Conveyor handle and conveyor

Abstract

The present invention provides a conveyor handle and a conveyor, which relates to the technical field of medical devices. The conveyor handle provided by the present invention includes a driving member, a transmission assembly, a main cable fixing member and a counting assembly. The driving member is connected to the main cable fixing member through the transmission assembly to drive the main cable fixing member to rotate around its own axis, and the main cable fixing member is used to connect with the rotating cable; the counting assembly includes a follower and a limiter, the follower is arranged on the main cable fixing member, and can rotate synchronously with the main cable fixing member, the limiter has a first position and a second position, when the limiter is in the first position, the limiter can limit the rotation of the main cable fixing member through the follower, and when the limiter is in the second position, the limiter unlocks the follower. The conveyor handle provided by the present invention alleviates the technical problem that the operator in the related art mainly judges the implanted length of the fixator based on the number of revolutions of the conveyor, which easily leads to inaccurate implantation length judgment.

Description

Technical Field

[0001] The present invention relates to the technical field of medical devices, and in particular to a conveyor handle and a conveyor. Background Art

[0002] Endovascular repair therapy, also known as aortic endovascular repair, is a new type of minimally invasive endovascular surgery developed in recent years. It is performed by making an incision in the distal end of the aorta, such as the femoral artery, and pushing a delivery system loaded with a covered stent to the lesion site. The covered stent is deployed to isolate the lesion artery and rebuild the blood supply channel, thereby reducing the pressure of the aneurysm body and achieving the purpose of treatment. Endovascular repair therapy is a completely interventional treatment that does not require thoracotomy or laparotomy. Compared with open treatment and hybrid surgery, it has the advantages of less surgical trauma, shorter operation time, and faster postoperative recovery. Since the 1990s, the emergence and development of minimally invasive interventional endovascular repair therapy has gradually replaced open surgery and become the first choice for the treatment of aortic dissection and aortic aneurysm.

[0003] Although traditional aortic endovascular repair has obvious advantages, it also has at least the following disadvantages: interventional treatment of aortic dissection and aneurysm is still insufficient. After the stent is released, it is attached to the inside of the human blood vessel through its own elasticity. Under the impact of high-pressure and high-speed blood flow, there is a risk of internal leakage and stent displacement. Internal leakage and / or stent displacement may cause the tumor to fail to shrink after surgery or continue to grow, making the interventional surgery unable to achieve the expected treatment effect and even endangering the patient's life. For situations where internal leakage or stent displacement has occurred, there is currently a method that mechanically implants a short-segment graft (i.e., implants a fixator) to increase the anchoring length, so that the membrane and the blood vessel wall fit more closely, thereby eliminating stent displacement or internal leakage.

[0004] In the related art, the operator implants the fixator into the blood vessel wall through a conveyor. During the implantation process, the operator first rotates the fixator into the blood vessel wall for a certain length and then uses an instrument to check whether the fixator is skewed. If it is not skewed, the fixator is implanted into the blood vessel wall. However, the operator mainly judges the implanted length of the fixator based on the number of revolutions of the conveyor, which may easily lead to inaccurate judgment of the implanted length. Summary of the invention

[0005] The object of the present invention is to provide a conveyor handle and a conveyor to alleviate the technical problem in the related art that the operator mainly judges the implanted length of the fixator based on the approximate number of rotations of the conveyor, which easily leads to inaccurate judgment of the implanted length.

[0006] In a first aspect, the conveyor handle provided by the present invention comprises: a driving member, a transmission assembly, a main cable fixing member and a counting assembly, wherein the driving member is transmission-connected to the main cable fixing member through the transmission assembly to drive the main cable fixing member to rotate around its own axis, and the main cable fixing member is used to connect with the rotating cable;

[0007] The counting assembly includes a follower and a limiter, wherein the follower is disposed on the main cable fixing member and can rotate synchronously with the main cable fixing member, and the limiter has a first position and a second position. When the limiter is located at the first position, the limiter can limit the rotation of the main cable fixing member through the follower, and when the limiter is located at the second position, the limiter unlocks the follower.

[0008] Furthermore, the follower includes a sleeve and a counting protrusion, the sleeve is sleeved on the main cable fixing member, and the counting protrusion is arranged on the outer peripheral wall of the sleeve; the limiting member includes a limiting plate, and the limiting plate is slidably connected to the shell of the conveyor handle.

[0009] Furthermore, the counting assembly also includes a slide plate and a slide rail, the slide rail is installed on the shell, the slide plate is slidably matched with the slide rail, and the limit plate is installed on the slide plate.

[0010] Furthermore, the counting assembly further comprises an elastic member, wherein the elastic member is respectively connected to the limit plate and the slide rail, and the elastic member enables the limit plate to have a movement tendency to be located at the first position.

[0011] Furthermore, the follower also includes a reset handwheel, which is sleeved on the main cable fixing member and fixedly connected to the sleeve.

[0012] Furthermore, the conveyor handle also includes an anti-reversal component, the follower is connected to the main cable fixing member through a one-way bearing, and the anti-reversal component is connected to the follower; when the main cable fixing member rotates along a first direction, the inner ring and the outer ring of the one-way bearing are locked to drive the follower to rotate along the first direction, and the anti-reversal component is used to prevent the follower from rotating along a second direction, and the first direction is opposite to the second direction.

[0013] Furthermore, the anti-reversal assembly includes a ratchet and a pawl, the ratchet is fixedly sleeved on the follower, and the pawl cooperates with the ratchet to prevent the follower from rotating along the second direction.

[0014] Furthermore, the transmission assembly includes a gear transmission group, and the gear transmission group is connected to the driving member and the main cable fixing member respectively.

[0015] Furthermore, the driving member includes a driving hand wheel, and the driving hand wheel is transmission-connected to the gear transmission group.

[0016] In a second aspect, the conveyor provided by the present invention comprises a rotating cable, a shift fork and the above-mentioned conveyor handle, wherein the rotating cable is connected to a main cable fixing member in the conveyor handle, and the shift fork is connected to an end of the rotating cable away from the main cable fixing member.

[0017] When the conveyor handle provided by the present invention is used for surgery, during the nailing process, the driving member drives the rotating cable and the follower to rotate along the first direction through the transmission assembly, so that the rotating cable drives the fixer to rotate into the blood vessel wall. During the rotation of the main cable fixing member, the limiter is located at the first position. When the main cable fixing member drives the fixer to rotate a certain number of circles, for example, one circle or one-half circle, the follower abuts against the limiter, restricting the main cable fixing member from continuing to rotate, and then the position of the limiter is adjusted to the second position, the follower is unlocked, so that the main cable fixing member can continue to rotate along the first direction. After the follower rotates past the limiter, the limiter is adjusted to the first position again. When the follower rotates with the main cable fixing member again until it abuts against the limiter, the above operation is repeated. The operator can obtain the number of circles that the main cable fixing member drives the fixer to rotate through the rotating cable according to the number of contacts between the follower and the limiter, and accurately obtain the number of circles that the fixer rotates, so as to make the implantation length of the fixer more accurately judged. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the specific embodiments of the present invention or the technical solutions in the related technologies, the drawings required for use in the specific embodiments or the related technical descriptions will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0019] Figure 1 An exploded schematic diagram of a conveyor handle provided by an embodiment of the present invention;

[0020] Figure 2 A schematic diagram of the internal structure of a conveyor handle provided by an embodiment of the present invention;

[0021] Figure 3 A schematic diagram of the structure of a rotating cable in a conveyor provided by an embodiment of the present invention;

[0022] Figure 4 A schematic diagram of the structure of a shift fork in a conveyor provided in an embodiment of the present invention;

[0023] Figure 5 A schematic diagram of the cooperation between a shift fork and a receiving member in a conveyor provided in an embodiment of the present invention.

[0024] Icons: 100 - driving hand wheel; 210 - driving spur gear; 220 - first driven spur gear; 230 - second driven spur gear; 240 - driving bevel gear; 250 - driven bevel gear; 300 - main cable fixing piece; 410 - follower; 411 - sleeve; 412 - counting protrusion; 413 - reset hand wheel; 420 - slide plate; 421 - adjustment button; 430 - slide rail; 440 - elastic piece; 450 - single bearing; 510 - ratchet; 610 - main cable; 620 - flexible cable; 630 - cable connector; 700 - shift fork; 710 - shift fork connecting column; 720 - shift fork plane; 800 - delivery outer tube; 810 - exhaust member; 811 - exhaust pipe; 820 - accommodation member; 910 - handle upper shell; 911 - first oblong hole; 912 - second oblong hole; 913 - third oblong hole; 920 - handle lower shell. DETAILED DESCRIPTION

[0025] The technical solution of the present invention will be described clearly and completely below in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0026] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0027] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0028] The conveyor handle provided in the embodiment of the present invention includes: a driving member, a transmission assembly, a main cable fixing member 300 and a counting assembly. The driving member is transmission-connected to the main cable fixing member 300 through the transmission assembly to drive the main cable fixing member 300 to rotate around its own axis. The main cable fixing member 300 is used to connect with the rotating cable; the counting assembly includes a follower 410 and a limiter. The follower 410 is provided on the main cable fixing member 300 and can rotate synchronously with the main cable fixing member 300. The limiter has a first position and a second position. When the limiter is in the first position, the limiter limits the rotation of the main cable fixing member 300 through the follower 410. When the limiter is in the second position, the limiter unlocks the follower 410.

[0029] Specifically, the conveyor handle provided in the embodiment of the present invention further includes a housing and a bracket, such as Figure 1 As shown, the housing includes a handle upper shell 910 and a handle lower shell 920, and the handle upper shell 910 and the handle lower shell 920 are connected by screws, and a receiving space is formed between the two. The bracket is fixedly installed on the handle lower shell 920, the driving member and the transmission assembly are both installed on the bracket, and the main cable fixing member 300 is rotatably connected to the bracket. The limiting member is movably connected to the handle upper shell 910 so as to be able to move between a first position and a second position.

[0030] When the conveyor handle provided by the embodiment of the present invention is used for surgery, during the nailing process, the driving member drives the rotating cable and the follower 410 to rotate along the first direction through the transmission assembly, so that the rotating cable drives the fixer to rotate into the blood vessel wall. During the rotation of the main cable fixing member 300, the limiter is located at the first position. When the main cable fixing member 300 drives the fixer to rotate a certain number of circles, for example, one circle or one-half circle, the follower 410 abuts against the limiter, restricting the main cable fixing member 300 from continuing to rotate, and then the position of the limiter is adjusted to the second position, and the follower 410 is unlocked, so that the main cable fixing member 300 can continue to rotate in the first direction. After the follower 410 rotates past the limiter, the limiter is adjusted to the first position again. When the follower 410 rotates with the main cable fixing member 300 again until it abuts against the limiter, the above operation is repeated. The operator can obtain the number of turns of the fixer driven by the main cable fixing member 300 through the rotating cable according to the number of contacts between the follower 410 and the limiter, and accurately obtain the number of turns of the fixer, thereby making the implantation length of the fixer more accurately judged.

[0031] The follower 410 includes a sleeve 411 and a counting protrusion 412. The sleeve 411 is sleeved on the main cable fixing member 300, and the counting protrusion 412 is arranged on the outer peripheral wall of the sleeve 411. The limiting member includes a limiting plate, which is slidably connected to the shell of the conveyor handle.

[0032] like Figure 2As shown, the length direction of the main cable fixing part 300 is parallel to the length direction of the handle lower shell 920, the sleeve 411 is sleeved on the main cable fixing part 300 and is coaxially arranged with the main cable fixing part 300, and the counting protrusion 412 is arranged in the middle of the length direction of the sleeve 411. The limit plate is slidably connected with the handle upper shell 910 along the axis direction of the main cable fixing part 300, and the handle upper shell 910 is provided with a first oblong hole 911, and the length direction of the first oblong hole 911 is parallel to the axis of the main cable fixing part 300. The limit plate is arranged opposite to the first through hole. The operator can slide the limit plate along the axis direction of the main cable fixing part 300 through the first through hole, so that the limit plate is located at the first position or the second position. When the limit plate is located at the first position, the limit plate is opposite to the counting protrusion 412 along the axis direction of the main cable fixing part 300, and when the limit plate is located at the second position, the limit plate is staggered with the counting protrusion 412 along the axis direction of the main cable fixing part 300. Further, the number of the counting protrusions 412 may be one or more. When the number of the counting protrusions 412 is one, the main cable fixing member 300 rotates one circle, and the counting protrusion 412 abuts against the limit plate once. When the number of the counting protrusions 412 is multiple, two are used as an example for explanation. The two counting protrusions 412 are located on the same radial surface of the sleeve 411 and are evenly distributed along the circumference of the sleeve 411. When the main cable fixing member 300 rotates one-half circle, the counting protrusion 412 abuts against the limit plate once.

[0033] During the rotation of the main cable fixing part 300, the sleeve 411 and the counting protrusion 412 rotate with it, and the limiting plate is located at the first position. When the main cable fixing part 300 drives the fixer to rotate a certain number of times, for example, one circle or one-half circle, the counting protrusion 412 abuts against the limiting plate, limiting the main cable fixing part 300 from continuing to rotate, and then the limiting plate is slid to adjust the position of the limiting plate to the second position, and the counting protrusion 412 is unlocked, so that the main cable fixing part 300 can continue to rotate in the first direction. After the counting protrusion 412 rotates past the limiting plate, the limiting plate is adjusted to the first position again. When the counting protrusion 412 rotates with the main cable fixing part 300 again to abut against the limiting plate, the above operation is repeated. The operator can obtain the number of circles that the main cable fixing part 300 drives the fixer to rotate by rotating the cable according to the number of contacts between the counting protrusion 412 and the limiting plate, and accurately obtain the number of circles that the fixer rotates, so as to make the implantation length of the fixer more accurately judged. In addition, the limiting plate cooperates with the counting protrusion 412 to count the number of rotations of the main cable fixing member 300, which has a simple structure and is easy to operate.

[0034] The counting assembly further includes a slide plate 420 and a slide rail 430. The slide rail 430 is mounted on the housing. The slide plate 420 and the slide rail 430 are slidably matched. The limit plate is mounted on the slide plate 420. The slide rail 430 is mounted on the inner surface of the handle upper shell 910 by screws, and a slide groove is formed between the slide rail 430 and the inner surface of the handle upper shell 910. The extension direction of the slide groove is parallel to the axial direction of the main cable fixing member 300. The slide plate 420 and the slide groove are slidably matched. The limit plate is fixedly mounted on the slide plate 420. Figure 1 The lower surface of the slide plate 420 is shown Figure 1 The upper surface is provided with an adjustment button 421, which is located in the first oblong hole 911 and slidably cooperates with the first oblong hole 911. The operator can push the slide plate 420 and the limit plate to slide along the length direction of the first oblong hole 911 through the adjustment button 421. During the operation, the operator adjusts the limit plate to the first position or the second position through the adjustment button 421, which is convenient for adjustment. In the adjustment process, the slide plate 420 slides along the extension direction of the slide groove to improve the stability of the movement of the limit plate.

[0035] like Figure 1 As shown, the counting assembly further includes an elastic member 440, which is respectively connected to the limiting plate and the slide rail 430, and the elastic member 440 enables the limiting plate to have a movement tendency to be located at the first position.

[0036] Specifically, the elastic member 440 includes a rubber strip or a coil spring, etc. In this embodiment, the elastic member 440 includes a coil spring, which is located at the front end of the limit plate and abuts against the limit plate and the slide rail 430 respectively. When the limit plate is in the first position, the coil spring is in a compressed or naturally extended state. When the limit plate is pushed forward to be in the second position, the coil spring is compressed. When the counting protrusion 412 passes through the limit plate, the adjustment button 421 is released, and the limit plate automatically returns to the first position under the action of the restoring force of the coil spring. The setting of the coil spring enables the limit plate to automatically return to the first position without applying a force to return to the first position, which is convenient for operation.

[0037] As another implementation for calculating the number of rotations of the main cable fixing part 300, the follower 410 includes a sleeve 411 and a counting protrusion 412, the sleeve 411 is sleeved on the main cable fixing part 300, and the counting protrusion 412 is arranged on the outer peripheral wall of the sleeve 411. The limiting member includes a limiting rod, which is arranged along the radial direction of the sleeve 411 and is slidably connected to the handle upper shell 910. One end of the limiting rod is located outside the shell, and the other end is located inside the shell. The part located inside the shell is sleeved with a coil spring, which is respectively connected to the shell and the limiting rod. The coil spring makes the limiting rod have a movement tendency to abut against the outer peripheral surface of the sleeve 411. Along the axis of the main cable fixing part 300, the distance from the limiting rod to the front end of the sleeve 411 is equal to the distance from the counting protrusion 412 to the front end of the sleeve 411. During the rotation of the main cable fixing part 300, the sleeve 411 and the counting protrusion 412 rotate with it. When the main cable fixing part 300 drives the fixer to rotate a certain number of times, for example, one circle or one-half circle, the counting protrusion 412 abuts against the limit rod, restricting the main cable fixing part 300 from continuing to rotate, and then the limit rod is pulled outward so that the distance between the limit rod and the sleeve 411 can achieve the passage of the counting protrusion 412, so that the main cable fixing part 300 can continue to rotate in the first direction. After the counting protrusion 412 rotates past the limit rod, under the action of the restoring force of the coil spring, the limit rod abuts against the outer peripheral surface of the sleeve 411 again, and the counting protrusion 412 rotates with the main cable fixing part 300 again until it abuts against the limit rod, the above operation is repeated. The operator can obtain the number of circles that the main cable fixing part 300 drives the fixer to rotate by rotating the cable according to the number of contacts between the counting protrusion 412 and the limit rod, and accurately obtain the number of circles that the fixer rotates.

[0038] Furthermore, the follower 410 further includes a reset hand wheel 413 , which is sleeved on the main cable fixing member 300 and fixedly connected to the sleeve 411 .

[0039] The reset hand wheel 413 is sleeved on the main cable fixing part 300 and fixedly connected to the sleeve 411. The reset hand wheel 413 can drive the sleeve 411 to rotate around the axis of the main cable fixing part 300. The handle upper shell 910 is provided with a second oblong hole 912 for the reset hand wheel 413 to pass through. The length direction of the second oblong hole 912 is perpendicular to the axis of the main cable fixing part 300. When the limiting plate unlocks the counting protrusion 412, the operator can rotate the reset hand wheel 413 to drive the sleeve 411 to rotate along the first direction to reset the main cable fixing part 300.

[0040] Furthermore, the conveyor handle also includes an anti-reversal component, the follower 410 is connected to the main cable fixing member 300 through a one-way bearing 450, and the anti-reversal component is connected to the follower 410; when the main cable fixing member 300 rotates along a first direction, the inner ring and the outer ring of the one-way bearing 450 are locked to drive the follower 410 to rotate along the first direction, and the anti-reversal component is used to prevent the follower 410 from rotating along a second direction, and the first direction is opposite to the second direction.

[0041] The inner ring of the one-way bearing 450 is fixedly sleeved on the main cable fixing part 300, the reset handwheel 413 is fixedly sleeved on the outer ring of the one-way bearing 450, and the anti-reversal assembly is respectively connected to the reset handwheel 413 and the handle lower shell 920. When nailing, the driving member drives the main cable fixing part 300 to rotate in the first direction, thereby driving the inner ring of the one-way bearing 450 to rotate in the first direction relative to the outer ring of the one-way bearing 450, and the inner ring of the one-way bearing 450 is locked with the outer ring, thereby driving the reset handwheel 413 and the sleeve 411 to rotate in the first direction, and the limiting plate cooperates with the counting protrusion 412 on the sleeve 411 to facilitate counting the number of rotations of the main cable fixing part 300. When the driving member drives the main cable fixing member 300 to rotate in the second direction, the main cable fixing member 300 drives the inner ring of the one-way bearing 450 to rotate in the second direction relative to the outer ring of the one-way bearing 450, and the inner ring of the one-way bearing 450 and the outer ring of the one-way bearing 450 slip against each other, preventing the anti-rotation component from blocking the main cable fixing member 300 from rotating in the second direction, thereby affecting the ceiling suction operation during the operation. The anti-reversal component prevents the sleeve 411 from driving the counting protrusion 412 to rotate in the second direction during the nailing process by resetting the hand wheel 413, thereby affecting the accuracy of the counting of the number of rotations of the main cable fixing member 300.

[0042] Furthermore, the anti-reversal assembly includes a ratchet 510 and a pawl. The ratchet 510 is fixedly sleeved on the follower 410. The pawl cooperates with the ratchet 510 to prevent the follower 410 from rotating in the second direction.

[0043] like Figure 2 As shown, the ratchet 510 is sleeved on the main cable fixing member 300 and fixedly connected to the end face of the reset handwheel 413. The pawl is fixedly mounted on the bracket or the lower shell 920 of the handle. In this embodiment, the pawl is fixedly mounted on the inner surface of the lower shell 920 of the handle and cooperates with the ratchet 510. When the reset handwheel 413 drives the ratchet 510 to rotate in the first direction, the pawl can slide relative to the outer periphery of the ratchet 510, so that the reset handwheel 413 and the sleeve 411 can rotate in the first direction. When the reset handwheel 413 drives the ratchet 510 to rotate in the second direction, the pawl is stuck in the tooth groove on the ratchet 510, preventing the ratchet 510 from rotating in the second direction, thereby preventing the reset handwheel 413 and the sleeve 411 from rotating in the second direction, thereby improving the accuracy of counting the number of rotations of the main cable fixing member 300.

[0044] Further, the transmission assembly includes a gear transmission group, which is respectively connected to the driving member and the main cable fixing member 300. The driving member includes a driving hand wheel 100, which is transmission-connected to the gear transmission group.

[0045] Specifically, the driving hand wheel 100 is rotatably connected to the bracket, and the axis of the driving hand wheel 100 is perpendicular to the axis of the main cable fixing member 300. The handle upper shell 910 is provided with a third oblong hole 913 for the driving hand wheel 100 to pass through, and the length direction of the third oblong hole 913 is parallel to the axis of the main cable fixing member 300. The gear transmission group includes a driving spur gear 210, a first driven spur gear 220, a second driven spur gear 230, a driving bevel gear 240 and a driven bevel gear 250, all of which are rotatably connected to the bracket. The driving spur gear 210 is coaxially fixedly connected to the driving hand wheel 100, the first driven spur gear 220 is meshed with the driving spur gear 210 and the second driven spur gear 230 respectively, the second driven spur gear 230 is coaxially fixedly connected to the driving bevel gear 240, the driving bevel gear 240 is meshed with the driven bevel gear 250, and the driven bevel gear 250 is fixedly connected to the main cable fixing member 300. When the driving hand wheel 100 rotates forward, the driving hand wheel 100 drives the main cable fixing member 300 to rotate in a first direction through the gear transmission group. When the driving hand wheel 100 rotates backward, the driving hand wheel 100 drives the main cable fixing member 300 to rotate in a second direction through the gear transmission group, thereby realizing nailing and nail suction operations accordingly.

[0046] The conveyor provided by the embodiment of the present invention comprises a rotating cable, a shift fork 700 and the above-mentioned conveyor handle, the rotating cable is connected to the main cable fixing piece 300 in the conveyor handle, and the shift fork 700 is connected to the end of the rotating cable away from the main cable fixing piece 300.

[0047] like Figure 3 As shown, the rotating cable includes a main cable 610 and a flexible cable 620. One end of the main cable 610 is fixedly connected to the main cable fixing member 300, and the other end is connected to the flexible cable 620. The fork 700 is connected to the end of the flexible cable 620 away from the main cable 610 through the fork connecting column 710, as shown in FIG. Figure 4 As shown, the fork 700 adopts a single fork structure, which is easier to insert when installed in the fixture, and the fork 700 is provided with a fork plane 720 for cooperating with the crossbeam on the fixture. The main cable fixture 300 is provided with a mounting through hole along its axial direction, and a top screw mounting hole connected to the mounting through hole is provided on the outer peripheral wall of the main cable fixture 300. The main cable 610 is inserted into the mounting through hole and is opposite to the top screw mounting hole. The main cable 610 is tightened by the top screw, so that the main cable fixture 300 and the main cable 610 are connected as a whole, thereby improving the synchronization of the transmission and the accuracy and reliability of the rotation position, which is conducive to improving the accuracy and reliability when releasing and recovering the fixture.

[0048] A cable connector 630 is welded to one end of the flexible cable 620 connected to the main cable 610. The cable connector 630 is provided with a main cable insertion hole for inserting the main cable 610. The side wall of the main cable insertion hole is provided with a first pin hole or a pin groove connected to the main cable insertion hole. A second pin hole is provided at one end of the main cable 610 that cooperates with the cable connector 630. After the main cable 610 is inserted into the main cable insertion hole, the axis of the first pin hole is aligned with the axis of the second pin hole or the pin groove. After the pin is inserted, the end face of the pin is laser welded, so that the main cable 610, the pin, the cable connector 630 and the flexible cable 620 and the fork 700 at the front section of the flexible cable 620 are connected into a whole, forming a semi-finished rotating cable. The segmented design of the rotating cable ensures both the cornering performance at the far end and the synchronization consistency during the rotation transmission. In addition, the cable connector 630 plays the role of transition and bridge, and cooperates with the pin shaft to connect the main cable 610 and the flexible cable 620 made of different materials, thereby reducing the limitations on the material requirements for the rotating cable.

[0049] like Figure 2 and Figure 5 As shown, the outer sleeve of the rotating cable is provided with a conveying outer tube 800, one end of the conveying outer tube 800 is connected to the conveyor handle through an exhaust member 810, the exhaust member 810 is located at the front end of the main cable fixing member 300, the exhaust member 810 is installed with an exhaust member pressing plate at the end opposite to the main cable fixing member 300, a sealing gasket is provided between the exhaust member pressing plate and the exhaust member 810, and the main cable 610 passes through the exhaust member 810, the sealing gasket and the exhaust member pressing plate and is connected to the main cable fixing member 300. An exhaust pipe 811 is connected below the exhaust member 810, and the conveying outer tube 800 and the exhaust pipe 811 are respectively connected to the inside of the exhaust member 810. A receiving member 820 is provided at the other end of the conveying outer tube 800, and a receiving groove for receiving a fixer is provided in the receiving member 820, the shift fork 700 is located in the receiving groove, and a fixer receiving groove matching the fixer is provided on the inner wall of the receiving groove.

[0050] A first limiting structure is provided on the circumferential surface of the shift fork 700, and a second limiting structure cooperating with the first limiting structure is provided inside the receiving part 820. The first limiting structure cooperates with the second limiting structure to prevent the shift fork 700 from moving along its own axial direction. Specifically, the first limiting structure includes a limiting groove or a limiting protrusion, and the second limiting structure is correspondingly a limiting protrusion or a limiting groove. In this embodiment, a limiting groove is provided on the circumferential surface of the shift fork 700, and a limiting protrusion is provided on the inner wall of the receiving part 820. When the shift fork 700 is assembled in the receiving part 820, the limiting protrusion is clamped in the limiting groove, and the limiting protrusion cooperates with the limiting groove to prevent the shift fork 700 from sliding relative to the receiving part 820 along the axis of the receiving part 820, resulting in the inability to drive the fixer out of the receiving part 820, thereby causing the operation to fail.

[0051] The conveyor provided in the embodiment of the present invention is used in conjunction with an adjustable bending sheath tube. During the operation, the fixator is sleeved on the fork 700, and the driving hand wheel 100 is rotated backward, so that the fork 700 drives the fixator to rotate into the receiving part 820. After the fixator is conveyed to the specified position in the blood vessel, the end face of the receiving part 820 abuts against the coated stent, and the driving hand wheel 100 is rotated forward to rotate the fixator out of the receiving part 820 and implant it into the blood vessel wall. During the implantation process, when the main cable fixing part 300 rotates, the sleeve 411 and the counting protrusion 412 rotate with it, and the limit plate is in the first position. When the cable fixing part 300 drives the fixer to rotate a certain number of times, for example, one circle or one-half circle, the counting protrusion 412 contacts the limit plate, restricting the main cable fixing part 300 from continuing to rotate, and then the limit plate is slid to adjust the position of the limit plate to the second position, unlocking the counting protrusion 412, and allowing the main cable fixing part 300 to continue to rotate in the first direction by resetting the hand wheel 413. After the counting protrusion 412 rotates past the limit plate, the limit plate is adjusted to the first position again, and the counting protrusion 412 is rotated with the main cable fixing part 300 again until it contacts the limit plate, and the above operation is repeated. During the implantation process, the pawl cooperates with the ratchet 510 to prevent the sleeve 411 from reversing, thereby improving the accuracy of the number of circle statistics. The operator can obtain the number of circles that the main cable fixing part 300 drives the fixer to rotate by rotating the cable according to the number of contacts between the counting protrusion 412 and the limit plate, and accurately obtain the number of circles that the fixer rotates, thereby making the implantation length of the fixer more accurately judged.

[0052] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A conveyor handle, characterized in that: include: A driving member, a transmission assembly, a main cable fixing member (300) and a counting assembly, wherein the driving member is transmission-connected to the main cable fixing member (300) via the transmission assembly to drive the main cable fixing member (300) to rotate around its own axis, and the main cable fixing member (300) is used to be connected to a rotating cable; The counting assembly comprises a follower (410) and a limiter; the follower (410) is arranged on the main cable fixing member (300) and is capable of rotating synchronously with the main cable fixing member (300); the follower (410) comprises a sleeve (411) and a counting protrusion (412); the sleeve (411) is sleeved on the main cable fixing member (300); and the counting protrusion (412) is arranged on the outer peripheral wall of the sleeve (411); the limiter comprises a limiter plate, and the limiter plate is slidably connected to the shell of the conveyor handle; The limiting member has a first position and a second position. When the limiting member is in the first position, the limiting member can limit the rotation of the main cable fixing member (300) through the follower (410). The limiting plate is slid to adjust the position of the limiting plate to the second position. When the limiting member is in the second position, the limiting member unlocks the follower (410). After the counting protrusion (412) rotates past the limiting plate, the limiting plate is adjusted to the first position again. The counting assembly further comprises a slide plate (420) and a slide rail (430), wherein the slide rail (430) is mounted on the housing, the slide plate (420) is slidably matched with the slide rail (430), and the limit plate is mounted on the slide plate (420); The counting assembly further comprises an elastic member (440), wherein the elastic member (440) is respectively connected to the limit plate and the slide rail (430), and the elastic member (440) enables the limit plate to have a movement tendency to be located at the first position.

2. The conveyor handle according to claim 1, characterized in that: The follower (410) further comprises a reset hand wheel (413), wherein the reset hand wheel (413) is sleeved on the main cable fixing member (300) and fixedly connected to the sleeve (411).

3. The conveyor handle according to claim 1 or 2, characterized in that: The conveyor handle further comprises an anti-reversal assembly, the follower (410) is connected to the main cable fixing member (300) via a one-way bearing (450), and the anti-reversal assembly is connected to the follower (410); when the main cable fixing member (300) rotates in a first direction, the inner ring and the outer ring of the one-way bearing (450) are locked to drive the follower (410) to rotate in the first direction, and the anti-reversal assembly is used to prevent the follower (410) from rotating in a second direction, the first direction being opposite to the second direction.

4. The conveyor handle according to claim 3, characterized in that: The anti-reversal assembly comprises a ratchet (510) and a pawl, the ratchet (510) being fixedly sleeved on the follower (410), and the pawl cooperating with the ratchet (510) to prevent the follower (410) from rotating along the second direction.

5. The conveyor handle according to claim 1, characterized in that: The transmission assembly comprises a gear transmission group, and the gear transmission group is connected to the driving member and the main cable fixing member (300) respectively.

6. The conveyor handle according to claim 5, characterized in that The driving member comprises a driving hand wheel (100), and the driving hand wheel (100) is in transmission connection with the gear transmission group.

7. A conveyor, characterized in that: It comprises a rotating cable, a shift fork (700) and a conveyor handle according to any one of claims 1 to 6, wherein the rotating cable is connected to a main cable fixing piece (300) in the conveyor handle, and the shift fork (700) is connected to an end of the rotating cable away from the main cable fixing piece (300).

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