CN117814955A - Wire winding device and transcatheter valve ring forming system - Google Patents
Wire winding device and transcatheter valve ring forming system Download PDFInfo
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- CN117814955A CN117814955A CN202211182794.9A CN202211182794A CN117814955A CN 117814955 A CN117814955 A CN 117814955A CN 202211182794 A CN202211182794 A CN 202211182794A CN 117814955 A CN117814955 A CN 117814955A
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Abstract
The invention provides a wire collecting device and a transcatheter valve ring forming system. The wire collecting device comprises a wire collector, an elongated connecting sleeve and an operating handle. The wire winder comprises a winding shaft which rotates unidirectionally. The distal end of the elongated connector assembly is removably connected to the spool. The operating handle comprises a driving component and an anti-error-rolling component. The drive assembly is coupled to the proximal end of the elongate connection member. The anti-mistaking winding assembly comprises a travel mechanism and a sliding mechanism, wherein the travel mechanism comprises a first transmission part and a second transmission part which are movably connected, the first transmission part is fixedly connected with the driving assembly, the second transmission part is axially movably connected with the sliding mechanism and the sliding mechanism is used for limiting the rotation of the second transmission part, and when the driving assembly rotates along the first rotation direction to drive the winding shaft to wind the flexible elongated member, the second transmission part moves axially relative to the first transmission part. In the indicating state, the second transmission part is limited to move continuously along the axial direction so as to limit the driving assembly to rotate continuously along the first rotating direction.
Description
Technical Field
The invention belongs to the technical field of medical instruments, and particularly relates to a wire winding device and a transcatheter valve ring forming system.
Background
Mitral Regurgitation (MR) is a heart valve disorder that results in regurgitation of blood from the left ventricle to the left atrium due to mitral insufficiency. Currently, mitral valve regurgitation is often reduced in size by annuloplasty. For example, a plurality of anchors connected in series through an elongated wire are implanted on the mitral valve annulus, then redundant elongated wires are tightened through a wire winding device to shorten the interval between adjacent anchors, and the wire winding device stays in a human body along with the anchors and the elongated wires, so that the contraction ring of the mitral valve annulus is realized, and mitral regurgitation is treated. Wherein the elongate wire is selected for a suitable implantation length and is detachably connected to a delivery member, and the anchor is delivered to the elongate wire by the delivery member extending outside the body.
In the prior art, the annuloplasty ring is contracted by adopting a mode that a wire winding device winds an slender wire. In the ring shrinking process, after the wire collector is conveyed to a preset position on the long wire through the conveying piece, the long wire is required to be wound for a plurality of circles and then withdrawn from the conveying piece, so that the phenomenon that the wire collector and the long wire are separated due to heart beating is avoided. However, in this process, there is a risk that the connection of the wire takeup winding transport member and the elongated wire, or even the winding transport member, causes the transport member and the elongated wire to be difficult to be released.
Disclosure of Invention
In order to solve the technical problems, the invention provides a wire collecting device and a transcatheter valve annulus forming system, which can ensure that a wire collecting device and a flexible elongated member of the wire collecting device cannot be separated due to heart beating in the process of withdrawing a conveying member, and ensure that the wire collecting device cannot wind a joint of the conveying member and the flexible elongated member or even the conveying member and ensure that the conveying member and the flexible elongated wire can be smoothly released.
The invention provides an error-winding-prevention wire winding device which comprises a wire winding device, an elongated connecting sleeve and an operating handle. The wire winder comprises an outer shell and a winding shaft which is arranged in the outer shell in a unidirectional rotation mode, and the winding shaft is used for winding the flexible elongated piece. The proximal end of the flexible elongate member is coupled to the distal end of the delivery member. The distal end of the elongated connector assembly is removably connected to the spool. The operating handle comprises a driving component and an anti-error-rolling component. The drive assembly is coupled to the proximal end of the elongate connection sleeve for synchronizing movement of the elongate connection sleeve with the drive assembly. The anti-mistaking-roll assembly comprises a travel mechanism and a sliding mechanism, wherein the travel mechanism comprises a first transmission part and a second transmission part which are movably connected, the first transmission part is fixedly connected with the driving assembly, and the second transmission part is axially movably connected with the sliding mechanism and the sliding mechanism is used for limiting the second transmission part to rotate. When the driving assembly rotates along the first rotating direction to drive the winding shaft to wind the flexible elongated member, the first transmission member and the driving assembly synchronously rotate, so that the second transmission member moves towards the proximal end or the distal end along the axial direction relative to the first transmission member. The wire collecting device is provided with an indication state, and in the indication state, the second transmission piece is limited to continuously move towards the proximal end along the axial direction or continuously move towards the distal end along the axial direction so as to limit the driving assembly to continuously rotate along the first rotating direction.
The invention provides a transcatheter annuloplasty system comprising a wire takeup device as described above and an annuloplasty structure comprising a flexible elongate member and a plurality of anchors connected to the flexible elongate member for implantation in heart tissue, the wire takeup device being adapted to control the winding of the wire spool around the flexible elongate member to reduce the spacing between the plurality of anchors implanted in the heart tissue.
According to the wire winding device and the catheter annuloplasty system, as the first transmission piece is fixedly connected with the driving assembly, when the driving assembly rotates along the first rotation direction and drives the winding shaft to rotate through the slender connecting sleeve piece to wind the flexible slender piece, the first transmission piece and the driving assembly synchronously rotate, and the second transmission piece movably connected with the first transmission piece can move towards the near end (or move towards the far end) along the axial direction relative to the first transmission piece. When the wire takeup device is in the indicating state, the second transmission member is restricted from continuing to move axially proximally (or continues to move axially distally), the drive assembly cannot continue to rotate in the first rotational direction, and the spool driven by the drive assembly cannot continue to wind the flexible elongate member. Therefore, the wire takeup is conveyed to a proper position on the flexible elongated member by controlling the distance that the second transmission member can move relative to the first transmission member, so that the joint of the flexible elongated member and the conveying member is still positioned outside the wire takeup when the driving assembly cannot continue to rotate along the first rotation direction. When the operator finds that the driving assembly cannot continue to rotate along the first rotation direction, the connection between the conveying piece and the flexible elongated piece is timely released, and the conveying piece is withdrawn from the human body. Therefore, the winding shaft is ensured to wind the flexible elongated member, the connection part of the winding shaft winding flexible elongated member and the conveying member is prevented from winding the conveying member even, the condition that the conveying member can be withdrawn after being cut in the body is avoided, and the safety of operation is improved. Moreover, when the delivery piece is withdrawn, the winding shaft can only rotate unidirectionally along the first rotation direction, and part of the flexible elongated piece is wound on the winding shaft, so that the connection between the wire collector and the flexible elongated piece is stable, the wire collector and the flexible elongated piece can be prevented from being separated due to heart beating, and the operation stability and the safety of an operation are improved.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are needed in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
Fig. 1 is a schematic perspective view of a winding device for preventing miscolling according to an embodiment of the present invention;
fig. 2 to 6 are schematic views of a scenario in which the wire takeup device according to the embodiment of the present invention is applied to an annuloplasty structure;
fig. 7 is a schematic perspective view of a wire takeup device of the wire takeup device shown in fig. 1;
FIG. 8 is a schematic perspective view of the wire takeup shown in FIG. 7 taken along line A-A;
fig. 9 is a schematic perspective view of the wire takeup device shown in fig. 7 with the main housing omitted;
FIG. 10 is a partial cross-sectional view of the delivery assembly and the wire takeup of the wire takeup device of FIG. 1;
FIG. 11 is a cross-sectional view of the delivery assembly of the wire takeup device shown in FIG. 10;
FIG. 12 is a partial cross-sectional view of a delivery assembly and a wire takeup of yet another wire takeup device provided in an embodiment of the present invention;
fig. 13 is an exploded perspective view of the wire takeup device (the wire takeup is omitted) shown in fig. 1;
Fig. 14 is a schematic perspective view of the driving assembly of the wire winding device shown in fig. 13 in a first state, an indicating state and a second state;
FIG. 15 is an exploded perspective view of the drive assembly of FIG. 14;
FIG. 16 is a schematic view of the drive assembly of FIG. 14 taken along line B-B;
FIG. 17 is a cross-sectional view of a first rotational member of the drive assembly of FIG. 16;
fig. 18 is a schematic view showing a part of the wire takeup device shown in fig. 13 in a state of indication;
FIG. 19 is an enlarged view of the XIX portion of FIG. 18;
FIG. 20 is an exploded perspective view of the anti-mistaking-reel assembly, the connecting tube, the first rotating member and the connecting tube fixing member of the wire rewinding device shown in FIG. 13;
FIG. 21 is an exploded perspective view of the travel mechanism of the anti-mistaking package of FIG. 20;
FIG. 22 is an exploded perspective view of the slide mechanism and the stop mechanism of the anti-mistaking package of FIG. 20;
fig. 23 is a schematic view showing a partial perspective structure of the wire takeup device shown in fig. 13 in a first state;
FIG. 24 is an enlarged view of portion XXIV in FIG. 23;
fig. 25 is a schematic view of a part of the wire winding device shown in fig. 13 in a second state;
FIG. 26 is an enlarged view of portion XXVI in FIG. 25;
fig. 27 is a schematic perspective view of the second housing and the sliding mechanism of the wire winding device shown in fig. 13 after being assembled;
Fig. 28 is a schematic perspective view of the driving assembly of the wire winding device shown in fig. 13 in a third state;
fig. 29 is a schematic view of the drive assembly of fig. 28 taken along line C-C.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are only some, but not all embodiments of the invention. All other embodiments, which can be made by those skilled in the art based on the embodiments of the present invention without any inventive effort, are within the scope of the present invention.
Furthermore, the following description of the embodiments refers to the accompanying drawings, which illustrate specific embodiments in which the invention may be practiced. Directional terms, such as "upper", "lower", "front", "rear", "left", "right", "inner", "outer", "side", etc., in the present invention are merely referring to the directions of the attached drawings, and thus, directional terms are used for better, more clear explanation and understanding of the present invention, rather than indicating or implying that the apparatus or element being referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.
Orientation definition: for clarity of description, the end of the procedure that is closer to the operator will be referred to as the "proximal end" and the end that is farther from the operator will be referred to as the "distal end" hereinafter. The central axis of "part a" refers to the geometric centerline of "part a". The connection between the "component a" and the "component B" may be a direct contact connection between the "component a" and the "component B", or an indirect connection between the "component a" and the "component B" via the "component C". The above definitions are for convenience of description only and are not to be construed as limiting the invention.
It is noted that the term "end" as used in the terms of "proximal", "distal", "one end", "other end", "first end", "second end", "initial end", "terminal", "both ends", "free end", "upper end", "lower end", etc., is not limited to a tip, endpoint or end face, but includes a location that extends an axial distance and/or a radial distance from a tip, endpoint or end face on the element to which the tip, endpoint or end face belongs.
In the present invention, the term "member a" and "member B" are prevented from rotating relative to each other, and means that "member a" and "member B" are prevented from rotating relative to each other. Synchronous movement of "part a" and "part B" refers to synchronous rotation of "part a" and "part B" or synchronous movement of "part a" and "part B". Both parallel and perpendicular allow for a range of tolerances.
Referring to fig. 1 to 6, an embodiment of the invention provides a wire rewinding device 100 capable of preventing miscorking. The wire rewinding device 100 comprises a wire rewinding device 10, a conveying assembly 20 and an operating handle 30. The wire takeup 10 is detachably connected to the distal end of the delivery assembly 20, and the operating handle 30 is connected to the proximal end of the delivery assembly 20.
Embodiments of the present invention also provide a transcatheter annuloplasty system comprising a wire-receiving device 100 and an annuloplasty structure 200. As shown in fig. 2 and 3, the annuloplasty structure 200 is for implantation in heart tissue, and the wire retractor 10 is used in conjunction with the annuloplasty structure 200 as an implant. In particular, the wire retractor 10 may be implanted on the annulus 1 (mitral valve annulus or tricuspid valve annulus) with the annuloplasty structure 200 to constrict the annulus 1 to effect treatment of mitral regurgitation or tricuspid regurgitation; alternatively, the wire retractor 10 may be implanted with the annuloplasty structure 200 in the ventricle wall under the annulus 1, such as 0.5-2cm below the annulus 1, to reduce the volume of the ventricle by constricting the ventricle, thereby reducing the volume of the annulus 1. It will be appreciated that at least the distal portion of the delivery assembly 20 is flexible and can accommodate the curvature of a body vessel to deliver the wire retractor 10 to a target site.
In some embodiments, the annuloplasty structure 200 comprises a flexible elongate member 201 and a plurality of anchors 202 connecting the flexible elongate member 201. A plurality of anchors 202 are used for implantation in heart tissue. Further, the annuloplasty structure 200 further comprises a plurality of spacers 203, a plurality of anchors 202 and a plurality of spacers 203 are worn on the flexible elongate member 201. The flexible elongated member 201 may be a wire, a filament, a rope, a strip, a belt, etc. having a certain axial length and having a radial cross-sectional shape of a circle, an oblate, a rectangle, a square, or other shapes, etc., which is not limited in the present invention. Preferably, the flexible elongate member 201 is an elongate wire, such as a metal elongate wire. The flexible elongate member 201 is made of a biocompatible material.
In some embodiments, the proximal end of the flexible elongate member 201 is connected to the distal end of a delivery member 300. At least the distal portion of the delivery member 300 is flexible and the delivery member 300 can extend outside of the body. A first anchor 202 is coupled to the distal end of flexible elongate member 201 and the remaining anchors 202, plurality of spacers 203, and wire retractor 10 are delivered to flexible elongate member 201 and are movable on flexible elongate member 201 by delivery member 300. The delivery member 300 can be separated from the flexible elongate member 201 and withdrawn from the body. In this way, the flexible elongate member 201 can be selected to have a suitable implantation length, and the flexible elongate member 201 does not need to be cut in vivo, so that particle falling is avoided, and the operation is safer.
The conveying member 300 may be a wire, a filament, a rope, a strip, a belt, a flexible rod member, or the like having a certain axial length, and the radial cross-sectional shape thereof may be a circular shape, an oblate shape, a rectangular shape, a square shape, or other shapes, which is not limited in the present invention. Preferably, the conveying member 300 is a conveying line. The delivery member 300 may also be made of a biocompatible material, such as a polymer material or stainless steel, which is not limited in the present invention.
It will be appreciated that the flexible elongate member 201 is detachably connected to the delivery member 300. In one example, the proximal and distal ends of the flexible elongate member 201 each form a loop, wherein the distal loop of the flexible elongate member 201 is connected to the first anchor 202, the delivery member 300 has two head ends, and the delivery member 300 is threaded through the proximal loop of the flexible elongate member 201 such that the distal end of the delivery member 300 forms a U-shaped connection with the proximal end of the flexible elongate member 201. In use, the two head ends of the delivery member 300 extend outside the body. The two head ends of the delivery member 300 can be free ends, i.e., the two head ends are not closed; when the flexible elongate member 201 needs to be disconnected from the delivery member 300, the delivery member 300 can be separated from the flexible elongate member 201 by pulling on one end of the delivery member 300 to withdraw the delivery member 300 from the proximal loop of the flexible elongate member 201. The two ends of the delivery member 300 may also be connected to a lead member, i.e., the two ends are closed, and when it is desired to disconnect the flexible elongate member 201 from the delivery member 300, at least one of the ends of the delivery member 300 may be separated from the lead member by cutting, i.e., the delivery member 300 may be pulled to withdraw the delivery member 300 from the proximal loop of the flexible elongate member 201. In addition, the proximal end of the flexible elongate member 201 and the distal end of the delivery member 300 may be removably coupled by, but not limited to, a threaded connection, a snap-fit connection, etc., such that the flexible elongate member 201 may be separated from the delivery member 300.
As shown in fig. 2, 4, 5 and 6, taking the implantation of the annuloplasty structure 200 on the annulus 1 as an example, after the sequential implantation of the plurality of anchors 202 on the annulus 1, the plurality of anchors 202 and the plurality of spacers 203 are sequentially and alternately threaded on the flexible elongate member 201. At this point, the wire takeup 10 connected to the delivery assembly 20 is delivered by the delivery member 300 to the vicinity of the last anchor 202 or the last spacer 203 on the flexible elongate member 201. Next, the flexible elongate member 201 is tightened by controlling the wire retractor 10 to wind around the flexible elongate member 201 such that the spacing between each adjacent two anchors 202 is reduced, thereby narrowing the annulus 1. After the friction between the flexible elongated member 201 and the wire collector 10 can ensure that the connection between the flexible elongated member 201 and the wire collector 10 is stable, the delivery member 300 is withdrawn from the human body, and the wire collector 10 is controlled to continue winding the flexible elongated member 201, so that the interval between every two adjacent anchors 202 is continuously reduced to continuously shrink the annulus 1 until mitral regurgitation or tricuspid regurgitation is weakened or even vanished. At this point, the retractor 10 locks the flexible elongate member 201, disconnected from the delivery assembly 20, and then left on the annulus 1 to maintain the telescoping effect of the annuloplasty structure 200 on the annulus 1.
It should be noted that, the "first anchor 202" refers to an anchor 202 that enters the human body first in time sequence among the plurality of anchors 202; the "last anchor 202" refers to the last anchor 202 of the plurality of anchors 202 that enters the human body in time sequence; the "last spacer 203" refers to a spacer 203 which last enters the human body in time series among the plurality of spacers 203.
In other embodiments, the wire reel 10 may be used with other implants requiring winding of flexible elongated members. For example, the flexible elongate member of the implant acts as an artificial chordae tendineae secured to the ventricular wall or papillary muscles, and the retractor 10 can adjust the length of the artificial chordae tendineae by winding and locking the flexible elongate member. It will be appreciated that the retractor 10 also needs to remain in the body to keep the length of the artificial chordae unchanged.
The following describes in detail the wire winding apparatus 100 for preventing miscollution according to the embodiment of the present invention, taking an example that the wire winding apparatus 10 is applied to the annuloplasty structure 200 and the annuloplasty structure 200 is implanted on the annulus 1.
Referring to fig. 7 to 9, the wire takeup 10 includes a spool 11, and the spool 11 is used to wind a flexible elongated member 201. The wire takeup 10 further includes an outer housing 12, and the spool 11 is provided in the outer housing 12 in a unidirectional rotation manner. The flexible elongate member 201 is movable through the outer housing 12 and the spool 11, the spool 11 rotating relative to the outer housing 12 to wind the flexible elongate member 201. When the spool 11 stops rotating, the flexible elongate member 201 is locked into the radial space 13 between the spool 11 and the outer housing 12.
Thus, after sequentially implanting the plurality of anchors 202 of the annuloplasty structure 200 (shown in fig. 2) in the annulus 1, the delivery member 300 may be passed through the outer housing 12 and the spool 11, and the wire takeup 10 coupled to the delivery assembly 20 may be delivered along the delivery member 300 and the flexible elongate member 201 may be moved through the outer housing 12 and the spool 11. At this time, the flexible elongate member 201 is wound by controlling the rotation of the spool 11 relative to the outer housing 12 such that the flexible elongate member 201 is continuously tightened, and the spacing between each adjacent two anchors 202 is gradually reduced to constrict the annulus 1. When the ring shrinkage effect is ideal, the rotation of the winding shaft 11 is stopped, and the wire collector 10 is released from the conveying assembly 20 and remains in the human body. It should be noted that during winding of the flexible elongated member 201, rotation of the spool 11 may be stopped to facilitate withdrawal of the delivery member 300.
Because the spool 11 can only rotate unidirectionally to wind the flexible elongated member 201, the spool 11 can not rotate reversely after stopping rotating, and friction exists between the spool 11 and the spool 11 when the flexible elongated member 201 winds the spool 11, the tension generated by the activity of the valve blades on the flexible elongated member 201 can be resisted, and the flexible elongated member 201 is ensured not to be pulled. Thus, when the ring is contracted to a desired effect, stopping rotation of the spool 11 locks the flexible elongate member 201 in the radial space 13 between the spool 11 and the outer housing 12, the flexible elongate member 201 maintains a certain length over the annulus 1, and the annuloplasty structure 200 maintains the ring contracting effect on the annulus 1, ensuring the therapeutic effect of the procedure. It can be appreciated that such a design is not only beneficial for winding and locking the flexible elongate member 201 around the spool 11 to shrink the annulus 1, but also has good locking effect on the flexible elongate member 201; moreover, if the patient's annulus 1 is enlarged again to cause regurgitation and recurrence after a period of time, the wire rewinding device 10 can be directly controlled to further wind the flexible elongated member 201 to shrink the annulus 1 so as to weaken or disappear the regurgitation, and avoid the serious injury to the patient caused by the secondary operation. It should be noted that, the wire takeup device 10 may be made of SUS316L stainless steel, or other biocompatible materials, which is not limited in the present invention.
Further, the wire takeup 10 further includes a rotation stopping assembly 14, and the rotation stopping assembly 14 includes a limiting post 141, a rotation stopping wheel 142 and an elastic element 143. The limiting post 141 is convexly arranged on the inner wall of the far end of the outer shell 12, the limiting wheel 142 is movably sleeved on the limiting post 141 and is opposite to the limiting post 141 in rotation, the elastic element 143 is abutted between the outer shell 12 and the limiting wheel 142, and the winding shaft 11 is rotatably sleeved on the limiting post 141. The proximal end of the stopper wheel 142 is provided with a plurality of first bevel gears 1421 in the circumferential direction, and the distal end of the spool 11 is provided with a plurality of second bevel gears 113 in the circumferential direction, the first bevel gears 1421 being unidirectionally engaged with the second bevel gears 113.
The cooperation of the anti-rotation assembly 14 with the spool 11 ensures that the spool 11 can only rotate unidirectionally (i.e., in a forward direction) relative to the outer housing 12 to wind the flexible elongate member 201. When the spool 11 stops rotating, the anti-rotation assembly 14 limits the spool 11 from rotating in opposite directions relative to the outer housing 12, thereby ensuring that the flexible elongate member 201 is locked into the radial space 13 between the spool 11 and the outer housing 12.
In the illustrated example, the outer housing 12 includes a bottom case 121 and a main housing 122, the proximal and distal ends of the main housing 122 are both open, and the bottom case 121 is fixedly connected to the distal end of the main housing 122 to form an installation space. The installation space is used for accommodating the spool 11, the limit post 141, the limit wheel 142 and the elastic element 143. The spool 11 includes a sleeve portion 111 disposed at a proximal end, and the sleeve portion 111 is exposed from a proximal opening of the housing 122 to the outside of the installation space. The portion of the spool 11 located in the installation space is provided with a wire passing hole 114 in its radial direction. The main housing 122 is provided with threading holes 1221 on both sides of the spool 11, and the two threading holes 1221 are both communicated with the wire passing hole 114 of the spool 11. When the wire takeup 10 is threaded onto the flexible elongated member 201, the flexible elongated member 201 is threaded into the installation space of the outer housing 12 from one threading hole 1221, then threaded through the wire passing hole 114 of the spool 11, and then threaded out of the outer housing 12 from the other threading hole 1221. Preferably, the central axes of the two threading holes 1221 are in the same plane with the central axis of the via hole 114, and the spool 11 is turned to make the central axis of the via hole 114 and the central axes of the two threading holes 1221 collinear, so that the flexible elongated member 201 can smoothly pass through the two threading holes 1221 and the via hole 114.
The distal end of the limit post 141 is fixedly connected with the bottom case 121. The limiting post 141 may be a steel pipe or an integrally formed structure with the bottom case 121, which is not limited in the present invention. The proximal end of the stopping wheel 142 is further provided with a limiting boss 1422, the distal end of the main housing 122 is provided with a limiting slot 1222, the stopping wheel 142 is sleeved on the limiting column 141, the limiting boss 1422 is clamped in the limiting slot 1222, and thus the stopping wheel 142 can be limited to rotate relative to the limiting column 141, and the stopping wheel 142 can axially move along the limiting column 141. The distal end surface of the spool 11 is further provided with a positioning groove 115 matched with the proximal end of the limiting post 141, and the proximal end surface of the limiting post 141 contacts with the distal end surface of the spool 11 to limit the axial displacement of the spool 11 in the installation space together with the proximal end of the main housing 122, so that the spool 11 can only rotate. The elastic element 143 is located between the stopping wheel 142 and the bottom shell 121, and has one end abutting against the bottom shell 121 and one end abutting against the stopping wheel 142, and the elastic element 143 is used for providing elastic force to the stopping wheel 142, so that the first oblique tooth 1421 of the stopping wheel 142 is attached to the second oblique tooth 113 of the winding shaft 11. The elastic element 143 may be, but is not limited to, a spring, a tubular elastic sheet, an elastic bellows, etc.
When the spool 11 rotates forward relative to the outer housing 12, the plurality of second helical teeth 113 slip on the plurality of first helical teeth 1421 to move the stopping wheel 142 distally, and when the spool 11 rotates by an angle of one helical tooth relative to the stopping wheel 142, the stopping wheel 142 moves proximally after receiving the elastic force given by the elastic element 143, so that the first helical teeth 1421 and the second helical teeth 113 are re-attached, and the spool 11 can continue to rotate relative to the stopping wheel 142. When the spool 11 is to be reversely rotated, the second bevel gear 113 cannot move the stopper wheel 142 distally due to the obstruction of the first bevel gear 1421, resulting in the spool 11 not being reversely rotated. Thus, when the spool 11 stops rotating, the flexible elongate member 201 can be locked within the radial space 13 between the spool 11 and the outer housing 12. The radial space 13 is a space formed by the winding shaft 11 and the main case 122, and the radial space 13 is a part of the installation space. In the illustrated example, the spool 11 is rotatable right-handed, i.e., clockwise, with respect to the detent wheel 142. Of course, in other examples, the spool 11 may rotate left-hand, i.e., counter-clockwise, relative to the stop wheel 142.
Referring to fig. 10-12, delivery assembly 20 includes an elongate connection assembly. The distal end of the elongate connection member is removably connected to the proximal end of the spool 11. In this way, the winding shaft 11 can be controlled to rotate to wind the flexible elongate member 201 (as shown in fig. 2) by means of an elongate connection sleeve connected to the winding shaft 11, thereby achieving the crimping of the annulus 1. When the contraction of the annulus 1 is completed, the elongate connection sleeve may be disconnected from the spool 11 and the delivery assembly 20 may be removed from the body.
In some embodiments, the elongated connection kit includes a connection rod 21 and a connection tube 22, wherein the connection rod 21 is movably disposed in the connection tube 22. The distal ends of the connection rods 21 and the connection tube 22 are detachably connected to the spool 11, respectively. Specifically, in the connecting rod 21 and the connecting tube 22, one of the distal ends is screwed with the spool 11, and the other distal end is movably sleeved with the spool 11 and is relatively locked against rotation. It will be appreciated that the elongate connecting sleeve is assembled with the wire takeup 10 by connection of the connecting rod 21 and the connecting tube 22 to the spool 11. Wherein, through the threaded connection of the connecting rod 21 (or the connecting rod 22) and the spool 11, the connecting rod 22 (or the connecting rod 21) and the spool 11 can be ensured to be always sleeved and relatively prevented from rotating. Thus, rotation of the drive connection tube 22 (or the connection rod 21) stably brings the spool 11 into rotation to wind the flexible elongate member 201, so that the flexible elongate member 201 is tightened to reduce the distance between adjacent anchors 202, thereby contracting the annulus 1 and treating mitral regurgitation or tricuspid regurgitation. The connecting rod 21 may be a solid rod or a hollow rod. Preferably, the connecting rod 21 is a solid rod.
Further, the delivery assembly 20 further includes a sheath 23, and the connecting tube 22 is movably disposed through the sheath 23. One of the sheath 23 and the outer housing 12 is provided with a claw 231, and the other is provided with a corresponding clamping groove 1223, and the claw 231 is clamped with the clamping groove 1223. Thus, the sheath 23 is connected to the outer case 12 by the engagement of the claw 231 with the engagement groove 1223, and is relatively prevented from rotating. In this way, during the process of tightening the flexible elongated member 201 by the wire takeup 10, the operator can fix the outer case 12 by fixing the sheath tube 23, and can control the rotation of the spool 11 relative to the outer case 12 by controlling the rotation of the connecting rod 21 or the connecting tube 22 to wind the flexible elongated member 201.
In the example illustrated, the distal end of the sheath 23 is provided with two jaws 231 and the main housing 122 of the outer housing 12 is provided at its proximal end with two corresponding detents 1223. The two claws 231 are respectively engaged with the two clamping grooves 1223 to realize the relative rotation stopping of the outer shell 12 and the sheath 23. In other embodiments, it is also possible that the main housing 122 of the outer housing 12 is provided with two jaws 231 at its proximal end. The distal end of the sheath tube 23 is provided with two corresponding clamping grooves 1223, and the two clamping claws 231 are respectively clamped with the two clamping grooves 1223, so that the relative rotation stopping of the outer shell 12 and the sheath tube 23 can be realized. In other embodiments, the number of the claws 231 and the card slots 1223 may be one, three or more.
As shown in fig. 10 and 11, the distal end of the connecting rod 21 is screwed with the spool 11, and the distal end of the connecting tube 22 is movably sleeved with the spool 11 and is relatively locked. Specifically, the proximal end of the spool 11 is provided with a socket portion 111, and the socket portion 111 is provided with a plug hole 112 extending from the proximal end face thereof in the axial direction thereof; wherein, the inner wall of the plug hole 112 is provided with a first thread. The distal end of the connecting rod 21 is provided with a plug-in portion 211, and the outer wall of the plug-in portion 211 is provided with a second thread matched with the first thread. The distal end outer wall of the connecting rod 21 is convexly provided with a first abutting part 212, and the first abutting part 212 is positioned at the proximal end side of the inserting part 211. The distal end of the connecting tube 22 is provided with a socket hole 221, and the inner wall of the distal end of the connecting tube 22 is convexly provided with a second abutting part 222, and the second abutting part 222 is positioned at one side of the proximal end of the socket hole 221. The distal outer wall of the connection tube 22 is further provided with a third abutting portion 223.
When the wire takeup 10 is connected to the conveying assembly 20, the claw 231 of the sheath 23 is firstly clamped with the clamping groove 1223 on the outer shell 12; then, the socket hole 221 of the connecting tube 22 is sleeved with the socket portion 111 of the spool 11, so that the second abutting portion 222 of the connecting tube 22 abuts against the proximal end surface of the socket portion 111, and the third abutting portion 223 of the connecting tube 22 can abut against the proximal end surface of the claw 231 to ensure that the sheath tube 23 is kept connected with the outer housing 12. The socket hole 221 and the socket portion 111 are opposite to each other to stop rotation, and the two can be matched with a plane and an arc surface to realize opposite rotation, and can also be matched with a clamping strip and a clamping groove to realize opposite rotation, and can also be matched with a plurality of planes to realize opposite rotation, which is not limited by the invention. Then, the plug portion 211 of the connecting rod 21 is screwed with the plug hole 112 of the spool 11, so that the first abutting portion 212 of the connecting rod 21 abuts the second abutting portion 222 of the connecting tube 22 between the second abutting portion and the sleeve connecting portion 111, and the connecting tube 22 is ensured to be in sleeve connection with the spool 11. Thus, the connecting pipe 22 and the spool 11 are always sleeved and relatively prevented from rotating by the threaded connection of the connecting rod 21 and the spool 11.
As shown in fig. 12, the distal end of the connection tube 22 is screwed with the spool 11, and the distal end of the connection rod 21 is movably coupled with the spool 11 and is relatively locked. Specifically, the proximal end of the spool 11 is provided with a socket portion 111, and the socket portion 111 is provided with a plug hole 112 extending from the proximal end face thereof in the axial direction thereof; wherein, the outer wall of the sleeve joint part 111 is provided with a first thread. The distal end of the connecting rod 21 is provided with a socket 211. The distal end outer wall of the connecting rod 21 is convexly provided with a first abutting part 212, and the first abutting part 212 is positioned at the proximal end side of the inserting part 211. The distal end of the connection tube 22 is provided with a socket hole 221; wherein, the inner wall of the socket hole 221 is provided with a second thread matched with the first thread. The distal end inner wall of the connecting tube 22 is convexly provided with a second abutting part 222, and the second abutting part 222 is positioned at the proximal end side of the sleeve joint hole 221. The distal outer wall of the connection tube 22 is further provided with a third abutting portion 223.
When the wire takeup 10 is connected to the conveying assembly 20, the claw 231 of the sheath 23 is firstly clamped with the clamping groove 1223 on the outer shell 12; then, the plug-in portion 211 of the connecting rod 21 is sleeved with the plug-in hole 112 of the spool 11, so that the first abutting portion 212 of the connecting rod 21 abuts against the proximal end face of the sleeve-in portion 111 of the spool 11. The plug portion 211 and the plug hole 112 are opposite to each other in rotation, and the two may be opposite to each other through the cooperation of a plane and an arc surface, or may be opposite to each other through the cooperation of a clamping strip and a clamping groove, or may be opposite to each other through the cooperation of a plurality of planes. Then, the socket hole 221 of the connection tube 22 is screwed with the socket portion 111 of the spool 11, so that the second abutting portion 222 of the connection tube 22 abuts the first abutting portion 212 of the connection rod 21 between the second abutting portion and the socket portion 111 to ensure that the connection rod 21 is kept in socket with the spool 11, and the third abutting portion 223 of the connection tube 22 abuts the proximal end face of the claw 231 to ensure that the sheath tube 23 is kept connected with the outer housing 12. Thus, the connecting rod 21 and the spool 11 are always sleeved and relatively prevented from rotating by the threaded connection of the connecting pipe 22 and the spool 11.
Because the distal end of one of the connecting rod 21 and the connecting pipe 22 is in threaded connection with the winding shaft 11, the distal end of the other one of the connecting rod 21 and the connecting pipe 22 is movably sleeved with the winding shaft 11 and relatively prevented from rotating, the winding shaft 11 is driven to rotate by actively driving the connecting rod 21 and the connecting pipe 22 to wind the flexible elongated member 201, on one hand, the condition that the threaded connection of the connecting rod 21 (or the connecting pipe 22) and the winding shaft 11 is released in advance when an ideal operation effect (such as a ring shrinkage effect) is not achieved can be avoided, the connecting pipe 22 (or the connecting rod 21) and the winding shaft 11 are ensured to be always sleeved with each other, and the winding shaft 11 can be stably driven to rotate to wind the flexible elongated member 201 until the operation effect is ideal, and the stability of the operation is improved; on the other hand, the screw connection between the connecting rod 21 (or the connecting tube 22) and the spool 11 is prevented from being tightened more and more, which makes the connection difficult to be released, and the safety and reliability of the operation are improved.
Referring to fig. 13-17, the operating handle 30 includes a drive assembly 40. The drive assembly 40 is coupled to the proximal end of the elongate connection sleeve to synchronize movement of the elongate connection sleeve with the drive assembly 40. Specifically, the driving assembly 40 includes a first rotating member 41 and a second rotating member 42, and the second rotating member 42 movably penetrates the first rotating member 41. The first rotating member 41 is connected to the proximal end of the connection tube 22 to move the connection tube 22 in synchronization with the first rotating member 41. The second rotation member 42 is connected to the proximal end of the connection rod 21 to move the connection rod 21 in synchronization with the second rotation member 42. Thus, when the first rotating member 41 and the second rotating member 42 are relatively locked, the connecting rod 21 and the connecting pipe 22 can be synchronously rotated by driving the first rotating member 41 or the second rotating member 42 to rotate; when the first rotating member 41 and the second rotating member 42 are rotatable relatively, the first rotating member 41 is driven to rotate, the connecting pipe 22 rotates synchronously with the first rotating member 41 or the connecting pipe 22 is disconnected from the thread connection of the spool 11; the second rotating member 42 is driven to rotate, and the connecting rod 21 rotates synchronously with the second rotating member 42 or the connecting rod 21 is disengaged from the screw connection with the spool 11.
Further, the driving assembly 40 further includes a connection pipe fixing member 43 and a connection pipe fixing member 44. The proximal end of the connection tube 22 is fixedly connected to a connection tube fixing member 43, and the connection tube fixing member 43 is fixedly connected to the first rotating member 41. The proximal end of the connecting rod 21 is fixedly connected to a connecting rod fixing member 44, and the connecting rod fixing member 44 is connected to the second rotating member 42 and is relatively stopped from rotating with the second rotating member 42. Thus, the connection pipe 22 and the first rotating member 41 can be rotated and moved synchronously by the connection of the connection pipe fixing member 43; the connecting rod 21 and the second rotating member 42 can be rotated synchronously by the connection of the connecting rod fixing member 44.
In the illustrated example, the first rotating member 41 includes a rotating portion 411 and a fitting portion 412 provided at a distal end of the rotating portion 411. The proximal end face of the first rotating member 41 self-rotating portion 411 is provided with a first mounting hole 413 extending in the axial direction thereof, and the distal end face of the first rotating member 41 self-assembling portion 412 is provided with a second mounting hole 414 extending in the axial direction thereof, the second mounting hole 414 being in axial communication with the first mounting hole 413. Wherein the aperture of the second mounting hole 414 is smaller than the aperture of the first mounting hole 413.
The connection pipe fixing member 43 is axially penetrated and fixed in the second mounting hole 414, and the connection pipe 22 is penetrated and fixed in the connection pipe fixing member 43. The connection pipe fixing member 43 includes a first fixing portion 431 and a second fixing portion 432 provided at the first fixing portion 431. The first fixing portion 431 is axially inserted and fixed in the second mounting hole 414, and the second fixing portion 432 is exposed outside the distal end of the second mounting hole 414 and fixedly connected to the proximal end of the connection tube 22, for example, by a fastener such as a screw or a jackscrew. The first fixing portion 431 and the second fixing portion 432 are rectangular columns, and a radial cross-sectional area of the second fixing portion 432 is larger than that of the first fixing portion 431. The radial cross-sectional shape of the second mounting hole 414 is a rectangular hole corresponding to the first fixing portion 431. In this way, by matching the second mounting hole 414 with the first fixing portion 431, during the process that the first fixing portion 431 is penetrating through the second mounting hole 414, the first fixing portion 431 and the second mounting hole 414 can be limited to rotate relatively, so that the first fixing portion 431 is fixed in the second mounting hole 414. In addition, the radial cross-sectional area of the second fixing portion 432 is larger than that of the first fixing portion 431, so that positioning during assembly is facilitated, and assembly time is reduced. In other embodiments, the first fixing portion 431 and the second mounting hole 414 are also other shapes that can limit the relative rotation of the two, which is not limited in the present invention. Of course, the connecting tube fixing member 43 may be omitted, and the proximal end of the connecting tube 22 may be directly fixed in the second mounting hole 414 of the first rotating member 41 to achieve a fixed connection.
The second rotating member 42 is movably disposed in the first mounting hole 413 along the axial direction. The second rotating member 42 includes a rotation stopping portion 421 and a connecting portion 422 disposed at a distal end of the rotation stopping portion 421. The second rotation member 42 is provided with a third mounting hole 423 extending in the axial direction thereof from the proximal end surface of the rotation stopper 421. The second rotation member 42 is provided with a fourth mounting hole 424 extending in the axial direction thereof from the distal end face of the connecting portion 422. The fourth mounting hole 424 communicates axially with the third mounting hole 423. Wherein the aperture of the fourth mounting hole 424 is smaller than the aperture of the third mounting hole 423. The fourth mounting hole 424 allows the connection rod 21 to pass through.
The connecting rod fixing piece 44 is movably arranged in the third mounting hole 423 in a penetrating way and is opposite to the third mounting hole 423 in a rotation stopping way. The connecting rod 21 is threaded and secured in the connecting rod fixture 44, for example, by fasteners such as screws, jackscrews, etc. The connecting rod fixing member 44 is a rectangular cylinder, and the third mounting hole 423 is a rectangular hole corresponding to the connecting rod fixing member 44. Thus, through the cooperation of the rectangular column body and the rectangular hole, the connecting rod fixing piece 44 movably penetrates through the third mounting hole 423 and is stopped relative to the third mounting hole 423. Since the link fixing member 44 is relatively stopped from rotating with the third mounting hole 423 of the second rotating member 42, the link 21 is relatively stopped from rotating with the second rotating member 42. Thus, the connecting rod 21 can be controlled to rotate synchronously by controlling the rotation of the second rotating member 42.
In other embodiments, the connecting rod fixing member 44 may be fixedly connected to the second rotating member 42, and the connecting rod 21 is fixedly inserted into the second rotating member 42 through the connecting rod fixing member 44. At this time, the connecting rod 21 and the second rotating member 42 can be rotated and moved synchronously. Of course, the connecting rod fixing member 44 may be omitted, and the proximal end of the connecting rod 21 may be directly fixed in the third mounting hole 423 of the second rotating member 42 to achieve a fixed connection.
Referring to fig. 18 to 20, the operating handle 30 includes an anti-mistaking-for-roll assembly 50. The anti-mistaking-reel assembly 50 includes a stroke mechanism 51 and a slide mechanism 52. The travel mechanism 51 includes a first transmission member 511 and a second transmission member 512 movably connected. The first transmission member 511 is fixedly connected to the driving assembly 40, the second transmission member 512 is movably connected to the sliding mechanism 52 along the axial direction, and the sliding mechanism 52 is used for limiting the rotation of the second transmission member 512. When the driving assembly 40 rotates in the first rotation direction to drive the spool 11 to wind the flexible elongated member 201, the first transmission member 511 rotates synchronously with the driving assembly 40, so that the second transmission member 512 moves axially and proximally or distally relative to the first transmission member 511. The wire rewinding device 100 has an indication state. In the indicated condition, second transmission member 512 is constrained from continuing to move axially proximally or from continuing to move axially distally to constrain drive assembly 40 from continuing to rotate in the first rotational direction.
In the anti-mistaking winding device 100 provided by the invention, because the first transmission member 511 is fixedly connected with the driving assembly 40, when the driving assembly 40 rotates along the first rotation direction and drives the winding shaft 11 to rotate through the slender connecting sleeve member to wind the flexible elongated member 201, the first transmission member 511 rotates synchronously with the driving assembly 40, and the second transmission member 512 movably connected with the first transmission member 511 moves towards the proximal end (or moves towards the distal end) along the axial direction relative to the first transmission member 511. When the wire takeup device 100 is in the indexing position, the second transmission member 512 is constrained from continuing to move axially proximally (or continues to move axially distally), the drive assembly 40 cannot continue to rotate in the first rotational direction, and the spool 11 driven by the drive assembly 40 cannot continue to wind the flexible elongate member 201. Therefore, by controlling the distance the second transmission member 512 can move relative to the first transmission member 511, the wire takeup device 10 is sent to a suitable position on the flexible elongated member 201, so that the connection between the flexible elongated member 201 and the conveying member 300 is still located outside the wire takeup device 10 when the driving assembly 40 cannot continue to rotate in the first rotation direction. When the operator finds that the drive assembly 40 cannot continue to rotate in the first rotational direction, the connection between the delivery member 300 and the flexible elongate member 201 is released in time and the delivery member 300 is withdrawn from the body. In this way, the winding shaft 11 is ensured to wind only the flexible elongated member 201, the connection part of the flexible elongated member 201 and the conveying member 300 is prevented from being wound, and even the conveying member 300 is prevented from being wound, so that the condition that the conveying member 300 can be withdrawn after being cut in a body is avoided, and the safety of operation is improved. Moreover, when the delivery member 300 is withdrawn, since the spool 11 can only rotate in one direction along the first rotation direction and the spool 11 has wound a part of the flexible elongate member 201, the connection between the wire takeup 10 and the flexible elongate member 201 is stable, and separation of the wire takeup 10 and the flexible elongate member 201 due to heart beat can be avoided, which is advantageous for improving the operation stability and safety of the operation.
It should be noted that, when the wire winding device 100 is in the indication state, the operator releases the connection between the delivery member 300 and the flexible elongate member 201, and withdraws the delivery member 300 from the human body, and the flexible elongate member 201 selects a suitable implantation length, so that after the ring is contracted, the proximal end of the flexible elongate member 201 can be completely retracted into the outer housing 12 of the wire winding device 10, thereby avoiding the risk that the redundant portion of the flexible elongate member 201 floats in the heart chamber to increase the postoperative period.
Further, in the indicated state, the spool 11 has been wound around the flexible elongate member 201 at least two times. Preferably, in the indicated condition, the spool 11 has been wound around the flexible elongate member 201 at least three times. In this way, since the spool 11 can only rotate in one direction, that is, in the first rotation direction, the tension generated by the movement of the valve leaflet on the flexible elongated member 201 cannot rotate the spool 11 in the direction opposite to the first rotation direction, and a friction exists between the flexible elongated member 201 and the spool 11, it is ensured that the flexible elongated member 201 is not pulled by the tension generated by the movement of the valve leaflet, and separation of the flexible elongated member 201 from the retractor 10 due to heart beat can be avoided.
Referring to fig. 19 to 22, in some embodiments, the first transmission member 511 is fixedly connected to the first rotation member 41 so that the first transmission member 511 and the first rotation member 41 rotate synchronously. In this way, the first rotation member 41 is driven to rotate in the first rotation direction, and the connection pipe 22 is driven to rotate synchronously in the first rotation direction, so that the winding shaft 11 winds the flexible elongated member 201, and the first transmission member 511 is driven to rotate synchronously in the first rotation direction.
Specifically, the first transmission member 511 includes a first screw 5110, and the second transmission member 512 includes a second screw 5121. One of the first screw portion 5110 and the second screw portion 5121 is a threaded rod, and the other is a threaded sleeve, and the threaded sleeve is in threaded connection with the threaded rod. The threaded rod is provided with external threads, the threaded sleeve is provided with a hollow inner cavity and is provided with internal threads, and the threaded sleeve is connected with the threaded rod through the internal threads and the external threads matched with each other. Since the first transmission member 511 and the second transmission member 512 are screwed, the sliding mechanism 52 restricts the rotation of the second transmission member 512, and when the first transmission member 511 rotates synchronously with the first rotation member 41, the second transmission member 512 moves in the axial direction toward the proximal end or the distal end.
Further, the slide mechanism 52 includes a slider 521. The second transmission member 512 further includes a sliding portion 5123 provided on an outer circumferential wall of the second screw portion 5121. The sliding portion 5123 is axially movably connected to the sliding member 521, and the sliding portion 5123 is relatively locked to the sliding member 521. In this way, the second transmission member 512 and the slide mechanism 52 are relatively prevented from rotating by the connection of the slide 5123 and the slide 521. When the first transmission member 511 rotates in synchronization with the first rotation member 41, the second transmission member 512 is restrained from rotating by the slider 521 and is movable only in the axial direction.
In some embodiments, the anti-mistaking-roll assembly 50 is located on the distal side of the drive assembly 40. The thread direction of the threaded sleeve and the threaded rod is positively correlated with the first rotational direction in which the first rotational member 41 is rotated, causing the second transmission member 512 to move proximally in the axial direction. In the indicated state, the second transmission member 512 abuts against the first transmission member 511 or the first rotation member 41 in the axial direction.
It will be appreciated that the positive correlation of the thread direction of the threaded sleeve and the threaded rod with the first rotational direction means that when the first rotational direction is clockwise (i.e. right rotational movement), the thread direction corresponds to right-hand rotation; when the first rotational direction is counterclockwise (i.e., left rotational), the thread rotation direction corresponds to left-hand rotation. Thus, when the first transmission member 511 rotates along the first rotation direction with the first rotation member 41 relative to the second transmission member 512, the threaded rod is continuously screwed into the threaded sleeve, and since the first transmission member 511 is fixedly connected with the first rotation member 41 and cannot axially displace, the second transmission member 512 cannot rotate due to the limitation of the sliding member 521, and the second transmission member 512 moves axially proximally relative to the first transmission member 511 to be close to the first transmission member 511. Thus, when the second transmission member 512 moves to abut against the first transmission member 511 or the first rotation member 41, the second transmission member 512 cannot continue to move axially proximally relative to the first transmission member 511, and the first transmission member 511 cannot continue to rotate in the first rotation direction under the limitation of the sliding member 521 and the second transmission member 512, that is, the first rotation member 41 cannot continue to rotate in the first rotation direction. At this time, the wire takeup device 100 is in an instructed state, alerting an operator to release the connection of the transport member 300 to the flexible elongated member 201, and withdrawing the transport member 300.
In the illustrated example, the first threaded portion 5110 is a threaded rod and the second threaded portion 5121 is a threaded sleeve. The first transmission member 511 further includes a stop portion 5111 disposed at a proximal end of the threaded rod, and the stop portion 5111 is fixedly connected to the first rotation member 41. In the indicated state, the proximal end surface of the threaded sleeve abuts against the distal end surface of the stopper 5111. Thus, the first transmission member 511 is fixedly connected to the first rotation member 41 through the stopper 5111, and the first transmission member 511 can be rotated synchronously with the rotation of the first rotation member 41. In the indicated state, the proximal end surface of the threaded sleeve abuts against the distal end surface of the stopper 5111, that is, the second transmission member 512 abuts against the first transmission member 511 in the axial direction.
Specifically, the first transmission member 511 is located at a side of the connection pipe fixing member 43 facing away from the first rotation member 41. The stop 5111 of the first driver 511 abuts the connection tube mount 43 and is fixedly connected to the distal end of the first rotation member 41, for example, by a fastener such as a screw, a jackscrew, or the like. The connecting pipe 22 is movably arranged in the first transmission part 511 and the second transmission part 512. The stopper 5111 is substantially U-shaped, and has a high structural stability, so that the first transmission member 511 is conveniently connected to the first rotation member 41. Of course, the first transmission member 511 may be integrally formed with the first rotation member 41.
In other embodiments, the stop portion 5111 of the first transmission member 511 and the connecting tube fixing member 43 may be omitted, and the first threaded portion 5110 of the first transmission member 511 is axially protruding from the distal end surface of the first rotating member 41. When the wire rewinding device 100 is in the indicating state, the proximal end surface of the second screw 5121 of the second transmission member 512 abuts against the distal end surface of the first rotation member 41. At this time, the second transmission member 512 is likewise not continuously movable in the axial direction toward the proximal end, so that the first rotation member 41 and the first transmission member 511 are not continuously rotatable in the first rotation direction.
In other embodiments, the first screw 5110 may be a threaded sleeve, the second screw 5121 may be a threaded rod, and the second screw 5121 may be disposed in the first screw 5110 and screwed with the first screw 5110, which is not limited in the present invention.
Referring to fig. 9, 19, 20 and 22-24, in some embodiments, the wire winding device 100 further has a first state in which the second transmission member 512 abuts against the sliding member 521 in the axial direction. When the wire winding device 100 is switched from the first state to the indicating state, the first transmission member 511 rotates along the first rotation direction, and the second transmission member 512 moves axially and proximally relative to the first transmission member 511 until abutting against the first transmission member 511 or the first rotation member 41.
Since the second transmission member 512 moves axially proximally with respect to the first transmission member 511 when the first transmission member 511 rotates in a first rotational direction, the second transmission member 512 moves axially distally with respect to the first transmission member 511 when the first transmission member 511 rotates in a second rotational direction opposite the first rotational direction. Thus, when the wire takeup device 100 is in the first state, since the second transmission member 512 abuts the slider 521 in the axial direction, the second transmission member 512 is not movable distally in the axial direction under the restriction of the slider 521. Therefore, the second transmission member 512 is restricted from rotating in the second rotation direction with respect to the first transmission member 511, that is, the first rotation member 41 is restricted from rotating in the second rotation direction. That is, when the wire takeup device 100 is in the first state, the first transmission member 511 can only rotate in the first rotation direction, and the first rotation member 41 fixedly connected to the first transmission member 511 can only rotate in the first rotation direction. In this way, it is ensured that the operator can only drive the first rotating member 41 to rotate in the first rotating direction, so that the spool 11 rotates in the first rotating direction to wind the flexible elongated member 201 (due to the limitation of the stopping wheel 142, the spool 11 can only rotate in one direction), and the operation safety is prevented from being affected by misoperation. It should be noted that, when the wire winding device 100 is assembled, the wire winding device 100 is in the first state.
In the example of fig. 9, the spool 11 can only rotate clockwise and cannot rotate counterclockwise due to the unidirectional rotational engagement of the spool 11 with the stopper wheel 142 in the wire takeup 10. If the first rotating member 41 rotates the connection tube 22 counterclockwise (i.e., the second rotating direction), there is a risk that the distal end of the connection tube 22 connected to the spool 11 is twisted off or fails, resulting in failure of the instrument by the operator who cannot control the rotation of the spool 11 to wind the flexible elongated member 201 through the first rotating member 41. Therefore, when the wire winding device 100 is in the first state, the operator can only drive the first rotating member 41 to rotate along the first rotating direction, which plays a foolproof role for the operator, thereby avoiding the twisting or failure of the connecting tube 22 caused by misoperation for the operator, and being beneficial to improving the operation safety and the overall structural stability of the wire winding device 100.
In other embodiments, the anti-mistaking package 50 is located on the distal side of the drive assembly 40. The thread sleeve and the thread of the threaded rod rotate in opposite directions to the first rotation direction, in which the first rotation member 41 rotates, causing the second transmission member 512 to move distally in the axial direction. In the indicated state, the second transmission member 512 abuts the slider 521 in the axial direction.
It will be appreciated that the thread sleeve and the threaded rod have a thread turn in negative correlation with the first direction of rotation, meaning that when the first direction of rotation is clockwise (i.e. right-hand rotation), the thread turn corresponds to left-hand; when the first rotation direction is counterclockwise (i.e., left rotation), the thread rotation direction corresponds to right rotation. Thus, when the first transmission member 511 rotates along the first rotation direction with the first rotation member 41 relative to the second transmission member 512, the threaded rod is continuously screwed out of the threaded sleeve, and since the first transmission member 511 is fixedly connected with the first rotation member 41 and cannot axially displace, the second transmission member 512 cannot rotate due to the limitation of the sliding member 521, and the second transmission member 512 moves axially and distally relative to the first transmission member 511 and is far away from the first transmission member 511. Thus, when the second transmission member 512 moves to abut against the sliding member 521, the second transmission member 512 cannot continue to move distally in the axial direction relative to the first transmission member 511, and the first transmission member 511 cannot continue to rotate in the first rotation direction, that is, the first rotation member 41 cannot continue to rotate in the first rotation direction under the restriction of the sliding member 521 and the second transmission member 512. At this time, the wire takeup device 100 is in an instructed state, alerting an operator to release the connection of the transport member 300 to the flexible elongated member 201, and withdrawing the transport member 300.
In the first state, the second transmission member 512 abuts against the first transmission member 511 or the first rotation member 41 in the axial direction. When the wire winding device 100 is switched from the first state to the indicating state, the first transmission member 511 rotates along the first rotation direction, and the second transmission member 512 moves distally along the axial direction relative to the first transmission member 511 until abutting against the sliding member 521.
Since the second transmission member 512 moves axially distally relative to the first transmission member 511 when the first transmission member 511 rotates in a first rotational direction, the second transmission member 512 moves axially proximally relative to the first transmission member 511 when the first transmission member 511 rotates in a second rotational direction opposite the first rotational direction. Thus, when the wire rewinding device 100 is in the first state, since the second transmission member 512 abuts against the first transmission member 511 or the first rotation member 41 in the axial direction, the second transmission member 512 is not movable proximally in the axial direction under the restriction of the first transmission member 511 or the first rotation member 41. Therefore, the second transmission member 512 is restricted from rotating in the second rotation direction with respect to the first transmission member 511, that is, the first rotation member 41 is restricted from rotating in the second rotation direction. That is, when the wire takeup device 100 is in the first state, the first transmission member 511 can only rotate in the first rotation direction, and the first rotation member 41 fixedly connected to the first transmission member 511 can only rotate in the first rotation direction. In this way, it is ensured that the operator can only drive the first rotation member 41 to rotate in the first rotation direction to wind the flexible elongated member 201, avoiding erroneous operation to affect the operation safety.
In some embodiments, the sliding member 521 is provided with a sliding groove 501 extending in the axial direction, and the sliding portion 5123 is a sliding boss corresponding to the sliding groove 501. One axial end of the chute 501 is provided with an opening 5011, and the other axial end is provided with a stopper wall 5012. The sliding boss is axially movably connected to the sliding slot 501 from the opening 5011 and is opposite to the sliding slot 501. Thus, by the engagement of the sliding boss with the chute 501, the sliding portion 5123 is axially movably connected to the slider 521, and the sliding portion 5123 is relatively locked to the slider 521. Since the opening 5011 is disposed at one end of the chute 501, the sliding boss can be slidably connected to the chute 501 along the axial direction from the opening 5011 or can be slid out from the opening 5011 to be separated from the chute 501. After the sliding boss is separated from the chute 501, the sliding member 521 no longer limits the rotation of the sliding portion 5123, and the second transmission member 512 can rotate along with the rotation of the first transmission member 511 and the first rotation member 41.
When the wire takeup device 100 is in the first state, the sliding boss abuts against the stop wall 5012 of the chute 501, so that the second transmission member 512 abuts against the sliding member 521 in the axial direction, or the second transmission member 512 abuts against the first transmission member 511 or the first rotation member 41 in the axial direction. By limiting the sliding boss by the stop wall 5012, the first transmission member 511 can not rotate along the second rotation direction relative to the second transmission member 512, so that the first transmission member 511 can only rotate relative to the first rotation direction, thereby playing a role in reminding an operator. When the wire winding device 100 is switched from the first state to the indicating state, the first transmission member 511 rotates relative to the second transmission member 512 along the first rotation direction, and the sliding boss moves away from the stop wall 5012 in the axial direction until the first transmission member 511 cannot rotate relative to the second transmission member 512 along the first rotation direction. At this time, the sliding boss is not separated from the chute 501 from the opening 5011, and the second transmission member 512 is still opposite to the sliding member 521.
The slider 521 includes a first slider 5211, a second slider 5212 and a connection block 5213. The first slider 5211 and the second slider 5212 are disposed opposite to each other along a radial direction and parallel to the axial direction, and opposite ends of the connecting block 5213 are respectively connected to the distal end of the first slider 5211 and the distal end of the second slider 5212, such that the slider 521 is substantially U-shaped.
In one example, the sliding portion 5123 is a sliding boss protruding from an outer circumferential wall of the distal end of the second screw portion 5121, and the sliding boss may be a rectangular boss. The number of the sliding bosses is two, and the two sliding bosses are symmetrically arranged along the central axis of the second threaded connection portion 5121, so that the stability of relative rotation stopping of the second transmission piece 512 and the sliding piece 521 is improved, and meanwhile, the sliding bosses move axially and stably relative to the sliding groove 501. Correspondingly, the first slider 5211 and the second slider 5212 of the slider 521 are respectively provided with a slide groove 501 extending in the axial direction thereof. The chute 501 may be a rectangular slot that matches the shape of the sliding boss. The sliding boss and the sliding groove 501 may have other shapes, such as trapezoid, which can realize relative rotation stopping, and the invention is not limited thereto. In other embodiments, the number of the sliding bosses and the sliding grooves 501 may be one or more, such as three, four, etc., which is not limited by the present invention.
In the case where the thread direction of the threaded sleeve and the threaded rod are positively correlated with the first rotational direction, the proximal ends of both runners 501 are provided with openings 5011, and the distal ends of both runners 501 are provided with stop walls 5012. When the wire winding device 100 is in the first state, each sliding boss abuts against the stop wall 5012 of the corresponding chute 501, and the threaded rod portion is located outside the threaded sleeve. At this time, if the first transmission member 511 rotates in the second rotation direction (counterclockwise as illustrated) relative to the second transmission member 512, the second transmission member 512 has a tendency to move distally in the axial direction. The second transmission member 512 is prevented from moving axially distally due to the abutment of the sliding boss against the stop wall 5012 of the chute 501, and the second transmission member 512 is not rotatable such that the first transmission member 511 is not rotatable with respect to the second transmission member 512 in the second rotational direction. Therefore, when the wire winding device 100 is in the first state, the first transmission member 511 can only rotate along the first rotation direction (clockwise in the drawing) along with the first rotation member 41 relative to the second transmission member 512, so as to play a role in reminding an operator, ensure that the operator can only drive the first rotation member 41 to rotate along the first rotation direction to wind the flexible elongated member 201, avoid the twisting or failure of the connecting tube 22 caused by misoperation of the operator, and facilitate improvement of the operation safety and the overall structural stability of the wire winding device 100.
When the wire winding device 100 is converted from the first state to the indicating state, the first rotating member 41 drives the first driving member 511 to rotate relative to the second driving member 512 along the first rotating direction, and the sliding boss moves axially and proximally in the sliding slot 501, so that the second driving member 512 moves axially and proximally until the second threaded portion 5121 of the second driving member 512 abuts against the stop portion 5111 of the first driving member 511. At this time, the sliding portion 5123 is not separated from the chute 501 from the opening 5011, the sliding portion 5123 is still located in the chute 501, and the sliding portion 5123 is still relatively stopped from rotating with the slider 521. The second transmission member 512 is still only axially movable. If the first transmission member 511 continues to rotate in the first rotation direction relative to the second transmission member 512, the second transmission member 512 has a tendency to move proximally in the axial direction, and the second screw connection portion 5121 of the second transmission member 512 abuts against the stop portion 5111 of the first transmission member 511 to prevent the second transmission member 512 from continuing to move proximally in the axial direction, so that the first transmission member 511 and the first rotation member 41 are limited from continuing to rotate in the first rotation direction.
Of course, in the case where the thread sleeve and the thread of the threaded rod are rotated in a direction opposite to the first rotation direction, the distal ends of both slide grooves 501 are provided with openings 5011, and the proximal ends of both slide grooves 501 are provided with stopper walls 5012. When the wire winding device 100 is in the first state, the two sliding bosses of the sliding piece 521 respectively abut against the stop walls 5012 at the proximal ends of the two sliding grooves 501, and the threaded rod portion is located outside the threaded sleeve. At this time, if the first transmission member 511 rotates in the second rotation direction relative to the second transmission member 512, the second transmission member 512 has a tendency to move proximally along the axial direction. Since the two sliding bosses of the sliding member 521 are respectively abutted against the stop walls 5012 at the proximal ends of the two sliding grooves 501, the second transmission member 512 is prevented from moving axially toward the proximal end, and the second transmission member 512 is not rotatable, so that the first transmission member 511 is not rotatable relative to the second transmission member 512 in the second rotation direction. Therefore, when the wire winding device 100 is in the first state, the first transmission member 511 can only rotate along the first rotation direction along with the first rotation member 41 relative to the second transmission member 512, so as to play a role in reminding an operator, ensure that the operator can only drive the first rotation member 41 to rotate along the first rotation direction to wind the flexible elongated member 201, avoid the twisting or failure of the connecting tube 22 caused by misoperation of the operator, and be beneficial to improving the operation safety and the overall structural stability of the wire winding device 100.
When the wire takeup device 100 is switched from the first state to the indicating state, the first transmission member 511 rotates relative to the second transmission member 512 along the first rotation direction, and the two sliding bosses of the sliding member 521 move axially distally in the sliding groove 501 of the second transmission member 512, that is, the second transmission member 512 moves axially distally relative to the sliding member 521 until the second screw connection portion 5121 of the second transmission member 512 abuts against the sliding member 521. At this time, the two sliding bosses of the sliding member 521 are still in the sliding groove 501 of the second transmission member 512, and the second transmission member 512 is still opposite to the sliding member 521. The second transmission member 512 is still only axially movable. When the wire rewinding device 100 is in the indicating state, the first rotating member 41 and the first transmission member 511 are still not rotatable relative to the second transmission member 512 in the first rotating direction.
In other embodiments, the sliding portion 5123 is provided with a sliding groove 501 extending in the axial direction, and the sliding member 521 is provided with a sliding boss corresponding to the sliding groove 501. The distal end of the chute 501 in the axial direction is provided with an opening 5011, and the sliding boss is axially movably connected to the chute 501 from the opening 5011 and is opposite to the chute 501. Specifically, the first slider 5211 and the second slider 5212 of the slider 521 are provided with sliding bosses, respectively. The number of the sliding portions 5123 is two, and the sliding portions 5123 are provided with the slide grooves 501 extending in the axial direction. The distal end of the chute 501 is provided with an opening 5011 and the proximal end of the chute 501 may be provided with a stop wall 5012 or without a stop wall 5012. The two sliding bosses of the sliding member 521 are axially movably coupled to the two sliding grooves 501 from the openings of the two sliding grooves 501 of the sliding portion 5123, respectively. Thus, whether the thread sleeve and the threaded rod are positively or negatively threaded in the first rotational direction, the distal end of the chute 501 is provided with an opening to ensure that the slide 5123 can be separated from the slide 521.
Referring to fig. 13, 19, 20 and 24-27, in some embodiments, the wire-rewinding device 100 further has a second state. In the second state, the slider 521 is disconnected from the sliding portion 5123, and the first rotation member 41 can continue to rotate in the first rotation direction. When the wire takeup device 100 is shifted from the indicating state to the second state, the slider 521 is moved axially and distally relative to the second transmission member 512 until the slider 521 is disconnected from the sliding portion 5123. It will be appreciated that distal movement of the slide 521 relative to the second transmission member 512 disengages the slide boss from the opening 5011 of the chute 501, thereby decoupling the slide 521 from the slide 5123. Thus, since the slider 521 is disconnected from the sliding portion 5123 in the second state, the second transmission member 512 can be rotated; also, since the second transmission member 512 is screwed to the first transmission member 511, the second transmission member 512 can be rotated in synchronization with the first transmission member 511. Thus, when the wire winding device 100 is in the second state, the first rotating member 41 can drive the first and second transmitting members 511 and 512 to rotate continuously along the first rotating direction to wind the flexible elongated member 201, so as to realize the subsequent ring shrinking of the valve ring 1.
In the illustrated example, as shown in fig. 20 and 22, the connection block 5213 of the slider 521 is provided with connection pipe through holes 5214 penetrating through opposite end surfaces thereof in the axial direction, and the slider 521 is movably fitted over the connection pipe 22 through the connection pipe through holes 5214. The connection tube 22 sequentially passes through the slider 521, the second transmission member 512, the first transmission member 511, and the connection tube fixing member 43 from the distal end toward the proximal end. In this way, the sliding member 521 can move along the connecting tube 22 relative to the second transmission member 512, which is beneficial to the stable movement of the sliding member 521 along the axial direction, so as to facilitate the transition of the wire winding device 100 from the indicating state to the second state.
In some embodiments, the operating handle 30 further includes a handle housing 60. The slider 521 is accommodated in the handle case 60 so as to be axially movable, and is locked against rotation relative to the handle case 60. The first transmission member 511 is rotatably accommodated in the handle housing 60, and the first transmission member 511 is axially fixed relative to the handle housing 60. In the first state and the indication state, the slider 521 is axially fixed with respect to the handle housing 60. When the wire takeup device 100 is switched from the indicating state to the second state, the slider 521 is moved axially and distally relative to the handle housing 60 until the slider 521 is disconnected from the slider 5123. In this way, the respective components of the operating handle 30 are assembled as one body through the handle housing 60, improving the overall structural stability of the wire takeup device 100.
Further, the anti-mistaking-roll assembly 50 further includes a limiting mechanism 53, the sliding member 521 is provided with lugs 5215 along two radial sides thereof, and the sliding mechanism 52 further includes a sliding rod 522 and a first elastic member 523 sleeved on the sliding rod 522. The sliding rod 522 is movably inserted into the supporting lugs 5215 along the axial direction. The inner cavity of the handle shell 60 is provided with a limiting clamping seat 61, the sliding rod 522 is fixedly arranged on the limiting clamping seat 61 in a penetrating manner along the axial direction, and two ends of the first elastic piece 523 are respectively abutted against the supporting lugs 5215 and the limiting clamping seat 61. In the first state and the indicating state, the limiting mechanism 53 limits the sliding member 521 to axially move relative to the handle housing 60, so that the first elastic member 523 maintains elastic deformation. When the wire winding device 100 is switched from the indicating state to the second state, the limit mechanism 53 releases the restriction on the axial movement of the slider 521, and the elastic deformation amount of the first elastic member 523 decreases, so that the slider 521 moves distally in the axial direction until the slider 521 is disconnected from the sliding portion 5123.
In this way, in the first state and the indicated state, the slider 521 is axially fixed with respect to the handle housing 60 by the restriction of the stopper mechanism 53. Since the first transmission member 511 is axially fixed with respect to the handle housing 60, the second transmission member 512 is only axially movable under the restriction of the slider 521 when the first transmission member 511 is driven to rotate in the first rotational direction with respect to the handle housing 60 by the first rotation member 41.
When the wire takeup device 100 is withdrawn from the carrier 300 in the instructed state, the restriction of the axial movement of the slider 521 by the stopper mechanism 53 is released, and the wire takeup device 100 can be switched from the instructed state to the second state. Due to the deformation of the first elastic member 523, the sliding member 521 can move distally in the axial direction relative to the second transmission member 512 under the elastic force of the first elastic member 523 until the sliding member 521 is disconnected from the sliding portion 5123 of the second transmission member 512. Through the first elastic element 523, an operator can switch the wire winding device 100 from the indicating state to the second state only by operating the limiting mechanism 53, which is convenient for operation and is beneficial to saving operation time.
In the illustrated example, the opposite surfaces of the first slider 5211 and the second slider 5212 are provided with lugs 5215, respectively, i.e., the slider 521 is provided with lugs 5215 along both radial sides thereof. Wherein, two lugs 5215 are provided with a slide bar through hole 5216 penetrating through opposite end surfaces thereof along the axial direction. The number of the sliding rods 522 is two, and each sliding rod 522 is movably arranged in the sliding rod through hole 5216 of the supporting lug 5215 along the axial direction. The number of the first elastic members 523 is two, and each first elastic member 523 is movably sleeved on the sliding rod 522 and located at the proximal side of the supporting lug 5215. The first elastic member 523 may be, but is not limited to, a spring, a tubular elastic sheet, an elastic bellows, etc.
The handle housing 60 includes a first housing 62 and a second housing 63 that are engaged with each other. The first housing 62 and the second housing 63 are buckled to form a hollow inner cavity. Wherein, the surface of the second housing 63 facing the first housing 62 is provided with a limiting clamping seat 61. Specifically, the limiting clamping seat 61 includes two axially spaced partition boards 611, two radial ends of each partition board 611 are respectively provided with a clamping position 612, each clamping position 612 is provided with a through hole, and the central connecting lines of the through holes of the four clamping positions 612 basically encircle a rectangle. Each slide bar 522 is axially penetrated in the through holes of the clamping positions 612 on the same side of the two partition boards 611, and the slide bar 522 can be fixed through the clamping springs, so that the slide bar 522 can not axially move relative to the limiting clamping seat 61. The lugs 5215 movably sleeved on the sliding rod 522 are positioned between the two partition plates 611. Both ends of the first elastic member 523 are respectively abutted against the lugs 5215 and the proximal partition 611. The slider 521 is axially movably accommodated in the handle housing 60 by the engagement of the lugs 5215 with the slide bar 522 and the engagement of the slide bar 522 with the stopper 61, and is locked relative to the handle housing 60. The slider 521 is axially movable with the lugs 5215 between the two baffles 611.
The inner cavity of the handle shell 60 is also provided with a fixing clamping groove 64, and the fixing clamping groove 64 is positioned at the proximal end side of the limiting clamping seat 61. Specifically, a first half arc-shaped groove is formed on the surface of the second casing 63 facing the first casing 62, a second half arc-shaped groove is formed on the surface of the first casing 62 facing the second casing 63, and after the first casing 62 and the second casing 63 are clamped and buckled, the first half arc-shaped groove and the second half arc-shaped groove form a fixing clamping groove 64. The distal end of the fitting portion 412 of the first rotating member 41 is provided with a locking protrusion 4123 in a ring shape, and the locking protrusion 4123 is rotatably received in the fixing locking groove 64. Thus, the first rotating member 41 is rotatable relative to the handle housing 60 and axially fixed relative to the handle housing 60. The proximal partition 611 of the limiting clamping seat 61 is provided with an arc-shaped through hole 65, and is matched with the second threaded connection portion 5121 of the second transmission member 512, when the sliding member 521 is separated from the second transmission member 512, the proximal partition 611 can provide support for the second transmission member 512, so that the second transmission member 512 can stably rotate, and shaking is reduced.
In the illustrated example, when the wire takeup device 100 is in the first state, the limiting mechanism 53 limits the sliding member 521 from moving axially relative to the handle housing 60, and the proximal end of the sliding member 521 abuts against the proximal partition 611 of the limiting holder 61. The first elastic member 523 is abutted between the lugs 5215 and the proximal partition 611, and the first elastic member 523 is compressed. The second transmission member 512 is screwed to the first transmission member 511, and a distal end of the second transmission member 512 is axially movably connected to the sliding member 521, and is opposite to the sliding member 521 and abuts against the sliding member 521. At this time, the first rotating member 41 and the first transmission member 511 may only rotate in the first rotating direction relative to the handle housing 60, and the second transmission member 512 may move axially and proximally relative to the sliding member 521 until the proximal end of the second transmission member 512 abuts against the stop portion 5111 of the first transmission member 511.
When the wire winding device 100 is switched from the first state to the indicating state, the limiting mechanism 53 still limits the sliding member 521 to move axially relative to the handle housing 60, and the sliding member 521 and the first elastic member 523 maintain the wire winding device 100 in the first state. At this time, the distal end of the second transmission member 512 is still connected to the slider 521 in a rotationally locked manner, and the first rotation member 41 is not capable of driving the first transmission member 511 to rotate in the first rotation direction relative to the handle housing 60.
When the operator releases the connection between the delivery member 300 and the flexible elongated member 201 and withdraws the delivery member 300 from the body, the stopper mechanism 53 releases the restriction of the axial movement of the slider 521, and the wire rewinding device 100 can be switched from the instruction state to the second state. At this time, the compressed first elastic member 523 gradually returns to the natural state, and under the action of the elastic force of the first elastic member 523, the support lugs 5215 drive the slider 521 to move distally along the sliding rod 522 (i.e., axially) until the distal end of the slider 521 abuts against the distal end partition 611 provided on the limiting clamping seat 61, the sliding portion 5123 of the second transmission member 512 is separated from the sliding groove 501 of the slider 521, the second transmission member 512 is disconnected from the slider 521, and the second transmission member 512 can rotate freely. The first rotating member 41 can drive the first driving member 511 and the second driving member 512 to rotate continuously along the first rotating direction, so as to achieve the ring shrinking operation. Note that, when the wire winding device 100 is in the second state, the first elastic member 523 may be restored to the natural state or may be still in the compressed state, which is not limited in the present invention.
In other embodiments, the opposite ends of the first elastic member 523 may also abut between the distal partition 611 and the lugs 5215 of the limiting holder 61. Wherein, the first elastic member 523 is fixedly connected with the distal partition 611 and the lugs 5215. When the wire winding device 100 is in the first state and the indicating state, the first elastic member 523 is stretched. When the winding device 100 is switched from the indicating state to the second state, the stretched first elastic member 523 gradually returns to the natural state. Under the action of the elastic force of the first elastic element 523, as the elastic deformation amount of the first elastic element 523 decreases, the lugs 5215 drive the slider 521 to gradually move distally until the distal end of the slider 521 abuts against the distal end partition 611 of the limiting clamping seat 61. At this time, the sliding member 521 is separated from the second transmission member 512, and the first rotation member 41 can drive the first transmission member 511 and the second transmission member 512 to continue to rotate along the first rotation direction, so as to achieve the ring shrinking operation. Note that, when the wire winding device 100 is in the second state, the first elastic member 523 may be restored to the natural state or may be still in the stretched state, which is not limited in the present invention.
Referring to fig. 13, 19, 20, 22, 24 and 26, in some embodiments, the slider 521 is provided with a limiting groove 5217 and a sliding groove 5218 communicating with a proximal end of the limiting groove 5217. The radial dimension of the limit groove 5217 is greater than the radial dimension of the slide groove 5218. The limiting mechanism 53 comprises a limiting piece 531, and the limiting piece 531 movably penetrates through the handle shell 60 and is axially fixed relative to the handle shell 60. The stopper 531 includes a main body portion 5311 and a stopper portion 5312 provided at one end of the main body portion 5311. In the first state and the indication state, the limiting portion 5312 is at least partially located in the limiting groove 5217, and the limiting portion 5312 cooperates with the limiting groove 5217 to limit the sliding member 521 from moving axially relative to the handle housing 60. When the wire winding device 100 is switched from the indicating state to the second state, the whole of the limiting portion 5312 is separated from the limiting groove 5217, and the slider 521 moves distally in the axial direction relative to the handle housing 60 to move the main body portion 5311 from the limiting groove 5217 into the sliding groove 5218.
It will be appreciated that the radial dimension of the limit groove 5217 of the slider 521 is greater than the radial dimension of the slide groove 5218, such that the limit portion 5312 of the limit member 531 is axially limited in the limit groove 5217, and the limit member 531 is axially fixed relative to the handle housing 60, and the slider 521 cannot move relative to the handle housing 60 as long as the limit portion 5312 is partially located in the limit groove 5217. In this way, only by operating the limiting member 531 to make the limiting portion 5312 entirely separate from the limiting groove 5217, the sliding member 521 can be moved axially and distally to be disconnected from the second transmission member 512, so that the wire winding apparatus 100 is controlled to be switched from the indicating state to the second state, which is easy to operate and beneficial to saving the operation time of the surgery.
Further, the spacing mechanism 53 also includes an operating member 532. The limiting member 531 further includes a mounting portion 5313, where the mounting portion 5313 is disposed on a side of the limiting portion 5312 facing away from the main portion 5311. The first housing 62 is provided with a through hole 621, and the mounting portion 5313 is connected to the operating piece 532 located outside the handle housing 60 through the through hole 621. Thus, by the engagement of the mounting portion 5313 with the through hole 621, the stopper 531 is movably disposed through the handle housing 60 and is axially fixed with respect to the handle housing 60. The operation piece 532 located outside the handle housing 60 is designed to facilitate whether the limiting part 5312 of the limiting piece 531 is located in the limiting groove 5217.
The mounting portion 5313 is a column protruding from the limiting portion 5312 and facing away from the main portion 5311. The mounting portion 5313 includes a first connecting section 5313a and a second connecting section 5313b, wherein the first connecting section 5313a is located at a side of the second connecting section 5313b facing away from the limiting portion 5312, and is connected to the second connecting section 5313 b. The outer peripheral wall of the second connection section 5313b may be formed with a step. The first connection section 5313a is threaded and the second connection section 5313b may be threaded or unthreaded.
The mounting portion 5313 movably penetrates through the through hole 621 of the first housing 62, so that the first connecting section 5313a is located on a side of the first housing 62 facing away from the second housing 63, and the second connecting section 5313b is located on a side of the first housing 62 facing toward the second housing 63. An operating member 532 located outside the handle housing 60 is threadedly coupled to the first coupling section 5313 a.
When the wire takeup device 100 is switched from the indicating state to the second state, the operation member 532 moves in a direction away from the first housing 62 in the radial direction, and the stopper 531 moves with the operation member 532 until the step of the second connection section 5313b abuts against the surface of the first housing 62 facing the second housing 63. At this time, the whole of the stopper 5312 is separated from the stopper 5217, and the slider 521 is axially movable relative to the handle housing 60. The lug 5215 moves distally along the sliding rod 522 under the elastic force of the first elastic member 523, and the sliding member 521 moves distally along the axial direction of the lug 5215 relative to the handle housing 60 and the limiting member 531. That is, the stopper 531 moves axially proximally relative to the slider 521, and the main body 5311 of the stopper 531 moves from the stopper groove 5217 into the slide groove 5218 relative to the slider 521.
In some embodiments, the limiting mechanism 53 further includes a second elastic member 533, the second elastic member 533 is sleeved on the second connecting section 5313b of the mounting portion 5313, opposite ends of the second elastic member 533 respectively abut against the limiting portion 5312 and the first housing 62, and the second elastic member 533 is compressed. In this way, by the elastic force of the second elastic member 533, when the wire winding device 100 is in the first state and the indicating state, the limiting member 531 can always abut against the second housing 63, so that the resistance of the operating member 532 moving along the radial direction in a direction away from the first housing 62 is increased, and the limiting portion 5312 can always be stably located in the limiting groove 5217 under the condition that no external force pulls the operating member 532, so that the stability of limiting the axial movement of the sliding member 521 by the limiting member 531 is ensured.
In some embodiments, the end of the main body portion 5311 facing away from the limiting portion 5312 is further provided with a mounting boss 5314, wherein a radial dimension of the mounting boss 5314 is greater than a radial dimension of the main body portion 5311 and less than or equal to a radial dimension of the limiting portion 5312. The handle housing 60 is further provided with a mounting groove 66 at the surface of the second housing 63 facing the first housing 62. When the wire winding device 100 is in the first state and the indicating state, the mounting boss 5314 is received in the mounting groove 66, and the mounting groove 66 can also limit the axial movement of the limiting member 531 relative to the handle housing 60. The design of the mounting boss 5314 greatly increases the contact area between the limiting piece 531 and the second casing 63, is favorable for enhancing the stability of the limiting piece 531, and further ensures the stability of the limiting piece 531 for limiting the axial movement of the sliding piece 521.
It can be appreciated that the limiting member 531 is further provided with a connecting tube through hole 5315 extending along a radial direction for the connecting tube 22 to pass through, so as to avoid interference of the limiting member 531 to the connecting tube 22.
In some embodiments, the distal end of the handle housing 60 is provided with a threaded post 67, the operating handle 30 further comprises a securing head 70, the securing head 70 being provided with a threaded hole corresponding to the threaded post 67, the securing head 70 being secured to the distal end of the handle housing 60 by threaded connection of the threaded hole to the threaded post 67. At this time, the first housing 62 and the second housing 63 are prevented from being disconnected by the restriction of the fixing head 70, and the structural stability of the handle housing 60 is improved.
Referring to fig. 10, 12, 15-17 and 28-29, in some embodiments, one of the connecting rod 21 and the connecting tube 22 is screwed with the spool 11 at a distal end, and the other is movably sleeved with the spool 11 and is relatively locked against rotation. In the first state, the indicating state, and the second state, the first rotating member 41 and the second rotating member 42 are relatively prevented from rotating.
Thus, when the wire winding device 100 is in the first state, the indicating state and the second state, the first rotating member 41 and the connecting tube 22 move synchronously, the second rotating member 42 moves synchronously with the connecting tube 21, and the first rotating member 41 and the second rotating member 42 rotate relatively, and when the first rotating member 41 or the second rotating member 42 is driven to rotate, the first rotating member 41 and the second rotating member 42 rotate synchronously, so that the connecting tube 21 and the connecting tube 22 rotate synchronously, and the winding shaft 11 is driven to rotate. Thus, on one hand, when the ideal operation effect (ring shrinking effect) is not achieved, the condition that the threaded connection between the connecting rod 21 (or the connecting rod 22) and the winding shaft 11 is released in advance can be avoided, and the connecting rod 22 (or the connecting rod 21) and the winding shaft 11 are always sleeved, so that the winding shaft 11 can be stably driven to rotate to wind the flexible elongated member 201 until the operation effect achieves the ideal operation effect, and the stability of operation is improved; on the other hand, the screw connection between the connecting rod 21 (or the connecting tube 22) and the spool 11 is prevented from being tightened more and more, which makes the connection difficult to be released, and the safety and reliability of the operation are improved.
Further, the wire winding device 100 further has a third state in which the second rotating member 42 and the first rotating member 41 can rotate relatively. The second rotating member 42 moves axially and proximally relative to the first rotating member 41 such that the wire takeup device 100 is switched from the second state to the third state.
Thus, when the spool 11 is wound around the flexible elongate member 201 in the second state to achieve the desired surgical effect, the second rotational member 42 is retracted proximally to transition the wire takeup device 100 to the third state. At this time, the connecting rod 21 is released from the threaded connection with the spool 11 by driving the second rotating member 42 to rotate to drive the connecting rod 21 to rotate relative to the spool 11, or the connecting tube 22 is released from the threaded connection with the spool 11 by driving the first rotating member 41 to rotate to drive the connecting tube 22 to rotate relative to the spool 11, so that the wire takeup device 10 can be released from the distal end of the delivery assembly 20 and remain in the human body to maintain the ring shrinking effect of the annuloplasty structure 200 on the annulus 1.
In the illustrated example, the rotation stop portion 421 of the second rotation member 42 is a substantially rectangular cylinder, and the connection portion 422 of the second rotation member 42 is a cylinder. The first mounting hole 413 of the first rotating member 41 includes a first hole 4131 and a second hole 4132, the first hole 4131 is in axial communication with the second hole 4132, and the second hole 4132 is located at a distal end of the first hole 4131. The radial cross-sectional shape of the first hole 4131 is rectangular corresponding to the rotation stopper 421, and the radial cross-sectional shape of the second hole 4132 is circular corresponding to the connecting portion 422. In other embodiments, the rotation stopping portion 421 and the first hole 4131 may have other shapes, such as trapezoid, semicircle, etc., which can ensure that the rotation stopping portion and the first hole are relatively stopped, which is not limited in the present invention. When the rotation stop portion 421 of the second rotation member 42 is located in the first hole 4131 of the first mounting hole 413, the second rotation member 42 is stopped against the first rotation member 41; when all the rotation stopping portions 421 of the second rotation member 42 are located outside the first hole 4131, the second rotation member 42 can rotate relative to the first rotation member 41. Therefore, the second state and the third state can be switched by only moving the second rotating member 42 and changing the relative position of the rotation stop portion 421 and the first hole 4131.
Referring to fig. 13 and 18, in some embodiments, the operating handle 30 further includes a sealing assembly 80, and the sealing assembly 80 is fastened and fixed in the inner cavity of the handle housing 60 and is in sealing connection with the sheath 23. Specifically, the handle housing 60 is provided with a seal fixing groove 68, the seal fixing groove 68 is located at the distal end side of the distal end limiting clamping seat 61, and the seal assembly 80 is clamped and fixed in the seal fixing groove 68. The sheath 23 is thus fixedly coupled and sealed to the handle housing 60 by the seal assembly 80, improving the safety of the surgical procedure.
Next, the procedure of using the suture thread winding device 100 according to the embodiment of the present invention will be described with an example in which the suture thread winding device 10 is applied to annuloplasty and the annuloplasty is performed on the annulus 1. As shown in fig. 1, 10 and 24, the wire winding device 100 is in the first state after being assembled, the distal end of the connecting rod 21 is in threaded connection with the spool 11, the distal end of the connecting tube 22 is movably sleeved with the spool 11 and is relatively locked against rotation, and at this time, the first rotating member 41 can only rotate in the first rotating direction (clockwise direction) relative to the handle housing. The first transmission member 511 includes a threaded rod (i.e., the first threaded portion 5110), and the second transmission member 512 includes a threaded sleeve (i.e., the second threaded portion 5121) having a right-hand rotation direction with respect to the threaded rod.
S1, as shown in fig. 1 and 2, a plurality of anchors 202 of the annuloplasty structure 200 are implanted in the annulus 1, at which time the plurality of anchors 202 and the plurality of spacers 203 are alternately threaded onto the flexible elongate member 201. The wire takeup 10 is then threaded onto the flexible elongated member 201 along the delivery member 300 such that the wire takeup 10 is positioned adjacent the last anchor 202.
During this procedure, the operator observes the operation through the digital subtraction angiography device (Digital subtraction angiography, DSA) and ensures that the delivery of the retractor 10 to the vicinity of the last anchor 202 is approximately 3cm from the junction of the delivery member 300 and the flexible elongate member 201.
S2, as shown in fig. 4, 5, 13, 19 and 24, the handle housing 60 is fixed while the rotating portion 411 of the first rotating member 41 is rotated in the first rotating direction (i.e., clockwise direction). Since the sheath 23 is fixedly connected with the handle housing 60, the sheath 23 remains stationary during the rotation of the first rotation member 41; and the second rotating member 42 rotates along with the rotation of the first rotating member 41 to drive the connecting rod 21 and the connecting tube 22 to synchronously rotate, so as to drive the spool 11 to rotate relative to the outer housing 12 along the first rotation direction to wind the flexible elongated member 201.
During the rotation of the first rotating member 41, the first transmitting member 511 rotates synchronously with the first rotating member 41, and the second transmitting member 512 moves axially and proximally relative to the first transmitting member 511 under the limitation of the sliding member 521 until the second transmitting member 512 abuts against the first transmitting member 511, and the first rotating member 41 cannot continue to rotate in the first rotating direction. At this time, the wire rewinding device 100 is switched from the first state to the instruction state. The spool 11 has been wound around the flexible elongate member 201 two, three or more times, and the rotation of the spool 11 in the second rotational direction (i.e. counter-clockwise) and the friction between the flexible elongate member 201 and the spool 11 are limited by the stop wheel 142, ensuring that the wire retractor 10 is connected to the flexible elongate member 201 during leaflet movement. The operator can disconnect the delivery member 300 from the flexible elongate member 201 and withdraw the delivery member 300 from the body.
S3, as shown in fig. 5, 10, 13, 19 and 26, if it is necessary to continue tightening the flexible elongate member 201, the handle housing 60 is fixed, and the operating element 532 located outside the handle housing 60 is pulled until the operating element 532 cannot be pulled continuously. Thus, the slider 521 moves axially and distally relative to the second transmission member 512 under the elastic force of the first elastic member 523, and is disconnected from the second transmission member 512. The wire rewinding device 100 is switched from the instruction state to the second state. At this time, the handle housing 60 is fixed, and the rotating portion 411 of the first rotating member 41 can be continuously rotated in the first rotating direction, so that the spool 11 is continuously rotated in the first rotating direction with respect to the outer housing 12 to wind the flexible elongated member 201.
During this procedure, the operator observes the contraction of the annulus 1 through the digital subtraction angiography device and the ultrasound device. When it is detected that the annulus 1 is contracted to an ideal state, the rotation of the rotating portion 411 of the first rotating member 41 is stopped, and at this time, since the rotation of the spool 11 in the second rotation direction is restricted by the stopper 142, the flexible elongate member 201 is fixed to the spool 11 by the frictional force, the flexible elongate member 201 is locked in the radial space 13 between the spool 11 and the outer housing 12, and the flexible elongate member 201 is maintained at a certain length on the annulus 1.
S4, as shown in fig. 6, 10, 13, 16, 26 and 29, after the flexible elongate member 201 is locked, the second rotating member 42 is pulled proximally to position the rotation stop 421 entirely outside the first aperture 4131 (i.e., the first mounting aperture 413). At this time, the wire winding device 100 is switched from the second state to the third state, and the second rotating member 42 and the first rotating member 41 can rotate relatively. The first rotating member 41 is kept stationary and the second rotating member 42 is rotated in the second rotational direction (i.e. counter-clockwise) until the threaded connection of the spool 11 in the wire takeup 10 with the connecting rod 21 is completely released, the delivery assembly 20 is withdrawn and the wire takeup 10 is left on the annulus 1 to maintain the ring contracting effect of the annuloplasty structure 200 on the annulus 1.
In the description of the present specification, the descriptions of the terms "some embodiments," "exemplary embodiments," "examples," "specific examples," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiments or examples is included in at least one embodiment or example of the present invention. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiments or examples. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
While embodiments of the present invention have been shown and described, it will be understood by those of ordinary skill in the art that: many changes, modifications, substitutions and variations may be made to the embodiments without departing from the spirit and principles of the invention, the scope of which is defined by the claims and their equivalents.
Claims (22)
1. An anti-miswinding take-up device, comprising:
the wire winder comprises an outer shell and a winding shaft which is arranged in the outer shell in a unidirectional rotation manner, wherein the winding shaft is used for winding a flexible elongated piece, and the proximal end of the flexible elongated piece is connected with the distal end of the conveying piece;
An elongated connection sleeve, a distal end of the elongated connection sleeve being detachably connected to the spool; and
the operation handle comprises a driving assembly and an anti-mistaking-roll assembly, the driving assembly is connected with the proximal end of the slender connecting sleeve piece so as to enable the slender connecting sleeve piece to synchronously move with the driving assembly, the anti-mistaking-roll assembly comprises a travel mechanism and a sliding mechanism, the travel mechanism comprises a first transmission piece and a second transmission piece which are movably connected, the first transmission piece is fixedly connected with the driving assembly, the second transmission piece is axially and movably connected with the sliding mechanism and is used for limiting the second transmission piece to rotate, and when the driving assembly rotates in a first rotating direction so as to drive the winding shaft to wind the flexible slender piece, the first transmission piece and the driving assembly synchronously rotate so that the second transmission piece moves towards the proximal end or moves towards the distal end along the axial direction relative to the first transmission piece;
the wire collecting device is provided with an indication state, and in the indication state, the second transmission piece is limited to continuously move towards the proximal end along the axial direction or continuously move towards the distal end along the axial direction so as to limit the driving assembly to continuously rotate along the first rotating direction.
2. The anti-mis-wind-up device of claim 1, wherein in the indicated state the spool has been wound up the flexible elongate member at least two times.
3. The anti-mistaking-reel wire winding device according to claim 1, wherein the slender connecting sleeve comprises a connecting rod and a connecting pipe, the connecting rod is movably arranged in the connecting pipe in a penetrating way, and the distal end of the connecting rod and the distal end of the connecting pipe are respectively detachably connected with the winding shaft;
the driving assembly comprises a first rotating piece and a second rotating piece, the second rotating piece is movably arranged in the first rotating piece in a penetrating mode, the first rotating piece is connected with the proximal end of the connecting pipe so as to enable the connecting pipe to synchronously move with the first rotating piece, and the second rotating piece is connected with the proximal end of the connecting rod so as to enable the connecting rod to synchronously move with the second rotating piece;
the first transmission piece is fixedly connected with the first rotating piece so that the first transmission piece and the first rotating piece synchronously rotate.
4. A take-up device for preventing miscolling according to claim 3, wherein the first transmission member comprises a first threaded portion, the second transmission member comprises a second threaded portion, one of the first threaded portion and the second threaded portion is a threaded rod, and the other is a threaded sleeve, and the threaded sleeve is in threaded connection with the threaded rod.
5. The anti-miscack winding device according to claim 4, wherein the sliding mechanism comprises a sliding member, the second transmission member further comprises a sliding portion provided on an outer peripheral wall of the second threaded portion, the sliding portion is movably connected to the sliding member in an axial direction, and the sliding portion and the sliding member are relatively prevented from rotating;
the thread sleeve and the thread direction of the threaded rod are positively correlated with the first rotation direction, the first rotation member rotates along the first rotation direction, so that the second transmission member moves along the axial direction towards the proximal end, and in the indication state, the second transmission member is abutted to the first transmission member or the first rotation member in the axial direction.
6. The anti-miscurl reel apparatus as in claim 5 wherein the first threaded portion is the threaded rod and the second threaded portion is the threaded sleeve, the first driving member further comprising a stop portion disposed at a proximal end of the threaded rod, the stop portion being fixedly connected to the first rotating member;
in the indicated state, the proximal end surface of the threaded sleeve abuts the distal end surface of the stopper portion.
7. The anti-miscack winding device according to claim 4, wherein the sliding mechanism comprises a sliding member, the second transmission member further comprises a sliding portion provided on an outer peripheral wall of the second threaded portion, the sliding portion is movably connected to the sliding member in an axial direction, and the sliding portion and the sliding member are relatively prevented from rotating;
The thread sleeve and the thread of the threaded rod rotate in a direction opposite to the first rotation direction, and the first rotation member rotates in the first rotation direction, so that the second transmission member moves towards the distal end in the axial direction, and in the indication state, the second transmission member abuts against the sliding member in the axial direction.
8. The anti-mis-wind wire takeup device of claim 5 further having a first state in which the second transmission member axially abuts the slider;
when the wire winding device is converted from the first state to the indication state, the first transmission piece rotates along the first rotation direction, and the second transmission piece moves towards the proximal end along the axial direction relative to the first transmission piece until abutting against the first transmission piece or the first rotation piece.
9. The take-up device for preventing miscorking as claimed in claim 7, further comprising a first state in which the second transmission member axially abuts the first transmission member or the first rotation member;
when the wire winding device is converted from the first state to the indication state, the first transmission piece rotates along the first rotation direction, and the second transmission piece moves far away along the axial direction relative to the first transmission piece until abutting against the sliding piece.
10. The take-up device for preventing miscorking according to claim 5 or 7, wherein the sliding member is provided with a sliding groove extending along the axial direction, the sliding part is a sliding boss corresponding to the sliding groove, one end of the sliding groove along the axial direction is provided with an opening, the other end of the sliding groove is provided with a stop wall, and the sliding boss is movably connected in the sliding groove along the axial direction from the opening and is opposite to the sliding groove.
11. The take-up device for preventing miscorking according to claim 5 or 7, wherein the sliding part is provided with an axially extending chute, the sliding part is provided with a sliding boss corresponding to the chute, the axially distal end of the chute is provided with an opening, and the sliding boss is axially movably connected in the chute from the opening and is relatively stopped with the chute.
12. The take-up device for preventing miscorking according to claim 8 or 9, further comprising a second state in which the slider is disconnected from the slider, the first rotating member being rotatable continuously in the first rotating direction;
when the wire winding device is converted from the indication state to the second state, the sliding piece moves far away relative to the second transmission piece along the axial direction until the sliding piece is disconnected with the sliding part.
13. The anti-miscack winding device according to claim 12, wherein the operating handle further comprises a handle housing, the slider is axially movably received in the handle housing and is rotationally locked with respect to the handle housing, the first transmission member is rotatably received in the handle housing, and the first transmission member is axially fixed with respect to the handle housing;
in the first state and the indication state, the sliding piece is axially fixed relative to the handle shell;
when the wire winding device is converted from the indication state to the second state, the sliding piece moves far away relative to the handle shell along the axial direction until the sliding piece is disconnected from the sliding part.
14. The anti-mispriming wire winding device according to claim 13, wherein the anti-mispriming assembly further comprises a limiting mechanism, lugs are arranged on two radial sides of the sliding piece, the sliding mechanism further comprises a sliding rod and a first elastic piece sleeved on the sliding rod, the sliding rod is movably arranged in the lugs in a penetrating manner along the axial direction, a limiting clamping seat is arranged in an inner cavity of the handle shell, the sliding rod is fixedly arranged in the limiting clamping seat in a penetrating manner along the axial direction, and two ends of the first elastic piece are respectively abutted against the lugs and the limiting clamping seat;
In the first state and the indication state, the limiting mechanism limits the sliding piece to move axially relative to the handle shell, so that the first elastic piece keeps elastic deformation;
when the wire winding device is converted from the indication state to the second state, the limiting mechanism releases the limitation on the axial movement of the sliding piece, and the elastic deformation of the first elastic piece is reduced, so that the sliding piece moves towards the far end along the axial direction until the sliding piece is disconnected with the sliding part.
15. The anti-mispriming wire winding device according to claim 14, wherein the sliding piece is provided with a limit groove and a sliding groove communicated with the proximal end of the limit groove, the radial dimension of the limit groove is larger than that of the sliding groove, the limit mechanism comprises a limit piece, the limit piece is movably arranged in the handle shell in a penetrating way and is axially fixed relative to the handle shell, and the limit piece comprises a main body part and a limit part arranged at one end of the main body part;
in the first state and the indication state, the limiting part is at least partially positioned in the limiting groove, and the limiting part is matched with the limiting groove to limit the sliding part to axially move relative to the handle shell;
When the wire winding device is converted from the indication state to the second state, the whole limiting part is separated from the limiting groove, and the sliding part moves towards the far end along the axial direction relative to the handle shell so that the main body part moves from the limiting groove to the sliding groove.
16. The anti-mistaking-reel wire rewinding device as claimed in claim 15, wherein the handle housing comprises a first housing and a second housing that are fastened by a fastening manner, the limiting mechanism further comprises an operation member, the limiting member further comprises a mounting portion, the mounting portion is disposed on a side of the limiting portion away from the main body portion, the first housing is provided with a through hole, and the mounting portion passes through the through hole and is connected with the operation member located outside the handle housing.
17. The anti-miscack winding device according to claim 12, wherein one of the connecting rod and the connecting tube has a distal end screwed with the spool and the other has a distal end movably sleeved with the spool and relatively locked against rotation;
and under the first state, the indication state and the second state, the first rotating piece and the second rotating piece are relatively stopped from rotating.
18. The anti-mis-wind wire takeup device of claim 17 further having a third state in which the second rotating member is rotatable relative to the first rotating member, the second rotating member being axially proximally movable relative to the first rotating member such that the wire takeup device transitions from the second state to the third state.
19. An anti-miscack winding device according to claim 1, wherein the flexible elongate member is movable through the outer housing and the spool, the spool being rotatable relative to the outer housing to wind the flexible elongate member, the flexible elongate member being locked in a radial space between the spool and the outer housing when the spool ceases rotation.
20. The anti-mistaking-reel wire winding device according to claim 1 or 19, further comprising a rotation stopping assembly, wherein the rotation stopping assembly comprises a limiting post, a rotation stopping wheel and an elastic element, the limiting post is convexly arranged on the inner wall of the far end of the outer shell, the rotation stopping wheel is movably sleeved on the limiting post and is opposite to the limiting post to stop rotating, the elastic element is abutted between the outer shell and the rotation stopping wheel, the winding shaft is rotatably sleeved on the limiting post, a plurality of first helical teeth are arranged at the near end of the rotation stopping wheel along the circumferential direction, a plurality of second helical teeth are arranged at the far end of the winding shaft along the circumferential direction, and the first helical teeth are in unidirectional engagement with the second helical teeth.
21. The take-up device for preventing miscolling according to claim 3, further comprising a sheath tube, wherein the connecting tube movably penetrates through the sheath tube, one of the sheath tube and the outer shell is provided with a claw, the other is correspondingly provided with a clamping groove, and the claw is clamped with the clamping groove.
22. A transcatheter annuloplasty system comprising the wire takeup device of any of claims 1-21 and an annuloplasty structure comprising a flexible elongate member and a plurality of anchors connected to the flexible elongate member, the plurality of anchors being for implantation in heart tissue, the wire takeup device being for controlling the wire spool to wind around the flexible elongate member to reduce a plurality of spacings between the anchors implanted in the heart tissue.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211182794.9A CN117814955A (en) | 2022-09-27 | 2022-09-27 | Wire winding device and transcatheter valve ring forming system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211182794.9A CN117814955A (en) | 2022-09-27 | 2022-09-27 | Wire winding device and transcatheter valve ring forming system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN117814955A true CN117814955A (en) | 2024-04-05 |
Family
ID=90519624
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202211182794.9A Pending CN117814955A (en) | 2022-09-27 | 2022-09-27 | Wire winding device and transcatheter valve ring forming system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN117814955A (en) |
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2022
- 2022-09-27 CN CN202211182794.9A patent/CN117814955A/en active Pending
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