CN108836411B - Surgical instrument for realizing single liver transplantation liver repair operation - Google Patents

Abstract

The utility model provides a realize single liver transplantation and repair surgical instruments of liver art, including scalable vascular clamp of magnetic location, collapsible extension board and repair the liver basin, scalable vascular clamp of magnetic location mainly comprises circular permanent magnet, the nylon line, scalable admission machine and vascular clamp, collapsible extension board mainly comprises extension board and the basement board of taking magnetism stainless steel material through folding device connection, repair the liver basin and be the basin body of taking the side edge of taking magnetism stainless steel material, have square pinhole second on the side edge, insert square pinhole first and square pinhole second realization collapsible extension board and repair the connection of liver basin fixedly through the bolt. The invention can assist the operator to pull and expose the operation field in the liver repair operation, assist the liver repair operator to perform operation, reduce the number of people required by the operation and improve the operation precision. In addition, the system has the characteristics of small volume, no occupation of operation space in liver repair operation, convenience in carrying during transportation and the like.

Description

A surgical instrument for single-person liver transplantation and liver repair

Technical field

The invention belongs to the technical field of medical devices, and particularly relates to a surgical instrument for realizing single-person liver transplantation and liver repair.

Background technique

Liver transplantation is currently the preferred treatment for end-stage liver disease. Since its implementation in the 1960s, it has developed rapidly throughout the world and in my country. The liver transplantation process is divided into four parts: liver harvesting, liver trimming, liver preservation in vitro, and liver implantation. Usually, during the liver trimming process, two assistants are required to assist the surgeon in pulling and exposing the tissue to provide the surgeon with a certain tension and a good surgical field of view. However, since liver harvesting and kidney harvesting are often performed at the same time, assistants still need to assist renal transplant physicians in perfusing the kidneys, so there is often a problem of insufficient manpower during liver repair surgery.

Summary of the invention

In order to overcome the shortcomings of the above-mentioned prior art, the purpose of the present invention is to provide a surgical instrument for single liver transplantation and liver repair, which can assist the surgeon to pull and expose the surgical field during the liver repair, assist the surgeon to perform the surgical operation, and improve the accuracy of the surgical operation while reducing the number of people required for the operation. In addition, the system is small in size, does not occupy the surgical operation space during the liver repair, and is easy to carry during transportation.

In order to achieve the above objects, the technical solution adopted by the present invention is:

A surgical instrument for realizing single-person liver transplantation and liver repair, which is characterized by including:

The magnetic positioning retractable blood vessel clamp 1 is mainly composed of a circular permanent magnet 6, a nylon thread 7, a retractable thread retracting device 8 and a blood vessel clamp 9. The blood vessel clamp 9 is set at one end of the nylon thread 7, and the other end of the nylon thread 7 One end is connected to the retractable wire retracting device 8, and the circular permanent magnet 6 is arranged on the retractable wire retracting device 8;

The foldable extension plate 2 is mainly composed of an extension plate 10 and a base plate 11 made of magnetic stainless steel. The extension plate 10 and the base plate 11 are connected by a folding device 12. A square pin hole 13 is provided in the center of the base plate 11.

The liver repair basin 3 is a basin 14 made of magnetic stainless steel with a side edge. There is a square pin hole 15 on the side edge. The pin 4 is inserted into the square pin hole 13 and the square pin hole 2 15 to realize a foldable extension plate. The connection between 2 and liver repair basin 3 is fixed.

The telescopic wire retracting device 8 is internally composed of a flat scroll spring and a pulling wire. The outer casing is made of stainless steel, the flat scroll spring is made of stainless steel, and the pulling wire is a nylon wire 7 with a length of about 30 mm.

The circular permanent magnet 6 and the telescopic cord retracting device 8 are combined with a high-adhesion acrylic glue.

The retractable wire take-up device 8 provides a pulling force of 0.5 to 2 Newtons.

The folding device 12 realizes the folding function through an internal torsion spring.

During use, the circular permanent magnet 6 is anchored on the extension plate 10 through magnetic force, and the pulling angle can be changed by adjusting the anchoring height.

The angle between the base plate 11 and the extension plate 10 can be 0-270 degrees by adjusting the folding device 12 .

The basin body 14 has an upper edge, and there are several square pin holes 15 distributed on the upper edge.

Compared with the prior art, the beneficial effects of the present invention are:

1. The magnetically positioned retractable vascular clamp can completely replace manual traction during surgery, and can be converted from a traditional three-person operation to a single-person operation, greatly saving manpower;

2. The base plate of the foldable extension plate is fixed to the side edge of the liver repair basin by a pin. The extension plate serves as the positioning site of the magnetic positioning retractable vascular clamp. The angle between the extension plate and the base plate can be adjusted according to the traction angle required by the surgeon, and the adjustment range is 0 to 270 degrees.

3. The magnetic positioning retractable vascular clamp relies on magnets to be positioned on the extension plate. The magnetic positioning position can be fine-tuned according to the pulling angle required by the surgeon. In addition, the pulling strength can be adjusted by changing the length of the telescopic wire. When the pulling strength is not enough, Without damaging the tissue, the traction can fully expose the surgical field and provide tension for the surgical operation.

Description of drawings

Figure 1 is a schematic structural diagram of the entire system of the present invention.

FIG. 2 is a schematic structural diagram of the magnetically positioned retractable vascular clamp of the present invention.

FIG. 3 is a schematic structural diagram of a foldable extension plate of the present invention.

Figure 4 is a schematic structural diagram of the liver repair basin of the present invention.

Figure 5 is a schematic diagram of the operation of single-person liver transplantation and liver repair using the device of the present invention.

Detailed ways

The embodiments of the present invention will be described in detail below with reference to the drawings and examples.

Magnetic positioning instruments are an important direction in magnetic surgery research. They utilize the characteristics of magnetic materials that can generate force through direct or indirect contact to achieve spatial positioning of functional modules. The advantage of magnetic positioning equipment is that the positioning device is simple in design and does not need to occupy much space. At the same time, it is easy to change the positioning position, allowing the functional module to move flexibly in the work space. Previously, research on magnetic positioning instruments has been focused on laparoscopic instruments, aiming to reduce the number or diameter of laparoscopic poke cards and improve the minimally invasive nature of surgery through magnetic positioning of laparoscopic instruments. Therefore, designing a compact magnetic positioning device whose grasping accuracy can be adjusted by the liver repair operator to pull and fix the liver and surrounding tissues can reduce manpower and greatly improve the efficiency of liver repair.

Based on the above ideas, the overall structure of the present invention is shown in Figure 1, which consists of two to four magnetically positioned retractable blood vessel clamps 1, two to four foldable extension plates 2, and a liver repair basin 3.

The magnetic positioning retractable blood vessel clamp 1 is shown in Figure 2 and consists of four basic components: a circular permanent magnet 6, a nylon thread 7, a retractable wire retracting device 8 and a blood vessel clamp 9. Each magnetic positioning retractable blood vessel clamp is highly simulated With human hands, the length of the nylon telescopic wire can be adjusted according to the traction force required for the operation. The pulling force is controlled between 0.5 and 2 N, which can ensure that the tissue is not damaged and sufficient pulling tension is provided; at the same time, by adjusting the position of the magnet on the extension plate 10, Change the pulling angle.

The foldable extension plate 2 is shown in Figure 3 and consists of an extension plate 10 and a base plate 11. The two stainless steel plates are connected by a folding device 12. The extension plate 10 provides a positioning site for the magnet 6 that magnetically positions the retractable blood vessel clamp 1 . The magnetic positioning binding force is controlled at about 5 N, which ensures that the magnetic positioning will not fall off easily during the liver repair operation, and the operator can adjust the positioning position at will according to the pulling angle requirements. The function of the base plate 11 is to fix the extension plate 10 on the side edge 14 of the liver repair basin. The square pin hole 13 in the center and the square pin hole 15 of the same size on the side edge 14 of the liver repair basin are fixed by the pin 4 to ensure firm fixation. There will be no rotational displacement between the plate and the liver repair basin. In addition, there is an angle of 0-270 degrees between the base plate 11 and the extension plate 10, and this angle can be adjusted through the folding device 12, thereby providing more angle options for pulling.

The structure of the liver repair basin 3 in the present invention is shown in Figure 4. The main material is magnetic stainless steel, and the structure is a basin body with side edges 14. The liver repair surgery can be performed in the basin. The square pin hole 15 on the side edge 4 functions as described above.

The usage process of the present invention is shown in Figure 5. During the liver repair process, the liver 5 is placed in the basin, and the suprahepatic inferior vena cava 16 and the infrahepatic inferior vena cava 17 are fixed by using two vascular clamps 9 on the two retractable vascular clamps 1 and stretched. Nylon thread 7 anchors the circular permanent magnet 6 on the extension plate 10. Adjust the anchoring height on the extension plate 10 to adjust the pulling angle. Adjust the stretching length of the nylon thread 7 to adjust the pulling force, thereby making the liver The superior and inferior vena cava 16 and the infrahepatic inferior vena cava 17 remain horizontal and have tension to facilitate trimming.

Claims (3)

1. A surgical instrument for single-person liver transplantation and liver repair, which is characterized by including: The magnetic positioning retractable blood vessel clamp (1) is mainly composed of a circular permanent magnet (6), a nylon wire (7), a retractable wire retracting device (8) and a blood vessel clamp (9). Among them, the blood vessel clamp (9) is set At one end of the nylon thread (7), the other end of the nylon thread (7) is connected to the telescopic thread take-up device (8), and the circular permanent magnet (6) is arranged on the telescopic thread take-up device (8); the telescopic thread take-up device (8) The take-up device (8) is internally composed of a flat scroll spring and a pulling wire. The outer casing is made of stainless steel, the flat scroll spring is made of stainless steel, and the pulling wire is a nylon thread (7); the telescopic taking-up device (8) ) provides a pulling force of 0.5 to 2 N; The foldable extension plate (2) is mainly composed of an extension plate (10) made of magnetic stainless steel and a base plate (11). The extension plate (10) and the base plate (11) are connected through a folding device (12), and the base plate (11) There is a square pin hole (13) in the center of 11); the folding device (12) realizes the folding function through the internal torque spring; adjust the folding device (12) so that the base plate (11) and the extension plate (10) There is an angle of 0-270 degrees; when in use, the circular permanent magnet (6) is anchored on the extension plate (10) through magnetic force, and the pulling angle can be changed by adjusting the anchoring height; The liver repair basin (3) is a basin body (14) made of magnetic stainless steel with a side edge. There are two square pin holes (15) on the side edge, and the square pin holes one (13) and one (13) are inserted through the latch (4). Square pin hole two (15) realizes the connection and fixation of the foldable extension plate (2) and the liver repair basin (3). 2. The surgical instrument for realizing single-person liver transplantation and liver repair according to claim 1, characterized in that the circular permanent magnet (6) and the retractable wire retracting device (8) are made of acrylic with high adhesion force. glue combined. 3. The surgical instrument for realizing single-person liver transplantation and liver repair according to claim 1, characterized in that the basin (14) has an upper edge, and there are several square pin holes (15) distributed on all sides. the above edge.