CN215384287U

CN215384287U - Knotting forceps for minimally invasive laparoscopic surgery

Info

Publication number: CN215384287U
Application number: CN202022782185.XU
Authority: CN
Inventors: 刘明
Original assignee: 2nd Affiliated Hospital Of Harbin Medical University
Current assignee: 2nd Affiliated Hospital Of Harbin Medical University
Priority date: 2020-11-26
Filing date: 2020-11-26
Publication date: 2022-01-04
Anticipated expiration: 2030-11-26

Abstract

The utility model provides a knotting forceps for minimally invasive laparoscopic surgery, which solves the problems of unstable holding of knotting forceps clamps and the like and comprises a fixed handle and a movable handle rotationally connected with the fixed handle, wherein an elastic element is arranged between the fixed handle and the movable handle, the movable handle is connected with a reset cylinder, the other end of the reset cylinder is connected with an extension tube mechanism, a forceps holder is fixed at the end head of the extension tube mechanism, the forceps holder is provided with a fixed forceps axially extending relative to the extension tube mechanism, the fixed forceps is rotationally connected with the movable forceps, a connecting block is arranged in the reset cylinder, a reset spring is arranged between the connecting block and the reset cylinder, one end of the connecting block, which is opposite to the extension tube mechanism, is rotationally connected with the movable forceps through a linkage rod mechanism, and the other end of the connecting block is connected with the movable handle through a steel wire mechanism. The utility model has the advantages of good clamping stability, convenient operation and the like.

Description

Knotting forceps for minimally invasive laparoscopic surgery

Technical Field

The utility model belongs to the technical field of medical instruments, and particularly relates to a knotting forceps for minimally invasive laparoscopic surgery.

Background

Laparoscopes are instruments with miniature cameras. Laparoscopic surgery is a procedure that utilizes a laparoscope and its associated instruments. The cold light source is used for providing illumination, the laparoscope lens is inserted into the abdominal cavity, and the digital camera technology is used for leading the image shot by the laparoscope lens to be transmitted to a post-stage signal processing system through an optical fiber and displaying the image on a special monitor in real time. Then, the doctor analyzes and judges the state of the patient through images of different angles of the patient organ displayed on the monitor screen, and performs the operation by using a special laparoscope instrument. In minimally invasive laparoscopic human body surgery, a single-hole type operation channel and a multi-hole type operation channel are provided, the single-hole combined operation channel is a 3-4 cm incision cut in a human body abdominal cavity, the combined operation channel of a single-hole inlet is clamped into the incision, surgical instruments enter the human body abdominal cavity through the combined operation channel, and the incision suturing and knotting are needed to be carried out on tissues in the human body abdominal cavity. The prior art adopts single forceps to tie knots, and has the defects of high knotting difficulty, higher difficulty in single-hole combination operation, complex operation and unsatisfactory operation effect. In addition, the clamp has the problem of unstable clamping, and is easy to fall off during lapping.

In order to solve the defects of the prior art, people have long searched for and put forward various solutions. For example, the chinese patent document discloses a bidirectionally bendable knotting forceps [201020690970.6], which includes a fixed handle, a movable handle, a forceps lever, a runner device, a forceps head seat; the fixed handle is rotationally connected with the movable handle, the rotating wheel device is respectively connected with the fixed handle and the clamp rod, the clamp rod is clamped on the fixed handle, and the clamp head seat is connected with the clamp rod. The clamp comprises a clamp head, a clamp body, a clamp head seat, a clamp handle, a movable clamp, a fixed clamp, a pull rod and a pull rod connecting seat, wherein the fixed clamp is fixed on the clamp head seat; the movable clamp and the fixed clamp are both provided with wire hooking grooves, and the clamp head seat is provided with wire pressing grooves.

The problem that knotting forceps are difficult to operate is solved to a certain extent by the aid of the scheme, but the scheme still has many defects, such as unstable clamping and the like.

Disclosure of Invention

The utility model aims to solve the problems and provides the knotting forceps for the minimally invasive laparoscopic surgery, which is reasonable in design and stable in clamping.

In order to achieve the purpose, the utility model adopts the following technical scheme: this minimal access laparoscopic surgery knotting forceps, including fixed handle and the movable handle who rotates the connection with fixed handle, be provided with elastic element between fixed handle and the movable handle, movable handle is connected with the section of thick bamboo that resets, the section of thick bamboo other end that resets is connected with extension pipe mechanism, extension pipe mechanism end department is fixed with the pincers seat, the pincers seat has the fixed pincers of relative extension pipe mechanism axial extension, fixed pincers rotate with movable pincers to be connected, be provided with the connecting block in the section of thick bamboo that resets, be provided with reset spring between connecting block and the section of thick bamboo that resets, the connecting block passes through the trace mechanism with the relative one end of extension pipe mechanism and rotates with movable pincers to be connected, the connecting block other end passes through steel wire mechanism and is connected with movable handle. Adopt steel wire mechanism and trace mechanism cooperation, transmit the pulling force of activity handle to activity pincers, the pretightning force can be exerted to the steel wire mechanism that has certain flexibility, compares in the transmission of conventional body of rod, can provide bigger clamp force to improve the centre gripping stability when knoing.

In the knotting forceps for minimally invasive laparoscopic surgery, the extension tube mechanism comprises an extension tube base rotatably connected with the reset cylinder, the other end of the extension tube base is fixedly connected with an extension tube body in an inserted manner, and the other end of the extension tube body is fixed with the forceps base. The extension pipe mechanism is used for extending the clamp seat, so that the knotting clamp can go deep into the abdominal cavity for operation.

In the knotting forceps for minimally invasive laparoscopic surgery, the fixed handle, the reset cylinder and the extension tube mechanism are internally provided with linkage channels which are communicated with each other, and the linkage rod mechanism and the steel wire mechanism are arranged in the linkage channels. The linkage channel is used for the linkage rod mechanism and the steel wire mechanism to move along the axial direction, and the movable block avoids abrasion caused by contact of the steel wire mechanism and the linkage channel.

In the knotting forceps for minimally invasive laparoscopic surgery, the linkage rod mechanism comprises a movable cavity arranged in the connecting block, a movable ball is arranged in the movable cavity, a linkage rod body is fixed on the movable ball and is rotatably connected with the movable forceps, and the diameter of the linkage rod body is smaller than the inner diameter of a linkage channel of the extension tube mechanism. The linkage rod body in the linkage rod mechanism can swing relative to the connecting block, so that the linkage rod body and the movable pliers rotate.

In the knotting forceps for minimally invasive laparoscopic surgery, the steel wire mechanism comprises a steel wire main body connected with one end, far away from the linkage rod mechanism, of the connecting block, the steel wire main body is connected with the movable handle, and a locking mechanism is arranged between the middle of the steel wire main body and the fixed handle. The steel wire main body is rotated by the movable handle to pull the connecting block, and a locking mechanism is additionally arranged between the steel wire main body and the connecting block and used for closing and fixing the fixed pliers and the movable pliers.

In the knotting forceps for minimally invasive laparoscopic surgery, the locking mechanism comprises a locking block of which two ends are connected with the steel wire main body, the locking block slides in the axial direction in the linkage channel of the fixed handle, a locking base opposite to the locking block is arranged on the fixed handle, the locking base is in threaded connection with a knob, and a locking groove opposite to a threaded column below the knob is formed in the locking block. After the knob is rotated, the threaded column is inserted into the locking groove, and the linkage rod mechanism keeps fixed so that the fixed pincers and the movable pincers are in a closed state.

In the knotting forceps for minimally invasive laparoscopic surgery, the movable handle is provided with the accommodating cavity, and the accommodating cavity is mutually inserted with the arc-shaped limiting part on the fixed handle. After the arc-shaped limiting part is inserted into the accommodating cavity, the relative rotation range of the movable handle and the fixed handle is limited.

In the knotting forceps for minimally invasive laparoscopic surgery, the outer side of the reduction cylinder is in a fusiform shape, and anti-skid stripes are distributed on the surface of the reduction cylinder. The resetting cylinder is used for holding in the operation process, and the fusiform surface is distributed with anti-skid stripes for increasing friction force, so as to avoid hand slipping during knotting.

In the knotting forceps for minimally invasive laparoscopic surgery, wavy clamping grooves are distributed on one side of the fixed forceps, which is opposite to the movable forceps, and the clamping grooves on the fixed forceps are meshed with the clamping grooves on the movable forceps. Compared with a straight drill rod opening, the bent drill rod opening increases a clamping surface and avoids falling off during clamping.

In the knotting forceps for minimally invasive laparoscopic surgery, one side of the fixed forceps and/or the movable forceps, which is far away from each other, is provided with a wire pushing hook groove, and the opening direction of the wire pushing hook groove faces to one end, which is far away from the extension pipe mechanism. The thread pushing hook groove pushes the suture thread into the abdominal cavity for suturing or knotting during the operation.

Compared with the prior art, the utility model has the advantages that: the linkage rod mechanism and the steel wire mechanism are combined, and a certain pretightening force can be applied, so that the movable clamp and the fixed clamp are clamped more stably; the locking mechanism is locked after the movable clamp and the fixed clamp are closed, so that an operator can conveniently perform other work; the jaw between the fixed pliers and the movable pliers is a wavy clamping groove which is meshed with each other, and the jaws are not easy to fall off after clamping.

Drawings

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is a structural cross-sectional view of the present invention;

FIG. 3 is an enlarged cross-sectional view of the clamp base of the present invention;

FIG. 4 is a schematic view of the construction of the connector block of the present invention;

in the figure, a fixed handle 1, a linkage channel 11, a movable handle 2, an accommodating cavity 21, an arc-shaped limiting part 22, a reset cylinder 3, a connecting block 31, a reset spring 32, an anti-skid stripe 33, an extension pipe mechanism 4, an extension pipe base 41, an extension pipe body 42, a clamp seat 5, a fixed clamp 6, a clamping groove 61, a wire pushing hook groove 62, a movable clamp 7, a linkage rod mechanism 8, a movable cavity 81, a movable sphere 82, a linkage rod body 83, a steel wire mechanism 9, a steel wire main body 91, a locking mechanism 92, a locking block 93, a locking base 94, a knob 95 and a locking groove 97.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.

As shown in fig. 1-4, the knotting forceps for minimally invasive laparoscopic surgery comprises a fixed handle 1 and a movable handle 2 rotatably connected with the fixed handle 1, an elastic element is arranged between the fixed handle 1 and the movable handle 2, the movable handle 2 is connected with a resetting barrel 3, the other end of the resetting barrel 3 is connected with an extension pipe mechanism 4, a clamp seat 5 is fixed at the end of the extension pipe mechanism 4, the clamp seat 5 is provided with a fixed clamp 6 axially extending relative to the extension pipe mechanism 4, the fixed clamp 6 is rotatably connected with the movable clamp 7, a connecting block 31 is arranged in the resetting barrel 3, a reset spring 32 is arranged between the connecting block 31 and the resetting barrel 3, one end of the connecting block 31, which is opposite to the extension pipe mechanism 4, is rotatably connected with the movable clamp 7 through a linkage rod mechanism 8, and the other end of the connecting block 31 is connected with the movable handle 2 through a steel wire mechanism 9. The movable handle 2 is broken off, so that the end of the movable handle 2 pulls the steel wire mechanism 9, the connecting block 31 and the linkage rod mechanism 8 are driven to pull the movable clamp 7, and a certain pre-tightening force exists between the steel wire mechanism 9 and the linkage rod mechanism 8 in a conventional state.

Specifically, the extension pipe mechanism 4 includes an extension pipe base 41 rotatably connected with the reset cylinder 3, an extension pipe body 42 is fixedly inserted into the other end of the extension pipe base 41, and the other end of the extension pipe body 42 is fixed to the clamp base 5. The extension tube base 41 of the extension tube mechanism 4 is arranged between the reset cylinder 3 and the extension tube body 42, and the extension tube body 42 with a proper length is selected and matched according to actual needs.

In depth, a linkage channel 11 which is communicated with each other is arranged in the fixed handle 1, the reset barrel 3 and the extension pipe mechanism 4, and a linkage rod mechanism 8 and a steel wire mechanism 9 are arranged in the linkage channel 11. The linkage channel 11 penetrates through the whole knotting forceps, and the linkage rod mechanism 8 and the steel wire mechanism 9 slide in the linkage channel 11.

Further, the linkage mechanism 8 includes a movable cavity 81 disposed in the connecting block 31, a movable ball 82 is disposed in the movable cavity 81, a linkage rod 83 is fixed to the movable ball 82, the linkage rod 83 is rotatably connected to the movable clamp 7, and a diameter of the linkage rod 83 is smaller than an inner diameter of the linkage channel 11 of the extension pipe mechanism 4. The movable ball 82 rotates in the movable cavity 81, the linkage rod 83 swings freely relatively along with the movable ball 82, and the connected movable pliers 7 swings in a single direction.

Furthermore, the steel wire mechanism 9 comprises a steel wire main body 91 connected with one end of the connecting block 31 far away from the linkage mechanism 8, the steel wire main body 91 is connected with the movable handle 2, and a locking mechanism 92 is arranged between the middle part of the steel wire main body 91 and the fixed handle 1. The wire main bodies 91 are provided at both ends of the lock mechanism 92, and the movable handle 2 pulls the wire main bodies 91, whereby the lock mechanism 92 slides.

In addition, the locking mechanism 92 includes a locking block 93 having both ends connected to the wire body 91, the locking block 93 slides in the axial direction in the interlocking passage 11 of the fixed handle 1, a locking base 94 is provided on the fixed handle 1 to be opposed to the locking block 93, a knob 95 is screwed to the locking base 94, and a locking groove 97 is provided on the locking block 93 to be opposed to a threaded post 96 below the knob 95.

Meanwhile, the movable handle 2 is provided with an accommodating cavity 21, and the accommodating cavity 21 is mutually inserted with the arc-shaped limiting part 22 on the fixed handle 1. The arc-shaped limiting part 22 and the accommodating cavity 21 are attached to rotate, and the center of the arc-shaped limiting part 22 and the rotating connection part of the movable handle 2 and the fixed handle 1 are positioned at the same center.

Visibly, the outer side of the reset cylinder 3 is in a fusiform shape, and anti-skid stripes 33 are distributed on the surface. When the hand is held, the reset cylinder 3 is attached to the palm, and the reticular anti-slip stripes 33 on the surface prevent the reset cylinder 3 from sliding.

Obviously, the opposite sides of the fixed jaw 6 and the movable jaw 7 are distributed with wavy clamping grooves 61, and the clamping grooves 61 on the fixed jaw 6 are engaged with the clamping grooves 61 on the movable jaw 7. After the fixed forceps 6 and the movable forceps 7 are clamped, the knotting forceps are pushed and pulled to complete surgical suturing or knotting.

Preferably, the side of the fixed clamp 6 and/or the movable clamp 7 away from each other is provided with a wire pushing hook groove 62, and the opening direction of the wire pushing hook groove 62 faces to the end away from the extension pipe mechanism 4. The suture pushing hook groove 62 pushes the suture into the operation opening, and the edge of the suture pushing groove is rounded to prevent the suture from scratching soft tissues.

In summary, the principle of the present embodiment is: adopt steel wire mechanism 9 and trace mechanism 8 transmission activity handle 2's pulling force, wherein steel wire mechanism 9 can exert the pretightning force in order to obtain best clamping-force size, and it is not hard up when avoiding knotting pincers to centre gripping.

The specific embodiments described herein are merely illustrative of the spirit of the utility model. Various modifications or additions may be made to the described embodiments or alternatives may be employed by those skilled in the art without departing from the spirit or ambit of the utility model as defined in the appended claims.

Although terms such as the fixed handle 1, the linkage channel 11, the movable handle 2, the accommodating cavity 21, the arc-shaped limiting portion 22, the reset cylinder 3, the connecting block 31, the reset spring 32, the anti-slip stripe 33, the extension pipe mechanism 4, the extension pipe base 41, the extension pipe body 42, the clamp seat 5, the fixed clamp 6, the clamping groove 61, the wire pushing hook groove 62, the movable clamp 7, the linkage rod mechanism 8, the movable cavity 81, the movable ball 82, the linkage rod body 83, the steel wire mechanism 9, the steel wire body 91, the locking mechanism 92, the locking block 93, the locking base 94, the knob 95, and the locking groove 97 are used more often, the possibility of using other terms is not excluded. These terms are used merely to more conveniently describe and explain the nature of the present invention; they are to be construed as being without limitation to any additional limitations that may be imposed by the spirit of the present invention.

Claims

1. The knotting forceps for minimally invasive laparoscopic surgery comprises a fixed handle (1) and a movable handle (2) rotatably connected with the fixed handle (1), wherein an elastic element is arranged between the fixed handle (1) and the movable handle (2), and the knotting forceps is characterized in that the movable handle (2) is connected with a resetting cylinder (3), the other end of the resetting cylinder (3) is connected with an extension pipe mechanism (4), the end of the extension pipe mechanism (4) is fixedly provided with a forceps holder (5), the forceps holder (5) is provided with a fixed forceps (6) which extends axially relative to the extension pipe mechanism (4), the fixed forceps (6) and the movable forceps (7) are rotatably connected, a connecting block (31) is arranged in the resetting cylinder (3), a reset spring (32) is arranged between the connecting block (31) and the resetting cylinder (3), and one end, opposite to the extension pipe mechanism (4), of the connecting block (31) and the movable forceps (4) are rotatably connected through a linkage rod mechanism (8) and the movable forceps (8) (7) The other end of the connecting block (31) is connected with the movable handle (2) through a steel wire mechanism (9).

2. The knotter forceps for minimally invasive laparoscopic surgery according to claim 1, wherein the extension tube mechanism (4) comprises an extension tube base (41) rotatably connected with the reduction cylinder (3), an extension tube body (42) is fixedly inserted into the other end of the extension tube base (41), and the other end of the extension tube body (42) is fixed with the forceps holder (5).

3. The knotting forceps for minimally invasive laparoscopic surgery according to claim 1 or 2, characterized in that linkage channels (11) communicated with each other are arranged in the fixed handle (1), the reset cylinder (3) and the extension tube mechanism (4), and the linkage rod mechanism (8) and the steel wire mechanism (9) are arranged in the linkage channels (11).

4. The knotting forceps for minimally invasive laparoscopic surgery according to claim 3, wherein the linkage mechanism (8) comprises a movable cavity (81) arranged in the connecting block (31), a movable sphere (82) is arranged in the movable cavity (81), a linkage rod body (83) is fixed to the movable sphere (82), the linkage rod body (83) is rotatably connected with the movable forceps (7), and the diameter of the linkage rod body (83) is smaller than the inner diameter of the linkage channel (11) of the extension tube mechanism (4).

5. The knotting forceps for minimally invasive laparoscopic surgery according to claim 4, characterized in that the steel wire mechanism (9) comprises a steel wire main body (91) connected with one end of the connecting block (31) far away from the linkage mechanism (8), the steel wire main body (91) is connected with the movable handle (2), and a locking mechanism (92) is arranged between the middle part of the steel wire main body (91) and the fixed handle (1).

6. The knotting forceps for minimally invasive laparoscopic surgery according to claim 5, wherein the locking mechanism (92) comprises a locking block (93) with two ends connected with the steel wire main body (91), the locking block (93) slides in the linkage channel (11) of the fixed handle (1) along the axial direction, a locking base (94) opposite to the locking block (93) is arranged on the fixed handle (1), the locking base (94) is in threaded connection with a knob (95), and a locking groove (97) opposite to a threaded column (96) below the knob (95) is formed in the locking block (93).

7. The knotting forceps for minimally invasive laparoscopic surgery according to claim 1, characterized in that the movable handle (2) is provided with an accommodating cavity (21), and the accommodating cavity (21) is inserted with the arc-shaped limiting part (22) on the fixed handle (1).

8. The knotting forceps for minimally invasive laparoscopic surgery according to claim 1, characterized in that the outside of the reduction cylinder (3) is fusiform and the surface of the reduction cylinder is distributed with anti-skid stripes (33).

9. The knotting forceps for minimally invasive laparoscopic surgery according to claim 1, wherein wavy holding grooves (61) are distributed on one side of the fixed forceps (6) opposite to the movable forceps (7), and the holding grooves (61) on the fixed forceps (6) are engaged with the holding grooves (61) on the movable forceps (7).

10. The knotting forceps for minimally invasive laparoscopic surgery according to claim 9, characterized in that the side of the fixed forceps (6) and/or the movable forceps (7) away from each other is provided with a wire pushing hook groove (62), and the opening direction of the wire pushing hook groove (62) faces to the end away from the extension pipe mechanism (4).