CN114404116A

CN114404116A - Sheath pipe bending adjusting handle, conveying device and valve repairing system

Info

Publication number: CN114404116A
Application number: CN202210085127.2A
Authority: CN
Inventors: 张军傲; 谢晨光; 周晓军
Original assignee: Beijing Lingjian Medical Technology Co ltd
Current assignee: Beijing Lingjian Medical Technology Co ltd
Priority date: 2022-01-25
Filing date: 2022-01-25
Publication date: 2022-04-29

Abstract

The invention relates to a sheath bending adjusting handle, a conveying device and a valve repairing system, wherein the sheath bending adjusting handle is used for pulling a pulling line of a sheath so as to bend the distal end of the sheath towards a set direction; the winding wheel is sleeved on the main shaft, at least one winding groove is circumferentially and annularly arranged on the outer wheel wall of the winding wheel, at least one group of intersecting and communicated through wire holes and wire locking holes are arranged on the winding wheel in the direction perpendicular to the axial direction, the part of the pulling wire extending out of the sheath tube is wound in the winding groove, and the part of the pulling wire close to the end part extends into the through wire holes; the line pressing member is arranged in the lock line hole and compresses the traction line. The sheath bending adjusting handle provided by the invention can ensure the stability of the pulling line and avoid the pulling line from falling off or breaking in the sheath bending adjusting handle.

Description

Sheath pipe bending adjusting handle, conveying device and valve repairing system

Technical Field

The invention belongs to the technical field of medical instruments, and particularly relates to a sheath bending adjusting handle, a conveying device and a valve repairing system.

Background

Interventional therapy is a minimally invasive treatment method, and the application field of the interventional therapy is also increasing, and generally, a sheath is introduced into a patient under the guidance of medical imaging equipment, and a channel is established through the sheath to deliver implants such as drugs or instruments, for example, when the interventional therapy is applied to the field of valve repair, the distal end of the sheath can be connected with and deliver a valve clamp, a prosthetic valve, and the like.

Because human heart and vascular structure are complicated, in order to guarantee that the sheath can pass through smoothly and in order to guarantee that the implant can reach accurate setting position, the pipe section that the sheath is close to the distal end is usually required to be made into the structure that can bend alone, and set up the tractive line, utilize the distal end of tractive line to be connected with flexible part, the near-end of tractive line supplies the operator to stimulate, thereby drives the distal end of sheath and bends.

The sheath canal bending adjusting handle in the related art is used for pulling the pulling line, but because the pulling line is pulled by the far end of the sheath canal in the bending state of the far end of the sheath canal, the near end of the pulling line connected inside the handle is unstable, and the pulling line has the risk of falling or even breaking during the use process of the sheath canal bending adjusting handle, so that the operation effect is easily influenced.

Disclosure of Invention

The invention aims to at least solve the problem that a traction line can fall off or break in a sheath bending handle. The purpose is realized by the following technical scheme:

the invention provides a sheath bending adjusting handle in a first aspect, the sheath bending adjusting handle is used for pulling a pulling line of a sheath to bend the distal end of the sheath towards a set direction, the sheath bending adjusting handle comprises at least one group of driving components and at least one winding locking mechanism, and the winding locking mechanism comprises:

the main shaft is in transmission connection with the driving assembly;

the winding wheel is sleeved on the main shaft, at least one winding groove is circumferentially arranged on the outer wheel wall of the winding wheel, at least one group of intersecting and communicated through wire holes and wire locking holes are arranged on the winding wheel in the direction perpendicular to the axial direction, the part of the pulling wire extending out of the sheath tube is wound in the winding groove, and the part of the pulling wire close to the end part extends into the through wire hole;

the line pressing component is arranged in the lock line hole and presses the traction line.

According to the sheath tube bending adjusting handle provided by the embodiment of the invention, the pulling line is wound and stored on the winding wheel through the winding groove, so that on the basis of ensuring that the pulling line can be pulled, the stability of the pulling line in the pulling process is improved, and the pulling line is prevented from falling off; the through-wire hole is formed in the reel, so that the pulling wire extends into the through-wire hole after being wound, the stability of the pulling wire is further improved, and the interference of other parts on the near end of the pulling wire exposed is avoided; the part of pulling and pulling the line that will be located the through-hole through setting up lock line hole and line ball component compresses tightly fixedly to improve the reliability of being connected with the reel that pulls and act as go-between, reduced the cracked possibility of pulling and act as go-between, consequently, the sheath pipe of this embodiment proposition is transferred the curved handle and can be guaranteed the stability of pulling and act as go-between, has solved and has pulled and act as go-between and has perhaps drop or cracked problem in the handle is transferred to the sheath pipe.

In addition, the sheath bending adjusting handle provided by the embodiment of the invention can also have the following technical characteristics:

in some embodiments of the invention, the winding groove has a width greater than or equal to the outer diameter of the sheath tube in the axial direction of the reel to accommodate a portion of the tube section of the sheath tube, and the groove bottom surface of the winding groove is in contact with and/or is shaped to conform to the side wall of the sheath tube.

In some embodiments of the present invention, the outer wheel wall of the reel is further provided with a sheath-avoiding groove, the width of the sheath-avoiding groove is greater than or equal to the outer diameter of the sheath in the axial direction of the reel so as to accommodate a part of the tube section of the sheath, and the bottom surface of the sheath-avoiding groove is in contact with and/or in shape fit with the side wall of the sheath.

In some embodiments of the present invention, the winding grooves are provided in two numbers, and the two winding grooves are located on both sides of the sheath escape groove in the axial direction of the reel.

In some embodiments of the invention, the through-hole and the striker hole each penetrate the reel in a radial direction of the reel from a bottom of the winding groove.

In some embodiments of the invention, the axis of the lock wire hole is perpendicular to the axis of the through wire hole.

In some embodiments of the invention, at least one group of line pressing members is provided, the number of each group of line pressing members is two, and the two line pressing members respectively penetrate through the lock wire hole from two ends of the lock wire hole and are abutted to clamp the traction wire.

In some embodiments of the present invention, at least one group of intersecting and communicating first shaft hole and second shaft hole is radially arranged on the main shaft in a penetrating manner, the first shaft hole and the through hole are coaxially arranged, the second shaft hole and the locking wire hole are coaxially arranged, and the inner wall of the second shaft hole is provided with a thread.

In some embodiments of the invention, the line pressing member is provided as a stud, and/or the end face of the line pressing member for pressing the pulling line is provided with a concave-convex stripe.

In some embodiments of the invention, the reel is further provided with a baffle which is positioned at the notch of the winding groove to block the pulling wire.

In some embodiments of the invention, the driving assembly comprises a knob, a worm and a worm wheel which are connected in sequence, the worm wheel is connected with the main shaft, the sheath bending adjusting handle further comprises a shell, and a sheath fixing assembly and a limiting mechanism which are arranged in the shell, the sheath fixing assembly is used for fixing a sheath, and the limiting mechanism is used for limiting the reel to rotate within a set range and/or towards a set direction.

A second aspect of the present invention provides a delivery device, which includes at least one sheath and at least one sheath bending adjusting handle according to any of the above embodiments, wherein a portion of the sheath near the proximal end is inserted into the sheath bending adjusting handle.

The conveying device provided by the invention has the same advantages as the sheath bending adjusting handle, and the details are not repeated.

A third aspect of the invention provides a valve repair system comprising a valve holder and a delivery device according to the above embodiments for delivering the valve holder, the distal end of the sheath being detachably connected to the valve holder.

The valve repair system provided by the invention has the same advantages as the sheath bending adjusting handle and the conveying device, and the details are not repeated.

Drawings

In the following, the drawings of the embodiments will be briefly described, and those skilled in the art can also derive other drawings from them without inventive effort.

Fig. 1 is a schematic structural view of a sheath bending adjustment handle according to a first embodiment of the present invention;

fig. 2 is a partial structural schematic view of a sheath bending adjustment handle according to a first embodiment of the present invention;

fig. 3 is an exploded view of a sheath bending adjustment handle according to a first embodiment of the present invention;

fig. 4 is a partial structural schematic view of a sheath bending adjustment handle according to a first embodiment of the present invention, including a top cover;

fig. 5 is a schematic structural view of a sheath fixing assembly in a sheath bending adjustment handle according to an embodiment of the present invention;

fig. 6 is a cross-sectional view of the sheath retaining assembly of fig. 5;

FIG. 7 is a schematic structural view of a sheath fixing assembly in a sheath bending adjustment handle according to an embodiment of the present invention;

fig. 8 is a cross-sectional view of the sheath retaining assembly of fig. 7;

FIG. 9 is a schematic structural diagram of a winding locking mechanism in a sheath bending adjustment handle according to an embodiment of the present invention;

fig. 10 is another schematic structural diagram of a winding locking mechanism in a sheath bending adjustment handle according to a first embodiment of the present invention;

FIG. 11 is a front elevational view of the reel and spindle of the winding lock mechanism of FIG. 9;

FIG. 12 is a cross-sectional view taken along the line A-A in FIG. 11;

FIG. 13 is another cross-sectional view taken along line A-A of FIG. 11;

FIG. 14 is a front view of the wire wrap locking mechanism and pull wire of FIG. 9;

FIG. 15 is a cross-sectional view taken in the direction B-B of FIG. 14;

fig. 16 is a partial structural schematic view of a sheath bending adjustment handle according to a second embodiment of the present invention;

fig. 17 is a schematic structural view of a sheath bending adjustment handle according to a third embodiment of the present invention;

fig. 18 is a partial structural view of a sheath bending adjustment handle according to a third embodiment of the present invention;

fig. 19 is a partial structural view of a sheath bending adjustment handle according to a third embodiment of the present invention, including a top cover;

fig. 20 is a partial structural view of a sheath bending adjustment handle according to a third embodiment of the present invention;

FIG. 21 is a schematic view of a conveyor apparatus according to an embodiment of the invention;

fig. 22 is a schematic view of a valve repair system according to an embodiment of the invention.

The reference symbols in the drawings denote the following:

1000. a conveying device; 2000. a sheath tube; 3000. a pulling wire; 3001. a first pull line; 3002. a second pull line; 3003. a third pull line; 4000. a valve clamp; 5000. a valve repair system;

100. a sheath bending adjusting handle;

10. a housing; 11. a top cover; 12. a bottom case; 101. a sheath channel; 102. a mounting seat; 1021. a first groove; 1022. a second groove;

20. a winding locking mechanism; 201. a first winding locking mechanism; 202. a second winding locking mechanism; 21. a main shaft; 2101. a first main shaft; 2102. a second main shaft; 211. a first shaft hole; 212. a second shaft hole; 22. a reel; 2201. a first reel; 2202. a second reel; 221. a winding slot; 2211. a first winding slot; 2212. a second winding slot; 2213. a third winding slot; 222. a sheath avoiding groove; 223. a through hole; 224. a lock wire hole; 23. a wire pressing member;

30. a drive assembly; 301. a first drive assembly; 302. a second drive assembly; 31. a knob; 32. a worm; 33. a worm gear;

40. a sheath tube fixing assembly; 41. pressing a ring; 42. a fixed flange; 421. a central bore; 43. a contraction ring; 431. a support ring; 432. a movable plate; 44. an abutting member;

50. a bearing; 60. a pointer; 70. a limiting mechanism; 701. a first limit mechanism; 702. a second limiting mechanism; 71. a rotating member; 711. a first rotating lever; 712. a second rotating lever; 72. a limiting plate; 80. a wire blocking rod; 90. a gear set.

Detailed Description

As described in the background art, in the process of controlling the bending of the sheath, the pulling wire is easy to fall off or break in the handle due to the reverse acting force of the sheath when the sheath is bent, the operation effect is affected and even the safety risk exists, to this end, the invention provides a sheath bending adjusting handle, a main shaft and a winding wheel are arranged in the handle, a pulling wire extending from the sheath is wound in a winding groove of the winding wheel, the stability of the pulling wire in the pulling process is improved, the possibility of falling off is reduced, meanwhile, the reel is provided with a through hole for placing the proximal part of the pulling wire, and a lock wire hole and a wire pressing component are arranged for fixing the pulling wire part positioned in the through hole, therefore, the reliability of connection of the traction line and the reel is improved, and the possibility of fracture is reduced.

The terminology used herein, in connection with the appended drawings of embodiments of the invention, is for the purpose of describing particular example embodiments only and is not intended to be limiting of the invention, e.g., the terms "comprising", "including", "having", and the like, do not denote the presence of the stated features nor do they exclude the presence of other features; the terms "first", "second", and the like do not imply a sequence or order; the terms "inner", "outer", "above", "below" are used merely for convenience in describing the relationship of one feature to another feature shown in the drawings and do not indicate that they must have a particular orientation. In the field of interventional medical devices, the proximal end refers to the end closer to the operator, and the distal end refers to the end farther from the operator; the axial direction refers to a direction parallel to a line connecting the center of the distal end and the center of the proximal end of the medical device in a natural state, and in the description of the present invention, the above definition is merely for convenience of description and should not be construed as limiting the present invention.

Referring to fig. 1 to 3, with reference to fig. 9 to 15, an embodiment of the present invention provides a sheath bending adjusting handle 100, the sheath bending adjusting handle 100 is used for pulling a pulling wire 3000 of a sheath 2000 to bend a distal end of the sheath 2000 towards a set direction, the sheath bending adjusting handle 100 of the embodiment includes at least one set of driving assembly 30 and at least one winding locking mechanism 20, the winding locking mechanism 20 includes a main shaft 21, a winding wheel 22 and a line pressing member 23, the main shaft 21 is in transmission connection with the driving assembly 30; the winding wheel 22 is sleeved on the main shaft 21, at least one winding groove 221 is circumferentially and annularly arranged on the outer wheel wall of the winding wheel 22, at least one group of intersecting and communicated through hole 223 and wire locking hole 224 are arranged on the winding wheel 22 in the direction perpendicular to the axial direction, the part of the pulling wire 3000 extending out of the sheath pipe is wound in the winding groove 221, and the part of the wire segment of the pulling wire 3000 close to the end part extends into the through hole 223; the crimping member 23 is disposed in the lockwire aperture 224 and compresses the puller wire 3000.

The sheath bending adjusting handle 100 provided in this embodiment may be used in the delivery device 1000, and the sheath bending adjusting handle 100 is used in cooperation with one or more sheath tubes 2000 to bend the distal end of the sheath tube 2000 towards a set direction according to a requirement, and as can be understood, the distal end of the sheath tube 2000 has a bendable tube section, a pulling line 3000 connected with the bendable tube section is provided in the sheath tube 2000, the distal end of the pulling line 3000 is connected with the bendable tube section, and the proximal end of the pulling line 3000 is pulled by an operator. The drive assembly 30 in this embodiment drives the wire locking mechanism 20 to rotate, thereby pulling the pull wire 3000.

In the embodiment, the winding groove 221 is arranged to wind and store the pulling wire 3000 on the reel 22, so that the stability of the pulling wire 3000 in the pulling process is improved and the pulling wire 3000 is prevented from falling off on the basis of ensuring that the pulling wire 3000 can be pulled; the through hole 223 is formed in the reel 22, so that the pulling wire 3000 extends into the through hole 223 after being wound, the stability of the pulling wire 3000 is further improved, and the near end of the pulling wire 3000 is prevented from being exposed and interfered by other parts; will be located the 3000 parts of the line that pulls who leads to line hole 223 through setting up lock line hole 224 and line ball component 23 and compress tightly fixedly to improved the reliability that the 3000 of pulling the line is connected with reel 22, compare in sticky fixed, such mode has reduced the cracked possibility of 3000 of pulling the line, and it is thus visible that the sheath pipe that this embodiment provided is transferred curved handle 100 and can be guaranteed the stability of pulling the line 3000, avoids pulling the line 3000 and transfers curved handle 100 in the sheath pipe and drop or fracture.

On the basis of the above embodiments, the sheath bending adjusting handle 100 proposed in this embodiment includes a housing 10, at least one winding locking mechanism 20, and at least one set of driving components 30, wherein a sheath channel 101 is provided on the housing 10 for the sheath 2000 to partially penetrate through the housing 10; the winding locking mechanism 20 is arranged in the shell 10, each group of driving assemblies 30 is matched with one winding locking mechanism 20, each driving assembly 30 comprises a knob 31, a worm 32 and a worm wheel 33 which are sequentially connected, the worm wheels 33 are connected with the main shaft 21 to drive the reels 22 to rotate, in the using process, the knobs 31 can drive the worms 32 to rotate, and the worm wheels 33 in transmission connection with the worms 32 can drive the reels 22 to rotate, so that the pulling wire 3000 is pulled. The embodiment utilizes the drag function of the reel 22 to the drag line 3000, combine the self-locking function of the worm gear mechanism, make the operator only need rotate a knob 31 to pull the drag line 3000, can stop rotating at any time in this process, need not independent locking and pull the line 3000 and can guarantee that the drag line 3000 can not receive sheath 2000 pulling force and withdraw, that is to say, the operator can only control the bending degree of sheath 2000 through the turned angle of knob 31, and can make the sheath 2000 maintain a certain bending state when stopping rotating knob 31, therefore, the sheath bending adjusting handle 100 that the embodiment provided is simple and compact in structure, small in overall volume, light, the operator's use experience has been improved, and easy and simple to handle, the stability that pulls the line 3000 in the use is good, be favorable to improving the operation effect.

With reference to fig. 2, fig. 3 and fig. 4, an accommodating space is formed inside the casing 10, and a part of the tube section of the sheath tube 2000, the winding locking mechanism 20 and the worm gear 33 and the worm 32 are disposed inside the casing 10, in this embodiment, the casing 10 may include a top cover 11 and a bottom cover 12, the top cover 11 and the bottom cover 12 are fastened and connected in a clamping manner, a welding manner, or a fastening manner such as a bolt, a screw, or the like, and the top cover 11 and the bottom cover 12 are connected by the fastening manner, which not only facilitates manufacturing and assembling of the casing 10, but also facilitates subsequent maintenance or replacement of components inside the casing 10. Further, the top cover 11 and the bottom cover 12 may be formed by three-dimensional printing or injection molding, and the outer walls of the top cover 11 and the bottom cover 12 may be further provided with a recess for an operator to hold during use, and the shape and the forming manner of the housing 10 are not particularly limited in this embodiment.

Further, please continue to refer to fig. 1 and fig. 4, in the present embodiment, the casing 10 is provided with the sheath channel 101 for the sheath 2000 to penetrate through, it can be understood that a pipe section of the sheath 2000 near the proximal end needs to be located in the sheath bending handle 100, two sheath channels 101 are provided, the two sheath channels 101 are respectively disposed on two opposite side walls of the casing 10, the sheath 2000 extends into the casing 10 from one sheath channel 101, and extends from the other sheath channel 101, so that the stability of the proximal portion of the sheath 2000 can be improved, and the sheath 2000 is prevented from excessively shaking. The sheath channel 101 in this embodiment may be configured as a circular through hole that matches the sheath 2000, or may be configured as a through hole of other shapes.

Further, referring to fig. 2 and 3, in some embodiments of the present invention, the sheath bending adjustment handle 100 further includes a sheath fixing assembly 40, the sheath fixing assembly 40 is connected to the housing 10 and can hold the sheath 2000 tightly to prevent the sheath 2000 from moving or rotating relative to the housing 10, so as to further fix the sheath 2000 and improve stability of the sheath 2000, the number of the sheath fixing assemblies 40 may be provided with one group or two groups, for example, according to the above embodiment, the number of the sheath passages 101 is two, and the sheath fixing assembly 40 may be provided with one group and arranged close to one of the sheath passages 101, so as to improve stability of the sheath 2000.

In an alternative embodiment, please refer to fig. 2 and fig. 3 in combination with fig. 5 and fig. 6, each group of sheath fixing assemblies 40 includes two opposite pressing rings 41, and the two pressing rings 41 are fastened and connected to and clasp the sheath 2000, so that the sheath 2000 cannot move axially and rotate, which is beneficial to the stability of the sheath 2000 and the pulling wire 3000 extending from the sheath 2000. Illustratively, the two pressing rings 41 have the same structure, as shown in fig. 6, the cross-sectional shape of the portion where the two pressing rings 41 clasp the sheath 2000 is arc-shaped or semicircular, the two sides of the pressing ring 41 extend to form connecting plates, when the two pressing rings 41 are fastened and connected, the connecting plates on the same side of the two pressing rings 41 are aligned and abutted, and on this basis, the two connecting plates may be connected by welding, or a fastener is used to penetrate through the two connecting plates, so that the two pressing rings 41 are connected and clasp the sheath 2000.

In addition to the above embodiments, referring to fig. 4, the housing 10 may further be provided with an installation seat 102 for installing the sheath fixing assembly 40, the installation seat 102 may be disposed inside the housing 10 or outside the housing 10, and the installation seat 102 is formed on the housing 10 by integral molding. When the housing 10 includes the top cover 11 and the bottom cover 12, the mounting seat 102 may be disposed on the top cover 11 or the bottom cover 12, or the mounting seats 102 may be disposed on both the top cover 11 and the bottom cover 12. Illustratively, a first mounting seat is disposed at a position of the top cover 11 close to the bottom shell 12, a second mounting seat is disposed at a position of the bottom shell 12 close to the top cover 11, and a side wall of the top cover 11 close to the first mounting seat and a side wall of the bottom shell 12 close to the second mounting seat are respectively provided with a recess, and referring to fig. 3 in combination, when the top cover 11 is fastened to the bottom shell 12, the two recesses enclose to form the sheath channel 101.

In addition to the above embodiments, referring to fig. 4, 5 and 6, when the sheath fixing assembly 40 includes two pressing rings 41, the two pressing rings 41 are connected by a fastener, which may be a screw or a bolt. On this basis, be provided with respectively on first mount pad and the second mount pad with clamping ring 41 assorted first recess 1021, two first recesses 1021 set up relatively, the shape of first recess 1021 and the shape looks adaptation of clamping ring 41, every clamping ring 41 is at least partly to inlay and establish in first recess 1021. In the assembling process, can be earlier connected the back with sheath pipe 2000 with two clamping rings 41, place on first recess 1021 of first mount pad or second mount pad, after top cap 11 is connected with drain pan 12 lock, two first recess 1021 make-up form the accommodation space who holds two clamping rings 41, make the fixed subassembly 40 of partial pipeline section and sheath pipe of sheath pipe 2000 fix in casing 10, the assembly is convenient for to such mode of setting, and the stability of the fixed subassembly 40 of sheath pipe and sheath pipe 2000 has further been improved.

Further, please continue to refer to fig. 4, a second groove 1022 is further disposed on the mounting seat 102, the second groove 1022 is used for accommodating an end portion of the fastening member, for example, the second groove 1022 may be disposed on the first mounting seat and may also be disposed on the second mounting seat, or the first mounting seat and the second mounting seat are respectively disposed with the second groove 1022, and the two second grooves 1022 are oppositely disposed and respectively matched with two ends of the fastening member, so as to not only accommodate the end portion of the fastening member, so that the sheath fixing assembly 40 is connected to the housing 10, but also prevent the sheath fixing assembly 40 from swaying on the mounting seat 102, and therefore, the second groove 1022 further improves the stability of the sheath fixing assembly 40, and further improves the stability of the sheath 2000. In addition, the sheath fixing assembly 40 and the housing 10 may be further welded to improve connection reliability, for example, the pressing ring 41 is welded to the first groove 1021, or the fastening member is welded to the second groove 1022, which is not particularly limited in this embodiment.

In another alternative embodiment, referring to fig. 7 and 8, each sheath fixing assembly 40 includes a fixing flange 42 and a retractable member 43, in this embodiment, the fixing flange 42 is at least partially installed in the sheath channel 101, and is matched with the sheath channel 101, for example, it may be configured as an interference fit, and referring to fig. 20, the shape of the sheath channel 101 may be matched with the outer contour shape of the fixing flange 42, so as to facilitate installation and improve connection stability. As shown in fig. 8, the fixing flange 42 has a central hole 421, the sheath 2000 passes through the central hole 421, the retractable member 43 is connected in the central hole 421 and is sleeved on the sheath 2000, and the retractable member 43 clasps the sheath 2000 when in a retracted state, thereby preventing the sheath 2000 from moving and rotating in the axial direction.

Illustratively, in the present embodiment, the retractable member 43 includes a support ring 431 and a plurality of movable pieces 432 connected to the support ring 431, and the movable pieces 432 extend in the axial direction and can rotate within a set range around the connection with the support ring 431, and it can be understood that the sheath 2000 can be clasped when the plurality of movable pieces 432 are folded in the axial direction of the support ring 431. On this basis, in this embodiment, the central hole 421 of the fixing flange 42 may be set to a shape that the retractable member 43 is squeezed to be closed, or a component for squeezing the retractable member 43 to be closed may be provided in the central hole 421, and in the assembling process, the retractable member 43 may be connected to the sheath 2000 and then inserted into the central hole 421, so that the retractable member 43 is squeezed to be contracted, thereby fixing the sheath 2000.

In an alternative embodiment, the central hole 421 includes a tapered hole section, the retractable member 43 is movably disposed in the tapered hole section of the central hole 421, the supporting ring 431 of the retractable member 43 is close to a large end of the tapered hole section, and an end of the movable plate 432 far from the supporting ring 431 is close to a small end of the tapered hole section. Thus, when the retractable member 43 moves toward the small end, the movable piece 432 is pressed by the inner wall of the tapered hole section to retract inward, thereby clasping the sheath 2000, and making the sheath 2000 unable to move in the axial direction and rotate.

In addition to the above embodiment, please refer to fig. 8, the sheath fixing assembly 40 further includes an abutting member 44, the abutting member 44 is also disposed in the central hole 421, and the abutting member 44 has an axial through hole, and in this case, the sheath 2000 penetrating the central hole 421 is partially disposed in the retractable member 43 and partially disposed in the abutting member 44. On this basis, the abutment 44 can press the retractable member 43 in the axial direction, causing the retractable member 43 to move towards the small end. Illustratively, the abutment 44 may be provided in a screw shape, the outer side wall of the abutment 44 may be provided with an external thread, the inner wall of the central hole 421 is correspondingly provided with an internal thread, and at least a part of the external thread is located on the side of the large end of the tapered hole section, thereby, during the assembly process, the abutment 44 is screwed in the central hole 421, when the abutment 44 moves to the set position in the central hole 421, the end of the abutment 44 abuts against the supporting ring 431 of the retractable member 43 in the axial direction, and further, when the movement continues, a pushing force is applied to the retractable member 43, so that the retractable member 43 moves towards the small end of the tapered hole section, and the movable piece 432 is squeezed to be gathered, even if the retractable member 43 contracts to hold the sheath 2000 tightly. To sum up, this embodiment prevents the relative casing 10 motion of sheath 2000 through the mode that mounting flange 42, collapsible member 43 and butt 44 combined together, has improved sheath 2000's stability, in the use of sheath bending handle 100, has guaranteed the stability of tractive line 3000.

Continuing to refer to fig. 1, 2 and 3, the driving assembly 30 illustratively includes a knob 31, a worm 32 and a worm wheel 33 connected in sequence, the knob 31 is located outside the housing 10, the worm 32 and the worm wheel 33 are located inside the housing 10, a connecting boss is provided on a side of the knob 31 facing the housing 10, a connecting hole is provided on the connecting boss, a central shaft portion of the worm 32 extends out of the housing 10 and extends into the connecting hole to connect with the knob 31, and the central shaft and the connecting hole may be provided with an interference fit or may be connected by a fastener. In an alternative embodiment, the connection boss is provided with a threaded hole in the radial direction, whereby a screw or bolt can be used to extend from the threaded hole to abut or snap into engagement with the central axis of the worm 32, thereby improving the reliability of the connection between the worm 32 and the knob 31.

In addition to the above embodiments, as shown in fig. 2, the worm wheel 33 is rotatably disposed in the housing 10, two ends of the worm 32 are respectively rotatably connected to the side walls of the housing 10, the helical tooth portion of the worm 32 is engaged with the worm wheel 33, the worm wheel 33 is driven by the worm 32 to rotate, and on this basis, the worm wheel 33 is sleeved on the main shaft 21 of the winding locking mechanism 20 to drive the main shaft 21 and the reel 22 to rotate, so that the main shaft 21, the reel 22 and the worm wheel 33 are coaxially disposed, the structure is compact, the installation space is saved, the overall volume of the sheath bending handle 100 is further reduced, and the worm wheel 33 and the worm 32 are driven to have a self-locking function, and the stability of the winding locking mechanism 20 and the pulling wire 3000 is ensured.

Further, in some embodiments of the present invention, the sheath bending adjustment handle 100 further includes a plurality of bearings 50, for example, please refer to fig. 2, the main shaft 21 and the worm 32 of the winding locking mechanism 20 are respectively disposed in the housing 10 along a direction perpendicular to the axis of the sheath 2000, two ends of each main shaft 21 are respectively connected to the bearings 50, two ends of each worm 32 are also respectively connected to the bearings 50, and accordingly, the housing 10 is provided with a plurality of mounting holes for mounting the bearings 50, in this embodiment, by disposing the bearings 50, the stability of the main shaft 21 and the worm 32 is improved, the resistance when the main shaft 21 and the worm 32 rotate is reduced, and further, the use experience and the bending adjustment efficiency of the sheath bending adjustment handle 100 are improved.

In the use process of the sheath bending adjusting handle 100, an operator rotates the knob 31 to drive the worm 32 to rotate, the worm 32 drives the worm wheel 33 meshed with the worm to rotate, the worm wheel 33 drives the main shaft 21 of the winding locking mechanism 20 and the winding wheel 22 coaxially arranged with the worm wheel 33 to rotate, and then the pulling wire 3000 connected to the winding wheel 22 is pulled to bend the distal end of the sheath 2000. The reel 22 of the present embodiment is capable of receiving and connecting the pulling wire 3000, and it is understood that the structure of the winding locking mechanism 20 is different depending on the number of the pulling wires 3000 that are engaged.

Illustratively, in some embodiments of the present invention, with continuing reference to fig. 2 and 3, the winding locking mechanism 20 includes a main shaft 21, a winding reel 22 and a line pressing member 23, the main shaft 21 is drivingly connected to the driving assembly 30 and can be driven by the driving assembly 30 to rotate, the winding reel 22 is sleeved on the main shaft 21 to rotate with the main shaft 21, at least one winding groove 221 is circumferentially formed on an outer casing wall of the winding reel 22, the winding reel 22 is provided with at least one set of through hole 223 and line locking hole 224 intersecting and communicating with each other in a direction perpendicular to an axial direction, a portion of the pulling wire 3000 extending from the sheath tube 2000 is wound around the winding groove 221, and a portion of a line segment of the pulling wire 3000 near an end portion extends into the through hole 223; the crimping member 23 is disposed in the lockwire aperture 224 and compresses the puller wire 3000.

In addition to the above embodiments, with continued reference to fig. 2 and 3, the reel 22 may be provided with one winding groove 221, or may be provided with a plurality of winding grooves 221, the number of the winding grooves 221 being set according to the number of the pull-cord 3000, and when the reel 22 is provided with one winding groove 221, the reel 22 is used for winding one pull-cord 3000; when the two winding grooves 221 are provided on the reel 22, the reel 22 is used for winding two pull wires 3000, and the two pull wires 3000 are wound in the two winding grooves 221 in opposite directions, respectively.

Further, the width of the winding slot 221 in the axial direction of the reel 22 may be set according to actual needs, and in one possible embodiment, the width of the winding slot 221 is greater than or equal to the outer diameter of the sheath 2000, whereby, as shown in fig. 2, the sheath 2000 threaded into the housing 10 may pass through the winding slot 221 in a direction parallel to the tangential direction of the reel 22, that is, the sheath 2000 is partially located in the winding slot 221, and further, the outer wall of the sheath 2000 may be in contact with or maintain a small distance from the slot bottom surface of the winding slot 221, that is, the generatrix of the sheath 2000 is tangent or approximately tangent to the slot bottom surface; further, the bottom surface of the winding groove 221 may be configured as an arc surface matching the outer wall of the sheath tube 2000 to form a larger accommodating space, so that the sheath tube 2000 is in contact with the bottom surface of the groove or maintains a smaller distance. This arrangement makes it possible to prevent the pull-wire 3000 extending from the sheath 2000 from scratching the outer wall of the sheath 2000 when the pull-wire 3000 is pulled by keeping the pull-wire 3000 as tangent or nearly tangent to the reel 22 as possible when the pull-wire is wound around the reel 22.

In some embodiments of the present invention, the reel 22 may further include one or more baffles located at the notch of the winding groove 221 for blocking the pull-cord 3000, and for example, since the winding groove 221 is a recessed portion provided on the outer casing wall of the reel 22, the portions located on both sides of the winding groove 221 in the axial direction of the reel 22 may be raised relative to the winding groove 221, and on the basis of this, the baffles may be integrally formed on the raised portions located on both sides of the winding groove 221, and extend in the direction of the winding groove 221 so as to shield a portion of the winding groove 221, and when the reel 22 rotates in the direction opposite to the winding direction of the pull-cord 3000, the pull-cord 3000 located in the winding groove 221 may be loosened, and the baffles may be provided in this embodiment to reduce or prevent the possibility of the pull-cord 3000 falling off after loosening.

On the basis of the above embodiment, the wire pressing member 23 extends into the wire locking hole 224 to press the pulling wire 3000, and one or more wire pressing members 23 may be provided, for example, the pressing manner may be that the end of one wire pressing member 23 abuts against the inner wall of the hole, and the pulling wire 3000 is pressed between the wire pressing member 23 and the inner wall of the hole, or the pressing manner may be that the end of two wire pressing members 23 abuts against and the pulling wire 3000 is pressed between the two wire pressing members; the through-hole 223 may be provided as a blind hole or a through-hole, the lock-hole 224 may also be provided as a blind hole or a through-hole, the through-hole 223 and the lock-hole 224 may be provided in the radial direction of the reel 22, or in the direction parallel to the tangent of the reel 22, and in addition, the through-hole 223 and the lock-hole 224 are provided extending inward from the outer wheel wall of the reel 22, and exemplarily, the through-hole 223 and the lock-hole 224 may be provided inward from the spool slot 221, or may be provided inward from other portions of the reel 22. The present embodiment does not limit the specific structure and position of the through hole 223 and the lock wire hole 224, and it is sufficient to ensure that the through hole 223 is communicated with the lock wire hole 224, and the wire pressing member 23 can press the pulling wire 3000.

In some embodiments of the invention, referring to fig. 9 to 13, the through-hole 223 and the lock-wire hole 224 extend through the reel 22 from the bottom of the winding slot 221 in the radial direction of the reel 22, i.e., the openings of the through-hole 223 and the lock-wire hole 224 are located in the winding slot 221, the through-hole 223 and the lock-wire hole 224 are arranged in the radial direction, the axis of the through-hole 223 intersects with the axis of the lock-wire hole 224, and an acute angle or a right angle may be formed therebetween, and in an alternative embodiment, as shown in fig. 12, the axis of the through-hole 223 is perpendicular to the axis of the lock-wire hole 224, it being understood that, since the reel 22 has a central hole 421 for engaging with the spindle 21, the through-hole 223 and the lock-wire hole 224 provided on the reel 22 each include two hole segments separated by the central hole 421, and for ease of understanding, the two hole segments of the through-hole 223 will be collectively described as the through-wire hole 223, the two bore segments of the lockwire bore 224 are collectively described as lockwire bore 224.

On the basis of the above embodiment, please continue to refer to fig. 12 and 13, at least one set of intersecting and communicating first shaft hole 211 and second shaft hole 212 is radially arranged on the main shaft 21, in this embodiment, the first shaft hole 211 and the through hole 223 are coaxially arranged and located between two hole segments of the through hole 223, and the second shaft hole 212 and the lock line hole 224 are coaxially arranged and located between two hole segments of the lock line hole 224. On the basis that the axis of the through hole 223 is perpendicular to the axis of the locking wire hole 224, the axis of the first shaft hole 211 intersects and is perpendicular to the axis of the second shaft hole 212, and on the basis, the wire pressing member 23 for pressing the pulling wire 3000 is respectively matched with the locking wire hole 224 and the second shaft hole 212.

In some embodiments of the present invention, referring to fig. 9 and 10 in combination with fig. 14 and 15, the number of the pressing members 23 is two, and the number of the pressing members 23 and the number of the first shaft holes 211 and the second shaft holes 212 are set according to the number of the through holes 223 or the lock holes 224 on the reel 22, and when the reel 22 is engaged with one pull-cord 3000 and the lock holes 224 are set, one set of the first shaft holes 211 and the second shaft holes 212 is set, and one set of the pressing members 23 is set; when the reel 22 is matched with two pull wires 3000, and the two wire locking holes 224 are provided, the first shaft hole 211 and the second shaft hole 212 are correspondingly provided with two sets, and the two wire pressing members 23 are correspondingly provided with two sets, according to the above embodiment, the two wire pressing members 23 in each set are respectively penetrated through the wire locking holes 224 from the two ends of the wire locking holes 224 and are abutted to the second shaft holes 212 to clamp the pull wires 3000.

In an alternative embodiment, the wire pressing member 23 is a stud, and accordingly, the wire locking hole 224 may be a through hole, and the inner wall of the second shaft hole 212 may be provided with a thread, so that the stud self-locking hole 224 is inserted into and then matched with the thread of the second shaft hole 212 until the end surfaces of the two opposite studs abut against each other and clamp the pulling wire 3000. Further, the end face of the line pressing member 23 used for compressing the pulling line 3000 is provided with concave-convex stripes, the line pressing member 23 is set to be a stud as an example, the concave-convex stripes can be integrally formed on the end face of the stud, and when the end faces of the two studs are abutted, the concave-convex stripes are matched with each other to improve friction force, so that the compressing effect on the pulling line 3000 is further improved.

In the assembly process of the winding locking mechanism 20 in this embodiment, the proximal end portion of the pulling wire 3000 may be placed in the through hole 223 and the first shaft hole 211, and then the two wire pressing members 23 are respectively inserted inwards from the two outer side openings of the wire locking hole 224 until the ends of the two wire pressing members 23 abut against each other, and the portion of the pulling wire 3000 located at the communication position between the first shaft hole 211 and the second shaft hole 212 is pressed. When the reel 22 is rotated in the winding direction of the pulling wire 3000, the pulling wire 3000 can be pulled tight, and the distal end of the sheath 2000 can be bent in the set direction. In summary, the arrangement of the through-hole 223, the thread-locking hole 224 and the thread-pressing member 23 in the present embodiment improves the connection stability between the pulling wire 3000 and the reel 22, and is more reliable than the method of merely winding or using adhesive to connect, so as to avoid the interference between the proximal end of the pulling wire 3000 and other components such as the worm wheel 33 or the worm 32, and reduce the risk of disorder of the pulling wire 3000 inside the handle.

Further, since the pulling wire 3000 is pulled by the rotation of the reel 22 to further drive the distal end of the sheath 2000 to bend, the bending degree of the sheath 2000 is related to the rotation angle of the reel 22, in some embodiments of the present invention, as shown in fig. 1, the sheath bending adjusting handle 100 further includes a pointer 60, the pointer 60 may be disposed coaxially with the reel 22, and a corresponding scale mark may be further disposed, so that the pointer 60 can be used to indicate the rotation angle of the reel 22, and an operator can judge the bending degree of the sheath 2000 according to the angle indicated by the pointer 60, which is beneficial for the operator to grasp the surgical condition. It is understood that the number of the pointers 60 is equal to the number of the winding lock mechanisms 20 in the sheath bending handle 100, i.e., one pointer 60 is used to indicate the rotation angle of one reel 22.

In addition to the above embodiment, since the worm wheel 33, the spindle 21, and the reel 22 rotate coaxially, the worm wheel 33, the spindle 21, and the reel 22 rotate at the same angle, and the pointer 60 can be connected to any one of the worm wheel 33, the spindle 21, and the reel 22. In an alternative embodiment, as shown in fig. 1, each pointer 60 is connected to an end of one main shaft 21, for example, the end of the main shaft 21 is connected to the housing 10 through a bearing 50, an end surface of the main shaft 21 may be exposed outside the housing 10, and the pointer 60 connected to the main shaft 21 is also located outside the housing 10, thereby being more convenient for an operator to observe. In this embodiment, the pointer 60 is perpendicular to the axis of the main shaft 21, a connecting portion is disposed on one side of the pointer 60 facing the main shaft 21, the connecting portion and the main shaft 21 can be welded, clamped or connected through a fastener, on the basis, scale marks are marked on the outer surface of the housing 10, and the pointer 60 is parallel to the surface marked with the scale marks, so that the indicating accuracy is improved, and the reading by an operator is facilitated. In addition, a transparent cover can be connected outside the housing 10, and the transparent cover is buckled outside the pointer 60 and the scale marks, so as to play a role in dust prevention and protection for the pointer 60 and the scale marks.

In some embodiments of the present invention, referring to fig. 2, 3 and 4, the sheath bending control handle 100 further includes limiting mechanisms 70, in which the limiting mechanisms 70 may be mounted in the housing 10 for limiting at least one of the rotation range and the rotation direction of the reel 22, and the number of the limiting mechanisms 70 is the same as the number of the winding locking mechanisms 20. Illustratively, when there is one winding locking mechanism 20, there is one limiting mechanism 70; when two winding locking mechanisms 20 are provided, two limiting mechanisms 70 are provided. The limiting mechanism 70 in this embodiment can prevent the reel 22 from rotating in the direction that causes the pulling line 3000 to be loose, or can control the rotation range, thereby preventing the reel 22 from excessively rotating to tear the pulling line 3000 and preventing the pulling line 3000 from breaking.

Further, each of the limiting mechanisms 70 includes a rotating member 71 and at least one limiting plate 72, the limiting plate 72 may be disposed on the housing 10, for example, may be integrally formed on the housing 10, and the shape of the limiting plate 72 may be a rectangular plate shape, a fan-shaped plate shape, or an irregular shape, which is not particularly limited in this embodiment. The rotating member 71 is connected to the winding locking mechanism 20 and can rotate with the winding locking mechanism 20, for example, can be connected to the main shaft 21 and can also be connected to the reel 22. in an alternative embodiment, as shown in fig. 2, the rotating member 71 is connected to the main shaft 21, and the two can be connected by integral molding, welding, plugging or by fasteners; the rotating member 71 may be provided as a rotating plate or a rotating rod, and the shape of the rotating rod may be provided as a cylindrical rod, a Z-shaped rod, an L-shaped rod, or an irregular shape, which is not particularly limited in this embodiment. Taking the example where the rotating member 71 is shaped as a cylindrical rod, the axis of the rotating member 71 is perpendicular to the axis of the main shaft 21, and the end of the rotating member 71 is used to abut against the stopper plate 72 to prevent rotation, thereby restricting rotation of the main shaft 21 and the reel 22.

On the basis of the above embodiment, the number of the limit plates 72 is set according to the factors to be limited by the limit mechanism 70, and taking the number of the winding locking mechanism 20 and the number of the limit mechanism 70 as an example, the limit mechanism 70 may include a rotating member 71 and two limit plates 72, and both ends of the rotating member 71 respectively abut against the side surfaces of the two limit plates 72 in the initial state, so that the main shaft 21 and the reel 22 can only rotate in the direction opposite to the abutting direction, thereby achieving the purpose of limiting the rotating direction; when the rotating member 71 rotates to the set position, it abuts against the other side surface of the stopper plate 72, and the main shaft 21 and the reel 22 are restricted from continuing to rotate, thereby restricting the range of rotation.

The sheath bending adjusting handle 100 provided in this embodiment is matched with the sheath 2000 capable of bending in one or more directions, and it can be understood that, when one pulling wire 3000 of the sheath 2000 is provided, the pulling wire 3000 drives the distal end of the sheath 2000 to bend in one direction, and at this time, the sheath bending adjusting handle 100 is a unidirectional bending adjusting handle; when two pulling wires 3000 of the sheath tube 2000 are provided, the two pulling wires 3000 can drive the sheath tube 2000 to bend towards two different directions, and the sheath tube bending adjusting handle 100 is a bidirectional bending adjusting handle; when the pulling lines 3000 of the sheath tube 2000 are three, the three pulling lines 3000 can drive the sheath tube 2000 to bend towards three different directions, and at this time, the sheath tube bending adjusting handle 100 is a three-way bending adjusting handle. The three-way bend adjusting mode, the two-way bend adjusting mode and the one-way bend adjusting mode are described in sequence through three embodiments.

Example one

Referring to fig. 1 to 15, the sheath bending adjustment handle 100 of the present embodiment can adjust the sheath 2000 in three directions, that is, the sheath bending adjustment handle 100 of the present embodiment can cooperate with three pulling wires 3000 of the sheath 2000, so that the distal end of the sheath 2000 is respectively bent in three different directions under the pulling of the three pulling wires 3000. As shown in fig. 1 to 4, the sheath bending adjusting handle 100 includes a housing 10, two sets of driving assemblies 30, and two winding locking mechanisms 20, each set of driving assemblies 30 is matched with one winding locking mechanism 20, the sheath 2000 is inserted into the housing 10, the two sets of winding locking mechanisms 20 are arranged in the housing 10 along the axial direction of the sheath 2000, and three pulling wires 3000 extend from the tube section of the sheath 2000 in the housing 10 and are matched with the two winding locking mechanisms 20.

In this embodiment, the two sets of driving assemblies 30 are a first driving assembly 301 and a second driving assembly 302, as shown in fig. 2, the first driving assembly 301 and the second driving assembly 302 may be installed in the housing 10 in opposite directions, and thus, the knob 31 of the first driving assembly 301 and the knob 31 of the second driving assembly 302 are respectively located at two opposite sides of the housing 10, such an arrangement manner can avoid interference between the two knobs 31, and is beneficial to improving the compactness of the internal structure of the housing 10, fully utilizes the installation space in the housing 10, and reduces the overall volume of the sheath bending handle 100. Further, the structures of the first driving assembly 301 and the second driving assembly 302 may be the same, and the specific structures of the housing 10, the first driving assembly 301 and the second driving assembly 302 refer to the above embodiments, and are not described herein again.

Continuing to refer to fig. 2 and 3, illustratively, the two winding locking mechanisms 20 are a first winding locking mechanism 201 and a second winding locking mechanism 202, respectively, the three pulling wires 3000 are a first pulling wire 3001, a second pulling wire 3002 and a third pulling wire 3003, respectively, the first winding locking mechanism 201 is engaged with the first pulling wire 3001, and the second winding locking mechanism 202 is engaged with the second pulling wire 3002 and the third pulling wire 3003 at the same time; first drive assembly 301 drives the first reel 2201 rotation of first wire winding locking mechanism 201, and then the pulling first reel 3001 that leads to, second drive assembly 302 drives the second reel 2202 rotation of second wire winding locking mechanism 202, and then through the rotation direction difference, the pulling second reel 3002 or the third reel 3003 that leads to, from this, the sheath pipe accent curved handle 100 that this embodiment provided is convenient for the operator to operate, has solved sheath pipe accent curved handle 100 complex operation's problem.

With continuing reference to fig. 2 and 3, and with combined reference to fig. 9 and 10, the first winding locking mechanism 201 of the present embodiment includes a first spindle 2101 and a first reel 2201, the second winding locking mechanism 202 includes a second spindle 2102 and a second reel 2202, the first reel 2201 is provided with a winding slot 221, a set of through-hole 223 and a locking hole 224, and the first spindle 2101 is provided with a set of first spindle hole 211 and a set of second spindle hole 212; the second reel 2202 is provided with two winding grooves 221, two sets of through-hole 223 and lockhole 224, and the second main shaft 2102 is provided with two sets of first shaft holes 211 and second shaft holes 212. In addition, as shown in fig. 1, pointers 60 are respectively connected to the end portions of the first main shaft 2101 and the second main shaft 2102, the two pointers 60 are used for respectively displaying the rotation angles of the first main shaft 2101 and the second main shaft 2102, and accordingly, two sets of scale marks and two transparent covers which are matched with the two pointers 60 are provided on the housing 10.

With continued reference to fig. 9 and 15, the outer wheel wall of the first reel 2201 is circumferentially provided with a first winding slot 2211, the first reel 2201 is radially provided with a set of through hole 223 and a wire locking hole 224 which are vertically communicated, the first pulling wire 3001 extends from the sheath tube 2000 and then is wound in the first winding slot 2211, and a portion of the first pulling wire 3001 near the proximal end extends into the through hole 223 and the first shaft hole 211 and is clamped by two pulling members, so that when the first reel 2201 rotates in the winding direction of the first pulling wire 3001, the first pulling wire 3001 can be tensioned, and further the distal end of the sheath tube 2000 bends in the first direction.

In some embodiments of the present invention, as shown in fig. 2, the sheath 2000 inserted into the housing 10 is partially disposed in the first winding slot 2211, the axis of the sheath 2000 is parallel to the tangential direction of the first winding reel 2201, the first pulling wire 3001 extends from the side of the sheath 2000 facing the first winding slot 2211, extends tangentially and is wound in the first winding slot 2211 in the counterclockwise direction, further, the bottom surface of the first winding slot 2211 is configured as a curved surface, and the bottom surface of the groove is matched with the shape of the outer sidewall of the sheath 2000, so that the first pulling wire 3001 is as tangential or nearly tangential to the first winding reel 2201 as much as possible, thereby preventing the outer wall of the sheath 2000 from being scratched when the first pulling wire 3001 is pulled.

Referring to fig. 10, the outer wall of the second reel 2202 is circumferentially provided with a second winding groove 2212 and a third winding groove 2213, the second winding groove 2212 and the third winding groove 2213 are axially arranged, the second reel 2202 is radially provided with two groups of through holes 223 and locking holes 224 which are vertically communicated, one group is positioned in the second winding groove 2212, the other group is positioned in the third winding groove 2213, correspondingly, a main shaft 21 matched with the second reel 2202 is radially provided with two groups of first shaft holes 211 and second shaft holes 212 which are vertically communicated, and the second pulling wire 3002 extends out of the sheath pipe 2000, is wound in the second winding groove 2212, and extends into the corresponding through holes 223 and first shaft holes 211 and is clamped by two pulling members; the third pulling wire 3003 extends from the sheath 2000, and then is wound in the third winding slot 2213, and extends into the corresponding through hole 223 and the first axial hole 211 to be clamped by the two pulling members. In this embodiment, the winding directions of the second pulling wire 3002 and the third pulling wire 3003 are opposite, and taking the example where the second pulling wire 3002 is wound in the clockwise direction and the third pulling wire 3003 is wound in the counterclockwise direction, when the second reel 2202 is rotated in the clockwise direction, the second pulling wire 3002 can be pulled, and the distal end of the sheath tube 2000 can be bent in the second direction, and when the second reel 2202 is rotated in the counterclockwise direction, the third pulling wire 3003 can be pulled, and the distal end of the sheath tube 2000 can be bent in the third direction opposite to the second direction.

On the basis of the above-mentioned embodiment, the sheath 2000 may be partially located in the second winding slot 2212 or the third winding slot 2213, that is, one of the second winding slot 2212 and the third winding slot 2213 is flush with the first winding slot 2211, so as to ensure that the sheath 2000 is linearly threaded, further, the slot bottom surface of the second winding slot 2212 or the third winding slot 2213 for the sheath 2000 to be threaded is set to be a cambered surface, so as to ensure that at least one of the second pull wire 3002 and the third pull wire 3003 is kept as tangential or nearly tangential as possible with the second reel 2202, thereby reducing or avoiding the scratch on the outer wall of the sheath 2000.

Further, in some embodiments of the present invention, as shown in fig. 2 and 10, the outer wheel wall of the second reel 2202 is further provided with a sheath escape groove 222, the sheath escape groove 222 is located between the second winding groove 2212 and the third winding groove 2213 in the axial direction of the second reel 2202, and is flush with the first winding groove 2211, the sheath escape groove 222 may be provided around the outer wheel wall of the second reel 2202, or may be provided only at a portion of the second reel 2202 facing the sheath 2000, and the shape of the sheath escape groove 222 is not particularly limited in this embodiment. The sheath avoiding groove 222 can accommodate part of the tube segment of the sheath 2000, the bottom surface of the sheath avoiding groove 222 can contact with the side wall of the sheath 2000, and further, the bottom surface of the sheath avoiding groove 222 can be set to be a cambered surface and matched with the shape of the outer side wall of the sheath 2000, so that the second pulling wire 3002 and the third pulling wire 3003 are close to the second reel 2202 as much as possible, and the scratch on the outer wall of the sheath 2000 is reduced or avoided.

In addition to the above-described embodiment, as shown in fig. 2, the axis of the sheath 2000 is parallel to the tangential direction of the second reel 2202, the second pull wire 3002 is extended from the side of the sheath 2000 facing the top cover 11, extends obliquely upward, and is wound in the second winding groove 2212 in the clockwise direction, and the third pull wire 3003 is extended from the side of the sheath 2000 facing the bottom case 12, extends obliquely downward, and is wound in the third winding groove 2213 in the counterclockwise direction. This prevents the second and

third pull wires

3002, 3003 from interfering with each other and twisting while ensuring that the second and

third pull wires

3002, 3003 are connected to the second reel 2202, respectively.

Further, in some embodiments of the present invention, as shown in fig. 2 and 3, the sheath bending control handle 100 further includes a wire blocking lever 80, and it can be understood that, since the second pulling wire 3002 extends from the sheath 2000 and is wound in the second winding groove 2212 in the clockwise direction, when the second winding wheel 2202 rotates in the clockwise direction, a portion of the second pulling wire 3002 close to the sheath 2000 has a tendency to move away from the sheath 2000, thereby easily scratching the outer wall of the sheath 2000, in this embodiment, the wire blocking lever 80 is disposed at a corner between the sheath 2000 and the second winding wheel 2202, and the wire blocking lever 80 abuts against the second pulling wire 3002, so that the second pulling wire 3002 is bent and then wound in the second winding groove 2212, whereby, when the second pulling wire 3002 is pulled, the wire blocking lever 80 can block the second pulling wire 3002 from moving away from the above-mentioned angle and make the second pulling wire 3002 move first in a direction close to the above-mentioned angle, the second pulling wire 3002 is prevented from scratching the outer wall of the sheath 2000. The wire blocking rod 80 in this embodiment may be connected to the housing 10 by clipping, plugging or fastening, or may be integrally formed in the housing 10.

Further, referring to fig. 2 to 4, in the present embodiment, the number of the limiting mechanisms 70 is two, the two limiting mechanisms 70 are a first limiting mechanism 701 and a second limiting mechanism 702 respectively, the first limiting mechanism 701 is matched with the first winding locking mechanism 201, the first limiting mechanism 701 includes a first rotating rod 711 and two limiting plates 72, according to the above embodiment, the first pulling wire 3001 is wound on the first reel 2201 counterclockwise, in the present embodiment, the first rotating rod 711 is vertically connected to the first spindle 2101, two ends of the first rotating rod 711 are abutted to the two limiting plates 72 respectively in an initial state, so that the first rotating rod 711 cannot rotate clockwise, and only can rotate counterclockwise to pull the first pulling wire 3001, which can prevent an operator from twisting the knob 31 around an incorrect direction, and further prevent the first pulling wire 3001 from loosening and falling off; the second limiting mechanism 702 is matched with the second winding locking mechanism 202, the second limiting mechanism 702 comprises a second rotating rod 712 and a limiting plate 72, the second pulling wire 3002 and the third pulling wire 3003 are wound on the second reel 2202 according to the above embodiment, the second rotating rod 712 is vertically connected with the second main shaft 2102 in the embodiment, one end of the second rotating rod 712 is abutted to the limiting plate 72 after rotating for a certain angle, and the second rotating rod cannot rotate continuously, so that the rotating range of the second reel 2202 is limited, the knob 31 can be prevented from being excessively screwed by an operator, further the second pulling wire 3002 is prevented from being loosened and falling, the third pulling wire 3003 is prevented from being torn and broken, or the second pulling wire 3002 is prevented from being torn and broken, and the third pulling wire 3003 is prevented from being loosened and falling.

Example two

Referring to fig. 16, the sheath bending adjusting handle 100 of the present embodiment can adjust the sheath 2000 in two directions, that is, the sheath bending adjusting handle 100 of the present embodiment can be matched with the two pulling wires 3000 of the sheath 2000, so that the distal end of the sheath 2000 is respectively bent in two different directions under the pulling of the two pulling wires 3000. In the present embodiment, each set of driving components 30 is coupled to one winding locking mechanism 20, and it is understood that when the driving components 30 are arranged as a set, the winding locking mechanisms 20 are arranged as one and are coupled to two pulling wires 3000 at the same time; when the driving assemblies 30 are provided in two sets, the winding locking mechanisms 20 are provided in two sets, and each winding locking mechanism 20 is engaged with one pulling wire 3000. The sheath bending adjusting handle 100 comprises a housing 10, a sheath 2000 is arranged in the housing 10 in a penetrating manner, and two pulling wires 3000 extend out from the tube section of the sheath 2000 in the housing 10 and are matched with one or two winding locking mechanisms 20.

When the two winding locking mechanisms 20 are respectively engaged with the two pulling wires 3000, the structure of the driving assembly 30 may refer to the structure of the first driving assembly 301 in the first embodiment, the structure of the winding locking mechanism 20 may refer to the structure of the first winding locking mechanism 201 in the first embodiment, in this embodiment, the two winding locking mechanisms 20 are arranged along the axial direction of the sheath tube 2000, the two pulling wires 3000 extend from different portions of the sheath tube 2000 and are respectively engaged with the two reels 22, and the manner of engaging the two pulling wires 3000 with the reels 22 may refer to the manner of engaging the first pulling wire 3001 with the first reel 2201 in the first embodiment, which is not described herein again. In the embodiment, the two groups of driving assemblies 30 and the two winding locking mechanisms 20 are used for controlling the two pulling wires 3000, so that the operation of an operator is facilitated, and the problem that the sheath bending adjusting handle 100 is complex to operate is solved.

Further, the sheath bending adjusting handle 100 provided in this embodiment further includes two limiting mechanisms 70, the number of the limiting mechanisms 70 is two, the two limiting mechanisms 70 are respectively matched with the two winding locking mechanisms 20, the specific structure of the limiting mechanism 70 can refer to the specific structure of the first limiting mechanism 701 in the first embodiment, which is not described herein again, and the limiting mechanism 70 is used for avoiding the operator from twisting the knob 31 around the wrong direction, so as to avoid the corresponding pulling line 3000 from loosening and falling.

When one winding locking mechanism 20 is engaged with two pulling wires 3000 at the same time, the structure of the driving assembly 30 can refer to the structure of the second driving assembly 302 in the first embodiment, the structure of the winding locking mechanism 20 can refer to the structure of the second winding locking mechanism 202 in the first embodiment, in this embodiment, the two pulling wires 3000 extend from the sheath 2000 in opposite directions and are respectively wound in the two winding grooves 221 of the winding locking mechanism 20, the two pulling wires 3000 are pulled by the reel 22 through different rotation directions, and the manner of engaging the two pulling wires 3000 with the reel 22 can refer to the manner of engaging the second pulling wire 3002 and the third pulling wire 3003 with the second reel 2202 in the first embodiment, which will not be described herein again. In the embodiment, the two pulling wires 3000 are simultaneously controlled by the group of driving assemblies 30 and the winding locking mechanism 20, so that the structural compactness of the sheath bending adjusting handle 100 is improved, the operation of an operator is facilitated, and the problem that the operation of the sheath bending adjusting handle 100 is complicated is solved.

Further, the sheath bending adjustment handle 100 provided by this embodiment further includes a wire blocking rod 80 and a limiting mechanism 70, the specific structure of the wire blocking rod 80 can refer to the specific structure of the wire blocking rod 80 in the first embodiment, and no further description is given here, in this embodiment, the wire blocking rod 80 is used for cooperating with the pulling wire 3000 wound clockwise on the reel 22, so as to avoid the pulling wire 3000 from damaging the outer wall of the sheath 2000. The specific structure of the limiting mechanism 70 can refer to the specific structure of the second limiting mechanism 702 in the first embodiment, and will not be described herein again, and the limiting mechanism 70 in this embodiment is used to prevent one of the two pull wires 3000 from being loose due to over-rotation of the reel 22, and the other one of the two pull wires is torn and broken.

EXAMPLE III

Referring to fig. 17 to 20, the sheath bending adjustment handle 100 of the present embodiment can adjust the sheath 2000 in one direction, that is, the sheath bending adjustment handle 100 of the present embodiment can cooperate with a pulling wire 3000 of the sheath 2000, so that the distal end of the sheath 2000 is bent toward a set direction under the pulling of the pulling wire 3000. As shown in fig. 18, the sheath bending adjusting handle 100 of the present embodiment includes a housing 10, a set of driving components 30 and a winding locking mechanism 20, a sheath 2000 is inserted into the housing 10, and a pulling wire 3000 extends from the section of the sheath 2000 in the housing 10 and is engaged with the winding locking mechanism 20.

The structure of the driving assembly 30 in this embodiment can refer to the structure of the first driving assembly 301 in the first embodiment, the structure of the winding wire locking mechanism 20 can refer to the structure of the first winding wire locking mechanism 201 in the first embodiment, and the manner of matching the pull wire 3000 with the reel 22 can refer to the manner of matching the first pull wire 3001 with the first reel 2201 in the first embodiment, which will not be described again. In the embodiment, the pulling wire 3000 is controlled by the group of driving assemblies 30 and the winding locking mechanism 20, so that the operation of an operator is facilitated, and the problem that the sheath bending adjusting handle 100 is complex to operate is solved.

Further, as shown in fig. 18 and fig. 19, the sheath bending adjustment handle 100 according to this embodiment further includes a limiting mechanism 70, the limiting mechanism 70 is matched with the winding locking mechanism 20, and a specific structure of the limiting mechanism 70 may refer to a specific structure of the first limiting mechanism 701 according to the first embodiment, which is not described herein again, and in this embodiment, the limiting mechanism 70 is used to prevent an operator from twisting the knob 31 around a wrong direction, so as to prevent the pulling wire 3000 from loosening and falling off. Further, as shown in fig. 20, in some embodiments of the present invention, the sheath bending adjustment handle 100 may further include a gear set 90, and the gear set 90 is disposed in the housing 10 and is in transmission connection with the knob 31 and the worm 32, respectively, so that the gear set 90 can achieve the effect of increasing the transmission ratio, and the rotation efficiency of the worm wheel 33 is improved when the operator rotates the knob 31.

Referring to fig. 21, the second aspect of the present invention is directed to a delivery device 1000, wherein the delivery device 1000 may be used in interventional procedures for delivering implants such as artificial valves, stents, valve claspers 4000, etc. The delivery device 1000 comprises at least one sheath 2000 and at least one sheath bending adjusting handle 100 according to any of the above embodiments, wherein a portion of the sheath 2000 near the proximal end is inserted into the sheath bending adjusting handle 100. In this embodiment, the sheath 2000 may be a hollow sheath 2000 with a bendable or controllable distal end, such as the bendable sheath 2000 or the shaping sheath 2000, the sheath 2000 is straight or approximately straight when not subjected to bending force, illustratively, the sheath 2000 is provided with an adjustable bent tube section at a position close to the distal end, the pulling wire 3000 is connected with the adjustable bent tube section, and the sheath bending handle 100 can bend the distal end of the sheath 2000 by pulling the pulling wire.

Illustratively, the delivery device 1000 includes a primary sheath 2000 and a secondary sheath 2000, the secondary sheath 2000 can be inserted into the primary sheath 2000, the implant can be connected to the end of the secondary sheath 2000, the primary sheath 2000 is provided with a pull line 3000, a portion of the primary sheath 2000 near the proximal end is inserted into a sheath bending adjusting handle 100, and the distal end of the primary sheath 2000 can be bent in one direction under the control of the sheath bending adjusting handle 100; the second-stage sheath 2000 is provided with three pulling wires 3000, the part of the second-stage sheath 2000 near the proximal end is inserted into another sheath bending adjusting handle 100, and the distal end of the second-stage sheath 2000 can be bent in three directions under the control of the sheath bending adjusting handle 100, so that the implant can be conveyed to a set position in the patient. In this embodiment, the number of the sheath 2000 and the sheath bending adjusting handle 100 is not particularly limited, and may be set according to actual situations. The delivering device 1000 of the present embodiment has the same advantages as the sheath bending adjusting handle 100 of the previous embodiment, and will not be described herein again.

Referring to fig. 22, the embodiment of the third aspect of the present invention provides a valve repair system 5000, the valve repair system 5000 comprises a valve clamp 4000 and a delivery device 1000 according to the embodiment of the second aspect, the delivery device 1000 is used for delivering the valve clamp 4000, and the distal end of the sheath 2000 is detachably connected to the valve clamp 4000. Illustratively, the delivery device 1000 includes a plurality of sheaths 2000 and a plurality of sheath bending handles 100, each sheath bending handle 100 cooperating with one of the sheaths 2000 for controlling the distal end of the corresponding sheath 2000 to bend in a set direction during delivery of the valve clamp 4000 to deliver the valve clamp 4000 to a set position, and the valve repair system 5000 further includes an actuating member for controlling the valve clamp 4000, the actuating member being inserted through the sheath 2000 and detachably connected to the valve clamp 4000. This embodiment is not particularly limited thereto. The valve repair system 5000 of the present embodiment has the same advantages as the sheath bending handle 100 and the delivery device 1000 of the previous embodiment, and will not be described in detail herein.

In an alternative embodiment, the valve repair system 5000 includes a valve clamp 4000, a primary sheath, a secondary sheath, a tertiary sheath, and a delivery device 1000, the delivery device 1000 includes a first sheath bending adjustment handle and a second sheath bending adjustment handle, wherein the first sheath bending adjustment handle 100 can be configured according to the sheath bending adjustment handle 100 in the third embodiment of the first aspect for performing unidirectional bending on the primary sheath, the second sheath bending adjustment handle can be configured according to the sheath bending adjustment handle 100 in the first embodiment of the first aspect for performing three-directional bending on the secondary sheath, the distal end of the tertiary sheath is detachably connected to the valve clamp, on the basis of which, the secondary sheath is inserted into the primary sheath and penetrates out of the distal end, the tertiary sheath is inserted into the secondary sheath and penetrates out of the distal end, during the operation of the valve repair system 5000, the bending of the primary sheath tube drives the secondary sheath tube and the tertiary sheath tube to be bent simultaneously, the bending of the secondary sheath tube drives the tertiary sheath tube to be bent, and then the valve clamping device 4000 is driven to reach a set position, and the fine adjustment and the direction can be driven in the process of clamping the valve by the valve clamping device 4000 until the clamping is completed.

The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention are also included in the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.

Claims

1. The utility model provides a curved handle is transferred to sheath pipe, its characterized in that, curved handle is transferred to sheath pipe is used for pulling the tractive line of sheath pipe so that the distal end of sheath pipe is crooked towards setting for the direction, curved handle is transferred to sheath pipe includes at least a set of drive assembly and at least one wire winding locking mechanism, wire winding locking mechanism includes:

the main shaft is in transmission connection with the driving assembly;

2. The sheath bending control handle according to claim 1, wherein the width of the winding groove is greater than or equal to the outer diameter of the sheath in the axial direction of the reel so as to accommodate a part of the tube section of the sheath, and the bottom surface of the winding groove is in contact with and/or is matched with the side wall of the sheath.

3. The sheath bending handle according to claim 1, wherein the outer wheel wall of the reel is further provided with a sheath avoiding groove, the width of the sheath avoiding groove is greater than or equal to the outer diameter of the sheath in the axial direction of the reel so as to accommodate a part of the tube section of the sheath, and the bottom surface of the sheath avoiding groove is in contact with and/or is matched with the side wall of the sheath.

4. The sheath bending control handle according to claim 3, wherein the winding grooves are provided in two numbers, and the two winding grooves are respectively located on both sides of the sheath escape groove in an axial direction of the reel.

5. The sheath bending control handle according to claim 1, wherein the through-wire hole and the wire-locking hole penetrate the reel in a radial direction of the reel from a bottom of the winding groove, respectively.

6. The sheath bending adjusting handle according to claim 1 or 5, wherein the axis of the lock wire hole is perpendicular to the axis of the through wire hole.

7. The sheath bending adjusting handle according to claim 5, wherein the wire pressing members are provided in at least one group, the number of the wire pressing members in each group is two, and the two wire pressing members are respectively inserted into the lock wire holes from two ends of the lock wire holes and abut against each other to clamp the pulling wire.

8. The sheath bending adjusting handle according to claim 7, wherein at least one set of a first shaft hole and a second shaft hole which intersect and communicate with each other is radially arranged on the main shaft in a penetrating manner, the first shaft hole and the through hole are coaxially arranged, the second shaft hole and the locking hole are coaxially arranged, and the inner wall of the second shaft hole is provided with threads.

9. The sheath bending adjusting handle according to claim 1 or 8, wherein the line pressing member is provided as a stud, and/or the end surface of the line pressing member for pressing the pulling line is provided with a concave-convex stripe.

10. The sheath bending adjusting handle according to claim 1, wherein a baffle is further arranged on the winding wheel, and the baffle is positioned at the notch of the winding groove to block the pulling wire.

11. The sheath bending adjusting handle according to claim 1, wherein the driving assembly comprises a knob, a worm and a worm wheel which are connected in sequence, the worm wheel is connected with the main shaft, the sheath bending adjusting handle further comprises a housing, and a sheath fixing assembly and a limiting mechanism which are arranged in the housing, the sheath fixing assembly is used for fixing the sheath, and the limiting mechanism is used for limiting the reel to rotate within a set range and/or towards a set direction.

12. A delivery device comprising at least one sheath and a sheath bending adjustment handle according to any one of claims 1 to 11, the sheath being disposed through the sheath bending adjustment handle.

13. A valve repair system comprising a valve binder and the delivery device of claim 12 for delivering the valve binder, the distal end of the sheath being removably coupled to the valve binder.