Anorectal anastomat with function of selectively excising mucosal tissues on hemorrhoids

Abstract

The invention relates to the technical field of surgical instruments, in particular to an anorectal anastomat with a function of selectively excising mucosal tissues on hemorrhoids, which comprises a handle and a hard tube, the hard tube is fixedly mounted at the front end of the handle, and an air tube joint connected with a negative pressure vacuum pump is arranged at the rear end of the handle. The air pipe connector is connected with the hard pipe through a connecting pipe penetrating through the interior of the handle, and an air channel opening and closing button for controlling opening and closing of a valve on the connecting pipe is arranged on the right side wall of the handle. A knotting rope ring is arranged at the position of a pipe opening of the hard pipe, the two ends of the knotting rope ring are connected to the pipe opening of the hard pipe and the kneading handle respectively, and the kneading handle is rotationally connected to the handle. A pipe head is rotationally connected to a pipe opening of the hard pipe through a steering mechanism, the steering mechanism is sleeved with a corrugated hose, the two ends of the corrugated hose are in sealed connection with the pipe head and the hard pipe respectively, and a control button of the steering mechanism is arranged on the left side wall of the handle. Through steering positioning, negative pressure adsorption and selective ligation anastomosis mechanisms, the anorectal minimally invasive surgery is safer, more accurate and more economical.

Description

Technical Field

[0001] The present invention relates to the technical field of surgical instruments, in particular to an anorectal stapler with the function of selectively removing hemorrhoidal mucosal tissue. Background Art

[0002] A tubular anorectal stapler is a disposable surgical instrument suitable for anorectal anastomosis. Its principle is to preserve the anal cushions while circumferentially resecting and anastomosing a portion of the internal hemorrhoids and the mucosal and submucosal tissue above the hemorrhoids. This instantaneous anastomosis not only blocks the hemorrhoidal blood supply but also suspends and fixes the slipped tissue, restoring the pathological anorectal canal to its normal state. Current tubular anorectal staplers generally use a complete circumferential suture method to divide or anastomose anorectal tissue. When selective resection of tissue above the dentate line is required, appropriate accessories are required for local resection. This procedure is complex and expensive, increasing the patient's financial burden. Furthermore, when using a complete circumferential suture method to selectively resect the mucosal lining above the dentate line, excess unused staples can easily fall into the body, causing increased pain and surgical risk.

[0003] The Chinese patent application with patent application number 202010795320.6 discloses an anorectal stapler with the function of selectively removing anorectal tissue. The application selectively fires the left, right or bilateral pusher pieces through the clutch structure on the handle. The unselected pusher pieces remain in an airtight state, and their staples will not be pushed out. When only part of the dentate line mucosa needs to be removed (such as local hemorrhoids), the doctor can only fire the pusher piece on the lesion side to retain healthy tissue and avoid unnecessary annular cutting. Although this application has expanded the scope of application of the anorectal stapler, the optional surgical procedures are still limited to full circumferential resection and semicircumferential resection. It is difficult to achieve accurate targeted resection of scattered multiple lesions; in addition, this application has the risk of crushing the unresected half of healthy tissue.

[0004] Therefore, there is an urgent need for a new anorectal stapler with the function of selectively removing the mucosal tissue above the hemorrhoids to provide an effective solution to the defects of the existing technology. Summary of the Invention

[0005] The purpose of the present invention is to provide an anorectal stapler with the function of selectively removing the mucosal tissue above the hemorrhoids, so as to solve the problems raised in the above-mentioned background technology.

[0006] To achieve the above object, the present invention provides the following technical solutions:

[0007] An anorectal stapler with the function of selectively removing mucosal tissue above hemorrhoids is characterized in that it includes a handle and a hard tube, the hard tube is fixedly mounted on the front end of the handle, and the rear end of the handle is provided with an trachea joint for connecting to a negative pressure vacuum pump, the trachea joint is connected to the hard tube through a connecting tube passed through the inside of the handle, and an air circuit opening and closing button for controlling the opening and closing of the valve on the connecting tube is provided on the right side wall of the handle; a knotted rope ring is provided at the pipe mouth of the hard tube, and the two ends of the knotted rope ring are respectively connected to the pipe mouth of the hard tube and a kneading handle, and the kneading handle is rotatably connected to the handle; a pipe head is rotatably connected to the pipe mouth of the hard tube through a steering mechanism, and a corrugated hose is provided on the outer sleeve of the steering mechanism, and the two ends of the corrugated hose are respectively sealed with the pipe head and the hard tube, the control button of the steering mechanism is arranged on the left side wall of the handle, and a protruding steering indicator line is provided on the top of the handle.

[0008] Furthermore, the steering mechanism includes a rotating T-frame provided on the pipe head and a fixed T-frame provided at the pipe mouth of the hard pipe. The rotating T-frame is rotatably connected to the fixed T-frame. A side bracket is provided on each side of the rotating T-frame. The upper side bracket is connected to an upper deflection pull rope, and the lower side bracket is connected to a lower deflection pull rope. An upper deflection drive motor and a lower deflection drive motor are installed in the handle. The ends of the upper deflection pull rope and the lower deflection pull rope away from the pipe mouth are respectively wound around the rotating shafts of the upper deflection drive motor and the lower deflection drive motor. An upper deflection button and a lower deflection button for respectively controlling the deflection and lower deflection on the pipe head are provided on the left side wall of the handle.

[0009] Furthermore, a Y-shaped rope groove is provided in the fixed T frame, and an outer guide rod and an inner guide roller are respectively installed on the two side openings of the rope groove, and the ends of the side brackets on both sides are rotatably connected to the rope seat rollers, and the ends of the upper deflection pull rope and the lower deflection pull rope away from the handle are respectively connected to the rope seat rollers in the upper and lower side brackets; the upper deflection pull rope and the lower deflection pull rope pass through between the outer guide rods and the inner guide rollers on the upper and lower sides respectively, and then pass into the rope groove together.

[0010] Furthermore, guide rope rings are provided on the outer walls of the kneading handle, the hard tube and the tube head, and the rope body of the knotted rope ring passes through all the guide rope rings in sequence.

[0011] Furthermore, the end of the rope body passes through the rope guide ring on the kneading handle and is connected with a drawstring.

[0012] Furthermore, a smooth conical surface is provided on the circumferential outer wall of the tube head, the diameter of the conical surface gradually narrows toward the tube head end, and the knotted rope ring is set on the conical surface.

[0013] Furthermore, an outwardly protruding knot limiting ring is provided at the large end of the conical surface.

[0014] Furthermore, the rope body is made of a rope material with weak elasticity, and the surface has a certain degree of roughness.

[0015] Furthermore, the nozzle of the nozzle head is a detachable structure for replacing nozzles of different calibers.

[0016] Compared with the prior art, the present invention has the following beneficial effects:

[0017] 1. In the present invention, the doctor can determine the plane of the tube head through the steering indicator line on the top of the handle, and adjust the direction of the tube head by controlling the steering mechanism through the handle, so that the tube head and the tube mouth are accurately aligned with the lesion area. Press the airway opening and closing button, and the negative pressure is transmitted to the hard tube and the tube head through the tracheal joint and the connecting tube, sucking the target mucosal tissue into the inside of the tube head to prevent healthy tissue from being accidentally sucked in. After the lesion is completely sucked into the tube head, pinch the handle and pull the rope body, so that the knotted rope ring slides along the conical surface and tightens and then detaches from the tube head. The knotted rope ring fastens the root of the lesion tissue, and then the lesion tissue is removed and removed by instruments such as separating forceps close to the knotted rope ring. The present invention overcomes the shortcomings of the existing technology of single resection mode, damage to healthy tissue and complicated operation through steering positioning, negative pressure adsorption and selective ligation and anastomosis mechanism, making anorectal minimally invasive surgery safer, more accurate and economical.

[0018] 2. This invention uses a motor-driven design coupled with a pull cord to precisely adjust the tube head's deflection angle in real time, adapting to the desired location for lesion removal. One-touch adjustment is achieved via the upper and lower deflection buttons, eliminating the need for manual tube rotation. This reduces surgical difficulty, improves efficiency, and reduces physician fatigue. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a left view of an anorectal stapler with the function of selectively removing the mucosal tissue above the hemorrhoids;

[0020] Figure 2 This is a right view of an anorectal stapler with the function of selectively removing the mucosal tissue above the hemorrhoids;

[0021] Figure 3 This is a schematic diagram of the local structure of the handle where the handle is pinched;

[0022] Figure 4 It is a structural diagram of a hard pipe, a corrugated hose and a pipe head;

[0023] Figure 5 It is a schematic diagram of the structure of the rope body, knotted rope ring and guide rope ring;

[0024] Figure 6 It is an enlarged schematic diagram of the structure of the tube head;

[0025] Figure 7 is a structural diagram of the steering mechanism;

[0026] Figure 8 It is a cross-sectional view of the internal structure of the steering mechanism.

[0027] In the figure: 1. Hard tube; 2. Corrugated hose; 3. Tube head; 4. Handle; 5. Pinch handle; 6. Turn indicator line; 7. Upper deflection button; 8. Lower deflection button; 9. Air circuit opening and closing button; 10. Pull buckle; 11. Rope body; 12. Knotted rope ring; 13. Rope guide ring; 14. Conical surface; 15. Knot limit ring; 16. Rotating T-frame; 17. Fixed T-frame; 18. Side bracket; 19. Lower deflection pull rope; 20. Upper deflection pull rope; 21. Rope seat roller; 22. Inner guide roller; 23. Outer guide stick; 24. Rope groove; 25. Air pipe joint. DETAILED DESCRIPTION

[0028] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. 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 making creative efforts are within the scope of protection of the present invention.

[0029] Example 1: Please refer to Figures 1 to 6 , an anorectal stapler with the function of selectively removing mucosal tissue on hemorrhoids, characterized in that it comprises a handle 4 and a hard tube 1, the hard tube 1 is fixedly mounted on the front end of the handle 4, and the rear end of the handle 4 is provided with an trachea connector 25 for connecting to a negative pressure vacuum pump, the trachea connector 25 is connected to the hard tube 1 through a connecting tube arranged inside the handle 4, and an air circuit opening and closing button 9 for controlling the opening and closing of the valve on the connecting tube is provided on the right side wall of the handle 4; a knotted rope ring 12 is provided at the pipe mouth of the hard tube 1, and the two ends of the knotted rope ring 12 are respectively connected to the pipe mouth of the hard tube 1 and the kneading handle 5, and the kneading handle 5 is rotatably connected to the handle 4; a pipe head 3 is rotatably connected to the pipe mouth of the hard tube 1 through a steering mechanism, and a corrugated hose 2 is provided on the outer sleeve of the steering mechanism, and the two ends of the corrugated hose 2 are respectively sealed with the pipe head 3 and the hard tube 1, the control button of the steering mechanism is arranged on the left side wall of the handle 4, and a protruding steering indicator line 6 is provided on the top of the handle 4.

[0030] The end of the rope body 11 passes through the rope guide ring 13 on the kneading handle 5 and is connected to the drawstring 10.

[0031] A smooth conical surface 14 is provided on the circumferential outer wall of the head of the pipe head 3 . The diameter of the conical surface 14 gradually narrows toward the end of the pipe head 3 . The knotted rope ring 12 is sleeved on the conical surface 14 .

[0032] An outwardly protruding knot limiting ring 15 is provided at the large end of the conical surface 14 .

[0033] The rope body 11 is made of a rope material with weak elasticity, and its surface has a certain degree of roughness.

[0034] The nozzle of the nozzle head 3 is a detachable structure for replacing nozzles of different diameters.

[0035] Rope guide rings 13 are provided on the outer walls of the kneading handle 5 , the hard tube 1 and the tube head 3 , and the rope body 11 of the knotted rope ring 12 passes through all the rope guide rings 13 in sequence.

[0036] Working principle of this embodiment:

[0037] like Figure 1 and Figure 2 As shown, during surgery, the surgeon can determine the plane of the tube head 3 using the steering indicator line 6 on the top of the handle 4. The surgeon then uses the handle to control the steering mechanism to adjust the orientation of the tube head 3, precisely aligning the orifice of the tube head 3 with the lesion. By pressing the airway opening and closing button 9, negative pressure is transmitted through the tracheal connector 25 and the connecting tube to the rigid tube 1 and tube head 3, drawing the target mucosal tissue into the tube head 3 and preventing accidental aspiration of healthy tissue. In this embodiment, the orifice of the tube head 3 can be configured as a detachable structure, allowing for convenient replacement of the orifice with a corresponding caliber according to the size of the lesion.

[0038] like Figure 3 、 Figure 4 、 Figure 5 and Figure 6 As shown, after the lesion is completely sucked into the tube head 3, the handle 5 is pinched to pull the rope body 11, so that the knotted rope ring 12 slides along the conical surface 14 and is tightened and then detached from the tube head 3. The knotted rope ring 12 fastens the root of the lesion tissue, and then the lesion tissue is removed and removed by using instruments such as separating forceps close to the knotted rope ring 12. The knot limiting ring 15 limits the knotted rope ring 12 to ensure that it is sleeved on the conical surface 14. The guide rope ring 13 guides the rope body 11. The elasticity and roughness of the rope body 11 can ensure that the ligation is firm. In this embodiment, only the ligation area is targeted for resection and anastomosis to avoid damage to healthy tissue by overall circumcision or semi-circumcision, and the un-resected healthy tissue is not subjected to mechanical compression.

[0039] This embodiment overcomes the drawbacks of the prior art such as single resection mode, damage to healthy tissue and complicated operation through steering positioning, negative pressure adsorption and selective ligation and anastomosis mechanism, making anorectal minimally invasive surgery safer, more precise and economical.

[0040] Example 2: Please refer to Figures 7-8, an anorectal stapler with the function of selectively removing mucosal tissue above hemorrhoids, the difference from Example 1 is that the steering mechanism includes a rotating T-frame 16 provided on the tube head 3 and a fixed T-frame 17 provided at the tube mouth of the hard tube 1, the rotating T-frame 16 is rotatably connected to the fixed T-frame 17, and a side bracket 18 is provided on each side of the rotating T-frame 16, the upper side bracket 18 is connected to the upper deflection pull rope 20, and the lower side bracket 18 is connected to the lower deflection pull rope 19, an upper deflection drive motor and a lower deflection drive motor are installed in the handle 4, and the ends of the upper deflection pull rope 20 and the lower deflection pull rope 19 away from the tube mouth of the hard tube 1 are respectively wound around the rotating shafts of the upper deflection drive motor and the lower deflection drive motor, and an upper deflection button 7 and a lower deflection button 8 for controlling the upper deflection and lower deflection of the tube head 3 respectively are provided on the left side wall of the handle 4.

[0041] A Y-shaped rope groove 24 is provided in the fixed T frame 17, and an outer guide rod 23 and an inner guide roller 22 are respectively installed on the two side openings of the rope groove 24. The ends of the side brackets 18 on both sides are rotatably connected to the rope seat rollers 21, and the ends of the upper deflection pull rope 20 and the lower deflection pull rope 19 away from the handle 4 are respectively connected to the rope seat rollers 21 in the upper and lower side brackets 18; the upper deflection pull rope 20 and the lower deflection pull rope 19 pass through between the outer guide rods 23 and the inner guide rollers 22 on the upper and lower sides, and then penetrate into the rope groove 24 together.

[0042] Working principle of this embodiment:

[0043] like Figure 7 and Figure 8 As shown, this embodiment, based on Example 1, utilizes a motor-driven + rope-controlled approach to achieve precise positioning of the tube head 3. Pressing the upper deflection button 7 activates the upper deflection drive motor within the handle 4, tightening the upper deflection rope 20, pulling the upper side bracket 18 of the rotating T-frame 16, and deflecting the tube head 3 upward. Pressing the lower deflection button 8 causes the lower deflection drive motor to tighten the lower deflection rope 19, pulling the lower side bracket 18, and deflecting the tube head 3 downward.

[0044] like Figure 8 As shown, the upper deflection rope 20 and the lower deflection rope 19 are respectively passed around the outer guide roller 23 and the inner guide roller 22 Figure 8 The rope groove 24 is a Y-shaped structure, which keeps the two ropes separated before entering the rigid tube 1, reducing friction interference. The rope seat roller 21 can rotate freely, reducing rope wear and extending service life.

[0045] This embodiment uses a motor drive with a pull rope to adjust the deflection angle of the tube head 3 in real time and accurately, which can adapt to the location of the lesion removal. Figure 7 One-touch adjustment is achieved without manual rotation of the rigid tube 1, which reduces the difficulty of surgical operation, improves efficiency, and reduces doctor fatigue.

Claims

1. An anorectal stapler with the function of selectively removing hemorrhoidal mucosal tissue, characterized in that: It includes a handle (4) and a hard tube (1): The hard tube (1) is fixedly mounted on the front end of the handle (4); a tracheal connector (25) for connecting to a negative pressure vacuum pump is provided at the rear end of the handle (4); the tracheal connector (25) is connected to the hard tube (1) via a connecting tube passing through the interior of the handle (4); and a gas circuit opening and closing button (9) for controlling the opening and closing of a valve on the connecting tube is provided on the right side wall of the handle (4); The mouth of the hard tube (1) is provided with a knotted rope ring (12), the two ends of which are respectively connected to the mouth of the hard tube (1) and the kneading handle (5), and the kneading handle (5) is rotatably connected to the handle (4); The pipe mouth of the hard pipe (1) is rotatably connected to a pipe head (3) through a steering mechanism. A corrugated hose (2) is provided on the outer cover of the steering mechanism. The two ends of the corrugated hose (2) are respectively sealedly connected to the pipe head (3) and the hard pipe (1). A control button of the steering mechanism is provided on the left side wall of the handle (4). A protruding steering indicator line (6) is provided on the top of the handle (4).

2. The anorectal stapler with the function of selectively removing hemorrhoidal mucosal tissue according to claim 1, characterized in that: The steering mechanism comprises a rotating T-frame (16) provided on the pipe head (3) and a fixed T-frame (17) provided at the pipe mouth of the hard pipe (1). The rotating T-frame (16) is rotatably connected to the fixed T-frame (17). A side bracket (18) is provided on each side of the rotating T-frame (16). An upper deflection pull rope (20) is connected to the upper side bracket (18), and a lower deflection pull rope (19) is connected to the lower side bracket (18). An upper deflection drive motor and a lower deflection drive motor are installed in the handle (4). One end of the upper deflection pull rope (20) and the lower deflection pull rope (19) away from the pipe mouth of the hard pipe (1) are respectively wound around the rotating shafts of the upper deflection drive motor and the lower deflection drive motor. An upper deflection button (7) and a lower deflection button (8) for respectively controlling the upper deflection and lower deflection of the pipe head (3) are provided on the left side wall of the handle (4).

3. The anorectal stapler with the function of selectively removing hemorrhoidal mucosal tissue according to claim 2, characterized in that: A Y-shaped rope groove (24) is provided in the fixed T frame (17), and an outer guide rod (23) and an inner guide roller (22) are respectively installed at the two side openings of the rope groove (24). The ends of the side brackets (18) on both sides are rotatably connected to the rope seat rollers (21). The ends of the upper deflection pull rope (20) and the lower deflection pull rope (19) away from the handle (4) are respectively connected to the rope seat rollers (21) in the upper and lower side brackets (18); the upper deflection pull rope (20) and the lower deflection pull rope (19) pass through between the outer guide rods (23) and the inner guide rollers (22) on the upper and lower sides, and then pass through the rope groove (24) together.

4. The anorectal stapler with the function of selectively removing hemorrhoidal mucosal tissue according to claim 1, characterized in that: The outer walls of the kneading handle (5), the hard tube (1) and the tube head (3) are all provided with guide rope rings (13), and the rope body (11) of the knotted rope ring (12) passes through all the guide rope rings (13) in sequence.

5. The anorectal stapler with the function of selectively removing hemorrhoidal mucosal tissue according to claim 4, characterized in that: The end of the rope body (11) passes through the rope guide ring (13) on the kneading handle (5) and is connected to the drawstring (10).

6. The anorectal stapler with the function of selectively removing hemorrhoidal mucosal tissue according to claim 1, characterized in that: A smooth conical surface (14) is provided on the circumferential outer wall of the head of the pipe head (3). The diameter of the conical surface (14) gradually narrows toward the end of the pipe head (3). The knotted rope ring (12) is sleeved on the conical surface (14).

7. The anorectal stapler with the function of selectively removing hemorrhoidal mucosal tissue according to claim 6, characterized in that: An outwardly protruding knot limiting ring (15) is provided at the large end of the conical surface (14).

8. The anorectal stapler capable of selectively removing hemorrhoidal mucosal tissue according to claim 1, characterized in that: The rope body (11) is made of a rope material with weak elasticity, and the surface has a certain degree of roughness.

9. The anorectal stapler with the function of selectively removing hemorrhoidal mucosal tissue according to claim 1, characterized in that: The pipe mouth of the pipe head (3) is a detachable structure, which is used to replace pipe mouths of different calibers.

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