Traction rope driving assembly, control handle and endoscope

Abstract

The invention discloses a traction rope driving assembly, a control handle and an endoscope. The traction rope driving assembly comprises a rocker connecting piece, a center rotating piece, a first bevel gear, a second bevel gear, an X-direction traction wheel and a Y-direction traction wheel. The central rotating piece is provided with a first shaft hole, the X-direction traction wheel is connected with a first adapter shaft, one end of the first adapter shaft penetrates through the first shaft hole and can rotate freely, and the other end of the first adapter shaft is connected with the rocker connecting piece; a second shaft hole is formed in the center of the first bevel gear, and one end of the center rotating piece is inserted into the second shaft hole and can enable the center rotating piece to be linked with the first bevel gear; the edge of the first bevel gear and the edge of the second bevel gear are meshed and linked, and the Y-direction traction wheel is fixedly connected to the second bevel gear. The control handle comprises the traction rope driving assembly, and the endoscope comprises the control handle. The endoscope is compact in structure, and bending of the front end of the endoscope in four directions can be controlled by one hand.

Description

Technical Field

[0001] The invention relates to an endoscope control handle, and in particular to a traction rope driving component, a control handle and an endoscope. Background Art

[0002] An endoscope is a commonly used medical device that enters the body through the body's natural cavities or through small incisions in minimally invasive surgery for inspection and treatment. The endoscope handle commonly used on the market uses a mechanical transmission method, which controls the bending of the front end of the push-pull wire endoscope insertion part by rotating the dial wheel. Two sets of dial wheels are used, each dial wheel controls two directions, and the bending control in four directions is achieved. This type of endoscope handle requires two hands to operate, one hand holding the handle and the other hand controlling the two dial wheels. When adjusting the direction, you need to switch between the two dial wheels. The operation is cumbersome, the control direction is not intuitive, and it is not conducive to long-term operation. Summary of the invention

[0003] The object of the present invention is to provide a traction rope driving assembly with a compact structure, which can realize single-handed control of the bending of the front end of an endoscope in four directions.

[0004] The object of the present invention is to provide a control handle and an endoscope, wherein the handle can be held by one hand to control the bending direction of the front end of the endoscope, and the handle is intuitive, simple and easy to operate.

[0005] In order to achieve the above object, the present invention adopts the following technical solution:

[0006] A traction rope drive assembly, comprising:

[0007] The traction rope driving assembly includes a rocker connecting member, a central rotating member, a first bevel gear, a second bevel gear, an X-direction traction wheel and a Y-direction traction wheel;

[0008] The central rotating member has a first shaft hole, the center of the X-direction traction wheel is connected to a first adapter shaft, one end of the first adapter shaft passes through the first shaft hole and can rotate freely, and the other end of the first adapter shaft is connected to the rocker connecting member;

[0009] The center of the first bevel gear has a second shaft hole, one end of the central rotating member is inserted into the second shaft hole and can make the central rotating member and the first bevel gear move in a linkage manner, and the other end of the central rotating member is connected to a first shaft seat;

[0010] The edges of the first bevel gear and the second bevel gear are meshed and linked together, and the Y-direction traction wheel is fixedly connected to one side of the second bevel gear; the center of the other side of the second bevel gear has a second transfer shaft, and the second transfer shaft is connected to a second shaft seat.

[0011] Preferably, the central rotating member is disposed opposite to the second bevel gear, the second bevel gear is perpendicular to the first bevel gear, and the X-direction traction wheel and the Y-direction traction wheel are disposed opposite to each other and are located between the central rotating member and the second bevel gear.

[0012] Preferably, the central rotating member includes a plate member with a U-shaped cross section, the first shaft hole is located at the center of the plate member; the second shaft hole is a rectangular hole; one end of the plate member is provided with a rectangular block, and the rectangular block is inserted into the second shaft hole;

[0013] The other end of the plate member is provided with a cylindrical member; the first shaft seat includes a base, the upper end surface of the base is provided with a semi-circular groove, and the cylindrical member is placed in the semi-circular groove and fixed by a buckle.

[0014] Preferably, the first bevel gear is connected to a third transfer shaft, and the third transfer shaft is rotatably connected to a third shaft seat. The first shaft seat, the second shaft seat and the third shaft seat are fixed to a base.

[0015] Preferably, the X-direction traction wheel and the Y-direction traction wheel have the same structure and are of a semi-circular structure; both the upper and lower ends of the X-direction traction wheel and the Y-direction traction wheel are provided with openings for tying the traction rope.

[0016] Preferably, the first transfer shaft is connected to one end of a transmission universal joint, the transmission universal joint is rotatably connected to the third shaft seat, the other end of the transmission universal joint is connected to one end of a universal joint sleeve, and the universal joint sleeve is rotatably connected to a third shaft seat; both the second transfer shaft and the end of the universal joint sleeve are provided with power interfaces for connecting to the outside.

[0017] A control handle includes a handle housing, a rocker assembly and a traction rope driving assembly;

[0018] The handle housing includes a receiving portion and a channel portion;

[0019] The traction rope driving assembly and the rocker assembly are located in the receiving portion, and the channel portion is for passing through the traction rope;

[0020] The receiving portion includes an arc surface; the arc surface has a notch.

[0021] Wherein, the traction rope driving assembly is the traction rope driving assembly as described above.

[0022] Preferably, the rocker assembly includes a rocker button, an upper locking friction plate, a lower locking friction plate, a first compression spring and a second compression spring;

[0023] The end surface of the rocker connecting member is recessed inward to form a blind hole;

[0024] One end of the lower locking friction plate is centrally protruded with a first rod member, and the other end is centrally protruded with a second rod member. The lower locking friction plate can selectively abut against the inner side surface of the arc surface;

[0025] The second compression spring is sleeved on the second rod member and one end thereof abuts against the lower locking friction plate, and the other end abuts against the bottom of the blind hole; the first rod member is provided with a threaded section. The first rod member passes through the notch. The upper locking friction plate has an internal thread at the center. The upper locking friction plate is screwed onto the threaded section and can selectively press the upper locking friction plate against the outer side surface of the arc surface, or disengage the upper locking friction plate from the outer side surface of the arc surface;

[0026] The outer end of the first rod member is installed with the rocker button. The inner side of the rocker button has an inner groove. The first compression spring is sleeved on the first rod member and abuts against the bottom of the inner groove at one end and abuts against the upper locking friction plate at the other end.

[0027] Preferably, the upper locking friction plate, the lower locking friction plate and the arc surface have the same bending curvature.

[0028] An endoscope includes the control handle as described above.

[0029] The advantages of the present invention are as follows:

[0030] The traction rope driving assembly, the control handle and the endoscope provided by the present invention have a compact structure of the traction rope driving assembly and can realize the bending of the front end of the endoscope in four directions by one hand. The control handle can be held by one hand to control the bending direction of the front end of the endoscope, which is intuitive, simple and convenient to operate. Description of the Drawings

[0031] Figure 1 and Figure 2 is a schematic structural diagram of a traction rope driving assembly of the present invention;

[0032] Figure 3 and Figure 4 is a partial structural schematic diagram of a traction rope driving assembly of the present invention;

[0033] Figure 5 is a schematic structural diagram of an X-direction traction wheel and a Y-direction traction wheel of the present invention;

[0034] Figure 6 is a schematic structural diagram of another traction rope driving assembly of the present invention;

[0035] Figure 7 is a partial structural schematic diagram of another traction rope driving assembly of the present invention;

[0036] Figure 8It is a structural schematic diagram of a transmission universal joint and a universal joint sleeve of the present invention;

[0037] Figure 9 It is a three-dimensional structural schematic diagram of a control handle of the present invention;

[0038] Figure 10 It is a schematic cross-sectional structure diagram of a control handle of the present invention;

[0039] Figure 11 It is a schematic cross-sectional structural diagram of a control handle of the present invention. DETAILED DESCRIPTION

[0040] The present invention is further described in detail below with reference to the accompanying drawings and embodiments.

[0041] See also Figures 1 to 5 The traction rope driving assembly 10 includes a rocker connecting member 11, a central rotating member 12, a first bevel gear 13, a second bevel gear 14, an X-direction traction wheel 15, and a Y-direction traction wheel 16. The central rotating member 12 has a first axial hole, and a first adapter shaft 17 is provided at the center of the X-direction traction wheel 15. One end of the first adapter shaft 17 passes through the first axial hole and can rotate freely, and the other end of the first adapter shaft 17 is connected to the rocker connecting member 11. The center of the first bevel gear 13 has a second axial hole, and one end of the central rotating member 12 is inserted into the second axial hole and can make the central rotating member 12 and the first bevel gear 13 linked, and the other end of the central rotating member 12 is rotatably connected to a first shaft seat. Among them, the central rotating member 12 includes a plate with a U-shaped cross section, the first axial hole is located at the center of the plate; the second axial hole is a rectangular hole; one end of the plate is provided with a rectangular block, and the rectangular block is inserted into the second axial hole. A cylindrical member is provided at the other end of the plate; the first shaft seat includes a base 18, and a semicircular groove is provided on the upper end surface of the base 18. The cylindrical member is placed in the semicircular groove and fixed by a buckle 19.

[0042] The edges of the first bevel gear 13 and the second bevel gear 14 are meshed and linked, and the Y-direction traction wheel 16 is fixedly connected to one side of the second bevel gear 14; the center of the other side of the second bevel gear 14 has a second transfer shaft 20, and the second transfer shaft 20 is rotatably connected to a second shaft seat 21. The central rotating member 12 is arranged opposite to the second bevel gear 14, and the second bevel gear 14 is perpendicular to the first bevel gear 13. The X-direction traction wheel 15 and the Y-direction traction wheel 16 are arranged opposite to each other and are located between the central rotating member 12 and the second bevel gear 14. A third transfer shaft 22 is arranged at the center of the first bevel gear 13. The third transfer shaft 22 is rotatably connected to a third shaft seat 23. Optionally, a power interface 24 for connecting to the outside world is provided at the end of the third transfer shaft 22. The central rotating member 12 is perpendicular to the first bevel gear 13, and the second bevel gear 14 is perpendicular to the first bevel gear 13.

[0043] The first shaft seat, the second shaft seat 21, and the third shaft seat 23 are fixed to a base 30, and the base 30 is fixed inside the handle housing 32. The X-direction traction wheel 15 and the Y-direction traction wheel 16 have the same structure and are semi-circular structures; perforations are provided at both the upper and lower ends of the X-direction traction wheel 15 and the Y-direction traction wheel 16 for tying the traction rope; grooves are provided on the outer edges of the X-direction traction wheel 15 and the Y-direction traction wheel 16 for winding the traction rope. The traction rope passes through the grooves and the perforations, and after repeated winding, the traction rope is knotted and fixed with glue. Each of the X-direction traction wheel 15 and the Y-direction traction wheel 16 fixes a set of traction ropes, and by rotating, the traction rope in one direction is tightened and the traction rope in the other direction is loosened to control the bending of the front end of the endoscope insertion portion. In this embodiment, the X-direction traction wheel 15 is responsible for the bending control in the up and down direction, and the Y-direction traction wheel 16 controls the bending control in the left and right direction.

[0044] Refer to Figures 6 to 8 , one end of a first transfer shaft 17 on the left side of the X-direction traction wheel 15 is connected to one end of a transmission universal joint 25. The transmission universal joint 25 is rotatably connected to the third shaft seat 23. The other end of the transmission universal joint 25 is connected to one end of a universal joint sleeve 26. The other end of the universal joint sleeve 26 is provided with a power interface 24 for connecting to the outside. The rectangular protrusion on the right side of the X-direction traction wheel 15 is for connecting the rocker connecting member 11. When the rocker button 37 is toggled back and forth, the X-direction traction wheel 15 rotates accordingly. The two power interfaces 24 can be connected to an external assist module to reduce the doctor's operation burden. One end of the universal joint sleeve 26 is a hollow cylindrical member, and at least one straight long hole 27 is provided along the length direction of the hollow cylindrical member. The end of the transmission universal joint 25 is provided with a cylindrical adapter 28, and the cylindrical adapter 28 is provided with a limit protrusion 29. The cylindrical adapter 28 is partially inserted into the hollow cylindrical member and the limit protrusion 29 slides in the corresponding straight long hole 27. Accordingly, the transmission universal joint 25 can slide back and forth inside the universal joint sleeve 26, and due to the limiting effect of the straight long hole 27 of the universal joint sleeve 26 on the transmission universal joint 25, there is a distance limit for the back and forth movement. At the same time, when the universal joint sleeve 26 rotates, it can drive the transmission universal joint 25 to rotate. When the traction rope drive assembly 10 is equipped with an assist module, the X-direction traction wheel 15 can be driven to rotate by driving the universal joint sleeve 26 to rotate. It should be noted that the transmission universal joint and the universal joint sleeve are not essential items, that is, the traction rope drive assembly may not be provided with a transmission universal joint and a universal joint sleeve, and the third transfer shaft may not be provided with a power interface.

[0045] Refer to Figures 9 to 11The control handle 31 includes a handle housing 32, a rocker assembly 33 and a traction rope drive assembly 10. The traction rope drive assembly 10 can be the solution provided in the above embodiment. The handle housing 32 includes a receiving portion 34 and a channel portion 35. The traction rope drive assembly 10 and the rocker assembly 33 are located in the receiving portion 34, and the channel portion 35 is used to pass the traction rope or other data line interfaces inherent to the control handle 31. The receiving portion 34 includes an arc surface 36. The arc surface 36 has a notch.

[0046] The rocker assembly 33 includes a rocker button 37, an upper locking friction plate 38, a lower locking friction plate 39, a first compression spring 40 and a second compression spring 41. The end surface of the rocker connector 11 is recessed inward to form a blind hole 42. A first rod 43 is convexly provided at the center of one end of the lower locking friction plate 39, and a second rod 44 is convexly provided at the center of the other end. The lower locking friction plate 39 can selectively abut the inner side surface of the arc surface 36. A blind hole 42 is provided at the end of the rocker connector 11, and the second compression spring 41 is sleeved on the second rod 44 and one end of the second compression spring abuts against the lower locking friction plate 39, and the other end abuts against the bottom of the blind hole 42. Optionally, the blind hole 42 is a stepped blind hole, the root of the first rod 43 is a mounting stop, the bottom small hole is slightly larger than the diameter of the second compression spring 41 to accommodate the second compression spring 41, and the upper large hole cooperates with the mounting stop to insert the first rod 43 into the stepped blind hole. When the rocker button 37 is not pressed, the lower locking friction sheet 39 is pressed against the inner side of the arc surface 36 by the action of the second compression spring 41, and the rocker assembly 33 is locked due to the friction force, limiting the movement of the rocker button 37, ensuring that the curvature of the front end of the endoscope insertion part will not change after the hand is released, which is convenient for temporary operation or relaxation. When the rocker button 37 is pressed, the second compression spring 41 is compressed, and the lower locking friction sheet 39 moves downward to separate from the inner side of the arc surface 36, so that the rocker button 37 can be bent in any direction.

[0047] The first rod 43 is provided with a threaded section. The first rod 43 passes through the notch. The upper locking friction plate 38 has internal threads in the center. The upper locking friction plate 38 is screwed onto the threaded section and can selectively press against the outer side of the arc surface 36 or disengage from the outer side of the arc surface 36. The upper locking friction plate 38, the lower locking friction plate 39 and the arc surface 36 have the same bending curvature. The outer end of the first rod 43 is installed with a rocker button 37. The inner side of the rocker button 37 has an inner groove. The first compression spring 40 is sleeved on the first rod 43 and abuts against the bottom of the inner groove, and the other end abuts against the upper locking friction plate 38. The traction rope driving assembly 10 can be driven by the rocker button 37 to control the bending degree of the front end of the endoscope insertion portion. When the upper locking friction plate 38 is screwed down onto the threaded section, since the upper locking friction plate 38 has the same curvature as the arc surface, the upper locking friction plate 38 is in full contact and locked with the arc surface. Due to the frictional force, the upper locking friction plate 38 cannot move at all, and the rocker button 37 is locked and cannot move, while the first compression spring 40 provides continuous pressure to prevent loosening. After the upper locking friction plate 38 is unscrewed upward, the inner side of the upper locking friction plate 38 is disengaged from the outer side of the arc surface 36, and the rocker button 37 can rotate freely. At this time, due to the pressure provided by the first compression spring 40, the upper locking friction plate 38 is not easily loosened after being screwed upward in place, ensuring the gap between the inner side of the upper locking friction plate 38 and the handle housing.

[0048] This embodiment also provides an endoscope, including the control handle as described above.

[0049] During use, the rocker button 37 is rocked back and forth to drive the rocker connecting piece 11 to swing back and forth. The X-direction traction wheel 15 rotates to drive the upper and lower direction wire traction ropes, realizing the upward and downward bending of the front end of the endoscope insertion portion.

[0050] The rocker button 37 is rocked left and right, and the rocker connecting piece 11 drives the central rotating piece 12 to rotate. The first bevel gear 13, the second bevel gear 14, and the Y-direction traction wheel 16 rotate to drive the left and right direction wire traction ropes, realizing the left and right bending of the front end of the endoscope insertion portion.

[0051] When the rocker button 37 is rocked in any direction, the traction rope driving assembly 10 decomposes the movement direction of the rocker button 37 into the rotation of the X-direction traction wheel 15 and the rotation of the Y-direction traction wheel 16, realizing the three-dimensional direction assistance of the rocker and realizing any angle bending within the allowable bending range of the front end of the endoscope insertion portion.

[0052] It should be noted that in the description of the present invention, the terms indicating directions or positional relationships such as "center", "upper", "lower", "left", "right", "front", "rear", etc. are based on the directions or positional relationships shown in the drawings. This is only for convenience of description and does not indicate or imply that the device or element must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation to the present invention. In addition, the terms "first", "second", "third" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance.

[0053] In addition, it should also be noted that in the description of the present invention, unless otherwise clearly specified and defined, the terms "installed", "connected", "coupled" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those skilled in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0054] The term "comprising" or any other similar term is intended to cover non-exclusive inclusion, so that a parameter or device comprising a series of elements not only includes those elements but also includes other elements not explicitly listed, or also includes elements inherent in these parameters or devices.

[0055] The above is the preferred embodiment of the present invention and the technical principles applied. For those skilled in the art, any obvious changes such as equivalent transformation and simple substitution based on the technical solution of the present invention without departing from the spirit and scope of the present invention fall within the protection scope of the present invention.

Claims

1. A traction rope drive assembly, characterized in that: include: The traction rope driving assembly includes a rocker connecting member, a central rotating member, a first bevel gear, a second bevel gear, an X-direction traction wheel and a Y-direction traction wheel; The central rotating member has a first shaft hole, the center of the X-direction traction wheel is connected to a first adapter shaft, one end of the first adapter shaft passes through the first shaft hole and can rotate freely, and the other end of the first adapter shaft is connected to the rocker connecting member; The center of the first bevel gear has a second shaft hole, one end of the central rotating member is inserted into the second shaft hole and can make the central rotating member and the first bevel gear move in a linkage manner, and the other end of the central rotating member is connected to a first shaft seat; The edges of the first bevel gear and the second bevel gear are meshed and linked together, and the Y-direction traction wheel is fixedly connected to one side of the second bevel gear; the center of the other side of the second bevel gear has a second transfer shaft, and the second transfer shaft is connected to a second shaft seat.

2. The traction rope drive assembly according to claim 1, characterized in that: The central rotating member is arranged opposite to the second bevel gear, the second bevel gear is perpendicular to the first bevel gear, and the X-direction traction wheel and the Y-direction traction wheel are arranged opposite to each other and are located between the central rotating member and the second bevel gear.

3. The traction rope drive assembly according to claim 1, characterized in that: The central rotating member comprises a plate member with a U-shaped cross section, wherein the first axial hole is located at the center of the plate member; the second axial hole is a rectangular hole; a rectangular block is provided at one end of the plate member, and the rectangular block is plugged into the second axial hole; A cylindrical member is disposed at the other end of the plate; the first shaft seat includes a base, and a semicircular groove is disposed on the upper end surface of the base. The cylindrical member is placed in the semicircular groove and fixed by a buckle.

4. The traction rope drive assembly according to claim 3, characterized in that: The first bevel gear is connected to the third transfer shaft, and the third transfer shaft is rotatably connected to a third shaft seat. The first shaft seat, the second shaft seat and the third shaft seat are fixed to a base.

5. The traction rope drive assembly according to claim 4, characterized in that: The X-direction traction wheel and the Y-direction traction wheel have the same structure and are semicircular structures; the upper and lower ends of the X-direction traction wheel and the Y-direction traction wheel are both provided with openings for tying traction ropes.

6. The traction rope drive assembly according to claim 4, characterized in that: The first adapter shaft is connected to one end of a transmission universal joint, and the transmission universal joint is rotatably connected to the third shaft seat. The other end of the transmission universal joint is connected to one end of a universal joint sleeve, and the universal joint sleeve is rotatably connected to the third shaft seat; the ends of the second adapter shaft and the universal joint sleeve are both provided with power interfaces for connecting to the outside world.

7. A control handle, characterized in that: It includes a handle housing, a rocker assembly and a traction rope drive assembly; The handle housing comprises a receiving portion and a channel portion; The traction rope driving assembly and the rocker assembly are located in the accommodation portion, and the channel portion is used for passing the traction rope; The accommodating portion comprises an arc-shaped surface; the arc-shaped surface has a notch. Wherein, the traction rope drive assembly is a traction rope drive assembly as described in any one of claims 1 to 6.

8. The control handle according to claim 7, characterized in that: The rocker assembly includes a rocker button, an upper locking friction plate, a lower locking friction plate, a first compression spring and a second compression spring; The end surface of the rocker connecting piece is recessed inwardly to form a blind hole; A first rod is protruded from the center of one end of the lower locking friction plate, and a second rod is protruded from the center of the other end, and the lower locking friction plate can selectively abut against the inner side surface of the arc surface; The second compression spring is sleeved on the second rod and has one end thereof abutting against the lower locking friction plate and the other end thereof abutting against the bottom of the blind hole; the first rod is provided with a threaded section, the first rod passes through the notch, the center of the upper locking friction plate has an internal thread, the upper locking friction plate is screwed to the threaded section, and can selectively press the upper locking friction plate against the outer side surface of the arc surface, or separate the upper locking friction plate from the outer side surface of the arc surface; The rocker button is installed at the outer end of the first rod, and the inner side of the rocker button has an inner groove. The first compression spring is sleeved on the first rod and abuts against the bottom of the inner groove, and the other end abuts against the upper locking friction plate.

9. The control handle according to claim 7, characterized in that: The upper locking friction plate, the lower locking friction plate and the arc-shaped surface have the same curvature.

10. An endoscope, characterized in that: Comprising a control handle as claimed in claim 9.

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