Linear anastomat with cutting assembly

Abstract

The utility model discloses a linear anastomat with cutting assembly relates to medical instrument technical field, the utility model discloses a gun handle one side fixedly connected with operation cavity, operation cavity one side fixedly connected with the gun body, the gun body inner chamber is provided with cutting assembly, the utility model discloses the linkage design through cutting assembly and operating assembly, realized the hidden telescopic control of cutting knife, when rotating handle, second gear drive double -sided tooth board drive cutting knife from the protection shell and expose, simultaneously passive tooth board is through the rotation closing of the traction anastomat head of drawstring, make cutting knife only expose after the complete closing of anastomat head, effectively avoided the risk of cutting knife accidentally cutting the tissue of patient in the operation process, the protection baffle of protection shell inner chamber further restricts the non - working state activity range of cutting knife, and double - protected mechanism has improved the operation safety, reduced the psychological burden when the doctor operates.

Description

Technical Field

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

[0002] A linear stapler is a medical device used in surgical procedures. Its main function is to achieve postoperative tissue anastomosis and healing by simultaneously cutting and suturing tissue. It is commonly used in gastrointestinal surgeries, such as gastrointestinal anastomosis and intestinal dissection. The device consists of multiple components, including a handle, a gun body, a cutting assembly, a suture ring or staple cartridge, a stapler head, a positioning ring, a drive system, and a safety locking device. During operation, it ensures the precision of cutting and a firm connection with the tissue, greatly improving surgical efficiency and safety.

[0003] The existing linear staplers still have some problems in use. For example, the cutting blade of the stapler is usually directly installed at one end of the device, while the location of the tissue to be removed is often variable. This design requires doctors to be extremely careful during operation to avoid unnecessary harm to the patient from the exposed cutting blade, which could affect the normal surgical procedure. Because the exposed cutting blade may cause accidental damage to surrounding tissues during the operation, doctors need to be extremely cautious, which increases the difficulty and risk of the surgery.

[0004] To address these issues, we provide a linear stapler with a cutting component. Utility Model Content

[0005] The purpose of this invention is to provide a linear stapler with a cutting component. By combining the cutting component and the operating component, this invention solves the problems of existing linear staplers where the exposed cutting blade can easily injure the patient and the operation is cumbersome.

[0006] To solve the above-mentioned technical problems, this utility model is achieved through the following technical solution.

[0007] This utility model relates to a linear anastomosis device with a cutting component, comprising a handle, an operating chamber fixedly connected to one side of the handle, and a gun body fixedly connected to one side of the operating chamber. The cutting component is housed within the gun body, comprising a first gear movably connected to the gun body, a double-sided toothed plate slidably connected to one side of the gun body, a cutting blade fixedly connected to one side of the double-sided toothed plate, and a passive toothed plate slidably connected to the other side of the gun body. The cutting component is used to cut the patient's tissue. The operating chamber is also housed within an operating component, comprising a rotating shaft movably connected to one side of the operating chamber, a handle fixedly connected to the surface of the rotating shaft, and a second gear fixedly connected to the surface of the rotating shaft. The second gear meshes with the double-sided toothed plate. The operating component is used to drive the cutting blade and the anastomosis head.

[0008] The present invention is further configured such that a matching head is movably connected to one side of the gun body surface via a bearing, a pull rope is fixedly connected to one side of the matching head, and one end of the pull rope is fixedly connected to one side of the passive toothed plate.

[0009] The present invention is further configured such that a protective shell is fixedly connected to one end of the gun body, and the inner cavity of the protective shell is slidably connected to the surface of the cutting blade.

[0010] The present invention is further configured such that a return spring is fixedly connected to one side of the handle, and one end of the return spring is fixedly connected to one side of the surface of the operating cavity.

[0011] The present invention is further configured such that an opening is provided at the bottom of the operating cavity, and the surface of the handle is movably connected to the inner cavity of the opening.

[0012] The present invention is further configured such that limit strips are fixedly connected to both sides of the double-sided toothed plate and the passive toothed plate, and one side of the limit strip is slidably connected to the inner cavity of the gun body.

[0013] The present invention is further configured such that protective baffles are fixedly connected to both sides of the inner cavity of the protective shell, and one side of the protective baffle is slidably connected to the side of the cutting blade.

[0014] The present invention has the following beneficial effects.

[0015] 1. This utility model achieves concealed telescopic control of the cutting blade through the linkage design of the cutting component and the operating component. When the handle is turned, the second gear drives the double-sided toothed plate to extend the cutting blade from the protective shell. At the same time, the passive toothed plate pulls the anastomosis head to rotate and close through the pull rope, so that the cutting blade is only exposed after the anastomosis head is completely closed. This effectively avoids the risk of the cutting blade accidentally scratching the patient's tissue during the operation. The protective baffle in the inner cavity of the protective shell further restricts the range of motion of the cutting blade in the non-working state. The dual protection mechanism significantly improves the safety of the operation and reduces the psychological burden on the doctor during operation.

[0016] 2. This utility model utilizes the mechanical coupling of a gear and toothed plate transmission system to synchronously convert the rotational motion of the handle into the linear advance of the cutting blade and the closing action of the anastomosis head, simplifying the operation process. The symmetrical limiting strip design of the double-sided toothed plate and the passive toothed plate ensures transmission stability and avoids jamming. The return spring automatically returns the handle to the initial position, facilitating repeated operation. During the extension process, the cutting blade is guided by the sliding of the inner wall of the protective shell to maintain the accuracy of linear motion. Combined with the pressure closing of the anastomosis head, it forms a highly efficient shearing force, improving the neatness and speed of tissue cutting, and is especially suitable for precise anastomosis surgery of fragile tissues such as the digestive tract.

[0017] Of course, any product implementing this utility model does not necessarily need to achieve all of the advantages described above at the same time. Attached Figure Description

[0018] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings used in the description of the embodiments will be briefly introduced below.

[0019] Figure 1 A perspective view of a linear stapler with a cutting component.

[0020] Figure 2 This is a cross-sectional view of the operating chamber and the gun body in a linear stapler with a cutting component.

[0021] Figure 3 This is an exploded view of the operating chamber and the internal structure of the gun body in a linear stapler with a cutting component.

[0022] Figure 4 This is a schematic diagram of the protective shell and the anastomosis head in a linear stapler with a cutting component.

[0023] Figure 5 This is a schematic diagram of the anastomosis head and passive toothed plate in a linear stapler with a cutting component.

[0024] In the attached diagram: 1. Gun handle; 2. Operating chamber; 3. Gun body; 4. First gear; 5. Double-sided toothed plate; 6. Cutting blade; 7. Passive toothed plate; 8. Rotating shaft; 9. Handle; 10. Second gear; 11. Matching head; 12. Pull rope; 13. Protective shell; 14. Return spring; 15. Opening; 16. Limiting strip; 17. Protective baffle. Detailed Implementation

[0025] The technical solutions of the present utility model will be described below with reference to the accompanying drawings. The described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0026] Example 1

[0027] Please see Figures 1-5 This utility model relates to a linear anastomosis device with a cutting component, comprising a handle 1, an operating chamber 2 fixedly connected to one side of the handle 1, the operating chamber 2 communicating with the inner cavity of the gun body 3, so as to drive the cutting blade 6 and the anastomosis head 11 to move and rotate via a handle 9, and the gun body 3 fixedly connected to one side of the operating chamber 2; the cutting component is provided in the inner cavity of the gun body 3, the cutting component including a first gear 4 movably connected to the inner cavity of the gun body 3, the first gear 4 being rotatably connected to the inner cavity of the gun body 3 via a bearing, and a double-sided toothed plate 5 slidably connected to one side of the inner cavity of the gun body 3, one side of the teeth of the double-sided toothed plate 5 meshing with the surface teeth of the first gear 4, and the other side of the teeth meshing with the surface teeth of the second gear 10, thereby driving the cutting blade 6 to move via the handle 9, and the cutting blade 6 fixedly connected to one side of the double-sided toothed plate 5 is prior art. The stapler contains a blade and a passive toothed plate 7 slidably connected to the other side of the inner cavity of the gun body 3. The blade is used to cut the patient's tissue through the cutting assembly. The operating cavity 2 is equipped with an operating assembly, which includes a rotating shaft 8 movably connected to one side of the inner cavity of the operating cavity 2, and a handle 9 fixedly connected to the surface of the rotating shaft 8. The top of the handle 9 is fixed to both sides of the surface of the rotating shaft 8. The center of the rotating shaft 8 is fixed in the inner cavity of the second gear 10. This allows the second gear 10 to rotate by an angle when the handle 9 is rotated. The handle 9 can rotate by a sufficient angle to move the cutting blade 6 and rotate the anastomosis head 11. The second gear 10 is fixedly connected to the surface of the rotating shaft 8 and meshes with the double-sided toothed plate 5. The operating assembly is used to drive the cutting blade 6 and the anastomosis head 11.

[0028] Example 2

[0029] Please see Figures 1-5Based on Embodiment 1, a mating head 11 is movably connected to one side of the gun body 3 via a bearing. The mating head 11 is an existing structure, and a spring is provided at the connection between the mating head 11 and the surface of the gun body 3 so that the mating head 11 can automatically reset when the second gear 10 reverses. A pull rope 12 is fixedly connected to one side of the mating head 11. The pull rope 12 is made of steel cable and is always taut. One end of the pull rope 12 is fixedly connected to one side of the passive toothed plate 7. A protective shell 13 is fixedly connected to one end of the gun body 3. The protective shell 13 can protect both sides of the cutting blade 6, and the surface of the cutting blade 6 extends to the outside of the protective shell 13. After rotating a certain angle, the mating head 11 can engage with... The surface of the cutting blade 6 is fitted to facilitate cutting. The inner cavity of the protective shell 13 is slidably connected to the surface of the cutting blade 6. A return spring 14 is fixedly connected to one side of the handle 9. One end of the return spring 14 is fixedly connected to one side of the surface of the operating cavity 2. An opening 15 is provided at the bottom of the operating cavity 2. The surface of the handle 9 is movably connected to the inner cavity of the opening 15. Limiting strips 16 are fixedly connected to both sides of the double-sided toothed plate 5 and the passive toothed plate 7. The limiting strips 16 can limit the double-sided toothed plate 5 and the passive toothed plate 7. One side of the limiting strip 16 is slidably connected to the inner cavity of the gun body 3. Protective baffles 17 are fixedly connected to both sides of the inner cavity of the protective shell 13. One side of the protective baffle 17 is slidably connected to one side of the cutting blade 6.

[0030] The working principle of this utility model is as follows: When the operator turns the handle 9, the second gear 10 fixed on the rotating shaft 8 rotates accordingly. Through the meshing transmission with the double-sided toothed plate 5, the double-sided toothed plate 5 is driven to slide linearly along the inner cavity of the gun body 3. At the same time, the cutting blade 6 fixed on it extends out from the protective shell 13. The teeth on the other side of the double-sided toothed plate 5 indirectly transmit the passive toothed plate 7 through the first gear 4, causing the passive toothed plate 7 to slide in the opposite direction. The anastomosis head 11 is pulled around the bearing to rotate and close by the pull rope 12. After the anastomosis head 11 is completely closed and forms a shearing engagement with the cutting blade 6, the cutting blade 6 is fully exposed. At this time, continuing to turn the handle 9 can push the cutting blade 6 to complete the tissue cutting.

[0031] After cutting is completed, release handle 9, return spring 14 pulls handle 9 to reset, second gear 10 reverses to drive double-sided toothed plate 5 to retract, cutting blade 6 retracts into protective shell 13, passive toothed plate 7 resets and releases mating head 11 through pull rope 12, so that it opens automatically under the action of spring. Throughout the process, limit bar 16 ensures stable movement trajectory of toothed plate, and protective baffle 17 restricts the displacement of cutting blade 6 in non-working state, realizing linkage control of safety protection and precise cutting.

[0032] The foregoing description only illustrates certain exemplary embodiments of the present invention. Undoubtedly, those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A linear stapler with a cutting component, comprising a handle (1), characterized in that: The gun handle (1) is fixedly connected to an operating cavity (2) on one side, and the gun body (3) is fixedly connected to one side of the operating cavity (2); The gun body (3) is provided with a cutting assembly. The cutting assembly includes a first gear (4) movably connected to the inner cavity of the gun body (3), a double-sided toothed plate (5) slidably connected to one side of the inner cavity of the gun body (3), a cutting blade (6) fixedly connected to one side of the double-sided toothed plate (5), and a passive toothed plate (7) slidably connected to the other side of the inner cavity of the gun body (3). The cutting assembly is used to cut the patient's tissue. The operating cavity (2) is provided with an operating component, which includes a rotating shaft (8) movably connected to one side of the operating cavity (2), a handle (9) fixedly connected to the surface of the rotating shaft (8), and a second gear (10) fixedly connected to the surface of the rotating shaft (8). The second gear (10) meshes with a double-sided toothed plate (5) and is used to drive the cutting blade (6) and the anastomosis head (11) through the operating component.

2. A linear stapler with a cutting component according to claim 1, characterized in that: A matching head (11) is movably connected to one side of the surface of the gun body (3) via a bearing. A pull rope (12) is fixedly connected to one side of the matching head (11). One end of the pull rope (12) is fixedly connected to one side of the passive toothed plate (7).

3. A linear stapler with a cutting component according to claim 1, characterized in that: The gun body (3) is fixedly connected to a protective shell (13) at one end, and the inner cavity of the protective shell (13) is slidably connected to the surface of the cutting blade (6).

4. A linear stapler with a cutting component according to claim 1, characterized in that: A reset spring (14) is fixedly connected to one side of the handle (9), and one end of the reset spring (14) is fixedly connected to one side of the surface of the operating cavity (2).

5. A linear stapler with a cutting component according to claim 1, characterized in that: The operating cavity (2) has an opening (15) at the bottom, and the surface of the handle (9) is movably connected to the inner cavity of the opening (15).

6. A linear stapler with a cutting component according to claim 1, characterized in that: Both sides of the double-sided toothed plate (5) and the passive toothed plate (7) are fixedly connected to limit strips (16), and one side of the limit strip (16) is slidably connected to the inner cavity of the gun body (3).

7. A linear stapler with a cutting component according to claim 3, characterized in that: The protective shell (13) has protective baffles (17) fixedly connected to both sides of its inner cavity. One side of the protective baffle (17) is slidably connected to the side of the cutting blade (6).

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