Flaring device for a trocar
By combining a servo motor and cylinder drive structure with a detachable mold design, the problem of poor sleeve fixation is solved, achieving high-precision and efficient flaring processing, adapting to sleeves of different sizes, and improving the adaptability and working efficiency of the device.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- CHANGZHOU RUKANG BIOTECHNOLOGY CO LTD
- Filing Date
- 2025-07-09
- Publication Date
- 2026-06-19
AI Technical Summary
Existing trocar cannula flaring devices have poor fixation during use, causing cannula position to shift, affecting flaring accuracy, and are difficult to adapt to cannulas of different sizes.
The system employs a combination structure of a servo motor-driven bidirectional lead screw and a cylinder-driven connecting plate to achieve automatic fixing and flaring of the sleeve. It is equipped with a detachable flaring mold to accommodate different sizes, and combines a V-shaped rubber placement plate and a fixing plate to improve the fixing effect.
It improves the accuracy and adaptability of the flaring, reduces manual operation, increases work efficiency and device flexibility, and enhances the fixing effect on the sleeve.
Smart Images
Figure CN224374872U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the field of cannula flaring technology, specifically a flaring device for a puncture instrument cannula. Background Technology
[0002] A puncture device is a medical instrument widely used in minimally invasive surgery. It is mainly used to create a channel in human tissue to allow other surgical instruments to be introduced into the body for operation. Its core function is to penetrate the abdominal wall, chest wall and other tissues through puncture to form a stable passage, while avoiding damage to the tissues around the channel and maintaining the isolation between the body and the outside world.
[0003] The trocar cannula is an important component of the trocar. It is usually a hollow tubular structure with a larger opening at one end for connecting other parts of the trocar, and a sharper end or one with a special puncture structure to facilitate tissue penetration. Therefore, the end of the cannula needs to be flared during production.
[0004] Existing flaring devices for trocars do not provide good fixation of the cannula during use. The cannula is prone to displacement during flaring, which reduces the accuracy of flaring and makes it difficult to fix cannulas of different sizes.
[0005] Therefore, this utility model provides a flaring device for the cannula of a puncture device. Utility Model Content
[0006] In order to overcome the shortcomings of the prior art, at least one technical problem raised in the background art is solved.
[0007] The technical solution adopted by this utility model to solve its technical problem is as follows: A flaring device for a puncture tube, comprising a base plate; a support platform fixedly connected to the top of the base plate, and the support platform being positioned near the end of the base plate; a placement plate provided on the top of the support platform; two symmetrically arranged side plates fixedly connected to the top of the support platform; a servo motor fixedly connected to the outer wall of the side plate; a bidirectional lead screw rotatably connected to the inner wall of the side plate, and the bidirectional lead screw being connected to the output end of the servo motor; two symmetrically arranged connecting blocks threadedly connected to the middle of the bidirectional lead screw; a connecting frame rotatably connected to the side wall of the connecting block; a connecting seat rotatably connected to the end of the connecting frame; a first connecting plate fixedly connected to the bottom of the connecting seat; and a fixing plate fixedly connected to the bottom of the first connecting plate. Through the above structure, the tube can be effectively fixed, reducing deviations in parameters such as flaring diameter, angle, and wall thickness caused by tube shaking.
[0008] Preferably, an adjustment component is fixedly connected to the top end of the base plate away from the support platform; a vertical plate is fixedly connected to the top of the adjustment component; a cylinder is fixedly connected to the side wall of the vertical plate, and the cylinder is located away from the support platform; a second connecting plate is fixedly connected to the output end of the cylinder; a first screw is fixedly connected to the side wall of the second connecting plate; the end of the first screw away from the second connecting plate is threaded; a connecting cylinder is threaded to the middle of the first screw; a flaring mold is fixedly connected to the end of the connecting cylinder; with the above structure, the sleeve can be automatically flared, and the flaring mold is detachable, making it convenient to replace different types of flaring molds.
[0009] Preferably, the top of the support platform has a groove; the placement plate is installed inside the groove; the top of the first connecting plate has two symmetrically arranged positioning holes; a second screw is slidably connected inside the positioning holes; the second screw is fixed to the top of the fixing plate; a nut is threadedly connected to the middle of the second screw; the nut contacts the top of the first connecting plate; with the above structure, the placement plate and the fixing plate can be quickly removed from the device, which is convenient for staff to maintain and replace them.
[0010] Preferably, the side plate has two symmetrically arranged sliding grooves on its side wall; a first guide rod is slidably connected inside the sliding groove; the end of the first guide rod is fixed to the side wall of the first connecting plate; a first positioning block is fixed to the end of the first guide rod away from the first connecting plate; with the above structure, the first guide rod can effectively guide the first connecting plate and reduce the shaking that occurs during the movement of the first connecting plate.
[0011] Preferably, the adjustment assembly includes a support plate; the support plate is fixed to the bottom of the upright plate; two sets of symmetrically arranged electric actuators are fixed to the bottom of the support plate; the electric actuators are fixed to the top of the base plate; through the above structure, the position and height of the flaring mold can be effectively adjusted so that it can better match the position and height of the sleeve.
[0012] Preferably, the side wall of the upright plate is slidably connected to two symmetrically arranged second guide rods; the ends of the second guide rods are fixed to the side wall of the second connecting plate; a second limiting block is fixed to the end of the second guide rod away from the second connecting plate; through the above structure, the second guide rods can effectively guide the second connecting plate, making the second connecting plate more stable during movement.
[0013] Preferably, both the placement plate and the fixing plate are V-shaped; the outer surfaces of both the placement plate and the fixing plate are made of rubber. With the above structure, the placement plate and the fixing plate can better adapt to the shape of the sleeve, thereby improving the fixing effect of the sleeve and reducing wear on the sleeve.
[0014] The beneficial effects of this utility model are as follows:
[0015] 1. The flaring device for a puncture tube described in this utility model, by activating a servo motor, drives a bidirectional lead screw to rotate on the side wall of a side plate. Simultaneously, the rotation of the bidirectional lead screw causes the connecting block to move. As the connecting block moves, a connecting frame rotates on the side wall of the connecting block. This rotation of the connecting frame, in turn, moves the fixing plate at the bottom of the first connecting plate. This structure effectively fixes the tube, reducing deviations in parameters such as flaring diameter, angle, and wall thickness caused by tube swaying, thereby improving flaring accuracy. Furthermore, this structure can adapt to tubes of different sizes, effectively improving the adaptability of the device.
[0016] 2. The flaring device for a puncture cannula described in this utility model uses a starting cylinder to drive a second connecting plate to move. The movement of the second connecting plate, in turn, moves the flaring mold to perform the flaring operation. When flaring cannulas of different sizes, a corresponding flaring mold is required. The structure of rotating the connecting cylinder to remove it from the first screw can automatically flare the cannula, reducing manual flaring and greatly improving work efficiency. Furthermore, the flaring mold is detachable, making it easy to replace different models of flaring molds, effectively improving the adaptability and flexibility of the device. Attached Figure Description
[0017] The present invention will be further described below with reference to the accompanying drawings.
[0018] Figure 1 This is a perspective view of the present invention;
[0019] Figure 2 This is a schematic diagram of the structure of the second screw in this utility model;
[0020] Figure 3 This is a schematic diagram of the structure of the first screw in this utility model;
[0021] Figure 4 This is a schematic diagram of the groove structure in this utility model.
[0022] In the diagram: 1. Base plate; 11. Support platform; 12. Placement plate; 13. Side plate; 14. Servo motor; 15. Two-way lead screw; 16. Connecting block; 17. Connecting frame; 18. Connecting seat; 19. First connecting plate; 111. Fixing plate; 2. Vertical plate; 21. Cylinder; 22. Second connecting plate; 23. First screw; 24. Connecting cylinder; 25. Flaring mold; 26. Adjustment component; 3. Groove; 31. Positioning hole; 32. Second screw; 33. Nut; 4. Slide groove; 41. First guide rod; 42. First positioning block; 5. Support plate; 51. Electric actuator; 6. Second guide rod; 61. Second limit block. 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] Specific implementation examples are given below.
[0025] like Figure 1 , Figure 2 and Figure 4As shown in the embodiment of this utility model, a flaring device for a trocar cannula includes a base plate 1; a support platform 11 is fixedly connected to the top of the base plate 1, and the support platform 11 is located near the end of the base plate 1; a placement plate 12 is provided on the top of the support platform 11; two symmetrically arranged side plates 13 are fixedly connected to the top of the support platform 11; a servo motor 14 is fixedly connected to the outer side wall of the side plate 13; a bidirectional lead screw 15 is rotatably connected to the inner side wall of the side plate 13, and the bidirectional lead screw 15 is connected to the output end of the servo motor 14; two symmetrically arranged connecting blocks 16 are threadedly connected to the middle of the bidirectional lead screw 15; a connecting frame 17 is rotatably connected to the side wall of the connecting block 16; a connecting seat 18 is rotatably connected to the end of the connecting frame 17; a first connecting plate 19 is fixedly connected to the bottom of the connecting seat 18; the first connecting plate 19... A fixing plate 111 is fixedly attached to the bottom of the device. During operation, the sleeve is placed on top of the placement plate 12, and the servo motor 14 is started. The servo motor 14 drives the bidirectional lead screw 15 to rotate on the side wall of the side plate 13. While the bidirectional lead screw 15 rotates, it drives the connecting block 16 to move. When the connecting block 16 moves, the connecting frame 17 will rotate on the side wall of the connecting block 16. The rotation of the connecting frame 17 drives the fixing plate 111 at the bottom of the first connecting plate 19 to move. The fixing plate 111 and the placement plate 12 cooperate to fix the sleeve. Through the above structure, the sleeve can be effectively fixed, reducing the deviation of parameters such as flaring diameter, angle, and wall thickness caused by sleeve shaking, thereby improving the flaring accuracy. At the same time, this structure can also adapt to sleeves of different sizes, effectively improving the adaptability of the device.
[0026] like Figure 1 and Figure 3 As shown, an adjusting assembly 26 is fixedly connected to the top of the base plate 1 at the end away from the support platform 11; a vertical plate 2 is fixedly connected to the top of the adjusting assembly 26; a cylinder 21 is fixedly connected to the side wall of the vertical plate 2, and the cylinder 21 is located away from the support platform 11; a second connecting plate 22 is fixedly connected to the output end of the cylinder 21; a first screw 23 is fixedly connected to the side wall of the second connecting plate 22; a thread is provided at the end of the first screw 23 away from the second connecting plate 22; a connecting cylinder 24 is threaded to the middle of the first screw 23; a flared mold 25 is fixedly connected to the end of the connecting cylinder 24; during operation, the cylinder 21 is activated, and the cylinder 21 drives the first screw 26 to the side wall of the support platform 11. The second connecting plate 22 moves, thereby moving the flaring mold 25 to perform flaring operations. When flaring different sized sleeves, the corresponding flaring mold 25 is required. By rotating the connecting cylinder 24 and removing it from the first screw 23, the flaring mold 25 can be disassembled. Through the above structure, the sleeve can be automatically flared, reducing the need for manual flaring and greatly improving work efficiency. Furthermore, the flaring mold 25 is detachable, making it easy to replace different models of flaring molds 25, effectively improving the adaptability and flexibility of the device.
[0027] like Figure 2 and Figure 4 As shown, the top of the support platform 11 has a groove 3; the placement plate 12 is installed inside the groove 3; the top of the first connecting plate 19 has two symmetrically arranged positioning holes 31; a second screw 32 is slidably connected inside the positioning holes 31; the second screw 32 is fixed to the top of the fixing plate 111; a nut 33 is threadedly connected to the middle of the second screw 32; the nut 33 contacts the top of the first connecting plate 19; during operation, when the placement plate 12 and the fixing plate 111 are damaged, the placement plate 12 is slid to remove it from the groove 3, the nut 33 is rotated to remove it from the middle of the second screw 32, and then the fixing plate 111 is slid to pull the second screw 32 out of the positioning holes 31, thus removing the fixing plate 111. Through the above structure, the placement plate 12 and the fixing plate 111 can be quickly removed from the device, which is convenient for workers to maintain and replace, greatly improving the convenience and flexibility of the device.
[0028] like Figure 1 and Figure 2 As shown, the side wall of the side plate 13 has two symmetrically arranged sliding grooves 4; a first guide rod 41 is slidably connected inside the sliding groove 4; the end of the first guide rod 41 is fixed to the side wall of the first connecting plate 19; a first positioning block 42 is fixed to the end of the first guide rod 41 away from the first connecting plate 19; during operation, when the first connecting plate 19 moves, the first connecting plate 19 will drive the first guide rod 41 to slide inside the sliding groove 4. Through the above structure, the first guide rod 41 can effectively guide the first connecting plate 19, reduce the shaking of the first connecting plate 19 during movement, and thus improve the stability of the overall structure of the device.
[0029] like Figure 1 and Figure 3 As shown, the adjustment assembly 26 includes a support plate 5; the support plate 5 is fixed to the bottom of the upright plate 2; two sets of symmetrically arranged electric actuators 51 are fixed to the bottom of the support plate 5; the electric actuators 51 are fixed to the top of the base plate 1; during operation, the electric actuators 51 are activated, and the electric actuators 51 drive the support plate 5 to move, and the movement of the support plate 5 drives the flaring mold 25 on its top to move. Through the above structure, the position and height of the flaring mold 25 can be effectively adjusted so that it can better match the position and height of the sleeve, thereby improving the accuracy of flaring.
[0030] like Figure 1 and Figure 3As shown, two symmetrically arranged second guide rods 6 are slidably connected to the side wall of the upright plate 2; the ends of the second guide rods 6 are fixed to the side wall of the second connecting plate 22; a second limiting block 61 is fixed to the end of the second guide rod 6 away from the second connecting plate 22; during operation, when the cylinder 21 drives the second connecting plate 22 to move, the second connecting plate 22 will drive the second guide rods 6 to slide on the upright plate 2, and the second limiting block 61 limits the sliding distance of the second guide rods 6. Through the above structure, the second guide rods 6 can effectively guide the second connecting plate 22, making the second connecting plate 22 more stable during movement, thereby improving the stability of the flaring mold 25 and making the flaring treatment effect of the sleeve better.
[0031] like Figure 1 , Figure 2 and Figure 4 As shown, both the placement plate 12 and the fixing plate 111 are V-shaped; the outer surfaces of both the placement plate 12 and the fixing plate 111 are made of rubber. During operation, the placement plate 12 and the fixing plate 111 are V-shaped with rubber as the outer material. Rubber is a relatively soft material. Through the above structure, the placement plate 12 and the fixing plate 111 can better adapt to the shape of the sleeve, thereby improving the fixing effect on the sleeve and reducing wear on the sleeve.
[0032] During operation, the sleeve is placed on top of the placement plate 12, and the servo motor 14 is started. The servo motor 14 drives the bidirectional lead screw 15 to rotate on the side wall of the side plate 13. Simultaneously, the bidirectional lead screw 15 rotates, causing the connecting block 16 to move. As the connecting block 16 moves, the connecting frame 17 rotates on the side wall of the connecting block 16. This rotation of the connecting frame 17 causes the fixing plate 111 at the bottom of the first connecting plate 19 to move. The fixing plate 111 and the placement plate 12 cooperate to fix the sleeve. This structure effectively fixes the sleeve, reducing deviations in parameters such as the flaring diameter, angle, and wall thickness caused by sleeve movement, thus improving the flaring accuracy. Furthermore, this structure can adapt to sleeves of different sizes, effectively improving the adaptability of the device. Upon activation, cylinder 21 is started, driving the second connecting plate 22 to move. The movement of the second connecting plate 22, in turn, moves the flaring mold 25, enabling it to perform flaring operations. When flaring different sized sleeves, corresponding flaring molds 25 are required. Rotating the connecting cylinder 24 removes it from the first screw 23, allowing the flaring mold 25 to be disassembled. This structure enables automatic flaring of sleeves, reducing manual flaring and significantly improving work efficiency. Furthermore, the flaring mold 25 is detachable, facilitating the replacement of different models, effectively improving the adaptability and flexibility of the device. If the placement plate 12 or the fixing plate 111 is damaged, the sliding placement plate 12 can be used to remove it. Remove it from the groove 3, rotate the nut 33 to remove it from the middle of the second screw 32, then slide the fixing plate 111 to pull the second screw 32 out of the positioning hole 31, and the fixing plate 111 can be removed. This structure allows for quick removal of the placement plate 12 and the fixing plate 111 from the device, facilitating maintenance and replacement by staff, greatly improving the convenience and flexibility of the device. When the first connecting plate 19 moves, it drives the first guide rod 41 to slide inside the groove 4. This structure effectively guides the first connecting plate 19, reducing wobbling during movement and improving the overall stability of the device. Qualitatively, the electric actuator 51 is activated, driving the support plate 5 to move. The movement of the support plate 5, in turn, moves the flaring mold 25 at its top. This structure effectively adjusts the position and height of the flaring mold 25, allowing it to better match the position and height of the sleeve, thus improving the accuracy of the flaring. When the cylinder 21 drives the second connecting plate 22 to move, the second connecting plate 22 causes the second guide rod 6 to slide on the vertical plate 2. The second limiting block 61 limits the sliding distance of the second guide rod 6. This structure effectively guides the second connecting plate 22, making its movement more stable and thus improving the stability of the flaring mold 25.This design improves the flaring effect on the sleeve. The placement plate 12 and fixing plate 111 are V-shaped, with the outer material being rubber. Rubber is a relatively soft material. Through this structure, the placement plate 12 and fixing plate 111 can better adapt to the shape of the sleeve, thereby improving the fixing effect and reducing wear on the sleeve.
[0033] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.
Claims
1. A device for flaring the cannula of a trocar, characterized in that: Includes a base plate (1); a support platform (11) is fixedly connected to the top of the base plate (1), and the support platform (11) is located near the end of the base plate (1); a placement plate (12) is provided on the top of the support platform (11); two symmetrically arranged side plates (13) are fixedly connected to the top of the support platform (11); a servo motor (14) is fixedly connected to the outer wall of the side plate (13); a bidirectional lead screw (15) is rotatably connected to the inner wall of the side plate (13), and the bidirectional lead screw (15) is rotatably connected to the inner wall of the side plate (13). The lead screw (15) is connected to the output end of the servo motor (14); the middle part of the bidirectional lead screw (15) is threaded with two symmetrically arranged connecting blocks (16); the side wall of the connecting block (16) is rotatably connected to a connecting frame (17); the end of the connecting frame (17) is rotatably connected to a connecting seat (18); the bottom of the connecting seat (18) is fixedly connected to a first connecting plate (19); the bottom of the first connecting plate (19) is fixedly connected to a fixing plate (111).
2. The flaring device for a trocar cannula according to claim 1, characterized in that: An adjustment assembly (26) is fixedly connected to the top of the base plate (1) at one end away from the support platform (11); a vertical plate (2) is fixedly connected to the top of the adjustment assembly (26); a cylinder (21) is fixedly connected to the side wall of the vertical plate (2), and the cylinder (21) is located away from the support platform (11); a second connecting plate (22) is fixedly connected to the output end of the cylinder (21); a first screw (23) is fixedly connected to the side wall of the second connecting plate (22); a thread is provided at one end of the first screw (23) away from the second connecting plate (22); a connecting cylinder (24) is threaded to the middle of the first screw (23); a flared mold (25) is fixedly connected to the end of the connecting cylinder (24).
3. The flaring device for a trocar cannula according to claim 1, characterized in that: The top of the support platform (11) is provided with a groove (3); the placement plate (12) is installed inside the groove (3); the top of the first connecting plate (19) is provided with two symmetrically arranged positioning holes (31); a second screw (32) is slidably connected inside the positioning hole (31); the second screw (32) is fixed to the top of the fixing plate (111); a nut (33) is threadedly connected to the middle of the second screw (32); the nut (33) is in contact with the top of the first connecting plate (19).
4. The flaring device for a trocar cannula according to claim 1, characterized in that: The side plate (13) has two symmetrically arranged sliding grooves (4) on its side wall; a first guide rod (41) is slidably connected inside the sliding groove (4); the end of the first guide rod (41) is fixed to the side wall of the first connecting plate (19); a first positioning block (42) is fixed to the end of the first guide rod (41) away from the first connecting plate (19).
5. The flaring device for a trocar cannula according to claim 2, characterized in that: The adjustment assembly (26) includes a support plate (5); the support plate (5) is fixed to the bottom of the upright plate (2); two sets of symmetrically arranged electric actuators (51) are fixed to the bottom of the support plate (5); the electric actuators (51) are fixed to the top of the base plate (1).
6. The flaring device for a trocar cannula according to claim 2, characterized in that: The side wall of the upright plate (2) is slidably connected to two symmetrically arranged second guide rods (6); the ends of the second guide rods (6) are fixed to the side wall of the second connecting plate (22); a second limiting block (61) is fixed to the end of the second guide rod (6) away from the second connecting plate (22).
7. The flaring device for a trocar cannula according to claim 1, characterized in that: Both the placement plate (12) and the fixing plate (111) are V-shaped; the exterior of both the placement plate (12) and the fixing plate (111) is made of rubber.