Laparoscopic liver retraction device

Abstract

This laparoscopic liver traction device relates to the field of medical device technology and includes a core, a sleeve, a handle, and a traction device. The traction device is installed at the top of the core, and the handle is connected to the bottom of the core. The sleeve is fitted over the outside of the core. During abdominal insertion, the core with the traction device is inserted into the sleeve, and the traction device is inside the sleeve, contacting the inner wall of the sleeve. By holding the sleeve, the entire traction device is pulled into the abdomen until it reaches the liver. The sleeve is then pulled back towards the handle, and the sleeve is pulled back to the tail end of the core. At this time, the traction device at the front end of the core is released, and the traction device is fitted over the liver. By holding the handle of the sleeve and the handle of the core, the traction device is moved by moving the core, ultimately achieving the effect of traction on the right liver. The device is simple, easy to operate, and unlikely to cause collateral damage. It does not interfere with the use of a trocar and has the characteristics of simple structure and convenient use.

Description

Technical Field

[0001] This technical field relates to the field of medical device technology, and in particular to a laparoscopic liver traction device. Background Technology

[0002] With advancements in surgical techniques, various surgical procedures can now be performed laparoscopically. However, retracting the thickened right lobe of the liver to facilitate surgical operations in the retrohepatic region remains a challenge. Currently, this is achieved using the assistant's hands, which is time-consuming, laborious, and prone to causing collateral liver damage.

[0003] Utility model patent CN202022596994.1 relates to the field of medical device technology, specifically a traction device for laparoscopic liver surgery. The device includes an outer tube with an internal thread. A movable rod is inserted at the bottom of the outer tube, and the movable rod has an external thread that connects to the internal thread. A first protrusion is connected to the bottom of the movable rod, and a handle is attached to the first protrusion. A fixed seat is connected to the upper end of the movable rod, and a traction mechanism is rotatably connected to the fixed seat. A first groove is formed at the upper inner end of the outer tube, and a sealing ring is connected to the first groove. A second groove is formed on the outer side of the outer tube, and anti-slip textures are connected within the second groove. This utility model uses the handle to rotate the movable rod. The external and internal threads mesh, causing the movable rod to move slowly upwards. This movement of the movable rod pushes the traction mechanism to move slowly, causing the traction end of the traction mechanism to extend out of the outer tube. The traction end of the traction mechanism pulls the liver. The traction mechanism extends slowly, preventing damage to the liver. This application uses a threaded connection to move the movable rod, but the disadvantages of the threaded connection are that the threads are prone to wear and stripping, and the structure is complex and inconvenient to use. Utility Model Content

[0004] The purpose of this invention is to provide a laparoscopic liver traction device to solve the problems of difficult surgical operation of turning the right liver during laparoscopic surgery and the easy occurrence of secondary liver damage in the prior art.

[0005] The technical solution of this utility model is: a laparoscopic liver traction device, including a core 1, a sleeve 2, a handle 3, and a traction device 4, wherein the traction device 4 is installed at the top of the core 1, the lower end of the core 1 is connected to the handle 3, the sleeve 2 is sleeved on the outside of the core 1, the outer diameter of the core is smaller than the inner diameter of the sleeve, and the two are fitted with a clearance.

[0006] The traction device 4 includes two connecting pieces 41 and a sleeve 42. The front end of the tube core 1 is provided with a strip-shaped hole that matches the thickness of the two connecting pieces 41. The two connecting pieces 41 are inserted into the tube core 1 and fixed inside the tube core 1 by pins. The two connecting pieces 41 are respectively fitted with connecting sleeves 42. The connecting sleeve at the front end of the left connecting piece 41 is about 5cm longer, and the right connecting piece 41 is inserted into the left front connecting sleeve 42. Then the connecting sleeve 42 is pasted or plastic-sealed onto the connecting piece 41 to form a retractable traction device.

[0007] The connecting piece 41 is a thin sheet of stainless steel, pressed into a bent structure.

[0008] The two connecting pieces 41 are made of the same material and have the same width, thickness and length.

[0009] The beneficial technical effects of this utility model are as follows: This utility model is applicable to traction, lifting, and suspension of the liver that interferes with or obstructs the surgical field during laparoscopic surgery. Upon entering the abdomen, the core tube with the traction device 4 is inserted into the sleeve 2. The traction device 4 is inside the sleeve 2, contacting the inner wall of the sleeve. Holding the sleeve 2, the entire traction device is driven into the abdomen and reaches the liver. The sleeve 2 is pulled back towards the handle, pulling the sleeve 2 back to the tail end of the core tube 1. At this time, the traction device 4 at the front end of the core tube 1 is released, and the traction device 4 is placed around the liver. Holding the sleeve 2 and the handle of the core tube 1, the traction device 4 is moved by moving the core tube 1, ultimately achieving the effect of traction on the right liver. The device is simple, easy to operate, and can also be used for traction of other large tissues (pancreas and kidneys). It is less likely to cause collateral damage, does not interfere with the use of a trocar, and has the characteristics of simple structure and convenient use. Attached Figure Description

[0010] Figure 1 This is a schematic diagram of the released state structure of this utility model.

[0011] Figure 2 This is a schematic diagram of the core structure of this utility model.

[0012] Figure 3 This is a schematic diagram of the sleeve structure of this utility model.

[0013] Figure 4 This is a schematic diagram of the unreleased traction device of this utility model.

[0014] Figure 5 This is a schematic diagram of the traction device of this utility model. Detailed Implementation

[0015] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model. Example 1

[0016] The laparoscopic liver traction device includes a core 1, a sleeve 2, a handle 3, and a traction device 4. The traction device 4 is installed at the top of the core 1, and the handle 3 is connected to the lower end of the core 1. The sleeve 2 is fitted over the outside of the core 1, and the outer diameter of the core is smaller than the inner diameter of the sleeve, with a clearance fit between the two. The traction device 4 includes two connecting pieces 41 and a connecting sleeve 42. The two connecting pieces 41 are installed inside the core 1 by pins to fix the traction device 4, and the two connecting pieces 41 are connected by the connecting sleeve 42.

[0017] When using, please refer to the appendix. Figure 4 Insert the core with traction device 4 into the sleeve 2. The traction device 4 is inside the sleeve 2 and contacts the inner wall of the sleeve. Hold the handle of the sleeve 2 and the core 1 to drive the entire traction device into the abdomen and reach the liver. Pull the sleeve 2 back towards the handle. The sleeve 2 is pulled back to the tail end of the core 1. At this time, the traction device 4 at the front end of the core 1 is released. The traction device 4 is wrapped around the liver. Hold the handle of the sleeve 2 and the handle of the core 1. Move the traction device 4 by moving the core 1. Finally, the right liver is pulled. The device is simple and easy to operate. It can also be used to pull other large tissues (pancreas and kidneys). It is not easy to cause collateral damage and does not hinder the use of trocar. It has the characteristics of simple structure and convenient use.

Claims

1. A laparoscopic liver traction device, comprising a tube core (1), a tube sleeve (2), a handle (3), and a traction device (4), characterized in that: The traction device (4) is installed at the top of the tube core (1). The lower end of the tube core (1) is connected to the handle (3). The tube sleeve (2) is fitted on the outside of the tube core (1). The outer diameter of the tube core (1) is smaller than the inner diameter of the sleeve (2). The two are fitted with a clearance. The traction device (4) includes two connecting pieces (41) and a connecting tube sleeve (42). The front end of the tube core (1) is provided with a strip hole, which fits the thickness of the two connecting pieces (41) together. The two connecting pieces (41) are inserted into the tube core (1) and fixed inside the tube core (1) by a pin. The two connecting pieces (41) are fitted with connecting tube sleeves (42) respectively. The front end of the left connecting piece (41) is about 5cm longer than the tube sleeve. The right connecting piece (41) is inserted into the front end of the left connecting tube sleeve (42). Then the connecting tube sleeve (42) is pasted or plastic-sealed onto the connecting piece (41) to form a retractable traction device. The connecting piece (41) is a thin sheet of stainless steel material, which is pressed into a bent structure.

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