Cutter for colorectal surgery

Abstract

The invention discloses a cutter for colorectal surgery, and relates to the technical field of medical instruments, the cutter comprises a colorectal cutter main body and a lower clamping arm capable of getting close to or away from an upper clamping arm, and further comprises a chamber formed in the lower clamping arm, an adjusting plate arranged in the axial direction of the chamber is arranged in the chamber, the width of the adjusting plate is equal to that of the chamber, and the width of the adjusting plate is larger than that of the chamber. An outlet is formed in the top of the cavity and communicates with the outside, one end of the adjusting plate is rotationally connected with the cavity, and the other end of the adjusting plate extends to the outlet. The driving part is arranged in the cavity and at least comprises a lifting plate capable of swinging; according to the colorectum cutter, a doctor operates the colorectum cutter and controls the lower clamping arm to be opened and closed to clamp an intestine, the lifting plate rotates to push the adjusting plate to incline upwards, and then the joint of the edge of the intestine and adipose tissue is lifted up and enters a visible range, when the clamping arms approach, one end of the adjusting plate is only lifted to touch the upper clamping arm, and the doctor operates at the upper visual angle; the adjusting plate tilts to help the adjusting plate to determine the positions of the cutting knife and the anastomosis nail bin assembly.

Description

Technical Field

[0001] The present invention relates to the technical field of medical instruments, in particular to a cutter for colorectal surgery. Background Art

[0002] The colorectal cutter is a common tool used by surgeons to perform surgical resection of cancerous parts of tubular physiological tissues such as the intestine and esophagus. The cutter needs to squeeze and cut the colorectum, while ensuring the sealing of both ends of the intestine. After completion, the remaining good tubular physiological tissues will be connected, or the intestine will be cut and anastomosed.

[0003] Before the operation, the doctor will make a large incision in the patient's abdomen, and the cutter will enter the abdominal cavity through the incision. After the cutter reaches the position of the intestine, other tools will be used to cooperate with the cutter to push away the fat tissue connected to the intestine. This is because the fat tissue is soft and elastic. If it is not pushed away, it will hinder the cutter from cutting or anastomosing the intestine during the cutting and anastomosis process.

[0004] Since the fat tissue is directly connected to the intestine, the fat tissue can only be pushed to one side of the intestine. After the fat tissue is pushed aside, the intestine is clamped with the two clamp arms on the cutter. At this time, the fat tissue will be squeezed to the edge of the two clamp arms, and the doctor's visual field is on one side of the cutter. At this time, the intestine will be separated from the fat tissue and the doctor's field of view;

[0005] When the cutting knife and staple cartridge assembly in the upper clamp arm move toward the end of the clamp arm and cut and staple the intestine, the distance between the edge of the intestine and the fat tissue cannot be clearly determined because the intestine blocks the view. Therefore, when the doctor operates the moving position of the cutting knife and staple cartridge assembly, it is very easy to accidentally cut the fat tissue or other tissues around the intestine. Although the two clamp arms of the cutter will push other tissues away when clamping the intestine, the tissues accumulated around the intestine will still be close to the clamp arms of the cutter. Therefore, due to the blind spot of the view, it is extremely difficult to determine the stopping position of the cutting knife and staple cartridge assembly.

[0006] The cutter cannot be swung at an angle to bring the end of the clamp arm into the visible range. This is because the size of the incision on the patient's abdomen is very limited and cannot support a large swing of the cutter to adjust the viewing angle of the clamp arm port. In addition, the cutter enters the patient's body from top to bottom, so the viewing angle is downward. If the cutter wants to expose the end of the clamp arm to the field of view after clamping the intestines, the cutter needs to be tilted to one side to a greater extent, which will inevitably press on the incision and increase the risk of tearing the edge of the incision. Summary of the invention

[0007] The object of the present invention is to provide a cutter for colorectal surgery to solve the problems raised in the above-mentioned background technology.

[0008] In order to solve the above technical problems, the present invention provides a colorectal surgical cutter, comprising a colorectal cutter body and a lower clamp arm that can be close to or away from an upper clamp arm, and further comprising:

[0009] The lower clamping arm is provided with a chamber, and an adjusting plate is provided in the chamber along its axial direction, and the adjusting plate is as wide as the chamber, and an outlet is provided at the top of the chamber and is connected to the outside, one end of the adjusting plate is rotatably connected to the chamber, and the other end extends to the outlet;

[0010] The driving part is arranged inside the chamber and includes at least a swingable lifting plate, one end of which is rotatably connected to the inner wall of the chamber, and the other end is abutted against the bottom of the adjustment plate. A gap is left between the end of the lifting plate connected to the chamber and the adjustment plate, so as to push one end of the adjustment plate to protrude out of the outlet of the chamber when the lifting plate swings in the vertical direction.

[0011] Furthermore, it also includes a receiving chamber disposed on the lower clamping arm, the receiving chamber is provided with an outlet and an inlet, the inlet at the bottom of the receiving chamber is communicated with the chamber, and the outlet at the top of the receiving chamber is communicated with the outlet of the chamber;

[0012] A fixing rod is arranged inside the chamber, and both ends of the fixing rod are connected to the inner wall of the chamber;

[0013] The elastic roll is elastic and is wound on the fixed rod. One end of the elastic roll is connected to the outer wall of the fixed rod, and the other end extends into the accommodating cavity through the entrance, and extends out from the exit of the accommodating cavity and is connected to one end of the adjustment plate located at the exit of the cavity.

[0014] Further, the accommodating cavity is provided with a plurality of strip openings, the strip openings are communicated with the accommodating cavity, the inner wall of the strip opening is rotatably connected with a rotating rod, the outer wall of the rotating rod is provided with a pressing roller, and a part of the outer wall of the pressing roller extends into the accommodating cavity through the connection between the strip opening and the accommodating cavity;

[0015] The outlet of the accommodating cavity has a corner, and the plurality of strip openings and the pressure roller are all located at the corner of the outlet of the accommodating cavity, and the outer wall of the pressure roller abuts against the outer wall of the elastic roll.

[0016] Furthermore, the lower clamp arm is provided with two strip grooves, which are respectively located on the inner walls on both sides of the chamber, and the strip grooves are arranged along the axial direction of the lower clamp arm, and the inner wall of the adjustment plate is rotatably connected with a connecting rod, and both ends of the connecting rod pass through the adjustment plate and extend into the inner part of the strip groove, and the connecting rod is slidably connected between the two strip grooves;

[0017] A connecting rope is arranged inside one of the strip-shaped grooves, one end of which is connected to the outer wall of the connecting rod, and the other end of which extends into the main body of the colorectal cutter.

[0018] Furthermore, it also includes a spring, which is arranged inside the strip groove along the axial direction of the strip groove, one end of the spring is connected to the outer wall of the connecting rod, and the other end is connected to the inner wall of the strip groove.

[0019] Furthermore, the lower clamping arm is provided with a sliding cavity, a movable plate is arranged in the sliding cavity, one end of the movable plate extends to the outside of the sliding cavity, and a connecting belt is installed at the end of the movable plate located outside the sliding cavity, and the end of the connecting belt away from the movable plate is connected to the end of the adjustment plate located in the cavity.

[0020] Furthermore, the driving part further comprises a fixed shaft, the lifting plate is connected to the outer wall of the fixed shaft, and one end of the fixed shaft away from the lifting plate is rotatably connected to the inner wall of the chamber;

[0021] The lower clamp arm is also provided with an embedding groove, which is located below one of the strip grooves. The embedding groove is provided with a socket. A pull rope is installed on the side wall of the lifting plate away from the fixed axis. One end of the pull rope away from the fixed axis extends to the interior of the embedding groove through the socket, and extends along the embedding groove to the main body of the colorectal cutter.

[0022] Furthermore, an arc end is provided at the outlet of the accommodating cavity, and the outer wall of the elastic roll abuts against the outer wall of the arc end.

[0023] Compared with the prior art, the present invention has the following beneficial effects:

[0024] 1. In the present invention, the doctor operates the colorectal cutter, controls the opening and closing of the lower clamp arm to clamp the intestine, and the lifting plate rotates to push the adjustment plate upward, thereby lifting the connection between the edge of the intestine and the fat tissue to make it within the visible range. When the clamp arm approaches, one end of the adjustment plate is only lifted to touch the upper clamp arm. The doctor operates from an upward viewing angle, and the tilted adjustment plate can help him determine the position of the cutting knife and the staple cartridge assembly.

[0025] 2. In the present invention, when one end of the adjustment plate is tilted upward, the elastic roll will be pulled out, and the area around the rod will be tightened. The elastic roll will block the gap between the adjustment plate and the cavity after it is tilted up, preventing fat tissue from entering the cavity from the gap. During the lifting process, the elastic roll can block the fat and avoid tearing between the intestine and the fat. When it falls back, it will be restored by its own elasticity, which is convenient for reuse. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0027] Figure 2 Schematic diagram of the appearance of the lower clamping arm in the present invention;

[0028] Figure 3 is a cross-sectional schematic diagram of the lower clamping arm of the present invention;

[0029] Figure 4 It is a schematic diagram of the connection structure between the lifting plate and the fixed shaft in the present invention;

[0030] Figure 5 It is a schematic diagram of the connection structure between the chamber and the fixing rod in the present invention;

[0031] Figure 6 It is a schematic diagram of the connection structure between the lower clamping arm and the accommodating cavity in the present invention;

[0032] Figure 7 It is a schematic diagram of the connection structure between the lower clamping arm and the strip groove in the present invention;

[0033] Figure 8 It is a schematic diagram of the connection structure of the connecting rod and the connecting rope in the present invention;

[0034] Fig. 9 for Figure 3 A magnified view of the structure at center A;

[0035] Fig.10 for Figure 3 A magnified view of the structure at point B.

[0036] In the figure: 1. the main body of the colorectal cutter;

[0037] 2. Lower clamping arm; 3. Adjusting plate; 4. Chamber; 5. Moving plate; 6. Connecting belt; 7. Sliding cavity; 8. Fixed rod; 9. Elastic roll; 10. Accommodating cavity; 11. Lifting plate; 12. Fixed shaft; 13. Pull rope; 14. Rotating rod; 15. Pressing roller; 16. Arc end; 17. Connecting rod; 18. Socket; 19. Strip groove; 20. Spring; 21. Connecting rope; 22. Embedded groove; 23. Strip opening. DETAILED DESCRIPTION

[0038] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0039] The present invention provides a technical solution:

[0040] See also Figure 1-Figure 10 As shown, a colorectal surgical cutter comprises a colorectal cutter body 1 and a lower clamp arm 2 which can be close to or away from an upper clamp arm, and further comprises: a chamber 4 is formed in the lower clamp arm 2, an adjustment plate 3 is arranged along the axial direction of the chamber 4, the adjustment plate 3 is equal in width to the chamber 4, an outlet is formed at the top of the chamber 4 and is connected to the outside, one end of the adjustment plate 3 is rotatably connected to the chamber 4, and the other end extends to the outlet;

[0041] The driving part is arranged inside the chamber 4, and includes at least a swingable lifting plate 11, one end of the lifting plate 11 is rotatably connected to the inner wall of the chamber 4, and the other end is abutted against the bottom of the adjusting plate 3. A distance is left between the end of the lifting plate 11 connected to the chamber 4 and the adjusting plate 3, which is used to push one end of the adjusting plate 3 to protrude out of the outlet of the chamber 4 when the lifting plate 11 swings in the vertical direction.

[0042] The doctor can operate the main body 1 of the colorectal cutter to control the opening and closing of the lower clamp arm 2, so that the lower clamp arm 2 is close to or away from the upper clamp arm on the main body 1 of the colorectal cutter, so that the two clamp arms are opened and close to the intestine, and then the lower clamp arm 2 is moved closer to the upper clamp arm, so that the intestine is clamped. In the case that the main body 1 of the colorectal cutter and the lower clamp arm 2 cannot be swung, the doctor can Figure 4 From the perspective of, when the lower clamp arm 2 clamps the intestine, the top surface of the adjusting plate 3 will touch the intestine, and then the end of the lifting plate 11 connected to the chamber 4 will rotate, and the other end of the lifting plate 11 will swing to the upper left. When the lifting plate 11 swings, it will push the adjusting plate 3 to tilt upward. At the same time, the end of the adjusting plate 3 that is rotatably connected to the chamber 4 will also rotate, and the end of the adjusting plate 3 that is not connected to the chamber 4 and located at the exit of the chamber 4 will swing upward and protrude from the horizontal line of the exit of the chamber 4.

[0043] The tilt state of the adjustment plate 3 can be as follows Figure 3 and Figure 4 From the perspective of the present invention, as one end of the adjusting plate 3 gradually tilts, the adjusting plate 3 will push the edge of the intestine upward. In the prior art, the ends of the two clamping arms of the main body 1 of the colorectal cutter will be on the side of the intestine and the fat tissue. When the intestine blocks the line of sight, the doctor will not be able to see the end of the clamping arm, and thus cannot determine to what position the cutting knife and the staple cartridge assembly move and stop. In the design here, since the intestine is clamped on the adjusting plate 3, when the adjusting plate 3 is lifted upward, if the fat tissue and the intestine are on the same adjusting plate 3, then after the adjusting plate 3 is lifted, the side of the intestine close to the fat tissue will be lifted up so that it is within the doctor's visual range. The specific lifting height can be determined according to the specific situation in the operation.

[0044] However, it should be pointed out that, since the two clamping arms are in a close state, the end of the adjustment plate 3 that is not connected to the chamber 4 will only be lifted to contact the upper clamping arm. When the doctor operates the main body 1 of the colorectal cutter, in order to facilitate viewing of the operation of the main body 1 of the colorectal cutter, the visual angle is generally biased upward. When the clamping arm clamps the intestine, the clamping arm is in a front lower position in the visual angle. When one end of the adjustment plate 3 is tilted, the position of the edge of the intestine and the fat will be raised, making it easier for the doctor to see.

[0045] When the upwardly tilted end of the adjustment plate 3 is exposed in the doctor's field of vision, the intestines on the top surface of the adjustment plate 3 will also be lifted up. In fact, if the fat tissue is squeezed out of the clamping range of the clamp arm by the lifted adjustment plate 3, the doctor can safely control the movement of the cutting knife and the stapler magazine assembly to make them contact the tilted end of the adjustment plate 3. If a part of the tissue is lifted up together with the lifted adjustment plate 3, the distance between the edge of the intestine and the fat tissue can be exposed within the field of vision, which can also facilitate the doctor to determine the moving position of the cutting knife and the stapler magazine assembly.

[0046] See also Figure 3-Figure 6 , further comprising, a receiving chamber 10 disposed on the lower clamping arm 2, the receiving chamber 10 being provided with an outlet and an inlet, the inlet at the bottom of the receiving chamber 10 being communicated with the chamber 4, and the outlet at the top of the receiving chamber 10 being communicated with the outlet of the chamber 4;

[0047] A fixing rod 8 is arranged inside the chamber 4, and both ends of the fixing rod 8 are fixedly connected to the inner wall of the chamber 4;

[0048] The elastic roll 9 is elastic and is wound on the fixed rod 8. One end of the elastic roll 9 is fixedly connected to the outer wall of the fixed rod 8, and the other end extends into the accommodating chamber 10 through the entrance, and extends out from the outlet of the accommodating chamber 10 and is fixedly connected to one end of the adjustment plate 3 located at the outlet of the chamber 4.

[0049] The lower clamp arm 2 is also provided with a receiving cavity 10, which is located in the cavity 4, and the fixing rod 8 is fixedly installed in the cavity 4. The end of the elastic coil 9 away from the fixing rod 8 first enters the cavity 10 from the entrance of the cavity 10, and then extends out from the exit of the cavity 10, and is fixedly connected with the end of the adjustment plate 3 that can be tilted. In this way, when one end of the adjustment plate 3 tilts upward, the elastic coil 9 will be pulled out of the cavity 10, and the area where the elastic coil 9 is wound around the fixing rod 8 will gradually tighten. By pulling the elastic coil 9, fat tissue can be prevented from entering the cavity 4 through the gap between the tilted adjustment plate 3 and the cavity 4;

[0050] Secondly, the elastic roll 9 can also hold the fat tissue during the lifting process to prevent excessive tearing force between the intestines and the fat when the intestines are lifted up alone. The elastic roll 9 can also hold a part of the fat tissue that falls on the elastic roll 9 when the intestines are lifted, specifically the area where the elastic roll 9 is exposed outside. When one end of the adjustment plate 3 drops back to its original position, the elastic roll 9 will use its own elasticity to wrap back around the fixing rod 8, which is conducive to the re-lifting of one end of the adjustment plate 3.

[0051] See also Figure 4-Figure 9The accommodating chamber 10 is provided with a plurality of strip openings 23, the strip openings 23 are in communication with the accommodating chamber 10, the inner wall of the strip opening 23 is rotatably connected with a rotating rod 14, the outer wall of the rotating rod 14 is fixedly mounted with a pressing roller 15, and a part of the outer wall of the pressing roller 15 extends into the accommodating chamber 10 through the connection between the strip opening 23 and the accommodating chamber 10;

[0052] The exit of the accommodating chamber 10 has a corner, and the plurality of strip openings 23 and the pressing roller 15 are both located at the corner of the exit of the accommodating chamber 10 , and the outer wall of the pressing roller 15 abuts against the outer wall of the elastic roll 9 .

[0053] When the adjustment plate 3 is lifted, a part of the elastic roll 9 will gradually move out of the accommodating chamber 10. During this process, the outer wall of the elastic roll 9 will rub against the outer wall of the pressure roller 15. The pressure roller 15 is supported in the strip opening 23 by the rotating rod 14. The strip opening 23 has an outlet, so that part of the outer wall of the pressure roller 15 is exposed in the accommodating chamber 10 through the outlet. In this way, when the elastic roll 9 moves, the outer wall of the elastic roll 9 will rub against the outer wall of the pressure roller 15. The pressure roller 15 will also rotate due to the friction, thereby reducing the friction caused by the elastic roll 9 frequently entering and exiting the accommodating chamber 10.

[0054] The reason why the pressure roller 15 is arranged at the outlet of the accommodating chamber 10 is that the elastic roll 9 is directly connected to the adjustment plate 3 after extending from the outlet of the accommodating chamber 10. When the adjustment plate 3 swings upward or downward, the elastic roll 9 will swing upward or downward at the outlet of the accommodating chamber 10, which will make the elastic roll 9 alternately close to the inner top wall and the inner bottom wall of the outlet of the accommodating chamber 10. The pressure roller 15 is arranged at the outlet of the accommodating chamber 10, which can reduce the friction between the elastic roll 9 and the inner wall of the outlet of the accommodating chamber 10 when the elastic roll 9 is close to the inner top wall and the inner bottom wall of the outlet of the accommodating chamber 10, thereby reducing wear.

[0055] See also Figure 4-Figure 10 The lower clamp arm 2 is also provided with two strip grooves 19, which are respectively located on the inner walls of the chamber 4 on both sides. The strip grooves 19 are arranged along the axial direction of the lower clamp arm 2. The inner wall of the adjustment plate 3 is rotatably connected with a connecting rod 17. Both ends of the connecting rod 17 pass through the adjustment plate 3 and extend to the inside of the strip groove 19. The connecting rod 17 is slidably connected between the two strip grooves 19.

[0056] A connecting rope 21 is disposed inside one of the strip-shaped grooves 19 , one end of the connecting rope 21 is fixedly connected to the outer wall of the connecting rod 17 , and the other end extends into the colorectal cutter body 1 .

[0057] When the adjusting plate 3 swings, the inner wall of one end will rotate along the outer wall of the connecting rod 17. The two ends of the connecting rod 17 are respectively located in the two strip grooves 19, and the connecting rod 17 can move along the two strip grooves 19.

[0058] The doctor controls the opening and closing of the two clamp arms and the movement of the cutting knife and the stapler cartridge assembly by manipulating the colorectal cutter body 1 outside the patient's body, and guides one end of the connecting rope 21 into the colorectal cutter body 1, and then the doctor pulls the connecting rope 21. When the connecting rope 21 is pulled, the connecting rope 21 pulls the connecting rod 17 to move toward the colorectal cutter body 1. Figure 3 and Figure 4 It can be seen that there is a gap between the end of the adjusting plate 3 connected to the chamber 4 and the left edge of the chamber 4, which provides a moving space for the adjusting plate 3. When the connecting rod 17 moves toward the colorectal cutter body 1, it will drive the adjusting plate 3 to move together, so that the adjusting plate 3 moves toward the left edge of the chamber 4.

[0059] The movement of the position of the adjustment plate 3 can adapt to the position of the intestine being clamped. Sometimes, the position of the intestine when the two clamp arms clamp the intestine is different. The intestine may be close to the colorectal cutter body 1, or it may be on the edge of the clamp arm. The length of the clamp arm is generally longer, so that it can be ensured that there is still a part of the area left after the intestine is clamped, and the change in the position of the adjustment plate 3 can ensure that the edge of the intestine close to the fat tissue is lifted, which is convenient for the doctor to check and avoid the edge of the intestine not being exposed due to the incorrect lifting position of the adjustment plate 3.

[0060] See also Figure 5 and Figure 4 , and also includes a spring 20, which is arranged inside the strip groove 19 along the axial direction of the strip groove 19, one end of the spring 20 is fixedly connected to the outer wall of the connecting rod 17, and the other end is fixedly connected to the inner wall of the strip groove 19.

[0061] When the connecting rope 21 is pulled to move the connecting rod 17, when the connecting rod 17 is pulled in a direction away from the spring 20, the spring 20 will be stretched. After slowly loosening the connecting rope 21, the spring 20 can gradually pull the connecting rod 17 back to its original position, that is, pull the adjustment plate 3 to the end closest to the lower clamp arm 2 away from the colorectal cutter body 1.

[0062] See also Figure 2-Figure 10 The lower clamping arm 2 is provided with a sliding cavity 7, in which a movable plate 5 is arranged, one end of the movable plate 5 extends to the outside of the sliding cavity 7, and a connecting belt 6 is fixedly installed on the end of the movable plate 5 located outside the sliding cavity 7, and the end of the connecting belt 6 away from the movable plate 5 is fixedly connected to the end of the adjusting plate 3 located in the chamber 4, and the connecting belt 6 is elastic.

[0063] like Figure 3 and Figure 4When the adjusting plate 3 is closest to the right side of the chamber 4, there is a distance between the left side of the chamber 4 and the adjusting plate 3 for the adjusting plate 3 to move, so it is blocked by the movable plate 5 to prevent the human body tissue from entering the chamber 4 through this gap when the adjusting plate 3 is on the right side of the chamber 4. When the adjusting plate 3 moves to the right, the movable plate 5 will gradually slide out of the sliding cavity 7, and when the adjusting plate 3 moves to the left, the movable plate 5 will gradually slide into the sliding cavity 7. The movable plate 5 and the adjusting plate 3 are connected by a connecting belt 6. This is because the movable plate 5 is made of hard material. When the adjusting plate 3 swings, the connection part between the adjusting plate 3 and the movable plate 5 will change. If the movable plate 5 is directly connected to the adjusting plate 3, the movable plate 5 cannot be deformed, which will affect the swing of the adjusting plate 3. The connecting belt 6 is a variable elastic material. After the adjusting plate 3 swings, the connecting belt 6 itself can be deformed to adapt to the angle change of the connection position with the adjusting plate 3.

[0064] See also Figure 4-Figure 8 The driving part further includes a fixed shaft 12, the lifting plate 11 is fixedly connected to the outer wall of the fixed shaft 12, and one end of the fixed shaft 12 away from the lifting plate 11 is rotatably connected to the inner wall of the chamber 4;

[0065] The lower clamp arm 2 is also provided with an embedding groove 22, which is located below one of the strip grooves 19. The embedding groove 22 is provided with a socket 18. A pull rope 13 is fixedly installed on the side wall of the lifting plate 11 away from the fixed axis 12. One end of the pull rope 13 away from the fixed axis 12 extends to the inside of the embedding groove 22 through the socket 18, and extends along the embedding groove 22 to the colorectal cutter body 1.

[0066] The operation method of the connecting rope 21 is the same as that of the medical staff, who can also pull the pull rope 13 extending to the main body 1 of the colorectal cutter outside the patient, such as Figure 5 In the embodiment, the pull rope 13 moves to the left, and the pull rope 13 will pull the end of the lifting plate 11 that contacts the adjusting plate 3, thereby causing the upper right end of the lifting plate 11 to swing to the upper left. At the same time, the other end of the lifting plate 11 also rotates along the inner wall of the chamber 4 through the fixed shaft 12. After the end of the lifting plate 11 away from the fixed shaft 12 swings to the upper left, the adjusting plate 3 will be gradually lifted up.

[0067] exist Figure 4 It can be seen that when the adjustment plate 3 is at the rightmost side of the chamber 4, the lifting plate 11 is close to the left side of the adjustment plate 3. At this time, the lifting plate 11 can lift the adjustment plate 3 by just tilting it slightly. When the adjustment plate 3 moves to the left, the lifting plate 11 will correspond to the right side of the adjustment plate 3. At this time, the lifting plate 11 needs to be lifted higher to lift the adjustment plate 3.

[0068] See also Figure 4 and Figure 6 An arc end 16 is provided at the exit of the accommodating cavity 10 , and the outer wall of the elastic coil 9 abuts against the outer wall of the arc end 16 .

[0069] As mentioned above, when the adjustment plate 3 swings upward or downward, the elastic roll 9 will swing upward or downward at the exit of the accommodating chamber 10, which will cause the elastic roll 9 to alternately approach the inner top wall and the inner bottom wall of the exit of the accommodating chamber 10. Therefore, an arc end 16 is opened at the exit edge of the accommodating chamber 10, so that when the adjustment plate 3 is tilted upward and the outer wall of the elastic roll 9 is close to the arc end 16, the bending and damage of the elastic roll 9 can be further reduced, because the arc end 16 has a larger area and a smoother surface, so when the outer wall of the elastic roll 9 contacts it, the friction of the elastic roll 9 can be further reduced.

Claims

1. A colorectal surgical cutter, comprising a colorectal cutter body (1) and a lower clamp arm (2) that can be moved closer to or farther from an upper clamp arm, characterized in that: Also includes, The lower clamping arm (2) is provided with a chamber (4), and an adjusting plate (3) is arranged in the chamber (4) along its axial direction. The adjusting plate (3) is as wide as the chamber (4), and an outlet is provided at the top of the chamber (4) and is connected to the outside. One end of the adjusting plate (3) is rotatably connected to the chamber (4), and the other end extends to the outlet. The driving part is arranged inside the chamber (4), and comprises at least a swingable lifting plate (11), one end of which is rotatably connected to the inner wall of the chamber (4), and the other end of which is abutted against the bottom of the adjustment plate (3). A spacing is left between the end of the lifting plate (11) connected to the chamber (4) and the adjustment plate (3), so as to push one end of the adjustment plate (3) to protrude out of the outlet of the chamber (4) when the lifting plate (11) swings in the vertical direction.

2. A colorectal surgery cutter according to claim 1, characterized in that: It also includes a receiving chamber (10) disposed on the lower clamping arm (2), the receiving chamber (10) being provided with an outlet and an inlet, the inlet at the bottom of the receiving chamber (10) being connected to the chamber (4), and the outlet at the top of the receiving chamber (10) being connected to the outlet of the chamber (4); A fixing rod (8) is arranged inside the chamber (4), and both ends of the fixing rod (8) are connected to the inner wall of the chamber (4); The elastic roll (9) is elastic and is wound around the fixing rod (8). One end of the elastic roll (9) is connected to the outer wall of the fixing rod (8), and the other end extends into the accommodating chamber (10) through the entrance, and extends out from the exit of the accommodating chamber (10) and is connected to one end of the adjusting plate (3) located at the exit of the chamber (4).

3. A colorectal surgery cutter as claimed in claim 2, characterized in that: The accommodating chamber (10) is provided with a plurality of strip-shaped openings (23), the strip-shaped openings (23) are in communication with the interior of the accommodating chamber (10), the inner wall of the strip-shaped opening (23) is rotatably connected to a rotating rod (14), the outer wall of the rotating rod (14) is provided with a pressing roller (15), and a partial area of ​​the outer wall of the pressing roller (15) extends into the accommodating chamber (10) through the connection between the strip-shaped opening (23) and the accommodating chamber (10); The outlet of the accommodating chamber (10) has a corner, and the plurality of strip-shaped openings (23) and the pressure roller (15) are located at the corner of the outlet of the accommodating chamber (10), and the outer wall of the pressure roller (15) abuts against the outer wall of the elastic roll (9).

4. A colorectal surgery cutter as claimed in claim 3, characterized in that: The lower clamping arm (2) is also provided with two strip grooves (19), which are respectively located on the inner walls on both sides of the chamber (4), and the strip grooves (19) are arranged along the axial direction of the lower clamping arm (2). The inner wall of the adjustment plate (3) is rotatably connected with a connecting rod (17), and both ends of the connecting rod (17) pass through the adjustment plate (3) and extend into the inside of the strip grooves (19), and the connecting rod (17) is slidably connected between the two strip grooves (19); A connecting rope (21) is disposed inside one of the strip-shaped grooves (19), one end of the connecting rope (21) is connected to the outer wall of the connecting rod (17), and the other end extends into the colorectal cutter body (1).

5. A colorectal surgery cutter as claimed in claim 4, characterized in that: It also includes a spring (20), which is arranged inside the strip groove (19) along the axial direction of the strip groove (19), one end of the spring (20) is connected to the outer wall of the connecting rod (17), and the other end is connected to the inner wall of the strip groove (19).

6. A colorectal surgery cutter as claimed in claim 5, characterized in that: The lower clamping arm (2) is provided with a sliding cavity (7), a movable plate (5) is arranged in the sliding cavity (7), one end of the movable plate (5) extends to the outside of the sliding cavity (7), and a connecting belt (6) is installed at the end of the movable plate (5) located outside the sliding cavity (7), and the end of the connecting belt (6) away from the movable plate (5) is connected to the end of the adjusting plate (3) located in the chamber (4).

7. A colorectal surgery cutter as claimed in claim 6, characterized in that: The driving part further comprises a fixed shaft (12), the lifting plate (11) is connected to the outer wall of the fixed shaft (12), and one end of the fixed shaft (12) away from the lifting plate (11) is rotatably connected to the inner wall of the chamber (4); The lower clamp arm (2) is also provided with an embedding groove (22), and the embedding groove (22) is located below one of the strip grooves (19). The embedding groove (22) is provided with a socket (18). A pull rope (13) is installed on the side wall of the lifting plate (11) away from the fixed axis (12). One end of the pull rope (13) away from the fixed axis (12) extends to the inside of the embedding groove (22) through the socket (18), and extends along the embedding groove (22) to the inside of the colorectal cutter body (1).

8. A colorectal surgery cutter as claimed in claim 7, characterized in that: An arc end (16) is provided at the exit of the accommodating cavity (10), and the outer wall of the elastic roll (9) abuts against the outer wall of the arc end (16).

Images