Wound traction device for hepatobiliary surgery

Abstract

The invention relates to the technical field of surgical instruments, in particular to a wound traction device for hepatobiliary surgery, which comprises two oppositely distributed deformation rods and two oppositely distributed connectors, two ends of each deformation rod are connected with the two connectors, the deformation rods are respectively linear and arc-shaped in a contraction state and an extension state, and the deformation rods are connected with the connectors. When the deformation rods are arc-shaped, the two deformation rods can be spliced into a ring shape; by adopting the mode that the two deformation rods deform to open the wound, automatic traction work on the wound can be achieved, manual traction is not needed, and therefore the number of operation personnel is effectively reduced, the physical burden of medical staff is relieved, traction stability can be improved, the view position and size of the wound can be stable, and the operation efficiency is improved. Therefore, a good operation environment can be conveniently provided for doctors.

Description

Technical Field

[0001] This invention relates to the technical field of surgical instruments, and in particular to a wound traction device for hepatobiliary surgery. Background Art

[0002] In the field of hepatobiliary surgery, precise and adequate surgical field exposure is the key cornerstone of surgical success. The liver and biliary system are located deep in the right upper abdomen of the human body. They have a complex structure, rich blood supply, and are adjacent to important blood vessels (such as the inferior vena cava and portal vein) and organs (such as the stomach, duodenum, and pancreas). When performing surgeries such as partial liver resection, bile duct exploration, choledochoenterostomy, complex bile duct reconstruction, or radical resection of hepatobiliary tumors, surgeons often need to deal with lesions located deep in the field and with limited operating space.

[0003] To obtain a clear surgical field and a safe operating space, surgeons must continuously and steadily retract the edges of the surgical incision and the surrounding tissues covering or obscuring the target area. This physical retraction of the wound and surrounding tissues is known as "wound traction." Traditional traction methods rely entirely on surgical assistants manually operating retractors and other instruments. Especially in delicate procedures such as liver mobilization, hilar dissection, second hilar management, or deep bile duct anastomosis, continuous and appropriate traction is crucial for fully exposing deep structures, avoiding accidental damage to blood vessels and nerves, and ensuring smooth surgical procedures. However, this traditional manual traction method consumes a lot of physical strength and requires multiple people to work together to pull and open the wound in different directions. This occupies a lot of space around the operating table, affecting the surgeon's normal operation. Furthermore, as the operation progresses and physical strength is depleted, the stability of manual traction gradually decreases, which can easily affect the surgical field. Summary of the Invention

[0004] To solve the above-mentioned technical problems, the present invention provides a wound traction device for hepatobiliary surgery, the specific technical solution of which is as follows: The present invention provides a wound traction device for hepatobiliary surgery, comprising two oppositely distributed deformable rods and two oppositely distributed connecting bodies. The two ends of each deformable rod are connected to the two connecting bodies. The deformable rods are linear in their contracted state and arc-shaped in their extended state. When the deformable rod is arc-shaped, the two deformable rods can be spliced ​​together to form a ring. The deformable rod includes several storage frames, a telescopic hose located between two adjacent storage frames, and a clamping structure installed at the bottom of the storage frame. A core plate is provided in the middle of the storage frame, and the core plate is connected to the telescopic hose. The inside of the storage frame is used to store the telescopic hose in a contracted state. When the telescopic hose is inflated and extended, its shape is arc-shaped. The clamping structure is used to clamp wound tissue.

[0005] Furthermore, when the deformable rod is straight, the two deformable rods are parallel and fit together, and the positions of several clamping structures on the two deformable rods are staggered and collinear.

[0006] Furthermore, the connector includes an outer frame and two connecting columns mounted on the outer frame. The connecting columns are hollow and communicate with the corresponding telescopic hoses. At least one of the outer frames is provided with a three-way vent pipe, and the two output ends of the three-way vent pipe are respectively connected to the two corresponding connecting columns.

[0007] Furthermore, the two connecting columns on the outer frame are rotatable and move synchronously relative to each other.

[0008] Furthermore, the clamping structure includes a fixed base and several support frames installed at the bottom of the fixed base. Each support frame is provided with two clamping plates, and the two clamping plates are used to clamp wound tissue. One of the clamping plates on the support frame can rotate, and the other clamping plate can slide along the support frame. The two clamping plates are rotatably connected by two curved arms, and an elastic body is provided between the two curved arms. One of the crank arms is rotatably connected to the corresponding clamping plate, and the other crank arm is fixedly connected to the corresponding clamping plate.

[0009] Furthermore, the fixed base is hollow inside, and a piston is slidably arranged inside the fixed base. Several push-pull arms are arranged at the bottom of the piston. The push-pull arms are connected to a slidable clamp on the support frame. An air guide pipe is connected to the top of the fixed base. At least one of the outer frames is provided with an air supply pipe, which is connected to each of the air guide pipes.

[0010] Furthermore, a connecting plate is rotatably provided at the bottom of the storage frame, and the connecting plate is connected to the fixed base through a support arm.

[0011] Furthermore, the fixed base is rotatably mounted on the support arm.

[0012] The beneficial effects of this invention are as follows: By using two deformable rods to expand and open the wound, automatic traction of the wound can be achieved without manual traction. This effectively reduces the number of surgical personnel, alleviates the physical burden on medical staff, and improves traction stability, ensuring that the wound's position and size are stable, thus providing doctors with a better surgical environment. Attached Figure Description

[0013] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0014] Figure 1 This is a schematic diagram of the structure of the present invention; Figure 2 yes Figure 1 A structural diagram from another perspective; Figure 3 This is a schematic diagram of the deformable rod in an embodiment of the present invention; Figure 4 This is a schematic diagram of the connector structure in an embodiment of the present invention; Figure 5 This is a schematic cross-sectional view of the storage frame in an embodiment of the present invention; Figure 6 This is a schematic diagram of the structure of the fixing base in an embodiment of the present invention; Figure 7 This is a schematic diagram of the support frame in an embodiment of the present invention.

[0015] Figure label: 1. Deformation rod; 2. Storage frame; 3. Telescopic hose; 4. Clamping structure; 5. Connector; 6. Core board; 7. Outer frame; 8. Connecting column; 9. Three-way air pipe; 10. Frame; 11. Fixing base; 12. Support frame; 13. Clamping plate; 14. Crank arm; 15. Elastomer; 16. Piston; 17. Push-pull arm; 18. Air guide pipe; 19. Air delivery pipe; 20. Support arm; 21. Connecting plate. Detailed Implementation

[0016] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments.

[0017] In the description of this invention, it should be noted that the orientations or positional relationships indicated by terms such as "center", "up", "down", "left", "right", "vertical", "horizontal", "inner", and "outer" are based on the orientations or positional relationships shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0018] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections or electrical connections; they can refer to direct connections or indirect connections through an intermediate medium; and they can refer to the internal communication between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances. This embodiment is written in a progressive manner.

[0019] like Figures 1 to 7 As shown, a wound traction device for hepatobiliary surgery according to the present invention includes two deformable rods 1 and two connecting bodies 5 distributed opposite to each other. The two ends of each deformable rod 1 are connected to the two connecting bodies 5. The deformable rod 1 is linear in its contracted state and arc in its extended state. When the deformable rod 1 is arc-shaped, the two deformable rods 1 can be spliced ​​together to form a ring. The deformable rod 1 includes several storage frames 2, a telescopic hose 3 located between two adjacent storage frames 2, and a clamping structure 4 installed at the bottom of the storage frame 2. A core plate 6 is provided in the middle of the storage frame 2. The core plate 6 is connected to the telescopic hose 3. The inside of the storage frame 2 is used to store the telescopic hose 3 in a contracted state. When the telescopic hose 3 is inflated and extended, its shape is arc-shaped. The clamping structure 4 is used to clamp the wound tissue. In this invention, two deformable rods 1 are distributed front to back, and two connecting bodies 5 are distributed left to right. Both ends of each deformable rod 1 are connected to the two connecting bodies 5, thereby connecting the two deformable rods 1 to each other using the two connecting bodies 5. The deformable rods 1 can perform telescopic movements. When the deformable rod 1 is extended, its shape is arc-shaped, and the two deformable rods 1 form a ring. When the deformable rod 1 is contracted, it is straight, and the two deformable rods 1 are close to each other and parallel. By utilizing the deformation of the two deformable rods 1, when the deformable rod 1 is straight, its volume is small, making it convenient to insert the clamping structure 4 into the wound. When the deformable rod 1 is deformed into an arc shape, the clamping structures 4 on the two deformable rods 1 form a ring distribution. At this time, the clamping structures 4 open the wound, thereby realizing the automatic traction of the wound. Moreover, this method can form a stable field of vision, which is convenient for doctors to perform surgery. The storage frame 2 is mainly used to support the telescopic hose 3 and the clamping structure 4. When the deformable rod 1 retracts, adjacent storage frames 2 connect, and the telescopic hose 3 can be stored inside the storage frame 2. The telescopic hose 3 can telescopically move during inflation and deflation, and its shape is arc-shaped when inflated. To improve the strength of the telescopic hose 3, several steel rings can be set at equal intervals inside the telescopic hose 3, and several telescopic hoses 3 are allowed to be set between adjacent storage frames 2 to improve the stability of the deformable rod 1 structure. Since the deformable rod 1 is straight when the telescopic hose 3 retracts, adjacent storage frames 2 will connect with each other, and several storage frames 2 are closely arranged along the straight direction. To improve the connection effect between adjacent storage frames 2, special settings can be made at both ends of the storage frame 2, such as... Figure 5 As shown, the right end face of the storage box 2 is provided with an outer edge, and the left end face of the storage box 2 is provided with a flared area. When two adjacent storage boxes 2 are joined together, the outer edge of one storage box 2 can be inserted into the flared area of ​​the corresponding storage box 2. The core board 6 inside the storage frame 2 can be used to support the telescopic hose 3, and the two telescopic hoses 3 on the left and right sides of the core board 6 are connected to each other; When in use, the several telescopic hoses 3 on the deformable rod 1 are in a contracted state, and the deformable rod 1 is straight. At this time, the overall volume of the deformable rod 1 and the several clamping structures 4 on it is small. The several clamping structures 4 on the deformable rod 1 are placed into the wound. The several clamping structures 4 on the two deformable rods 1 clamp the epidermis on both sides of the wound respectively. Then, air is injected into the several telescopic hoses 3 on the two deformable rods 1, so that the two deformable rods 1 are extended and the two deformable rods 1 change from a straight shape to a ring shape. The clamping structures 4 move synchronously and pull the wound tissue, thereby realizing the traction and opening of the wound. It should be noted that, in order to avoid the clamping structure 4 pulling on the wound tissue and causing it to tear when the deforming rod 1 deforms, the clamping structure 4 can be made to roll and clamp the epidermis in the form of a roller, or the epidermis can be allowed to slide relative to the clamping structure 4. In some embodiments, the clamping method can be omitted and the wound can be pulled directly by spreading. All parts in contact with the tissue are made of medical grade silicone or titanium alloy. By employing a two-deformation rod-and-one-deformation-support method to open the wound, automatic traction of the wound can be achieved without manual traction. This effectively reduces the number of surgical personnel, alleviates the physical burden on medical staff, and improves traction stability, ensuring that the wound's position and size are stable, thus providing doctors with a better surgical environment.

[0020] During wound traction, in order to facilitate the placement of several clamping structures 4 into the wound, the arrangement of several clamping structures 4 when the deformable rod 1 is straight can be limited. That is, when the deformable rod 1 is straight, the two deformable rods 1 are parallel and fit together, and the positions of several clamping structures 4 on the two deformable rods 1 are staggered and collinear. A clamping structure 4 on one deformable rod 1 is located between two adjacent clamping structures 4 on another deformable rod 1, and several clamping structures 4 on the two deformable rods 1 are collinear. In this way, several clamping structures 4 can be arranged along the wound direction. In the wound width direction, the clamping structure 4 only occupies the space of its own width, thereby reducing the area occupied by several clamping structures 4 and facilitating operation.

[0021] Furthermore, the connector 5 includes an outer frame 7 and two connecting posts 8 installed on the outer frame 7. The connecting posts 8 are hollow and are connected to the corresponding telescopic hose 3. Among them, at least one outer frame 7 is provided with a three-way air pipe 9, and the two output ends of the three-way air pipe 9 are respectively connected to the two corresponding connecting posts 8; The outer frame 7 is used to provide support for the two connecting columns 8. Since the connecting column 8 is connected to the corresponding telescopic hose 3, and the two adjacent telescopic hoses 3 on the storage frame 2 are connected to each other, the connecting column 8 can be connected to several telescopic hoses 3 on the corresponding deformable rod 1. The three-way air pipe 9 can supply air to several telescopic hoses 3 in the two deformable rods 1 through the two connecting columns 8, thereby extending several telescopic hoses 3. Of course, the three-way air pipe 9 can also remove air from several telescopic hoses 3, thereby shortening the telescopic hoses 3. In actual operation, to facilitate the use of the traction device, a frame 10 can be set on one or two outer frames 7. The frame 10 is connected to the external operating table, fixation frame and other structures. In order to facilitate the adjustment of the position of the traction device, the frame 10 can be replaced by a curved arm structure that can be telescopic and bend.

[0022] Furthermore, the two connecting columns 8 on the outer frame 7 are rotatable, and the two connecting columns 8 move synchronously relative to each other; When the two deformable rods 1 are extended and form a ring, the angle between the two deformable rods 1 can be adjusted by rotating the two connecting columns 8 on the outer frame 7. This allows for adjustment of the shape of the ring formed by the two deformable rods 1 and the internal field of vision, making it easier for doctors to perform surgery.

[0023] Furthermore, the clamping structure 4 includes a fixed base 11 and several support frames 12 installed at the bottom of the fixed base 11. Each support frame 12 is provided with two clamping plates 13, and the two clamping plates 13 are used to clamp wound tissue. One clamping plate 13 on the support frame 12 can rotate, and the other clamping plate 13 can slide along the support frame 12. The two clamping plates 13 are rotatably connected by two curved arms 14, and an elastic body 15 is provided between the two curved arms 14. One of the crank arms 14 is rotatably connected to the corresponding clamping plate 13, and the other crank arm 14 is fixedly connected to the corresponding clamping plate 13; The fixed base 11 is used to support several support frames 12. When the two clamps 13 on the support frame 12 are close to each other, they can clamp the wound tissue. Since one clamp 13 rotates on the support frame 12 and the other clamp 13 slides on the support frame 12, when the sliding clamp 13 moves toward the rotating clamp 13, the two curved arms 14 between the two clamps 13 will bend outward. At this time, the rotating clamp 13 flips from the vertical state to the horizontal state, the two clamps 13 are parallel to each other and the two clamps 13 are connected. This setting can make the initial position of the rotating clamp 13 vertical, so as to facilitate the clamp 13 to pass through the wound and avoid the need to open the wound and put the clamp 13 into the wound. This simplifies the operation and can achieve both easy insertion and clamping. In practical use, if such as Figure 7 With the structure shown, the lower rotating clamp 13 cannot rotate to a vertical position. However, if the rotation axis of the clamp 13 is adjusted, it can be made to form a vertical position. The elastic body 15 between the two curved arms 14 can be used to provide a restoring elastic force for the two clamps 13.

[0024] Furthermore, the fixed base 11 is hollow inside, and a piston 16 is slidably arranged inside the fixed base 11. Several push-pull arms 17 are arranged at the bottom of the piston 16. The push-pull arms 17 are connected to the sliding clamp 13 on the support frame 12. An air guide pipe 18 is connected to the top of the fixed base 11. At least one outer frame 7 is provided with an air supply pipe 19, which is connected to each air guide pipe 18. The air supply pipe 19 can supply air to the upper side inside each fixed seat 11 through each air guide pipe 18. The air pressure can drive the piston 16 to move. The piston 16 can push the sliding clamp 13 on each support frame 12 to move through multiple push-pull arms 17, thereby providing power to each clamp 13. Since gas is supplied to the upper side of piston 16, and the space under piston 16 changes when piston 16 moves, several air ports can be opened at the bottom of piston 16 to balance the air pressure.

[0025] Furthermore, a connecting plate 21 is rotatably provided at the bottom of the storage box 2, and the connecting plate 21 is connected to the fixed base 11 through a support arm 20; Using the support arm 20 and the connecting plate 21, the fixing seat 11 can be connected to the storage frame 2. Since the connecting plate 21 can rotate at the bottom of the storage frame 2, the traction direction of the clamping structure 4 can automatically adapt to the deformation of the wound tissue when the wound is pulled, thus avoiding the situation where the deformation on one side of the traction position is small while the deformation on the other side is large when the traction is applied rigidly, which would lead to epidermal tearing.

[0026] Furthermore, the fixed base 11 is rotatably mounted on the support arm 20; Since several support frames 12 are installed at the bottom of the fixed base 11, when the support frames 12 clamp the epidermis, as the storage frame 2 moves, the two clamping plates 13 on the support frames 12 can pull the epidermis, and the reaction force of the epidermis can be used to make the fixed base 11 rotate on the support arm 20, thereby turning the epidermis clamped by the two clamping plates 13 on the support frames 12 over, thereby turning the wound tissue outward to provide a larger field of vision; avoiding the compression of epidermal folds and the resulting small traction in some areas of the wound when directly stretched outward.

[0027] The above are merely preferred embodiments of the present invention. It should be noted that those skilled in the art can make various improvements and modifications without departing from the technical principles of the present invention, and these improvements and modifications should also be considered within the scope of protection of the present invention.

Claims

1. A wound traction device for hepatobiliary surgery, characterized in that, It includes two oppositely distributed deformable rods and two oppositely distributed connecting bodies. The two ends of each deformable rod are connected to the two connecting bodies. The deformable rods are linear in their contracted state and arc in their extended state. When the deformable rod is arc-shaped, the two deformable rods can be spliced ​​together to form a ring. The deformable rod includes several storage frames, a telescopic hose located between two adjacent storage frames, and a clamping structure installed at the bottom of the storage frame. A core plate is provided in the middle of the storage frame, and the core plate is connected to the telescopic hose. The inside of the storage frame is used to store the telescopic hose in a contracted state. When the telescopic hose is inflated and extended, its shape is arc-shaped. The clamping structure is used to clamp wound tissue.

2. The surgical wound traction device for hepatobiliary surgery according to claim 1, characterized in that, When the deformable rod is straight, the two deformable rods are parallel and fit together, and the positions of several clamping structures on the two deformable rods are staggered and collinear.

3. The surgical wound traction device for hepatobiliary surgery according to claim 2, characterized in that, The connector includes an outer frame and two connecting columns mounted on the outer frame. The connecting columns are hollow and communicate with the corresponding telescopic hoses. At least one of the outer frames is provided with a three-way vent pipe, and the two output ends of the three-way vent pipe are respectively connected to the two corresponding connecting columns.

4. The surgical wound traction device for hepatobiliary surgery according to claim 3, characterized in that, The two connecting columns on the outer frame are rotatable and move synchronously relative to each other.

5. A wound traction device for hepatobiliary surgery according to claim 4, characterized in that, The clamping structure includes a fixed base and several support frames installed at the bottom of the fixed base. Each support frame is provided with two clamping plates, and the two clamping plates are used to clamp wound tissue. One of the clamping plates on the support frame can rotate, and the other clamping plate can slide along the support frame. The two clamping plates are rotatably connected by two curved arms, and an elastic body is provided between the two curved arms. One of the crank arms is rotatably connected to the corresponding clamping plate, and the other crank arm is fixedly connected to the corresponding clamping plate.

6. A wound traction device for hepatobiliary surgery according to claim 5, characterized in that, The fixed base is hollow inside, and a piston is slidably arranged inside the fixed base. Several push-pull arms are arranged at the bottom of the piston. The push-pull arms are connected to the sliding clamps on the support frame. An air guide pipe is connected to the top of the fixed base. At least one of the outer frames is provided with an air supply pipe, which is connected to each of the air guide pipes.

7. A wound traction device for hepatobiliary surgery according to claim 6, characterized in that, The storage frame is rotatably equipped with a connecting plate at its bottom, and the connecting plate is connected to the fixed base via a support arm.

8. A wound traction device for hepatobiliary surgery according to claim 7, characterized in that, The fixed base is rotatably mounted on the support arm.

Images