Curve control handle and intervention system

Abstract

The present invention provides a curve control handle and an intervention system. The curve control handle comprises a drive unit, a circumferential indicator unit, a transmission unit, and a curve control wire connection unit. The curve control handle defines an axis. Both the drive unit and the circumferential indicator unit are configured to rotate circumferentially about the axis, and the curve control wire connection unit is configured to translate along the axis. The transmission unit is configured to convert the circumferential rotation of the drive unit into both the translation of the curve control wire connection unit along the axis and the circumferential rotation of the circumferential indicator unit. The amount of movement of the curve control wire connection unit along the axis is in a predetermined ratio to the amount of circumferential rotation of the circumferential indicator unit. With this arrangement, the circumferential indicator unit can display information only through its circumferential movement, and space can be saved for the arrangement of other components of the curve control handle.

Description

Technical Field

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

Background Art

[0002] Interventional therapy is a completely new treatment technology developed overseas in recent years, which enables minimally invasive treatment based on the progress of modern high-tech. This involves introducing special and delicate instruments into the patient's body under the guidance of a medical imaging diagnostic device and performing diagnosis and local treatment on the target lesion site there. This procedure has various advantages such as minimally invasive, rapid recovery, and good treatment results, and can minimize the invasion to the patient by conventional surgery.

[0003] An intervention system usually consists of two components: a catheter and a handle. The catheter is configured for insertion into the patient's body, and in order to ensure sufficient safety and efficiency, a handle that functions as the power source and the operation / control means for the entire interventional therapy is required. To facilitate the delivery of the interventional instrument through the tortuous blood vessels, a steerable catheter provided with a bending control wire that can bend the tip of the catheter in any direction for steering has been developed. The bending control wire extending within the catheter is coupled to a handle for the operation of the wire. However, since the bending control wire is usually hidden within the handle, it is difficult to know the exact amount of its translational movement, which may lead to inaccurate operations.

Summary of the Invention

[0004] An object of the present invention is to provide a bending control handle and an intervention system that overcome the problem of difficulty in knowing the exact amount of translational movement of the bending control wire in a conventional steerable catheter.

[0005] To solve the above technical problems, the present invention provides a curved control handle including a drive unit, a circumferential direction indicator unit, a transmission unit, and a curved control wire connection unit. The curved control handle defines an axis. The drive unit and the circumferential direction indicator unit are both configured to be rotatable in the circumferential direction about the axis, and the curved control wire connection unit is configured to be translatable along the axis.

[0006] The transmission unit is configured to convert the circumferential rotation of the drive unit into both axial translation of the curved control wire connection unit along the axis and circumferential rotation of the circumferential indicator unit.

[0007] The amount of movement along the axis of the curve control wire connection is in a predetermined ratio with respect to the amount of rotation in the circumferential direction of the circumferential direction indicator.

[0008] Optionally, the transmission unit may include a rotating shaft and an intermediate member, the rotating shaft being connected to a drive unit so as to be circumferentially rotatable about an axis under the drive of the drive unit, and the rotating shaft engaging with the intermediate member via a first thread, The intermediate member is restricted to spiral motion around its axis, and its position in the circumferential direction relative to the circumferential indicator is constrained, while it is movably connected to the circumferential indicator along its axis. The circumferential rotation of the rotating shaft causes the intermediate member to undergo helical motion around its axis under the action of the first screw thread, thereby generating circumferential rotation of the circumferential indicator.

[0009] Optionally, the curved control handle may further include a first stopping means, and the intermediate member may include a second stopping means. The first stopping means may extend spirally around an axis, and the second stopping means may be positioned to move relative to it along the extension of the first stopping means, or the second stopping means may extend spirally around an axis, and the first stopping means may be positioned to move relative to it along the extension of the second stopping means. The helical motion of the intermediate member consists of axial translation generated by the rotating shaft and circumferential rotation generated based on the transmission conversion between the power transmission unit and the first and second stopping means.

[0010] Optionally, one of the first and second stopping means may be a first recess, and the other may be a first projection movably engaged with the first recess, wherein the dimensions along the axis of the first projection and the first recess coincide so as to maintain contact with each other.

[0011] Optionally, the intermediate member may include a third stopping means, and the circumferential indicator may include a fourth stopping means and be fixed in a position along the axis. The fourth stopping means is configured to extend at an angle with respect to the direction of movement of the intermediate member, and the third stopping means is configured to be movable relative to the fourth stopping means along the direction of extension of the fourth stopping means, or the third stopping means is configured to extend at an angle with respect to the direction of movement of the intermediate member, and the fourth stopping means is configured to be movable relative to the third stopping means along the direction of extension of the third stopping means. The circumferential rotation of the circumferential indicator arises from the helical motion of the intermediate member, based on the transmission conversion between the power transmission unit and the third and fourth stopping means.

[0012] Optionally, one of the third and fourth stopping means can be a second recess, and the other can be a second projection that movably engages with the second recess, and the second projection and the second recess are of the same size in a direction perpendicular to the extending direction of the fourth stopping means so as to maintain contact with each other.

[0013] Optionally, the rotating shaft may define a lumen that extends through its axis, in which case the intermediate member is located on the rotating shaft, the curvature control wire connection is located within the lumen, and the circumferential indicator is located on the intermediate member.

[0014] Optionally, the transmission unit may include a rotating shaft, which is coupled to a drive unit, thereby enabling circumferential rotation under the drive of the drive unit, where the rotating shaft engages with the curve control wire connector via a second thread, and its circumferential rotation causes axial translation of the curve control wire connector under the action of the second thread.

[0015] Optionally, the transmission unit may include a rotating shaft that is coupled to the drive unit and is circumferentially rotatable by the drive, the curved control handle includes a base and a plurality of balls arranged circumferentially around an axis, and the rotating shaft is coupled to the base along the axis via the plurality of balls.

[0016] Optionally, the curvature control wire connection may include a wire winding post and a wire pressing assembly, wherein the wire winding post is configured to wind a curvature control wire, and the wire pressing assembly is configured to hold the curvature control wire after it has passed around the wire winding post and has been unwound from the wire winding post, the axial direction of the wire winding post forms an angle with the axis, and the wire pressing assembly compresses and holds the curvature control wire in a direction parallel to the axis.

[0017] Optionally, the curvature control handle may include a housing with a circumferentially extending observation window, and the circumferential display unit is positioned within the housing within the range of the observation window.

[0018] Optionally, the transmission ratio from the drive unit to the circumferential display unit may be greater than 1.

[0019] For the purposes described above, the present invention also provides an intervention system comprising the curve control handle and the curve control wire as defined above, wherein the curve control wire is fixed to a curve control wire connector, and thereby can be axially translated by driving the curve control wire connector.

[0020] In summary, the present invention provides a curve control handle and an intervention system. The curve control handle includes a drive unit, a circumferential indicator unit, a transmission unit, and a curve control wire connection unit. The curve control handle defines an axis. The drive unit and the circumferential indicator unit are both configured to be rotatable in the circumferential direction about the axis, and the curve control wire connection unit is configured to be translatable along the axis. The transmission unit is configured to convert the circumferential rotation of the drive unit into both axial translation of the curve control wire connection unit and circumferential rotation of the circumferential indicator unit. The amount of movement of the curve control wire connection unit along the axis is in a predetermined ratio to the amount of circumferential rotation of the circumferential indicator unit.

[0021] This configuration allows the drive unit to be operated to translate the curvature control wire connection along the axis while simultaneously rotating the circumferential display unit in the circumferential direction. At the same time, the circumferential display unit can display the translational momentum of the curvature control wire connection unit. Furthermore, since the circumferential display unit displays information simply by its circumferential movement, space can be saved in the arrangement of other components of the curvature control handle. [Brief explanation of the drawing]

[0022] Anyone with ordinary skill in the art will understand that the following drawings are provided to facilitate a better understanding of the invention and are not intended to limit its scope in any way. [Figure 1] Figure 1 is a schematic diagram of a curved control handle according to an embodiment of the present invention. [Figure 2] Figure 2 is a schematic cross-sectional view along the axis of a curved control handle according to an embodiment of the present invention. [Figure 3] Figure 3 schematically shows a rotating shaft and base according to an embodiment of the present invention. [Figure 4] Figure 4 schematically shows the first and second stopping means according to an embodiment of the present invention. [Figure 5]FIG. 5 is a diagram schematically showing the translational momentum of the bending control wire connection part and the intermediate member according to an embodiment of the present invention. [Figure 6] FIG. 6 is a diagram schematically showing the moving direction of the intermediate member according to an embodiment of the present invention. [Figure 7] FIG. 7 is a schematic view of the circumferential direction display part according to an embodiment of the present invention. [Figure 8] FIG. 8 is a schematic diagram showing the moving direction of the circumferential direction display part according to an embodiment of the present invention. [Figure 9] FIG. 9 is a schematic view of the bending control wire connection part according to an embodiment of the present invention.

MODE FOR CARRYING OUT THE INVENTION

[0023] The objects, advantages, and features of the present invention will become more apparent by reading the following detailed description of its specific embodiments in conjunction with reference to the accompanying drawings. The figures are for the sole purpose of explaining the embodiments of the present invention in a more convenient and clear manner, and are not necessarily drawn to an exact scale, but are shown in a very simplified form. In addition, the structures drawn are generally a part of the actual objects. In particular, since the figures tend to have different points of emphasis, they are sometimes drawn to different scales.

[0024] In this specification, the singular forms "a," "an," and "the" are used to include plural nouns. The term "or" is generally used to mean "and / or." Similarly, quantitative expressions such as "a number of," "at least one," "at least two," and "two or more" are used in a similarly comprehensive sense. Furthermore, the use of the terms "first," "second," and "third" in this specification is for illustrative purposes only and should not be interpreted as indicating or suggesting relative importance, nor as implicitly referring to a numerical value. Therefore, defining an item as "first," "second," or "third" explicitly or implicitly indicates that there is one or at least two such items. In this specification, the terms "one end" and "the other end," as well as "proximal end" and "distal end," may be used to generally refer to the end-side portion located on opposite sides of an end, rather than referring only to the end itself. In this specification, the terms “proximal end” and “distal end” may be used in reference to an interventional system, where one end is inserted into the patient’s body (e.g., provided by a maneuverable catheter) and the other end extends outside the body for manipulation (e.g., provided by a curved control handle). In this regard, when used in reference to a component, the term “proximal end” may refer to a location on the component closer to the operating end of the interventional system that extends outside the patient’s body, and the term “distal end” may refer to a location on the component closer to the end of the interventional system inserted into the patient’s body and therefore further from the operating end of the interventional system. The terms “proximal end” and “distal end” may also be used to describe manual manipulation or operations performed by hand. In this sense, “proximal end” and “distal end” may be used in reference to operators, such as surgeons and clinicians. Specifically, when used in reference to a component, the term “proximal end” may refer to a location on that component closer to the operator.On the other hand, the term “distal end” may refer to a position on the component that is closer to the intervention system and therefore farther from the operator. Furthermore, terms such as “attachment,” “joining,” “connection,” and “positioning,” and their variations, as used herein, shall be interpreted broadly. When an element is described as being “positioned” on another element, this generally only means that a relationship of connection, joining, engagement, or transmission exists between them, and such relationship may be direct or indirect, including when one or more elements are interposed, and should not be interpreted as indicating or implying a specific spatial positional relationship between them. That is, unless the context clearly indicates otherwise, the element may be positioned inside, outside, above, below, laterally, or in any other position relative to another element. Those skilled in the art will be able to understand the specific meaning of each of the above terms herein in context. Furthermore, terms indicating direction such as "up," "down," "upper side," "lower side," "upward," "downward," "left," and "right" are used in relation to the illustrative embodiments shown, where the upward or upward direction means the direction toward the upper side of the corresponding figure, and the downward or downward direction means the direction toward the lower side of the corresponding figure.

[0025] The object of the present invention is to provide a bending control handle and interventional system that overcomes the problem in conventional maneuverable catheters where it is difficult to accurately determine the amount of translational motion of the bending control wire.

[0026] As described in the background technology, conventionally, it is difficult to determine the exact amount of translational motion of a curved control wire. Considering that such a curved control wire typically translates along the axis of the curved control handle, a person skilled in the art could add something to the curved control handle that would allow observation or indication of the exact amount of translational motion of the curved control wire. However, this would occupy a considerable amount of space within the curved control handle and affect the arrangement of other components.

[0027] Referring to Figures 1 to 9 from this perspective, the embodiments described herein provide a curve control handle including a drive unit 1, a circumferential indicator unit 2, a transmission unit 3, and a curve control wire connector 4. The curve control handle defines an axis A. The drive unit 1 and the circumferential indicator unit 2 are arranged to be rotatable in the circumferential direction about axis A. The curve control wire connector 4 is also arranged to be translatably along axis A. The transmission unit 3 can convert the circumferential rotation of the drive unit 1 into both the translational motion of the curve control wire connector 4 along axis A and the circumferential rotation of the circumferential indicator unit 2. The amount of movement of the curve control wire connector 4 along axis A is in a predetermined ratio to the amount of circumferential rotation of the circumferential indicator unit 2. This predetermined ratio can be arbitrarily determined. Preferably, the predetermined ratio can be changed linearly.

[0028] This configuration allows the curve control wire connection section 4 to be translated along axis A by operating the drive unit 1. As a result, the circumferential display section 2 displays the amount of translational motion of the curve control wire connection section 4, and at the same time, the circumferential display section 2 rotates in the circumferential direction. Since the circumferential display section 2 displays information simply by its circumferential movement, space is saved in the arrangement of other components of the curve control handle.

[0029] The proposed curved control handle will be explained below with examples, referring to the attached drawings. For the sake of clarity, the term "axial direction" will be used below to refer to the direction along axis A.

[0030] Referring to Figures 1, 2, and 4, in an optional embodiment, the curvature control handle includes a housing 51 and a base 50. The base 50 is axially positioned and partially housed within the housing 51, while partially extending outside the housing 51. The base 50 defines an axially extending lumen (opening), and the curvature control wire connection portion 4 is provided within the lumen. Part of the transmission portion 3 is housed within the lumen of the base 50, while the remainder remains outside the base 50. The circumferential indicator portion 2 is positioned on the outer circumference of the base 50.

[0031] Furthermore, the housing 51 is provided with an observation window 52 that extends in the circumferential direction, and the circumferential display unit 2 is positioned within the range of the observation window 52 in the housing 51. Therefore, the circumferential rotation of the circumferential display unit 2 is visually visible through the observation window 52. The observation window 52 can optionally be a through-slot and may be covered with a piece of transparent material. Alternatively, the housing 51 may be made entirely or partially of transparent material. In this case, the observation window 52 may be integral with the rest of the housing 51 or be part of it. Preferably, the circumferential display unit 2 includes markers such as pointers or scales, and the housing 51 is provided with circumferentially spaced scale lines. These scale lines cooperate with the markers to display the amount of circumferential rotation of the circumferential display unit 2.

[0032] Referring together to Figures 2 and 9, in one exemplary embodiment, the bending control handle is further connected to the catheter 71. The catheter 71 may be implemented as a conventional maneuverable catheter without departing from the scope of the present invention. The catheter 71 may be connected to the base 50, for example, by a catheter connector 72. The bending control wire connector 4 is for connecting the proximal end of the bending control wire 6. The distal end of the bending control wire 6 enters the catheter 71 and extends distally. This arrangement allows for axial translation of the bending control wire 6 by moving the bending control wire connector 4 axially, thereby enabling bending and maneuvering of the catheter 71.

[0033] Optionally, referring to Figures 2 to 6, the transmission unit 3 may include a rotating shaft 31 and an intermediate member 32. The rotating shaft 31 is connected to the drive unit 1. The rotating shaft 31 is circumferentially rotatable about axis A by the drive unit 1. The rotating shaft 31 and the intermediate member 32 mesh with each other via a first thread. The movement of the intermediate member 32 is limited to helical motion about axis A. The intermediate member 32 is movably connected to the circumferential indicator unit 2 along axis A. The circumferential position of the intermediate member 32 relative to the circumferential indicator unit 2 is fixed. The circumferential rotation of the rotating shaft 31 causes the intermediate member 32 to helically move about axis A due to the action of the first thread. The helical motion of the intermediate member 32 causes the circumferential indicator unit 2 to rotate circumferentially.

[0034] In one arbitrary embodiment, the drive unit 1 includes a knob 11. The knob 11 is coaxially coupled to the rotating shaft 31, and by turning the knob 11, the rotating shaft 31 can be rotated circumferentially about axis A. The intermediate member 32 is provided as a cylindrical member positioned on the outer circumference of the rotating shaft 31. The first thread 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. Engagement between the rotating shaft 31 and the intermediate member 32 via the first thread can be achieved by the meshing of the first external thread 311 and the first internal thread.

[0035] As described above, the movement of the intermediate member 32 is limited to helical motion around axis A. This helical motion is the result of the rotation of the rotating shaft 31 being converted by the first screw thread. This helical motion of the intermediate member 32 around axis A consists of an axial component and a circumferential component. Since the intermediate member 32 is movably coupled to the circumferential display unit 2 along the axis, the axial component of the helical motion of the intermediate member 32 is canceled out by the axial motion of the intermediate member 32 relative to the circumferential display unit 2. On the other hand, since the position of the intermediate member 32 in the circumferential direction relative to the circumferential display unit 2 is constrained, the circumferential component of the helical motion of the intermediate member 32 rotates the circumferential display unit 2 in the circumferential direction and displays the information.

[0036] Optionally, the curved control handle may be equipped with a first stopping means 53, and the intermediate member 32 may be equipped with a second stopping means 322. The first stopping means 53 may extend spirally around axis A, and the second stopping means 322 may be positioned to be movable relative to the first stopping means 53 along the direction of extension of the first stopping means 53. Alternatively, the second stopping means 322 may extend spirally around axis A, and the first stopping means 53 may be positioned to be movable relative to the second stopping means 322 along the extension of the second stopping means 322. When the intermediate member 32 is driven by the rotating shaft 31 to move along axis A, the first stopping means 53 and the second stopping means 322 interact with each other to provide a power transmission and transmission conversion, generating simultaneous circumferential rotation of the intermediate member 32. This generates the helical motion shown by the arrow in Figure 6.

[0037] The first stopping means 53 and the second stopping means 322 are combined to work together, restricting the intermediate member 32 to helical motion along axis A. Preferably, the first stopping means 53 is fixed to the housing 51 or formed integrally with the housing 51. In some embodiments, the first stopping means 53 may be a track that extends helically around axis A. In these embodiments, the fact that the second stopping means 322 is movable along the extending direction of the first stopping means 53 means that the second stopping means 322 can move only in the extending direction of the first stopping means 53 without deviating from the extending range of the first stopping means 53, like a vehicle traveling on a track. In this way, the movement of the intermediate member 32 can be restricted as described above.

[0038] Optionally, one of the first stopping means 53 and the second stopping means 322 may be a first recess and the other a first projection movably engaged with the first recess. Along axis A, the first projection and the first recess may be sized to maintain contact with each other. Referring to Figure 4, in one arbitrary embodiment, the intermediate member 32 is movably positioned within the lumen of the base 50. Furthermore, the first stopping means 53 is a helical slot formed in the base 50, into which the first projection movably fits into the first recess. Furthermore, the axial dimension of the first projection is matched with the axial dimension of the first recess (which can be considered the axial width of the first recess) so that the first projection remains in contact with the axially opposing side wall of the first recess. This arrangement restricts the movement of the first projection to movement along the extending direction of the first recess, and therefore restricts the movement of the intermediate member 32 to helical movement within the first recess.

[0039] In an alternative embodiment, the first stopping means 53 is a first projection, and the second stopping means 322 is a first recess. In particular, the first stopping means 53 (i.e., the first projection) may extend in a spiral shape and, for example, rise toward the lumen of the base 50. Furthermore, the axial width of the first recess matches the axial width of the first projection. This allows the first projection to fit snugly into the first recess and slide within it. This arrangement may also limit the movement of the intermediate member 32 to a spiral motion as described above.

[0040] In all of the embodiments described above, the first stopping means 53 extends spirally around axis A, and the second stopping means 322 is provided within or on the first stopping means 53 and is movable along the direction of extension of the first stopping means 53. In other embodiments, it is understood that the second stopping means 322 of the intermediate member 32 extends spirally around axis A, and the first stopping means 53 is provided within or on the second stopping means 322 and is movable along the direction of extension of the second stopping means 322. For example, the second stopping means 322 may be configured as a first recess and extend spirally, and the first stopping means 53 may be configured as a first projection. This arrangement provides similar effects.

[0041] It should be noted that the first stopping means 53 and the second stopping means 322 are not limited to being configured as a pair of protrusions / recesses. In some alternative embodiments, the first stopping means 53 and the second stopping means 322 may be structures that can provide a limiting function by mutual contact and abutment, such as a pair of complementary steps. Alternatively, they may be structures that can provide a limiting function without contact by magnetic attraction (e.g., magnets). For example, the first stopping means 53 may be a spirally extending iron rod, and the second stopping means 322 may be a magnet positioned opposite the first stopping means 53. According to such embodiments, the movement of the intermediate member 32 can also be restricted as described above. Those skilled in the art will be able to understand the above embodiments and other embodiments that enable the above functions based on the general knowledge known in the art, so further explanation in this regard is omitted.

[0042] Referring to Figures 4 to 8, optionally, the intermediate member 32 may include a third stopping means 323, and the circumferential indicator unit 2 may include a fourth stopping means 24. The circumferential indicator unit 2 is fixed in a position along axis A. The fourth stopping means 24 may extend at an angle with respect to the movement of the intermediate member 32, and the third stopping means 323 may be movable relative to the fourth stopping means 24 along its extension. Alternatively, the third stopping means 323 may extend at an angle with respect to the movement of the intermediate member 32, and the fourth stopping means 24 may be configured to be movable relative to the third stopping means 323 along the direction of extension. When the intermediate member 32 performs helical motion, the third stopping means 323 and the fourth stopping means 24 interact to provide a power transmission unit and transmission converter for generating circumferential rotation of the circumferential indicator unit 2.

[0043] The third stopping means 323 and the fourth stopping means 24 work together in a pair to cancel out the axial component of the helical motion of the intermediate member 32, while enabling the circumferential rotation of the circumferential indicator 2 as a result of the helical motion of the intermediate member 32. Referring to Figures 7 and 8, in any one embodiment, the circumferential indicator 2 is cylindrical and positioned outward along the axial direction of the base 50, and therefore above the intermediate member 32. That is, the circumferential indicator 2 is positioned on the intermediate member 32, with the base 50 positioned between them. Of course, in some other embodiments, the base 50 may cover only a portion of the intermediate member 32, and the circumferential indicator 2 is instead positioned directly on the outer surface of the remaining portion of the intermediate member 32. That is, it is also possible to position the circumferential indicator 2 directly on the outer surface of the intermediate member 32.

[0044] In some embodiments, the fourth stopping means 24 extends at an angle to the movement of the intermediate member 32, and the third stopping means 323 moves helically together with the intermediate member 32. Therefore, it moves at an angle to the direction of extension of the fourth stopping means 24. The helical motion of the third stopping means 323 consists of a first component parallel to the direction of extension of the fourth stopping means 24 and a second component perpendicular to the direction of extension of the fourth stopping means 24. Since the third stopping means 323 can move along the direction of extension of the fourth stopping means 24, the first component cancels out, and the movement of the intermediate member 32 relative to the circumferential indicator 2 remains unchanged. On the other hand, the second component moves the circumferential indicator 2. Furthermore, since the circumferential indicator 2 is fixed in a position along its axis, only circumferential rotation is possible. It is understood that the circumferential indicator unit 2 can be biased to rotate circumferentially by the third stopping means 323, as long as the fourth stopping means 24 extends at an angle to the movement of the intermediate member 32. The smaller the angle at which the fourth stopping means 24 extends relative to the movement of the intermediate member 32, the smaller the amount of circumferential rotation of the circumferential indicator unit 2 due to the movement of the intermediate member 32. When the fourth stopping means 24 extends at an angle of 0° relative to the movement of the intermediate member 32, the circumferential indicator unit 2 does not rotate circumferentially at all even when the intermediate member 32 moves. That is, the intermediate member 32 spins freely without causing circumferential rotation of the circumferential indicator unit 2. Conversely, the larger the angle at which the fourth stopping means 24 extends relative to the movement of the intermediate member 32, the greater the amount of circumferential rotation of the circumferential indicator unit 2 caused by the movement of the intermediate member 32. When the fourth stopping means 24 extends at an angle of 90° relative to the movement of the intermediate member 32, the intermediate member 32 comes into contact with the circumferential indicator 2, preventing any movement. From the above analysis, it will be understood that the angle at which the fourth stopping means 24 extends relative to the movement of the intermediate member 32 can be selected between 0° and 90°, but cannot be selected as either 0° or 90°. A person skilled in the art can appropriately select the angle at which the fourth stopping means 24 extends relative to the direction of movement of the intermediate member 32 as needed.

[0045] Optionally, one of the third stopping means 323 and the fourth stopping means 24 may be a second recess, and the other may be a second projection that is movably engaged with the second recess. The second projection and the second recess can be made to have dimensions perpendicular to the extending direction of the fourth stopping means 24, thereby maintaining contact with each other.

[0046] Referring to Figures 4 and 6-8, in any one embodiment, the third stopping means 323 is the second projection, and the fourth stopping means 24 is the second recess. The second recess extends parallel to axis A, and the second projection is movably housed within the second recess. Furthermore, the dimensions of the second projection, measured perpendicular to the extending direction of the fourth stopping means 24, coincide with the dimensions of the second recess, measured in the same direction (which can be considered the circumferential width of the second recess), so that the second projection fits between the circumferentially opposing side walls of the second recess. This arrangement restricts the movement of the second projection, together with the intermediate member 32, to a helical motion along the extending direction (i.e., axial direction) of the second recess, with its circumferential component causing circumferential rotation of the circumferential indicator 2. It is understood that the axial length L3 of the second recess should accommodate the maximum possible amount L2 of co-direction translational motion of the second projection caused by the helical motion of the intermediate member 32, in order to prevent the second projection from falling out of the second recess.

[0047] It should be noted that in some embodiments, the third stopping means 323 and the second stopping means 322 may be the same stopping means. For example, in the exemplary embodiments shown in Figures 4 and 6-8, the second stopping means 322, i.e., the first projection, and the third stopping means 323, i.e., the second projection, may be the same projection that functions as both the second stopping means 322 and the third stopping means 323. Of course, in alternative embodiments, the third stopping means 323 and the second stopping means 322 may be separate structures.

[0048] In the alternative embodiment, the fourth stopping means 24 is a second projection, and the third stopping means 323 is a second recess. Specifically, in this alternative embodiment, the fourth stopping means 24, i.e., the second projection, may extend along the axis, and the second projection may, for example, protrude inward from the inner circumference of the circumferential indicator 2. The second projection can be slidably received within the second recess. This allows for circumferential rotation of the circumferential indicator 2 by the helical motion of the intermediate member 32, similar to the exemplary embodiments in Figures 4 and 6-8. Therefore, further explanation of this point is omitted herein.

[0049] In all the embodiments described above, the fourth stopping means 24 extends at an angle to the movement of the intermediate member 32, and the third stopping means 323 is configured to be movable relative to the fourth stopping means 24 along the direction of extension of the fourth stopping means 24. It is also understood that in some other embodiments, the third stopping means 323 may extend at an angle to the movement of the intermediate member 32, and the fourth stopping means 24 may be configured to be movable relative to the third stopping means 323 along the direction of extension of the third stopping means 323. For example, the third stopping means 323 may be configured as a second recess extending in the axial direction, and the fourth stopping means 24 may be configured as a second projection. A similar effect can be obtained with this arrangement as well.

[0050] It should be noted that the third stopping means 323 and the fourth stopping means 24 are not limited to being configured as a pair of convex / concave portions. In some alternative embodiments, the third stopping means 323 and the fourth stopping means 24 may be structures that can exert their limiting function by mutual contact and abutment, such as a pair of complementary stepped portions. Alternatively, these stopping means may be structures that can provide a limiting function without touch by magnetic attraction, such as magnets. Those skilled in the art will be able to understand the above-mentioned embodiments and other embodiments that enable the above-mentioned functions based on common technical knowledge in the art, so further explanation in this regard is omitted herein.

[0051] Referring to Figure 9, and in conjunction with Figure 2, the rotating shaft 31 can optionally engage with the curvature control wire connector 4 via a second screw, thereby biasing the curvature control wire connector 4 to move along axis A under the action of the second screw as a result of the circumferential rotation of the rotating shaft 31. In one optional embodiment, the rotating shaft 31 defines a lumen extending along axis A, and the curvature control wire connector 4 is positioned within the lumen.

[0052] Optionally, the second thread may include a second internal thread provided within the lumen of the rotating shaft 31 and a second external thread 41 provided on the outer circumference of the bending control wire connector 4. Engagement between the rotating shaft 31 and the bending control wire connector 4 via the first thread can be achieved by the meshing of the second external thread 41 and the second internal thread.

[0053] Furthermore, the movement of the curvature control wire connection part 4 is limited to translational motion along axis A. In other words, the rotation of the rotating shaft 31 can be converted by the second screw thread into axial translation of the curvature control wire connection part 4, and consequently into axial translation of the curvature control wire 6 fixed to the curvature control wire connection part 4, thereby enabling curvature and steering.

[0054] Preferably, referring to Figure 5, the axial length ratio of the second internal thread to the first external thread 311 is equal to the pitch ratio of the second internal thread to the first external thread 311. This allows the curvature control wire connector 4 to translate axially by a distance L1 that matches the axial translation distance L2 of the intermediate member 32, preventing, for example, the intermediate member 32 from reaching the limit of axial translation before the curvature control wire connector 4 completes its axial translation. In this case, the intermediate member 32 may become jammed.

[0055] Optionally, the curvature control wire connector 4 may include a wire winding post 42 and a wire pressing assembly 43. The wire winding post 42 is configured for winding the curvature control wire 6 thereon, and the wire pressing assembly 43 is configured to hold the curvature control wire 6 after it has passed around the wire winding post 42 and has been unwound from the post. The wire winding post 42 is positioned such that its axis is at an angle to axis A, and the wire pressing assembly 43 compresses and holds the curvature control wire in a direction parallel to axis A. The curvature control wire 6 drawn proximal from the catheter 71 is wound onto the wire winding post 42, and the wire unwound therefrom is compressed and held by the wire pressing assembly 43. This arrangement, buffered by the wire winding post 42, can reduce the stress on the curvature control wire 6 and can alleviate stress concentration in the portion of the curvature control wire 6 held by the wire pressing assembly 43. Preferably, the curvature control wire connector 4 further includes a protective sleeve 44. The protective sleeve 44 is positioned to cover a portion of the curvature control wire 6 corresponding to the wire pressing assembly 43, thereby protecting the curvature control wire 6. This reduces or prevents damage to the curvature control wire 6 when it is compressed and held by the wire pressing assembly 43.

[0056] Optionally, in some embodiments, the curvature control wire connector 4 may include a threaded portion 45 and a driven portion 46. The second external thread 41 may be formed on the threaded portion 45. The wire winding post 42, wire pressing assembly 43, and protective sleeve 44 may all be provided on the driven portion 46. Not limited to these, the threaded portion 45 and the driven portion 46 may simply abut each other along the axis or be fixedly connected to each other.

[0057] Referring to Figures 2 and 3, the bending control handle may include a plurality of balls 8 arranged circumferentially along axis A, and the rotating shaft 31 may be connected to the base 50 via the balls 8 along axis A. The rotating shaft 31 is fixed in position axially and is biased by the bending control wire connector 4 and intermediate member 32 when rotated circumferentially by the drive unit 1. Therefore, it may be subject to axial stress from the base 50. The presence of the balls 8 creates rolling friction between the rotating shaft 31 and the base 50. This significantly improves the efficiency of the transmission and reduces losses, operating torque, and noise during bending and maneuvering.

[0058] Preferably, the transmission ratio from the drive unit 1 to the circumferential display unit 2 is greater than 1. The power transmission unit from the drive unit 1 to the circumferential display unit 2 can be considered a reduction transmission unit. Therefore, when the knob 11 is turned by an angle, the circumferential display unit 2 rotates circumferentially by an angle smaller than that angle. This reduces the amount of rotation of the circumferential display unit 2 and also reduces the area of ​​the observation window 52. Consequently, the space required for the display function is reduced, and additional functions can be incorporated into the curvature control handle.

[0059] The transmission ratio from the drive unit 1 to the circumferential display unit 2, and the predetermined ratio between the axial translation of the curvature control wire connection unit 4 and the circumferential rotation of the circumferential display unit 2, can depend on several factors. In particular, these include the pitch ratio of the second screw thread to the first screw thread, the direction of movement of the intermediate member 32, and the angle that the extending direction of the fourth stopping means 24 makes with respect to the direction of movement of the intermediate member 32. That is, the transmission ratio from the drive unit 1 to the circumferential display unit 2 and the predetermined ratio can be changed by adjusting any of these elements.

[0060] Based on the curve control handle described above, embodiments of the present invention further provide an interventional system incorporating the curve control handle. This interventional system further includes a curve control wire 6. The curve control wire 6 is fixed to a curve control wire connector 4, thereby allowing it to move along axis A under the drive of the curve control wire connector 4. This interventional system may further include a catheter 71, a guidewire, and other necessary components. These are well known in the art and are not described further here. The proposed interventional system has a variety of applications and can also be used in interventional treatment of valvular heart disease. This is only a non-limiting example.

[0061] In summary, the present invention provides a curve control handle and an intervention system. The curve control handle includes a drive unit, a circumferential indicator unit, a transmission unit, and a curve control wire connection unit. The curve control handle defines an axis. Both the drive unit and the circumferential indicator unit are configured to be rotatable circumferentially about the axis. The curve control wire connection unit is configured to be translatable along the axis. The transmission unit is configured to convert the circumferential rotation of the drive unit into both axial translation of the curve control wire connection unit and circumferential rotation of the circumferential indicator unit. The amount of axial translation of the curve control wire connection unit along the axis is in a predetermined ratio to the amount of circumferential rotation of the circumferential indicator unit. With this arrangement, operation of the drive unit simultaneously causes axial translation of the curve control wire connection unit and circumferential rotation of the circumferential indicator unit, and the circumferential indicator unit displays the translational momentum of the curve control wire connection unit. Furthermore, since the circumferential indicator unit displays information simply by its circumferential movement, space is saved in the arrangement of other components of the curve control handle.

[0062] The embodiments described above can be combined in any suitable combination. The descriptions above represent only some preferred embodiments of the invention and do not limit its scope in any way. Any changes and modifications made by those skilled in the art based on the above teachings are included within the scope of the invention. [Explanation of symbols]

[0063] 1: Drive unit 11: Nobu 2: Circumferential direction display section 24: Fourth stopping method 3: Communication Department 31: Rotating shaft 311: First external thread 32: Intermediate member 322: Second stopping means 323: Third stopping method 4: Curve control wire connection 41: Second external thread 42: Wire winding post 43: Wire Press Assembly 44: Protective sleeve 45: Threaded section 46: Driven part 50: Bass 51: Housing 52: Observation window 53: First stopping means 6: Curve control wire 71: Catheter 72: Catheter connection 8: Ball

Claims

1. A curved control handle comprising a drive unit, a circumferential indicator unit, a transmission unit, and a curved control wire connection unit, The curve control handle defines an axis, the drive unit and the circumferential direction indicator unit are both configured to rotate circumferentially about the axis, and the curve control wire connection unit is configured to move along the axis. The transmission unit is configured to convert the circumferential rotation of the drive unit into movement along the axis of the curvature control wire connection unit, and the transmission unit is further configured to convert the circumferential rotation of the drive unit into circumferential rotation of the circumferential indicator unit. A curved control handle wherein the amount of movement of the curved control wire connection portion along the axis is a predetermined ratio to the amount of rotation in the circumferential direction of the circumferential direction indicator portion.

2. The transmission unit comprises a rotating shaft and an intermediate member, the rotating shaft being connected to the drive unit and thus rotatable around the circumferential axis under the drive of the drive unit, and the rotating shaft engaging with the intermediate member via a first screw thread. The direction of movement of the intermediate member is restricted to extending spirally around the axis, the intermediate member is movably connected to the circumferential display portion along the axis, and the position of the intermediate member in the circumferential direction relative to the circumferential display portion is constrained. The curved control handle according to claim 1, wherein the intermediate member helically moves around the axis under the action of the first screw thread due to the circumferential rotation of the rotating shaft, and the circumferential indicator part rotates in the circumferential direction due to the helical motion of the intermediate member.

3. The curved control handle further comprises a first stopping means, and the intermediate member has a second stopping means. The first stopping means extends spirally around the axis, and the second stopping means is arranged to be movable relative to the first stopping means along the direction of extension of the first stopping means, or the second stopping means extends spirally around the axis, and the first stopping means is arranged to be movable relative to the second stopping means along the direction of extension of the second stopping means. The curved control handle according to claim 2, wherein when the intermediate member moves along the axis under the drive of the rotating shaft, synchronous circumferential rotation is generated and helical motion is produced based on the transmission conversion between the first stopping means and the second stopping means.

4. The curved control handle according to claim 3, wherein one of the first stopping means and the second stopping means is a first recess and the other is a first projection, the first projection is movably engageable within the first recess, and the first projection and the first recess are of the same size along the axis and are in contact with each other.

5. The intermediate member has a third stopping means, and the circumferential indicator has a fourth stopping means, and the position of the circumferential indicator along the axis is constrained. The fourth stopping means extends at an angle with respect to the direction of movement of the intermediate member, and the third stopping means is configured to be movable relative to the fourth stopping means along the direction of extension of the fourth stopping means, or the third stopping means extends at an angle with respect to the direction of movement of the intermediate member, and the fourth stopping means is configured to be movable relative to the third stopping means along the direction of extension of the third stopping means, The curved control handle according to claim 2, wherein when the intermediate member moves in a spiral manner, the circumferential display unit is rotated in the circumferential direction based on the transmission conversion between the third stopping means and the fourth stopping means.

6. The curved control handle according to claim 5, wherein one of the third and fourth stopping means is a second recess, and the other is a second projection movably engaged with the second recess, and the second projection and the second recess are of the same size and in contact with each other in a direction perpendicular to the extending direction of the fourth stopping means.

7. The curvature control handle according to claim 2, wherein the rotating shaft defines a lumen extending through it along the axis, the intermediate member is positioned on the rotating shaft, the curvature control wire connection portion is positioned within the lumen, and the circumferential indicator portion is positioned on the intermediate member.

8. The bending control handle according to claim 1, wherein the transmission unit has a rotating shaft, the rotating shaft is connected to the drive unit, the rotating shaft is rotatable in the circumferential direction under the drive of the drive unit, the rotating shaft engages with the bending control wire connection unit via a second thread, and when the rotating shaft rotates in the circumferential direction, it drives the bending control wire connection unit to move along the axis under the action of the second thread.

9. The curved control handle according to claim 1, wherein the transmission unit has a rotating shaft, the rotating shaft is connected to the drive unit, the rotating shaft is rotatable in the circumferential direction under the drive of the drive unit, the curved control handle has a base and a plurality of balls arranged in the circumferential direction of the axis, and the rotating shaft is connected to the base along the axis via the plurality of balls.

10. The curve control handle according to claim 1, wherein the curve control wire connection comprises a wire winding post and a wire pressing assembly, the wire winding post is configured to wind a curve control wire, the wire pressing assembly is configured to hold the curve control wire after it has passed around the wire winding post, the axial direction of the wire winding post forms an angle with the axis, and the wire pressing assembly compresses and holds the curve control wire in a direction parallel to the axis.

11. The curved control handle according to claim 1, wherein the curved control handle has a housing, the housing has an observation window extending circumferentially inside it, and the circumferential display unit is located inside the housing and within the range of the observation window.

12. The curved control handle according to claim 1, wherein the transmission ratio from the drive unit to the circumferential display unit is greater than 1.

13. It is an intervention system, A curved control handle according to any one of claims 1 to 12, The intervention system further comprises a curve control wire, An interventional system in which the curvature control wire is connected to the curvature control wire connection and is capable of translating along the axis under the drive of the curvature control wire connection.

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