Linear anastomat with multiple locking insurance

Abstract

The utility model relates to the technical field of medical instruments, in particular to a linear anastomat with multiple locking insurance, which comprises a driving assembly, a cutting assembly and a multiple locking assembly. The multi-locking assembly works cooperatively through the main locking unit and the auxiliary locking unit, so that the safety and the stability are improved; the sliding adjusting piece realizes flexible adjustment of the position of the driving assembly; the guide pipe and the sliding rod are designed to reduce the weight and improve the accuracy; the cutting efficiency and the suturing effect are optimized through the cutting knife and the suturing needle. The risk of false triggering or structure loosening can be effectively avoided, the operation complexity is reduced, the requirement of a complex operation environment is met, and the safety, stability and operation convenience of the instrument are remarkably improved.

Description

Technical Field

[0001] This utility model belongs to the field of medical device technology, specifically a linear stapler with multiple locking safety features. Background Technology

[0002] In medical surgery, linear staplers are a commonly used medical device whose main function is to cut and suture tissues mechanically.

[0003] Currently, most linear staplers on the market employ a single locking mechanism to ensure operational safety and stability. However, a single locking mechanism may have limitations in complex surgical environments. For example, under high load or accidental contact, it may not completely prevent the risk of accidental triggering or structural loosening. Furthermore, the design of existing devices typically requires surgeons to perform multiple manual adjustments during operation to ensure the instrument is in optimal working condition, which increases the number of surgical steps and time costs.

[0004] Therefore, we have made improvements to this by proposing a linear stapler with multiple locking safety features. Utility Model Content

[0005] The purpose of this invention is to solve the problems of existing linear staplers, which have the risk of accidental triggering or structural loosening in complex surgical environments due to a single locking mechanism, as well as the cumbersome operation steps and high time costs.

[0006] To achieve the aforementioned objectives and address the aforementioned problems, this utility model provides a linear stapler with multiple locking mechanisms, comprising a drive assembly, a cutting assembly, and a multiple locking assembly. The drive assembly is connected to the cutting assembly via a transmission component, transmitting operating force to the cutting assembly to complete tissue cutting and suturing. The multiple locking assembly includes a main locking unit and an auxiliary locking unit. The main locking unit is located at the front end of the drive assembly, and the auxiliary locking unit is located in the middle region of the transmission component. The main locking unit and the auxiliary locking unit work collaboratively via a linkage component. Mounting brackets are provided on both sides of the drive assembly, and sliding adjustment components are provided inside the mounting brackets to adjust the position of the drive assembly to adapt to different surgical needs.

[0007] The main locking unit includes a locking rod and a locking groove. One end of the locking rod is fixedly connected to the drive assembly, and the other end is embedded in the locking groove. The locking groove is located on the front end face of the mounting bracket. The inner wall of the locking groove has multiple teeth, and the outer surface of the locking rod has protrusions that match the teeth. The locking rod is fixed in position by engaging the protrusions with the teeth. The auxiliary locking unit includes a locking block and a limiting plate. The locking block is located in the middle region of the transmission component, and the limiting plate is located on both sides of the transmission component and fixedly connected to the mounting bracket. The locking block has elastic elements at both ends. One end of the elastic element is fixedly connected to the locking block, and the other end is fixedly connected to the limiting plate. The locking block maintains a clamping state on the transmission component through the tension of the elastic elements.

[0008] As a preferred technical solution of this application, the drive assembly includes a handle and a push rod. The handle and the push rod are connected by a hinge shaft. Bearings are provided at both ends of the hinge shaft. The outer ring of the bearing is fixedly connected to a mounting bracket. One end of the push rod is fixedly connected to a transmission component, and the other end is connected to the handle via a threaded connection. The gripping part of the handle is provided with an anti-slip pad. The surface of the anti-slip pad has multiple grooves with a depth of 1-2 mm to increase friction and improve operational stability.

[0009] As a preferred technical solution of this application, the transmission component includes a hollow guide tube, inside which is provided a sliding rod. One end of the sliding rod is fixedly connected to a push rod, and the other end is fixedly connected to a cutting assembly. The outer surface of the guide tube is provided with scale markings to indicate the moving distance of the sliding rod. Sealing rings made of silicone are provided at both ends of the guide tube to prevent liquid from entering the interior of the guide tube.

[0010] As a preferred technical solution of this application, the cutting assembly includes a cutting blade and suture needles. The cutting blade is located in front of the suture needles, and the blade edge is arc-shaped. The surface of the blade edge is coated with a wear-resistant coating with a thickness of 0.1-0.2 mm. There are two rows of suture needles, located on either side of the cutting blade. Each row contains 6-8 suture needles, and the tips of the suture needles have barbed structures at an angle of 30-45 degrees to enhance the suturing effect.

[0011] As a preferred technical solution of this application, the sliding adjustment component includes a slide rail and a slider. The slide rail is fixedly installed on the inner side of the mounting bracket, and the slider is slidably connected to the slide rail. The top of the slider is provided with a bolt hole, and a fastening bolt is provided in the bolt hole. The fastening bolt is used to fix the slider at a specific position on the slide rail. The bottom of the slider is provided with a connecting ear, which is connected to the drive assembly through a pin. Locking nuts are provided at both ends of the pin to prevent the pin from loosening.

[0012] As a preferred technical solution of this application, the elastic element is a spring made of stainless steel, with a diameter of 5-8 mm and a free length of 20-30 mm. One end of the spring is welded to the end face of the locking block, and the other end is welded to the inner side of the limiting plate. The welding points are polished to reduce stress concentration.

[0013] As a preferred technical solution of this application, the bottom of the mounting bracket is provided with a support plate. The support plate is rectangular in shape, and each of the four corners of the support plate has a mounting hole with a diameter of 6-8 mm, for fixing the mounting bracket to the operating table with bolts. The surface of the support plate is provided with anti-slip texture, the width of which is 2-3 mm, to increase friction and prevent the mounting bracket from sliding.

[0014] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0015] In the scheme of this application:

[0016] The instrument employs a main locking unit and an auxiliary locking unit. The main locking unit secures the instrument's position through the engagement of a locking rod with a locking groove, while the auxiliary locking unit clamps the transmission components through the cooperation of a locking block and an elastic element. Together, they enhance the instrument's safety and stability. Even under high loads or accidental contact, the dual locking mechanism effectively prevents accidental triggering or structural loosening, thereby reducing safety risks during surgery.

[0017] The sliding adjustment mechanism allows doctors to flexibly adjust the position of the drive components according to surgical needs. The use of fastening bolts ensures that the adjusted position can be firmly fixed, reducing the frequency and time cost of manual adjustment.

[0018] The hollow design of the guide tube reduces the overall weight of the instrument, while the graduated markings allow doctors to precisely control the movement of the sliding rod, thus improving surgical accuracy. The sealing ring effectively prevents fluid from entering the guide tube, extending the instrument's lifespan.

[0019] The scalpel's curved blade design enhances cutting efficiency, while the wear-resistant coating improves its durability. The barbed structure of the suture needle enhances the suturing effect, reduces the likelihood of tissue tearing, and thus increases the success rate of the surgery.

[0020] In summary, this invention, through the synergistic design of multiple locking components, sliding adjustment components, guide tubes, and cutting components, solves the safety hazards and cumbersome operation problems of existing linear staplers due to their single locking mechanism, significantly improving the safety, stability, and ease of operation of the instrument, and meeting the needs of use in complex surgical environments. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the overall structure of this utility model.

[0022] Figure 2 This is a schematic diagram of the main locking unit structure of this utility model.

[0023] Figure 3 This is a schematic diagram of the auxiliary locking unit structure of this utility model.

[0024] Figure 4 This is a schematic diagram of the cutting component structure of this utility model.

[0025] The attached figures are labeled as follows:

[0026] 1. Drive assembly; 2. Cutting assembly; 3. Main locking unit; 4. Auxiliary locking unit; 5. Locking rod; 6. Locking groove; 7. Cheek teeth; 8. Protrusion; 9. Locking block; 10. Elastic element; 11. Limiting plate; 12. Sliding adjustment element; 13. Slide rail; 14. Slider; 15. Fastening bolt; 16. Cutting blade; 17. Sewing needle. Detailed Implementation

[0027] This utility model provides a linear stapler with multiple locking safety features, and its specific implementation is described in detail with reference to the accompanying drawings. Figure 1 As shown, the stapler includes a drive assembly 1, a cutting assembly 2, and a multi-locking assembly, wherein the multi-locking assembly consists of a main locking unit 3 and an auxiliary locking unit 4. The drive assembly 1 is connected to the cutting assembly 2 via a transmission component and is used to transmit operating force to complete tissue cutting and suturing. The mounting bracket is located on both sides of the drive assembly 1, and its interior is provided with a sliding adjustment component 12. The sliding adjustment component 12 achieves position adjustment through the cooperation of a slide rail 13 and a slider 14.

[0028] The main locking unit 3 is located at the front end of the drive assembly 1, and its structure is as follows: Figure 2 As shown, it includes a locking rod 5 and a locking groove 6. One end of the locking rod 5 is fixedly connected to the drive assembly 1, and the other end is embedded in the locking groove 6. The locking groove 6 is opened on the front end face of the mounting bracket, and its inner wall is provided with multiple locking teeth 7. The outer surface of the locking rod 5 is provided with protrusions 8 that match the locking teeth 7. The locking rod 5 is fixed in position by the engagement of the protrusions 8 and the locking teeth 7. This engagement structure ensures that the locking rod 5 will not loosen when subjected to external impact or accidental contact. The auxiliary locking unit 4 is located in the middle area of ​​the transmission component, and its structure is as follows. Figure 3As shown, the device includes a locking block 9, elastic elements 10, and a limiting plate 11. The locking block 9 is located in the middle region of the transmission component, and the limiting plate 11 is located on both sides of the transmission component and fixedly connected to the mounting bracket. Elastic elements 10 are provided at both ends of the locking block 9; one end of the elastic element 10 is welded to the end face of the locking block 9, and the other end is welded to the inner surface of the limiting plate 11. The welding points are polished to reduce stress concentration. The elastic elements 10 maintain a clamping state on the transmission component through tension, thereby further enhancing the stability of the device. The main locking unit 3 and the auxiliary locking unit 4 work together through a linkage; when the main locking unit 3 unlocks, the auxiliary locking unit 4 simultaneously releases its clamping state, thereby allowing the transmission component to move.

[0029] The drive assembly 1 includes a handle and a push rod. The handle and push rod are connected by a hinge shaft, with bearings at both ends of the hinge shaft. The outer rings of the bearings are fixedly connected to the mounting bracket. One end of the push rod is fixedly connected to the transmission component, and the other end is connected to the handle via a threaded connection. The grip portion of the handle has an anti-slip pad with multiple grooves 1-2 mm deep on its surface to increase friction and improve operational stability. The transmission component includes a hollow guide tube with a sliding rod inside. One end of the sliding rod is fixedly connected to the push rod, and the other end is fixedly connected to the cutting assembly 2. The outer surface of the guide tube has graduations indicating the travel distance of the sliding rod. Sealing rings made of silicone are located at both ends of the guide tube to prevent liquid from entering the interior of the guide tube.

[0030] The structure of the sliding adjustment member 12 is as follows Figure 2 As shown, the device includes a slide rail 13 and a slider 14. The slide rail 13 is fixedly mounted on the inner side of the mounting bracket, and the slider 14 is slidably connected to the slide rail 13. The top of the slider 14 has bolt holes, and fastening bolts 15 are installed in the bolt holes to fix the slider 14 to a specific position on the slide rail 13. The bottom of the slider 14 has connecting ears, which are connected to the drive assembly 1 via a pin. Locking nuts are provided at both ends of the pin to prevent the pin from loosening. This design allows the surgeon to flexibly adjust the position of the drive assembly 1 according to surgical needs and fix the adjusted position using the fastening bolts 15.

[0031] The structure of cutting component 2 is as follows Figure 4As shown, the device includes a cutting blade 16 and suture needles 17. The cutting blade 16 is positioned in front of the suture needles 17, and its blade is arc-shaped with a 0.1-0.2 mm thick abrasion-resistant coating. There are two rows of suture needles 17, located on either side of the cutting blade 16, with 6-8 needles in each row. The tips of the suture needles 17 have barbed structures at an angle of 30-45 degrees. This design enhances suturing effectiveness and reduces the possibility of tissue tearing. The bottom of the mounting bracket has a rectangular support plate with 6-8 mm diameter mounting holes at each of its four corners for securing the mounting bracket to the operating table with bolts. The surface of the support plate has 2-3 mm wide anti-slip grooves to increase friction and prevent the mounting bracket from slipping.

[0032] In actual use, the doctor first adjusts the position of the drive assembly 1 using the sliding adjustment piece 12 to adapt the stapler to the surgical requirements. After adjustment, the slider 14 is fixed to a specific position on the slide rail 13 using the fastening bolt 15. Then, the doctor grips the handle and applies operating force, which is transmitted to the transmission component via the push rod, thereby driving the cutting assembly 2 to complete the tissue cutting and suturing. During this process, the main locking unit 3 and the auxiliary locking unit 4 work together to ensure the safety and stability of the instrument. When unlocking is required, the doctor operates the main locking unit 3, causing the locking rod 5 to disengage from the locking groove 6, while the auxiliary locking unit 4 releases its clamping state on the transmission component, allowing the transmission component to move. The scale markings on the outer surface of the guide tube help the doctor precisely control the movement distance of the sliding rod, ensuring the accuracy of the surgery. The curved blade design of the cutter 16 improves cutting efficiency, while the barbed structure of the suture needle 17 enhances the suturing effect and reduces the possibility of tissue tearing. The support plate is fixed to the operating table through mounting holes, and the anti-slip texture design further increases the stability of the mounting bracket.

[0033] To enable those skilled in the art to fully understand and implement this utility model, the specific implementation principles of this utility model are further explained below in conjunction with specific application scenarios.

[0034] During the preoperative preparation phase, the surgeon first secures the support plate at the bottom of the mounting bracket to the operating table using bolts. Mounting holes at the four corners of the support plate ensure a firm connection to the operating table, while the anti-slip texture on the surface further prevents slippage due to external forces, thus ensuring the overall stability of the stapler. This design effectively avoids the risk of instrument displacement during surgery, laying the foundation for subsequent procedures.

[0035] Subsequently, the surgeon adjusts the position of the drive assembly 1 according to the surgical requirements. By operating the sliding adjustment piece 12, the slider 14 slides along the slide rail 13 to the appropriate position, and the fastening bolt 15 is tightened to secure the slider 14. At this point, the connecting lug at the bottom of the slider 14 is connected to the drive assembly 1 via a pin and is prevented from loosening by a locking nut, thus ensuring that the position of the drive assembly 1 is precisely locked. This step allows the stapler to adapt to different surgical scenarios while reducing the frequency and time cost of manual adjustments.

[0036] After the stapler is positioned, the doctor grips the handle and applies operating force. The push rod is connected to the handle via a hinge shaft. Bearings at both ends of the hinge shaft reduce frictional resistance during rotation, making the operation smoother. One end of the push rod is fixedly connected to the transmission component, and the other end is connected to the handle via a threaded connection, thus ensuring that the applied operating force is stably transmitted to the transmission component. During this process, the main locking unit 3 and the auxiliary locking unit 4 work together to ensure the safety and stability of the instrument. In the main locking unit 3, the locking rod 5 is embedded in the locking groove 6, and the protrusion 8 engages with the locking teeth 7 to form a fixed structure. This engagement method can maintain the locked state even under external impact or accidental contact. At the same time, the locking block 9 in the auxiliary locking unit 4 clamps the transmission component through the tension of the elastic element 10, further enhancing the overall stability of the instrument.

[0037] During the cutting and suturing stages, the operating force is transmitted to the cutting assembly 2 via a transmission component. This component includes a hollow guide tube with a sliding rod inside. One end of the sliding rod is fixedly connected to a push rod, and the other end is fixedly connected to the cutting assembly 2. Graduation marks on the outer surface of the guide tube help the surgeon precisely control the movement distance of the sliding rod, thereby ensuring the accuracy of the cutting depth and suturing position. Furthermore, the sealing rings at both ends of the guide tube are made of silicone, effectively preventing liquid from entering the guide tube and extending the instrument's lifespan.

[0038] The design of the cutting component 2 further enhances surgical outcomes. The cutting blade 16, positioned in front of the suture needles 17, features an arc-shaped cutting edge to improve cutting efficiency, while a wear-resistant coating on the blade surface enhances durability. The suture needles 17 are arranged in two rows of 6-8 needles each, with barbed tips at an angle of 30-45 degrees. This design not only improves suturing effectiveness but also significantly reduces the likelihood of tissue tearing, thereby increasing the success rate of the surgery.

[0039] When unlocking is required to reset or adjust the device, the physician operates the main locking unit 3, disengaging the locking lever 5 from the locking slot 6. At this time, the linkage causes the auxiliary locking unit 4 to simultaneously release its clamping grip on the transmission component, allowing the transmission component to move freely. This dual-locking mechanism effectively avoids the risk of accidental triggering or structural loosening, even under high loads or accidental contact, thus significantly improving the safety and reliability of the device.

[0040] In summary, this invention achieves efficient instrument operation in complex surgical environments through the coordinated design of multiple locking components, sliding adjustment parts, guide tubes, and cutting components. The above steps fully demonstrate how each component works collaboratively to solve problems existing in the prior art, reflecting the technical advantages and practical application value of this invention.

Claims

1. A linear stapler having a multiple lock safety, characterized by, The device includes a drive assembly (1), a cutting assembly (2), and a multi-locking assembly. The drive assembly (1) is connected to the cutting assembly (2) via a transmission component. The multi-locking assembly includes a main locking unit (3) and an auxiliary locking unit (4). The main locking unit (3) is located at the front end of the drive assembly (1), and the auxiliary locking unit (4) is located in the middle region of the transmission component. The main locking unit (3) and the auxiliary locking unit (4) work together through a linkage component. The drive assembly (1) has mounting brackets on both sides, and the mounting brackets have sliding adjustment components (12) inside.

2. The straight line stapler with multiple lockouts of claim 1, wherein, The main locking unit (3) includes a locking rod (5) and a locking groove (6). One end of the locking rod (5) is fixedly connected to the drive assembly (1), and the other end is embedded in the locking groove (6). The locking groove (6) is opened on the front end face of the mounting bracket. The inner wall of the locking groove (6) is provided with multiple teeth (7), and the outer surface of the locking rod (5) is provided with protrusions (8) that match the teeth (7).

3. The straight line stapler with multiple lockouts of claim 1 wherein, The auxiliary locking unit (4) includes a locking block (9) and a limiting plate (11). The locking block (9) is located in the middle region of the transmission component. The limiting plate (11) is located on both sides of the transmission component and is fixedly connected to the mounting bracket. The locking block (9) has elastic elements (10) at both ends. One end of the elastic element (10) is fixedly connected to the locking block (9), and the other end is fixedly connected to the limiting plate (11).

4. The straight line stapler with multiple lockouts of claim 1 wherein, The drive assembly (1) includes a handle and a push rod. The handle and the push rod are connected by a hinge shaft. Bearings are provided at both ends of the hinge shaft. The outer ring of the bearing is fixedly connected to the mounting bracket. One end of the push rod is fixedly connected to the transmission component, and the other end is connected to the handle by a threaded connection.

5. The straight line stapler with multiple lockouts of claim 1 wherein, The transmission component includes a hollow guide tube with a sliding rod inside. One end of the sliding rod is fixedly connected to the push rod, and the other end is fixedly connected to the cutting component (2). The outer surface of the guide tube is marked with scale marks, and both ends of the guide tube are equipped with sealing rings.

6. The straight line stapler with multiple lockouts of claim 1 wherein, The cutting assembly (2) includes a cutting blade (16) and a suture needle (17). The cutting blade (16) is located in front of the suture needle (17). The blade of the cutting blade (16) is arc-shaped and coated with a wear-resistant coating. There are two rows of suture needles (17), with 6 to 8 suture needles in each row. The tip of the suture needle (17) is provided with a barb structure.

7. The straight line stapler with multiple lockouts of claim 1 wherein, The sliding adjustment component (12) includes a slide rail (13) and a slider (14). The slide rail (13) is fixedly installed on the inner side of the mounting bracket. The slider (14) is slidably connected to the slide rail (13). The top of the slider (14) is provided with a bolt hole, and a fastening bolt (15) is provided in the bolt hole. The bottom of the slider (14) is provided with a connecting ear, and the connecting ear is connected to the drive assembly (1) through a pin.

8. The straight line stapler with multiple lockouts of claim 3, wherein, The elastic element (10) is a spring made of stainless steel. One end of the spring is welded to the end face of the locking block (9), and the other end is welded to the inner side of the limiting plate (11).

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