Tissue retracting and fixing device in laparoscope

Abstract

The utility model discloses a tissue retracting and fixing device in a laparoscope, which belongs to the technical field of medical equipment and comprises a handle, a traction rod, a first steel wire rope and a second steel wire rope. A steel wire rotating disc is hinged into the handle through a first hinge, and a first fixing point and a second fixing point are arranged on the steel wire rotating disc in the circumferential direction. The traction rod is formed by sequentially hinging a plurality of pull rods end to end through a plurality of second hinges. The second hinges are located between the first steel wire rope and the second steel wire rope. The multiple pull rods can achieve the bending and resetting effects through cooperation of the steel wire rotating disc, the first steel wire rope and the second steel wire rope. The traction rod during resetting is a long straight rod piece, so that the traction rod can conveniently extend into complex tissues, the steps of adjusting the angle and the position are simplified, and the bent traction rod can be used for pulling the tissues. The traction equipment is changed from a fixed type to a variable type, so that the operation difficulty is reduced, and the operation efficiency is improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of medical equipment, in particular to a laparoscope intra-tissue retraction and fixing device. Background Art

[0002] Laparoscopic surgery, as a minimally invasive surgical technique, has been widely used in clinical practice. In some cases, the surgical operation requires the retraction of some tissues, local displacement or traction of the target tissue or organ to obtain a better operating field and operating space, thereby ensuring the smooth progress of the operation. For example, for intestinal surgery, it is often necessary to slightly tug on the intestine to facilitate resection, anastomosis or repair.

[0003] In laparoscopic surgery, doctors usually use various surgical auxiliary instruments to complete the operation. In cases where tissues need to be retracted, specially designed traction instruments such as retractors and intestinal hooks are used. However, these instruments are often in a fixed state, and doctors need to constantly adjust the angle and position of the surgical instruments and use special operating techniques to achieve local retraction of the target tissue, which is difficult to operate. Utility Model Content

[0004] The utility model aims to provide a laparoscopic tissue retraction and fixation device to solve the above problems in the prior art.

[0005] Provided is a laparoscopic tissue retraction and fixation device, comprising:

[0006] A handle, wherein a wire rotary disc is hingedly connected to the handle via a first hinge, and the wire rotary disc is provided with a first fixing point and a second fixing point along the circumference thereof;

[0007] A traction rod, wherein the traction rod is formed by a plurality of pull rods hinged end to end in sequence through a plurality of second hinges, one end of the pull rod of the traction rod is fixedly connected to the handle, and the other end of the pull rod of the traction rod is provided with a fixed probe;

[0008] A first steel wire rope, one end of which is fixedly connected to the fixed probe, and the other end of which passes through a plurality of pull rods and is fixedly connected to a first fixed point;

[0009] A second steel wire rope, one end of which is fixedly connected to the fixed probe, and the other end of which passes through a plurality of pull rods and is fixedly connected to a second fixed point;

[0010] The plurality of second hinges are located between the first steel wire rope and the second steel wire rope.

[0011] Furthermore, the number of the pull rods is set to three.

[0012] Furthermore, it also includes a tension spring, a third fixed point is arranged on the wire rotary disc, one end of the tension spring is fixedly connected to the handle, and the other end of the tension spring is fixedly connected to the third fixed point.

[0013] Furthermore, a handle is provided on the wire disc, a notch is provided on the handle, and the handle is located outside the handle after passing through the notch.

[0014] Furthermore, a blocking piece is provided in the handle, and the blocking piece is contactably connected to the wire rotary disc.

[0015] Furthermore, the outer periphery of the wire disc is provided with a tooth surface along the circumferential direction, and the clamping assembly includes a locking block and a transmission assembly. The locking block and the tooth surface are in contactable connection, and the transmission assembly and the locking block are in transmission connection.

[0016] Furthermore, the transmission assembly includes a locking rod, which is slidably connected to the handle, and blocks are provided at both ends of the locking rod, and the contact portion between the locking rod and the locking block is a conical transition structure.

[0017] Compared with the prior art, the beneficial effects of the utility model are:

[0018] The plurality of pull rods can achieve bending and resetting effects through the cooperation of the wire rotary disc, the first wire rope and the second wire rope. The traction rod during resetting is a long straight rod, which is convenient for inserting into complex tissues and simplifies the steps of adjusting the angle and position. The traction rod after bending can pull the tissue. Changing the traction device from a fixed type to a variable type reduces the difficulty of operation and improves the efficiency of surgery. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to facilitate understanding by those skilled in the art, the present invention is further described below in conjunction with the accompanying drawings.

[0020] Figure 1 It is a schematic diagram of the overall structure of a laparoscopic intra-tissue retraction and fixation device;

[0021] Figure 2 A schematic diagram of the structure of a handle provided in an embodiment of the utility model;

[0022] Figure 3 A schematic diagram of the structure of a traction rod provided in an embodiment of the utility model;

[0023] Figure 4 for Figure 2 An enlarged view of the middle blocking part.

[0024] In the figure: 1. handle; 11. first hinge; 12. wire disc; 121. first fixed point; 122. second fixed point; 123. third fixed point; 124. handle; 125. tooth surface; 13. notch; 14. blocking member; 141. locking block; 142. transmission assembly; 1421. locking rod; 1422. blocking block; 2. traction rod; 21. pulling rod; 22. second hinge; 23. fixed probe; 3. first wire rope; 4. second wire rope; 5. tension spring. DETAILED DESCRIPTION

[0025] In order to make the purpose, technical solution and advantages of the utility model more clear, the utility model is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the utility model and are not used to limit the utility model, that is, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. The components of the embodiments of the utility model described and shown in the drawings here can be arranged and designed in various different configurations.

[0026] Therefore, the following detailed description of the embodiments of the utility model provided in the accompanying drawings is not intended to limit the scope of the utility model claimed for protection, but merely represents selected embodiments of the utility model. Based on the embodiments of the utility model, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the utility model.

[0027] See also Figure 1-3 As shown, in the embodiment of the utility model, a laparoscopic tissue retraction and fixing device comprises a handle 1, a traction rod 2, a first steel wire rope 3 and a second steel wire rope 4. A steel wire rotary disk 12 is hinged in the handle 1 through a first hinge 11, and the steel wire rotary disk 12 is respectively provided with a first fixed point 121 and a second fixed point 122 along the circumferential direction. The traction rod 2 is formed by a plurality of pull rods 21 being hinged end to end in sequence through a plurality of second hinges 22. The pull rod 21 at one end of the traction rod 2 is fixedly connected to the handle 1, and a fixed probe 23 is provided on the pull rod 21 at the other end of the traction rod 2. One end of the first steel wire rope 3 is fixedly connected to the fixed probe 23, and the other end of the first steel wire rope 3 passes through the plurality of pull rods 21 and is fixedly connected to the first fixed point 121. One end of the second steel wire rope 4 is fixedly connected to the fixed probe 23, and the other end of the second steel wire rope 4 passes through the plurality of pull rods 21 and is fixedly connected to the second fixed point 122. The plurality of second hinges 22 are located between the first steel wire rope 3 and the second steel wire rope 4.

[0028] The handle 1 is operated by an operator who can manually control the wire disc 12 to rotate in the handle 1. The first fixed point 121 and the second fixed point 122 are spaced a certain distance apart, and the first wire rope 3 and the second wire rope 4 are spaced apart by the first hinge 11, so that after the wire disc 12 rotates, the first wire rope 3 and the second wire rope 4 are in different stress states. That is, when the first steel wire rope 3 is pulled by the first fixed point 121, the first steel wire rope 3 pulls the fixed probe 23 to make several pull rods 21 rotate in the direction of the first steel wire rope 3. At this time, the second steel wire rope 4 is pulled by the fixed probe 23, and the second fixed point 122 relaxes the restriction on the second steel wire rope 4, and the traction rod 2 changes to the traction state; and when the second steel wire rope 4 is pulled by the second fixed point 122, the second steel wire rope 4 pulls the fixed probe 23 to make several pull rods 21 rotate in the direction of the second steel wire rope 4. At this time, the first steel wire rope 3 is pulled by the fixed probe 23, and the first fixed point 121 relaxes the restriction on the first steel wire rope 3, and the traction rod 2 changes to the reset state.

[0029] Since the first steel wire rope 3 and the second steel wire rope 4 are separated by a plurality of second hinges 22, when the first steel wire rope 3 and the second steel wire rope 4 change their stress states, the fixed probe 23 will generate torques of different states and then turn to different directions, driving the plurality of pull rods 21 to rotate in one direction through a chain effect, thereby achieving bending and resetting actions.

[0030] In one embodiment, the maximum rotation angle between the pull rods 21 can be 90°. Therefore, when the number of pull rods 21 is set to three, the pull rods 21 can form a hook shape surrounded on three sides after rotating to the maximum angle, which has high stability when pulling tissue and will not cause tissue unhooking.

[0031] The fixing device also includes a tension spring 5, and the two ends of the tension spring 5 are respectively fixed to the third fixing point 123 and the handle 1. Figure 1 As shown, when the traction rod 2 is in the reset state, the tension spring 5 is slightly tensioned, and the wire rotary disc 12 blocked by the handle 1 remains stable under the tension of the tension spring 5, so the reset state is the normal state of the traction rod 2. Figure 2 As shown, after the wire disc 12 rotates, the traction rod 2 is in a traction state, and the tension spring 5 overcomes the tension force and rotates a certain angle under the drive of the third fixed point 123. At this time, the position of the third fixed point 123 has a tendency to rotate in the opposite direction due to the torque generated by the tension spring 5. When the operator releases the wire disc 12, the wire disc 12 rotates in the direction of the tension spring 5 under the action of the tension spring 5, and the traction rod 2 is automatically reset without manual reset, which simplifies the operation process.

[0032] The wire rotary disc 12 is provided with a handle 124, which is used by an operator to hold and control the state of the traction rod 2, and the wire rotary disc 12 is driven to rotate by pulling the handle 124. The notch 13 provided on the handle 1 provides a rotation space for the handle 124, and the side walls of the notch 13 can prevent the handle 124 from further rotating, so that the rotation angle of the wire rotary disc 12 is limited within a certain range, thereby limiting the rotation angle of the plurality of pull rods 21.

[0033] In one embodiment, the movement of the wire rotary disk 12 is limited by a blocking member 14 between the wire rotary disk 12 and the handle 1. When the blocking member 14 is out of contact with the wire rotary disk 12, the wire rotary disk 12 can rotate normally without resistance, and when the blocking member 14 is in contact with the wire rotary disk 12, the blocking member 14 will block the rotation of the wire rotary disk 12. When the traction rod 2 is in the traction state, the traction rod 2 will not be reset actively or reset by mistake due to the action of the blocking member 14, thereby improving the safety during surgery.

[0034] Specifically, the wire disc 12 is fixed by the cooperation between the outer circumferential tooth surface 125 and the locking block 141. The locking block 141 slides inside the handle 1 through the transmission control of the transmission assembly 142. When the transmission assembly 142 pushes the locking block 141 to contact and engage with the tooth surface 125, the wire disc 12 cannot rotate under the interference of the locking block 141.

[0035] For further information, see Figure 2 and Figure 4 The transmission assembly 142 is composed of a locking rod 1421 as a whole, and the locking rod 1421 slides in a vertical direction relative to the locking block 141 in the handle 1. Both ends of the locking rod 1421 pass through the handle 1 and are respectively provided with a clamping block 1422, which is used to limit the sliding stroke of the locking rod 1421 and facilitate the operator to pull and operate. The contact part between the locking rod 1421 and the locking block 141 is a conical transition structure. When the locking rod 1421 moves to the upper end, the conical rod on the locking rod 1421 squeezes the locking block 141 and pushes the locking block 141 to move toward the tooth surface 125, and the locking block 141 cannot retreat under the block at the maximum outer diameter of the locking rod 1421 rod. When the locking rod 1421 is pulled down, a gap is generated between the locking block 141 and the locking rod 1421. At this time, after the rotating wire rotary disk 12, the locking block 141 retreats under the push of the tooth surface 125 and breaks contact with the tooth surface 125.

[0036] The above contents are merely examples and explanations of the structure of the utility model. The technicians in this technical field may make various modifications or additions to the specific embodiments described or replace them in a similar manner. As long as they do not deviate from the structure of the utility model or exceed the scope defined in the claims, they should all fall within the protection scope of the utility model.

Claims

1. A laparoscopic tissue retraction and fixation device, characterized in that: include: A handle (1), wherein a wire rotary disc (12) is hingedly connected to the handle (1) via a first hinge (11), and the wire rotary disc (12) is provided with a first fixing point (121) and a second fixing point (122) along the circumference thereof; A traction rod (2), wherein the traction rod (2) is formed by a plurality of pull rods (21) being hinged end to end in sequence through a plurality of second hinges (22), the pull rod (21) at one end of the traction rod (2) being fixedly connected to the handle (1), and a fixed probe (23) is provided on the pull rod (21) at the other end of the traction rod (2); A first steel wire rope (3), one end of the first steel wire rope (3) is fixedly connected to a fixed probe (23), and the other end of the first steel wire rope (3) passes through a plurality of pull rods (21) and is fixedly connected to a first fixed point (121); A second steel wire rope (4), one end of the second steel wire rope (4) is fixedly connected to the fixed probe (23), and the other end of the second steel wire rope (4) passes through a plurality of pull rods (21) and is fixedly connected to a second fixed point (122); A plurality of the second hinges (22) are located between the first steel wire rope (3) and the second steel wire rope (4).

2. The laparoscopic tissue retraction and fixation device according to claim 1, characterized in that: The number of the pull rods (21) is set to three.

3. The laparoscopic tissue retraction and fixation device according to claim 1, characterized in that: It also includes a tension spring (5), a third fixed point (123) is provided on the wire rotary disc (12), one end of the tension spring (5) is fixedly connected to the handle (1), and the other end of the tension spring (5) is fixedly connected to the third fixed point (123).

4. The laparoscopic tissue retraction and fixation device according to claim 1, characterized in that: The wire rotary disc (12) is provided with a handle (124), the handle (1) is provided with a notch (13), and the handle (124) passes through the notch (13) and is located outside the handle (1).

5. The laparoscopic tissue retraction and fixation device according to claim 1, characterized in that: A blocking member (14) is also provided in the handle (1), and the blocking member (14) is contactably connected to the wire rotary disc (12).

6. The laparoscopic tissue retraction and fixation device according to claim 5, characterized in that: The outer periphery of the wire rotary disc (12) is provided with a tooth surface (125) along the circumferential direction. The blocking member (14) comprises a locking block (141) and a transmission assembly (142). The locking block (141) and the tooth surface (125) are in contactable connection, and the transmission assembly (142) and the locking block (141) are in transmission connection.

7. The laparoscopic tissue retraction and fixation device according to claim 6, characterized in that: The transmission assembly (142) comprises a locking rod (1421) which is slidably connected to the handle (1). Blocks (1422) are provided at both ends of the locking rod (1421). The contact portion between the locking rod (1421) and the locking block (141) is a conical transition structure.

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