Device for temporarily blocking liver blood flow in laparoscopic surgery

Abstract

The invention belongs to the technical field of medical instruments, and particularly relates to a temporary liver blood flow blocking device in laparoscopic surgery, which comprises a bottom box, symmetrically distributed protection plates are fixedly mounted at the bottom of the bottom box, and a vertical rod is fixedly inserted in the middle of the top of the bottom box. According to the temporary liver blood flow blocking device in the laparoscopic surgery, a to-be-clamped blood vessel can be preliminarily limited and protected through the limiting plates which are designed in a concave arc shape, and the blood vessel is prevented from being separated from the position between the two limiting plates in the clamping process; the blood vessel clamped between the clamping blocks is in a gradually relaxed state from the middle to the two sides due to the arc-shaped design of the side faces of the clamping blocks, so that the deformation and torsion resistance of the blood vessel can be reduced to the maximum extent, and the blood flow blocking effect of the clamped blood vessel can be guaranteed due to the plane design of the clamping blocks; by means of the design, damage to the high blood vessels after multiple blocking operations can be further reduced, and the protection effect on liver blood vessels in the laparoscopic surgery is improved.

Description

Technical Field

[0001] The invention relates to the technical field of medical devices, in particular to a device for temporarily blocking liver blood flow during laparoscopic surgery. Background Art

[0002] For a long time, the control of hepatic wound bleeding during laparoscopic liver resection has been a difficult problem that has troubled surgeons. The liver has a rich blood supply and a complex anatomical structure. During laparoscopic liver resection, it is easy to cause massive bleeding in the hepatic artery, portal vein or hepatic vein, endangering the patient's life safety. At present, there are four main ways of liver blood flow blocking: total hepatic blood flow blocking, regional hepatic blood flow blocking, hepatic blood flow blocking, and total hepatic blood flow blocking. The hemostasis methods and instruments in existing surgical instruments cannot achieve the purpose of blocking the blood flow in and out of the liver without damaging the hepatic artery, portal vein and hepatic vein, and are not suitable for hepatic hemostasis during laparoscopic surgery. Therefore, how to provide a device suitable for hepatic wound hemostasis during laparoscopic or robot-assisted liver resection has become an urgent problem to be solved.

[0003] The patent with the authorization announcement number CN215606017U discloses a blocking band device for temporarily blocking the blood flow of the liver during laparoscopic liver surgery, including a blocking band body made of a flexible material, the blocking band body including a smooth band body, a non-slip buckle at one end of the smooth band body, and a clamping portion at the other end of the smooth band body, a side hole is provided on the side of the smooth band body close to the clamping portion, and a toothed buckle is provided on the outer surface of the side of the smooth band body close to the side hole. The present invention can prevent the blocking band from slipping after being put on by passing the non-slip buckle through the side hole, and the toothed buckle and side hole with good elasticity can not only block the blood supply of the liver but also block the blood flow repeatedly, thereby reducing intraoperative bleeding. In the above patent, the size of the blocking band is small, and although the material is flexible, when compressing the blood vessel, due to the small contact area with the blood vessel, it is easy to cause damage to the squeezed part of the blood vessel, especially at the edge of the contact surface. The distortion amplitude of the blood vessel is large when it is compressed, and repeated blocking of the blood flow is easy to cause blood vessel damage. Summary of the invention

[0004] In view of the deficiencies of the prior art, the present invention provides a device for temporarily blocking liver blood flow during laparoscopic surgery, which solves the existing problems.

[0005] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a device for temporarily blocking liver blood flow during laparoscopic surgery, comprising a base box, the bottom of the base box is fixedly installed with symmetrically distributed protective plates, a vertical rod is fixedly inserted in the middle position of the top of the base box, and limiting plates are slidably installed on the bottom of the base box and on the opposite sides of the two protective plates, and clamping blocks are fixedly installed on the opposite sides of the two limiting plates, and a first protective gasket is fitly installed on the opposite sides of the two clamping blocks, and the opposite sides of the two limiting plates are designed as concave arcs, and the two clamping blocks are respectively fitly installed on the arc-shaped sides of the limiting plates, and the outer sides of the two clamping blocks are designed as arcs and the opposite sides are designed as planes parallel to each other, and the first protective gasket is made of silicone.

[0006] As a preferred technical solution of the present invention, a sliding groove which penetrates the interior of the bottom box is opened at the bottom of the bottom box, and symmetrically distributed sliding rods are slidably installed at the bottom of the inner side of the bottom box, and sliding blocks which are fixedly installed at the tops of the two clamping blocks are respectively fixed at the bottoms of the two sliding rods, and the sliding blocks are slidably installed on the inner side of the sliding groove.

[0007] As a preferred technical solution of the present invention, an adjusting button is rotatably installed on the top of the vertical rod, a connecting rod is slidably installed on the inner side of the vertical rod, the bottom end of the connecting rod passes through the top surface of the bottom box to the inside of the bottom box and is fixedly installed with a traction column, a receiving ring is fixedly installed on the outer side of the traction column, and a symmetrically distributed linkage rod is fixedly installed on the side of the receiving ring, a symmetrically distributed rotating rod is rotatably installed on the end of the linkage rod away from the receiving ring, and the end of the rotating rod away from the linkage rod is rotatably installed on the side of the sliding rod.

[0008] As a preferred technical solution of the present invention, there are multiple rotating rods and they are symmetrically installed on the opposite sides of the two sliding rods. The top and bottom of the traction column are respectively fixedly installed with second protective gaskets, and the second protective gaskets are made of silicone.

[0009] As a preferred technical solution of the present invention, an external thread groove is provided on the outer side of the vertical rod, a positioning ring is threadedly sleeved on the outer side of the external thread groove, and limiting plates are slidably sleeved on the outer side of the external thread groove and on the upper and lower sides of the positioning ring, and an installation groove is provided on the top of the limiting plate.

[0010] As a preferred technical solution of the present invention, one end of a threaded rod is fixedly mounted on the bottom of the adjusting button, and the other end of the threaded rod is threadedly inserted into the inner side of the vertical rod and rotatably connected to the top end of the connecting rod.

[0011] As a preferred technical solution of the present invention, the outer corners of the protective plate, the bottom box and the limiting plate are all designed to be arc-shaped and smooth.

[0012] Compared with the prior art, the present invention provides a device for temporarily blocking liver blood flow during laparoscopic surgery, which has the following beneficial effects:

[0013] 1. A device for temporarily blocking liver blood flow during laparoscopic surgery can initially limit and protect the blood vessels to be clamped through the limiting plates with an inwardly concave arc design, so as to prevent the blood vessels from escaping from between the two limiting plates during the clamping process. The arc-shaped design of the side surfaces of the clamping blocks makes the blood vessels clamped between the clamping blocks gradually relax from the middle to both sides, thereby minimizing the deformation and distortion of the blood vessels. The plane design of the clamping blocks can ensure the blood flow blocking effect of the clamped blood vessels. Such a design can further reduce the damage to the high blood vessels after multiple blocking operations, thereby improving the protective effect of the liver blood vessels during laparoscopic surgery.

[0014] 2. This device for temporarily blocking liver blood flow during laparoscopic surgery drives the threaded rod to rotate and rise and fall in the vertical rod by turning the adjusting knob, which can drive the connecting rod to rise and fall in the vertical rod, so that the connecting rod moves up and down in the vertical rod, which will drive the traction column to move up and down, so that under the coordinated action of the receiving ring and the linkage rod, the rotating rod will be driven to rotate, thereby driving the sliding rod to rotate, and the relative movement of the two sliding rods will drive the two clamping blocks to approach each other through the sliding blocks, thereby clamping and blocking the blood vessels, thereby improving the convenience and smoothness of the liver blood flow blocking operation during laparoscopic surgery.

[0015] 3. This device for temporarily blocking liver blood flow during laparoscopic surgery can limit the vertical rod to be installed on an external fixing device through the installation grooves on the two limit plates, which makes it convenient for medical staff to perform blood flow blocking operations and improves the stability of the device. The bottom box under the vertical rod can be fixed at different heights by rotating the positioning ring to different positions, so that the position of the bottom box can be fine-tuned to improve the accuracy of the blood flow blocking operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the structure of the present invention;

[0017] Figure 2 This is a schematic diagram of the internal structure of the bottom box of the present invention;

[0018] Figure 3 It is a cross-sectional schematic diagram of the internal structure of the vertical rod of the present invention;

[0019] Figure 4 For the present invention Figure 1 A schematic diagram of the structure enlargement in the middle;

[0020] Figure 5 For the present invention Figure 2 A magnified schematic diagram of the structure at B in the middle;

[0021] Figure 6It is a schematic diagram of the structure near the limiting plate of the present invention.

[0022] In the figure: 1. bottom box; 11. protective plate; 12. sliding groove; 2. vertical rod; 21. external thread groove; 22. positioning ring; 3. limit plate; 31. installation groove; 4. adjustment button; 41. threaded rod; 42. connecting rod; 5. limit plate; 51. clamping block; 52. first protective gasket; 6. sliding rod; 61. sliding block; 7. traction column; 71. receiving ring; 72. linkage rod; 73. rotating rod; 74. second protective gasket. DETAILED DESCRIPTION

[0023] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0024] Embodiment 1

[0025] See also Figure 1-6 In this embodiment: a device for temporarily blocking liver blood flow during laparoscopic surgery comprises a bottom box 1, a symmetrically distributed protective plate 11 is fixedly installed on the bottom of the bottom box 1, a vertical rod 2 is fixedly inserted in the middle position of the top of the bottom box 1, and a limit plate 5 is slidably installed on the bottom of the bottom box 1 and on the opposite side of the two protective plates 11, and a clamping block 51 is fixedly installed on the opposite side of the two limit plates 5, and a first protective gasket 52 is fitted on the opposite side of the two clamping blocks 51, and the opposite side of the two limit plates 5 is an inward concave arc design, and the two clamping blocks 51 are respectively fitted on the arc side of the limit plate 5, and the outer side surfaces of the two clamping blocks 51 are arc-shaped and the opposite side is a mutually parallel plane design, and the first protective gasket 52 is made of silicone;

[0026] During laparoscopic surgery, the bottom box 1 is sent to the position of the patient's liver blood vessels through the vertical rod 2, and the position of the bottom box 1 is adjusted so that the blood vessel is stuck between the two limit plates 5. Then, the relative movement of the two limit plates 5 drives the clamping block 51 to move and clamp the blood vessel, thereby temporarily blocking the blood flow to the liver. During the clamping process, the first protective gasket 52 will directly contact the blood vessel, and the silicone material can effectively protect the deformed blood vessel and reduce its compression damage. At the same time, the limit plate 5 with an inwardly concave arc design can perform preliminary limiting and protection on the blood vessel to be clamped to prevent the blood vessel from escaping from between the two limit plates 5 during the clamping process. The arc-shaped design of the side of the clamping block 51 makes the blood vessel clamped between the clamping blocks 51 gradually relax from the middle to the two sides, which can minimize the deformation and distortion of the blood vessel. The plane design of the clamping block 51 can ensure the blood flow blocking effect of the clamped blood vessel. Such a design can further reduce the damage to the high blood vessel after multiple blocking operations, thereby improving the protective effect of the liver blood vessels during laparoscopic surgery.

[0027] As a preferred embodiment, a sliding groove 12 which penetrates the interior of the bottom box 1 is provided at the bottom of the bottom box 1, and symmetrically distributed sliding rods 6 are slidably installed at the bottom of the inner side of the bottom box 1. The bottoms of the two sliding rods 6 are respectively fixed with sliding blocks 61 which are fixedly installed at the tops of the two clamping blocks 51. The sliding blocks 61 are slidably installed on the inner sides of the sliding groove 12. The relative movement of the two sliding rods 6 will drive the two clamping blocks 51 to approach each other through the sliding blocks 61, thereby clamping and blocking the blood vessels.

[0028] As a preferred embodiment, an adjusting button 4 is rotatably installed on the top of the vertical rod 2, and a connecting rod 42 is slidably installed on the inner side of the vertical rod 2. The bottom end of the connecting rod 42 passes through the top surface of the bottom box 1 to the inside of the bottom box 1 and is fixedly installed with a traction column 7. A receiving ring 71 is fixedly installed on the outer side of the traction column 7, and a symmetrically distributed linkage rod 72 is fixedly installed on the side of the receiving ring 71. A symmetrically distributed rotating rod 73 is rotatably installed on the end of the linkage rod 72 away from the receiving ring 71, and an end of the rotating rod 73 away from the linkage rod 72 is rotatably installed on the side of the sliding rod 6. The connecting rod 42 moves up and down in the vertical rod 2, which will drive the traction column 7 to move up and down. In this way, under the coordinated action of the receiving ring 71 and the linkage rod 72, the rotating rod 73 will be driven to rotate, thereby driving the sliding rod 6 to rotate.

[0029] There are multiple rotating rods 73 and they are symmetrically installed on the opposite sides of the two sliding rods 6. The top and bottom of the traction column 7 are respectively fixedly installed with second protective gaskets 74, and the second protective gaskets 74 are made of silicone. The symmetrically installed rotating rods 73 further improve the stability of the sliding process of the sliding rod 6, so that the blood flow blocking operation is carried out smoothly. When the traction column 7 moves up and down, the second protective gasket 74 can flexibly protect the top and bottom of the traction column 7.

[0030] Embodiment 2

[0031] See also Figure 1-6 In this embodiment: an external thread groove 21 is provided on the outer side of the vertical rod 2, and a positioning ring 22 is threadedly sleeved on the outer side of the external thread groove 21. Limiting plates 3 are slidably sleeved on the outer side of the external thread groove 21 and on the upper and lower sides of the positioning ring 22 respectively. A mounting groove 31 is provided on the top of the limiting plate 3. The vertical rod 2 can be restricted to be installed on an external fixing device through the mounting grooves 31 on the two limiting plates 3. This can facilitate medical staff to perform blood flow blocking operations and improve the stability of the device. By rotating the positioning ring 22 to different positions, the bottom box 1 under the vertical rod 2 can be fixed at different heights. In this way, the position of the bottom box 1 can be fine-tuned to improve the accuracy of the blood flow blocking operation.

[0032] As a preferred embodiment, one end of a threaded rod 41 is fixedly installed at the bottom of the adjusting button 4, and the other end of the threaded rod 41 is threadedly inserted into the inner side of the vertical rod 2 and is rotatably connected to the top of the connecting rod 42. By rotating the adjusting button 4, the threaded rod 41 is driven to rotate and rise and fall in the vertical rod 2, and the connecting rod 42 can be driven to rise and fall in the vertical rod 2, thereby improving the convenience and smoothness of the operation of blocking the blood flow of the liver blood vessels during laparoscopic surgery.

[0033] As a preferred embodiment, the outer corners of the protective plate 11, the bottom box 1 and the limit plate 5 are all designed to be arc-shaped and smooth. The smooth design can reduce damage to the patient's body when the device enters and exits the patient's body during use, and at the same time improve the smoothness of the device position adjustment process.

[0034] Finally, it should be noted that the above are only preferred embodiments of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A device for temporarily blocking liver blood flow during laparoscopic surgery, comprising a bottom box (1), characterized in that: The bottom of the bottom box (1) is fixedly installed with symmetrically distributed protective plates (11), and a vertical rod (2) is fixedly inserted in the middle position of the top of the bottom box (1). The bottom of the bottom box (1) and the side opposite to the two protective plates (11) are respectively slidably installed with limit plates (5), and the side opposite to the two limit plates (5) is fixedly installed with clamping blocks (51), and the side opposite to the two clamping blocks (51) is fitted with a first protective gasket (52). The side opposite to the two limit plates (5) is designed as an inward concave arc, and the two clamping blocks (51) are respectively fitted on the arc side of the limit plate (5). The outer side surfaces of the two clamping blocks (51) are designed as an arc and the opposite side is designed as a plane parallel to each other. The first protective gasket (52) is made of silicone.

2. A device for temporarily blocking liver blood flow during laparoscopic surgery according to claim 1, characterized in that: The bottom of the bottom box (1) is provided with a sliding groove (12) which is connected to the inside of the bottom box (1); the bottom of the inner side of the bottom box (1) is slidably mounted with symmetrically distributed sliding rods (6); the bottoms of the two sliding rods (6) are respectively fixedly mounted with sliding blocks (61) which are fixedly mounted to the tops of the two clamping blocks (51); and the sliding blocks (61) are slidably mounted on the inner side of the sliding groove (12).

3. The device for temporarily blocking liver blood flow during laparoscopic surgery according to claim 2, characterized in that: An adjusting button (4) is rotatably mounted on the top of the vertical rod (2); a connecting rod (42) is slidably mounted on the inner side of the vertical rod (2); the bottom end of the connecting rod (42) passes through the top surface of the bottom box (1) to the inside of the bottom box (1) and is fixedly mounted with a traction column (7); a receiving ring (71) is fixedly mounted on the outer side of the traction column (7); a symmetrically distributed linkage rod (72) is fixedly mounted on the side of the receiving ring (71); a symmetrically distributed rotating rod (73) is rotatably mounted on one end of the linkage rod (72) away from the receiving ring (71); and an end of the rotating rod (73) away from the linkage rod (72) is rotatably mounted on the side of the sliding rod (6).

4. The device for temporarily blocking liver blood flow during laparoscopic surgery according to claim 3, characterized in that: There are a plurality of rotating rods (73) which are symmetrically mounted on opposite sides of the two sliding rods (6). The top and bottom of the traction column (7) are respectively fixedly mounted with second protective gaskets (74), and the second protective gaskets (74) are made of silicone.

5. The device for temporarily blocking liver blood flow during laparoscopic surgery according to claim 3, characterized in that: An external thread groove (21) is provided on the outer side of the vertical rod (2), a positioning ring (22) is threadedly sleeved on the outer side of the external thread groove (21), and a limiting plate (3) is slidably sleeved on the outer side of the external thread groove (21) and on the upper and lower sides of the positioning ring (22), respectively, and a mounting groove (31) is provided on the top of the limiting plate (3).

6. The device for temporarily blocking liver blood flow during laparoscopic surgery according to claim 3, characterized in that: One end of a threaded rod (41) is fixedly mounted on the bottom of the adjusting button (4), and the other end of the threaded rod (41) is threadedly inserted into the inner side of the vertical rod (2) and is rotatably connected to the top end of the connecting rod (42).

7. The device for temporarily blocking liver blood flow during laparoscopic surgery according to claim 1, characterized in that: The outer corners of the protective plate (11), the bottom box (1) and the limiting plate (5) are all designed to be arc-shaped and smooth.

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