CN106725733B

CN106725733B - Novel purse-string forceps for laparoscope

Info

Publication number: CN106725733B
Application number: CN201710030394.9A
Authority: CN
Inventors: 柯重伟; 李溪; 洪亮; 吕飞舟; 洪洋; 王鑫; 刘亚萍
Original assignee: FIFTH PEOPLE'S HOSPITAL OF SHANGHAI
Current assignee: FIFTH PEOPLE'S HOSPITAL OF SHANGHAI
Priority date: 2017-01-17
Filing date: 2017-01-17
Publication date: 2023-07-07
Anticipated expiration: 2037-01-17
Also published as: CN106725733A

Abstract

The invention relates to a novel purse-string forceps for a laparoscope, which comprises a forceps holder, forceps handles, a sleeve, a fixed handle and a swinging handle, wherein the forceps handles comprise an upper forceps handle and a lower forceps handle, the upper forceps handle and the lower forceps handle are fixed at the head end of the sleeve through a pin shaft, and the upper forceps handle and the lower forceps handle can mutually rotate; the rear ends of the pliers handles are respectively connected with the front ends of the two connecting rods through connecting pins, the rear ends of the two connecting rods are connected with the front ends of the pull rods through connecting pins, the fixed handle is connected with the swing handle through the handle hinge, the pull rods are arranged in the sleeves, and the tail ends of the pull rods are fixedly connected with the swing handle. The purse-string forceps can be applied to laparoscopic surgery, the forceps jaws can enter the laparoscopic pneumoperitoneum to operate, and the defect that an instrument for carrying out circumferential purse string suture on the surface of the alimentary canal tissue in the abdominal cavity cannot enter the laparoscopic pneumoperitoneum to operate in the prior art is overcome.

Description

Novel purse-string forceps for laparoscope

Technical Field

The invention relates to the technical field of medical appliances, in particular to a novel purse-string forceps for a laparoscope.

Background

In surgery, since the first staple product of the invention in the 60 th century, medical staplers have become an indispensable medical instrument in assisting knife-edge suturing. Along with the development of medicine and the development of medical instrument products, more and more stitching nail products are applied to clinic, and the application range of the stitching nail products relates to the fields of gastrointestinal surgery, hepatobiliary surgery, thoracic surgery, urology surgery, gynaecology and obstetrics and the like, and becomes one of the indispensable tools of doctors. When a doctor performs end anastomosis of the alimentary canal, the doctor often uses a tubular anastomat to operate, and before anastomosis, the tissue is required to be purse-string-sutured at one end to implant the head of the tubular anastomat so as to be firmly ligated after the central rod is placed, and then the tissue anastomosis operation can be performed. At present, many doctors stitch the purse by hand, so that whether the amount of tissues at the purse is proper or not cannot be ensured, and if the residual tissues are excessive, the anastomat firing failure can be caused; if too few, there is a risk of fistulae after anastomosis. Therefore, in the use process, more and more doctors use purse forceps to suture the purse, and the performance of the instrument directly influences the operation, thereby playing a very important role on the operation effect. Currently, the practical purse-string forceps mainly comprise two types, namely a linear all-metal manual purse-string forceps and a linear staple type automatic purse-string forceps. For the linear type manual purse-string forceps, the linear type manual purse-string forceps generally comprise jaws, connecting rods and forceps handles, when the linear type manual purse-string forceps are used, tissues are clamped by the jaws firstly, then the notch is locked tightly, the tissues can be clamped naturally, a part of the tissues are extruded into the gap of the notch, at the moment, one end of the purse-string forceps penetrates into the upper round hole of the purse-string forceps through a needle with a tail wire, the purse-string forceps are pulled out from the other side, then the needle turns around, then the needle penetrates out of the lower round hole of the purse-string forceps, and finally two ends of the purse-string are knotted at one side. The head of the traditional purse-string forceps is generally at an angle of 90 degrees or 120 degrees with the forceps body, and the angle can not be adjusted at will. When the utility model is used in deep parts such as abdominal cavity, pelvic cavity, etc., the purse-string needle is difficult to penetrate and withdraw due to the narrow space, and the surrounding tissue and organs are easy to be damaged.

Patent CN2014204440576 discloses a changeable purse-string forceps of head angle, including left handle, right handle, left binding clip and right binding clip, wherein, rotate between left handle and the right handle and be connected, left handle, right handle respectively through rotating positioner respectively with left binding clip and right binding clip rotate to be connected, this rotation positioner can make the binding clip rotate for the handle to can fix a position in its rotation range, realized purse-string forceps according to actual need angle adjustment in the use. However, the purse-string forceps design can only be used in open surgery and cannot be used under laparoscopic surgery. Secondly, after the tissue is clamped by the jaws, the purse-string forceps needs to be subjected to needle sewing operation, and the relative angle between the forceps head and the handle is easy to change in the needle sewing process, so that needle threading is difficult.

Disclosure of Invention

The invention solves the defect that an instrument for carrying out circumferential purse string suture on the surface of alimentary canal tissue in an abdominal cavity cannot enter a laparoscope pneumoperitoneum for operation in the prior art, and provides the special purse string forceps for the laparoscope, which enter the pneumoperitoneum through a laparoscope working channel and carry out circumferential purse string suture on the surface of alimentary canal tissue in the abdominal cavity under the cooperation of a laparoscope.

In order to achieve the above purpose, the technical scheme adopted by the invention is as follows:

the novel purse-string forceps for the laparoscope comprise forceps clamps (1), forceps handles (2), a sleeve (3), a fixed handle (4) and a swinging handle (5), wherein the forceps handles (2) comprise an upper forceps handle and a lower forceps handle, the upper forceps handle and the lower forceps handle are fixed at the head end of the sleeve (3) through a pin shaft (6), and the upper forceps handle and the lower forceps handle can rotate mutually; the rear ends of the clamp handles (2) are respectively connected with the front ends of the two connecting rods (7) through two hinge shafts (8) to form a plane four-rod telescopic structure, the rear ends of the two connecting rods (7) are connected with the front ends of the pull rods (9) through connecting pins (10), the fixed handles (4) are connected with the swing handles (5) through handle hinge shafts (11), the pull rods (9) are arranged in the sleeves (3), and the tail ends of the pull rods (9) are fixedly connected with the swing handles (5); the pull rod (9) slides left and right in the sleeve (3) by pressing the swing handle (5) to drive the opening or the engagement of the clamp (1); the clamp (1) comprises an upper clamp and a lower clamp, the upper clamp and the lower clamp are respectively provided with clamp teeth with the same tooth number and opposite tooth numbers, and the middle parts of the clamp teeth are provided with threading holes: the novel wrench is characterized in that a sleeve (12) is arranged on the wrench handle (2), an inner sleeve (13) is arranged on the wrench clamp (1), the sleeve (12) is rotationally connected with the inner sleeve (13), and the wrench handle (2) is connected with the wrench clamp (1) through the sleeve (12) and the inner sleeve (13), so that the wrench clamp (1) can rotate relative to the wrench handle (2).

Further, the sleeve (12) is hollow and tubular, and one end of the sleeve (12) is fixed on the surface of the clamp handle (2); a rotating shaft (14) is arranged in the sleeve (12), and the rotating shaft (14) is arranged at the axial position of the sleeve (12) and is fixedly connected with the clamp handle (2); the rotating shaft (14) is provided with an inclined plane (15) at the part close to the clamp handle (2); one end of the inner sleeve (13) is fixedly connected with the clamp (1), the other end of the inner sleeve is inserted into the sleeve (12) and is rotationally connected with the rotating shaft (14), and the inner sleeve (13) can slide along the axial direction of the rotating shaft (14); the outer surface of the inner sleeve (13) is attached to the inner surface of the sleeve (12), a plurality of positioning grooves (16) are formed in the outer surface of the inner sleeve (13), the positioning grooves (16) are uniformly distributed on the circumferential wall surface of the inner sleeve (13), ball cavities (17) are formed in the inner surfaces of the sleeve (12) corresponding to the positioning grooves (16), springs (18) are arranged in the ball cavities (17), and positioning balls (19) connected with the springs (18) are arranged at openings of the ball cavities (17); the positioning ball (19) is partially positioned in the ball cavity (17), and is partially positioned outside the ball cavity (17); the inner sleeve (13) is provided with a locking groove (20) on the end surface positioned in the sleeve (12), a plurality of through holes (21) are formed in the side wall of the locking groove (20), the axis of the through holes (21) is perpendicular to the axis of the rotating shaft (14) and is arranged on the same longitudinal surface, and locking steel balls (22) which are in contact with the inclined surface (15) are arranged in the through holes (21); when the inner sleeve (13) slides inwards along the axial direction of the rotating shaft (14), the lower surface of the locking steel ball (22) rolls on the inclined surface (15) until the upper surface of the locking steel ball (22) is in contact with the inner wall of the sleeve (12); a reset spring (23) is arranged between the end face of the inner sleeve (13) and the bottom face of the sleeve (12), the reset spring (23) is sleeved on the rotating shaft (14), one end of the reset spring (23) is in movable contact with the end face of the inner sleeve (13), and the other end of the reset spring is in movable contact with the bottom face of the sleeve (12).

Further, the number of the ball cavities (17) is 2-6, and the number of the positioning grooves (16) is 12.

Further, the end face of the inner sleeve (13) is provided with a bump (24).

Further, the number of the through holes (21) is 2-6.

The invention has the advantages that:

1. the purse-string forceps can be applied to laparoscopic surgery, and the forceps holder can be used for suturing by entering the laparoscopic pneumoperitoneum inner ring Zhou Hebao.

2. The novel purse-string forceps can freely adjust the angle between the forceps holder and the forceps handle according to actual needs, is convenient for penetrating and pulling out purse-string wires when being used in deep parts, is more convenient for purse-string suturing, reduces the side damage to surrounding tissues, and is convenient for operators to use.

3. The angle positioning device is arranged between the middle forceps holder and the forceps handles, so that the angles between the forceps holder and the forceps handles are fixed when the angles between the forceps holder and the forceps handles are 30 degrees, 60 degrees, 90 degrees and 120 degrees relative to the plane where the forceps handles are located, the angles between the forceps holder and the forceps handles are not changed in the needle threading process, and the operation in operation is facilitated.

Drawings

Fig. 1 is a schematic structural view of the laparoscopic purse-string forceps of the invention.

Fig. 2 is an enlarged schematic view of the area a in fig. 1.

Fig. 3 is a schematic diagram of the connection of the jaw, the jaw handle, the connecting rod and the pull rod in the invention.

Fig. 4 is a schematic diagram of an improved embodiment of the present invention.

Detailed Description

The invention is further described below in conjunction with the detailed description. It is to be understood that these examples are illustrative of the present invention and are not intended to limit the scope of the present invention. Further, it is understood that various changes and modifications of the present invention may be made by those skilled in the art after reading the description of the present invention, and such equivalents are intended to fall within the scope of the claims appended hereto.

Reference numerals and components referred to in the drawings are as follows:

1-clamp 2-clamp handle 3-sleeve

4-fixed handle 5-swinging handle 6-pin shaft

7-connecting rod 8-hinge shaft 9-pull rod

10-connecting pin 11-handle hinge 12-sleeve

13-inner sleeve 14-rotating shaft 15-inclined plane

16-positioning groove 17-ball cavity 18-spring

19-positioning ball 20-locking groove 21-through hole

22-locking steel ball 23-return spring 24-bump

Example 1 novel laparoscopic purse-string forceps of the present invention

Please refer to fig. 1-3. Fig. 1 is a schematic structural view of a laparoscopic purse-string forceps of the invention, fig. 2 is an enlarged schematic view of a region a in fig. 1, and fig. 3 is a schematic connecting view of a jaw, a jaw handle, a connecting rod and a pull rod of the invention.

The utility model provides a novel purse-string forceps for laparoscope, includes jaw 1, pincers handle 2, sleeve pipe 3, fixed handle 4, swing handle 5, pincers handle 2 includes pincers handle and lower pincers handle, goes up pincers handle and lower pincers handle and fixes the head end at sleeve pipe 3 through round pin axle 6, go up pincers handle and lower pincers handle and rotate each other, the rear end of pincers handle 2 forms plane four-bar telescopic structure with the front end of two connecting rods 7 respectively through two articulated shafts 8, and the rear end of two connecting rods 7 is connected through connecting pin 10 with the front end of pull rod 9, fixed handle 4 is connected through handle articulated shaft 11 with swing handle 5, and pull rod 9 sets up in sleeve pipe 3, and the end of pull rod 9 and with swing handle 5 fixed connection. By pressing the swing handle 5, the pull rod 9 is slid laterally in the sleeve 3, and the jaws 1 are driven to open or bite. The clamp 1 comprises an upper clamp and a lower clamp, the upper clamp and the lower clamp are respectively provided with clamp teeth with the same tooth number and opposite tooth numbers, and the middle parts of the clamp teeth are provided with threading holes. The clamp handle 2 is provided with a sleeve 12, the clamp 1 is provided with an inner sleeve 13, the sleeve 12 is rotationally connected with the inner sleeve 13, and the clamp handle 2 is connected with the clamp 1 through the sleeve 12 and the inner sleeve 13, so that the clamp 1 can rotate relative to the clamp handle 2.

When the invention is used, the thumb is stretched into the finger ring of the swing handle, the ring finger is stretched into the finger ring of the fixed handle, the thumb is retracted, the swing handle pulls the pull rod, and the pull rod drives the connecting rod, so that the clamp handle and the clamp are closed. Simultaneously, as the forceps holder can rotate relative to the forceps handles, the angle between the forceps holder and the forceps handles can be freely adjusted according to actual needs during use, so that purse-string needles and wires can be conveniently inserted and pulled out during deep use under the laparoscope, purse stitching is more convenient, side injury to surrounding tissues is reduced, and the forceps are convenient for operators to use.

Example 2 improvement of the invention

The purse-string forceps of this embodiment have the same structure as that of embodiment 1, except that an angle positioning device is arranged between the sleeve and the inner sleeve, so that the angles between the forceps jaws and the forceps handles are fixed when the forceps jaws are 30 degrees, 60 degrees, 90 degrees and 120 degrees relative to the plane where the forceps handles are located, and the forceps jaws and the forceps handles are convenient to operate in operation.

The structure of the sleeve 12 and the inner sleeve 13 and the connection mode thereof are shown in fig. 4. The sleeve 12 is hollow and tubular, and one end of the sleeve 12 is fixed on the surface of the clamp handle 2; a rotating shaft 14 is arranged in the sleeve 12, and the rotating shaft 14 is arranged at the axial position of the sleeve 12 and is fixedly connected with the clamp handle 2; the rotating shaft 14 is provided with an inclined plane 15 at the part close to the clamp handle 2. One end of the inner sleeve 13 is fixedly connected with the clamp 1, the other end of the inner sleeve 13 is inserted into the sleeve 12 and is rotationally connected with the rotating shaft 14, and the inner sleeve 13 can slide along the axial direction of the rotating shaft 14. The outer surface of the inner sleeve 13 is attached to the inner surface of the sleeve 12, a plurality of positioning grooves 16 are formed in the outer surface of the inner sleeve 13, the positioning grooves 16 are uniformly distributed on the circumferential wall surface of the inner sleeve 13, ball cavities 17 are formed in the sleeve 12 and correspond to the positioning grooves 16, springs 18 are arranged in the ball cavities 17, and positioning balls 19 connected with the springs 18 are arranged at openings of the ball cavities 17; the positioning balls 19 are located partly inside the ball chamber 17 and partly outside the ball chamber 17. When the inner sleeve 13 and the sleeve 12 rotate with each other, the spring 18 is compressed, and the positioning balls 19 completely enter the ball cavities 17; when the inner sleeve 13 and the sleeve 12 rotate for a certain angle, the positioning balls 19 partially reenter the other adjacent positioning grooves 16, so that different angle positioning is realized between the inner sleeve 13 and the sleeve 12.

The inner sleeve 13 is provided with a locking groove 20 on the end surface positioned in the sleeve 12, a plurality of through holes 21 are arranged on the side wall of the locking groove 20, the number of the through holes 21 is 2-6, the axes of the through holes 21 are perpendicular to the axis of the rotating shaft 14 and are arranged on the same longitudinal surface, and locking steel balls 22 contacted with the inclined surface 15 are arranged in the through holes 21; when the inner sleeve 13 slides inwards along the axial direction of the rotating shaft 14, the lower surface of the locking steel ball 22 rolls on the inclined surface 15 until the upper surface of the locking steel ball 22 contacts with the inner wall of the sleeve 12, and the locking steel ball 22 is locked by the balance of the thrust force of the inner sleeve 13, the elasticity of the inclined surface 15 and the elasticity of the inner wall of the sleeve 12, so that the inner sleeve 13 and the sleeve 12 cannot rotate relatively.

A return spring 23 is arranged between the end face of the inner sleeve 13 and the bottom face of the sleeve 12, the return spring 23 is sleeved on the rotating shaft 14, one end of the return spring 23 is in movable contact with the end face of the inner sleeve 13, and the other end of the return spring is in movable contact with the bottom face of the sleeve 12. The elastic force provided by the return spring 23 keeps the locking steel ball 22 in the unlocked state.

Further, the number of the ball cavities 17 is 2-6, the number of the positioning grooves 16 is 12, and when the planes of the forceps holder 1 and the forceps handle 2 are 30 degrees, 60 degrees, 90 degrees and 120 degrees, the positioning grooves 16 and the ball cavities 17 correspondingly fix the angles between the forceps holder 1 and the forceps handle 2.

Further, the end face of the inner sleeve is provided with a bump 24. When the left and right pliers heads are clamped, the inner sleeve slides into the sleeve under the action of the pliers clamps to lock the locking steel balls, and the convex blocks 24 are contacted with the bottom surface of the sleeve, so that the clamping force of the pliers handles can directly act on the pliers clamps, and the unstable clamping force of the handles is avoided.

The clamping angle of the purse-string forceps in the embodiment can be adjusted according to the use condition, when the clamping is carried out, the angle between the clamping and the forceps handle is locked, and the needle threading operation can not change the angle of the clamping at the moment; after the clamp is loosened, the clamp angle is restored to an adjustable state.

The foregoing is merely a preferred embodiment of the present invention, and it should be noted that modifications and additions may be made to those skilled in the art without departing from the method of the present invention, which modifications and additions are also to be considered as within the scope of the present invention.

Claims

1. The novel purse-string forceps for the laparoscope comprise forceps clamps (1), forceps handles (2), a sleeve (3), a fixed handle (4) and a swinging handle (5), and are characterized in that the forceps handles (2) comprise an upper forceps handle and a lower forceps handle, the upper forceps handle and the lower forceps handle are fixed at the head end of the sleeve (3) through a pin shaft (6), and the upper forceps handle and the lower forceps handle can rotate mutually; the rear ends of the clamp handles (2) are respectively connected with the front ends of the two connecting rods (7) through two hinge shafts (8) to form a plane four-rod telescopic structure, the rear ends of the two connecting rods (7) are connected with the front ends of the pull rods (9) through connecting pins (10), the fixed handles (4) are connected with the swing handles (5) through handle hinge shafts (11), the pull rods (9) are arranged in the sleeves (3), and the tail ends of the pull rods (9) are fixedly connected with the swing handles (5); the pull rod (9) slides left and right in the sleeve (3) by pressing the swing handle (5) to drive the opening or the engagement of the clamp (1); the clamp (1) comprises an upper clamp and a lower clamp, the upper clamp and the lower clamp are respectively provided with clamp teeth with the same tooth number and opposite tooth numbers, and the middle parts of the clamp teeth are provided with threading holes: the novel clamping device is characterized in that a sleeve (12) is arranged on the clamp handle (2), an inner sleeve (13) is arranged on the clamp holder (1), the sleeve (12) is rotationally connected with the inner sleeve (13), the clamp handle (2) is connected with the clamp holder (1) through the sleeve (12) and the inner sleeve (13), the clamp holder (1) can rotate relative to the clamp handle (2), the sleeve (12) is hollow and tubular, and one end of the sleeve (12) is fixed on the surface of the clamp handle (2); a rotating shaft (14) is arranged in the sleeve (12), and the rotating shaft (14) is arranged at the axial position of the sleeve (12) and is fixedly connected with the clamp handle (2); the rotating shaft (14) is provided with an inclined plane (15) at the part close to the clamp handle (2); one end of the inner sleeve (13) is fixedly connected with the clamp (1), the other end of the inner sleeve is inserted into the sleeve (12) and is rotationally connected with the rotating shaft (14), and the inner sleeve (13) can slide along the axial direction of the rotating shaft (14); the outer surface of the inner sleeve (13) is attached to the inner surface of the sleeve (12), a plurality of positioning grooves (16) are formed in the outer surface of the inner sleeve (13), the positioning grooves (16) are uniformly distributed on the circumferential wall surface of the inner sleeve (13), ball cavities (17) are formed in the inner surfaces of the sleeve (12) corresponding to the positioning grooves (16), springs (18) are arranged in the ball cavities (17), and positioning balls (19) connected with the springs (18) are arranged at openings of the ball cavities (17); the positioning ball (19) is partially positioned in the ball cavity (17), and is partially positioned outside the ball cavity (17); the inner sleeve (13) is provided with a locking groove (20) on the end surface positioned in the sleeve (12), a plurality of through holes (21) are formed in the side wall of the locking groove (20), the axis of the through holes (21) is perpendicular to the axis of the rotating shaft (14) and is arranged on the same longitudinal surface, and locking steel balls (22) which are in contact with the inclined surface (15) are arranged in the through holes (21); when the inner sleeve (13) slides inwards along the axial direction of the rotating shaft (14), the lower surface of the locking steel ball (22) rolls on the inclined surface (15) until the upper surface of the locking steel ball (22) is in contact with the inner wall of the sleeve (12); a reset spring (23) is arranged between the end face of the inner sleeve (13) and the bottom face of the sleeve (12), the reset spring (23) is sleeved on the rotating shaft (14), one end of the reset spring (23) is in movable contact with the end face of the inner sleeve (13), the other end of the reset spring is in movable contact with the bottom face of the sleeve (12), and a lug (24) is arranged on the end face of the inner sleeve (13).

2. The novel laparoscopic purse-string forceps according to claim 1, characterized in that the number of ball cavities (17) is 2-6 and the number of positioning grooves (16) is 12.

3. The novel laparoscopic purse-string forceps according to claim 1, characterized in that the number of through holes (21) is 2-6.