Hand-free minimally invasive liver suspension device for laparoscopic surgery

Abstract

The utility model discloses a hand-free minimally invasive liver suspension device for laparoscopic surgery. The hand-free minimally invasive liver suspension device comprises a suspension mechanism and a dissociation mechanism, the suspension mechanism comprises a clamping seat; the upper end of the square sleeve of the clamping seat is rotationally connected with the sleeve, and the inner wall of the sleeve is provided with threads to be connected with the lifting rod; a spherical cover is arranged on the lifting rod; a threaded hole is formed in the outer wall of the spherical cover and is connected with a screw rod II; the outer wall of the lower end of the hollow sleeve is provided with a hemisphere with the same diameter as the spherical cover, and the upper end of the hollow sleeve is provided with a threaded hole connected with the third screw. The dissociation mechanism comprises a round rod, three clamping grooves are formed in the front end of the round rod in an array mode and are the middle clamping groove and the two side clamping grooves, and the outer wall of the rear end of the round rod is provided with a thread connection winding disc; the distance between the upper side and the lower side of the clamping rod is consistent with the length of the clamping groove; and the cords are respectively mounted in the circular holes formed in the clamping grooves.

Description

Technical Field

[0001] The utility model relates to medical equipment technology, in particular to a hands-free minimally invasive liver suspension device for laparoscopic surgery. Background Art

[0002] When performing surgery on the stomach, esophagus, pancreas, etc., in order to ensure a clear and adequate surgical field of view, it is often necessary to suspend the left lateral lobe of the liver. This step is particularly important when dealing with obese patients or patients with hypertrophy of the left lobe of the liver. Suspension of the liver not only helps the surgeon to see the surgical area more clearly, reducing blind spots and errors during the operation, but also ensures stability and safety during the operation;

[0003] However, in the current surgical operation, the free exposure of the liver has the following difficulties. First, the liver free exposure device in the prior art can only rely on the medical assistant to hold the retractor, which takes a long time to operate and occupies human resources. Second, the retractor in the prior art, such as a laparoscopic liver suspension device disclosed in patent document CN211534580U, needs to open a separate abdominal operation hole of 5-10 mm. The operation hole is relatively large, which has a great impact on the subsequent recovery of the human body.

[0004] In summary, it is necessary to design a hands-free minimally invasive liver suspension device for laparoscopic surgery to address the problems in the prior art, so as to solve the problem that the liver is free in the abdominal cavity with a large opening and the medical assistant needs to hold the free liver for a long time during the operation. Utility Model Content

[0005] The purpose of the utility model is to provide a hands-free minimally invasive liver suspension device for laparoscopic surgery. A free mechanism is provided to stably clamp the left lateral lobe of the patient's liver, expose the surgical field of view, and facilitate operation. A suspension mechanism is provided to suspend the free mechanism, thereby avoiding medical staff holding the free mechanism for a long time and wasting time.

[0006] In order to achieve the above technical objectives and the above technical effects, the present invention is implemented through the following technical solutions:

[0007] A hands-free minimally invasive liver suspension device for laparoscopic surgery, comprising: a suspension mechanism, a free mechanism;

[0008] The suspension mechanism comprises a base; a threaded hole is provided on the side wall of the base to connect with screw rod 1, a square sleeve is provided on the periphery of the threaded hole to movably connect with the lifting rod, the upper end of the square sleeve of the base is rotatably connected with the sleeve, a threaded connection is provided on the inner wall of the sleeve to connect with the lifting rod, and the lifting rod is pushed up and down in the square sleeve by rotating the sleeve; a spherical cover is provided on the lifting rod; the inside of the spherical cover is rotatably connected with a universal sleeve, a threaded hole is provided on the outer wall of the spherical cover to connect with screw rod 2, and the universal sleeve is pressed to limit the rotation of the universal sleeve by rotating screw rod 2; the universal sleeve is a hollow sleeve, a hemisphere with the same diameter as the spherical cover is provided on the outer wall of the lower end of the hollow sleeve, and a threaded hole is provided on the upper end to connect with screw rod 3;

[0009] The free mechanism comprises a round rod, three slots are arranged in an array on the front end of the round rod, namely a middle slot and two side slots, and a threaded connection to a take-up reel is arranged on the outer wall of the rear end of the round rod; an elastic element is arranged at the upper end of the middle slot, which is movably connected to a clamping rod, and a round hole is arranged at the lower end; elastic elements are arranged at the lower ends of the two side slots, and round holes are arranged at the upper ends, and the clamping rod is connected through the elastic elements, and the middle slot is installed opposite to the clamping rods in the two side slots; one side of the clamping rod is connected to the elastic element, and the other side is connected to the take-up reel through a rope, and the distance between the upper and lower sides of the clamping rod is consistent with the length of the slot; the ropes are respectively installed in the round holes opened on the slots;

[0010] Furthermore, the square sleeve is hollow inside, the lower part of the internal hollow cavity is a rectangular cavity, and the upper part is a cylindrical cavity. The upper end of the square sleeve is rotatably connected to the sleeve, and the inside of the square sleeve is movably connected to the lifting rod, and the threads arranged on the inner wall of the sleeve cooperate with the threads on the outer wall of the lifting rod, and the lifting rod is driven to move up and down by rotating the sleeve;

[0011] Furthermore, the lifting rod is an L-shaped rod, the lower end of the lifting rod is movably connected to the square sleeve and the sleeve, a spherical cover is arranged at the front end of the lifting rod, a threaded hole is arranged on the wall of the spherical cover to connect the second screw, the inside of the spherical cover corresponds to the hemisphere connected to the outer wall of the universal sleeve, the universal sleeve is rotated to adjust the angle of the universal sleeve, and the outer wall of the hemisphere is squeezed by rotating the second screw to limit the rotation of the universal sleeve;

[0012] Furthermore, the universal sleeve is a hollow sleeve, the outer wall of the lower end of the hollow sleeve is provided with a hemisphere with the same diameter as the spherical cover, the upper end is provided with a threaded hole connected to the screw rod three, the universal sleeve is movably connected to the round rod inside, the round rod can move forward and backward along the universal sleeve, and the round rod is pressed by rotating the screw rod three to limit the rotation and sliding of the round rod;

[0013] Furthermore, a threaded connection to a take-up drum is arranged on the outer wall at the rear end of the round rod, and three slots are arranged in an array on the front end surface, namely a middle slot and two side slots, the length of the slots being between 4 / 5 and 1 of the diameter of the cylinder, an elastic element is arranged at the upper end of the middle slot for movably connecting to a clamping rod, and a circular hole is arranged at the lower end that penetrates the cylinder and passes through the outer wall at the rear end of the cylinder; elastic elements are arranged at the lower ends of the two side slots for respectively connecting to clamping columns, and circular holes are arranged at the upper ends that penetrate the cylinder and pass through the rear end of the cylinder, and a wire rope is movably installed inside the circular holes provided in the middle slot and the two side slots, one end of the wire rope is connected to the clamping rod, and the other end is connected to the take-up drum;

[0014] The clamping rod is slidably installed in the slot, and the clamping rods in the middle slot and the two side slots are installed relatively, and the front end of the clamping rod always keeps a horizontal state, and the upper and lower sides of the clamping rod are consistent with the length of the slot. By rotating the take-up drum, the rope is tightened, driving the middle slot and the clamping rods in the two side slots to move relative to each other, so that the clamping rod in the middle slot and the clamping rods in the two side slots form a U-shaped structure, rotating the universal sleeve and controlling the up and down movement of the round rod, so that the left outer lobe of the liver is in the middle of the U-shaped structure, slowly rotating the take-up drum, under the action of the elastic element, the distance between the two sides of the U-shaped structure formed by the clamping rod in the middle slot and the clamping rod in the two side slots is reduced until the left outer lobe of the liver is clamped, rotating the universal sleeve, driving the cylinder clamping the left outer lobe of the liver to move, and the left outer lobe of the liver is moved away to expose the surgical field of view, and rotating the screw second to limit the rotation of the universal sleeve, rotating the screw third to limit the rotation and up and down movement of the cylinder, and completing the freeing and suspension of the left outer lobe of the liver.

[0015] The beneficial effects of the utility model are:

[0016] The utility model discloses a hands-free minimally invasive liver suspension device for laparoscopic surgery, comprising: a suspension mechanism, a free mechanism; the free mechanism is provided, wherein the free mechanism comprises: a round rod, a clamping rod, a take-up drum, a wire rope, and an elastic element; under normal conditions, under the action of the elastic elements in the middle clamping groove and the clamping grooves on both sides, the clamping rod is tightened by the elastic element; at this time, the spacing between the two sides of the U-shaped structure formed by the relatively installed clamping rod is the smallest and is smaller than the diameter of the cylinder; after the clamping rod is inserted into the human body along the puncture hole, the take-up drum outside the body is rotated, and the two sides of the U-shaped structure formed by the relatively installed clamping rod are tightened. The spacing is gradually increased and opened in the human body. The cylinder is moved so that the left outer lobe of the liver is located in the middle of the U-shaped structure. The take-up reel is slowly rotated, and the spacing on both sides of the U-shaped structure is reduced until the left outer lobe of the liver is clamped. The left outer lobe of the liver can be freed by rotating the round rod. A clamping rod is provided with a spacing on both sides of the U-shaped structure formed when contracted that is smaller than the diameter of the cylinder. After the clamping rod is extended into the human body, it can be controlled by the freeing mechanism to extend into the human body and then open to clamp the free liver. This can avoid the problem of opening a larger puncture hole when freeing the liver during the operation, which affects the subsequent recovery of the patient.

[0017] A suspension mechanism is provided, and the suspension mechanism comprises a holder, a screw rod 1, a sleeve, a lifting rod, a universal sleeve, a screw rod 2, and a screw rod 3. The holder clamped on the bed rod is fixed by rotating the screw rod 1, and the lifting rod is driven up and down by rotating the sleeve so that the lower end of the spherical cover on the lifting rod fits the puncture hole, which is convenient for subsequent freeing of the liver. The freeing mechanism is driven to rotate by rotating the universal sleeve to assist in freeing the liver. After the freeing mechanism frees the liver, the screw rod 2 is rotated to compress the hemisphere on the universal sleeve to limit the rotation of the universal sleeve, and the screw rod 3 is rotated to compress the cylinder to limit the rotation and lifting of the cylinder, so that the freeing mechanism is firmly suspended, and there is no need for medical staff to hold the freeing mechanism by hand, which wastes manpower. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings required for describing the embodiments are briefly introduced below.

[0019] Figure 1 The figure is a schematic diagram of the overall structure of a hands-free minimally invasive liver suspension device for laparoscopic surgery;

[0020] Figure 2 It is a schematic cross-sectional structure diagram of a hands-free minimally invasive liver suspension device for laparoscopic surgery;

[0021] Figure 3 A schematic diagram of the structure of a suspension mechanism of a hands-free minimally invasive liver suspension device for laparoscopic surgery;

[0022] Figure 4 A schematic diagram of the structure of a free mechanism of a hands-free minimally invasive liver suspension device for laparoscopic surgery;

[0023] Figure 5 A schematic cross-sectional view of the free mechanism of a hands-free minimally invasive liver suspension device for laparoscopic surgery;

[0024] Figure 6 for Figure 5 A schematic diagram of a local enlarged structure;

[0025] Figure 7 The present invention is a schematic diagram of the mechanism of a universal sleeve of a hands-free minimally invasive liver suspension device for laparoscopic surgery.

[0026] In the accompanying drawings, the names of the components represented by the reference numbers are:

[0027] 101-card holder, 102-screw rod one, 103-square sleeve, 1031-sleeve, 201-lifting rod, 202-spherical cover, 203-screw rod two, 3-universal sleeve, 301-screw rod three, 4-free mechanism, 401-round rod, 4011-card slot, 402-clamp rod, 4021-elastic element, 403-reel, 404-cord. DETAILED DESCRIPTION

[0028] In order to more clearly illustrate the technical solution of the embodiment of the utility model, the utility model will be described in detail with reference to the accompanying drawings.

[0029] The utility model discloses a hand-free minimally invasive liver suspension device for laparoscopic surgery, comprising: a suspension mechanism, a free mechanism 4;

[0030] The suspension mechanism comprises a base 101; a threaded hole is provided on the side wall of the base 101 to connect the screw rod 102, a square sleeve 103 is arranged on the periphery of the threaded hole to movably connect the lifting rod 201, the upper end of the square sleeve 103 of the base 101 is rotatably connected to the sleeve 1031, the inner wall of the sleeve 1031 is provided with a threaded connection to the lifting rod 201, and the lifting rod 201 is pushed up and down in the square sleeve 103 by rotating the sleeve 1031; a spherical cover 202 is provided on the lifting rod 201; the spherical cover 202 is rotatably connected to the universal sleeve 3, the outer wall of the spherical cover 202 is provided with a threaded hole to connect the screw rod 203, and the universal sleeve 3 is pressed by rotating the screw rod 203 to limit the rotation of the universal sleeve 3; the universal sleeve 3 is a hollow sleeve, the outer wall of the lower end of the hollow sleeve is provided with a hemisphere with the same diameter as the spherical cover 202, and the upper end is provided with a threaded hole to connect the screw rod 3 301;

[0031] The free mechanism 4 includes a round rod 401, and three slots 4011 are arranged in an array on the front end of the round rod 401, namely a middle slot 4011 and two side slots 4011, and a threaded connection is set on the outer wall of the rear end of the round rod 401 to connect the take-up drum 403; an elastic element 4021 is set at the upper end of the middle slot 4011 to movably connect the clamping rod 402, and a round hole is set at the lower end; elastic elements 4021 are set at the lower ends of the two side slots 4011, and round holes are set at the upper ends, and the clamping rod 402 is connected through the elastic elements 4021, and the middle slot 4011 is installed opposite to the clamping rods 402 in the two side slots 4011; one side of the clamping rod 402 is connected to the elastic element 4021, and the other side is connected to the take-up drum 403 through a rope 404, and the distance between the upper and lower sides of the clamping rod 402 is consistent with the length of the slot 4011; the rope 404 is respectively installed in the round holes opened in the slot 4011;

[0032] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the accompanying drawings in the embodiments of the present invention; it is obvious that the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0033] Example 1

[0034] like Figure 3 The figure shows a schematic diagram of the structure of the suspension mechanism of the utility model. In the utility model, a suspension mechanism is provided, and the suspension mechanism comprises: a holder 101; a threaded hole is provided on the side wall of the holder 101 to connect a screw rod 102, a square sleeve 103 is provided on the periphery of the threaded hole to movably connect a lifting rod 201, the upper end of the square sleeve 103 of the holder 101 is rotatably connected to a sleeve 1031, and a threaded connection is provided on the inner wall of the sleeve 1031 to connect the lifting rod 201, and the sleeve 1031 is rotated to push the lifting rod 201. The lifting rod 201 moves up and down in the square sleeve 103; a spherical cover 202 is arranged on the lifting rod 201; the spherical cover 202 is rotatably connected to the universal sleeve 3, and a threaded hole is arranged on the outer wall of the spherical cover 202 to connect the second screw 203, and the universal sleeve 3 is pressed by rotating the second screw 203 to limit the rotation of the universal sleeve 3; the universal sleeve 3 is a hollow sleeve, and a hemisphere with the same diameter as the spherical cover 202 is arranged on the outer wall of the lower end of the hollow sleeve, and a threaded hole is arranged on the upper end to connect the third screw 301;

[0035] In this embodiment, the square sleeve 103 is hollow inside, the lower part of the internal hollow cavity is a rectangular cavity, and the upper part is a cylindrical cavity. The upper end of the square sleeve 103 is rotatably connected to the sleeve 1031, and the inside of the square sleeve 103 is movably connected to the lifting rod 201, and the threads set on the inner wall of the sleeve 1031 cooperate with the threads on the outer wall of the lifting rod 201, and the lifting rod 201 is driven to move up and down by rotating the sleeve 1031;

[0036] Furthermore, the lifting rod 201 is an L-shaped rod, the lower end of the lifting rod 201 is movably connected to the square sleeve 103 and the sleeve 1031, a spherical cover 202 is arranged at the front end of the lifting rod 201, a threaded hole is provided on the wall of the spherical cover 202 to connect the screw rod 203, the interior of the spherical cover 202 corresponds to the hemisphere connected to the outer wall of the universal sleeve 3, the universal sleeve 3 is rotated to adjust the angle of the universal sleeve 3, and the outer wall of the hemisphere is squeezed by rotating the screw rod 203 to limit the rotation of the universal sleeve 3;

[0037] Furthermore, the universal sleeve 3 is a hollow sleeve, the outer wall of the lower end of the hollow sleeve is provided with a hemisphere with the same diameter as the spherical cover 202, the upper end is provided with a threaded hole connected to the screw rod 301, the internal of the universal sleeve 3 is movably connected to the round rod 401, the round rod 401 can move forward and backward along the universal sleeve 3, and the round rod 401 is pressed by rotating the screw rod 301 to limit the rotation and sliding of the round rod 401;

[0038] In this embodiment, the base 101 stuck on the bed rod is fixed by rotating the screw 102, and the sleeve 1031 is rotated to drive the lifting rod 201 to move up and down, so that the lower end of the spherical cover 202 on the lifting rod 201 fits the puncture hole, which is convenient for the subsequent free liver. The universal sleeve 3 is rotated to drive the free mechanism 4 to rotate to assist the free liver. After the free mechanism 4 frees the liver, the screw 203 is rotated, and the screw 203 presses the hemisphere on the universal sleeve 3 to limit the rotation of the universal sleeve 3. The screw 301 is rotated, and the screw 301 presses the cylinder to limit the rotation and lifting of the cylinder, and the free mechanism 4 is firmly suspended, and there is no need for medical staff to hold the free mechanism 4, which wastes manpower.

[0039] Example 2

[0040] like Figure 4 The figure shows a schematic diagram of the structure of the free mechanism 4 of the utility model. In the utility model, the free mechanism 4 includes a round rod 401, and three slots 4011 are arranged in an array on the front end of the round rod 401, namely a middle slot 4011 and two side slots 4011. The outer wall of the rear end of the round rod 401 is provided with a threaded connection to the take-up reel 403; the upper end of the middle slot 4011 is provided with an elastic element 4021 movably connected to the clamping rod 402, and the lower end is provided with a round hole; the lower ends of the two side slots 4011 are both provided with elastic elements 40 21, a circular hole is set at the upper end, and the clamping rod 402 is connected through the elastic element 4021, and the middle slot 4011 is installed relative to the clamping rod 402 in the slots 4011 on both sides; one side of the clamping rod 402 is connected to the elastic element 4021, and the other side is connected to the take-up reel 403 through the rope 404, and the distance between the upper and lower sides of the clamping rod 402 is consistent with the length of the slot 4011; the rope 404 is respectively installed in the circular holes opened on the slot 4011, and the actual structural diagram of the clamping rod 402 installed in the slot 4011 can be referred to Figure 6 The actual structure of the wire rope 404 installed inside the cylinder and connected to the take-up drum 403 and the clamping rod 402 can be referred to Figure 5 ;

[0041] In this embodiment, a threaded connection is provided on the outer wall of the rear end of the round rod 401 to connect the wire take-up drum 403, and three slots 4011 are arranged in an array on the front end surface, namely a middle slot 4011 and two side slots 4011, the length of the slots 4011 is between 4 / 5 and 1 of the diameter of the cylinder, an elastic element 4021 is provided on the upper end of the middle slot 4011 to movably connect with the clamping rod 402, and a circular hole is provided at the lower end to penetrate the cylinder and pass from the outer wall of the rear end of the cylinder; elastic elements 4021 are provided at the lower ends of the two side slots 4011 to connect with the clamping columns respectively, and circular holes are provided at the upper ends to penetrate the cylinder and pass from the rear end of the cylinder, and a wire rope 404 is movably installed inside the circular holes provided on the middle slot 4011 and the two side slots 4011, one end of the wire rope 404 is connected with the clamping rod 402, and the other end is connected with the wire take-up drum 403;

[0042] In this embodiment, the clamping rod 402 is slidably installed in the slot 4011, and the middle slot 4011 is relatively installed with the clamping rod 402 in the slots 4011 on both sides. The front end of the clamping rod 402 always remains in a horizontal state, and the distance between the upper and lower sides of the clamping rod 402 is consistent with the length of the slot 4011. By rotating the take-up reel 403, the wire rope 404 is tightened, driving the middle slot 4011 and the clamping rod 402 in the slots 4011 on both sides to move relative to each other, so that the clamping rod 402 in the middle slot 4011 and the clamping rod 402 in the slots 4011 on both sides are formed into a U-shaped structure, and the universal sleeve 3 is rotated to control the circle The rod 401 moves up and down, so that the left outer lobe of the liver is in the middle of the U-shaped structure, and the take-up drum 403 is slowly rotated. Under the action of the elastic element 4021, the distance between the two sides of the U-shaped structure formed by the clamping rod 402 in the middle clamping groove 4011 and the clamping rod 402 in the two side clamping grooves 4011 is reduced until the left outer lobe of the liver is clamped, and the universal sleeve 3 is rotated to drive the cylinder clamping the left outer lobe of the liver to move, so that the left outer lobe of the liver is moved away to expose the surgical field of view, and the screw rod 203 is rotated to limit the rotation of the universal sleeve 3, and the screw rod 301 is rotated to limit the rotation and up and down movement of the cylinder, so as to complete the freeing and suspension of the left outer lobe of the liver;

[0043] In this embodiment, the take-up reel 403 is a prior art and will not be described in detail in this utility model.

[0044] In summary, the utility model discloses a hands-free minimally invasive liver suspension device for laparoscopic surgery, comprising: a suspension mechanism, a free mechanism 4; a free mechanism 4 is provided, wherein the free mechanism 4 comprises: a round rod 401, a clamping rod 402, a take-up drum 403, a wire rope 404, and an elastic element 4021. Under normal conditions, under the action of the elastic elements 4021 in the middle clamping groove 4011 and the clamping grooves 4011 on both sides, the clamping rod 402 is tightened by the elastic elements 4021. At this time, the spacing between the two sides of the U-shaped structure formed by the relatively installed clamping rod 402 is the smallest and is smaller than the diameter of the cylinder. After the clamping rod 402 is inserted into the human body along the puncture hole, the take-up drum 403 outside the body is rotated. 3. The spacing between the two sides of the U-shaped structure formed by the relatively installed clamping rod 402 is gradually increased, and it is opened in the human body. The cylinder is moved so that the left outer lobe of the liver is located in the middle of the U-shaped structure. The take-up reel 403 is slowly rotated, and the spacing between the two sides of the U-shaped structure is reduced until the left outer lobe of the liver is clamped. The round rod 401 is rotated to free the left outer lobe of the liver. The clamping rod 402 is set so that the spacing between the two sides of the U-shaped structure formed when contracted is smaller than the diameter of the cylinder. After the clamping rod 402 is extended into the human body, it can be controlled by the freeing mechanism 4 to extend into the human body and then open to clamp the free liver, which can avoid the problem of opening a larger puncture hole when freeing the liver during the operation, which affects the subsequent recovery of the patient;

[0045] A suspension mechanism is provided, which comprises a holder 101, a screw rod 102, a sleeve 1031, a lifting rod 201, a universal sleeve 3, a screw rod 203, and a screw rod 301. The holder 101 stuck on the bed rod is fixed by rotating the screw rod 102, and the lifting rod 201 is driven up and down by rotating the sleeve 1031, so that the lower end of the spherical cover 202 on the lifting rod 201 fits the puncture hole, which is convenient for subsequent freeing of the liver. The universal sleeve 3 is rotated to drive the freeing mechanism 4 to rotate and assist in freeing the liver. After the freeing mechanism 4 frees the liver, the screw rod 203 is rotated, and the screw rod 203 presses the hemisphere on the universal sleeve 3 to limit the rotation of the universal sleeve 3. The screw rod 301 is rotated, and the screw rod 301 presses the cylinder to limit the rotation and lifting of the cylinder, so that the freeing mechanism 4 is firmly suspended, and there is no need for medical staff to hold the freeing mechanism 4, which wastes manpower.

[0046] The preferred embodiments of the present invention disclosed above are only used to help explain the present invention. The preferred embodiments do not describe all the details in detail, nor do they limit the present invention to the specific implementation methods described.

Claims

1. A hands-free minimally invasive liver suspension device for laparoscopic surgery, characterized in that: include: Suspension mechanism, free mechanism; The suspension mechanism comprises a base; a threaded hole is provided on the side wall of the base to connect with screw rod 1, a square sleeve is provided on the periphery of the threaded hole to movably connect with the lifting rod, the upper end of the square sleeve of the base is rotatably connected with the sleeve, a threaded connection is provided on the inner wall of the sleeve to connect with the lifting rod, and the lifting rod is pushed up and down in the square sleeve by rotating the sleeve; a spherical cover is provided on the lifting rod; the inside of the spherical cover is rotatably connected with a universal sleeve, a threaded hole is provided on the outer wall of the spherical cover to connect with screw rod 2, and the universal sleeve is pressed to limit the rotation of the universal sleeve by rotating screw rod 2; the universal sleeve is a hollow sleeve, a hemisphere with the same diameter as the spherical cover is provided on the outer wall of the lower end of the hollow sleeve, and a threaded hole is provided on the upper end to connect with screw rod 3; The free mechanism includes a round rod, and three slots are arranged in an array on the front end of the round rod, namely a middle slot and two side slots, and a threaded connection to a wire take-up drum is arranged on the outer wall of the rear end of the round rod; an elastic element is arranged at the upper end of the middle slot to movably connect a clamping rod, and a round hole is arranged at the lower end; elastic elements are arranged at the lower ends of the two side slots, round holes are arranged at the upper ends, and the clamping rod is connected through the elastic elements, and the middle slot is installed opposite to the clamping rods in the two side slots; one side of the clamping rod is connected to the elastic element, and the other side is connected to the wire take-up drum through a rope, and the distance between the upper and lower sides of the clamping rod is consistent with the length of the slot; the ropes are respectively installed in the round holes opened on the slots.

2. A hands-free minimally invasive liver suspension device for laparoscopic surgery according to claim 1, characterized in that: The square sleeve is hollow inside, the lower part of the internal hollow cavity is a rectangular cavity, and the upper part is a cylindrical cavity. The upper end of the square sleeve is rotatably connected to the sleeve, and the inside of the square sleeve is movably connected to the lifting rod. The thread set on the inner wall of the sleeve cooperates with the thread on the outer wall of the lifting rod, and the lifting rod is driven to move up and down by rotating the sleeve.

3. A hands-free minimally invasive liver suspension device for laparoscopic surgery according to claim 1, characterized in that: The lifting rod is an L-shaped rod, the lower end of which is movably connected to a square sleeve and a sleeve, a spherical cover is arranged at the front end of the lifting rod, a threaded hole is provided on the wall of the spherical cover to connect screw rod 2, the inside of the spherical cover corresponds to a hemisphere connected to the outer wall of the universal sleeve, the universal sleeve is rotated to adjust the angle of the universal sleeve, and the outer wall of the hemisphere is squeezed by rotating screw rod 2 to limit the rotation of the universal sleeve.

4. A hands-free minimally invasive liver suspension device for laparoscopic surgery according to claim 1, characterized in that: The universal sleeve is a hollow sleeve, the outer wall of the lower end of the hollow sleeve is provided with a hemisphere with the same diameter as the spherical cover, the upper end is provided with a threaded hole to connect the screw rod three, the universal sleeve is movably connected to the round rod inside, the round rod can move forward and backward along the universal sleeve, and the round rod can be pressed by rotating the screw rod three to limit the rotation and sliding of the round rod.

5. A hands-free minimally invasive liver suspension device for laparoscopic surgery according to claim 1, characterized in that: The outer wall at the rear end of the round rod is provided with a threaded connection to the wire take-up drum, and three slots are arranged in an array on the front end surface, namely a middle slot and two side slots, the length of the slots is between 4 / 5 and 1 of the diameter of the cylinder, an elastic element is arranged at the upper end of the middle slot for movably connecting to the clamping rod, and a circular hole is arranged at the lower end that penetrates the cylinder and passes through the outer wall of the rear end of the cylinder; elastic elements are arranged at the lower ends of the two side slots for respectively connecting to the clamping columns, and circular holes are arranged at the upper ends that penetrate the cylinder and pass through the rear end of the cylinder; wire ropes are movably installed inside the circular holes provided in the middle slot and the two side slots, one end of the wire rope is connected to the clamping rod, and the other end is connected to the wire take-up drum.

6. A hands-free minimally invasive liver suspension device for laparoscopic surgery according to claim 1, characterized in that: The clamping rod is slidably installed in the slot, and the clamping rods in the middle slot and the two side slots are installed relatively, and the front end of the clamping rod always remains in a horizontal state, and the upper and lower sides of the clamping rod are consistent with the length of the slot. By rotating the take-up drum, the rope is tightened, driving the middle slot and the clamping rods in the two side slots to move relative to each other, so that the clamping rod in the middle slot and the clamping rods in the two side slots form a U-shaped structure, rotating the universal sleeve and controlling the round rod to move up and down, so that the left outer lobe of the liver is in the middle of the U-shaped structure, slowly rotating the take-up drum, under the action of the elastic element, the distance between the two sides of the U-shaped structure formed by the clamping rod in the middle slot and the clamping rods in the two side slots is reduced until the left outer lobe of the liver is clamped, rotating the universal sleeve, driving the cylinder clamping the left outer lobe of the liver to move, and the left outer lobe of the liver is moved away to expose the surgical field of view, and rotating the screw second to limit the rotation of the universal sleeve, rotating the screw third to limit the rotation and up and down movement of the cylinder, and completing the freeing and suspension of the left outer lobe of the liver.

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