A needle sheath clamping claw bending system for a vascular suturing device

Abstract

The present invention discloses a needle sleeve claw bending system of a vascular suture device, which relates to the technical field of bending equipment. The present invention includes a universal bracket electron microscope, an air pump device and a needle sleeve body, and also includes: a claw bending device, the claw bending device includes a base, an R-axis manual fine-tuning angle rotating platform is fixedly installed on the base, a chuck base is also fixedly installed on the base through two support plates, and a hollow pneumatic three-jaw chuck is fixedly installed on the chuck base; three punch seats are installed on the hollow pneumatic three-jaw chuck, and each punch seat is installed with a punch that matches the needle sleeve body. The advantage is that the present invention can complete the bending process of the three claws on the needle sleeve at one time, and has a high bending consistency, effectively improving the bending effect and product assembly performance, and at the same time, there is no need to frequently take, place and adjust the needle sleeve during the bending process, the operation is convenient, and the problem of needle sleeve damage is avoided.

Description

Technical Field

[0001] The invention relates to the technical field of bending equipment, and in particular to a needle sleeve clamping claw bending system of a vascular suturing device. Background Art

[0002] A vascular suturing device is a commonly used hemostatic tool in medical surgery. It is used to suture blood vessels that have been damaged by puncture and other operations during surgery. It is usually equipped with a needle, a needle sleeve and suture thread. The needle sleeve is a small precision metal part, and its outer surface is processed by laser cutting into three-part claws, and the claws are bent by a jig. When assembled with the needle, an inverted anti-detachment structure can be formed by the step at the tip of the needle and the claw of the needle sleeve to prevent the needle and the needle sleeve from falling off during use.

[0003] The existing bending jig needs to bend the claws one by one. Due to the small size of the needle sleeve, it is inconvenient to place and operate the parts after each bending. It cannot be formed in one time, and the bending is difficult. In addition, during the bending process, tweezers and other tools need to be frequently used to pick up, place and adjust the position of the needle sleeve. The operation is cumbersome and there is a risk of damaging the needle sleeve.

[0004] Therefore, it is necessary to design a needle sleeve claw bending system for a vascular suturing device. Summary of the invention

[0005] In view of the deficiencies of the prior art, the present invention provides a needle sheath claw bending system of a vascular suturing device, which solves the problems raised in the above-mentioned background technology.

[0006] In order to achieve the above object, the present invention adopts the following technical solutions:

[0007] A needle sheath claw bending system for a vascular suturing device comprises a universal support electron microscope, an air pump device and a needle sheath body, and also comprises:

[0008] A jaw bending device, the jaw bending device comprising a base, an R-axis manual fine-tuning angle rotating platform is fixedly mounted on the base, a chuck base is also fixedly mounted on the base via two support plates, and a hollow pneumatic three-jaw chuck is fixedly mounted on the chuck base;

[0009] Three punch seats are installed on the hollow three-jaw pneumatic chuck, and each punch seat is installed with a punch that matches the needle sleeve body. The tip of the punch is designed with an angle, and the end of the angle away from the punch is in an arc shape that matches the arc of the needle sleeve body surface.

[0010] The R-axis manual fine-tuning angle rotating platform is threadedly connected with a support column, and a placement column matched with the needle sleeve body is fixedly installed on the support column, and the placement column is composed of a rod body 1 and a rod body 2, the rod body 1 is fixedly installed on the top of the support column, the rod body 2 is fixedly installed on the top of the rod body 1, and the diameter of the rod body 2 is smaller than the diameter of the rod body 1, and one end of the rod body 1 close to the rod body 2 is set as an inclined surface;

[0011] A plurality of movable grooves are evenly arranged on the side wall of the rod body 1, and a positioning block is slidably installed in each movable groove. A control component is installed between the support column and the rod body 1, and the control component cooperates with the plurality of positioning blocks.

[0012] Furthermore, a protective cover is fixedly mounted on the upper end of the chuck base, and the size of the protective cover is larger than that of the hollow three-jaw pneumatic chuck. A placement hole corresponding to the position of the placement column is opened on the top of the protective cover.

[0013] Furthermore, a guide sleeve is fixedly mounted on the chuck base, and a clearance fit is formed between the guide sleeve and the support column, and a round hole matching the guide sleeve is provided on the hollow pneumatic three-jaw chuck.

[0014] Furthermore, the punch seat and the punch are in interference fit, and a plurality of screw holes are provided on the side wall of the punch seat, each of the screw holes is threadedly connected with a screw in contact with the side wall of the punch.

[0015] Furthermore, a punch guide groove matching with a plurality of punches is fixedly mounted on the hollow pneumatic three-jaw chuck, and the punch guide groove is located at the upper end of the guide sleeve, and a through hole matching with the gap of the support column is provided on the punch guide groove.

[0016] Furthermore, the control component includes a rubber ring rotatably mounted on the upper end of the support column, a rotating ring is fixedly mounted on the bottom of the rubber ring, and a turntable is mounted on the inner wall of the rotating ring through a connecting mechanism, and a connecting rod is swingably mounted between the turntable and each positioning block.

[0017] Furthermore, the connection mechanism includes a fixing rod fixedly mounted on the inner wall of the rotating ring, and a rotating rod is fixedly mounted between the top of the fixing rod and the rotating disk.

[0018] Furthermore, the upper side wall of the support column is provided with a rotation groove which is rotatably matched with the rotating ring, and both ends of the connecting rod are rotatably connected to the rotating disk and the positioning block through a rotating shaft.

[0019] Furthermore, the positioning block and the movable groove are both in a square shape, and a surface of the positioning block away from the connecting rod is in an arc shape.

[0020] Compared with the prior art, the present invention has the following advantages:

[0021] 1: The needle sleeve jaw bending system has the advantage of one-time bending and forming. Specifically, through the cooperation of the hollow three-jaw pneumatic chuck and multiple punches, the three jaws on the needle sleeve can be bent at one time, and it has high bending consistency.

[0022] 2: The needle sleeve claw bending system has the advantages of simple operation and avoiding damage to the needle sleeve. Specifically, through the cooperation of the support column and the R-axis manual fine-tuning angle rotation platform, the position of the needle sleeve can be accurately adjusted. There is no need to frequently take, place and adjust the needle sleeve, and the operation is convenient.

[0023] 3: The needle sleeve claw bending system has the advantage of ensuring the smooth completion of the bending operation. Specifically, through the cooperation of the placement column and the control component, the needle sleeve can be effectively fixed on the support column to ensure the stability during position adjustment and bending, and avoid movement that affects the operation.

[0024] 4: The needle sleeve claw bending system has the advantages of ensuring the bending effect and product assembly performance. Specifically, through the interference fit between the punch and the punch seat and the shape design of the punch tip, it can better fit with the claw surface during the bending process, and it is also easy to replace it according to the wear conditions, ensuring the quality of the punch and the degree of fit with the claw.

[0025] In summary, the present invention can complete the bending process of the three claws on the needle sleeve at one time, and has high bending consistency, effectively improving the bending effect and product assembly performance. At the same time, there is no need to frequently take, place and adjust the needle sleeve during the bending process, which is convenient to operate and avoids the problem of damage to the needle sleeve. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 A schematic structural diagram of a needle sheath clamping claw bending system of a vascular suturing device proposed by the present invention;

[0027] Figure 2 for Figure 1 Schematic diagram of the structural breakdown of the middle jaw bending device;

[0028] Figure 3 for Figure 2 An enlarged schematic diagram of the structure of the middle punch seat and the punch;

[0029] Figure 4 for Figure 2 An enlarged schematic diagram of the structure of the pneumatic three-jaw chuck and the punch guide groove;

[0030] Figure 5 for Figure 2 A top view of the middle punch seat and the punch guide groove;

[0031] Figure 6 for Figure 5 Schematic diagram of the three-dimensional structure;

[0032] Figure 7 for Figure 2 An enlarged schematic diagram of the structure of the components on the middle base;

[0033] Figure 8 for Figure 2 A magnified schematic diagram of the structure of the rotating platform and the support column with manual fine-tuning of the middle R axis;

[0034] Fig. 9 It is an enlarged schematic diagram of the structure of the support column and the needle sleeve body in the present invention;

[0035] Fig.10 for Figure 8 A schematic diagram of the structure after the middle support column and the needle sleeve body are separated;

[0036] Fig.11 for Figure 8 Schematic diagram of the structural breakdown of the middle support column;

[0037] Fig.12 for Fig.11 An enlarged schematic diagram of the structure of the center turntable and its connecting components after being deflected by a certain angle.

[0038] In the figure: 10, universal support electron microscope; 20, clamping jaw bending device; 30, air pump device; 201, protective cover; 202, punch seat; 203, punch; 204, punch guide groove; 205, hollow three-jaw pneumatic chuck; 206, guide sleeve; 207, support column; 208, chuck base; 209, R-axis manual fine-tuning angle rotating platform; 210, support plate; 211, base; 212, needle sleeve body; 213, placement column; 214, rotating groove; 215, rotating ring; 216, rubber ring; 217, moving groove; 218, positioning block; 219, rotating rod; 220, turntable; 221, connecting rod; 222, rotating shaft. DETAILED DESCRIPTION

[0039] Reference Figure 1-Figure 12 A needle sleeve claw bending system of a vascular suturing device includes a universal bracket electron microscope 10, a claw bending device 20, an air pump device 30 and a needle sleeve body 212, wherein the universal bracket electron microscope 10 and the air pump device 30 are both existing products. The universal bracket electron microscope 10 is composed of a universal bracket and an electron microscope mounted thereon, and is used in conjunction with the claw bending device 20 to view the placement and processing of the needle sleeve body 212 in the claw bending device 20. The air pump device 30 is composed of an air pump, a foot switch and an air pipe connected to the claw bending device 20, and is used to control the operation of the claw bending device 20. There are three claws cut by laser on the needle sleeve body 212.

[0040] The jaw bending device 20 includes a base 211, on which an R-axis manual fine-tuning angle rotating platform 209 is fixed. The R-axis manual fine-tuning angle rotating platform 209 is an existing product and is used to rotate the needle sleeve body 212 at different angles at a horizontal angle, thereby facilitating the processing and positioning of the needle sleeve body 212 in different orientations. A chuck base 208 is fixedly installed on the base 211 through two support plates 210, and a hollow pneumatic three-jaw chuck 205 is fixedly installed on the upper end of the chuck base 208. The hollow three-jaw chuck 205 has a through hollow setting in the middle, that is, a through-matching circular hole is set on it, and the hollow three-jaw chuck 205 is connected to the air pipe on the air pump device 30.

[0041] The hollow three-jaw pneumatic chuck 205 is also an existing product, which synchronously controls the positions of the three punch seats 202 thereon through the changes in air pressure generated when the air pump is working.

[0042] Punch seats 202 are fixedly installed on the three output ends of the hollow three-jaw pneumatic chuck 205, and a punch 203 is fixedly installed on one end of each punch seat 202 close to the midpoint of the hollow three-jaw pneumatic chuck 205. When the air pump is working, the three punch seats 202 on the hollow three-jaw pneumatic chuck 205 drive the three punches 203 to approach the needle sleeve body 212, and bend the laser-cut jaws thereon.

[0043] An interference fit is adopted between the punch 203 and the punch seat 202, and a screw hole can be provided on the punch seat 202, and the punch 203 can be fixed and positioned on the punch seat 202 by means of screws, so as to prevent the punch 203 from becoming loose and shifting in position after being used for a long time, resulting in the problem of poor bending processing effect. At the same time, the split design between the punch 203 and the punch seat 202 can also facilitate the replacement of the punch 203 when it is worn, and the size of the tip of the punch 203 is consistent with the size of the claw of the laser cutting stroke on the needle sleeve body 212 (cannot be larger than the claw area), and a bevel design is performed at the same time, and the relevant bevel processing is performed according to the bending angle requirement of the claw on the needle sleeve body 212 (different bending angles have different effects on the anti-slip strength, which can be verified by yourself); the front end of the bevel is arc-shaped, so as to better fit with the claw surface of the needle sleeve body 212 and better complete the bending action.

[0044] A threaded hole is provided at the center position of the output end of the R-axis manual fine-tuning angle rotating platform 209, and a support column 207 is threadedly connected to the threaded hole. A placement column 213 for positioning and placing the needle sleeve body 212 is provided on the support column 207. After the needle sleeve body 212 is placed on the placement column 213, the horizontal angle of the needle sleeve body 212 can be adjusted by adjusting the R-axis manual fine-tuning angle rotating platform 209, so that the three claws on the needle sleeve body 212 correspond to the positions of the three punches 203 to ensure the bending effect. When adjusting, fine adjustment is performed by rotating the differential head thereon (an existing component in the R-axis manual fine-tuning angle rotating platform, and its specific position and connection method are not described here), and then it is fixed by tightening the locking screw (an existing component in the R-axis manual fine-tuning angle rotating platform, and its specific position and connection method are not described here).

[0045] A guide sleeve 206 is fixed to the chuck base 208 by bolt assembly, and the upper end of the guide sleeve 206 is located in the hollow three-jaw pneumatic chuck 205. At the same time, the guide sleeve 206 and the guide sleeve support column 207 are clearance-matched, that is, the two can rotate relative to each other, and the guide sleeve 206 can also play an axial positioning and supporting effect on the support column 207, thereby improving the stability of the needle sleeve body 212 placed on the support column 207.

[0046] A punch guide groove 204 is also fixedly installed in the middle position of the hollow three-jaw pneumatic chuck 205. A through hole cooperating with the support column 207 is set in the middle of the punch guide groove 204. The top of the placement column 213 on the support column 207 extends out from the through hole on the punch guide groove 204. There is also a clearance fit between the through hole and the support column 207. The punch guide groove 204 is a contoured groove, which is similar in shape to the front end of the punch 203. Through the design of the punch guide groove 204, the moving stroke of the three punches 203 can be guided and positioned, further ensuring the bending effect.

[0047] A protective cover 201 is fixedly installed on the upper end of the chuck base 208. The size of the protective cover 201 is larger than that of the hollow three-jaw pneumatic chuck 205. At the same time, a placement hole corresponding to the position of the placement column 213 is set on the top of the protective cover 201. The top of the placement column 213 is in the placement hole. The protective cover 201 can be made of stainless steel sheet metal, or can be made of engineering plastics or other suitable materials to play a protective and dust-proof role. The design of the placement hole can play a guiding and positioning role in the placement of the needle sleeve body 212 on the placement column 213. When the needle sleeve body 212 is subjected to the jaw bending process, the needle sleeve body 212 can be placed on the placement column 213 through the placement hole.

[0048] The placement column 213 is composed of a rod body 1 and a rod body 2. The rod body 1 is fixedly installed on the top of the support column 207, and the rod body 2 is fixedly installed on the top of the rod body 1. The diameter of the rod body 2 is smaller than the diameter of the rod body 1. The end of the rod body 1 close to the rod body 2 is set as an inclined surface. At the same time, the bottom of the inclined surface is horizontal with the bottom of the claw on the needle sleeve body 212 or is located below it. The purpose of setting the inclined surface at the connecting end of the rod body 1 and the rod body 2 is to support the inner wall of the claw when the claw is bent, so as to ensure the accuracy of the bending angle.

[0049] A plurality of movable grooves 217 are provided on the side wall of the rod body 1, and a positioning block 218 is slidably installed in each movable groove 217. The positioning block 218 and the movable groove 217 are both square in design. Through this design, the moving direction of the positioning block 218 in the movable groove 217 can be limited, and the end of the positioning block 218 close to the outer wall of the rod body 1 is arc-shaped (consistent with the arc of the inner wall of the needle sleeve body 212). The positioning block 218 is made of rubber material. When the positioning block 218 is outwardly against the inner wall of the needle sleeve body 212, the placement stability of the needle sleeve body 212 on the support column 207 can be guaranteed, and the angle of the needle sleeve body 212 can be stably regulated when the support column 207 rotates. In addition, the stability of the needle sleeve body 212 during the bending process can be guaranteed to avoid the problem of its deflection causing bending failure.

[0050] A rotating groove 214 is provided on the top side wall of the support column 207, and a rotating ring 215 is rotatably installed in the rotating groove 214. A rubber ring 216 is fixedly installed on the upper end of the rotating ring 215. The rubber ring 216 contacts the bottom of the needle sleeve body 212 to increase the friction between the needle sleeve body 212 and the rotating ring 215. A fixed rod is fixed on the inner wall of the rotating ring 215. A rotating rod 219 is fixed on the upper end of the fixed rod. A rotating disk 220 is fixedly installed on the upper end of the rotating rod 219. A connecting rod 221 is swingably installed between the rotating disk 220 and each positioning block 218. The two connecting rods 221 are rotatably connected to the rotating disk 220 and the positioning block 218 through a rotating shaft 222. When placing the needle sleeve body 212, tweezers are used. The needle sleeve body 212 is first placed on the placement column 213 using tools such as tweezers, and then the needle sleeve body 212 is driven to rotate a certain angle using tweezers. At this time, the friction between the bottom of the needle sleeve body 212 and the rubber ring 216 drives the rotating ring 215 to rotate, and then the rotating disk 220 is driven to rotate through the fixed rod and the rotating rod 219. Furthermore, through the setting of the connecting rod 221 and the movement direction of the positioning block 218, the positioning block 218 is extended outward in the moving groove 217 to abut against the inner wall of the needle sleeve body 212, thereby ensuring the stability of the needle sleeve body 212 on the placement column 213. At the same time, in the process of rotating the needle sleeve body 212 using tweezers, the needle sleeve body 212 and the placement column 213 can also be more closely fitted.

[0051] In the present invention, the working principle of a needle sheath claw bending system of a vascular suturing device includes the following steps:

[0052] Parameter adjustment of the hollow three-jaw pneumatic chuck 205: In the initial state, the pitch circle diameter formed by the tips of the three punches 203 is set to D1 (D1 can be accurately obtained through the specifications of the hollow three-jaw pneumatic chuck 205, and specifically the value when the three punches 203 are farthest from the support column 207 is used), the bending depth of the clamping jaws on the needle sleeve body 212 is set to H, the outer diameter of the needle sleeve body 212 is set to d, and the moving distance of the punch 203 is set to L;

[0053] The above H, D1 and D are all known values, so according to the formula L=H+(D1-d) / 2, the value of L is obtained, and the parameters of the pneumatic three-jaw chuck 205 are set according to the value;

[0054] Placement of the needle sleeve body 212: The claw bending device 20 is placed under the universal bracket electron microscope 10. Through the observation of the universal bracket electron microscope 10, the staff uses tweezers and other tools to place the needle sleeve body 212 on the placement column 213 on the top of the support column 207, and rotates the needle sleeve body 212 at a certain angle to make it fit more closely with the placement column 213;

[0055] During the process of rotating the needle sleeve body 212, the plurality of positioning blocks 218 abut against the inner wall of the needle sleeve body 212 through the rotation of the rubber ring 216, thereby achieving fixation between the needle sleeve body 212 and the placement column 213;

[0056] Angle adjustment of the needle sleeve body 212: After the needle sleeve body 212 is placed and fixed, observe whether the laser cutting claws on the needle sleeve body 212 are aligned with the positions of the multiple punches 203 through the universal bracket electron microscope 10. If there is an offset, adjust the R-axis manual fine-tuning angle rotating platform 209 to adjust the angle of the needle sleeve body 212 so that the upper claws are aligned with the positions of the multiple punches 203 one by one;

[0057] Bending process: After the needle sleeve body 212 is fixed and the angle is adjusted, the foot switch on the air pump device 30 is stepped on to make the air pump work once, so that the hollow pneumatic three-jaw chuck 205 performs a pressing action. During this process, the three punches 203 realize the bending process of the three claws on the needle sleeve body 212. After the bending process is completed, the bending effect is observed through the universal bracket electron microscope 10, and then the bent needle sleeve body 212 is removed from the placement column 213, and the next needle sleeve body 212 is replaced to repeat the above steps to realize continuous processing.

[0058] The above shows and describes the basic principles and main features of the present invention and the advantages of the present invention. It should be understood by those skilled in the art that the present invention is not limited by the above embodiments, and the above embodiments and descriptions are only for explaining the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, and these changes and improvements all fall within the scope of the present invention to be protected.

Claims

1. A needle sheath claw bending system for a vascular suturing device, comprising a universal support electron microscope (10), an air pump device (30) and a needle sheath body (212), characterized in that: Also includes: A jaw bending device (20), the jaw bending device (20) comprising a base (211), an R-axis manual fine-adjustment angle rotating platform (209) being fixedly mounted on the base (211), a chuck base (208) being fixedly mounted on the base (211) via two support plates (210), and a hollow pneumatic three-jaw chuck (205) being fixedly mounted on the chuck base (208); The hollow three-jaw pneumatic chuck (205) is provided with three punch seats (202), and each punch seat (202) is provided with a punch (203) matched with the needle sleeve body (212), the tip of the punch (203) is designed with an angle, and the end of the angle away from the punch (203) is in an arc shape that matches the arc of the surface of the needle sleeve body (212); The R-axis manual fine-tuning angle rotating platform (209) is threadedly connected with a support column (207), and a placement column (213) matched with the needle sleeve body (212) is fixedly installed on the support column (207), and the placement column (213) is composed of a rod body 1 and a rod body 2, wherein the rod body 1 is fixedly installed on the top of the support column (207), and the rod body 2 is fixedly installed on the top of the rod body 1, and the diameter of the rod body 2 is smaller than the diameter of the rod body 1, and one end of the rod body 1 close to the rod body 2 is set as an inclined surface; A plurality of movable grooves (217) are evenly arranged on the side wall of the rod body 1, and a positioning block (218) is slidably installed in each movable groove (217). A control component is installed between the support column (207) and the rod body 1, and the control component cooperates with the plurality of positioning blocks (218).

2. The needle sheath jaw bending system of a vascular suturing device according to claim 1, characterized in that: A protective cover (201) is fixedly mounted on the upper end of the chuck base (208), and the size of the protective cover (201) is larger than the size of the hollow three-jaw pneumatic chuck (205). A placement hole corresponding to the position of the placement column (213) is provided on the top of the protective cover (201).

3. The needle sheath jaw bending system of a vascular suturing device according to claim 1, characterized in that: A guide sleeve (206) is fixedly mounted on the chuck base (208), and a clearance fit is formed between the guide sleeve (206) and the support column (207). A circular hole matching the guide sleeve (206) is provided on the hollow pneumatic three-jaw chuck (205).

4. The needle sheath jaw bending system of a vascular suturing device according to claim 1, characterized in that: The punch seat (202) and the punch (203) are in interference fit, and a plurality of screw holes are provided on the side wall of the punch seat (202), each of the screw holes being threadedly connected with a screw in contact with the side wall of the punch (203).

5. The needle sheath jaw bending system of a vascular suturing device according to claim 3, characterized in that: A punch guide groove (204) matching with a plurality of punches (203) is fixedly mounted on the hollow pneumatic three-jaw chuck (205), and the punch guide groove (204) is located at the upper end of the guide sleeve (206). A through hole is provided on the punch guide groove (204) that is clearance-matched with the support column (207).

6. The needle sheath jaw bending system of a vascular suturing device according to claim 1, characterized in that: The control assembly comprises a rubber ring (216) rotatably mounted on the upper end of a support column (207), a rotating ring (215) being fixedly mounted on the bottom of the rubber ring (216), and a rotating disk (220) being mounted on the inner wall of the rotating ring (215) via a connecting mechanism, and a connecting rod (221) being swingably mounted between the rotating disk (220) and each positioning block (218).

7. The needle sheath jaw bending system of a vascular suturing device according to claim 6, characterized in that: The connection mechanism comprises a fixing rod fixedly mounted on the inner wall of the rotating ring (215), and a rotating rod (219) is fixedly mounted between the top of the fixing rod and the rotating disk (220).

8. The needle sheath jaw bending system of a vascular suturing device according to claim 6, characterized in that: The upper side wall of the support column (207) is provided with a rotation groove (214) that is rotatably matched with the rotating ring (215), and both ends of the connecting rod (221) are rotatably connected to the rotating disk (220) and the positioning block (218) via a rotating shaft (222).

9. The needle sheath jaw bending system of a vascular suturing device according to claim 6, characterized in that: The positioning block (218) and the movable groove (217) are both square in shape, and a surface of the positioning block (218) away from the connecting rod (221) is arc-shaped.

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