In-vivo magnetic type tissue traction clamp for endoscopic surgery

Abstract

The utility model provides an in-vivo magnetic type traction tissue clamp for endoscopic surgery, which comprises an outer tube, symmetrically arranged clamping pieces are arranged at one end of the outer tube, a transition cap and a handle are sequentially arranged at the other end of the outer tube in the direction far away from the clamping pieces, two inhaul cables are arranged in the handle, one ends of the two inhaul cables are respectively connected with the two clamping pieces, and the other ends of the two inhaul cables are respectively connected with the two clamping pieces. The other ends of the two inhaul cables are connected with a sliding block which is installed on a handle. The sliding block can slide along the handle and drives the clamping piece to move through the inhaul cable. The outer circle of the outer pipe is provided with a hemispherical magnetic suction convex block, the outer circle of the outer pipe is further provided with a hemispherical magnetic suction groove, and the included angle between the magnetic suction groove and the magnetic suction convex block is 180 degrees; the magnetic attraction protruding block of one outer pipe and the magnetic attraction groove of the other outer pipe can be attracted into a whole. According to the utility model, the magnetic suction device is additionally arranged at the tail part of the tissue clamp, and the magnetic suction groove of one tissue clamp and the magnetic suction convex block of the other tissue clamp attract each other, so that the utilization rate is high, and the use is convenient.

Description

Technical Field

[0001] The utility model relates to the technical field of medical instruments, in particular to an in vivo magnetic suction type tissue pulling clamp for endoscopic surgery. Background Art

[0002] Endoscopic submucosal dissection (ESD) has become a widely accepted minimally invasive treatment procedure for early gastrointestinal cancer and submucosal tumors due to its high complete resection rate and good safety. The basic procedure is divided into three steps: submucosal injection, circular incision of the mucosa around the lesion, and stripping of the submucosal tissue of the lesion. For some lesions that are difficult to expose during ESD, repeated submucosal injections are generally used, but this will cause a long operation time and increase the risk of complications such as bleeding and perforation; another simple solution is to try to adjust the patient's position according to the direction of gravity so that the stripping surface obtains ideal tension and provides a good operating field, but it is very difficult to adjust the patient's position under general anesthesia, and the selectable positions are limited, which limits the scope of use and effect. Therefore, how to obtain a good surgical field of view during surgery and achieve safe and precise cutting and stripping operations has become the key to solving the above problems.

[0003] At present, COOK endoscopic traction tissue clips can carry up to 3 rubber bands. Commonly used methods for exposing the visual field are:

[0004] One is to clamp a part of the mucosa with a hemostatic clip and a rubber band, and then use another hemostatic clip to grab the rubber band and clamp it to the normal mucosal tissue farther away. The two hemostatic clips are pulled against each other to obtain a visual field.

[0005] The second method is to clamp one part of the tumor with a tissue clamp, and then use an external magnetic suction device to attract the tissue clamp inside the body and adjust it at will to obtain the field of view.

[0006] The following technical defects exist: 1. Low utilization rate and inconvenient use: two hemostatic clips can only expose the field of view in one direction. If the field of view in the other direction needs to be exposed, the hemostatic clips need to be removed and another pair of traction hemostatic clips need to be used for the operation;

[0007] 2. Damage to normal mucosa: When removing the traction clip, the clip needs to be pulled directly off the normal mucosa, which will cause unnecessary damage to the normal mucosa;

[0008] 3. The in vitro magnetic device is limited by the thickness of the human cortex and the strength of the magnetic attraction.

[0009] Therefore, how to design an in vivo magnetic traction tissue clip for endoscopic surgery that is easy to assemble and disassemble and has a high utilization rate has become an urgent problem to be solved. Utility Model Content

[0010] In view of the problems existing in the prior art, the utility model provides an intracorporeal magnetic tissue pulling clamp for endoscopic surgery to solve at least one of the above technical problems.

[0011] The technical scheme of the utility model is: an in vivo magnetic traction tissue clamp for endoscopic surgery, comprising an outer tube, one end of the outer tube is provided with a clamping assembly, the clamping assembly comprises symmetrically arranged clips, two clips can rotate around the same rotation center, the other end of the outer tube is sequentially provided with a transition cap and a handle in a direction away from the clips, two cables are provided in the handle, one end of the two cables is respectively connected to the two clips, the other end of the two cables is connected to a slider, and the slider is installed on the handle; the slider can slide along the handle, and the slider drives the clip to move through the cables; a hemispherical magnetic attraction protrusion is provided on the outer circle of the outer tube, and a hemispherical magnetic attraction groove is also provided on the outer circle of the outer tube, and the angle between the magnetic attraction groove and the magnetic attraction protrusion is 180 degrees; the magnetic attraction protrusion of one outer tube and the magnetic attraction groove of another outer tube can be absorbed into one.

[0012] The utility model is based on the needle holding forceps, and adopts a method of adding a magnetic attraction device to the tail of the tissue clamp. The magnetic attraction device is designed to have one side convex and the other side concave; the magnetic attraction groove of one tissue clamp and the magnetic attraction protrusion of another tissue clamp attract each other, the utilization rate is high, and the use is convenient; one tissue clamp clamps a part of the tumor, and then uses another tissue clamp to clamp normal tissue at a farther distance, and the two tissue clamps attract each other to obtain a field of view; when disassembling, the magnetic attraction devices of the two tissue clamps are separated, and the clamps are disassembled, thereby avoiding damage to the normal mucosa; the magnetic attraction devices of the two tissue clamps are in direct contact, which solves the technical defects of the in vitro magnetic attraction device in the prior art that is limited by the thickness of the human cortex layer and the size of the magnet attraction.

[0013] Preferably, a cube is arranged on the outer circle of the outer tube, the magnetic protrusion and the magnetic groove are respectively located on the top surface and the bottom surface of the cube, and the height of the cube is equal to the outer diameter of the transition cap.

[0014] The utility model adopts a method of arranging a cube on the outer circle of the outer tube, and can raise the height of the magnetic attraction protrusion through the cube, so as to avoid the transition caps from touching each other when the magnetic attraction devices of the two tissue clips are attracted. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is the front view of the installation structure of the utility model.

[0016] Figure 2 It is a top view of the installation structure of the utility model.

[0017] Figure 3 The two utility models are shown in the use state after being magnetically attracted.

[0018] In the figure: 1. Clip; 2. Outer tube; 3. Magnetic protrusion; 4. Transition cap; 5. Cable; 6. Magnetic groove; 7. Slider; 8. Handle; 9. Outer sleeve. DETAILED DESCRIPTION

[0019] The utility model is further described below in conjunction with the accompanying drawings.

[0020] See also Figure 1-3 The structures, proportions, sizes, etc. illustrated in the drawings of this specification are only used to match the contents disclosed in the specification for people familiar with this technology to understand and read, and are not used to limit the limiting conditions for the implementation of the utility model, so they have no substantial technical significance. Any modification of the structure, change of the proportion relationship or adjustment of the size should still fall within the scope of the technical content disclosed by the utility model without affecting the effects and purposes that can be achieved by the utility model. At the same time, the terms such as "upper", "lower", "left", "right", "middle" and "one" quoted in this specification are only for the convenience of description, and are not used to limit the scope of the implementation of the utility model. The change or adjustment of their relative relationship should also be regarded as the scope of the implementation of the utility model without substantial change of the technical content.

[0021] Embodiment 1: An in vivo magnetic tissue traction clip for endoscopic surgery, referring to Figure 1 , Figure 2 , Figure 3, comprising an outer tube 2, one end of which is provided with a clamping assembly, the clamping assembly comprising symmetrically arranged clips 1, the two clips 1 being able to rotate around the same rotation center, the other end of the outer tube 2 being provided with a transition cap 4 and a handle 8 in sequence in the direction away from the clip 1, two cables 5 being provided in the handle 8, one end of the two cables 5 being respectively connected to the two clips 1, the other end of the two cables 5 being connected to a slider 7, the slider 7 being mounted on the handle 8; the slider 7 being able to slide along the handle 8, the slider 7 driving the clip 1 to move through the cables 5; a hemispherical magnetic protrusion 3 being provided on the outer circle of the outer tube 2, a hemispherical magnetic groove 6 being further provided on the outer circle of the outer tube 2, the angle between the magnetic groove 6 and the magnetic protrusion 3 being 180°; the magnetic protrusion 3 of one outer tube 2 and the magnetic groove 6 of another outer tube 2 being able to be absorbed into one. The utility model is based on the needle holding forceps, and adopts a method of adding a magnetic attraction device to the tail of the tissue clamp. The magnetic attraction device is designed to have one side convex and the other side concave; the magnetic attraction groove of one tissue clamp and the magnetic attraction protrusion of another tissue clamp attract each other, the utilization rate is high, and the use is convenient; one tissue clamp clamps a part of the tumor, and then uses another tissue clamp to clamp normal tissue at a farther distance, and the two tissue clamps attract each other to obtain a field of view; when disassembling, the magnetic attraction devices of the two tissue clamps are separated, and the clamps are disassembled, thereby avoiding damage to the normal mucosa; the magnetic attraction devices of the two tissue clamps are in direct contact, which solves the technical defects of the in vitro magnetic attraction device in the prior art that is limited by the thickness of the human cortex layer and the size of the magnet attraction.

[0022] Embodiment 2: Based on embodiment 1, an outer sleeve 9 is provided on one side of the two clips 1 close to the tissue clip body. In the utility model, an outer sleeve is provided on one side of the two clips close to the tissue clip body.

[0023] Embodiment 3: Based on embodiment 1, a hook is provided at one end of any of the clips 1 away from the outer tube 2, and the ligation range between the hooks of the two clips 1 is 8 to 20 mm. The utility model adopts the method of providing a hook at one end of the clip away from the outer tube.

[0024] Embodiment 4: Based on embodiment 1, the spherical diameter of the magnetic protrusion 3 is 1 mm, and the top surface of the magnetic protrusion 3 is 0.5 mm higher than the outer circle of the transition cap 4. In the utility model, the top surface of the magnetic protrusion is 0.5 mm higher than the outer circle of the transition cap, so that the magnetic devices of the two tissue clips avoid touching each other when they are attracted together.

[0025] Embodiment 5: Based on embodiment 1, the spherical diameter of the magnetic groove 6 is 1 mm, and the bottom surface of the magnetic groove 6 is 0.5 mm lower than the outer circle of the transition cap 4. In the utility model, the bottom surface of the magnetic groove is 0.5 mm lower than the outer circle of the transition cap, and the magnetic devices of the two tissue clips avoid touching each other when they are attracted together.

[0026] Embodiment 6: Based on Embodiment 1, a cube is arranged on the outer circumference of the outer tube 2, and the magnetic attraction protrusion 3 and the magnetic attraction groove 6 are respectively located at the top and bottom centers of the cube, and the height of the cube is equal to the outer diameter of the transition cap 4; the outer diameter of the outer tube 2 is 2 mm. The utility model adopts the arrangement of a cube on the outer circumference of the outer tube, which can raise the height of the magnetic attraction protrusion through the cube, so as to avoid the transition cap from touching when the magnetic attraction devices of the two tissue clips are attracted.

[0027] Embodiment 7: On the basis of Embodiment 6, a screw hole is provided in the transition cap 4, and the transition cap 4 includes a truncated cone tube section and a first circular tube section, the first screw hole of the truncated cone tube section is screwed with the first threaded section of the outer circle of the outer tube 2, and the second screw hole of the first circular tube section is screwed with the handle 8. The utility model adopts that the first screw hole and the second screw hole are respectively provided in the transition cap, and the first screw hole and the second screw hole are respectively connected to the outer tube and the handle, so that the outer tube and the handle are connected as one.

[0028] Embodiment 8: Based on Embodiment 7, the handle 8 includes a second circular tube segment, the outer diameter of the second circular tube segment is 2.5 mm, a second threaded segment is provided on the outer ring of one end of the second circular tube segment, the second threaded segment is screwed with the second screw hole of the first circular tube segment, a first circular ring is provided on the end of the second circular tube segment away from the outer tube 2; an open groove is provided in the middle of the second circular tube segment. The utility model adopts a second circular tube segment provided at one end of the handle, the second circular tube segment is connected to the transition cap, and the open groove in the middle of the second circular tube segment can facilitate the connection of the cable with the slider.

[0029] Embodiment 9, on the basis of embodiment 8, the slider 7 includes a sleeve, and symmetrically arranged second rings are provided on both sides of the sleeve, the sleeve is located on the outer ring of the second circular tube segment, the sleeve can slide along the second circular tube segment, and the other end of the cable 5 passes through the open groove and is connected to the sleeve. The utility model uses the cable to connect with the sleeve of the slider, and the sleeve can slide along the second circular tube segment, driving the cable and the clip to move in turn.

[0030] The above are only preferred implementations of the present invention. It should be pointed out that ordinary technicians in this technical field can make several improvements and modifications without departing from the principles of the present invention. These improvements and modifications should also be regarded as the protection scope of the present invention.

Claims

1. An in vivo magnetic tissue traction clamp for endoscopic surgery, comprising an outer tube (2), characterized in that: One end of the outer tube (2) is provided with a clamping assembly, the clamping assembly comprising symmetrically arranged clips (1), the two clips (1) being capable of rotating about the same rotation center, the other end of the outer tube (2) being provided with a transition cap (4) and a handle (8) in sequence in a direction away from the clips (1), two cables (5) being provided in the handle (8), one end of the two cables (5) being connected to the two clips (1) respectively, the other end of the two cables (5) being connected to a slider (7), the slider (7) being mounted on The outer tube (2) is provided with a hemispherical magnetic attraction protrusion (3), and the outer tube (2) is also provided with a hemispherical magnetic attraction groove (6), and the angle between the magnetic attraction groove (6) and the magnetic attraction protrusion (3) is 180 degrees; the magnetic attraction protrusion (3) of one outer tube (2) and the magnetic attraction groove (6) of another outer tube (2) can be attracted to form a whole.

2. The in-vivo magnetic tissue traction clip for endoscopic surgery according to claim 1, characterized in that: An outer sleeve (9) is provided on one side of the two clips (1) close to the tissue clip body.

3. The in-vivo magnetic tissue traction clip for endoscopic surgery according to claim 1, characterized in that: A hook portion is provided at one end of any one of the clips (1) away from the outer tube (2), and the ligation range between the hook portions of the two clips (1) is 8 to 20 mm.

4. The in-vivo magnetic tissue traction clip for endoscopic surgery according to claim 1, characterized in that: The spherical diameter of the magnetic attraction protrusion (3) is 1 mm, and the top surface of the magnetic attraction protrusion (3) is 0.5 mm higher than the outer circle of the transition cap (4).

5. The in-vivo magnetic tissue traction clip for endoscopic surgery according to claim 1, characterized in that: The spherical diameter of the magnetic attraction groove (6) is 1 mm, and the bottom surface of the magnetic attraction groove (6) is 0.5 mm lower than the outer circle of the transition cap (4).

6. The in-vivo magnetic tissue traction clip for endoscopic surgery according to claim 1, characterized in that: A cube is arranged on the outer circle of the outer tube (2), the magnetic attraction protrusion (3) and the magnetic attraction groove (6) are respectively located at the center of the top surface and the center of the bottom surface of the cube, and the height of the cube is equal to the outer diameter of the transition cap (4).

7. The in-vivo magnetic tissue traction clip for endoscopic surgery according to claim 6, characterized in that: The transition cap (4) is provided with a screw hole therein. The transition cap (4) comprises a truncated cone tube section and a first circular tube section. The first screw hole of the truncated cone tube section is screwed into the first threaded section of the outer ring of the outer tube (2), and the second screw hole of the first circular tube section is screwed into the handle (8).

8. The in-vivo magnetic tissue traction clip for endoscopic surgery according to claim 7, characterized in that: The handle (8) comprises a second circular tube segment, an outer ring of one end of the second circular tube segment is provided with a second threaded segment, the second threaded segment is screwed into the second screw hole of the first circular tube segment, and an end of the second circular tube segment away from the outer tube (2) is provided with a first circular ring; and an open groove is provided in the middle of the second circular tube segment.

9. The in-vivo magnetic tissue traction clip for endoscopic surgery according to claim 8, characterized in that: The slider (7) comprises a sleeve, and symmetrically arranged second circular rings are provided on both sides of the sleeve. The sleeve is located on the outer ring of the second circular tube segment, and the sleeve can slide along the second circular tube segment. The other end of the cable (5) passes through the open groove and is connected to the sleeve.

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