Drive handle for a prostatic clip device

Abstract

The application relates to a driving handle for prostate staples, which comprises an upper shell and a lower shell connected with each other, the side of the lower shell is provided with a holding part, the adjacent side of the holding part is provided with a trigger, the trigger comprises a transmission section extending into the lower shell and a driving section located outside the lower shell and at the adjacent side of the holding part, a wheel disc for driving the staples into the prostate tissue is arranged in the lower shell, the end of the transmission section is rotationally connected with the lower shell and can drive the wheel disc to rotate intermittently, a first transmission rack for exciting the lancet and moving towards the direction where the trigger is located is arranged in the lower shell, when the trigger moves towards the holding part, the driving section can drive the first transmission rack to move towards the direction where the transmission section is located. The application has the characteristics that the operation can be completed by the single hand of the doctor, the operation is simple and convenient, the doctor can operate different surgical instruments with both hands at the same time, the operation efficiency is improved, the operation is more convenient and the like.

Description

Technical Field

[0001] This invention relates to a drive handle for prostate staples, 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, "staples" (i.e., 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" (i.e., staples) can "bind" the prostate, widen the urethra, and "tighten" the enlarged prostate gland in the urethra without removing the tissue, relieving the pressure of the gland on the urethra and restoring urethral patency.

[0004] Existing treatment tools include modules and handles configured to accommodate the modules. The handle and module assembly push the bundle of staples for prostate staple manipulation. When inserting the staples into the prostate tissue, the handle needs to be pre-energized to provide kinetic energy for the insertion. In existing technologies, the handle is usually pre-energized during manufacturing so that it can be directly activated during surgery. However, during surgery, because the puncture needle needs to be inserted into the prostate canal to find the correct position, the pre-energized handle can cause mis-activation, leading to surgical errors and posing a danger. Summary of the Invention

[0005] The purpose of this invention is to provide a driving handle for prostate staples, which solves the problems of accidental activation and surgical errors in the prior art.

[0006] The above-mentioned technical objective of the present invention is mainly achieved through the following technical solution: a driving handle for prostate staples, comprising an upper housing and a lower housing connected and mating with each other, a gripping part provided on the side of the lower housing, a trigger provided on the adjacent side of the gripping part, the trigger comprising a transmission section extending into the lower housing and a driving section located outside the lower housing and adjacent to the gripping part, a wheel for driving staples into prostate tissue provided inside the lower housing, the end of the transmission section being rotatably connected to the lower housing and capable of driving the wheel to rotate intermittently, a first transmission rack for activating a needle and movable in the direction of the trigger provided inside the lower housing, the trigger moving towards the gripping part, when the trigger moves... The drive section can drive the first transmission rack to move in the direction of the transmission section; the trigger is connected to the lower housing through the transmission section and can rotate, so as to drive the wheel to rotate with the trigger. The wheel can then drive the staples to be gradually driven into the prostate tissue through multiple rotations. The drive section of the trigger can synchronously drive the first transmission rack to move, so that the first transmission rack moves towards the transmission section and realizes energy storage. Through the synchronous drive and cooperation of the drive section and the transmission section, this handle can be prepared for energy storage by the doctor's operation. It can avoid accidental triggering when the puncture needle enters the prostate channel and finds the right position, ensuring the safety of the operation, avoiding surgical operation errors, and ensuring the normal and stable operation of the surgery.

[0007] Preferably, the lower housing is provided with a first gear that meshes with the first transmission rack and can rotate horizontally. 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 second transmission rack can be driven by the drive section, so that the second transmission rack drives the first gear and drives the first transmission rack to move through the first gear, thereby achieving a stable transmission effect on the trigger and the first transmission rack.

[0008] Preferably, the lower housing is provided with a first guide bar and a second guide bar that pass through the first transmission rack and the second transmission rack respectively. The first guide bar and the second guide bar are respectively arranged along the moving direction of the first transmission rack and the moving direction of the second transmission rack. The first guide bar and the second guide bar can guide and position the first transmission rack and the second transmission rack respectively, and support the first transmission rack and the second transmission rack to move stably.

[0009] Preferably, the drive section has a through-groove arc-shaped groove near the second transmission rack, and a pin that can move along the arc-shaped trajectory of the groove passes through the arc-shaped groove. The side of the second transmission rack has a slot that cooperates with the pin and is obliquely arranged in the direction of the gripping part. The 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 be locked in the slot, so as to drive the second transmission rack to move synchronously with the movement of the drive section.

[0010] Preferably, a rotating shaft is provided at the center of the arc-shaped groove on the drive section. 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 plate is provided on the upper housing above the second transmission rack, which can guide the protrusion and is inclined towards the gripping part. The rotating shaft is connected to the pin through the connecting block to facilitate the pin to drive the rotating shaft. When the pin passes the limiting plate, the protrusion is limited by the limiting effect of the limiting plate to drive the pin to move in the arc-shaped groove and gradually separate from the groove. When the pin separates from the groove, the pin and the rotating shaft can be controlled by the protrusion and the movement of the rotating shaft and the pin can be controlled by the protrusion to reconnect the pin with the groove.

[0011] 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 is provided with a retaining groove that cooperates with the movable groove to lock the rotating shaft and the pin. A torsion spring is sleeved on the rotating shaft. One end of the torsion spring is connected to the pin, and the other end of the torsion spring is connected to the drive section. The above-mentioned movable groove and retaining groove are provided so that when the pin moves to the end of the arc-shaped groove, it can automatically be locked into the retaining groove. The rotating shaft moves in the movable groove under the action of the connecting block, so that the pin is positioned in the retaining groove. When the pin is moved out of the retaining groove, the pin can automatically move to the other end of the arc-shaped groove under the action of the torsion spring, and the pin is then locked back into the groove to connect the drive section and the second transmission rack.

[0012] Preferably, the slot is located at the outward end of the arc-shaped groove, and the direction of the line connecting the movable groove and the slot is the same as the radius direction of the arc trajectory of the arc-shaped groove. When the pin is inserted into the slot, the axis of the pin coincides with the line connecting the movable groove and the slot. Thus, when the pin moves to the slot at the end of the arc-shaped groove, the pin slides into the slot under 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.

[0013] Preferably, the top surface of the wheel is provided with two first arc-shaped protrusions and a second arc-shaped protrusion, which are eccentrically positioned relative to the wheel. The center of the bottom surface of the wheel is rotatably connected to the lower housing. The arrangement of the first and second arc-shaped protrusions can gradually drive the bundle studs into the prostate tissue during the rotation of the wheel, thereby stabilizing the transmission.

[0014] Preferably, a second gear is provided at the center of the bottom surface of the wheel, which is rotatably connected to the lower housing and can drive the wheel to rotate in one direction. An arc-shaped tooth set is provided on the side wall of the transmission section of the trigger, which is close to the side of the second gear. The arc-shaped tooth set is meshed with the second gear. The second gear can be driven to rotate by the arc-shaped tooth set of the transmission section, so that the second gear can drive the wheel to rotate synchronously, and the wheel can drive the first arc-shaped protrusion and the second arc-shaped protrusion to rotate gradually, thereby realizing structural transmission.

[0015] Preferably, the bottom surface of the wheel is provided with a ratchet that abuts against the end face of the second gear. The side wall of the second gear extends out a connecting arm that can drive the ratchet to rotate in one direction. The bottom surface of the wheel is provided with a helical gear ring corresponding to the circumference of the ratchet. The bottom surface of the lower housing is provided with a blocking strip that cooperates with the helical gear ring to restrict the unidirectional rotation of the wheel. 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. The wheel remains stationary due to the cooperation of the helical gear ring and the blocking strip, thereby achieving the reset of the second gear and stopping the wheel. The second gear can continue to drive the ratchet to rotate in the same direction. Then, the reciprocating rotation of the trigger achieves the intermittent rotation drive of the wheel.

[0016] Therefore, the present invention has the advantages of avoiding accidental activation of the puncture needle, ensuring safety during operation, avoiding surgical errors, and ensuring normal and stable surgical operation. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the structure of the present invention.

[0018] Figure 2 yes Figure 1 A partial structural diagram.

[0019] Figure 3 yes Figure 1 A schematic diagram of the trigger mechanism.

[0020] Figure 4 This is a three-dimensional structural diagram from another perspective of the present invention.

[0021] Figure 5 yes Figure 1 A schematic diagram of the structure of the second transmission rack in the process.

[0022] Figure 6 yes Figure 1 A schematic diagram of the mechanism involving the trigger and the wheel.

[0023] Figure 7 yes Figure 3 A schematic diagram of the internal structure of the lower shell. Detailed Implementation

[0024] The technical solution of the present invention will be further described in detail below through embodiments and in conjunction with the accompanying drawings.

[0025] like Figure 1-2As shown, a drive handle for prostate staples includes an upper housing 1 and a lower housing 2 that are connected and fitted together. The lower housing 2 has a gripping part 21 on its side and a trigger 3 on its adjacent side. The trigger 3 includes a transmission section 31 extending into the lower housing 2 and a drive section 32 located outside the lower housing 2 and adjacent to the gripping part 21. The lower housing 2 has a wheel 23 for driving staples into prostate tissue. The end of the transmission section 31 is rotatably connected to the lower housing 2 and can drive the wheel 23 to rotate intermittently. The lower housing 2 has a first transmission rack 24 for activating the needle and can move in the direction of the trigger 3. When the trigger 3 moves toward the gripping part 21, the drive section 32 can drive the first transmission rack 24 to move in the direction of the transmission section 31.

[0026] The upper and lower housings are joined together to form a drive handle with the trigger. The trigger is located adjacent to the grip, and the drive section of the trigger is rotatably connected to the lower housing, allowing the trigger to reciprocate toward the grip. When the trigger is pulled for the first time, causing it to move toward the grip, the drive section of the trigger drives the first transmission rack to move, performing an energy storage operation. After energy storage is complete, the first transmission rack continues to move to stimulate the needle to pierce the prostate lateral wall. Subsequently, the trigger separates from the first transmission rack, the trigger resets, and the wheel does not rotate. When the trigger is pulled again, the wheel rotates ¼ turn, and the first arc-shaped protrusion drives the puncture needle to retract incompletely, exposing the bundle. The needle is inserted into a puncture site, with one end of the stamens extending outwards. The trigger is then reset, and the wheel stops rotating. When the trigger is pulled again, the wheel rotates ¼ turn, and the second arc-shaped protrusion drives the puncture needle to completely withdraw from the prostate tissue. At this point, the stamens remain on the prostate tissue, and the stamens (i.e., the thread) pull on the prostate lateral wall through the extended obstruction. Finally, when the trigger is pulled a fourth time, the wheel rotates ¼ turn, the cutting line cuts the stamens (i.e., the thread), and an anchor structure is attached at the cut point. This engages 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.

[0027] like Figure 2-3 As shown, the lower housing 2 is provided with a first gear 25 that meshes with the first transmission rack 24 and can rotate horizontally. On the side of the first gear 25 opposite to the first transmission rack 24, there is a second transmission rack 26 that is connected to the drive section 32 and meshes with the first gear 25. The lower housing 2 is provided with a first guide bar 241 and a second guide bar 261 that pass through the first transmission rack 24 and the second transmission rack 26 respectively. The first guide bar 241 and the second guide bar 261 are respectively arranged along the moving direction of the first transmission rack 24 and the moving direction of the second transmission rack 26.

[0028] 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.

[0029] like Figure 2-5 As shown, the drive section 32 has a vertically penetrating arc-shaped groove 321 near the second transmission rack 26. A pin 322, which can move along the arc-shaped trajectory of the arc-shaped groove 321, passes through the arc-shaped groove 321. The side of the second transmission rack 26 has a slot 262 that cooperates with the pin 322 and is obliquely oriented towards the gripping part 21. A rotating shaft 323 passes through the drive section 32 at the center of the arc-shaped groove 321. The ends of the rotating shaft 323 and the ends of the pin 322 are provided with connecting blocks 324 on the top surface of the drive section 32. The connecting blocks 324 have protrusions 325. The upper housing 1 is provided with a connecting block 324 corresponding to the second transmission rack 26. A limiting plate 11 is provided above to guide the protrusion 325 and tilt toward the gripping part 21. The drive section 32 is provided with a movable groove 326 for the rotating shaft 323 to pass through. One end of the inner arc surface of the arc groove 321 is provided with a retaining groove 327 that cooperates with the movable groove 326 to lock the rotating shaft 323 and the pin 322. A torsion spring 328 is sleeved on the rotating shaft 323. One end of the torsion spring 328 is connected to the pin 322, and the other end of the torsion spring 328 is connected to the drive section 32. The retaining groove 327 is located at the outward end of the arc groove 321. The direction of the line connecting the movable groove 326 and the retaining groove 327 is the same as the radius direction of the arc trajectory of the arc groove 321.

[0030] 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.

[0031] like Figure 2 , 6 As shown in Figure 7, the top surface of the wheel 23 is provided with two first arc-shaped protrusions 231 and second arc-shaped protrusions 232 that are eccentrically arranged relative to the wheel 23. The bottom center of the wheel 23 is rotatably connected to the lower housing 2. The bottom center of the wheel 23 is provided with a second gear 233 that is rotatably connected to the lower housing 2 and can drive the wheel 23 to rotate in one direction. The transmission section 31 of the trigger 3 is provided with an arc-shaped gear set 311 near the side of the second gear 233. The arc-shaped gear set 311 is partially meshed with the second gear 233. The bottom surface of the wheel 23 is provided with a ratchet 234 that abuts against the end face of the second gear 233. The side wall of the second gear 233 extends out to form a connecting arm 235 that can drive the ratchet 234 to rotate in one direction. The bottom surface of the wheel 23 is provided with a helical gear ring 236 corresponding to the circumference of the ratchet 234. The bottom surface of the lower housing 2 is provided with a blocking strip 27 that cooperates with the helical gear ring 236 to restrict the rotation of the wheel 23 in one direction.

[0032] 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 drive handle for prostate staples, comprising an upper housing (1) and a lower housing (2) that are interconnected and fitted together, characterized in that: The lower housing (2) has a gripping part (21) on its side, and a trigger (3) is provided on the adjacent side of the gripping part (21). The trigger (3) includes a transmission section (31) extending into the lower housing (2) and a drive section (32) located outside the lower housing (2) and adjacent to the gripping part (21). The lower housing (2) has a wheel (23) for inserting the staples into the prostate tissue. The end of the transmission section (31) is rotatably connected to the lower housing (2) and can drive the wheel (23) to rotate intermittently. The lower housing (2) has a first transmission rack (24) for activating the needle and can move toward the trigger (3). When the trigger (3) moves toward the gripping part (21), the drive section (32) can drive the first transmission rack (24) toward the gripping part (21). The transmission section (31) moves in the direction of its location; the lower housing (2) is provided with a first gear (25) that meshes with the first transmission rack (24) and can rotate horizontally, and a second transmission rack (26) that is connected to the drive section (32) and meshes with the first gear (25) is provided on the side of the first gear (25) opposite to the first transmission rack (24); the drive section (32) is provided with an arc-shaped groove (321) that runs vertically through the second transmission rack (26) at a position close to the second transmission rack (26), and a pin (322) that can move along the arc-shaped trajectory of the arc-shaped groove (321) passes through the arc-shaped groove (321), and a slot (262) that cooperates with the pin (322) and is obliquely arranged in the direction of the gripping part (21) is provided on the side of the second transmission rack (26).

2. The driving handle for the prostate staples according to claim 1, characterized in that: The lower housing (2) is provided with a first guide bar (241) and a second guide bar (261) that pass through the first transmission rack (24) and the second transmission rack (26) respectively. The first guide bar (241) and the second guide bar (261) are respectively arranged along the moving direction of the first transmission rack (24) and the moving direction of the second transmission rack (26).

3. The driving handle for the prostate staples according to claim 1, characterized in that: A rotating shaft (323) is provided on the drive section (32) at the center of the arc groove (321). A connecting block (324) is provided on the top surface of the drive section (32) at the end of the rotating shaft (323) and the end of the pin (322). A protrusion (325) is provided on the connecting block (324). A limiting plate (11) is provided on the upper housing (1) above the second transmission rack (26) to guide the protrusion (325) and tilt toward the gripping part (21).

4. The driving handle for the prostate staples according to claim 3, characterized in that: The drive section (32) is provided with a movable groove (326) for the rotating shaft (323) to pass through. One end of the inner arc surface of the arc groove (321) is provided with a retaining groove (327) that cooperates with the movable groove (326) to lock the rotating shaft (323) and the pin (322). A torsion spring (328) is sleeved on the rotating shaft (323). One end of the torsion spring (328) is connected to the pin (322), and the other end of the torsion spring (328) is connected to the drive section (32).

5. The driving handle for the prostate staples according to claim 4, characterized in that: The slot (327) is located at the outward end of the arc-shaped groove (321), and the line connecting the movable groove (326) and the slot (327) is in the same direction as the radius of the arc-shaped trajectory of the arc-shaped groove (321).

6. The driving handle for the prostate staples according to claim 1, characterized in that: The top surface of the wheel (23) is provided with two first arc-shaped protrusions (231) and second arc-shaped protrusions (232) that are eccentrically arranged relative to the wheel (23). The bottom center of the wheel (23) is rotatably connected to the lower housing (2).

7. The driving handle for the prostate staples according to claim 6, characterized in that: The bottom center of the wheel (23) is provided with a second gear (233) that is rotatably connected to the lower housing (2) and can drive the wheel (23) to rotate in one direction. The transmission section (31) of the trigger (3) is provided with an arc-shaped tooth group (311) near the side of the second gear (233). The arc-shaped tooth group (311) is meshed with a portion of the teeth of the second gear (233).

8. The driving handle for the prostate staples according to claim 7, characterized in that: The bottom surface of the wheel (23) is provided with a ratchet (234) that abuts against the end face of the second gear (233). The side wall of the second gear (233) extends out a connecting arm (235) that can drive the ratchet (234) to rotate in one direction. The bottom surface of the wheel (23) is provided with a helical gear ring (236) corresponding to the circumference of the ratchet (234). The bottom surface of the lower housing (2) is provided with a blocking strip (27) that cooperates with the helical gear ring (236) to restrict the unidirectional rotation of the wheel (23).

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