A tissue protection shield device for endoscopic surgery

Abstract

This invention relates to the field of medical device technology, specifically to a tissue protection shielding device for laparoscopic surgery. The device includes a shielding assembly and a pull cord. The shielding assembly comprises several shielding plates; each shielding plate has a perforation, and an elastic element connects adjacent shielding plates. The elastic element provides elastic force to allow the shielding assembly to roll into a cylindrical shape when no external force is applied, at which point the shielding assembly is in its initial state. The pull cord has a limiting element. When the shielding assembly is in its initial state, pulling the pull cord reduces the length of the cord that is threaded through the shielding assembly, causing adjacent shielding plates to rotate relative to each other. This allows the shielding assembly to bend in the opposite direction into an arc shape, and the elastic element is compressed by the corresponding two shielding plates, resulting in a protruding structure protruding from the inner surface of the shielding assembly. This tissue protection shielding device for laparoscopic surgery can improve the protection of the liver, preventing injury or cuts to the liver.

Description

Technical Field

[0001] This invention relates to the field of medical device technology, specifically to a tissue protection shielding device for laparoscopic surgery. Background Technology

[0002] Clinically, during laparoscopic surgery, the left lobe of the liver sometimes obstructs the surgeon's field of vision. To address this issue, surgeons have developed various liver suspension techniques designed to safely lift and fix the liver, thereby obtaining a clear and stable operating space.

[0003] Currently, sutures are commonly used to temporarily adjust the position of the left lobe of the liver to reduce its impact on the surgical field. Among these methods, suture suspension, V-shaped suspension, and W-shaped suspension are the most common ways to temporarily adjust the position of the left lobe of the liver.

[0004] Although the above methods can adjust the position of the left lobe of the liver, they usually only have a traction effect and do not shield the left lobe of the liver. This means that the surgeon must pay close attention during the operation to prevent the surgical instruments from damaging the left lobe of the liver. At the same time, when the sutures are used to pull the left lobe of the liver, they can easily strangle or cut the liver. Thus, the protection of the liver is not very effective.

[0005] Therefore, how to improve the protection of the liver during laparoscopic surgery is a technical problem that urgently needs to be solved. Summary of the Invention

[0006] The purpose of this invention is to address the shortcomings of current laparoscopic surgery, where the protection of the liver is inadequate when the position of the left lobe of the liver is temporarily adjusted to reduce its impact on the surgical field. This invention provides a tissue protection shielding device for laparoscopic surgery to improve the protection of the liver.

[0007] To achieve the above-mentioned objectives, the present invention provides the following technical solution:

[0008] A tissue protection shielding device for laparoscopic surgery includes a shielding assembly and a pull rope. The shielding assembly includes a plurality of shielding plates, which are arranged along their own length, and adjacent shielding plates are connected and can rotate relative to each other.

[0009] The shielding plate has perforations. One end of the pull rope is fixed to the first shielding plate. The pull rope passes through the perforations on several shielding plates in sequence and comes out from the perforation on the last shielding plate. An elastic element is connected between two adjacent shielding plates. The elastic element is used to provide elastic force so that the shielding assembly can be rolled into a cylindrical shape when no external force is applied. At this time, the shielding assembly is in the initial state. The shielding assembly in the initial state can pass through the abdominal cavity passage.

[0010] The pull cord is equipped with a limiting member to restrict the length of the pull cord that is threaded through the shielding assembly. The position of the limiting member on the pull cord is adjustable. When the shielding assembly is in its initial state, pulling the pull cord reduces the length of the pull cord that is threaded through the shielding assembly, causing two adjacent shielding plates to rotate relative to each other. This causes the shielding assembly to bend in the opposite direction into an arc shape, and the elastic element is squeezed by the corresponding two shielding plates. The squeezed elastic element forms a protruding structure protruding from the inner surface of the shielding assembly. The inner surface of the shielding assembly is used to contact the left lobe of the liver.

[0011] As a preferred technical solution of this application, when the shielding component is in the initial state, the cross-sectional shape of the elastic element is arc-shaped, and the arc-shaped concave surface of the elastic element faces the rotation axis between the two corresponding shielding plates.

[0012] As the preferred technical solution of this application, the elastic element is made of rubber or silicone.

[0013] As the preferred technical solution of this application, when the blocking component is bent into an arc shape in the reverse direction and is at its maximum reverse bending degree, the blocking component is in a blocking state. At this time, in the direction from the blocking piece at the head to the blocking piece at the tail, the height h of the protrusion structure of the elastic member protruding from the inner side of the blocking component gradually decreases.

[0014] As the preferred technical solution of this application, a flexible connection is adopted between two adjacent shielding sheets.

[0015] As the preferred technical solution of this application, the limiting member includes a base, a spring and a movable member. The movable member is slidably disposed on the base. One end of the spring is connected to the base and the other end is connected to the movable member. A clamping area is formed between the movable member and the base. The clamping area is used for the pull rope to pass through.

[0016] When no external force is applied to the limiting member, the spring provides elastic force to compress and clamp the pull rope between the moving member and the base, so that the pull rope is fixed relative to the limiting member;

[0017] By pressing the movable part, the movable part can be moved relative to the base, thereby releasing the limiting part from fixing the pull rope;

[0018] The limiting member can abut against the tail shield.

[0019] As a preferred technical solution of this application, the tissue protection shielding device for laparoscopic surgery further includes a suspension rope, one end of which is used to connect to the shielding component, and the other end is used to fix it to the patient's abdominal wall to fix the shielding component in the patient's abdominal cavity.

[0020] As the preferred technical solution of this application, the suspension rope includes at least three ropes, with at least two ropes connected to the head of the shielding component and at least one rope connected to the tail of the shielding component.

[0021] As the preferred technical solution of this application, the shielding component can be rolled into a straight cylindrical structure with a diameter of 12-16mm.

[0022] As a preferred technical solution of this application, when the blocking component is in a blocking state, the blocking component is in a semi-circular arc shape.

[0023] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0024] 1. In the scheme of this application, an elastic element is provided between two adjacent shielding panels. The elastic element provides elastic force so that the shielding assembly is rolled into a cylindrical shape when no external force is applied. At this time, the shielding assembly is in its initial state, with a small volume and cross-sectional area, allowing it to pass through the patient's abdominal passage. This facilitates the shielding assembly extending from the outside to the abdominal cavity along the abdominal passage. After the shielding assembly is extended into the abdominal cavity, the length of the pull rope used for threading through the shielding assembly is reduced by pulling the pull rope, causing the two adjacent shielding panels to... The device rotates and bends the shielding component in the opposite direction into an arc shape. Simultaneously, the elastic sheet is compressed by the corresponding two shielding sheets, forming a protruding structure on the inner side of the shielding component. Under the action of the limiting component, the length of the pull rope used to thread through the shielding component is limited, thereby improving the stability of the shielding component when bent into an arc shape. The patient's left lobe of the liver can be shielded by the arc-shaped shielding component. Furthermore, when used in conjunction with the suspension device, the shielding component can support and shield the left lobe of the liver, thereby improving the protective effect on the left lobe of the liver and preventing... To prevent injury or cuts to the liver, the elastic element serves two purposes. First, when the shielding component is bent into an arc shape, the elastic element forms a raised structure. This raised structure increases the roughness of the side of the shielding component that contacts the left lobe of the liver, further improving the anti-slip effect and thus enhancing the stability of the left lobe of the liver when supported. Second, when the shielding component needs to be removed from the patient, by increasing the length of the pull cord for threading through the shielding component, the elastic element can recover its deformation under its own elastic force, causing the two adjacent shielding pieces to rotate relative to each other. This allows the shielding component to gradually tend towards a cylindrical, rolled-up shape, making it easier for medical staff to use surgical forceps to clamp the shielding component out of the abdominal cavity along the abdominal passage and remove it from the body. This improves the convenience of removing the shielding component from the patient. Furthermore, under the action of the elastic element, as the shielding component gradually tends towards a cylindrical, rolled-up shape, medical staff can control the surgical forceps to further roll the shielding component tightly, further reducing the cross-sectional area of ​​the rolled-up component.

[0025] Meanwhile, in this application, the shielding component can form a larger protective area after being bent into an arc shape, which can improve the protective effect of the shielding component on the left lobe of the liver. At the same time, the shielding component occupies a small volume when rolled into a cylindrical shape, which is convenient for insertion or removal, so that the size of the surgical incision in the patient's abdomen can be greatly reduced during the entire operation.

[0026] 2. When the shielding assembly is in the shielding state, the height h of the protruding structure of the elastic element protruding from the inner side of the shielding assembly gradually decreases in the direction from the head shielding plate to the tail shielding plate. This results in a higher height for the protruding structure near the head shielding plate. Since the head shielding plate is used to support the left lobe of the liver, its higher height allows for greater roughness in that area of ​​the shielding assembly, providing greater friction and making the contact between the left lobe of the liver and the part of the shielding assembly near the head shielding plate more stable. Simultaneously, the height h of the protruding structure near the tail shielding plate... With its lower height and gentler, more gradual protrusion, the roughness of this area on the shielding component is relatively smaller. When shielding and protecting the left lobe of the liver, it is more conducive to the relative movement between the left lobe of the liver and the shielding plate near the tail of the shielding component, and to the restraint of the left lobe of the liver within the arc-shaped shielding component. In this way, while providing stable support for the bottom of the left lobe of the liver, it is also conducive to restraining and accommodating the non-bottom area of ​​the left lobe of the liver, so as to restrain the non-bottom area of ​​the left lobe of the liver within the arc-shaped shielding component. Here, the bottom of the left lobe of the liver refers to the part that is supported upward by the shielding component.

[0027] 3. When the movable part is pressed, it can move relative to the base, thereby releasing the limiting part from fixing the pull rope. This facilitates the movement of the limiting part relative to the pull rope, allowing adjustment of the limiting part's position on the pull rope. After the external force is removed, the elasticity provides elastic force to compress and clamp the pull rope between the movable part and the base, thus fixing the pull rope relative to the limiting part. This facilitates fixing the limiting part after adjustment. With the limiting part able to abut against the tail cover plate, it is also more conducive to limiting and adjusting the length of the pull rope for threading through the cover assembly. Attached Figure Description

[0028] Figure 1 This is a schematic diagram of the structure of the shielding component protecting the left lobe of the liver in one embodiment of the tissue protection shielding device for laparoscopic surgery according to this application;

[0029] Figure 2 This is a schematic diagram of one embodiment of a tissue protection shielding device for laparoscopic surgery according to this application;

[0030] Figure 3 This application relates to a tissue protection shielding device for laparoscopic surgery. Figure 2A magnified structural diagram of part A in the middle;

[0031] Figure 4 This application relates to a tissue protection shielding device for laparoscopic surgery. Figure 2 A magnified structural diagram of part B in the middle section;

[0032] Figure 5 This is a schematic diagram of the structure of the shielding component in the initial state of a tissue protection shielding device for laparoscopic surgery according to one embodiment of the present application, when the suspension rope is not shown in the middle;

[0033] Figure 6 This is a cross-sectional view of the limiting member in one embodiment of a tissue protection shielding device for laparoscopic surgery according to this application.

[0034] The diagram shows: 1-Shielding component, 2-Pull rope, 3-Shielding plate, 4-Perforation, 5-Elastic component, 6-Limiting component, 7-Base, 8-Spring, 9-Moving component, 10-Clamping area, 11-Suspension rope. Detailed Implementation

[0035] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments.

[0036] Therefore, the following detailed description of embodiments of the present invention is not intended to limit the scope of the claimed invention, but merely illustrates some embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0037] It should be noted that, unless otherwise specified, the embodiments and features and technical solutions in the embodiments of the present invention can be combined with each other.

[0038] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0039] In the description of this invention, it should be noted that the terms "upper," "lower," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product of this invention is in use, or the orientation or positional relationship commonly understood by those skilled in the art. These terms 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, and therefore should not be construed as a limitation of this invention. In addition, the terms "first," "second," etc., are only used to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0040] Example 1: This example provides a tissue protection shielding device for laparoscopic surgery. See [link to example]. Figures 1-5 As shown, it includes a shielding component 1 and a pull cord 2. The shielding component 1 includes a plurality of shielding pieces 3, which are arranged along their own length direction. Adjacent shielding pieces 3 are connected and can rotate relative to each other.

[0041] The shielding plate 3 is provided with a perforation 4. One end of the pull rope 2 is fixed to the shielding plate 3 at the head. The pull rope 2 passes through the perforations 4 on several shielding plates 3 in sequence and comes out from the perforation 4 on the shielding plate 3 at the tail. An elastic element 5 is connected between two adjacent shielding plates 3. The elastic element 5 is used to provide elastic force so that the shielding assembly 1 can be rolled into a cylindrical shape when no external force is applied. At this time, the shielding assembly 1 is in the initial state. The shielding assembly 1 in the initial state can pass through the abdominal cavity passage.

[0042] The pull cord 2 is provided with a limiting member 6, which is used to limit the length of the pull cord 2 that is threaded into the shielding assembly 1. The position of the limiting member 6 on the pull cord 2 is adjustable. When the shielding assembly 1 is in the initial state, by pulling the pull cord 2, the length of the pull cord 2 that is threaded into the shielding assembly 1 is reduced, causing the two adjacent shielding plates 3 to rotate relative to each other. This causes the shielding assembly 1 to bend in the opposite direction into an arc shape, and the elastic member 5 is squeezed by the two corresponding shielding plates 3. The squeezed elastic member 5 forms a protruding structure protruding from the inner side of the shielding assembly 1. The inner side of the shielding assembly 1 is used to contact the left lobe of the liver.

[0043] In this application, an elastic element 5 is provided between two adjacent shielding pieces 3. The elastic element 5 provides elastic force so that the shielding assembly 1 can be rolled into a cylindrical shape when no external force is applied. At this time, the shielding assembly 1 is in its initial state, with a small volume and cross-sectional area, allowing it to pass through the patient's abdominal passage. This facilitates the shielding assembly 1 extending from the outside to the abdominal cavity along the abdominal passage. After the shielding assembly 1 is extended into the abdominal cavity, the length of the pull rope 2 for threading through the shielding assembly 1 is reduced by pulling the pull rope 2, causing the two adjacent shielding pieces 3 to... The rotation causes the shielding component 1 to bend in the opposite direction into an arc shape. Simultaneously, the elastic sheet is compressed by the corresponding two shielding sheets 3, forming a protruding structure on the inner side of the shielding component 1. Under the action of the limiting member 6, the length of the pull rope 2 that is threaded through the shielding component 1 is limited, thereby improving the stability of the shielding component 1 when bent into an arc shape. The patient's left lobe of the liver can be shielded by the arc-shaped shielding component 1. Furthermore, when used in conjunction with the suspension device, the shielding component 1 can support and shield the left lobe of the liver, thereby improving the protective effect on the left lobe of the liver and preventing... To prevent injury or cut to the liver, the elastic element 5 serves two purposes. First, when the shielding component 1 is bent into an arc shape, the elastic element 5 forms a protruding structure. This protrusion increases the roughness of the side of the shielding component 1 that contacts the left lobe of the liver, further improving the anti-slip effect of the shielding component 1 and thus enhancing the stability of the left lobe of the liver when it is supported. Second, when it is necessary to remove the shielding component 1 from the patient's body, by increasing the length of the pull rope 2 for threading through the shielding component 1, the elastic element 5 can exert its own elastic force. The lower deformation causes the two adjacent shielding plates 3 to rotate relative to each other, making the shielding component 1 gradually tend towards a cylindrical rolled-up shape. This makes it easier for medical staff to use surgical forceps to clamp the shielding component 1 out of the abdominal cavity along the abdominal cavity passage and out of the body, thereby improving the convenience of removing the shielding component 1 from the patient's body. Among them, under the action of the elastic element 5, when the shielding component 1 gradually tends towards a cylindrical rolled-up shape, medical staff can control the surgical forceps to make the shielding component 1 roll up further, making the shielding component 1 roll up tighter and further reducing the cross-sectional area of ​​the rolled-up component.

[0044] Meanwhile, in this application, the shielding component 1 can form a larger protective area after being bent into an arc shape, which can improve the protective effect of the shielding component 1 on the left lobe of the liver. At the same time, the shielding component 1 occupies a small volume when rolled into a cylindrical shape, which is convenient for insertion or removal, so that the size of the surgical incision in the patient's abdomen can be greatly reduced during the entire operation.

[0045] As a preferred embodiment, based on the above method, further, when the blocking component 1 is in the initial state, the cross-sectional shape of the elastic element 5 is arc-shaped, and the arc-shaped concave surface of the elastic element 5 faces the rotation axis between the corresponding two blocking pieces 3.

[0046] Furthermore, when the shielding assembly 1 is in its initial state, the cross-sectional shape of the elastic member 5 is arc-shaped, and the arc-shaped concave surface of the elastic member 5 faces the rotation axis between the two corresponding shielding pieces 3. Thus, when the shielding assembly 1 gradually bends in the opposite direction from its initial state, it is more conducive to the elastic member 5 being gradually squeezed into a protruding structure protruding from the inner side of the shielding assembly 1.

[0047] As a preferred embodiment, based on the above method, the elastic element 5 is further made of rubber or silicone.

[0048] Furthermore, the elastic element 5 is made of rubber or silicone, which gives the elastic element 5 good elasticity so that it can bend into a convex structure after being squeezed, and at the same time, it can easily recover when no external force is applied.

[0049] As a preferred embodiment, based on the above method, when the blocking component 1 is bent into an arc shape in the reverse direction and is at its maximum reverse bending degree, the blocking component 1 is in a blocking state. At this time, in the direction from the blocking piece 3 at the head to the blocking piece 3 at the tail, the height h of the protrusion structure of the elastic member 5 protruding from the inner side of the blocking component 1 gradually decreases.

[0050] Furthermore, when the shielding assembly 1 is in the shielding state, the height h of the protrusion structure of the elastic member 5 protruding from the inner side of the shielding assembly 1 gradually decreases in the direction from the head shielding plate 3 to the tail shielding plate 3. This results in a higher height for the protrusion structure near the head shielding plate 3. Since the head shielding plate 3 is used to support the left lobe of the liver, its higher height allows for greater roughness in this area of ​​the shielding assembly 1, providing greater friction and making the contact between the left lobe of the liver and the part of the shielding assembly 1 near the head shielding plate 3 more stable. Simultaneously, the height h of the protrusion structure near the tail shielding plate 3... The structure is relatively low in height, and its lower and gentler protrusions make it easier to make the roughness of this part of the shielding component 1 relatively small. When shielding and protecting the left lobe of the liver, it is easier for the left lobe of the liver to move relative to the shielding piece 3 near the tail of the shielding component 1, and it is easier to constrain the left lobe of the liver within the arc-shaped shielding component 1. In this way, while providing stable support for the bottom of the left lobe of the liver, it is also easier to constrain and contain the non-bottom area of ​​the left lobe of the liver, so as to constrain the non-bottom area of ​​the left lobe of the liver within the arc-shaped shielding component 1. Here, the bottom of the left lobe of the liver refers to the part that is supported upward by the shielding component 1.

[0051] Meanwhile, based on the principle that the height h of the protrusion structure of the elastic member 5 protruding from the inner side of the shielding assembly 1 gradually decreases in the direction from the head shielding plate 3 to the tail shielding plate 3, the width of the elastic member 5 near the head shielding plate 3 can be wider, and the width of the elastic member 5 near the tail shielding plate 3 can be narrower. The width of the elastic member 5 is α. The wider elastic member 5 can form a higher protrusion structure after being compressed, and the narrower elastic member 5 can form a lower protrusion structure after being compressed. Simultaneously, when the shielding assembly 1 returns from the shielding state... During the process of returning to the initial state, the wider elastic element 5 is more conducive to the two corresponding blocking plates 3 rotating at a larger angle during the deformation recovery process. This results in a larger rotation angle between the blocking plate 3 near the head and the adjacent blocking plate 3. When the blocking assembly 1 is rolled up, the bending amplitude between the inner blocking plate 3 and the adjacent blocking plate 3 is usually larger, while the bending amplitude between the adjacent blocking plates 3 is smaller closer to the outer side. This makes it easier for the blocking assembly 1 to roll up into a cylindrical structure with the blocking plate 3 at the head on the inside and the blocking plate 3 at the tail on the outside.

[0052] As a preferred embodiment, based on the above method, a flexible connection is further adopted between two adjacent shielding sheets 3.

[0053] Furthermore, by making the two adjacent shielding plates 3 flexibly connected, rubber can be used as the medium for the flexible connection between the two shielding plates 3, so that the two adjacent shielding plates 3 can rotate relative to each other.

[0054] Example 2: Based on the technical solution of Example 1, further details are provided below. Figure 6 As shown, in a preferred embodiment, based on the above method, the limiting member 6 further includes a base 7, a spring 8 and a movable member 9. The movable member 9 is slidably disposed on the base 7. One end of the spring 8 is connected to the base 7 and the other end is connected to the movable member 9. A clamping area 10 is formed between the movable member 9 and the base 7. The clamping area 10 is used for the pull rope 2 to pass through.

[0055] When the limiting member 6 is not subjected to external force, the spring 8 provides elastic force to compress and clamp the pull rope 2 between the movable member 9 and the base 7, so that the pull rope 2 is fixed relative to the limiting member 6;

[0056] By pressing the movable part 9, the movable part 9 can be moved relative to the base 7, so that the limiting part 6 can release the fixation of the pull rope 2;

[0057] The limiting member 6 can abut against the tail cover 3.

[0058] Furthermore, when the movable part 9 is pressed, it can move relative to the base 7, thereby releasing the limiting part 6 from fixing the pull rope 2. This facilitates the movement of the limiting part 6 relative to the pull rope 2, allowing adjustment of the position of the limiting part 6 on the pull rope 2. After the external force is removed, the elasticity provides elastic force to compress and clamp the pull rope 2 between the movable part 9 and the base 7, thus fixing the pull rope 2 relative to the limiting part 6. This facilitates fixing the limiting part 6 after adjustment. With the limiting part 6 able to abut against the tail cover 3, it is also more conducive to limiting and adjusting the length of the pull rope 2 for threading into the cover assembly 1.

[0059] Example 3: Based on the technical solution of Example 2, further details are provided below. Figures 1-5 As shown, the tissue protection shielding device for laparoscopic surgery also includes a suspension rope 11, one end of which is used to connect to the shielding component 1, and the other end is used to fix it to the patient's abdominal wall to fix the shielding component 1 in the patient's abdominal cavity.

[0060] Furthermore, by setting up a suspension rope 11, one end of the suspension rope 11 is connected to the shielding component 1, and the other end is used to fix it to the patient's abdominal wall, thereby facilitating the fixation of the shielding component 1 in the patient's abdominal cavity. At the same time, the way the suspension rope 11 is fixed to the patient's abdominal wall in this application is similar to the current way of fixing sutures to the abdominal wall, which belongs to the prior art and will not be described in detail here.

[0061] As a preferred embodiment, based on the above method, the suspension rope 11 further includes at least three ropes, with at least two suspension ropes 11 connected to the head of the shielding component 1 and at least one suspension rope 11 connected to the tail of the shielding component 1.

[0062] Furthermore, by setting at least three suspension ropes 11, the stability of the shielding component 1 fixed in the patient's abdominal cavity can be further improved.

[0063] As a preferred embodiment, based on the above method, the shielding component 1 can be rolled into a straight cylindrical structure with a diameter of 12-16mm.

[0064] Furthermore, the shielding component 1 can be rolled into a straight cylindrical structure with a diameter of 12-16mm, which facilitates the application of the shielding component 1 to the abdominal cavity passages commonly used in clinical practice, thereby further improving the smoothness of the shielding component 1 passing through the abdominal cavity passage.

[0065] As a preferred embodiment, based on the above method, the blocking component 1 is further in a semi-circular arc shape when it is in a blocking state.

[0066] Furthermore, when the shielding component 1 is in the shielding state, the shielding component 1 is made into a semi-circular arc shape, which further facilitates the shielding and protection of the left lobe of the liver. The diameter of the semi-circular arc shape can be 5cm-7cm so that the semi-circular arc-shaped shielding component 1 can be adapted to the left lobe of the liver.

[0067] The above embodiments are only used to illustrate the present invention and are not intended to limit the technical solutions described herein. Although the present invention has been described in detail with reference to the above embodiments, the present invention is not limited to the specific embodiments described above. Therefore, any modifications or equivalent substitutions to the present invention, as well as all technical solutions and improvements that do not depart from the spirit and scope of the invention, are covered within the scope of the claims of the present invention.

Claims

1. A tissue protection shield for use in endoscopic surgery, characterized by: It includes a shielding assembly and a pull cord. The shielding assembly includes several shielding plates, which are arranged along their own length. Adjacent shielding plates are connected and can rotate relative to each other. The shielding plate has perforations. One end of the pull rope is fixed to the first shielding plate. The pull rope passes through the perforations on several shielding plates in sequence and comes out from the perforation on the last shielding plate. An elastic element is connected between two adjacent shielding plates. The elastic element is used to provide elastic force so that the shielding assembly can be rolled into a cylindrical shape when no external force is applied. At this time, the shielding assembly is in the initial state. The shielding assembly in the initial state can pass through the abdominal cavity passage. The pull cord is equipped with a limiting member to limit the length of the pull cord that is threaded through the shielding assembly. The position of the limiting member on the pull cord is adjustable. When the shielding assembly is in the initial state, pulling the pull cord reduces the length of the pull cord that is threaded through the shielding assembly, causing two adjacent shielding plates to rotate relative to each other. This causes the shielding assembly to bend in the opposite direction into an arc shape, and the elastic element is squeezed by the corresponding two shielding plates. The squeezed elastic element forms a protruding structure protruding from the inner side of the shielding assembly. The inner side of the shielding assembly is used to contact the left lobe of the liver. When the shielding assembly is in its initial state, the cross-sectional shape of the elastic element is arc-shaped, and the arc-shaped concave surface of the elastic element faces the rotation axis between the two corresponding shielding pieces. When the shielding component is bent into an arc shape in the reverse direction and is at its maximum reverse bending degree, the shielding component is in a shielding state. At this time, in the direction from the shielding piece at the head to the shielding piece at the tail, the height h of the protrusion structure of the elastic element protruding from the inner side of the shielding component gradually decreases. A flexible connection is used between two adjacent shielding panels; The limiting member includes a base, a spring, and a movable member. The movable member is slidably mounted on the base. One end of the spring is connected to the base, and the other end is connected to the movable member. A clamping area is formed between the movable member and the base, and the clamping area is used for the pull rope to pass through. When no external force is applied to the limiting member, the spring provides elastic force to compress and clamp the pull rope between the moving member and the base, so that the pull rope is fixed relative to the limiting member; By pressing the movable part, the movable part can be moved relative to the base, thereby releasing the limiting part from fixing the pull rope; The limiting member can abut against the tail shield.

2. A tissue protection shield device for use in endoscopic surgery according to claim 1, characterized in that: The elastic element is made of rubber or silicone.

3. The tissue protection shielding device for laparoscopic surgery as described in claim 1, characterized in that: The laparoscopic surgical tissue protection shielding device also includes a suspension rope, one end of which is used to connect to the shielding component, and the other end is used to fix it to the patient's abdominal wall to fix the shielding component in the patient's abdominal cavity.

4. A tissue protection shield device for use in endoscopic surgery as claimed in claim 3, wherein: The suspension ropes include at least three ropes, with at least two ropes connected to the head of the shielding assembly and at least one rope connected to the tail of the shielding assembly.

5. A tissue protection shield device for use in endoscopic surgery as claimed in claim 4, wherein: The shielding component can be rolled into a straight cylindrical structure with a diameter of 12-16 mm.

6. A tissue protection shield device for use in endoscopic surgery as claimed in claim 5, wherein: When the blocking component is in the blocking state, the blocking component is in a semi-circular arc shape.

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