Steerable sheath adjustment handle

Abstract

Disclosed in the present application is a steerable sheath adjustment handle, comprising: a handle assembly; a sheath, of which one end is configured to be bendable, and the other end is mounted in the handle assembly; and a first pulling wire and a second pulling wire, one end of both being connected to one end of the sheath and the other end of same being led out from the other end of the sheath, and the first pulling wire and the second pulling wire being respectively located in the two opposite sides of the sheath in the axial direction. The handle assembly comprises a handle housing, a rotary member and a sliding shaft sleeve, the rotary member being rotationally installed on the handle housing, the sliding shaft sleeve being threadedly connected to the rotary member and being slidingly mounted on the inner wall of the handle housing in the axial direction of the sheath, and the inner wall of the handle housing being provided with a rotation shaft. The other end of the first pulling wire is fixed to one side of the sliding shaft sleeve, and the other end of the second pulling wire winds on the rotation shaft and then is fixed to the other side of the sliding shaft sleeve. The present application rotates the rotary member to drive the sliding shaft sleeve to axially move, so as to link the first pulling wire and the second pulling wire to achieve tensioning on one side while loosening on the other side, thereby bending one end of the sheath.

Description

Adjustable curved sheath tube adjustment handle

[0001] This application is based on the Chinese patent application with application number 202322150352.2 and application date August 10, 2023, and claims its priority. The entire content of the application is hereby introduced as a whole into this application. Technical Field

[0002] The present application relates to the technical field of medical devices, and in particular to an adjustable curved sheath tube adjustment handle. Background Art

[0003] The adjustable bending sheath adjustment handle is a sheath assembly used in intracavitary treatment surgery; it consists of two parts: a sheath and a sheath core; the difference from ordinary sheath assemblies is that the sheath can be operated by the adjustable bending handle to achieve the function of bending the distal end of the sheath within a certain angle range, so as to quickly and reliably reach the target lesion location and reduce the operation time; after the distal end of the sheath is bent, the tip of the sheath can be pointed to the target location, facilitating surgical operations on curved paths during interventional surgery; it can be used for channel establishment, delivery or recovery of medical devices, drug input or body fluid extraction.

[0004] In the prior art, it is very difficult to adjust the position of the sheath, especially when the bending angle of the sheath is relatively large, the traction force of the traction wire is relatively large, and it is difficult to stably maintain the sheath in the current position.

[0005] Therefore, how to provide an adjustable curved sheath tube adjustment handle that is simple to operate and accurately adjusts the position is an urgent problem to be solved. Application Contents

[0006] The purpose of this application is to provide an adjustable curved sheath tube adjustment handle, aiming to solve the problem of how to improve the operability and adjustment accuracy of the existing adjustable curved sheath tube adjustment handle.

[0007] In order to solve the above technical problems, the purpose of this application is achieved through the following technical solutions: providing an adjustable curved sheath tube adjustment handle, comprising:

[0008] handle assembly,

[0009] a sheath tube, one end of which is bendable and the other end of which is mounted in the handle assembly;

[0010] A first traction line and a second traction line, one end of each of which is connected to one end of the sheath tube and the other end of each of which is led out from the other end of the sheath tube, and the first traction line and the second traction line are respectively located on opposite sides of the sheath tube in the axial direction;

[0011] The handle assembly includes a handle shell, a rotating member and a sliding sleeve. The rotating member is rotatably mounted on the handle shell. The sliding sleeve is threadedly connected to the rotating member and is slidably mounted on the inner wall of the handle shell along the axial direction of the sheath. A rotating shaft is provided on the inner wall of the handle shell.

[0012] The other end of the first pulling line is fixed to one side of the sliding sleeve, and the other end of the second pulling line is wound around the rotating shaft and then fixed to the other side of the sliding sleeve.

[0013] Furthermore, the handle shell includes an upper shell and a lower shell covering each other, a mounting column is provided inside the upper shell or the lower shell, the rotating shaft is mounted on the mounting column, and the rotating shaft is located behind the sliding sleeve.

[0014] Furthermore, a limiting piece is provided on the mounting column, and the limiting piece is located outside the rotating shaft to limit the second traction line wound around the rotating shaft.

[0015] Furthermore, the rotating member includes a rotating cover and a linkage sleeve, the rotating cover is linked to the linkage sleeve, the rotating cover is rotatably installed on the outside of the front end of the handle shell, and the linkage sleeve is rotatably installed on the inside of the front end of the handle shell; wherein the sliding sleeve is threadedly connected to the inner wall of the linkage sleeve.

[0016] Furthermore, a protrusion is provided on the circumferential outer wall of the linkage sleeve, and the protrusion is fixedly connected to the inner wall of the rotating cover.

[0017] Furthermore, the sliding sleeve includes an integrally arranged threaded section and a lead section, the outer wall of the threaded section is threadedly connected to the inner wall of the linkage sleeve, and the other ends of the first traction line and the second traction line are both connected to the lead section.

[0018] Furthermore, the lead wire segment is provided with a clearance groove for avoiding the second pulling wire.

[0019] Furthermore, the other ends of the first pulling wire and the second pulling wire are pressed onto the lead wire segment through a thin tube.

[0020] Furthermore, a slideway is provided on the inner wall of the handle shell along the axial direction, and the lead segment is slidably mounted on the slideway.

[0021] Furthermore, the slideway includes a slide groove provided on the upper shell and the lower shell, and the lead segment is provided with a slide bar corresponding to the slide groove.

[0022] The embodiment of the present application provides an adjustable bending sheath adjustment handle, comprising: a handle assembly; a sheath, one end of which is bendable and the other end of which is installed in the handle assembly; a first traction line and a second traction line, each of which has one end connected to one end of the sheath and the other end leading out from the other end of the sheath, and the first traction line and the second traction line are respectively located on opposite sides of the axial direction of the sheath; the handle assembly comprises a handle shell, a rotating member and a sliding sleeve, the rotating member being rotatably mounted on the handle shell, the sliding sleeve being threadedly connected to the rotating member and slidably mounted on the inner wall of the handle shell along the axial direction of the sheath, and a rotating shaft being provided on the inner wall of the handle shell; the other end of the first traction line is fixed to one side of the sliding sleeve, and the other end of the second traction line is wound around the rotating shaft and fixed to the other side of the sliding sleeve. The embodiment of the present application drives the sliding sleeve to slide in the axial direction by rotating the rotating member, and the sliding sleeve links the first traction line and the second traction line to achieve one-side tightening and the other-side loosening, so as to bend one end of the sheath, that is, adjustment can be performed by rotating the rotating member, which has the advantages of simple operation and accurate adjustment. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the following is a brief introduction to the drawings required for use in the description of the embodiments. Obviously, the drawings described below are some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0024] FIG1 is a schematic diagram of the overall structure of an adjustable bending sheath tube adjustment handle provided in an embodiment of the present application;

[0025] FIG2 is a schematic diagram of the internal structure of a handle assembly provided in an embodiment of the present application;

[0026] FIG3 is a schematic diagram of the exploded structure of the handle assembly provided in an embodiment of the present application.

[0027] Description of the symbols in the figure:

[0028] 1. Handle assembly; 11. Handle housing; 111. Upper housing; 112. Lower housing; 113. Mounting column; 114. Limiting piece; 115. Rotating shaft; 116. Slide groove; 117. Limiting groove;

[0029] 12. Rotating member; 121. Rotating cover; 122. Linkage sleeve; 123. Protrusion;

[0030] 13. Sliding sleeve; 131. Threaded section; 132. Lead section; 133. Air-avoiding groove; 134. Capillary tube; 135. Raised ring;

[0031] 2. Sheath;

[0032] 3. First traction line;

[0033] 4. The second traction line. Implementation Method

[0034] The following will be combined with the drawings in the embodiments of this application to clearly and completely describe the technical solutions in the embodiments of this application. Obviously, the embodiments described are part of the embodiments of this application, not all of them. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of this application.

[0035] It will be understood that when used in this specification and the appended claims, the terms “comprises” and “comprising” indicate the presence of described features, integers, steps, operations, elements and / or components, but do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components and / or groups thereof.

[0036] It should also be understood that the terms used in this specification are for the purpose of describing specific embodiments only and are not intended to limit the present application. As used in this specification and the appended claims, the singular forms "a," "an," and "the" are intended to include the plural forms unless the context clearly indicates otherwise.

[0037] It should be further understood that the term "and / or" used in this specification and the appended claims refers to and includes any and all possible combinations of one or more of the associated listed items.

[0038] 1-3 , an embodiment of the present application provides an adjustable bending sheath adjustment handle, comprising a handle assembly 1 , a sheath 2 , a first traction line 3 , and a second traction line 4 ;

[0039] One end of the sheath tube 2 is bendable, and the other end of the sheath tube 2 is installed in the handle assembly 1;

[0040] One end of the first traction line 3 and the second traction line 4 are both connected to one end of the sheath tube 2, and the other ends of the first traction line 3 and the second traction line 4 are both led out from the other end of the sheath tube 2, and the first traction line 3 and the second traction line 4 are respectively located on opposite sides of the axial direction of the sheath tube 2;

[0041] The handle assembly 1 includes a handle housing 11, a rotating member 12, and a sliding sleeve 13. The rotating member 12 is rotatably mounted on the handle housing 11. The sliding sleeve 13 is threadedly connected to the rotating member 12 and is slidably mounted on the inner wall of the handle housing 11 along the axial direction of the sheath 2. A rotating shaft 115 is provided on the inner wall of the handle housing 11.

[0042] The other end of the first pulling wire 3 is fixed to one side of the sliding sleeve 13 , and the other end of the second pulling wire 4 is wound around the rotating shaft 115 and then fixed to the other side of the sliding sleeve 13 .

[0043] The specific working principle of this embodiment is as follows: by rotating the rotating member 12, a rotational force is applied to the sliding sleeve 13. The sliding sleeve 13 is threadedly connected to the rotating member 12 and is installed to slide along the axial direction of the sheath tube 2. Therefore, when the rotating member 12 rotates, the rotating member 12 drives the sliding sleeve 13 to slide along the axial direction of the sheath tube 2. In this way, the sliding sleeve 13 can be driven to move forward and backward by rotating the rotating member 12 forward and reverse. When the sliding sleeve 13 moves forward, the sliding sleeve 13 causes the first pull line 3 to relax. At the same time, because the other end of the second pull line 4 is wound around the rotating shaft 115 and then fixed to the sliding sleeve 13, the second pull line 4 is tightened when the sliding sleeve 13 moves forward. In this way, one end of the sheath tube 2 is pulled backward by the second pull line 4 to achieve bending. The bending angle of the sheath tube 2 can be controlled by controlling the rotation angle of the rotating member 12, which has the advantages of simple operation and accurate adjustment.

[0044] It should be understood that when the sliding sleeve 13 moves backward, the sliding sleeve 13 drives the first traction line 3 to tighten, and at the same time drives the second traction line 4 to relax, so that one end of the sheath 2 will be pulled backward by the first traction line 3 to achieve bending; that is, bidirectional bending of one end of the sheath 2 can be achieved.

[0045] The rotating part 12 and the sliding sleeve 13 of this embodiment are threaded together and have a self-locking function. Even if the sheath tube 2 is bent at a large angle, the traction force generated by the traction line will not cause the rotating part 12 to reverse, and the sheath tube 2 can be stably maintained in the current position.

[0046] In one embodiment, the handle shell 11 includes an upper shell 111 and a lower shell 112 that cover each other. A mounting column 113 is provided inside the upper shell 111 or the lower shell 112, and a rotating shaft 115 is installed on the mounting column 113. The rotating shaft 115 is located behind the sliding sleeve 13.

[0047] In this embodiment, the mounting column 113 is a column structure provided with a mounting hole, and the rotating shaft 115 is inserted into the mounting column 113. When the sliding sleeve 13 moves backward to the maximum limit, the position of the rotating shaft 115 is still located behind the sliding sleeve 13. This ensures that the second traction line 4 will be tightened when the sliding sleeve 13 moves forward, and the second traction line 4 will be relaxed when the sliding sleeve 13 moves backward, so that the second traction line 4 and the first traction line 3 generate opposite traction forces as the sliding sleeve 13 moves, thereby enabling one end of the sheath tube 2 to achieve bidirectional bending.

[0048] More specifically, a limiting plate 114 is provided on the mounting column 113, and the limiting plate 114 is located outside the rotating shaft 115 to limit the second traction line 4 wound around the rotating shaft 115; that is, when the second traction line 4 is in a relaxed state, the limiting plate 114 can prevent the second traction line 4 from detaching from the rotating shaft 115.

[0049] In one embodiment, the rotating member 12 includes a rotating cover 121 and a linkage sleeve 122. The rotating cover 121 is linked to the linkage sleeve 122. The rotating cover 121 is rotatably installed on the outside of the front end of the handle shell 11, and the linkage sleeve 122 is rotatably installed on the inside of the front end of the handle shell 11; wherein the sliding sleeve 13 is threadedly connected to the inner wall of the linkage sleeve 122.

[0050] In this embodiment, the rotating cover 121 is located outside the front end of the handle shell 11, which is convenient for the operator to perform rotation operations. The rotating cover 121 can be linked with the linkage sleeve 122 inside the front end of the handle shell 11 to rotate synchronously. To ensure the stability of the rotation, a limiting groove 117 can be set on the front end inner wall of the handle shell 11, and the circumferential outer wall of the linkage sleeve 122 is provided with a convex ring 135 and is limited in the limiting groove 117 to ensure stability.

[0051] In this embodiment, a threaded structure is provided inside the linkage sleeve 122 and the outer wall of the sliding sleeve 13 for threaded connection. In this way, by rotating the linkage sleeve 122 by the rotating cover 121, the sliding sleeve 13 can be linked to slide in the axial direction.

[0052] In this embodiment, a protrusion 123 is provided on the circumferential outer wall of the linkage sleeve 122, and a screw is passed through the rotating cover 121 and then screwed into the protrusion 123 for fixation, thereby ensuring that the rotating cover 121 can stably drive the linkage sleeve 122 to rotate synchronously.

[0053] In one embodiment, the sliding sleeve 13 includes an integrally arranged threaded section 131 and a lead section 132 . The outer wall of the threaded section 131 is threadedly connected to the inner wall of the linkage sleeve 122 , and the other ends of the first traction line 3 and the second traction line 4 are both connected to the lead section 132 .

[0054] In this embodiment, the threaded section 131 is threadedly engaged with the inner wall of the linkage sleeve 122 to achieve axial sliding of the entire sliding sleeve 13; the other ends of the first traction line 3 and the second traction line 4 are led out from the sheath 2 and connected to the lead section 132; the other ends of the first traction line 3 and the second traction line 4 are both pressed on the lead section 132 through the set thin tube 134 to ensure stability.

[0055] Among them, because the second pulling wire 4 needs to be wrapped around the rotating shaft 115 and then connected to the lead segment 132, the lead segment 132 is provided with a clearance groove 133 for avoiding the second pulling wire 4. The clearance groove 133 can reduce the friction on the second pulling wire 4, thereby reducing the torque required for the rotating cover 121 to rotate.

[0056] To ensure stable axial movement of the sliding sleeve 13, a slideway is provided along the axial direction on the inner wall of the handle housing 11, and the lead section 132 is slidably mounted on the slideway. Specifically, the slideway includes a slide groove 116 provided on the upper housing 111 and the lower housing 112, and the lead section 132 is provided with a slide bar corresponding to the slide groove 116; this ensures stable axial movement of the sliding sleeve 13.

[0057] In one embodiment, the length of the bendable portion at one end of the sheath tube 2 is greater than 700 mm, and the insertable length is 800 mm. At the same time, the inner diameter is increased, so the scope of application is wider and the flexibility is higher.

[0058] The above description is merely a specific embodiment of the present application, but the scope of protection of the present application is not limited thereto. Any person skilled in the art can easily conceive of various equivalent modifications or substitutions within the technical scope disclosed in the present application, and such modifications or substitutions should be included in the scope of protection of the present application. Therefore, the scope of protection of the present application should be based on the scope of protection of the claims.

Claims

1. An adjustable bending sheath tube adjustment handle, characterized in that: include: Handle assembly, A sheath tube, one end of which can be bent and the other end of which is installed in the handle assembly; A first traction line and a second traction line, one end of each of which is connected to one end of the sheath tube, and the other end of each of which is led out from the other end of the sheath tube, and the first traction line and the second traction line are respectively located on opposite sides of the axial direction of the sheath tube; Wherein, the handle assembly comprises a handle shell, a rotating member and a sliding sleeve, wherein the rotating member is rotatably mounted on the handle shell, the sliding sleeve is threadedly connected to the rotating member and is slidably mounted on the inner wall of the handle shell along the axial direction of the sheath tube, and a rotating shaft is provided on the inner wall of the handle shell; The other end of the first pulling line is fixed to one side of the sliding sleeve, and the other end of the second pulling line is wound around the rotating shaft and then fixed to the other side of the sliding sleeve.

2. The adjustable bending sheath tube adjustment handle according to claim 1, characterized in that: The handle shell comprises an upper shell and a lower shell covering each other, a mounting column is arranged inside the upper shell or the lower shell, the rotating shaft is mounted on the mounting column, and the rotating shaft is located behind the sliding sleeve.

3. The adjustable bending sheath tube adjustment handle according to claim 2, characterized in that: A limiting piece is provided on the mounting column, and the limiting piece is located outside the rotating shaft to limit the second traction line wound around the rotating shaft.

4. The adjustable bending sheath tube adjustment handle according to claim 1, characterized in that: The rotating member includes a rotating cover and a linkage sleeve, the rotating cover is linked to the linkage sleeve, the rotating cover is rotatably installed on the outside of the front end of the handle shell, and the linkage sleeve is rotatably installed on the inside of the front end of the handle shell; wherein the sliding sleeve is threadedly connected to the inner wall of the linkage sleeve.

5. The adjustable bending sheath tube adjustment handle according to claim 4, characterized in that: A protrusion is provided on the circumferential outer wall of the linkage sleeve, and the protrusion is fixedly connected to the inner wall of the rotating cover.

6. The adjustable bending sheath tube adjustment handle according to claim 4, characterized in that: The sliding sleeve includes an integrally arranged threaded section and a lead section, the outer wall of the threaded section is threadedly connected to the inner wall of the linkage sleeve, and the other ends of the first traction line and the second traction line are both connected to the lead section.

7. The adjustable bending sheath tube adjustment handle according to claim 6, characterized in that: The lead wire segment is provided with a clearance groove for avoiding the second pulling wire.

8. The adjustable bending sheath tube adjustment handle according to claim 6, characterized in that: The other ends of the first pulling wire and the second pulling wire are pressed onto the lead wire segment through a thin tube.

9. The adjustable bending sheath tube adjustment handle according to claim 2, characterized in that: The inner wall of the handle shell is provided with a slideway along the axial direction, and the lead wire segment is slidably mounted on the slideway.

10. The adjustable bending sheath tube adjustment handle according to claim 9, characterized in that: The slideway comprises a slide groove arranged on the upper shell and the lower shell, and the lead segment is provided with a slide bar corresponding to the slide groove.

Images