A cutting clamp mechanism for spring tube machining of minimally invasive medical instruments

Abstract

The utility model relates to spring tube processing technical field especially a kind of cutting clamping mechanism for the spring tube processing of minimally invasive medical instrument, including fixed disc, sleeve and fixed assembly, the sleeve is fixedly connected at fixed disc end, sleeve outer wall is equipped with screw hole, fixed assembly includes hinged seat, and the pressing plate of rotationally connected in the inner wall of hinged seat, adjusting screw rod, limit ring and rubber plate, adjusting hole is equipped in the pressing plate top. In the utility model, device, fixed assembly is rotated by adjusting screw rod and drives pressing plate, so that rubber plate is pressed from outside spring tube, and the friction between rubber plate and spring tube is used to prevent spring tube from rotating;Meanwhile, by the structure cooperation of bidirectional screw rod, extruding block and bracing plate etc. inside, bracing plate is braced from inside spring tube, this inside and outside combined fixing mode, compared with traditional single fixing mode, can limit the movement and rotation of spring tube, guarantee the stability of spring tube in processing process, improve the processing precision and quality of spring tube.

Description

Technical Field

[0001] This utility model relates to the field of spring tube processing technology, and more specifically, to a cutting and clamping mechanism for processing spring tubes for minimally invasive medical devices. Background Technology

[0002] Minimally invasive medical devices refer to medical devices used in minimally invasive surgery. Minimally invasive surgery is a technique that uses special instruments and equipment (such as gastroscopes and colonoscopes) to perform surgical procedures through tiny incisions or natural body cavities. It has the advantages of minimal trauma, less pain, and faster recovery. Minimally invasive medical devices are key tools for minimally invasive surgery. Common minimally invasive medical devices include gastroscope and colonoscope consumables. Among these consumables, the spring tube, as one of the key components of the handle, directly affects the instrument's operational flexibility and safety.

[0003] In the prior art, such as in document CN219542895U, a clamping device for fixing and machining spring tubes is specifically disclosed. This device improves the stability of clamping the spring tube body through an inner circle supporting mechanism and a pressing and fixing mechanism, preventing displacement of the spring tube body in various directions during machining. The inner circle supporting mechanism determines the center of the spring tube body to prevent vertical offset, while the pressing and fixing mechanism compresses and fixes the spring tube body, preventing deformation caused by its own elasticity from affecting machining. This device employs a dual fixing mechanism: on the one hand, the inner circle supporting mechanism applies support force from the inside of the spring tube outward; on the other hand, it compresses and fixes the spring tube through end compression. However, this fixing method still has shortcomings in actual machining. Since the spring tube is sleeved on an elastic support, it is prone to rotation due to external forces during machining. This phenomenon directly leads to a decrease in machining accuracy and affects the machining quality of the spring tube. Utility Model Content

[0004] Based on the aforementioned technical problem that the spring tube is prone to rotation due to external force under traditional clamping methods, resulting in a decrease in processing accuracy, this utility model proposes a cutting and clamping mechanism for processing spring tubes for minimally invasive medical devices.

[0005] This utility model proposes a cutting and clamping mechanism for processing spring tubes for minimally invasive medical devices, including a fixed plate, a sleeve, and a fixing assembly. The sleeve is fixedly connected to the end of the fixed plate, and a screw hole is provided on the outer wall of the sleeve.

[0006] The fixing assembly includes a hinge seat, a pressure plate, an adjusting screw, a limiting ring, and a rubber plate that are rotatably connected to the inner wall of the hinge seat. The pressure plate has an adjusting hole at its top, the end of the adjusting screw passes through the adjusting hole and extends below it, the end of the adjusting screw is threadedly connected to the screw hole, the limiting ring is fixedly connected to the outer wall of the adjusting screw, and the rubber plate is fixedly connected to the bottom of the pressure plate.

[0007] Preferably, the inner wall of the sleeve has two through holes, and a support plate is slidably connected to the inner wall of the through holes.

[0008] Preferably, the inner wall of the sleeve is fixedly connected to two fixed frames, the outer wall of each fixed frame is provided with two sliding holes, the inner wall of each sliding hole is fixedly connected to a sliding rod, the outer wall of each sliding rod is sleeved with a spring, the outer wall of each sliding rod is slidably connected to a connecting plate, and the end of the connecting plate is fixedly connected to a support plate.

[0009] Preferably, one end of the spring is fixedly connected to the connecting plate, and the other end of the spring is fixedly connected to the fixed frame.

[0010] Preferably, the support plate has a first arc surface on its outer side and an arc-shaped protrusion on its inner side.

[0011] Preferably, the inner wall of the sleeve is rotatably connected to a bidirectional threaded rod, the end of which extends to the outside of the sleeve, and a knob is fixedly connected to the outer end of the bidirectional threaded rod.

[0012] Preferably, the inner wall of the sleeve is provided with multiple limiting grooves, and two symmetrical extrusion blocks are provided inside the sleeve. Limiting blocks are fixedly connected to both sides of the extrusion blocks, and the ends of the limiting blocks are slidably connected to the inner walls of the corresponding limiting grooves. The two ends of the bidirectional threaded rod pass through the extrusion blocks and are threadedly connected to them.

[0013] Preferably, each of the extrusion blocks has a second arc surface on the side facing the protrusion, and when the two extrusion blocks move toward each other, they slide and extrude through the second arc surface.

[0014] The beneficial effects of this utility model, achieved through the above technical solution, are as follows:

[0015] 1. In this device, the fixing component drives the pressure plate to rotate through the adjusting screw, so that the rubber plate presses the spring tube from the outside, and the friction between the rubber plate and the spring tube prevents the spring tube from rotating. At the same time, the internal structure, through the cooperation of bidirectional threaded rod, extrusion block and support plate, makes the support plate press the spring tube from the inside. This combination of internal and external fixing method, compared with the traditional single fixing method, can restrict the movement and rotation of the spring tube, ensure the stability of the spring tube during processing, and improve the processing accuracy and quality of the spring tube.

[0016] 2. The first arc surface of the support plate is adapted to the shape of the inner wall of the spring tube, which can better fit the inner wall of the spring tube, increase the contact area, improve the support effect, and at the same time avoid the outer edge of the support plate from squeezing the spring tube, causing indentations on the tube and affecting its use. The design of the protrusion facilitates the cooperation with the second arc surface of the extrusion block. When the extrusion block moves, the sliding extrusion of the two facilitates the pushing of the support plate outward, thereby achieving internal support of the spring tube. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0018] Figure 2 This is a schematic diagram of the installation structure of the extrusion block of this utility model;

[0019] Figure 3 This is a schematic diagram of the internal structure of the sleeve of this utility model;

[0020] Figure 4 This is a schematic diagram of the installation structure of the pressure plate of this utility model;

[0021] Figure 5 This is a schematic diagram of the installation structure of the connecting plate of this utility model.

[0022] In the diagram: 1. Fixed plate; 2. Sleeve; 3. Through hole; 4. Limiting groove; 5. Screw hole; 6. Support plate; 7. Protrusion; 8. First arc surface; 9. Connecting plate; 10. Two-way threaded rod; 11. Knob; 12. Extrusion block; 13. Second arc surface; 14. Limiting block; 15. Fixed frame; 16. Sliding hole; 17. Sliding rod; 171. Spring; 18. Hinge seat; 19. Pressure plate; 20. Rubber plate; 21. Adjusting hole; 22. Adjusting screw; 23. Limiting ring. Detailed Implementation

[0023] Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0024] In this utility model, unless otherwise explicitly specified and limited, the term "fixed connection" should be interpreted broadly. For example, "fixed connection" can mean fixed installation, detachable connection, or integral connection; it can mean mechanical connection or electrical connection; it can mean direct connection. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0025] like Figures 1-4 As shown, a cutting and clamping mechanism for processing spring tubes for minimally invasive medical devices includes a fixed plate 1, a sleeve 2 and a fixing assembly. The sleeve 2 is fixedly connected to the end of the fixed plate 1, and a screw hole 5 is provided on the outer wall of the sleeve 2.

[0026] The fixing assembly includes a hinge seat 18, a pressure plate 19 rotatably connected to the inner wall of the hinge seat 18, an adjusting screw 22, a limiting ring 23, and a rubber plate 20. The top of the pressure plate 19 has an adjusting hole 21. The end of the adjusting screw 22 passes through the adjusting hole 21 and extends below it. The end of the adjusting screw 22 is threadedly connected to the screw hole 5. The limiting ring 23 is fixedly connected to the outer wall of the adjusting screw 22. The rubber plate 20 is fixedly connected to the bottom of the pressure plate 19.

[0027] The sleeve 2 is used to place the spring tube. The screw hole 5 cooperates with the adjusting screw 22 to realize the angle adjustment of the pressure plate 19 and the clamping of the spring tube. The fixing assembly composed of the hinge seat 18, pressure plate 19, adjusting screw 22, limit ring 23 and rubber plate 20 can drive the pressure plate 19 to rotate by rotating the adjusting screw 22, so that the rubber plate 20 clamps the spring tube from the outside and prevents the spring tube from rotating due to external force during processing. Compared with the traditional fixing method, it improves the stability and processing accuracy of the spring tube fixing.

[0028] In this embodiment, as Figure 2 and Figure 5 As shown, the inner wall of the sleeve 2 has two through holes 3, and the inner wall of the through holes 3 is slidably connected to a support plate 6. The inner wall of the sleeve 2 is fixedly connected to two fixed frames 15. The outer wall of each fixed frame 15 has two sliding holes 16, and the inner wall of each sliding hole 16 is fixedly connected to a sliding rod 17. The outer wall of each sliding rod 17 is fitted with a spring 171, and the outer wall of each sliding rod 17 is slidably connected to a connecting plate 9. The end of the connecting plate 9 is fixedly connected to the support plate 6, one end of the spring 171 is fixedly connected to the connecting plate 9, and the other end of the spring 171 is fixedly connected to the fixed frame 15.

[0029] The through hole 3 provides a channel for the movement of the support plate 6, allowing the support plate 6 to slide along the through hole 3 inside the sleeve 2, thereby achieving the tightening and loosening action inside the spring tube and providing a structural basis for the internal positioning of the spring tube.

[0030] In this embodiment, as Figure 2 As shown, the outer side of the support plate 6 has a first arc surface 8, and the inner side of the support plate 6 has an arc-shaped protrusion 7.

[0031] Each of the extrusion blocks 12 has a second arc surface 13 on the side facing the protrusion 7. When the two extrusion blocks 12 move toward each other, they slide and extrude the protrusion 7 through the second arc surface 13.

[0032] The first arc surface 8 of the support plate 6 is adapted to the shape of the inner wall of the spring tube, which can better fit the inner wall of the spring tube, increase the contact area, and improve the support effect. The design of the protrusion 7 makes it easy to cooperate with the second arc surface 13 of the extrusion block 12. When the extrusion block 12 moves, the sliding extrusion of the two facilitates the push of the support plate 6 to move outward, thereby achieving internal support of the spring tube.

[0033] In this embodiment, as Figure 2 As shown, a bidirectional threaded rod 10 is rotatably connected to the inner wall of the sleeve 2. The end of the bidirectional threaded rod 10 extends to the outside of the sleeve 2. A knob 11 is fixedly connected to the outer end of the bidirectional threaded rod 10. Multiple limiting grooves 4 are opened on the inner wall of the sleeve 2. Two symmetrical extrusion blocks 12 are provided inside the sleeve 2. Limiting blocks 14 are fixedly connected to both sides of the extrusion blocks 12. The ends of the limiting blocks 14 are slidably connected to the inner wall of the corresponding limiting grooves 4. The two ends of the bidirectional threaded rod 10 pass through the extrusion blocks 12 and are threadedly connected to them.

[0034] The bidirectional threaded rod 10 and the knob 11 form a driving structure. Rotating the knob 11 can drive the bidirectional threaded rod 10 to rotate, thereby driving the two extrusion blocks 12 to move towards or away from each other, thus realizing the control of the support plate 6.

[0035] The limiting groove 4 and the limiting block 14 cooperate to limit and guide the movement of the extrusion block 12, preventing the extrusion block 12 from shifting or rotating during movement, ensuring that the extrusion block 12 can move smoothly along the predetermined direction, so that the support plate 6 can be evenly stressed and stably internally support the spring tube.

[0036] Working principle: When using the cutting and clamping mechanism for processing the spring tube of the minimally invasive medical device disclosed in this application, the spring tube is first put on the sleeve 2. The knob 11 is turned to drive the bidirectional threaded rod 10 to rotate. The two extrusion blocks 12 will move towards each other along the bidirectional threaded rod 10. The second arc surface 13 on the extrusion block 12 contacts and slides and extrudes the protrusion 7 of the support plate 6, pushing the support plate 6 to slide outward along the through hole 3. The first arc surface 8 on the outer side of the support plate 6 fits against the inner wall of the spring tube, and the spring tube is tightened and positioned from the inside.

[0037] Next, rotate the adjusting screw 22. The end of the adjusting screw 22 is threaded into the screw hole 5. As the adjusting screw 22 rotates, it moves up and down in the screw hole 5, causing the pressure plate 19 to rotate around the hinge seat 18. The rubber plate 20 at the bottom of the pressure plate 19 presses against the outer wall of the spring tube. Through the mutual pressing of the rubber plate 20 and the support plate 6, the spring tube is pressed tightly onto the sleeve 2, thus achieving external fixation of the spring tube.

[0038] During processing, the support plate 6 provides continuous support force to ensure that the support plate 6 fits tightly against the inner wall of the spring tube; at the same time, the rubber plate 20 relies on friction to prevent the spring tube from rotating under the action of external forces, thereby keeping the spring tube stable during processing and ensuring the accuracy of cutting and other processing operations.

[0039] The above are merely preferred embodiments of this utility model, but the scope of protection of this utility model is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in this utility model, based on the technical solution and inventive concept of this utility model, should be included within the scope of protection of this utility model.

Claims

1. A cutting and clamping mechanism for processing spring tubes for minimally invasive medical devices, characterized in that, include: Fixed disk (1); A sleeve (2) is fixedly connected to the end of a fixed disk (1), and a screw hole (5) is provided on the outer wall of the sleeve (2); Fixed components, including: A hinge (18) and a pressure plate (19) rotatably connected to its inner wall, wherein the pressure plate (19) has an adjustment hole (21) on its top; An adjusting screw (22) is provided, the end of which passes through the adjusting hole (21) and extends below it, and the end of the adjusting screw (22) is threadedly connected to the screw hole (5). A limiting ring (23) is fixedly connected to the outer wall of the adjusting screw (22); A rubber sheet (20) is fixedly connected to the bottom of a pressure plate (19).

2. The cutting and clamping mechanism for processing spring tubes for minimally invasive medical devices according to claim 1, characterized in that: The inner wall of the sleeve (2) has two through holes (3), and the inner wall of the through holes (3) is slidably connected to a support plate (6).

3. The cutting and clamping mechanism for processing spring tubes for minimally invasive medical devices according to claim 2, characterized in that: The inner wall of the sleeve (2) is fixedly connected to two fixed frames (15). The outer wall of each fixed frame (15) has two sliding holes (16). The inner wall of each sliding hole (16) is fixedly connected to a sliding rod (17). The outer wall of each sliding rod (17) is fitted with a spring (171). The outer wall of each sliding rod (17) is slidably connected to a connecting plate (9). The end of the connecting plate (9) is fixedly connected to the support plate (6).

4. The cutting and clamping mechanism for processing spring tubes for minimally invasive medical devices according to claim 3, characterized in that: One end of the spring (171) is fixedly connected to the connecting plate (9), and the other end of the spring (171) is fixedly connected to the fixing frame (15).

5. The cutting and clamping mechanism for processing spring tubes for minimally invasive medical devices according to claim 4, characterized in that: The support plate (6) has a first arc surface (8) on its outer side, and the support plate (6) has an arc-shaped protrusion (7) protruding inward on its inner side.

6. The cutting and clamping mechanism for processing spring tubes for minimally invasive medical devices according to claim 5, characterized in that: The inner wall of the sleeve (2) is rotatably connected to a bidirectional threaded rod (10), the end of which extends to the outside of the sleeve (2), and a knob (11) is fixedly connected to the outer end of the bidirectional threaded rod (10).

7. The cutting and clamping mechanism for processing spring tubes for minimally invasive medical devices according to claim 6, characterized in that: The inner wall of the sleeve (2) is provided with multiple limiting grooves (4), and two symmetrical extrusion blocks (12) are provided inside the sleeve (2). Limiting blocks (14) are fixedly connected to both sides of the extrusion blocks (12). The ends of the limiting blocks (14) are slidably connected to the inner wall of the corresponding limiting grooves (4). The two ends of the bidirectional threaded rod (10) pass through the extrusion blocks (12) and are threadedly connected to them.

8. The cutting and clamping mechanism for processing spring tubes for minimally invasive medical devices according to claim 7, characterized in that: Each of the extrusion blocks (12) has a second arc surface (13) on the side facing the protrusion (7). When the two extrusion blocks (12) move towards each other, they slide and extrude through the second arc surface (13) and the protrusion (7).

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