Prostatic staple device
By designing a prostate staple device with a replaceable gate box, the problems of high cost and complex structure in the existing technology have been solved, achieving the effect of reducing surgical costs and improving operational efficiency.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- ZHEJIANG APELOA JIAYUAN BIOMEDICAL MATERIAL
- Filing Date
- 2023-11-30
- Publication Date
- 2026-07-07
Smart Images
Figure CN117357178B_ABST
Abstract
Description
Technical Field
[0001] This invention relates to a prostate stapler device, belonging to the technical field of medical devices. Background Technology
[0002] The prostate gland enlarges throughout a man's life. In some men, the prostate capsule surrounding the prostate may prevent it from growing further. This causes the internal areas of the prostate to compress the urethra. This pressure in the urethra increases resistance to urine flow through the area of the urethra surrounded by the prostate.
[0003] Existing treatment methods involve implanting prostate staples into the obstructed prostatic urethra through the natural cavity of the urethra. Similar to a stapler, these staples are driven into the enlarged prostate tissue through the urethra. The special structure tightens the prostate tissue, and the combined use of several staples can "bind" the prostate, widen the urethra, and "tighten" the enlarged prostate gland in the urethra without removing any tissue. This relieves the pressure of the gland on the urethra and restores urethral patency.
[0004] Chinese patent application CN114980823A discloses a device for mitigating damage to a treatment instrument, wherein the device includes: a treatment tool, which is coupled to a movable component at a proximal portion of the treatment tool; and a force-limiting element, which is connected to the proximal portion of the treatment tool and to the movable component.
[0005] The aforementioned prior art treatment tool includes a module and a handle configured to accommodate the module. The handle and module together push a needle and suture to perform prostate fixation. However, this structure can only be used once. In actual surgery, multiple prostate fixation operations are required. The treatment tool is discarded after one use. The handle and gate (i.e., module) of the treatment tool are extremely expensive to use, have a complex structure, and high production costs. For patients, the cost of a single treatment is even greater, and the medical burden is very heavy. This greatly limits the applicable population and scope of the treatment tool, which is not conducive to the promotion of the treatment tool. Summary of the Invention
[0006] The purpose of this invention is to provide a prostate stapler device that solves the problems of high surgical costs, high instrument usage costs, and heavy burden on patients in the prior art.
[0007] The above-mentioned technical objective of the present invention is mainly achieved through the following technical solution: a prostate stapler device, comprising a drive handle and a gate box pulsatingly connected to the drive handle. The drive handle is provided with a mounting groove that cooperates with and fixes the gate box. The gate box contains a needle slider pulsatingly connected to a puncture needle, a wire slider pulsatingly connected to the stapler wire and pulsatingly connected to the needle slider, and an energy storage slider for activating the needle slider. The bottom of the mounting groove is provided with multiple transmission grooves. The needle slider and the energy storage slider extend through each transmission groove into the drive handle. The drive handle contains a rotatable wheel. The end face of the wheel is provided with a first arc-shaped protrusion for driving the needle slider and a second arc-shaped protrusion for driving the energy storage slider. When the wheel rotates, the first and second arc-shaped protrusions can respectively push the needle slider and the energy storage slider to move along their respective transmission grooves. The aforementioned drive handle is assembled with the gate box, and after the gate box has been used once, a new gate box can be replaced during the operation. The new gate box is then assembled onto the old drive handle for reuse, effectively reducing the cost of surgical instruments and thus reducing the expenses required for surgery, alleviating the burden on patients. At the same time, the drive handle can stably drive the needle slider and the energy storage slider in the gate box for surgical operations through the first and second arc-shaped protrusions on the wheel. The assembly is simple, the drive is stable and reliable, effectively improving the operational efficiency and instrument stability during surgery, and ensuring the normal progress of the operation.
[0008] Preferably, the gate box includes a lower box body assembled in the mounting groove, the energy storage slider is located in the lower box body, the needle slider is located on the adjacent side of the energy storage slider, the side wall of the energy storage slider is provided with an energy storage spring arranged along the moving direction of the energy storage slider, and the side wall of the needle slider extends out a connecting part that connects to the end of the energy storage spring; the energy storage slider moves when the wheel rotates for the first time, and the end of the energy storage spring is connected to the needle slider through the connecting part, so that the energy storage spring is stretched by the energy storage slider to realize the energy storage operation, so as to provide power for the activation of the puncture needle, and during activation, the energy storage slider can drive the needle slider and the wire slider to move synchronously through the connecting part to realize the activation operation.
[0009] Preferably, a limiting block is provided on one side of the moving endpoint of the energy storage slider corresponding to the moving endpoint of the needle slider. A limiting hook is provided on the side of the limiting block facing the energy storage slider to prevent the energy storage slider from automatically resetting. A limiting spring connected to the lower box is provided on the other side of the limiting hook. The limiting block can lock the energy storage slider by the limiting hook when energy storage is completed, preventing the energy storage slider from rebounding. The limiting spring provides power to the limiting block, so that the limiting block can maintain the limiting and blocking effect on the energy storage slider. Moreover, the limiting block can release the limiting block from the energy storage slider at any time by the extension and contraction of the limiting spring.
[0010] Preferably, the top surface of the limiting hook is provided with an inclined groove that slopes toward the location of the limiting spring. The top of the needle slider is provided with a push rod, the end of which bends downward and extends into the inclined groove. The middle of the line slider is provided with a strip groove arranged along the moving direction of the needle slider. The end of the needle slider is provided with a transmission block that extends upward into the strip groove. The inclined groove is provided so that when the needle slider is driven towards the limiting block by the force of the energy storage spring during the excitation operation, the needle slider can simultaneously drive the push rod to move into the inclined groove and lock the end of the push rod through the side wall of the inclined groove, preventing the needle slider from automatically returning to its original position. The transmission block of the needle slider is in the strip groove, so that the needle slider can drive the line slider to move synchronously when it moves during the excitation.
[0011] Preferably, the strip groove is provided with a return spring arranged along the length of the strip groove. One end of the return spring is connected to the transmission block, and the other end of the return spring is connected to the end side wall of the strip groove. The end of the line slider away from the needle slider is provided with a protrusion. The bottom surface of the lower box is provided with an elastic hook for limiting the return of the line slider and allowing it to float up and down. The return spring connects the transmission block and the line slider, so that the needle slider and the line slider can move independently. At the same time, the return spring can connect the transmission block of the needle slider and the line slider to ensure normal linkage in the future. The elastic hook can lock the protrusion after the activation operation, thereby blocking the line slider and preventing the line slider from retracting in the next operation.
[0012] Preferably, the drive handle includes an upper housing and a lower housing that are interconnected. A grip portion is provided on the side of the lower housing, and a trigger is provided adjacent to the grip portion. The trigger includes a transmission section extending into the lower housing and a drive section located outside the lower housing and adjacent to the grip portion. The end of the transmission section is rotatably connected to the lower housing and can drive a wheel to rotate intermittently. A first transmission rack is provided inside the lower housing for pushing the energy storage slider and can move in the direction of the trigger. At the initial position of the connecting portion on the side wall of the pin slider, a locking hook is provided corresponding to the bottom of the lower housing and rotatably connected to the bottom of the lower housing. The top surface of the first transmission rack has a limiting groove arranged along the moving direction of the energy storage slider, and one end of the locking hook is bent downwards to the limiting groove. Inside, the other end of the locking hook bends upward, passes through the lower housing, and protrudes from the bottom surface of the lower housing. The trigger is connected to the lower housing via a transmission section and can rotate to drive the wheel to rotate with the trigger. The wheel can then drive the staples to gradually penetrate the prostate tissue through multiple rotations. The drive section of the trigger can synchronously drive the first transmission rack to move, so as to push the energy storage slider to achieve energy storage. The locking hook can lock the connecting part during the energy storage operation to prevent the connecting part from moving and ensure the normal operation of energy storage. The movement of the first transmission rack can push the locking hook part in the limiting groove to be pushed by the side wall at the end of the limiting groove, so that the upward protruding part of the locking hook disengages from the connecting part of the needle slider, thereby causing the needle slider and the wire slider to move with the connecting part to achieve the puncture needle activation operation.
[0013] Preferably, the lower housing contains a first gear that meshes with and is horizontally rotatable to the first transmission rack. On the side of the first gear opposite to the first transmission rack, there is a second transmission rack that is connected to the drive section and meshes with the first gear. The lower housing contains a first guide bar and a second guide bar that pass through the first and second transmission racks respectively. Both the first and second guide bars are arranged along the movement directions of the first and second transmission racks, respectively. The second transmission rack can be driven by the drive section, causing it to drive the first gear and, through the first gear, move the first transmission rack, thus achieving stable transmission between the trigger and the first transmission rack. The first and second guide bars can guide and position the first and second transmission racks respectively, and support their stable movement.
[0014] Preferably, the drive section has a through-groove arc-shaped groove near the second transmission rack. A pin, movable along the arc-shaped groove, passes through the groove. The side of the second transmission rack has a slot that engages with the pin and is angled towards the gripping part. A rotating shaft passes through the drive section at the center of the arc-shaped groove. A connecting block is provided at the end of the rotating shaft and the end of the pin on the top surface of the drive section. The connecting block has a protrusion. A limiting device is provided on the upper housing above the second transmission rack to guide the protrusion and tilt towards the gripping part. The aforementioned arc-shaped groove can limit the movement trajectory of the pin. When the drive section moves, the pin can move along the arc-shaped groove and always stay in the slot, so as to drive the second transmission rack to move synchronously with the movement of the drive section. The aforementioned rotating shaft is connected to the pin through a connecting block, so as to enable the pin to drive the rotating shaft. When the pin passes through the limiting plate, the protrusion is limited by the limiting effect of the limiting plate, which drives the pin to move in the arc-shaped groove and gradually separate from the slot. When the pin separates from the slot, the protrusion can control the pin and the rotating shaft and control the movement of the rotating shaft and the pin to reconnect the pin with the slot.
[0015] Preferably, the drive section is provided with a movable groove for the rotating shaft to pass through. One end of the inner arc surface of the arc-shaped groove has a retaining groove that engages with the movable groove to lock the rotating shaft and the pin. A torsion spring is fitted onto the rotating shaft, with one end connected to the pin and the other end connected to the drive section. The retaining groove is located at the outward-facing end of the arc-shaped groove, and the line connecting the movable groove and the retaining groove is in the same direction as the radius of the arc-shaped groove's trajectory. The aforementioned movable groove and retaining groove allow the pin to automatically engage with the retaining groove when it moves to the end of the arc-shaped groove due to the limiting effect of the positioning plate, while the rotating shaft... The movable slot is moved by the connecting block, which positions the pin in the slot. When the pin is moved out of the slot, it can automatically move to the other end of the arc-shaped slot by the action of the torsion spring. The pin then re-engages in the slot, connecting the drive section and the second transmission rack. When the pin is engaged in the slot, the axis of the pin coincides with the line connecting the movable slot and the slot. When the pin moves to the slot at the end of the arc-shaped slot, it slides into the slot by the action of the torsion spring, thereby limiting the pin and separating it from the slot. The subsequent movement of the drive section no longer drives the second transmission rack.
[0016] Preferably, the center of the bottom surface of the wheel is rotatably connected to the lower housing. A second gear, rotatably connected to the lower housing and capable of driving the wheel to rotate in one direction, is located at the center of the bottom surface of the wheel. An arc-shaped gear set is located on the side wall of the transmission section of the trigger, near the side of the second gear. The arc-shaped gear set meshes with a portion of the teeth of the second gear. A ratchet is located on the bottom surface of the wheel, abutting against the end face of the second gear. A connecting arm extends from the side wall of the second gear, capable of driving the ratchet to rotate in one direction. A helical gear ring is located on the bottom surface of the wheel corresponding to the circumference of the ratchet. A blocking strip, cooperating with the helical gear ring, restricts the unidirectional rotation of the wheel on the bottom surface of the lower housing. The aforementioned second gear can be driven through the transmission section... The arc-shaped gear set drives the rotation, so that the second gear can drive the wheel to rotate synchronously, and the wheel can drive the first arc-shaped convex strip and the second arc-shaped convex strip to rotate gradually, realizing structural transmission. The ratchet can be connected to the second gear through the connecting arm, so that when the second gear rotates, it can drive the ratchet to rotate in the same direction through the connecting arm. The ratchet can then drive the wheel to rotate synchronously in one direction. When the trigger is reset, the second gear can disengage from the ratchet and rotate independently, and the wheel remains stationary through the cooperation of the helical gear ring and the blocking strip, thereby realizing the reset of the second gear and the stop of the wheel. The second gear can continue to drive the ratchet to rotate in the same direction, and then the reciprocating rotation of the trigger realizes the intermittent rotation drive of the wheel.
[0017] Therefore, the present invention has the advantages of reducing the cost of using surgical instruments, reducing the cost of surgery, alleviating the burden on patients, and ensuring stable and reliable operation, thereby improving the efficiency of operation and the stability of instrument use during surgery and ensuring the normal progress of surgery. Attached Figure Description
[0018] Figure 1 This is a three-dimensional structural diagram of the present invention.
[0019] Figure 2 yes Figure 1 A schematic diagram of the drive handle in the diagram.
[0020] Figure 3 yes Figure 2 A partial structural diagram.
[0021] Figure 4 yes Figure 1 A schematic diagram of the internal structure of the gate box.
[0022] Figure 5 yes Figure 1 A partial structural cross-sectional view of the gate box.
[0023] Figure 6 yes Figure 1 A structural schematic diagram of the central gate box from another perspective.
[0024] Figure 7 yes Figure 1 A schematic diagram of the trigger mechanism.
[0025] Figure 8 This is a three-dimensional structural diagram from another perspective of the present invention.
[0026] Figure 9 yes Figure 1 A schematic diagram of the structure of the second transmission rack in the process.
[0027] Figure 10 yes Figure 1 A schematic diagram of the mechanism of the trigger and the wheel.
[0028] Figure 11 yes Figure 3 A schematic diagram of the internal structure of the lower shell. Detailed Implementation
[0029] The technical solution of the present invention will be further described in detail below through embodiments and in conjunction with the accompanying drawings.
[0030] like Figure 1-6As shown, a prostate stapler device includes a drive handle 1 and a gate box 2 pulverized to the drive handle 1. The drive handle 1 is provided with a mounting groove 11 that cooperates with and fixes the gate box 2. The gate box 2 is provided with a needle slider 21 pulverized to a puncture needle, a wire slider 22 pulverized to the staples and pulverized to the needle slider 21, and an energy storage slider 23 for activating the needle slider 21. The bottom of the mounting groove 11 is provided with multiple transmission grooves 111. The needle slider 21 and the energy storage slider 23 extend into the drive handle 1 through each transmission groove 111. The drive handle 1 is provided with a rotatable disk 12. The end face of the disk 12 is provided with a first arc-shaped protrusion 121 for driving the needle slider 21 and a second arc-shaped protrusion 122 for driving the energy storage slider 23. When the disk 12 rotates, the first arc-shaped protrusion 121 and the second arc-shaped protrusion 122 can respectively push the needle slider 21 and the energy storage slider 23 to move along each transmission groove 111.
[0031] The gate box is mounted in the mounting slot of the drive handle. The bottom of the gate box connects to the puncture needle and the thread, with the thread end having a bundled stud structure. When operating the device, the gate box needs to be charged first. The first pull of the trigger moves the trigger towards the grip, causing the drive wheel to rotate ¼ turn. The first drive rack pushes the energy-accumulating slider to extend into the drive groove on the mounting slot, thus moving the energy-accumulating slider and accumulating energy in the gate box. After charging, pulling the trigger again causes the needle slider to move in the same direction as the thread slider and the energy-accumulating slider, triggering the puncture needle to pierce the prostate wall. The trigger then resets, and the wheel stops. The second pull of the trigger causes the wheel to rotate ¼ turn, pushing the needle slider independently towards the thread slider. Simultaneously, the energy-accumulating slider retracts, exposing the bundled studs inside the puncture needle. One end of the bundled studs (i.e., the thread) remains at the puncture needle's endpoint. The needle extends and then the trigger resets, stopping the wheel. The trigger is then pulled a third time, causing the wheel to rotate ¼ turn. The second arc-shaped convex bar pushes the energy storage slider back, and the needle and thread sliders return to their original positions along with the energy storage slider. At this point, the puncture needle is completely withdrawn from the prostate tissue, while the staple remains on the prostate tissue, and the staple (i.e., the thread) pulls on the prostate lateral wall through the extended blocking portion. Finally, the trigger is pulled a fourth time, causing the wheel to rotate ¼ turn. The cutting line on the gate box cuts the staple (i.e., the thread) and attaches an anchor structure at the cut point, thus engaging with the end that previously pulled on the prostate lateral wall, constricting the prostate lateral wall, physically expanding the prostate passage, and completing the anchoring and cutting operation. Simultaneously, the energy storage slider, needle slider, and thread slider all return to their original positions for reuse. After a single staple insertion, multiple staple insertions may be required depending on the actual situation. A new gate box can be installed in the mounting slot of the drive handle for reuse.
[0032] like Figure 4-6As shown, the gate box 2 includes a lower box body 24 assembled in the mounting groove 11. An energy storage slider 23 is located inside the lower box body 24. A needle slider 21 is disposed adjacent to the energy storage slider 23. An energy storage spring 231 is provided on the side wall of the energy storage slider 23 along the moving direction of the energy storage slider 23. A connecting part 211 extends from the side wall of the needle slider 21 and connects to the end of the energy storage spring 231. A limiting block 25 is provided on one side of the moving endpoint of the energy storage slider 23 corresponding to the moving endpoint of the needle slider 21. A limiting hook 251 for preventing the energy storage slider 23 from automatically resetting is provided on one side of the limiting block 25 facing the energy storage slider 23. A limiting spring 252 connected to the lower box body 24 is provided on the other side of the limiting hook 251. A limiting spring 252 facing the limiting spring 252 is provided on the top surface of the limiting hook 251. The inclined groove 253 is located at position 2. The top of the needle slider 21 is provided with a push rod 212. The end of the push rod 212 bends downward and extends into the inclined groove 253. The middle of the line slider 22 is provided with a strip groove 221 arranged along the moving direction of the needle slider 21. The end of the needle slider 21 is provided with a transmission block 213 extending upward into the strip groove 221. The strip groove 221 is provided with a return spring 222 arranged along the length direction of the strip groove 221. One end of the return spring 222 is connected to the transmission block 213, and the other end of the return spring 222 is connected to the end side wall of the strip groove 221. The end of the line slider 22 away from the needle slider 21 is provided with a protrusion 223. The bottom surface of the lower box 24 is provided with an elastic hook 242 for limiting the return of the line slider 22 and which can float up and down.
[0033] When the trigger is pulled for the first time, the energy storage slider is pushed and moved, pulling open the energy storage spring. The connecting part remains stationary. At this time, the locking hook is about to disengage from the connecting part. When the energy storage is completed, the energy storage slider is locked on the limiting hook of the limiting block. Then the locking hook immediately disengages from the connecting part. The connecting part moves rapidly toward the energy storage slider under the action of the energy storage spring. The connecting part moves synchronously with the needle slider and the line slider until the push rod at the top of the needle slider is locked into the inclined groove on the limiting block. At the same time, the protrusion on the side wall of the line slider is locked on the elastic hook, preventing the line slider from retracting. At this time, the return spring in the strip groove is squeezed and contracted by the transmission block of the needle slider. At this time, the excitation is completed.
[0034] When the trigger is pulled for the second time, the needle slider moves in the direction of the line slider. During the movement of the needle slider, the push rod will push the limiting block along the inclined groove in the direction of the limiting spring. The limiting spring contracts, and the limiting block disengages from the energy storage slider when it moves. The energy storage slider then moves back with the needle slider. At this time, the line slider is still stuck on the elastic hook and remains stationary.
[0035] When the trigger is pulled for the third time, the energy storage slider is pushed. During the movement of the energy storage slider, the transmission of the connecting part through the energy storage spring causes the needle slider and the line slider to move together. When the needle slider moves above the elastic hook, it presses the elastic hook downward, causing the elastic hook to bend downward and disengage from the protrusion on the side wall of the line slider. The line slider can then move back along with the energy storage slider and the needle slider.
[0036] like Figure 2-5 As shown, the drive handle 1 includes an upper housing 13 and a lower housing 14 that are connected and cooperate with each other. A grip portion 141 is provided on the side of the lower housing 14, and a trigger 15 is provided on the adjacent side of the grip portion 141. The trigger 15 includes a transmission section 151 extending into the lower housing 14 and a drive section 152 located outside the lower housing 14 and adjacent to the grip portion 141. The end of the transmission section 151 is rotatably connected to the lower housing 14 and can drive the wheel 12 to rotate intermittently. The lower housing 14 is provided with a mechanism for pushing the energy storage slider 2. 3. The first transmission rack 16 can move in the direction of the trigger 15. The initial position of the connecting part 211 on the side wall of the needle slider 21 corresponds to the lower box 24 and is provided with a locking hook 26 that is rotatably connected to the bottom of the lower box 24. The top surface of the first transmission rack 16 is provided with a limiting groove 162 that is provided along the moving direction of the energy storage slider 23. One end of the locking hook 26 is bent downward into the limiting groove 162, and the other end of the locking hook 26 is bent upward through the lower box 24 and protrudes from the bottom surface of the lower box 24.
[0037] The upper and lower housings are joined together to form a drive handle with the trigger. The trigger is located on the side adjacent to the grip, and the transmission section of the trigger is rotatably connected to the lower housing, allowing the trigger to reciprocate toward the grip. During the energy storage operation, the trigger is continuously pulled, and the drive section of the trigger drives the first transmission rack to move. The first transmission rack pushes the energy storage slider to move to store energy. During the energy storage process, the downward-bent part of the hook moves within the limiting groove until the energy storage is complete. The hook reaches the side wall at the end of the limiting groove. Continuing to pull the trigger allows the end of the limiting groove to push the downward-bent part of the hook to move upward, while the upward-protruding part of the hook moves downward and disengages from the connecting part. The connecting part can then be directly activated after the energy storage is complete.
[0038] like Figure 3 As shown, the lower housing 14 is provided with a first gear 142 that meshes with the first transmission rack 16 and can rotate horizontally. On the side of the first gear 142 opposite to the first transmission rack 16, there is a second transmission rack 17 that is connected to the drive section 152 and meshes with the first gear 142. The lower housing 14 is provided with a first guide bar 161 and a second guide bar 171 that pass through the first transmission rack 16 and the second transmission rack 17 respectively. The first guide bar 161 and the second guide bar 171 are respectively arranged along the moving direction of the first transmission rack 16 and the moving direction of the second transmission rack 17.
[0039] When the drive section of the trigger moves toward the grip, the pin on the drive section is engaged in the slot of the second transmission rack. The drive section always maintains transmission with the second transmission rack. When the drive section moves, it pushes the second transmission rack to move synchronously along the second guide bar through the pin. When the second transmission rack moves, it rotates synchronously through the meshing transmission of the first gear. The first gear then drives the first transmission rack to move synchronously in the opposite direction. The first transmission rack moves toward the direction of the drive section, realizing the energy storage and activation operation of the surgery.
[0040] like Figure 7-9 As shown, the drive section 152 has a vertically penetrating arc-shaped groove 153 near the second transmission rack 17. A pin 154, movable along the arc-shaped trajectory of the groove 153, passes through the arc-shaped groove 153. The side of the second transmission rack 17 has a slot 172 that engages with the pin 154 and is obliquely oriented towards the gripping part 141. A rotating shaft 155 passes through the drive section 152 at the center of the arc-shaped groove 153. A connecting block 156 is provided on the top surface of the drive section 152 at the end of the rotating shaft 155 and the end of the pin 154. A protrusion 157 is provided on the connecting block 156. The upper housing 13 has a corresponding part on the second transmission rack 17. A limiting plate 131 is provided above the 7 to guide the protrusion 157 and tilt toward the gripping part 141. The drive section 152 is provided with a movable groove 158 for the rotating shaft 155 to pass through. One end of the inner arc surface of the arc groove 153 is provided with a retaining groove 159 that cooperates with the movable groove 158 to lock the rotating shaft 155 and the pin 154. A torsion spring 150 is sleeved on the rotating shaft 155. One end of the torsion spring 150 is connected to the pin 154, and the other end of the torsion spring 150 is connected to the drive section 152. The retaining groove 159 is located at the outward end of the arc groove 153. The line direction connecting the movable groove 158 and the retaining groove 159 is the same as the radius direction of the arc trajectory of the arc groove 153.
[0041] The aforementioned movable groove is a strip-shaped structure. When the pin moves, the rotating shaft moves synchronously within the movable groove along with the pin. As the drive section moves towards the gripping part, the pin remains within the groove, maintaining a pushing effect on the second transmission rack. When the pin reaches the location of the limiting plate, it is positioned in the middle of the arc-shaped groove. The pin, limited by the arc-shaped groove and guided by the limiting plate, continues to move along the arc-shaped groove towards the slot. During this movement, the torsion spring maintains a force on the pin until the operation is completed. After activation, the pin disengages from the slot and engages in the groove of the arc-shaped groove. The rotating shaft connected to the pin via the connecting block moves synchronously to one side within the movable groove as the pin moves. The torsion spring prevents the pin from automatically disengaging from the movable groove. At this point, the pin disengages from the slot of the second transmission rack. When the drive handle needs to be used again, push the protrusion on the top of the connecting block to disengage the pin from the groove and return it to the arc-shaped groove. The pin then automatically returns to its original position and engages in the slot of the second transmission rack through the action of the torsion spring.
[0042] like Figure 10-11 As shown, the bottom center of the wheel 12 is rotatably connected to the lower housing 14. The bottom center of the wheel 12 is provided with a second gear 123 that is rotatably connected to the lower housing 14 and can drive the wheel 12 to rotate in one direction. The transmission section 151 of the trigger 15 is provided with an arc-shaped tooth set 1511 near the side of the second gear 123. The arc-shaped tooth set 1511 is partially meshed with the second gear 123. The bottom surface of the wheel 12 is provided with a ratchet 124 that abuts against the end face of the second gear 123. The side wall of the second gear 123 extends out of a connecting arm 125 that can drive the ratchet 124 to rotate in one direction. The bottom surface of the wheel 12 is provided with a helical tooth ring 126 corresponding to the circumference of the ratchet 124. The bottom surface of the lower housing 14 is provided with a blocking strip 143 that cooperates with the helical tooth ring 126 to restrict the rotation of the wheel 12 in one direction.
[0043] When the trigger is pulled, the arc-shaped gear set on the transmission section drives the wheel. The arc-shaped gear set meshes with the second gear on the bottom surface of the wheel. The arc-shaped gear set drives the wheel to rotate ¼ turn through the second gear. When the arc-shaped gear set drives the second gear to rotate, the second gear drives the ratchet to rotate through the connecting arm. The ratchet drives the wheel to rotate, and the stop bar can jump along the helical gear ring. When the trigger is reset, the second gear rotates synchronously in the opposite direction. The connecting arm loses its transmission to the ratchet. The ratchet stops rotating, and the wheel cannot rotate due to the block bar blocking the helical gear ring. When the trigger is pulled again, the second gear can drive the ratchet again and drive the wheel to rotate ¼ turn again.
Claims
1. A prostate stapler device, characterized in that; The device includes a drive handle (1) and a gate box (2) connected to the drive handle (1). The drive handle (1) has a mounting groove (11) that cooperates with and fixes the gate box (2). The gate box (2) contains a needle slider (21) connected to the puncture needle, a wire slider (22) connected to the staple wire and connected to the needle slider (21), and an energy storage slider (23) for activating the needle slider (21). The bottom of the mounting groove (11) has multiple transmission grooves (111). The needle slider (21) and the energy storage slider (23) extend into the drive handle (1) through the respective transmission grooves (111). The drive handle (1) contains a rotatable wheel (12). The end face of the wheel (12) has a first arc-shaped protrusion (121) for driving the needle slider (21) and a rotatable wheel (23) for driving the energy storage slider (23). The second arc-shaped protrusion (122) can push the needle slider (21) and the energy storage slider (23) to move along the respective transmission grooves (111) when the wheel (12) rotates. The gate box (2) includes a lower box body (24) assembled in the mounting groove (11), the energy storage slider (23) is located in the lower box body (24), the needle slider (21) is disposed on the adjacent side of the energy storage slider (23), the side wall of the energy storage slider (23) is provided with an energy storage spring (231) arranged along the moving direction of the energy storage slider (23), and the side wall of the needle slider (21) extends out a connecting part (211) that connects to the end of the energy storage spring (231); A limiting block (25) is provided on one side of the moving end point of the energy storage slider (23) corresponding to the moving end point of the needle slider (21). A limiting hook (251) for preventing the energy storage slider (23) from automatically resetting is provided on one side of the limiting block (25). A limiting spring (252) connected to the lower box (24) is provided on the other side of the limiting hook (251). The top surface of the limiting hook (251) is provided with an inclined groove (253) that is inclined toward the position of the limiting spring (252). The top of the needle slider (21) is provided with a push rod (212). The end of the push rod (212) bends downward and extends into the inclined groove (253). The middle part of the line slider (22) is provided with a strip groove (221) arranged along the moving direction of the needle slider (21). The end of the needle slider (21) is provided with a transmission block (213) that extends upward into the strip groove (221). The groove (221) is provided with a return spring (222) arranged along the length of the groove (221). One end of the return spring (222) is connected to the transmission block (213), and the other end of the return spring (222) is connected to the end side wall of the groove (221). The end of the line slider (22) away from the needle slider (21) is provided with a protrusion (223). The bottom surface of the lower box (24) is provided with an elastic hook (242) for limiting the return of the line slider (22) and which can float up and down.
2. The prostate stapler device according to claim 1, characterized in that: The drive handle (1) includes an upper housing (13) and a lower housing (14) that are connected and cooperate with each other. The lower housing (14) has a grip (141) on its side and a trigger (15) on its adjacent side. The trigger (15) includes a transmission section (151) extending into the lower housing (14) and a drive section (152) located outside the lower housing (14) and adjacent to the grip (141). The end of the transmission section (151) is rotatably connected to the lower housing (14) and can drive the wheel (12) to rotate intermittently. The lower housing (14) has a first transmission rack (16) for pushing the energy storage slider (23) and can move in the direction of the trigger (15). The initial position of the connecting part (211) on the side wall of the needle slider (21) corresponds to the lower box (24). The lower part is provided with a locking hook (26) that is rotatably connected to the bottom of the lower box (24). The top surface of the first transmission rack (16) is provided with a limiting groove (162) arranged along the moving direction of the energy storage slider (23). One end of the locking hook (26) is bent downward into the limiting groove (162), and the other end of the locking hook (26) is bent upward through the lower box (24) and protrudes from the bottom surface of the lower box (24).
3. The prostate stapler device according to claim 2, characterized in that: The lower housing (14) is provided with a first gear (142) that meshes with the first transmission rack (16) and can rotate horizontally. On the side of the first gear (142) opposite to the first transmission rack (16), there is a second transmission rack (17) that is connected to the drive section (152) and meshes with the first gear (142). The lower housing (14) is provided with a first guide bar (161) and a second guide bar (171) that pass through the first transmission rack (16) and the second transmission rack (17) respectively. The first guide bar (161) and the second guide bar (171) are respectively arranged along the moving direction of the first transmission rack (16) and the moving direction of the second transmission rack (17).
4. The prostate stapler device according to claim 3, characterized in that: The drive section (152) has a vertically penetrating arc-shaped groove (153) near the second transmission rack (17). A pin (154) that can move along the arc-shaped trajectory of the arc-shaped groove (153) passes through the arc-shaped groove (153). The side of the second transmission rack (17) has a slot (172) that mates with the pin (154) and is obliquely oriented towards the gripping part (141). A rotating shaft (155) passes through the drive section (152) at the center of the arc-shaped groove (153). A connecting block (156) is provided on the top surface of the drive section (152) at the end of the rotating shaft (155) and the end of the pin (154). A protrusion (157) is provided on the connecting block (156). A corresponding protrusion (157) is provided on the upper housing (13) above the second transmission rack (17). A limiting plate (131) that guides and tilts toward the grip (141).
5. The prostate stapler device according to claim 4, characterized in that: The drive section (152) is provided with a movable groove (158) for the rotating shaft (155) to pass through. One end of the inner arc surface of the arc groove (153) is provided with a retaining groove (159) that cooperates with the movable groove (158) to lock the rotating shaft (155) and the pin (154). A torsion spring (150) is sleeved on the rotating shaft (155). One end of the torsion spring (150) is connected to the pin (154), and the other end of the torsion spring (150) is connected to the drive section (152). The retaining groove (159) is located at the outward end of the arc groove (153). The direction of the line connecting the movable groove (158) and the retaining groove (159) is the same as the radius direction of the arc trajectory of the arc groove (153).
6. The prostate stapler device according to claim 2, characterized in that: The wheel (12) is rotatably connected to the lower housing (14) at its bottom center. A second gear (123) is provided at the bottom center of the wheel (12) and is rotatably connected to the lower housing (14), allowing the wheel (12) to rotate unidirectionally. An arc-shaped gear set (1511) is provided on the side wall of the transmission section (151) of the trigger (15) near the side of the second gear (123). The arc-shaped gear set (1511) meshes with a portion of the teeth of the second gear (123). A ratchet (124) is provided on the bottom surface of the wheel (12) and abuts against the end face of the second gear (123). A connecting arm (125) extends from the side wall of the second gear (123) and can drive the ratchet (124) to rotate unidirectionally. The bottom surface of the wheel (12) corresponds to the ratchet (124). The lower housing (14) is provided with a helical gear ring (126) on its periphery, and a blocking strip (143) is provided on the bottom surface of the lower housing (14) to cooperate with the helical gear ring (126) to restrict the unidirectional rotation of the wheel (12).