Linear cutting anastomat with inverted jaw

Abstract

The utility model discloses a linear cutting anastomat with an inverted jaw. The linear cutting anastomat comprises an anastomat body, a jaw cutting assembly, a closing handle and a percussion handle. In the application, the locking sleeve is rotated to be screwed with the threaded section of the sliding rod until the locking sleeve is tightly attached to the outer surface wall of the front building frame, the locking of the sliding rod and the closing handle is realized through friction force, then the locking sleeve on the outer side of the percussion handle is rotated to be separated from the outer surface wall of the rear building frame, and at the moment, the sliding rod on the outer side of the percussion handle loses constraining force; when the percussion handle is manually shifted, the group of sliding rods can slide along the sliding grooves in the rear building frame, the closing handle cannot deflect due to mistaken touch at the moment, in the same way, the locking sleeve on the outer side of the closing handle is loosened, the locking sleeve on the outer side of the percussion handle is locked, and then the operation of closing the handle can be achieved. Therefore, the mutual interference between the percussion handle and the closing handle is reduced, and the use stability of the linear cutting anastomat with the inverted jaw is improved.

Description

Technical Field

[0001] This utility model relates to the field of anastomosis device technology, and in particular to a linear cutting anastomosis device with inverted jaws. Background Technology

[0002] Minimally invasive surgery is a novel treatment method in surgical procedures. It achieves the same therapeutic effect as traditional surgery but with relatively less trauma. The endoscopic anastomosis device suitable for minimally invasive surgery is a device that can fire multiple rows of interlaced anastomotic studs onto human tissue and bend them into a "B" shape to achieve anastomosis. It can also use a cutting blade to cut the tissue between the rows of anastomotic studs. It is one of the instruments widely used in minimally invasive surgery and is suitable for closing stumps or incisions in laparoscopic organ resection and digestive tract reconstruction surgery.

[0003] Chinese Patent Publication No. CN219538388U, published on August 18, 2023, discloses an intracavitary cutting and stapler with inverted jaws, relating to the technical field of intracavitary cutting and staplers. The device includes a cutting blade, a spring piece internally connected to the cutting blade, a hinge shaft externally connected to the outer wall of the spring piece, an anvil externally connected to the outer wall of the hinge shaft, a staple cartridge externally connected to the outer wall of the hinge shaft, a staple cartridge bracket externally connected to one end of the cutting blade, a locking chamber externally connected to one end of the staple cartridge bracket, and a dial externally connected to one end of the locking chamber.

[0004] Existing linear staplers, such as the one described above, have a cutting blade at the front, resulting in a device with a hinged front end and a rearward opening. After the jaws are pre-closed by the cutting blade, the jaws are locked by a locking chamber. The rearward opening facilitates the use of the device. However, in practice, for ease of operation, the closing handle and firing handle used for driving are integrated into the grip handle with a small gap, which can easily lead to accidental activation. Therefore, there is an urgent need to propose a linear stapler with inverted jaws to solve the above problems. Utility Model Content

[0005] The purpose of this utility model is to provide a linear cutting stapler with inverted jaws in order to solve the above-mentioned problems.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] A linear cutting anastomosis device with inverted jaws includes a body, a jaw cutting assembly, a closing handle, and a firing handle. A grip is fixedly connected to the bottom of the body. A front frame and a rear frame are fixedly connected to the outer wall of the grip via a mounting plate. Two sets of sliding rods are fixedly connected to the opposite surfaces of the closing handle and the firing handle, respectively. The two sets of sliding rods are slidably connected to the inner walls of the front frame and the rear frame, respectively, and the two sets of sliding rods are fixedly connected to the front frame and the rear frame via two sets of locking assemblies.

[0008] Preferably, the mounting plate is fixedly connected to the handle via a locking rod, and the two sets of sliding rods are respectively fixedly connected to the closing handle and the firing handle via two sets of fastening rods.

[0009] Preferably, the inner surface of the mounting plate and the sliding rod are respectively interference-fitted with rubber pad one and rubber pad two, and the rubber pad one and rubber pad two abut against the outer surface of the locking rod and the fastening rod respectively.

[0010] Preferably, the locking assembly includes two sets of locking sleeves, both sets of slide rods are composed of threaded sections and smooth sections, the two sets of locking sleeves are respectively screwed into the two sets of threaded sections, and the two sets of locking sleeves respectively abut against the outer walls of the front frame and the rear frame.

[0011] Preferably, the opposing surfaces of both sets of locking sleeves are provided with rough texture.

[0012] Preferably, the platform is integrally formed with the front frame and the rear frame.

[0013] Preferably, rectangular blocks are fixedly connected to the opposite surfaces of the two sets of sliding rods, and slots matching the rectangular blocks are opened on the opposite sides of the closing handle and the firing handle, and the two sets of fastening rods slide in cooperation with the interior of the two sets of rectangular blocks respectively.

[0014] In summary, due to the adoption of the above technical solution, the beneficial effects of this utility model are:

[0015] 1. In this application, the locking sleeve is rotated to engage with the threaded section of the slide bar until the locking sleeve is tightly pressed against the outer wall of the front frame. This achieves locking of the slide bar and the closing handle through friction. Then, the locking sleeve on the outside of the firing handle is rotated to disengage it from the outer wall of the rear frame. At this time, the slide bar on the outside of the firing handle loses its restraint. When the firing handle is manually moved, the slide bar can slide along the sliding groove inside the rear frame. At this time, the closing handle will not deflect due to accidental contact. Similarly, the locking sleeve on the outside of the closing handle is loosened, while the locking sleeve on the outside of the firing handle is locked, thus enabling the operation of the closing handle. This reduces the mutual interference between the firing handle and the closing handle and improves the stability of the inverted jaw linear cutting stapler.

[0016] 2. In this application, the two sets of protruding rods are fixed to the firing handle and the closing handle by two sets of fastening rods, while the mounting plate is fixed to the grip handle by the locking rod, thereby ensuring the convenience of disassembly and assembly of the overall constraint assembly. The rubber pads 1 and 2 are inserted into the mounting plate and the sliding rod respectively, and the interference fit ensures the stability of the position of the rubber pads 1 and 2. The rubber pads 1 and 2 can limit the loosening of the locking rod and the fastening rod through friction. Attached Figure Description

[0017] Figure 1 A schematic diagram of the overall structure according to an embodiment of the present utility model is shown;

[0018] Figure 2 A schematic diagram of the front and rear frame structures provided according to an embodiment of the present invention is shown;

[0019] Figure 3 A schematic diagram of the mounting plate structure provided according to an embodiment of the present utility model is shown;

[0020] Figure 4 A schematic diagram of a fastening rod structure according to an embodiment of the present invention is shown.

[0021] Legend:

[0022] 1. Body; 2. Jaw cutting assembly; 3. Handle; 4. Closing handle; 5. Firing handle; 6. Platform; 7. Front platform; 8. Rear platform; 9. Locking rod; 10. Rubber pad one; 11. Slot; 12. Rectangular block; 13. Slide rod; 14. Rubber pad two; 15. Locking sleeve; 16. Fastening rod. Detailed Implementation

[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present utility model.

[0024] Please see Figure 1-4 This utility model provides a technical solution:

[0025] A linear cutting anastomosis device with inverted jaws includes a body 1, a jaw cutting assembly 2, a closing handle 4, and a firing handle 5. A gripping handle 3 is fixedly connected to the bottom of the body 1. A front frame 7 and a rear frame 8 are fixedly connected to the outer wall of the gripping handle 3 via a mounting plate 6. Two sets of sliding rods 13 are fixedly connected to the opposite faces of the closing handle 4 and the firing handle 5, respectively. The two sets of sliding rods 13 are slidably connected to the inner walls of the front frame 7 and the rear frame 8, respectively, and the two sets of sliding rods 13 are fixedly connected to the front frame 7 and the rear frame 8 via two sets of locking assemblies.

[0026] Rotate the locking sleeve 15 to engage with the threaded section of the slide bar 13 until the locking sleeve 15 is tightly pressed against the outer wall of the front frame 7. This achieves locking of the slide bar 13 and the closing handle 4 through friction. Then, rotate the locking sleeve 15 on the outside of the firing handle 5 to disengage it from the outer wall of the rear frame 8. At this time, the slide bar 13 on the outside of the firing handle 5 loses its restraint. When the firing handle 5 is manually moved, the slide bar 13 can slide along the sliding groove inside the rear frame 8. At this time, the closing handle 4 will not deflect due to accidental contact. Similarly, the locking sleeve 15 on the outside of the closing handle 4 is loosened, while the locking sleeve 15 on the outside of the firing handle 5 is locked, thus enabling the operation of the closing handle 4. This reduces the mutual interference between the firing handle 5 and the closing handle 4 and improves the stability of the inverted jaw linear cutting stapler.

[0027] It should be noted that the working mechanism of the cutting anastomosis device here is to control the inverted jaws of the jaw cutting assembly to complete the cutting by closing the handle 4 and firing the handle 5. This technical feature is existing technology, so it will not be described in detail here.

[0028] Specifically, such as Figure 2 and Figure 4 As shown, the mounting plate 6 is fixedly connected to the handle 3 via the locking rod 9. The two sets of sliding rods 13 are fixedly connected to the closing handle 4 and the firing handle 5 via two sets of fastening rods 16. Rubber pad 10 and rubber pad 2 14 are respectively interference-fitted on the inner surface of the mounting plate 6 and the sliding rod 13. Rubber pad 10 and rubber pad 2 14 abut against the outer surface of the locking rod 9 and the fastening rod 16. The two sets of sliding rods 13 are fixed to the firing handle 5 and the closing handle 4 via two sets of fastening rods 16. The mounting plate 6 is fixed to the handle 3 via the locking rod 9, thus ensuring the convenience of disassembly and assembly of the overall restraint assembly. By inserting rubber pad 10 and rubber pad 2 14 into the mounting plate 6 and the sliding rod 13 respectively, the interference fit ensures the stability of the position of rubber pad 10 and rubber pad 2 14. Rubber pad 10 and rubber pad 2 14 can limit the loosening of the locking rod 9 and the fastening rod 16 through friction.

[0029] Specifically, such as Figure 2 and Figure 3As shown, the locking assembly includes two sets of locking sleeves 15, and two sets of sliding rods 13, each consisting of a threaded section and a smooth section. The two sets of locking sleeves 15 are screwed into the two sets of threaded sections respectively, and the two sets of locking sleeves 15 abut against the outer walls of the front frame 7 and the rear frame 8 respectively. Rotating the locking sleeve 15 causes it to engage with the threaded section of the sliding rod 13 until the locking sleeve 15 is tightly pressed against the outer wall of the front frame 7. This achieves locking of the sliding rod 13 and the closing handle 4 through friction. The opposing surfaces of the two sets of locking sleeves 15 are provided with rough textures. To ensure the stability of the connection between the two sets of locking sleeves 15 and the two sets of frames, the mounting plate 6 is integrally formed with the front frame 7 and the rear frame 8 to ensure the structural strength of the three. Rectangular blocks 12 are fixedly connected to the opposite faces of the two sets of sliding rods 13. The back of the closing handle 4 and the firing handle 5 are provided with slots 11 that match the rectangular blocks 12. The two sets of fastening rods 16 are respectively slidably engaged with the interior of the two sets of rectangular blocks 12. The engagement between the rectangular blocks 12 and the slots 11 can limit the loosening of the sliding rods 13 during the deflection process.

[0030] Working principle: Rotate the locking sleeve 15 to engage with the threaded section of the slide rod 13 until the locking sleeve 15 is tightly against the outer wall of the front frame 7. This achieves locking of the slide rod 13 and the closing handle 4 through friction. Next, rotate the locking sleeve 15 on the outside of the firing handle 5 to disengage it from the outer wall of the rear frame 8. At this point, the slide rod 13 on the outside of the firing handle 5 loses its restraint. When the firing handle 5 is manually moved, the slide rod 13 can slide along the groove inside the rear frame 8. The closing handle 4 will not deflect due to accidental contact. Similarly, the locking sleeve 15 on the outside of the closing handle 4 loosens, while the locking sleeve 15 on the outside of the firing handle 5 locks, thus achieving the closing of the handle 4. The operation reduces the mutual interference between the firing handle 5 and the closing handle 4, and improves the stability of the inverted jaw linear cutting stapler. The two sets of slide bars 13 are fixed to the firing handle 5 and the closing handle 4 respectively by two sets of fastening rods 16, while the mounting plate 6 is fixed to the holding handle 3 by the locking rod 9, thus ensuring the convenience of disassembly and assembly of the overall constraint assembly. The rubber pad 10 and the rubber pad 2 14 can be inserted into the mounting plate 6 and the slide bar 13 respectively. The interference fit ensures the stability of the position of the rubber pad 10 and the rubber pad 2 14. The rubber pad 10 and the rubber pad 2 14 can limit the loosening of the locking rod 9 and the fastening rod 16 through friction.

[0031] The above description of the embodiments enables those skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A linear cutting stapler with inverted jaws, comprising a body (1), a jaw cutting assembly (2), a closing handle (4), and a firing handle (5), characterized in that, The bottom of the device (1) is fixedly connected to a handle (3). The outer wall of the handle (3) is fixedly connected to a front frame (7) and a rear frame (8) via a mounting plate (6). The closing handle (4) and the firing handle (5) are respectively fixedly connected to two sets of sliding rods (13). The two sets of sliding rods (13) are slidably connected to the inner walls of the front frame (7) and the rear frame (8), respectively. The two sets of sliding rods (13) are fixedly connected to the front frame (7) and the rear frame (8) via two sets of locking components.

2. A linear cutting stapler with inverted jaws according to claim 1, characterized in that, The mounting plate (6) is fixedly connected to the handle (3) via the locking rod (9), and the two sets of sliding rods (13) are fixedly connected to the closing handle (4) and the firing handle (5) via two sets of fastening rods (16).

3. A linear cutting stapler with inverted jaws according to claim 2, characterized in that, The inner walls of the mounting plate (6) and the sliding rod (13) are respectively fitted with rubber pad one (10) and rubber pad two (14), and the rubber pad one (10) and rubber pad two (14) respectively abut against the outer walls of the locking rod (9) and the fastening rod (16).

4. A linear cutting stapler with inverted jaws according to claim 3, characterized in that, The locking assembly includes two sets of locking sleeves (15), and the two sets of slide rods (13) are composed of threaded sections and smooth sections. The two sets of locking sleeves (15) are respectively screwed into the two sets of threaded sections, and the two sets of locking sleeves (15) respectively abut against the outer walls of the front frame (7) and the rear frame (8).

5. A linear cutting stapler with inverted jaws according to claim 4, characterized in that, Both sets of locking sleeves (15) have rough textures on their opposite surfaces.

6. A linear cutting stapler with inverted jaws according to claim 5, characterized in that, The mounting plate (6) is integrally formed with the front frame (7) and the rear frame (8).

7. A linear cutting stapler with inverted jaws according to claim 6, characterized in that, Both sets of sliding rods (13) have rectangular blocks (12) fixedly connected to their opposite faces. The closing handle (4) and the firing handle (5) have slots (11) that match the rectangular blocks (12) on their opposite sides. The two sets of fastening rods (16) slide in cooperation with the interior of the two sets of rectangular blocks (12).

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