The safety device of the continuous-fire clamp applicator

Abstract

The present invention discloses a withholding safety device of a continuous-fire clamp applicator, which is used to lock or open a feeding device of the continuous-fire clamp applicator. The continuous-fire clamp applicator comprises a pushing handle, a pipe rod and a clamp head installed at the front end of the pipe rod. The pipe rod is provided with a feeding device, a push-pull rod and a storage bin. The withholding safety device comprises a fixing member, a gear assembly and a safety shaft. The gear assembly is used to push the transmission member to move. The gear assembly is installed on the fixing member through the safety shaft and rotates relative to the fixing member. The safety shaft is used to lock or open the gear assembly, which can prevent the transmission member from retreating when the continuous-fire clamp applicator is in normal use, and can also prevent the driving member from pushing the transmission member forward due to misoperation, causing the closing clamp to enter the clamp head and affecting the clamp head from clamping the closing clamp. The withholding safety device makes the use of the continuous-fire clamp applicator safer, more reliable and smoother.

Description

Technical Field

[0001] The invention relates to the technical field of medical equipment, and in particular to a withholding safety device for a continuous-firing clip applier. Background Art

[0002] A clip applier is a commonly used medical device, usually used in surgical operations to clamp blood vessels and stop bleeding, and is also called a hemostatic forceps. When the existing continuous clip applier pushes the closing clip in the storage bin, the feeding device and the pushing handle respectively complete the action of pushing the closing clip and clamping the closing clip. During the operation, since the feeding device and the pushing handle are installed at a close distance, the feeding device is easily touched, resulting in misoperation of the continuous clip applier, causing the feeding device to retreat, and the closing clip in the storage bin to loosen and shift, affecting the continuous use of the continuous clip applier. Summary of the invention

[0003] In view of this, it is necessary to provide a withholding safety device of the continuous-fire clamp applicator with a simple structure and capable of locking a feeding device.

[0004] A firing safety device for a continuous-fire clamping pliers, the continuous-fire clamping pliers is used to send closed clamps, the clamping pliers comprises a pushing handle, a tube rod and a clamp head installed at the front end of the tube rod, a feeding device, a push-pull rod and a storage bin are arranged in the tube rod, the feeding device comprises a transmission member, the firing safety device comprises a fixing member, a gear assembly and a safety shaft, the gear assembly is used to push the transmission member to move, the gear assembly is installed on the fixing member through the safety shaft and rotates relative to the fixing member, the safety shaft is used to lock or open the gear assembly; the safety shaft comprises an elastic member and a base and an axle pin which are arranged relatively and are connected by threads, the elastic member is supported between the fixing member and the base, when the axle pin is tightened with the base, the base is tightly fitted to the gear assembly, so that the gear assembly cannot rotate; when the engagement between the axle pin and the base is released, the elastic member pushes the base to release the gear assembly, and the gear assembly rotates freely.

[0005] Furthermore, the pushing handle is connected to a mounting tube, the conveying member is arranged in the mounting tube, the rear end of the conveying member has a tooth stripe, and the mounting tube is provided with a rack groove at a position corresponding to the tooth stripe.

[0006] Further, the gear assembly includes a gear and a wheel handle away from the gear side, the gear extends into the gear groove and meshes with the tooth stripes, and the wheel handle is used to rotate the gear assembly.

[0007] Furthermore, the fixing parts are respectively fixed on both sides of the length direction of the gear groove, and the fixing parts have a first fixing hole and a safety hole, and the safety hole is arranged between the gear groove and the first fixing hole; the gear assembly has a second fixing hole and an arc-shaped through hole, and the arc-shaped through hole is in the same direction as the gear and is arranged between the gear and the second fixing hole.

[0008] Furthermore, the gear assembly is arranged between the two fixing parts, the position of the first fixing hole corresponds to the position of the second fixing hole, the distance from the safety hole to the first fixing hole is consistent with the radius from the arc-shaped through hole to the second fixing hole, so that when the gear assembly rotates, the arc-shaped through hole coincides with the safety hole.

[0009] Furthermore, a fixing shaft is inserted into the second fixing hole and the first fixing hole, and the gear assembly rotates around the fixing shaft; and the safety shaft is inserted into the safety hole and the arc-shaped through hole.

[0010] Furthermore, the shaft pin of the safety shaft has an external thread, the base has a threaded hole, and the shaft pin is fixed in the base by rotating the thread.

[0011] Furthermore, the base includes a first nut and a screw hole column, the first nut is arranged at the outer top end of the screw hole column, the outer diameter of the screw hole column is the same as the distance between the two inner walls of the arc-shaped through hole, and the top end of the screw hole column has a column base, and the diameter of the column base is smaller than the distance between the two inner walls of the arc-shaped through hole.

[0012] Furthermore, the diameter of the first nut is larger than the diameter of the screw hole column, the first nut has a groove on the inner side, the top of the outer side of the safety hole has a concave platform, the diameter of the concave platform is larger than the diameter of the safety hole, and the two ends of the elastic member are respectively arranged on the bottom of the groove and the concave platform.

[0013] Furthermore, the axle pin includes a second nut and a bolt column, the second nut is arranged at the outer top end of the bolt column, the diameter of the second nut is larger than the diameter of the bolt column, and a protruding handle is provided on the outer side of the second nut, and the handle is used to rotate the axle pin.

[0014] In the above-mentioned withholding safety device of the continuous-fire clamp applicator, the feeding device of the continuous-fire clamp applicator pushes the closing clamp in the storage bin into the clamp head, and the pushing handle pulls the push-pull rod to make the clamp head clamp the closing clamp. The feeding device and the pushing handle work alternately. When the pushing handle is actuated, the safety shaft locks the driving member, so that the driving member cannot push the transmission member to move. This can prevent the transmission member from retreating during normal use of the continuous-fire clamp applicator, causing the closing clamp in the storage bin to loosen and shift; it can also prevent misoperation from causing the driving member to push the transmission member forward, causing the closing clamp to enter the clamp head, affecting the clamp head clamping the closing clamp. The withholding safety device makes the use of the continuous-fire clamp applicator safer, more reliable and smoother. The structure of the present invention is simple, easy to implement, low-cost, and easy to promote. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a cross-sectional view of a withholding safety device of a continuous-fire clip applier according to an embodiment of the present invention.

[0016] Figure 2 It is a cross-sectional view of the safety shaft of the withholding safety device of the continuous firing clip applier according to an embodiment of the present invention.

[0017] Figure 3 It is a structural exploded view of the withholding safety device of the continuous-fire clip applier according to an embodiment of the present invention.

[0018] Figure 4 It is a structural schematic diagram of a withholding safety device of a continuous-fire clip applier according to an embodiment of the present invention. DETAILED DESCRIPTION

[0019] This embodiment takes the withholding safety device of the continuous-fire clip applier as an example, and the present invention will be described in detail below in conjunction with specific embodiments and drawings.

[0020] See also Figure 1 , Figure 3 and Figure 4, shows a firing safety device 100 of a continuous-fire clamp applicator provided by an embodiment of the present invention, the continuous-fire clamp applicator 1000 is used to send a closed clip, the continuous-fire clamp applicator 1000 includes a push handle 200, a pipe rod 300 and a clamp head 400 installed at the front end of the pipe rod 300, a feeding device 500, a push-pull rod and a storage bin are provided in the pipe rod 300, the feeding device 500 includes a transmission member, the firing safety device includes a fixing member 10, a gear assembly 20 and a safety shaft 30, the gear assembly 20 is used to push the transmission member to move, the gear assembly 20 is installed on the fixing member 10 through the safety shaft 30, and is relatively For the rotation of the fixing member 10, the safety shaft 30 is used to lock or open the gear assembly 20; the safety shaft 30 includes an elastic member 33 and a base 31 and an axle pin 32 that are relatively arranged and connected by threads, the elastic member 33 is supported between the fixing member 10 and the base 31, and when the axle pin 32 is tightened with the base 31, the base 31 is tightly fitted to the gear assembly 20, so that the gear assembly 20 cannot rotate; when the engagement between the axle pin 32 and the base 31 is released, the elastic member 33 pushes the base 31 to release the gear assembly 20, and the gear assembly 20 rotates freely.

[0021] For the continuous firing structure and principle of the continuous firing clamp applier 1000, please refer to the Chinese invention patent application No. 201810646052.4 filed by Huang Rongquan on June 21, 2018. The detailed structure of the continuous firing clamp applier 1000 is not described here.

[0022] Specifically, in this embodiment, the side of the burst clip applier close to the clamp head 400 is the front end, and the side opposite to the front end is the rear end.

[0023] Further, the push handle 200 is connected to a mounting tube 210, the transmission member is arranged in the mounting tube 210, the rear end of the transmission member has a tooth stripe 510, and the mounting tube 210 is provided with a rack groove corresponding to the position of the tooth stripe 510. The gear assembly 20 includes a gear 21 and a wheel handle 22 away from the gear 21 side, the gear 21 extends into the gear 21 groove and meshes with the tooth stripe 510, and the wheel handle 22 is used to rotate the gear assembly 20. The fixing member 10 is respectively fixed on both sides of the gear 21 groove in the length direction, and the fixing member 10 has a first fixing hole 11 and a safety hole 12, and the safety hole 12 is arranged between the gear 21 groove and the first fixing hole 11; the gear assembly 20 has a second fixing hole 24 and an arc-shaped through hole 23, and the arc-shaped through hole 23 is in the same direction as the gear 21 and is arranged between the gear 21 and the second fixing hole 24. The gear assembly 20 is arranged between the two fixing parts 10, the position of the first fixing hole 11 corresponds to the position of the second fixing hole 24, the distance from the safety hole 12 to the first fixing hole 11 is consistent with the radius between the arc-shaped through hole 23 and the second fixing hole 24, so that when the gear assembly 20 rotates, the arc-shaped through hole 23 coincides with the safety hole 12.

[0024] Specifically, the gear 21 and the arc-shaped through hole 23 are respectively arranged on concentric circles with different radii with the second fixing hole 24 as the center. When the gear assembly 20 rotates, the gear 21 and the arc-shaped through hole 23 rotate synchronously. The gear 21 is used to push the conveying member to move toward the front end, and the safety hole 12 coincides with the arc-shaped through hole 23 from beginning to end, so as to control the rotation angle of the gear assembly 20, thereby controlling the distance that the conveying member moves toward the front end.

[0025] Furthermore, a fixing shaft 40 is inserted into the second fixing hole 24 and the first fixing hole 11 , and the gear assembly 20 rotates around the fixing shaft 40 ; and the safety shaft 30 is inserted into the safety hole 12 and the arc-shaped through hole 23 .

[0026] For further information, see Figure 2The shaft pin 32 of the safety shaft 30 has an external thread, and the base 31 has a threaded hole. The shaft pin 32 is fixed in the base 31 by threaded rotation. The base 31 includes a first nut 311 and a screw hole column 312. The first nut 311 is arranged at the outer top end of the screw hole column 312. The outer diameter of the screw hole column 312 is the same as the distance between the two inner side walls of the arc through hole 23. The top end of the screw hole column 312 has a column base 3121. The diameter of the column base 3121 is smaller than the distance between the two inner side walls of the arc through hole 23. The diameter of the first nut 311 is larger than the diameter of the screw hole column 312. The inner side of the first nut 311 has a groove 3111. The outer top end of the safety hole 12 has a concave platform. The diameter of the concave platform is larger than the diameter of the safety hole 12. The two ends of the elastic member 33 are respectively arranged on the bottom of the groove 3111 and the concave platform. The shaft pin 32 includes a second nut 321 and a bolt column 322. The second nut 321 is arranged at the outer top end of the bolt column 322. The diameter of the second nut 321 is larger than the diameter of the bolt column 322. A protruding handle is provided on the outer side of the second nut 321, and the handle is used to rotate the shaft pin 32.

[0027] Specifically, the second nut 321 is rotated to loosen the engagement between the shaft pin 32 and the base 31, and the elastic member 33 pops the base 31 out of the arc-shaped through hole 23, so that the gear assembly 20 can rotate freely; after the gear assembly 20 is rotated to the desired position, the second nut 321 is tightened to tightly engage the shaft pin 32 and the base 31, and the elastic member 33 is pressed, so that the outer wall of the base 31 is tightly fitted with the inner wall of the arc-shaped through hole 23, and the gear assembly 20 cannot rotate, so that the gear assembly 20 is locked.

[0028] In the above-mentioned withholding safety device 100 of the continuous-fire clamp applicator, the feeding device 500 of the continuous-fire clamp applicator pushes the closing clamp in the storage bin into the clamp head 400, and the pushing handle 200 pulls the push-pull rod to make the clamp head 400 clamp the closing clamp. The feeding device 500 and the pushing handle 200 work alternately. When the pushing handle 200 is actuated, the safety shaft 30 locks the driving member so that the driving member cannot push the transmission member to move. This can prevent the transmission member from retreating during normal use of the continuous-fire clamp applicator, causing the closing clamp in the storage bin to loosen and shift; it can also prevent the driving member from pushing the transmission member forward due to misoperation, causing the closing clamp to enter the clamp head 400, affecting the clamp head 400 clamping the closing clamp. The withholding safety device makes the use of the continuous-fire clamp applicator safer, more reliable and smoother. The structure of the present invention is simple, easy to implement, low in cost, and easy to promote.

[0029] It should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A safety device for a continuous-firing clamp, the continuous-firing clamp is used to send a closed clamp, the clamp comprises a push handle, a pipe rod and a clamp head mounted on the front end of the pipe rod, a feeding device, a push-pull rod and a storage bin are arranged in the pipe rod, the feeding device comprises a transmission member, characterized in that: The withholding safety device includes a fixing part, a gear assembly and a safety shaft, the gear assembly is used to push the transmission part to move, the gear assembly is installed on the fixing part through the safety shaft and rotates relative to the fixing part, and the safety shaft is used to lock or open the gear assembly; the safety shaft includes an elastic part and a base and an axle pin that are relatively arranged and connected by threads, the elastic part is supported between the fixing part and the base, and when the axle pin and the base are tightened, the base fits tightly against the gear assembly so that the gear assembly cannot rotate; when the engagement between the axle pin and the base is released, the elastic part pushes the base to release the gear assembly, and the gear assembly rotates freely; the fixing part has a safety hole, and the gear assembly has an arc-shaped through hole, and the base includes a first nut and a screw hole column, the first nut is arranged on the outer top end of the screw hole column, and the screw hole column The outer diameter is the same as the distance between the two inner walls of the arc-shaped through hole, the top of the screw hole column has a column base, and the diameter of the column base is smaller than the distance between the two inner walls of the arc-shaped through hole; the diameter of the first nut is larger than the diameter of the screw hole column, the inner side of the first nut has a groove, the outer top end of the safety hole has a concave platform, the diameter of the concave platform is larger than the diameter of the safety hole, and the two ends of the elastic member are respectively arranged on the top of the groove and the bottom of the concave platform; the pushing handle is connected to the mounting tube, the conveying member is arranged in the mounting tube, the rear end of the conveying member has tooth stripes, and the mounting tube has a rack groove corresponding to the position of the tooth stripes; the shaft pin includes a second nut and a bolt column, the second nut is arranged at the outer top end of the bolt column, the diameter of the second nut is larger than the diameter of the bolt column, and a protruding handle is provided on the outer side of the second nut, and the handle is used to rotate the shaft pin.

2. The trigger safety device for the continuous-fire clip applier according to claim 1, wherein: The gear assembly comprises a gear and a wheel handle away from the gear side, the gear extends into the gear groove and meshes with the tooth stripes, and the wheel handle is used to rotate the gear assembly.

3. The trigger safety device for the continuous-fire clip applier according to claim 2, wherein: The fixing parts are respectively fixed on both sides of the gear groove in the length direction, and the fixing parts have a first fixing hole, and the safety hole is arranged between the gear groove and the first fixing hole; the gear assembly has a second fixing hole, and the arc-shaped through hole is in the same direction as the gear and is arranged between the gear and the second fixing hole.

4. The trigger safety device for the continuous-fire clip applier according to claim 3, wherein: The gear assembly is arranged between the two fixing parts, the position of the first fixing hole corresponds to the position of the second fixing hole, the distance from the safety hole to the first fixing hole is consistent with the radius from the arc-shaped through hole to the second fixing hole, so that when the gear assembly rotates, the arc-shaped through hole coincides with the safety hole.

5. The trigger safety device for the continuous-fire clip applier according to claim 4, wherein: A fixing shaft is inserted into the second fixing hole and the first fixing hole, and the gear assembly rotates around the fixing shaft; the safety shaft is inserted into the safety hole and the arc-shaped through hole.

6. The trigger safety device for the continuous-fire clip applier according to claim 4, wherein: The shaft pin of the safety shaft has an external thread, the base has a threaded hole, and the shaft pin is fixed in the base by rotating the thread.

Images