A near right angle cutting purse string instrument

Abstract

This invention discloses a near-right-angle cutting purse-string device, comprising an upper clamp, a lower clamp, a cutting component, a closing component, and a purse-string component. The upper and lower clamps are hinged together to form a clamp body for gripping the digestive tract. The clamp body has a set bending angle, ranging from 80 to 135 degrees. The cutting component is located within the upper and lower clamps for cutting the digestive tract. The cutting component is situated between the closing component and the purse-string component. The closing component is located on one side of the upper and lower clamps for closing one end of the digestive tract. The purse-string component is located on the other side of the upper and lower clamps for purse-string suturing the other end of the digestive tract. This invention can meet the needs of digestive tract surgery in deep, narrow spaces, enabling simultaneous cutting and severing of the digestive tract, closure of one end of the digestive tract, and purse-string suturing of the other end in a single operation.

Description

Technical Field

[0001] This utility model relates to the field of medical devices, and in particular to a near-right-angle cutting purse-string device. Background Technology

[0002] In the field of laparoscopic surgery, especially in laparoscopic digestive disease surgery, the cutting and purse-string suture of the digestive tract are common and crucial procedures. In traditional open surgery, the surgeon can directly place a purse-string forceps on the digestive tract, introduce a purse-string suture through a purse-string staple to create a purse, then cut the digestive tract on one side of the forceps, and place a circular anvil of a stapler in the stump on the side where the purse-string suture has been completed for subsequent anastomosis.

[0003] However, in laparoscopic surgery, the surgical space is extremely limited because instruments must be inserted into the abdominal cavity through a trocar, making purse-string suture difficult and time-consuming. Currently, there are commercially available laparoscopic linear cutting purse-string suture makers that can enter the abdominal cavity through a specially designed 15mm trocar. While they can complete the cutting and severing of the digestive tract, closure of one end of the severance, and placement and fabrication of the purse-string suture on the other end, these existing instruments typically connect the firing mechanism and the end effector via a swing hinge to adjust the angle of the end effector. However, due to design limitations, the swing hinge can only adjust the angle between the long axis of the operating mechanism and the end effector within a limited range, typically between -45° and 45°, making it difficult to achieve near-right angles or angles exceeding right angles. This structural design has significant shortcomings when dealing with deep digestive tracts. When the surgical site is deep, the operating space is narrow, and the field of vision is unclear, such as when the tumor involves a high position in the esophagus, the existing instrument design makes it difficult or impossible to reach the surgical site for precise operation.

[0004] Furthermore, the existing laparoscopic linear cutting purse-string device has insufficient angle adjustment range, making it difficult to adapt to the operational needs of complex anatomical structures. Especially when operating in deep and narrow spaces, the instrument cannot be effectively positioned, increasing the difficulty of the surgery, resulting in poor surgical outcomes, or even making the surgery impossible. At the same time, the existing instrument design is not ergonomic enough to meet the surgeon's needs for instrument flexibility and accessibility in specific surgical environments.

[0005] Therefore, there is an urgent need to propose a near-right-angle cutting purse-stringer to solve the above problems. Utility Model Content

[0006] The purpose of this invention is to propose a near-right-angle cutting purse-string device that can meet the needs of surgical operations in deep and narrow spaces of the digestive tract, and can simultaneously complete the cutting and severing of the digestive tract, the closure of one end of the digestive tract, and the purse-string suture of the other end of the digestive tract in one operation.

[0007] To solve the above-mentioned technical problems, this utility model provides a near right-angle cutting purse-stringer, including an upper clamp, a lower clamp, a cutting component, a closing component, and a purse-stringer component;

[0008] The upper clamp and the lower clamp are hinged together to form a clamp body for clamping the digestive tract; the clamp body is at a set bending angle, which is in the range of 80-135 degrees.

[0009] The cutting component is disposed within the upper and lower jaws and is used to cut the digestive tract; the cutting component is located between the closure component and the purse-string component.

[0010] The closure assembly is disposed on one side of the upper clamp and the lower clamp, and is used to close the broken end on one side of the digestive tract;

[0011] The purse assembly is located on the other side of the upper clamp and the lower clamp, and is used to perform purse suturing on the other end of the digestive tract.

[0012] Furthermore, the upper clamp includes a first transition section and a first segment; one end of the first transition section is hinged to the lower clamp; the first segment is connected to the other end of the first transition section and can form the predetermined bending angle with the first transition section; the predetermined included angle is in the range of 80-135 degrees; a first cutting groove is provided in the middle of the first segment; the closing component and the purse component are located on both sides of the first cutting groove; a portion of the closing component and the purse component is disposed on the first segment.

[0013] Furthermore, the lower clamp includes a second transition section and a second segment; one end of the second transition section is hinged to one end of the first transition section; the second segment is connected to the other end of the second transition section, and can form the set bending angle with the second transition section; a second cutting groove is provided in the middle of the second segment corresponding to the first cutting groove, and the cutting component is disposed in the first cutting groove or the second cutting groove; the other part of the closing component and the purse component are respectively disposed on the second segment.

[0014] Furthermore, when the upper clamp and the lower clamp are closed, the first cutting groove and the second cutting groove are aligned to form a through cutting channel. The cutting assembly can extend from the set position through the cutting channel to another cutting groove to cut the digestive tract clamped between the upper clamp and the lower clamp.

[0015] Furthermore, the closure assembly includes a closure pin pusher block, a closure pin pusher block, a closure pin, and a closure pin abutment; the lower clamp is provided with a closure pin pusher groove, and the closure pin pusher groove is provided with a closure pin outlet hole;

[0016] The closing pin pusher block is slidably disposed in the closing pin pusher groove in the horizontal direction; the closing pin pusher block is slidably disposed in the closing pin pusher groove in the vertical direction; one end of the closing pin is mounted on the closing pin pusher block, and the other end can pass through the closing pin outlet hole; the closing pin abutment is disposed on the upper clamp and corresponds one-to-one with the position of the closing pin;

[0017] The closing pin pusher block can move horizontally along the closing pin pusher groove to drive the closing pin pusher block to move vertically, thereby pushing the closing pin out of the closing pin outlet hole, passing through the broken end on one side of the digestive duct, and pressing it against the corresponding closing pin abutment.

[0018] Furthermore, the contact surface between the closing pin pusher block and the closing pin pusher block is an inclined surface, which converts the horizontal movement of the closing pin pusher block into the vertical movement of the closing pin pusher block.

[0019] Furthermore, the closure pin is made of deformable metal material and has a straight body and a tip; when the closure pin passes through the broken end on one side of the digestive tract and comes into contact with the closure pin abutment, the tip deforms against the closure pin abutment, causing the closure pin to bend into a predetermined shape, thereby closing the broken end on one side of the digestive tract.

[0020] Furthermore, the purse assembly includes a purse pin pusher block, a purse pin pusher block, a purse pin, a purse pin abutment, and a purse thread; both the upper clamp and the lower clamp are provided with purse pin pusher grooves, and the purse pin pusher grooves are provided with purse pin outlet holes;

[0021] The purse-string tack pusher block is slidably disposed in the purse-string tack pusher groove in the horizontal direction; the purse-string tack pusher block is slidably disposed in the purse-string tack pusher groove in the vertical direction; the purse-string tack pusher block can move in the horizontal direction of the purse-string tack pusher groove to drive the purse-string tack pusher block to move in the vertical direction; the purse-string tack abutment is fixedly disposed on the purse-string tack pusher groove.

[0022] The purse-string rivet pusher in the upper clamp is opposite to the purse-string rivet abutment in the lower clamp, and the purse-string rivet pusher in the lower clamp is opposite to the purse-string rivet abutment in the upper clamp; a purse-string rivet pusher is provided between adjacent purse-string rivet abutments, and a purse-string rivet abutment is provided between adjacent purse-string rivet pushers; the purse-string assembly structure of the upper clamp and the purse-string assembly structure of the lower clamp are symmetrically arranged, and the purse-string rivet outlet holes of the upper clamp and the purse-string rivet outlet holes of the lower clamp are staggered.

[0023] The purse-string tack is mounted vertically on the purse-string tack pusher block and extends to the corresponding purse-string tack abutment under the drive of the purse-string tack pusher block, and can pass through the purse-string tack exit hole to pierce the other end of the digestive tract; the purse-string suture is threaded on the purse-string tack and is used to form a suture structure on the other end of the digestive tract.

[0024] Furthermore, the purse nail pusher block has an inclined surface, and the contact surface between the purse nail pusher block and the purse nail pusher block is an arc surface, so that the horizontal movement of the purse nail pusher block is converted into the vertical movement of the purse nail pusher block.

[0025] Furthermore, it also includes a transmission mechanism; the transmission mechanism connects the upper clamp and the lower clamp, and is used to simultaneously drive the cutting assembly to cut the digestive tract, drive the closing assembly to close one end of the digestive tract, and drive the purse-string assembly to perform purse-string suture on the other end of the digestive tract.

[0026] Through the above technical solution, this utility model has the following beneficial effects:

[0027] By integrating the upper clamp, lower clamp, cutting assembly, closure assembly, and purse-string assembly into a single unit, this near-right-angle cutting purse-string device can complete the cutting of the digestive tract, closure of one end of the suture, and purse-string suturing of the other end of the suture in a single operation, effectively simplifying the procedures in laparoscopic surgery. The layout of the cutting assembly, located between the closure assembly and the purse-string assembly, ensures that the two ends of the digestive tract can be treated promptly after cutting, preventing intraoperative contamination and bleeding, and improving surgical safety and efficiency.

[0028] Furthermore, by forming the clamp body with upper and lower clamps, and with the clamp body designed at a predetermined angle of 80-135 degrees, this device solves the problem of insufficient angle adjustment range in existing articulated structures, enabling the instrument to adapt to the surgical needs of deep anatomical structures and narrow spaces. The deformable metal closure staples used in the closure assembly can deform upon contact with the staple anvil after passing through the tissue, forming an ideal closure effect. The staggered arrangement of the purse-string staple pusher and the purse-string staple anvil in the purse-string assembly, along with the coordinated driving function of the transmission mechanism, ensures accurate insertion of the purse-string staples and synchronous suturing, greatly reducing the difficulty and risk of surgery. Attached Figure Description

[0029] Figure 1 This is a schematic diagram of the overall structure of the near-right-angle cutting purse-stringer in one embodiment of the present invention;

[0030] Figure 2 This is a schematic diagram of the closure assembly of the near-right-angle cutting purse-stringer in one embodiment of the present invention;

[0031] Figure 3 This is a schematic diagram of the overall structure of the closing component of the near-right-angle cutting purse-stringer in one embodiment of the present invention;

[0032] Figure 4 This is a schematic diagram of the purse assembly of the near-right-angle cutting purse device in one embodiment of the present invention;

[0033] Figure 5 This is a schematic diagram of the overall structure of the purse assembly of the near-right-angle cutting purse device in one embodiment of the present invention;

[0034] Figure 6 This is a schematic diagram of the structure of the purse assembly and the cutting assembly of the upper clamp of the near-right-angle cutting purse maker in one embodiment of the present invention;

[0035] Figure 7 This is a schematic diagram of the closing assembly, purse assembly, and cutting assembly of the lower clamp of the near-right-angle cutting purse-stringer in one embodiment of the present invention.

[0036] Figure 8 This is a schematic diagram of the structure of the near-right-angle cutting purse-string device operating on the digestive tract in one embodiment of the present invention;

[0037] Figure 9 This is a diagram showing the working state of the near-right-angle cutting purse-string device operating on the digestive tract in one embodiment of the present invention.

[0038] In the diagram, 1 is the upper clamp; 11 is the first transition section; 12 is the first section; and 13 is the first cutting groove.

[0039] 2. Lower clamp; 21. Second transition section; 22. Second section; 23. Second cutting groove;

[0040] 3. Closing assembly; 31. Closing pin pusher block; 32. Closing pin pusher block; 33. Closing pin pusher groove; 34. Closing pin outlet hole; 35. Closing pin; 36. Closing pin anvil;

[0041] 4. Pouch assembly; 41. Pouch pin pusher block; 42. Pouch pin pusher block; 43. Pouch pin pusher groove; 44. Pouch pin exit hole; 45. Pouch pin; 46. Pouch pin anvil; 47. Pouch thread;

[0042] 5. Handle part;

[0043] 6. Sealing cap;

[0044] 7. Head anastomosis surface;

[0045] 8. Cutting components;

[0046] 100. Digestive tract. Detailed Implementation

[0047] The present invention will now be described in more detail with reference to the accompanying drawings, which illustrate preferred embodiments of the invention. It should be understood that those skilled in the art can modify the invention described herein while still achieving its advantageous effects. Therefore, the following description should be understood as being of general knowledge to those skilled in the art and is not intended to limit the scope of the invention.

[0048] The present invention will be described in more detail below by way of example with reference to the accompanying drawings. The advantages and features of the present invention will become clearer from the following description. It should be noted that the drawings are in a very simplified form and use non-precise proportions, and are only used to facilitate and clarify the illustration of the embodiments of the present invention.

[0049] like Figures 1-9 As shown in the figure, this utility model embodiment proposes a convenient and practical near right-angle cutting purse-stringer, including an upper clamp 1, a lower clamp 2, a cutting component 8, a closing component 3, and a purse-stringer component 4.

[0050] Specifically, the upper clamp 1 and the lower clamp 2 are hinged together to form a clamp body for gripping the digestive tract 100; the clamp body has a set bending angle, which ranges from 80 to 135 degrees; the cutting component 8 is disposed within the upper clamp 1 and the lower clamp 2 for cutting the digestive tract 100; the cutting component 8 is located between the closure component 3 and the purse-string component 4; the closure component 3 is disposed on one side of the upper clamp 1 and the lower clamp 2 for closing one end of the digestive tract 100; the purse-string component 4 is disposed on the other side of the upper clamp 1 and the lower clamp 2 for performing a purse-string suture on the other end of the digestive tract 100. This embodiment can simultaneously complete the cutting of the digestive tract 100, the closure of one end, and the suturing of the other end in one operation, improving surgical efficiency and reducing operational steps.

[0051] In one embodiment, the upper clamp 1 includes a first transition section 11 and a first segment 12. Specifically, one end of the first transition section 11 is hinged to the lower clamp 2; the first segment 12 is connected to the other end of the first transition section 11 and can form the predetermined bending angle with the first transition section 11; a first cutting groove 13 is provided in the middle of the first segment 12; the closing component 3 and the purse component 4 are located on both sides of the first cutting groove 13; a portion of the closing component 3 and the purse component 4 is disposed on the first segment 12.

[0052] As will be known to those skilled in the art, the bending angle can be set according to actual surgical needs, and the bending angle can also include other angle ranges besides those in this embodiment. Preferably, the shape of the forceps body is right-angled or approximately right-angled. This design of setting the bending angle allows the cutting purse-string instrument to adapt to the surgical operation needs of deep anatomical structures and narrow spaces, enhancing the accessibility of the instrument and the flexibility of operation.

[0053] In one embodiment, the lower clamp 2 includes a second transition section 21 and a second section 22. Specifically, one end of the second transition section 21 is hinged to one end of the first transition section 11; the second section 22 is connected to the other end of the second transition section 21 and can form the predetermined bending angle with the second transition section 21; a second cutting groove 23 is provided in the middle of the second section 22 corresponding to the first cutting groove 13, and the cutting component 8 is disposed in the first cutting groove 13 or the second cutting groove 23; the other part of the closing component 3 and the purse-string component 4 are correspondingly disposed on the second section 22. This embodiment enables the upper clamp 1 and the lower clamp 2 to form a stable near-right-angle structure, enhancing the operational stability of the cutting purse-string device in deep tissues.

[0054] The hinge between the first transition section 11 and the second transition section 21 adopts a high-precision double bearing structure, and the hinge is equipped with a medical silicone sealing ring to prevent body fluid from seeping in and affecting the hinge function.

[0055] In this embodiment, when the upper clamp 1 and the lower clamp 2 are closed, the first cutting groove 13 and the second cutting groove 23 are aligned to form a through cutting channel. The cutting component 8 can extend from the setting position through the cutting channel to another cutting groove to cut the digestive duct 100 clamped between the upper clamp 1 and the lower clamp 2.

[0056] Preferably, the surfaces of the first segment 12 and the second segment 22 are provided with fine textures to enhance the gripping force when in contact with tissue (i.e., the digestive tract 100 mentioned in the text) and prevent tissue slippage during surgery.

[0057] In one embodiment, reference continues Figures 2-3 As shown, the closing assembly 3 includes a closing pin pusher block 31, a closing pin pusher block 32, a closing pin 35, and a closing pin abutment 36; the lower clamp 2 is provided with a closing pin pusher groove 33, and the closing pin pusher groove 33 is provided with a closing pin outlet hole 34.

[0058] Specifically, the closure pin pushing block 31 is slidably disposed horizontally within the closure pin pushing groove 33; the closure pin pushing block 32 is slidably disposed vertically within the closure pin pushing groove 33; one end of the closure pin 35 is mounted on the closure pin pushing block 32, and the other end can pass through the closure pin exit hole 34; the closure pin abutment 36 is disposed on the upper clamp 1 and corresponds one-to-one with the position of the closure pin 35; the closure pin pushing block 31 can move horizontally along the closure pin pushing groove 33 to drive the closure pin pushing block 32 to move vertically, thereby pushing the closure pin 35 out of the closure pin exit hole 34, passing through one end of the digestive tract 100, and pressing it against the corresponding closure pin abutment 36. The closure pin abutment 36 is made of medical-grade stainless steel with special hardness and has tiny grooves on its surface to guide the deformation direction of the closure pin 35, ensuring consistent deformation and closure effect. The closure component 3 enables the one-sided end of the digestive tract 100 to be closed quickly and reliably, improving the safety and efficiency of the operation.

[0059] Preferably, the contact surface between the closing pin pusher block 31 and the closing pin pusher block 32 is an inclined surface, which converts the horizontal movement of the closing pin pusher block 31 into the vertical movement of the closing pin pusher block 32. Those skilled in the art will know that the inclination angle of the inclined surface can be set according to actual needs. The inclined surface enhances the force transmission efficiency and improves the penetration force and closing effect of the closing pin 35.

[0060] In this embodiment, the closing nail 35 is made of deformable metal material and has a straight body and a tip. When the closing nail 35 passes through the broken end of the digestive tract 100 and comes into contact with the closing nail abutment 36, the tip deforms against the closing nail abutment 36, causing the closing nail 35 to bend into a predetermined shape, thereby closing the broken end of the digestive tract 100.

[0061] In one embodiment, reference continues Figures 4-5 As shown, the purse assembly 4 includes a purse nail pusher block 41, a purse nail pusher block 42, a purse nail 45, a purse nail abutment 46, and a purse thread 47; both the upper clamp 1 and the lower clamp 2 are provided with purse nail pusher grooves 43, and the purse nail pusher grooves 43 are provided with purse nail outlet holes 44.

[0062] Specifically, the purse string nail pushing block 41 is slidably arranged in the purse string nail advancing groove 43 in the horizontal direction; the purse string nail pushing block 42 is slidably arranged in the purse string nail advancing groove 43 in the vertical direction; the purse string nail pushing block 41 can move along the horizontal direction of the purse string nail advancing groove 43 to drive the purse string nail pushing block 42 to move in the vertical direction; the purse string nail abutting seat 46 is fixedly arranged on the purse string nail advancing groove 43; the purse string nail pushing block 42 in the upper clamping part 1 and the purse string nail abutting seat 46 in the lower clamping part 2 are arranged opposite to each other, and the purse string nail pushing block 42 in the lower clamping part 2 and the purse string nail abutting seat 46 in the upper clamping part 1 are arranged opposite to each other; the purse string nail pushing block 42 is arranged between adjacent purse string nail abutting seats 46, and the purse string nail abutting seat 46 is arranged between adjacent purse string nail pushing blocks 42. The structure of the purse string component 4 in the upper clamping part 1 is symmetrically arranged with the structure of the purse string component 4 in the lower clamping part 2, and the purse string nail outlet holes 44 in the upper clamping part 1 and the purse string nail outlet holes 44 in the lower clamping part 2 are arranged in a staggered manner.

[0063] Further, the purse string nail 45 is installed on the purse string nail pushing block 42 in the vertical direction, and extends to the corresponding purse string nail abutting seat 46 under the drive of the purse string nail pushing block 42, and can penetrate through the purse string nail outlet hole 44 and pierce into the other end of the digestive tract 100; the purse string 47 is threaded on the purse string nail 45, and is used to form a suture structure on the other end of the digestive tract 100.

[0064] Preferably, the purse string nail pushing block 41 is provided with an inclined surface, and the contact surface between the purse string nail pushing block 42 and the purse string nail pushing block 41 is an arc surface, so that the horizontal movement of the purse string nail pushing block 41 is converted into the vertical movement of the purse string nail pushing block 42. The contact point between the arc surface and the inclined surface is set as a point contact or a line contact, so as to minimize the frictional resistance and energy loss to the greatest extent. The setting of the arc surface contact structure can improve the transmission efficiency and stability of the driving force, and can also enhance the synchronism and uniformity of the piercing of the purse string nail 45.

[0065] In addition, in order to facilitate the operation of the above components more conveniently, this embodiment further includes a transmission mechanism (not shown in the figure for the sake of simplicity of illustration). Specifically, the transmission mechanism connects the upper clamping part 1 and the lower clamping part 2, and is used to simultaneously drive the cutting component 8 to cut the digestive tract 100, drive the closing component 3 to close one end of the digestive tract 100, and drive the purse string component 4 to perform purse string suture on the other end of the digestive tract 100.

[0066] In this embodiment, the cutting component 8 (or the cutting groove) is located between the closing nail advancing groove 33 and the purse string nail advancing groove 43, and can be as Figures 6-7 shown, the upper clamping part 1 has a "Π" - shaped structure; the lower clamping part 2 has a "mountain" - shaped structure.

[0067] In one specific example, the cutting assembly 8 includes a blade made of medical-grade stainless steel, which can quickly pass through the cutting channel under the action of a transmission mechanism to achieve precise cutting of the digestive tract 100. For example, the blade surface is treated with a special coating to reduce tissue resistance and decrease friction and heat generation during the cutting process.

[0068] In this embodiment, "proximal end" refers to the end closest to the operator and connected to the instrument handle, typically the part controlled and operated by the physician; "distal end" refers to the working end furthest from the operator and located at the front of the instrument, i.e., the part that directly contacts the digestive tract 100 for cutting, closing, and suturing operations. Specifically, the end of the first transition section 11 and the second transition section 21 connected to the handle is the proximal end, and the working part forming a predetermined angle between the first section 12 and the second section 22 is the distal end. In the closure pin advance groove 33, the side closer to the handle is the proximal end, while the side facing the working end is the distal end.

[0069] In addition, this embodiment also includes a handle portion 5, which is disposed at the proximal end and connected to the first transition section 11 and the second transition section 21, for the doctor to operate the instrument.

[0070] In this embodiment, the distal working part of the near-right-angle cutting purse-string device is called the head anastomosis surface 7, which consists of the first segment 12 of the upper clamp 1 and the second segment 22 of the lower clamp 2, forming a predetermined angle for direct contact and processing of the digestive tract 100. The head anastomosis surface 7 is provided with a cutting groove, a closure pin exit hole 34, and a purse-string pin exit hole 44, which are the working positions of the cutting assembly 8, the closure assembly 3, and the purse-string assembly 4.

[0071] In this embodiment, continue to refer to Figures 8-9 As shown. First, the near-right-angle cutting purse-string device is installed on the anastomosis device and then inserted into the abdominal cavity through a sealing cap 6 (patent number ZL202122038968.1) for laparoscopic surgical instrument insertion. This sealing cap 6 differs from the rigid sleeve at the operating port of a traditional trocar (Trocar for Laparoscopy); it has good elasticity and can accommodate instruments of different shapes and larger diameters. Through the elastic deformation of the sealing cap 6, the near-right-angle cutting automatic purse-string maker extends into the abdominal cavity. The sealing cap 6 fits tightly against the instrument surface, effectively preventing gas leakage from the pneumoperitoneum and maintaining a good surgical field of vision.

[0072] Utilizing a predetermined angle design of 80-135 degrees, surgeons can easily guide the laparoscopic near-right-angle cutting purse-string instrument to surgical sites in deep, narrow spaces, such as the esophagogastric junction and low rectum, locations that are difficult to reach with traditional laparoscopic instruments. The articulated structure of the first transition section 11 and the second transition section 21 provides excellent maneuverability, allowing for flexible positioning of the laparoscopic near-right-angle cutting purse-string instrument head.

[0073] Once the laparoscopic near-right-angle cutting purse-string instrument reaches the target position, the surgeon places the digestive tract 100 between the upper clamp 1 and the lower clamp 2. At this time, the fine texture on the surfaces of the first segment 12 of the upper clamp 1 and the second segment 22 of the lower clamp 2 enhances the gripping force when in contact with the tissue, preventing tissue slippage. By controlling the first-stage trigger of the handle 5, the upper and lower clamps 2 are closed to clamp the digestive tract 100.

[0074] After placing the anastomotic surface 7 of the near-right-angle cutting purse-string cutter head at the location of the intended severed digestive tract 100 and clamping it, the doctor continues to press the trigger to activate the cutting, closing, and suturing functions. First, the cutting assembly 8 is activated, and the blade passes through the through-cutting channel formed by the alignment of the first cutting groove 13 and the second cutting groove 23, precisely severing the digestive tract 100 clamped between the upper clamp 1 and the lower clamp 2.

[0075] Next, the closure assembly 3 operates. The closure pin pusher block 31 within the lower clamp 2 moves horizontally from proximal to distal. Since the contact surface between the closure pin pusher block 31 and the closure pin pusher block 32 is inclined, this horizontal movement is converted into vertical movement of the closure pin pusher block 32. The closure pin pusher block 32 rises, pushing the closure pin 35 mounted on it out of the closure pin exit hole 34. The closure pin 35 passes through the closed-side end of the digestive tract 100 (the side of the lesion tissue to be removed). When its tip contacts the closure pin abutment 36 on the upper clamp 1, it undergoes a predetermined deformation under resistance, bending from a "U" shape. Shape structure (such as) Figure 3 As shown, the two ends of the closure staple 35 have identical bends, and the shapes formed by the two bends are approximately the same. Multiple closure staples 35 are evenly distributed and deform simultaneously, forming a tight and reliable closure line that permanently closes the fracture end on that side, preventing leakage of contents and bleeding. This side, containing diseased tissue, needs to be removed; after permanent closure with the closure staples 35, it does not need to be reopened.

[0076] Simultaneously, the purse-string assembly 4 operates. The inclined surface on the purse-string pusher block 41 contacts the arc surface of the purse-string pusher block 42, converting the resulting horizontal movement into vertical movement of the purse-string pusher block 42. The purse-string staple 45, mounted on the purse-string pusher block 42, passes through the purse-string staple exit hole 44 in the vertical direction and pierces the purse-string side (retained side) of the digestive tract 100. The purse-string pusher blocks 42 and purse-string staple abutments 46 in the upper clamp 1 and lower clamp 2 are staggered to form a uniformly distributed arrangement of purse-string lines 47. The purse-string lines 47 pass through the tissue along with the purse-string staple 45, forming a ring-shaped suture structure at the edge of the digestive tract 100 stump. This side is the stump that requires subsequent anastomosis reconstruction, facilitating the subsequent placement of the anvil head of the anastomosis device for digestive tract reconstruction.

[0077] The entire process is completed in a single firing operation, thereby achieving permanent closure of the digestive tract 100 on the side requiring resection and pre-positioning of the purse-string suture 47 on the side requiring reconstruction. No instrument changes or multiple operations are required.

[0078] In summary, the near-right-angle cutting purse cutter proposed in this utility model has the following advantages:

[0079] By integrating the upper clamp, lower clamp, cutting assembly, closure assembly, and purse-string assembly into a single unit, this near-right-angle cutting purse-string device can complete the cutting of the digestive tract, closure of one end, and suturing of the other end in a single operation, effectively simplifying the procedures in laparoscopic surgery. The placement of the cutting assembly between the closure assembly and the purse-string assembly ensures that the two ends of the digestive tract can be treated promptly after cutting, preventing intraoperative contamination and bleeding, and improving surgical safety and efficiency.

[0080] Furthermore, by forming the clamp body with upper and lower clamps, and with the clamp body designed at a predetermined angle of 80-135 degrees, this device solves the problem of insufficient angle adjustment range in existing articulated structures, enabling the instrument to adapt to the surgical needs of deep anatomical structures and narrow spaces. The deformable metal closure staples used in the closure assembly can deform upon contact with the staple anvil after passing through the tissue, forming an ideal closure effect. The staggered arrangement of the purse-string staple pusher and the purse-string staple anvil in the purse-string assembly, along with the coordinated driving function of the transmission mechanism, ensures accurate insertion of the purse-string staples and synchronous suturing, greatly reducing the difficulty and risk of surgery.

[0081] Obviously, those skilled in the art can make various modifications and variations to this utility model without departing from its spirit and scope. Therefore, if these modifications and variations fall within the scope of the claims of this utility model and their equivalents, this utility model also intends to include these modifications and variations.

Claims

1. A near-right-angle cutting purse-stringer, characterized in that, It includes an upper clamp, a lower clamp, a cutting assembly, a closing assembly, and a purse-string assembly; The upper clamp and the lower clamp are hinged together to form a clamp body for clamping the digestive tract; the clamp body is at a set bending angle, which is in the range of 80-135 degrees. The cutting component is disposed within the upper and lower jaws and is used to cut the digestive tract; the cutting component is located between the closure component and the purse-string component. The closure assembly is disposed on one side of the upper clamp and the lower clamp, and is used to close the broken end on one side of the digestive tract; The purse assembly is located on the other side of the upper clamp and the lower clamp, and is used to perform purse suturing on the other end of the digestive tract.

2. The near-right-angle cutting purse-stringer as described in claim 1, characterized in that, The upper clamp includes a first transition section and a first segment; one end of the first transition section is hinged to the lower clamp; the first segment is connected to the other end of the first transition section and can form the set bending angle with the first transition section; a first cutting groove is provided in the middle of the first segment; the closing component and the purse component are located on both sides of the first cutting groove; a portion of the closing component and the purse component are disposed on the first segment.

3. The near-right-angle cutting purse-stringer as described in claim 2, characterized in that, The lower clamp includes a second transition section and a second segment; one end of the second transition section is hinged to one end of the first transition section; the second segment is connected to the other end of the second transition section and can form the set bending angle with the second transition section; a second cutting groove is provided in the middle of the second segment corresponding to the first cutting groove, and the cutting component is disposed in the first cutting groove or the second cutting groove; the other part of the closing component and the purse component are respectively disposed on the second segment.

4. The near-right-angle cutting purse-stringer as described in claim 3, characterized in that, When the upper clamp and the lower clamp are closed, the first cutting groove and the second cutting groove are aligned to form a through cutting channel. The cutting component can extend from the setting position through the cutting channel to another cutting groove to cut the digestive tract clamped between the upper clamp and the lower clamp.

5. The near-right-angle cutting purse-stringer as described in claim 1, characterized in that, The closing assembly includes a closing pin pusher block, a closing pin pusher block, a closing pin, and a closing pin abutment; the lower clamp is provided with a closing pin pusher groove, and the closing pin pusher groove is provided with a closing pin outlet hole; The closing pin pusher block is slidably disposed in the closing pin pusher groove along the horizontal direction; The closing pin pusher block is slidably disposed within the closing pin pusher groove along the vertical direction; One end of the closing pin is mounted on the closing pin pusher block, and the other end can pass through the closing pin outlet hole; The closing pin anvil is disposed on the upper clamp and corresponds one-to-one with the position of the closing pin; The closing pin pusher block can move horizontally along the closing pin pusher groove to drive the closing pin pusher block to move vertically, thereby pushing the closing pin out of the closing pin outlet hole, passing through the broken end on one side of the digestive duct, and pressing it against the corresponding closing pin abutment.

6. The near-right-angle cutting purse-stringer as described in claim 5, characterized in that, The contact surface between the closing pin pusher block and the closing pin pusher block is an inclined surface, which converts the horizontal movement of the closing pin pusher block into the vertical movement of the closing pin pusher block.

7. The near-right-angle cutting purse-stringer as described in claim 5, characterized in that, The closure pin is made of deformable metal material and has a straight body and a tip. When the closure pin passes through the broken end of the digestive tract and comes into contact with the closure pin abutment, the tip deforms against the closure pin abutment, causing the closure pin to bend into a predetermined shape, thereby closing the broken end of the digestive tract.

8. The near-right-angle cutting purse-stringer as described in claim 1, characterized in that, The pouch assembly includes a pouch pin pusher block, a pouch pin pusher block, a pouch pin, a pouch pin abutment, and a pouch thread; both the upper clamp and the lower clamp are provided with pouch pin pusher grooves, and the pouch pin pusher grooves are provided with pouch pin outlet holes; The purse nail pusher block is slidably disposed in the purse nail pusher groove in the horizontal direction; The purse pin pusher block is slidably disposed in the purse pin pusher groove in the vertical direction; the purse pin pusher block can move in the horizontal direction of the purse pin pusher groove to drive the purse pin pusher block to move in the vertical direction. The purse pin anvil is fixedly mounted on the purse pin pusher groove; The purse-string rivet pusher in the upper clamp is opposite to the purse-string rivet abutment in the lower clamp, and the purse-string rivet pusher in the lower clamp is opposite to the purse-string rivet abutment in the upper clamp; a purse-string rivet pusher is provided between adjacent purse-string rivet abutments, and a purse-string rivet abutment is provided between adjacent purse-string rivet pushers; the purse-string assembly structure of the upper clamp and the purse-string assembly structure of the lower clamp are symmetrically arranged, and the purse-string rivet outlet holes of the upper clamp and the purse-string rivet outlet holes of the lower clamp are staggered. The purse-string tack is mounted vertically on the purse-string tack pusher block and extends to the corresponding purse-string tack abutment under the drive of the purse-string tack pusher block, and can pass through the purse-string tack exit hole to pierce the other end of the digestive tract; the purse-string suture is threaded on the purse-string tack and is used to form a suture structure on the other end of the digestive tract.

9. The near-right-angle cutting purse-stringer as described in claim 8, characterized in that, The purse nail pusher block has an inclined surface, and the contact surface between the purse nail pusher block and the purse nail pusher block is an arc surface, so that the horizontal movement of the purse nail pusher block is converted into the vertical movement of the purse nail pusher block.

10. The near-right-angle cutting purse-stringer as described in claim 1, characterized in that, It also includes a transmission mechanism; the transmission mechanism connects the upper clamp and the lower clamp, and is used to simultaneously drive the cutting assembly to cut the digestive tract, drive the closing assembly to close one end of the digestive tract, and drive the purse-string assembly to perform purse-string suture on the other end of the digestive tract.

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