into the inside of the channel opening and easily cut to make it detached. The operation is convenient, the effect is remarkable, and the efficiency is greatly improved.

2. Both the double rotary knives adopt the synchronous opposite or opposite arc-shaped circular rotation type, and the overall shape adopts the "7" type right-angle section of the circular arc piece, which ensures that the upper edge of the broad-side section 613 has a wider serrated edge 616, It can have more cutting length. The arc-shaped racks 617 of the left rotating knife 631 and the right rotating knife 632 can mesh with the gear 621 at the same time. The arc guide of the right rotary knife 632 enables the gear 621 to always drive the dual rotary knives to rotate in the opposite or reverse arc circular shape, which ensures the cutting stability of the dual rotary knives, and the serrated edge 616 has both serrations and cutting edges The design ensures that the double rotating knife can also generate a large shearing force generated by the larger oblique sawtooth when cutting in the opposite circular direction, and can smoothly cut the biopsy tissue without the situation that cannot be cut off. At the same time, the double rotating knife can The arc-shaped structure is adopted, and the fixed clip also adopts the arc-shaped plate, so that the above-mentioned structure can be as close to the inner wall of the forceps valve as possible, and the space in the middle area is reserved so that a larger volume of biopsy tissue can be clamped.

3. The gear 621 is driven to rotate by the sliding action of the gear driving frame 63. The inner side of the gear driving frame 63 is provided with a guide bar 637 to match the circumferential guide groove 622 of the gear 621, which can guide the sliding of the gear driving frame 63. The rack 636 provided on the other side of the gear drive frame 63 can make it drive the gear 621 during the sliding process. On the basis of ensuring the functionality, the space occupied by the above structure is reduced to the greatest extent, and the availability of the internal space of the clamp valve is ensured, so that the clamp can be clamped to the greatest extent possible. Get more tissue.

4. The rear end of the top push-pull bar 53 is connected by pressing the elastic push-pull mechanism 7, and the top flap 74 and the fixed shell 71 are hinged at the same time through the pressing piece 73, and a spring 77 is provided inside, which can play the effect of resetting and opening the double rotating knife after cutting, The pressing piece 73 is hinged to the top flap 74, and the top flap 74 supports the sliding block 72, which can realize the simple operation of pressing the pressing piece 73 to complete the process of double-rotating knife cutting, which greatly simplifies the operation.

5. The oblique splitting block 51 provided on the inner wall of the biopsy forceps 4 can achieve the effect of opening through the wedge head 52, and cooperate with the double elastic tightening belts 46 to achieve the effect of closing and resetting the forceps valve, not only The opening and closing effect with reset function can be achieved, and at the same time, the inner sleeve 81 can be passed through the wedge head 52 to achieve the purpose of injecting medicinal liquid, which not only has a therapeutic effect on the cut biopsy tissue, but also ensures that part of the biopsy tissue is cut. To a certain extent, the activity of biopsies can shorten the culture period before biopsy tissue diagnosis, and speed up the progress of diagnosis and treatment.

The above are only the preferred embodiments of the present invention. It should be pointed out that for those skilled in the art, without departing from the principles of the present invention, several improvements and modifications can be made. It should be regarded as the protection scope of the present invention.

Claims (10)

1. a circumferential telescopic forceps flap type multifunctional cavity biopsy forceps device, is characterized in that, comprises handle, outer casing, hinged head and biopsy forceps connected successively, in described biopsy forceps, be provided with and be used for described biopsy forceps. an open push mechanism, the push mechanism passes through the outer sleeve and is connected to a sliding handle provided on the handle, and the sliding handle can drive the push mechanism to move to make the biopsy forceps unfold; The biopsy forceps is also provided with a shearing mechanism for cutting the biopsy tissue of the sidewall of the blood vessel, the handle is provided with a pressing elastic mechanism, the pressing elastic mechanism is connected with the shearing mechanism, and the pressing elastic mechanism is The cutting mechanism can be driven to cut the biopsy tissue of the side wall of the blood vessel. 2. A circumferential telescopic forceps flap type multifunctional cavity biopsy forceps device according to claim 1, wherein the biopsy forceps is hinged on the hinge joint, and the biopsy forceps comprises a first forceps flap And the second clamp valve, the first clamp valve and the second clamp valve are both provided with an abdication opening, and the edges of the first clamp valve and the second clamp valve are provided with uniformly arranged serrations. 3. a kind of circumferentially retractable forceps valve type multifunctional cavity biopsy forceps device according to claim 2, is characterized in that, the root of described first forceps valve and the second forceps valve are provided with annular groove, described An elastic tightening band is arranged in the ring groove. 4. A kind of circumferential telescopic forceps flap type multifunctional cavity biopsy forceps device according to claim 3, characterized in that, the pushing mechanism comprises an oblique split block, an oblique wedge head and a push-pull strip, and the oblique The splitting block is open, and the wedge plug is connected to the sliding handle through the oblique splitting block through a push-pull strip. 5. A circumferential telescopic forceps flap type multifunctional cavity biopsy forceps device according to claim 4, wherein the shearing mechanism comprises a fixed frame piece, a gear fixed piece and a gear drive frame, and the fixed The frame piece includes a left frame piece and a right frame piece, and the left frame piece and the right frame piece are respectively connected with the left rotating knife and the right rotating knife, and the left rotating knife and the right rotating knife are both provided with wide side sections and a narrow side segment, the broad side segment is provided with a serrated edge for shearing, an arc-shaped rack is provided on the narrow side segment, the gear fixing plate is hinged with a gear, and the gear is respectively driven with the gear The frame and the arc-shaped rack are meshed and connected. 6. A kind of circumferential telescopic forceps flap type multifunctional cavity biopsy forceps device according to claim 5, wherein the left frame piece and the right frame piece are both provided with guide blocks, and the left rotation Both the knife and the right rotating knife are provided with guide grooves, and the guide block is clamped in the guide grooves. 7 . The circumferential telescopic forceps flap type multifunctional cavity biopsy forceps device according to claim 6 , wherein a gear sliding port meshingly connected with the gear is provided in the gear drive frame, and the gear sliding port is provided in the gear drive frame. One side of the gear sliding port is provided with a rack, the other side of the gear sliding port is provided with a guide bar, and the gear is provided with a circumferential guide groove for the guide bar to be clamped into. 8 . The circumferential telescopic forceps flap type multifunctional cavity biopsy forceps device according to claim 7 , wherein the gear drive frame is connected with a moving push-pull bar, and the mobile push-pull bar passes through the outer jacket. 9 . tube and the pressing elastic mechanism. 9 . The circumferential telescopic forceps valve type multifunctional cavity biopsy forceps device according to claim 8 , wherein the pressing elastic mechanism comprises a fixed shell, a sliding block, a pressing piece and a top valve, and the outer sleeve 9 . A chute is arranged on the pipe, the fixed shell is connected in the chute, a top plate is arranged in the fixed shell, a spring is arranged between the sliding block and the top plate, and the pressing piece is connected to the top plate. The flap is hinged, and the top flap is connected to the sliding block. 10. A circumferential telescopic forceps valve type multi-function lumen biopsy forceps device according to claim 1, characterized in that, further comprising a liquid-passing mechanism for transporting medicinal liquid, and the liquid-passing mechanism comprises an inner cannula and a guide wire, the outer sleeve and the hinge head are provided with a circular hole channel, an inner sleeve is arranged in the circular hole channel, and the guide wire is introduced into the inner sleeve.

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