Endoscope bending angle control structure

Abstract

The present invention discloses an endoscope bending angle control structure, including a main body, which is cylindrical and symmetrically provided with 2n first slide grooves, n≥2, and the positions of the first slide grooves at the bottom of the main body are all provided with through holes connected to the first slide grooves; a sleeve, which is slidably sleeved on the main body, and 2n‑1 second slide grooves are provided on the inner side of the sleeve, and each second slide groove is corresponding to one of the first slide grooves; a slider is slidably arranged in the first slide groove in a one-to-one correspondence, and a protrusion protruding outward from the first slide groove is provided at the upper end of the slider, one of the protrusions abuts against the end of the sleeve, and the remaining protrusions respectively correspond to the second slide grooves one-to-one, and the second slide groove can accommodate the protrusion and allow the protrusion to slide; a steel wire passes through the through hole and is connected to the slider at one end; an elastic reset member for driving the slider to reset, one end of which is connected to the slider and the other end is connected to the main body.

Description

Technical Field

[0001] The present invention relates to the field of endoscope products, and in particular to an endoscope bending angle control structure. Background Art

[0002] The angle control structure of the medical endoscope mainly connects the bending snake bone with a steel wire, and the bending snake bone is bent by pulling the steel wire to adjust the angle of the endoscope.

[0003] Currently, there are two main types of angle control systems for flexible medical endoscopes: a four-way bending control system with dual control handles for large endoscopes, and a two-way angle control system with a single control handle for small endoscopes. Both control systems have certain drawbacks: the four-way control system is complex, expensive to manufacture, and bulky; the two-way control system can only control two angles, which cannot meet the needs of complex angle control. Summary of the Invention

[0004] The present invention aims to solve at least one of the technical problems existing in the prior art. To this end, the present invention provides an endoscope bending angle control structure that has a simple structure and can control angles in multiple directions.

[0005] According to an embodiment of the present invention, an endoscope bending angle control structure includes a main body, which is cylindrical and symmetrically provided with 2n first sliding grooves, n≥2, and the positions of the first sliding grooves at the bottom of the main body are all provided with through holes connected to the first sliding grooves; a sleeve, which is slidably sleeved on the main body, and 2n-1 second sliding grooves are provided on the inner side of the sleeve, and each second sliding groove is corresponding to one of the first sliding grooves; a slider is slidably provided in the first sliding groove in a one-to-one correspondence, and a protrusion protruding outward from the first sliding groove is provided on the upper end of the slider, one of the protrusions abuts against the end of the sleeve, and the remaining protrusions respectively correspond to the second sliding grooves one-to-one, and the second sliding groove can accommodate the protrusion and allow the protrusion to slide; a steel wire passes through the through hole, and one end of which is connected to the slider; an elastic reset member for driving the slider to reset, one end of which is connected to the slider and the other end is connected to the main body.

[0006] According to an embodiment of the present invention, an endoscope bending angle control structure has at least the following beneficial effects: the shaft sleeve is rotated so that the corresponding protrusion abuts against the shaft sleeve, and the remaining protrusion corresponds to the second slide groove, and the shaft sleeve is moved upward, and the shaft sleeve drives the corresponding protrusion to move upward, and the corresponding slider also moves upward, causing the steel wire to drive the bending snake (structure not shown in the figure) to bend upward. Correspondingly, another slider symmetrically arranged with the upwardly moving slider moves in the opposite direction during the bending process of the snake, and compresses the elastic return member during the downward movement of the slider; the shaft sleeve is moved downward, and the slider returns to its original position. Since the reaction of the symmetrically arranged slider disappears, the symmetrically arranged slider also returns to its original position under the action of the elastic return member. According to the angle to be adjusted by the endoscope, the shaft sleeve is moved upward, driving the corresponding slider upward, and the steel wire pulls the snake to bend, thereby adjusting the angle of the endoscope. The parameter n is designed as needed. For example, if n is 2, the angle of the endoscope in four directions can be adjusted. If n is 3, the angle of the endoscope in six directions can be adjusted, and so on. The structure is simple and can achieve multi-directional angle control of the endoscope.

[0007] According to an embodiment of the present invention, an elastic sleeve is further included. The elastic sleeve is connected to the bottom of the body through a through hole, and the steel wire passes through the elastic sleeve.

[0008] According to an embodiment of the present invention, the through hole is configured as a first stepped hole that is smaller at the top and larger at the bottom, the lower part of the first stepped hole is threadedly connected to an adjustment sleeve, a second stepped hole that is smaller at the top and larger at the bottom is configured in the adjustment sleeve, and the lower part of the second stepped hole is sleeved with an elastic sleeve.

[0009] According to an embodiment of the present invention, the elastic return member is a return spring.

[0010] According to an embodiment of the present invention, the outer side of the sleeve is rough.

[0011] According to an embodiment of the present invention, a plurality of concave grooves are vertically spaced apart on the outer side of the sleeve.

[0012] According to an embodiment of the present invention, a limit cover is further included. The limit cover is sleeved on the upper end of the body, and a limit block is provided on the upper end surface of the shaft sleeve.

[0013] According to an embodiment of the present invention, the limiting block is provided with an avoidance groove for accommodating the protrusion.

[0014] According to an embodiment of the present invention, the upper surface of the limiting cover is provided with connection holes corresponding to the first sliding grooves one by one, and each of the connection holes is correspondingly provided with a screw, which is inserted into the connection hole and threadedly connected to the first sliding groove.

[0015] According to an embodiment of the present invention, the number of the first chute and the number of the steel wires are both 4.

[0016] Additional aspects and advantages of the present invention will be set forth in part in the description which follows and, in part, will be obvious from the description which follows, or may be learned by practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The above and / or additional aspects and advantages of the present invention will become apparent and readily understood from the following description of the embodiments with reference to the accompanying drawings, in which:

[0018] Figure 1 This is a schematic structural diagram of an endoscope bending angle control structure according to an embodiment of the present invention;

[0019] Figure 2 for Figure 1 A cross-sectional view of a structure of a bending angle control structure of an endoscope;

[0020] Figure 3 for Figure 1 A schematic structural diagram of a bending angle control structure of an endoscope;

[0021] Figure 4 for Figure 1 A schematic structural diagram of a shaft sleeve of an endoscope bending angle control structure;

[0022] Figure 5 for Figure 1 A schematic structural diagram of an adjustment sleeve of an endoscope bending angle control structure;

[0023] Figure 6 for Figure 1 A schematic structural diagram of a main body of an endoscope bending angle control structure;

[0024] Reference numerals:

[0025] Main body 1, sleeve 2, first slide groove 3, second slide groove 4, slider 5, protrusion 6, elastic reset member 7, elastic sleeve 8, through hole 9, adjustment sleeve 10, steel wire 11, concave groove 12, limit cover 13, limit block 14, screw 15. DETAILED DESCRIPTION

[0026] The following describes embodiments of the present invention in detail. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended only to explain the present invention and are not to be construed as limiting the present invention.

[0027] In the description of the present invention, it should be understood that descriptions involving orientations, such as up, down, front, back, left, right, top, bottom, etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0028] In the description of the present invention, if there is a description of first and second, it is only for the purpose of distinguishing technical features, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features or implicitly indicating the order of the indicated technical features.

[0029] In the description of the present invention, unless otherwise clearly defined, words such as setting and connecting should be understood in a broad sense, and technicians in the relevant technical field can reasonably determine the specific meanings of the above words in the present invention based on the specific content of the technical solution.

[0030] Reference below Figures 1 to 6 An endoscope bending angle control structure according to an embodiment of the present invention is described.

[0031] like Figures 1 to 6 As shown, an endoscope bending angle control structure according to an embodiment of the present invention is described, including a body 1, which is cylindrical and symmetrically provided with 2n first slide grooves 3, n≥2, and a through hole 9 connected to the first slide groove 3 is provided at the position corresponding to the first slide groove 3 at the bottom of the body 1; a sleeve 2, which is slidably sleeved on the body 1, and 2n-1 second slide grooves 4 are provided on the inner side of the sleeve 2, each second slide groove 4 is corresponding to one first slide groove 3; a slider 5, which is slidably arranged in the first slide groove 3 in a one-to-one correspondence, and a protrusion 6 protruding outward from the first slide groove 3 is provided at the upper end of the slider 5, one of the protrusions 6 abuts the end of the sleeve 2, and the remaining protrusions 6 correspond one-to-one to the second slide groove 4 respectively, and the second slide groove 4 can accommodate the protrusion 6 and allow the protrusion 6 to slide; a steel wire 11, which passes through the through hole 9 and is connected to the slider 5 at one end; an elastic reset member 7 for driving the slider 5 to reset, one end of which is connected to the slider 5 and the other end is connected to the body 1.

[0032] In order to allow the sleeve 2 to rotate around the body 1, the body 1 is set to be cylindrical. In order to allow the slider 5 to pull the steel wire 11 to move upward, the sleeve 2 is rotated, and one of the protrusions 6 is in contact with the sleeve 2. When the sleeve 2 is moved upward, the protrusion 6 in contact with the sleeve 2 will be subjected to an upward force, thereby driving the slider 5 and the steel wire 11 to move upward, thereby prompting the steel wire 11 to drive the bending snake bone (this structure is not drawn in the figure) to bend upward. The other protrusion 6 symmetrically arranged with the protrusion 6 will move in the opposite direction during the bending process of the snake bone. Therefore, a second slide groove 4 is provided so that the other protrusion 6 can slide in the second slide groove 4. The slider 5 corresponding to the other protrusion 6 will press down the elastic reset part 7 during the movement. When the sleeve 2 is moved downward, the protrusion 6 returns to its original position, and the other protrusion 6 also returns to its original position under the action of the elastic reset part 7.

[0033] Specifically, the shaft sleeve 2 is rotated so that the corresponding protrusion 6 abuts against the shaft sleeve 2, and the remaining protrusion 6 corresponds to the second slide groove 4. The shaft sleeve 2 is moved upward, and the shaft sleeve 2 drives the corresponding protrusion 6 to move upward. The corresponding slider 5 will also move upward, prompting the steel wire 11 to drive the bending snake bone (this structure is not drawn in the figure) to bend upward. Correspondingly, the other slider 5 symmetrically arranged with the upward-moving slider 5 will move in the opposite direction during the bending process of the snake bone, and will compress the elastic reset part 7 during the downward movement of the slider 5; the shaft sleeve 2 is moved downward, and the slider 5 returns to its original position. Since the reaction of the other symmetrically arranged slider 5 disappears, the other symmetrically arranged slider 5 also returns to its original position under the action of the elastic reset part 7. According to the angle that the endoscope needs to be adjusted, the sleeve 2 is moved upward, driving the corresponding slider 5 to move upward, and the steel wire 11 pulls the snake bone to bend, thereby adjusting the angle of the endoscope. The parameter n is designed according to the needs. For example, if n is 2, the angle of the endoscope in four directions can be adjusted. If n is 3, the angle of the endoscope in six directions can be adjusted, and so on. The structure is simple and can realize multi-directional angle control of the endoscope. It should be noted that when different sliders 5 are driven to move upward, the direction of rotation of the endoscope is also inconsistent. That is to say, each slider 5 represents a direction, and when the corresponding slider 5 is driven upward, the endoscope will turn in the corresponding direction.

[0034] In some other embodiments, an elastic sleeve 8 is further included, and the elastic sleeve 8 is connected to the bottom of the main body 1 through a through hole 9. The steel wire 11 passes through the elastic sleeve 8. The elastic sleeve 8 can guide the movement of the steel wire 11. The sleeve is set to be elastic to facilitate the bending of the steel wire 11. If it is a rigid sleeve, once the steel wire 11 drives the endoscope to turn, it will not be possible. It should be noted that in this embodiment, the steel wire 11 is very thin, and is a few millimeters of steel wire 11. The smallest diameter can be 0.15 mm.

[0035] In some other embodiments, reference Figure 2 The through hole 9 is configured as a first stepped hole with a small upper portion and a large lower portion, and an adjusting sleeve 10 is threadedly connected to the lower portion of the first stepped hole. A second stepped hole with a small upper portion and a large lower portion is provided in the adjusting sleeve 10, and an elastic sleeve 8 is sleeved on the lower portion of the second stepped hole. The elastic sleeve 8 needs to be cut to a certain length during processing, but there will inevitably be a certain error in the cutting process, and the endoscope is a medical product with strict requirements on the accuracy of the components. For example, in the process of cutting the elastic tube, even an error of a few millimeters is a large error, but these errors are unavoidable. If it is cut too long, the elastic sleeve 8 cannot be installed in the endoscope, and if it is cut too short, the elastic sleeve 8 cannot be installed in the endoscope. , the elastic sleeve 8 will have a gap with the endoscope. When the steel wire 11 moves, the elastic sleeve 8 will move around, and the elastic sleeve 8 cannot be restricted, which will also affect the movement of the steel wire 11. Therefore, when the elastic sleeve 8 is cut too long, the adjusting sleeve 10 is rotated to rise. If it is cut too short, the adjusting sleeve 10 is rotated to move downward so that the elastic sleeve 8 just touches the inner wall of the endoscope. In the process of movement of the steel wire 11, it is inevitable to avoid friction with the elastic sleeve 8. Therefore, when the steel wire 11 moves, the elastic sleeve 8 will also move slightly. Therefore, a second stepped hole with a smaller upper part and a larger lower part is provided in the adjusting sleeve 10 to prevent the elastic sleeve 8 from moving upward.

[0036] In this embodiment, the elastic reset member 7 is a reset spring. In other embodiments, reset can also be performed by magnet adsorption.

[0037] In some other embodiments, the outer surface of the sleeve 2 is roughened to increase the friction of the outer surface of the sleeve 2 and make it easier to rotate the sleeve 2.

[0038] In this embodiment, a plurality of concave grooves 12 are vertically spaced apart on the outer surface of the sleeve 2. In other embodiments, the outer surface of the sleeve 2 can also be set into other shapes, such as a plurality of convex strips are vertically spaced apart, as long as the shape can increase the friction force.

[0039] In some other embodiments, a limit cover 13 is further included, which is sleeved on the upper end of the body 1. A limit block 14 is provided on the upper end surface of the sleeve 2. When the sleeve 2 moves upward, the limit block 14 hits the limit cover 13, and the sleeve 2 stops moving upward.

[0040] In some other embodiments, the limiting block 14 is provided with an avoidance groove for accommodating the protrusion 6 so that the corresponding protrusion 6 can abut against the sleeve 2 by rotating the sleeve 2 according to the direction in which the endoscope needs to be adjusted.

[0041] In some other embodiments, the upper surface of the limit cover is provided with connection holes corresponding one to one with the first slide groove 3, and each connection hole is correspondingly provided with a screw 15, and the screw 15 is inserted into the connection hole and threadedly connected to the first slide groove 3 so that the limit cover 13 and the main body 1 can be fastened together.

[0042] In some other embodiments, the number of the first slide grooves 3 and the number of the steel wires 11 are both 4, and correspondingly, 4 steel wires 11 are also provided, so that the 4 directions of the endoscope can be adjusted.

[0043] When in use, first adjust the adjustment sleeve 10 so that the length of the elastic sleeve 8 protruding from the bottom of the body 1 is consistent, so that this structure can be installed in an endoscope (this structure is not drawn in the figure). After installation, adjust the corresponding slider 5 to rise as needed, and the steel wire 11 drives the bending snake bone (this structure is not drawn in the figure) to bend, thereby adjusting the direction of the endoscope lens.

[0044] Throughout this specification, reference to terms such as "one embodiment," "some embodiments," "illustrative embodiments," "examples," "specific examples," or "some examples" means that a specific feature, structure, material, or characteristic described in conjunction with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, illustrative uses of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

[0045] While embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions, and variations may be made to the embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the claims and their equivalents.

Claims

1. An endoscope bending angle control structure, characterized in that: include: The main body is cylindrical and symmetrically provided with 2n first chutes, where n≥2. The positions at the bottom of the main body corresponding to the first chutes are all provided with through holes communicating with the first chutes; A shaft sleeve is slidably sleeved on the body, and 2n-1 second sliding grooves are provided on the inner side of the shaft sleeve, and each second sliding groove is provided corresponding to one first sliding groove; A slider is slidably disposed in the first chute in a one-to-one correspondence, and a protrusion is provided on the upper end of the slider and protrudes outward from the first chute, one of the protrusions abuts against the end of the shaft sleeve, and the remaining protrusions correspond to the second chute in a one-to-one correspondence, and the second chute can accommodate the protrusions and allow the protrusions to slide; a steel wire passing through the through hole and having one end connected to the slider; An elastic reset member for driving the slider to reset has one end connected to the slider and the other end connected to the body.

2. The endoscope bending angle control structure according to claim 1, characterized in that: It also includes an elastic sleeve, which is connected to the bottom of the body through a through hole, and the steel wire passes through the elastic sleeve.

3. The endoscope bending angle control structure according to claim 2, characterized in that: The through hole is configured as a first stepped hole that is smaller at the top and larger at the bottom, the lower portion of the first stepped hole is threadedly connected to an adjusting sleeve, a second stepped hole that is smaller at the top and larger at the bottom is configured in the adjusting sleeve, and the lower portion of the second stepped hole is sleeved with an elastic sleeve.

4. The endoscope bending angle control structure according to any one of claims 1 to 3, characterized in that: The elastic reset member is a reset spring.

5. The endoscope bending angle control structure according to any one of claims 1 to 3, characterized in that: The outer surface of the shaft sleeve is configured to be rough.

6. The endoscope bending angle control structure according to claim 5, characterized in that: The outer surface of the shaft sleeve is provided with a plurality of concave grooves at vertical intervals.

7. The endoscope bending angle control structure according to claim 1, characterized in that: It also includes a limit cover, which is sleeved on the upper end of the body, and a limit block is provided on the upper end surface of the shaft sleeve.

8. The endoscope bending angle control structure according to claim 7, characterized in that: The limiting block is provided with an avoidance groove for accommodating the protrusion.

9. The endoscope bending angle control structure according to claim 7, characterized in that: The upper surface of the limiting cover is provided with connection holes corresponding to the first sliding grooves one by one, and each of the connection holes is correspondingly provided with a screw, which is inserted into the connection hole and threadedly connected to the first sliding groove.

10. The endoscope bending angle control structure according to claim 1, characterized in that: The number of the first chute and the number of the steel wires are both 4.

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