Bending control handle and intervention system

Abstract

The present invention provides a bending control handle and an intervention system. The bending control handle includes: a driving part, a circumferential indication part, a transmission part, and a bending control wire connection part; the bending control handle has an axis; the driving part and the circumferential indication part are respectively arranged to be circumferentially rotatable around the axis, and the bending control wire connection part is arranged to be movable along the direction of the axis; the circumferential rotation of the driving part is converted into the movement of the bending control wire connection part along the direction of the axis through the transmission part, and the circumferential rotation of the driving part is also converted into the circumferential rotation of the circumferential indication part through the transmission part; wherein, there is a predetermined proportional relationship between the movement amount of the bending control wire connection part along the direction of the axis and the rotation amount of the circumferential indication part along the circumferential direction. With such a configuration, the circumferential indication part realizes indication through circumferential movement, and it occupies less space, providing space for the arrangement of other components of the bending control handle.

Description

Technical Field

[0001] The present invention relates to the technical field of medical devices, and particularly to a bending control handle and an intervention system. Background Art

[0002] Interventional therapy is a brand-new treatment technology developed internationally in recent years. Its principle is a minimally invasive treatment using modern high-tech means. Under the guidance of medical imaging equipment, special precision instruments are introduced into the human body to diagnose and locally treat internal lesions. This technology has the characteristics of small trauma, fast recovery, good effect, etc., and avoids the harm caused to patients by traditional surgical operations.

[0003] An intervention system for realizing interventional therapy generally includes two parts: a catheter and a handle. The catheter intervenes in the human body, and the handle, as the power source and drive control end of the entire interventional therapy, needs to ensure sufficient safety and effectiveness. In order to better intervene in tortuous blood vessels, there is a bending control catheter in the prior art. Through a bending control wire arranged inside the catheter, the bending shape of the catheter head can be adjusted. The bending control wire extends along the catheter to the handle and is manipulated at the handle. However, since the bending control wire is generally arranged inside the handle, it is difficult to clearly know its travel, resulting in poor manipulation accuracy. Summary of the Invention

[0004] The purpose of the present invention is to provide a bending control handle and an intervention system to solve the problem that it is difficult to clearly know the travel of the bending control wire in the existing bending control catheter.

[0005] To solve the above technical problems, the present invention provides a bending control handle, which includes: a driving part, a circumferential indicating part, a transmission part, and a bending control wire connecting part; the bending control handle has an axis; the driving part and the circumferential indicating part are respectively circumferentially rotatably arranged around the axis, and the bending control wire connecting part is movably arranged along the direction of the axis;

[0006] The circumferential rotation of the driving part is converted into the movement of the bending control wire connecting part along the direction of the axis through the transmission part, and the circumferential rotation of the driving part is also converted into the circumferential rotation of the circumferential indicating part through the transmission part;

[0007] Wherein, there is a predetermined proportional relationship between the movement amount of the bending control wire connecting part along the direction of the axis and the rotation amount of the circumferential indicating part along the circumference.

[0008] Optionally, the transmission part includes a rotating shaft and an intermediate member; the rotating shaft is connected to the driving part, the rotating shaft is circumferentially rotatably arranged around the axis under the drive of the driving part, and the rotating shaft is connected to the intermediate member through a first thread connection;

[0009] The movement direction of the intermediate member is restricted to extend helically around the axis. The intermediate member is movably connected to the circumferential indicating portion in the direction of the axis, and the position of the intermediate member relative to the circumferential indicating portion in the circumferential direction is defined;

[0010] When the rotating shaft rotates circumferentially, the intermediate member is driven to move helically around the axis through the first thread, and the helical movement of the intermediate member drives the circumferential indicating portion to rotate circumferentially.

[0011] Optionally, the bending control handle further includes a first limiting portion, and the intermediate member includes a second limiting portion;

[0012] The first limiting portion extends helically around the axis, and the second limiting portion is movably arranged relative to the first limiting portion along the extending direction of the first limiting portion; or, the second limiting portion extends helically around the axis, and the first limiting portion is movably arranged relative to the second limiting portion along the extending direction of the second limiting portion;

[0013] When the intermediate member moves in the direction of the axis under the drive of the rotating shaft, based on the transmission conversion between the first limiting portion and the second limiting portion, a circumferential rotation is synchronously generated to form a helical movement.

[0014] Optionally, one of the first limiting portion and the second limiting portion is a first groove, and the other is a first protrusion. The first protrusion is movably embedded in the first groove; the first protrusion and the first groove are matched in size in the direction of the axis and are in mutual abutment.

[0015] Optionally, the intermediate member includes a third limiting portion, and the circumferential indicating portion includes a fourth limiting portion; the position of the circumferential indicating portion in the direction of the axis is defined;

[0016] The extending direction of the fourth limiting portion is arranged at an angle to the movement direction of the intermediate member, and the third limiting portion is movably arranged relative to the fourth limiting portion along the extending direction of the fourth limiting portion; or, the extending direction of the third limiting portion is arranged at an angle to the movement direction of the intermediate member, and the fourth limiting portion is movably arranged relative to the third limiting portion along the extending direction of the third limiting portion;

[0017] When the intermediate member moves helically, based on the transmission conversion between the third limiting portion and the fourth limiting portion, the circumferential indicating portion is driven to rotate circumferentially.

[0018] Optionally, one of the third limiting portion and the fourth limiting portion is a second groove, and the other is a second protrusion. The second protrusion is movably embedded in the second groove; the second protrusion and the second groove are matched in dimension along a direction perpendicular to the extending direction of the fourth limiting portion and are abutted against each other.

[0019] Optionally, the rotating shaft has a through inner cavity along the direction of the axis; the intermediate member is sleeved outside the rotating shaft, and the bending wire connecting portion passes through the inner cavity; the circumferential indicating portion is sleeved outside the intermediate member.

[0020] Optionally, the transmission portion includes a rotating shaft, the rotating shaft is connected to the driving portion, the rotating shaft is circumferentially rotatably arranged under the driving of the driving portion, and the rotating shaft is connected to the bending wire connecting portion by a second thread connection; when the rotating shaft rotates circumferentially, the bending wire connecting portion is driven to move along the direction of the axis through the second thread.

[0021] Optionally, the transmission portion includes a rotating shaft; the rotating shaft is connected to the driving portion, and the rotating shaft is circumferentially rotatably arranged under the driving of the driving portion; the bending handle includes a base and a plurality of balls arranged circumferentially around the axis, and the rotating shaft is connected to the base through the plurality of balls along the direction of the axis.

[0022] Optionally, the bending wire connecting portion includes a stranded wire rod and a wire pressing assembly; the stranded wire rod is used for the bending wire to be coiled around, and the wire pressing assembly is used for fixing the bending wire after passing around the stranded wire rod; wherein the axis of the stranded wire rod is arranged at an angle to the axis, and the wire pressing and fixing direction of the wire pressing assembly is parallel to the axis.

[0023] Optionally, the bending handle includes a housing, the housing is provided with an observation window arranged circumferentially, and the circumferential indicating portion is located inside the housing and within the coverage area of the observation window.

[0024] Optionally, the transmission ratio between the driving portion and the circumferential indicating portion is greater than 1.

[0025] To solve the above technical problems, the present invention further provides an intervention system, which includes the bending handle as described above, and further includes a bending wire, the bending wire is connected to the bending wire connecting portion, and moves along the direction of the axis under the driving of the bending wire connecting portion.

[0026] In summary, in the bending control handle and the intervention system provided by the present invention, the bending control handle includes: a driving part, a circumferential indication part, a transmission part, and a bending control wire connection part; the bending control handle has an axis; the driving part and the circumferential indication part are respectively arranged to be circumferentially rotatable around the axis, and the bending control wire connection part is arranged to be movable along the direction of the axis; the circumferential rotation of the driving part is converted into the movement of the bending control wire connection part along the direction of the axis through the transmission part, and the circumferential rotation of the driving part is also converted into the circumferential rotation of the circumferential indication part through the transmission part; wherein, there is a predetermined proportional relationship between the movement amount of the bending control wire connection part along the direction of the axis and the rotation amount of the circumferential indication part along the circumferential direction.

[0027] With such a configuration, the driving part can drive the bending control wire connection part to move along the direction of the axis, and at the same time drive the circumferential indication part to rotate circumferentially, so as to indicate the stroke of the bending control wire connection part through the circumferential indication part. Further, since the circumferential indication part realizes the indication through circumferential movement, it occupies a small space, providing space for the arrangement of other components of the bending control handle. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Those of ordinary skill in the art will understand that the provided drawings are used to better understand the present invention and do not constitute any limitation to the scope of the present invention. Among them:

[0029] Figure 1 is a schematic diagram of the bending control handle according to an embodiment of the present invention;

[0030] Figure 2 is a schematic cross-sectional view of the bending control handle according to an embodiment of the present invention along the axial direction;

[0031] Figure 3 is a schematic diagram of the rotating shaft and the base according to an embodiment of the present invention;

[0032] Figure 4 is a schematic diagram of the first limiting part and the second limiting part according to an embodiment of the present invention;

[0033] Figure 5 is a schematic diagram of the stroke of the bending control wire connection part and the intermediate member according to an embodiment of the present invention;

[0034] Figure 6 is a schematic diagram of the movement direction of the intermediate member according to an embodiment of the present invention;

[0035] Figure 7 is a schematic diagram of the circumferential indication part according to an embodiment of the present invention;

[0036] Figure 8 is a schematic diagram of the movement direction of the circumferential indication part according to an embodiment of the present invention;

[0037] Figure 9It is a schematic diagram of the bending control wire connection part of an embodiment of the present invention.

[0038] In the attached drawings:

[0039] 1 - driving part; 11 - knob; 2 - circumferential indicating part; 24 - fourth limiting part; 3 - transmission part; 31 - rotating shaft; 311 - first external thread; 32 - intermediate part; 322 - second limiting part; 323 - third limiting part; 4 - bending control wire connection part; 41 - second external thread; 42 - stranded wire rod; 43 - wire pressing assembly; 44 - protective sleeve; 45 - threaded section; 46 - follower section; 50 - base; 51 - housing; 52 - observation window; 53 - first limiting part; 6 - bending control wire; 71 - conduit; 72 - conduit connection part; 8 - ball. Detailed implementation manners

[0040] To make the objectives, advantages and features of the present invention clearer, the present invention will be further described in detail below with reference to the attached drawings and specific embodiments. It should be noted that the attached drawings are all in a very simplified form and are not drawn to scale, only for conveniently and clearly assisting in explaining the objectives of the embodiments of the present invention. In addition, the structures shown in the attached drawings are often part of the actual structures. In particular, the attached drawings need to show different emphases and sometimes different scales are adopted.

[0041] As used in the present invention, the singular forms "a", "an", and "the" include plural referents, the term "or" is generally used in the sense of including "and / or", the term "several" is generally used in the sense of including "at least one", the term "at least two" is generally used in the sense of including "two or more", in addition, the terms "first", "second", "third" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance or implicitly indicating the quantity of the indicated technical features. Thus, the features defined with "first", "second", "third" may explicitly or implicitly include one or at least two of such features. "One end" and "the other end", as well as "proximal end" and "distal end" generally refer to two corresponding parts, which include not only the endpoints. The terms "proximal end" and "distal end" are defined herein with respect to an interventional system, which has one end for intervening in the human body (such as a deflectable catheter) and a manipulation end extending out of the body (such as a deflectable handle). The term "proximal end" refers to the position of an element closer to the manipulation end of the interventional system extending out of the body, and the term "distal end" refers to the position of an element closer to the end of the interventional system intervening in the human body and thus farther from the manipulation end of the interventional system. Optionally, in the application scenarios of manual or hand operation, the terms "proximal end" and "distal end" are defined herein with respect to an operator such as a surgeon or a clinician. The term "proximal end" refers to the position of an element closer to the operator, and the term "distal end" refers to the position of an element closer to the interventional system and thus farther from the operator. In addition, as used in the present invention, "mounted", "connected", "coupled", an element "disposed" on another element should be understood in a broad sense, generally only indicating that there is a connection, coupling, cooperation or transmission relationship between the two elements, and the two elements can be directly or indirectly connected, coupled, cooperated or transmitted through an intermediate element, and cannot be construed as indicating or implying the spatial position relationship between the two elements, that is, an element can be in any orientation such as inside, outside, above, below or on one side of another element, unless otherwise explicitly stated in the content. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances. In addition, directional terms such as above, below, up, down, upward, downward, left, right, etc. are used with respect to the exemplary embodiments as shown in the figures, the upward or upward direction is towards the top of the corresponding figure, and the downward or downward direction is towards the bottom of the corresponding figure.

[0042] The object of the present invention is to provide a deflectable handle and an interventional system to solve the problem that it is difficult to clearly know the travel of the deflectable wire in the existing deflectable catheter.

[0043] As described in the background art, it is difficult to clearly and accurately know the stroke of the bending control line in the prior art. Since the bending control line generally moves along the axial direction of the bending control handle, in order to clearly know the stroke of the bending control line, those skilled in the art may set an axial observation structure or indication structure on the bending control handle, which will, however, occupy a large space on the bending control handle and affect the layout of other components on the bending control handle.

[0044] Based on the above research, please refer to Figures 1 to 9 An embodiment of the present invention provides a bending control handle, which includes: a driving part 1, a circumferential indicating part 2, a transmission part 3 and a bending control line connection part 4; the bending control handle has an axis A; the driving part 1 and the circumferential indicating part 2 are respectively rotatably arranged around the axis A, and the bending control line connection part 4 is movably arranged along the direction of the axis A; the circumferential rotation of the driving part 1 is converted into the movement of the bending control line connection part 4 along the direction of the axis A through the transmission part 3, and the circumferential rotation of the driving part 1 is also converted into the circumferential rotation of the circumferential indicating part 2 through the transmission part 3; wherein, the movement amount of the bending control line connection part 4 along the direction of the axis A and the rotation amount of the circumferential indicating part 2 along the circumferential direction have a predetermined proportional relationship. The predetermined proportional relationship here can be selected according to actual conditions. Preferably, the predetermined proportional relationship is a linear proportional relationship.

[0045] With such configuration, the driving part 1 can drive the bending control line connection part 4 to move in the direction of the axis A, and at the same time drive the circumferential indicating part 2 to rotate circumferentially, so as to indicate the stroke of the bending control line connection part 4 through the circumferential indicating part 2. Furthermore, since the circumferential indicating part 2 realizes indication through circumferential movement, it occupies less space, which provides space for the arrangement of other components of the bending control handle.

[0046] The bending control handle provided by the present invention is described below in conjunction with the accompanying drawings. For the sake of convenience, the direction along the axis A is referred to as the axial direction.

[0047] Please refer to Figure 1 , Figure 2 and Figure 4 In an alternative exemplary embodiment, the bending control handle includes a shell 51 and a base 50, the base 50 is arranged along the axial direction, a part of which is located inside the shell 51, and a part of which extends out of the shell 51. The base 50 has an inner cavity opened along the axial direction, the bending control line connecting part 4 is arranged in the inner cavity of the base 50, a part of the transmission part 3 is located in the inner cavity of the base 50, and the other part passes through the outside of the base 50, and the circumferential indication part 2 is arranged outside the base 50.

[0048] Further, the housing 51 is provided with an observation window 52 arranged circumferentially. The circumferential indicating portion 2 is located inside the housing 51 and within the covered area of the observation window 52. Thus, it can be understood that the circumferential rotation of the circumferential indicating portion 2 can be visually observed through the observation window 52. Optionally, the observation window 52 can be a hollowed-out groove, or covered with a transparent material, or even part or all of the housing 51 is made of a transparent material, such that the observation window 52 is integrally formed with part or all of other areas of the housing 51. Preferably, the circumferential indicating portion 2 has a marker such as a pointer or a scale line, and the housing 51 is provided with circumferentially divided scales, which are used together with the marker to indicate the circumferential rotation amount of the circumferential indicating portion 2.

[0049] Please refer to Figure 2 and Figure 9 , in a demonstration example, the bending control handle is also connected to a catheter 71. The catheter 71 is a bending control tube, and its specific structure can refer to the prior art, which will not be elaborated in this embodiment. The catheter 71 can be connected to the base 50 through a catheter connection portion 72. Further, the bending control wire connection portion 4 is used for connecting the proximal end of the bending control wire 6. The distal end of the bending control wire 6 penetrates into the catheter 71 and extends distally. When the bending control wire connection portion 4 moves axially, it can drive the bending control wire 6 to move axially, thereby adjusting the bending of the catheter 7.

[0050] Optionally, please refer to Figures 2 to 6 , the transmission portion 3 includes a rotating shaft 31 and an intermediate member 32; the rotating shaft 31 is connected to the driving portion 1, the rotating shaft 31 is circumferentially rotatably arranged around the axis A under the drive of the driving portion 1, and the rotating shaft 31 is connected to the intermediate member 32 through a first screw connection; the movement direction of the intermediate member 32 is limited to extend spirally around the axis A, the intermediate member 32 is movably connected to the circumferential indicating portion 2 along the direction of the axis A, and the position of the intermediate member 32 relative to the circumferential indicating portion 2 in the circumferential direction is defined; when the rotating shaft 31 rotates circumferentially, it drives the intermediate member 32 to move spirally around the axis A through the first screw, and the spiral movement of the intermediate member 32 drives the circumferential indicating portion 2 to rotate circumferentially.

[0051] In an alternative demonstration example, the driving portion 1 includes a knob 11. The knob 11 is coaxially connected to the rotating shaft 31. By rotating the knob 11, the rotating shaft 31 can be driven to rotate circumferentially around the axis A. The intermediate member 32 is in a cylindrical shape and sleeved outside the rotating shaft 31. The first screw includes a first external thread 311 provided on the outer circumference of the rotating shaft 31 and a first internal thread provided on the inner circumference of the intermediate member 32. The first external thread 311 cooperates with the first internal thread, thereby realizing the connection between the rotating shaft 31 and the intermediate member 32 through the first screw connection.

[0052] Furthermore, since the movement direction of the intermediate member 32 is limited to extend spirally around the axis A, that is, when the shaft 31 rotates, the intermediate member 32 is driven to generate a spiral movement around the axis A through the conversion of the first thread, and the movement has both an axial component and a circumferential component. Furthermore, the intermediate member 32 is movably connected to the circumferential indicating portion 2 along the axial direction, so the axial component of the spiral movement of the intermediate member 32 is eliminated by the relative axial movement of the intermediate member 32 and the circumferential indicating portion 2, and since the position of the intermediate member 32 relative to the circumferential indicating portion 2 along the circumferential direction is limited, the circumferential component of the spiral movement of the intermediate member 32 drives the circumferential indicating portion 2 to generate a circumferential rotation around the axis A, thereby achieving indication.

[0053] Optionally, the bending control handle also includes a first limiting portion 53, and the middle piece 32 includes a second limiting portion 322; the first limiting portion 53 extends spirally around the axis A, and the second limiting portion 322 is movably arranged relative to the first limiting portion 53 along the extension direction of the first limiting portion 53; or, the second limiting portion 322 extends spirally around the axis A, and the first limiting portion 53 is movably arranged relative to the second limiting portion 322 along the extension direction of the second limiting portion 322; when the middle piece 32 moves along the direction of the axis A driven by the rotating shaft 31, based on the transmission conversion between the first limiting portion 53 and the second limiting portion 322, a circumferential rotation is synchronously generated to form a spiral motion, and its movement direction is as shown in FIG. Figure 6 Indicated by the arrow.

[0054] The first limiting portion 53 and the second limiting portion 322 are a set of matching limiting components, which work together to limit the movement direction of the middle piece 32 to spirally extend around the axis A. Preferably, the first limiting portion 53 is fixedly arranged inside the housing 51, or is integrally formed with the housing 51. In some embodiments, the first limiting portion 53 spirally extends around the axis A to form a feature similar to a track, and the second limiting portion 322 is movably arranged along the extension direction of the first limiting portion 53, which means that the second limiting portion 322 can only move along the extension direction of the first limiting portion 53, and will not be separated from the first limiting portion 53, forming a feature similar to a vehicle running on a track. In this way, the movement direction of the middle piece 32 is restricted.

[0055] Optionally, one of the first limiting portion 53 and the second limiting portion 322 is a first groove, and the other is a first protrusion, the first protrusion can be movably embedded in the first groove; the first protrusion and the first groove match in size along the axis A and abut against each other. Figure 4, in an alternative exemplary embodiment, the middleware 32 is movably disposed through the inner cavity of the base 50. The first limiting portion 53 is a first groove, which is spirally formed on the base 50. The first protrusion is movably disposed through the first groove, and since the axial dimension of the first protrusion matches the axial dimension of the first groove (which can be understood as the width of the first groove), the first protrusion abuts against the side wall of the first groove in the axial direction. Thus, the movement direction of the first protrusion is limited to only extend along the extending direction of the first groove. That is, the movement direction of the middleware 32 is limited to extend spirally along the first groove.

[0056] In another embodiment, it may also be that the first limiting portion 53 is a first protrusion, and the second limiting portion 322 is a first groove. Specifically, the first limiting portion 53 is a first protrusion extending spirally, and the first protrusion may be, for example, inwardly protruded and disposed in the inner cavity of the base 50. The width of the first groove in the axial direction is adapted to the width of the first protrusion in the axial direction, and the first groove can be adapted and buckled on the first protrusion and slide along the first protrusion. In this way, the movement direction of the middleware 32 can also be limited to extend spirally.

[0057] In the above embodiments, the first limiting portion 53 extends spirally around the axis A, and the second limiting portion 322 is movably disposed on the first limiting portion 53 along the extending direction of the first limiting portion 53. It can be understood that in some other embodiments, it may also be that the second limiting portion 322 on the middleware 32 extends spirally around the axis A, and the first limiting portion 53 is movably disposed on the second limiting portion 322 along the extending direction of the second limiting portion 322. For example, the second limiting portion 322 is a first groove extending spirally, and the first limiting portion 53 is a first protrusion, which can also achieve a similar effect.

[0058] It should be noted that the first limiting portion 53 and the second limiting portion 322 are not limited to the combination of protrusions and grooves. In some other embodiments, the first limiting portion 53 and the second limiting portion 322 may also be structures that contact and abut each other, such as cooperating steps, or structures that achieve limiting without contact by magnetic attraction, such as magnets. For example, the first limiting portion 53 is an iron bar extending spirally, and the second limiting portion 322 is a magnet, which is disposed opposite to the first limiting portion 53. In this way, the movement direction of the middleware 32 can also be limited. Those skilled in the art can understand and configure according to the prior art, and this embodiment will not be further elaborated.

[0059] Please refer to Figures 4 to 8, Optionally, the middleware 32 includes a third limiting portion 323, and the circumferential indicating portion 2 includes a fourth limiting portion 24; the circumferential indicating portion 2 is limited in position along the direction of the axis A; the extending direction of the fourth limiting portion 24 is arranged at an angle to the moving direction of the middleware 32, and the third limiting portion 323 is movably arranged relative to the fourth limiting portion 24 along the extending direction of the fourth limiting portion 24; alternatively, the extending direction of the third limiting portion 323 is arranged at an angle to the moving direction of the middleware 32, and the fourth limiting portion 24 is movably arranged relative to the third limiting portion 323 along the extending direction of the third limiting portion 323; when the middleware 32 moves spirally, based on the transmission conversion between the third limiting portion 323 and the fourth limiting portion 24, the circumferential indicating portion 2 is driven to rotate circumferentially.

[0060] The third limiting portion 323 and the fourth limiting portion 24 are a set of cooperating limiting components. The two work together to achieve the effect of driving the circumferential indicating portion 2 to rotate circumferentially when the middleware 32 moves spirally, and at the same time eliminate the axial component of the spiral movement of the middleware 32. Please refer to Figure 7 and Figure 8 , In an alternative exemplary embodiment, the circumferential indicating portion 2 is in a cylindrical shape and is sleeved outside the base 50 along the axis, so it is equivalent to being sleeved outside the middleware 32, that is, the circumferential indicating portion 2 is sleeved outside the middleware 32 with the base 50 in between. Of course, in some other embodiments, the base 50 may only cover a part of the middleware 32, and the circumferential indicating portion 2 may be directly sleeved on another part of the middleware 32, that is, the circumferential indicating portion 2 may also be directly sleeved on the middleware 32.

[0061] In some embodiments, the extending direction of the fourth limiting portion 24 is arranged at an angle to the moving direction of the intermediate member 32. The third limiting portion 323 moves along a spiral shape with the intermediate member 32, and its moving direction is angled relative to the extending direction of the fourth limiting portion 24. At this time, the spiral movement of the third limiting portion 323 can be decomposed into a first component along the extending direction of the fourth limiting portion 24 and a second component perpendicular to the extending direction of the fourth limiting portion 24. Since the third limiting portion 323 is movable along the extending direction of the fourth limiting portion 24, the said first component is thus eliminated and will not affect the movement between the intermediate member 32 and the circumferential indicating portion 2. And the said second component can drive the circumferential indicating portion 2 to move. Further, since the position of the circumferential indicating portion 2 along the axial direction is limited, at this time the circumferential indicating portion 2 can only rotate circumferentially. It can be understood that as long as the extending direction of the fourth limiting portion 24 is angled to the moving direction of the intermediate member 32, it can be pushed by the third limiting portion 323 to generate circumferential rotation. The smaller the angle between the extending direction of the fourth limiting portion 24 and the moving direction of the intermediate member 32, the smaller the rotation amount of the movement of the intermediate member 32 converted into the circumferential rotation of the circumferential indicating portion 2. When the angle between the extending direction of the fourth limiting portion 24 and the moving direction of the intermediate member 32 is 0°, the movement of the intermediate member 32 cannot be converted into the circumferential rotation of the circumferential indicating portion 2 at all, that is, the intermediate member 32 idles and the circumferential indicating portion 2 does not move. And the larger the angle between the extending direction of the fourth limiting portion 24 and the moving direction of the intermediate member 32, the larger the rotation amount of the movement of the intermediate member 32 converted into the circumferential rotation of the circumferential indicating portion 2. When the angle between the extending direction of the fourth limiting portion 24 and the moving direction of the intermediate member 32 is 90°, the intermediate member 32 is stuck by the circumferential indicating portion 2 and cannot move. Based on the above analysis, it can be known that the angle between the extending direction of the fourth limiting portion 24 and the moving direction of the intermediate member 32 can be selected between 0° and 90°, but does not include 0° and 90°. Those skilled in the art can select and configure the angle between the extending direction of the fourth limiting portion 24 and the moving direction of the intermediate member 32 according to the actual situation.

[0062] Optionally, one of the third limiting portion 323 and the fourth limiting portion 24 is a second groove, and the other is a second protrusion. The second protrusion is movably embedded in the second groove; the second protrusion and the second groove are matched in size along the direction perpendicular to the extending direction of the fourth limiting portion 24 and are abutted against each other.

[0063] Please refer to Figure 4 、 Figures 6 to 8, in an alternative exemplary embodiment, the third limiting portion 323 is a second protrusion, the fourth limiting portion 24 is a second groove, and the extending direction of the second groove is parallel to the axis A. The second protrusion is movably inserted into the second groove, and since the dimensions of the second protrusion and the second groove in the direction perpendicular to the extending direction of the fourth limiting portion 24 (which can be understood as the circumferential width of the second groove) are matched, the second protrusion abuts against the side wall of the second groove in the circumferential direction. Thus, the second protrusion is restricted to move only along the extending direction of the second groove (i.e., the axial direction) in the second groove. When the second protrusion rotates spirally with the intermediate member 32, its circumferential component drives the circumferential indicating portion 2 to rotate circumferentially. It can be understood that the axial length L3 of the second groove should be able to cover the axial stroke L2 generated by the spiral movement of the second protrusion with the intermediate member 32 to prevent the second protrusion from disengaging from the second groove.

[0064] It should be noted that, in some embodiments, the third limiting portion 323 may coincide with the second limiting portion 322 on the same structure. For example Figure 4 , Figures 6 to 8 in the exemplary embodiment shown, the second limiting portion 322 is a first protrusion, the third limiting portion 323 is a second protrusion, and the first protrusion and the second protrusion are the same coincident structure, that is, the structure of this protrusion serves as both the second limiting portion 322 and the third limiting portion 323. Of course, in other embodiments, the third limiting portion 323 may be separately provided from the second limiting portion 322.

[0065] In another embodiment, it may also be that the fourth limiting portion 24 is a second protrusion, and the third limiting portion 323 is a second groove. Specifically, the fourth limiting portion 24 is a second protrusion extending axially, and the second protrusion may, for example, protrude inwardly on the inner circumference of the circumferential indicating portion 2. The second groove can be adaptively buckled on the second protrusion and slide along the second protrusion. In this way, the effect of driving the circumferential indicating portion 2 to rotate circumferentially when the intermediate member 32 moves spirally can also be achieved. The principle is similar to that of Figure 4 , Figures 6 to 8 the exemplary embodiment shown, and will not be elaborated here.

[0066] In the above embodiments, the extending direction of the fourth limiting portion 24 is arranged at an angle with the movement direction of the intermediate member 32, and the third limiting portion 323 is movably arranged relative to the fourth limiting portion 24 along the extending direction of the fourth limiting portion 24. It can be understood that, in other embodiments, it may also be that the extending direction of the third limiting portion 323 is arranged at an angle with the movement direction of the intermediate member 32, and the fourth limiting portion 24 is movably arranged relative to the third limiting portion 323 along the extending direction of the third limiting portion 323. For example, the third limiting portion 323 is a second groove extending axially, and the fourth limiting portion 24 is a second protrusion, and a similar effect can also be achieved.

[0067] It should be noted that the third limiting part 323 and the fourth limiting part 24 are not limited to the combination of a protrusion and a groove. In some other embodiments, the third limiting part 323 and the fourth limiting part 24 can also be structures such as mutually cooperating steps that achieve limiting through mutual contact and abutment, or can be structures such as magnets that achieve limiting without contact by magnetic attraction. Those skilled in the art can understand and configure according to the prior art, and this embodiment will not be elaborated further.

[0068] Please refer to Figure 9 and, in combination with reference to Figure 2 Optionally, the rotating shaft 31 is connected to the bending wire connecting part 4 through a second threaded connection; when the rotating shaft 31 rotates circumferentially, the bending wire connecting part 4 is driven to move along the direction of the axis A through the second thread. In an alternative exemplary embodiment, the rotating shaft 31 has a through inner cavity along the direction of the axis A, and the bending wire connecting part 4 is disposed through the inner cavity.

[0069] Optionally, the second thread includes a second internal thread disposed in the inner cavity of the rotating shaft 31 and a second external thread 41 disposed on the outer periphery of the bending wire connecting part 4. The second external thread 41 cooperates with the second internal thread, thereby realizing the connection between the rotating shaft 31 and the bending wire connecting part 4 through the second thread.

[0070] Furthermore, the movement direction of the bending wire connecting part 4 is limited to extend along the direction of the axis A. That is to say, when the rotating shaft 31 rotates, through the conversion of the second thread, the bending wire connecting part 4 is driven to move axially, thereby driving the bending wire 6 disposed on the bending wire connecting part 4 to move axially to achieve bending.

[0071] Preferably, please refer to Figure 5 , (axial length of the second internal thread) / (axial length of the first external thread 311) = (pitch of the second internal thread) / (pitch of the first external thread 311). With such a configuration, the axial stroke L1 of the bending wire connecting part 4 can be matched with the axial stroke L2 of the intermediate member 32, and a situation where, for example, the bending wire connecting part 4 is still moving axially while the intermediate member 32 has already completed its stroke and is jammed will not occur.

[0072] Optionally, the bending control wire connecting portion 4 includes a stranded wire rod 42 and a wire pressing assembly 43; the stranded wire rod 42 is used for coiling the bending control wire 6, and the wire pressing assembly 43 is used for fixing the bending control wire 6 after it winds around the stranded wire rod 42; wherein the axial direction of the stranded wire rod 42 is arranged at an angle to the axis A, and the wire pressing and fixing direction of the wire pressing assembly 43 is parallel to the axis A. After the proximal end of the bending control wire 6 passes through the catheter 71, it first coils around the stranded wire rod 42, and then extends to the wire pressing assembly 43 to be pressed and fixed. With such a configuration, through the buffering of the stranded wire rod 42, the stress on the bending control wire 6 can be reduced, and the stress concentration at the connection between the wire pressing assembly 43 and the bending control wire 6 can be reduced. Preferably, the bending control wire connecting portion 4 further includes a protective sleeve 44, and the protective sleeve 44 is sleeved outside the section of the bending control wire 6 corresponding to the wire pressing assembly 43 to protect the bending control wire 6 and reduce or avoid damage to the bending control wire 6 when it is tightly fixed by the wire pressing assembly 43.

[0073] Optionally, in some embodiments, the bending control wire connecting portion 4 includes a threaded section 45 and a follow-up section 46, the second external thread 41 is provided on the threaded section 45, and the stranded wire rod 42, the wire pressing assembly 43 and the protective sleeve 44 are all provided on the follow-up section 46. The threaded section 45 and the follow-up section 46 can be axially abutted and connected, or can be fixedly connected, and the present embodiment is not limited thereto.

[0074] Optionally, please refer to Figure 2 and Figure 3 , the bending control handle includes a plurality of balls 8 arranged circumferentially around the axis A, and the rotating shaft 31 is connected to the base 50 through the plurality of balls 8 along the direction of the axis A. When the rotating shaft 31 is driven by the driving portion 1 to rotate circumferentially, on the one hand, its axial position needs to be limited, and on the other hand, the rotating shaft 31 will also receive an axial reaction force from the bending control wire connecting portion 4 and the intermediate member 32, so there will be a certain axial force between it and the base 50. The setting of the balls 8 enables a rolling friction to be formed between the rotating shaft 31 and the base 50, which can greatly improve the transmission efficiency, reduce the work loss during the bending control process, and reduce the operating torque and noise.

[0075] Preferably, the transmission ratio between the driving portion 1 and the circumferential indicating portion 2 is greater than 1. The transmission from the driving portion 1 to the circumferential indicating portion 2 can be understood as a speed reduction transmission. When the knob 11 rotates by a certain angle, the rotation angle of the circumferential indicating portion 2 is smaller than the rotation angle of the knob 11. With such a configuration, it is beneficial to reduce the rotation amount of the circumferential indicating portion 2, reduce the area of the observation window 52, further reduce the space occupied by the indicating function, and is beneficial to arranging more other functions on the bending control handle.

[0076] It can be understood that the transmission ratio between the driving part 1 and the circumferential indicating part 2, and the predetermined proportional relationship between the axial movement amount of the bending control wire connecting part 4 and the circumferential rotation amount of the circumferential indicating part 2 can be adjusted according to the influence of multiple factors. Specifically, it includes the ratio of the pitch of the second thread to the first thread, the movement direction of the intermediate member 32, and the angle between the extending direction of the fourth limiting part 24 and the movement direction of the intermediate member 32. Adjusting any one of them can achieve the adjustment of the transmission ratio between the driving part 1 and the circumferential indicating part 2, as well as the adjustment of the predetermined proportional relationship.

[0077] Based on the above-mentioned bending control handle, an embodiment of the present invention further provides an intervention system, which includes the above-mentioned bending control handle; the intervention system further includes a bending control wire 6, and the bending control wire 6 is connected to the bending control wire connecting part 4 and moves along the direction of the axis A under the drive of the bending control wire connecting part 4. Optionally, the intervention system further includes components such as a catheter 71 or a guide wire, etc. For details, please refer to the prior art, and this embodiment will not be elaborated herein. The application fields of the intervention system provided in this embodiment include, for example, cardiac valve intervention treatment, etc., and the present invention is not limited thereto.

[0078] In summary, in the bending control handle and the intervention system provided by the present invention, the bending control handle includes: a driving part, a circumferential indicating part, a transmission part, and a bending control wire connecting part; the bending control handle has an axis; the driving part and the circumferential indicating part are respectively circumferentially rotatably arranged around the axis, and the bending control wire connecting part is axially movably arranged along the axis; the circumferential rotation of the driving part is converted into the axial movement of the bending control wire connecting part along the axis through the transmission part, and the circumferential rotation of the driving part is also converted into the circumferential rotation of the circumferential indicating part through the transmission part; wherein, there is a predetermined proportional relationship between the axial movement amount of the bending control wire connecting part along the axis and the circumferential rotation amount of the circumferential indicating part along the circumference. With such a configuration, the bending control wire connecting part can be driven to move along the axis by the driving part, and at the same time, the circumferential indicating part is driven to rotate circumferentially, so as to indicate the stroke of the bending control wire connecting part through the circumferential indicating part. Further, since the circumferential indicating part realizes the indication through circumferential movement, it occupies less space and provides space for the arrangement of other components of the bending control handle.

[0079] It should be noted that the above-mentioned several embodiments can be combined with each other. The above description is only a description of the preferred embodiments of the present invention, and does not limit the scope of the present invention in any way. Any changes and modifications made by those of ordinary skill in the field of the present invention based on the above disclosure shall fall within the protection scope of the claims.

Claims

1. A bending control handle, characterized in that, Comprising: A driving part, a circumferential indicating part, a transmission part and a deflecting wire connecting part; the deflecting handle has an axis; the driving part and the circumferential indicating part are respectively arranged to be circumferentially rotatable around the axis, and the deflecting wire connecting part is arranged to be movable along the direction of the axis; The circumferential rotation of the driving part is converted into the movement of the deflecting wire connecting part along the direction of the axis through the transmission part, and the circumferential rotation of the driving part is also converted into the circumferential rotation of the circumferential indicating part through the transmission part; Wherein, there is a predetermined proportional relationship between the movement amount of the deflecting wire connecting part along the direction of the axis and the rotation amount of the circumferential indicating part along the circumferential direction; The transmission part includes a rotating shaft and an intermediate member; the rotating shaft is connected to the driving part, the rotating shaft is arranged to be circumferentially rotatable around the axis under the drive of the driving part, and the rotating shaft is connected to the intermediate member by a first thread connection; The movement direction of the intermediate member is restricted to extend spirally around the axis, the intermediate member is movably connected to the circumferential indicating part along the direction of the axis, and the position of the intermediate member relative to the circumferential indicating part along the circumferential direction is defined; When the rotating shaft rotates circumferentially, the intermediate member is driven to move spirally around the axis through the first thread, and the spiral movement of the intermediate member drives the circumferential indicating part to rotate circumferentially; The deflecting wire connecting part includes a stranded wire rod and a wire pressing assembly; the stranded wire rod is used for winding the deflecting wire, and the wire pressing assembly is used for fixing the deflecting wire after winding around the stranded wire rod; wherein the axis of the stranded wire rod is arranged at an angle to the axis, and the wire pressing and fixing direction of the wire pressing assembly is parallel to the axis.

2. The bending control handle according to claim 1, characterized in that, The deflecting handle further includes a first limiting part, and the intermediate member includes a second limiting part; The first limiting part extends spirally around the axis, and the second limiting part is arranged to be movable relative to the first limiting part along the extending direction of the first limiting part; or, the second limiting part extends spirally around the axis, and the first limiting part is arranged to be movable relative to the second limiting part along the extending direction of the second limiting part; When the intermediate member moves along the direction of the axis under the drive of the rotating shaft, based on the transmission conversion between the first limiting part and the second limiting part, a circumferential rotation is synchronously generated to form a spiral movement.

3. The bending control handle according to claim 2, characterized in that, One of the first limiting part and the second limiting part is a first groove, and the other is a first protrusion, and the first protrusion is movably embedded in the first groove; the first protrusion and the first groove match in size along the direction of the axis and abut against each other.

4. The bending control handle according to claim 1, characterized in that, The intermediate member includes a third limiting part, and the circumferential indicating part includes a fourth limiting part; the position of the circumferential indicating part along the direction of the axis is defined; The extending direction of the fourth limiting part is arranged at an angle with the moving direction of the middle piece, and the third limiting part is movably arranged relative to the fourth limiting part along the extending direction of the fourth limiting part; or, the extending direction of the third limiting part is arranged at an angle with the moving direction of the middle piece, and the fourth limiting part is movably arranged relative to the third limiting part along the extending direction of the third limiting part. When the middle piece moves spirally, based on the transmission conversion between the third limiting part and the fourth limiting part, the circumferential indicating part is driven to rotate circumferentially.

5. The bending control handle according to claim 4, characterized in that, One of the third limiting part and the fourth limiting part is a second groove, and the other is a second protrusion. The second protrusion is movably embedded in the second groove; the second protrusion and the second groove are matched in size along the direction perpendicular to the extending direction of the fourth limiting part and abut against each other.

6. The bending control handle according to claim 1, characterized in that, The rotating shaft has a through inner cavity along the direction of the axis; the middle piece is sleeved outside the rotating shaft, and the bending wire connecting part passes through the inner cavity; the circumferential indicating part is sleeved outside the middle piece.

7. The bending control handle according to claim 1, characterized in that, The transmission part includes a rotating shaft, the rotating shaft is connected with the driving part, the rotating shaft is circumferentially rotatably arranged under the drive of the driving part, and the rotating shaft is connected with the bending wire connecting part through a second thread connection; when the rotating shaft rotates circumferentially, the bending wire connecting part is driven to move along the direction of the axis through the second thread.

8. The bending control handle according to claim 1, characterized in that, The transmission part includes a rotating shaft; the rotating shaft is connected with the driving part, and the rotating shaft is circumferentially rotatably arranged under the drive of the driving part; the bending control handle includes a base and a plurality of balls arranged circumferentially around the axis, and the rotating shaft is connected with the base through the plurality of balls along the direction of the axis.

9. The bending control handle according to claim 1, characterized in that, The bending control handle includes a housing, the housing is provided with an observation window arranged circumferentially, and the circumferential indicating part is located inside the housing and within the coverage area of the observation window.

10. The bending control handle according to claim 1, characterized in that, The transmission ratio between the driving part and the circumferential indicating part is greater than 1.

11. An interventional system, characterized in that, It includes the bending control handle according to any one of claims 1 to 10; the intervention system further includes a bending wire, the bending wire is connected with the bending wire connecting part, and moves along the direction of the axis under the drive of the bending wire connecting part.

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