Wire pulling wheel for endoscope, endoscope handle, and endoscope

Abstract

In the endoscope wire pulling wheel (100), endoscope handle, and endoscope, in the process of winding the wire, both ends of the pulling wire are distributed on opposite sides of the winding section (120), and then the both ends of the pulling wire are wound in opposite directions into two winding grooves (121). Since the two winding grooves (121) are provided with lead wire holes (122) that communicate with the cavities (123), after the pulling wire is wound, the end of the wire is drawn into the cavity (123) through one lead wire hole (122), and then drawn out from the other lead wire hole (122) through the cavity (123). By repeating this process, the end of the pulling wire is stably fixed to the winding section (120). Compared with the conventional adhesive or welding methods, this design improves the structure of the winding section (120) so that there is no need to add additional fixing parts or use external devices, and the towing wire can be reliably fixed, which is favorable for improving the efficiency of wire fixing and at the same time improving the convenience of the wire fixing operation, thereby improving assembly efficiency.

Description

Technical Field

[0001] The present invention relates to the technical field of medical devices, and particularly relates to a wire-drawing wheel for an endoscope, an endoscope handle, and an endoscope.

Background Art

[0002] In order to clearly and intuitively grasp the pathologically changed site and improve the accuracy of diagnosis for the pathological change, the endoscope plays an extremely important role in the surgical process. Conventional endoscopes include a handle, an insertion tube, a bending section, a tip section, and a main body. Inside the handle, a knob device is provided to control the bending section to bend in different directions and define its bending angle. The knob device includes a traction wire, a wire-drawing wheel, and an angle control knob. The traction wire is usually adhered to the wire-drawing wheel with an adhesive or welded to the wire-drawing wheel, whereby the traction wire is likely to fall off, the defective rate is high, and its fixing method is difficult and the assembly efficiency is low.

Summary of the Invention

Problems to be Solved by the Invention

[0003] Based on this, there is a need to provide a wire-drawing wheel for an endoscope, an endoscope handle, and an endoscope that can effectively and stably fix the traction wire to improve the success rate of wire fixing, facilitate the wire fixing operation, and improve the assembly efficiency.

Means for Solving the Problems

[0004] The wire drawing wheel for the endoscope includes a mounting portion and a winding portion. The mounting portion is used to be rotatably mounted in the casing, and the winding portion is provided on the mounting portion. Two winding grooves are provided on the outer wall of the winding portion. The two winding grooves are arranged at intervals along the axial direction of the winding portion. Each winding groove is provided to extend along the circumferential direction of the winding portion. Lead wire holes are provided on the groove walls of the two winding grooves. A cavity is provided in the winding portion, and each lead wire hole communicates with the cavity respectively.

[0005] In the process of winding the wire by the above-mentioned wire drawing wheel for the endoscope, both ends of the traction wire are distributed on the opposite sides of the winding portion. Next, both ends of the traction wire are wound around the two winding grooves corresponding to the opposite directions. In this way, when the winding portion rotates along one direction, one end of the traction wire is in a release state and the other end is in a winding state, thereby realizing the control of the bending portion bending in different directions. Since the two winding grooves are provided with lead wire holes communicating with the cavity, after the traction wire is wound, the end of the wire can be drawn into the cavity through one lead wire hole and then drawn out from the other lead wire hole through the cavity. By repeating this way, the end of the traction wire can be stably fixed to the winding portion. Compared with the conventional adhesion or welding method, this design improves the structure of the winding portion, so there is no need to separately add fixing parts or use external devices, and reliable fixing of the traction wire can be realized, which is beneficial to improving the fixing efficiency of the wire. At the same time, it is beneficial to improving the convenience of the wire fixing operation and improving the assembly efficiency.

[0006] In one embodiment, at least two of the lead wire holes are provided on the groove wall of each winding groove, and the at least two lead wire holes are arranged at intervals along the circumferential direction of the winding portion.

[0007] In one embodiment, at least two concave grooves are provided on the inner wall of the cavity. The at least two concave grooves are arranged at intervals along the circumferential direction of the winding portion. Each concave groove is provided to extend along the axial direction of the winding portion and communicates with two of the winding grooves respectively to form each lead wire hole.

[0008] In one embodiment, a winding block is formed between two adjacent concave grooves. The winding block is used for winding the traction wire.

[0009] In one embodiment, a stopper protrusion is provided on the mounting portion or the winding portion. The stopper protrusion is used to fit with a stopper structure in the casing to limit the rotation range of the mounting portion.

[0010] In one embodiment, a positioning hole is provided on the mounting portion or the winding portion. The positioning hole is used to fit with a positioning structure in the casing to prevent the rotation of the mounting portion.

[0011] In one embodiment, a first snap - fit portion is provided on the mounting portion. The first snap - fit portion is used to engage and fit with a second snap - fit portion on the angle control knob.

[0012] In one embodiment, three convex rings are provided on the winding portion. The three convex rings are arranged at intervals along the axial direction of the winding portion, and a winding groove is formed between two adjacent convex rings.

[0013] The endoscope handle includes a casing, a traction wire, and the above - mentioned endoscope wire drawing wheel. The winding portion is rotatably mounted in the casing through the mounting portion. Both ends of the traction wire are respectively wound in two corresponding winding grooves, and both ends of the traction wire are bored through at least two of the lead wire holes.

[0014] The above-described endoscope handle adopts the above-described wire drawing wheel for the endoscope. In the process of winding the wire, both ends of the traction wire are distributed on opposite sides of the winding portion. Next, both ends of the traction wire are respectively wound around two winding grooves corresponding to opposite directions. In this way, when the winding portion rotates along one direction, one end of the traction wire is in a release state and the other end is in a winding state, thereby realizing the control for the bending portion to bend in different directions. Since the two winding grooves are provided with lead wire holes communicating with the cavity, after the traction wire is wound, the end of the wire can be drawn into the cavity through one lead wire hole and then drawn out from the other lead wire hole through the cavity. By repeating this way, the end of the traction wire can be stably fixed to the winding portion. Compared with the conventional adhesion or welding method, this design can realize reliable fixation of the traction wire without the need to separately add fixing parts or utilize external devices by improving the structure of the winding portion, which is beneficial to improving the fixation efficiency of the wire. At the same time, it is beneficial to improving the convenience of the wire fixing operation and improving the assembly efficiency.

[0015] The endoscope includes the above-described endoscope handle.

[0016] The above-described endoscope adopts the above-described endoscope handle. In the process of winding the wire, both ends of the traction wire are distributed on opposite sides of the winding portion, and then, the two ends of the traction wire are respectively wound around two winding grooves corresponding to opposite directions. In this way, when the winding portion rotates along one direction, one end of the traction wire is in a released state and the other end is in a winding state, thereby realizing the control for the bending portion to bend in different directions. Since the two winding grooves are provided with lead wire holes communicating with the cavity, after the traction wire is wound, the end of the wire can be drawn into the cavity through one lead wire hole and further drawn out from the other lead wire hole through the cavity. By repeating this way, the end of the traction wire can be stably fixed to the winding portion. Compared with the conventional adhesion or welding method, this design can realize reliable fixation of the traction wire without the need to separately add fixing parts or use external devices by improving the structure of the winding portion, which is beneficial to improving the fixing efficiency of the wire. At the same time, it is beneficial to improving the convenience of the wire fixing operation and improving the assembly efficiency.

Brief Description of the Drawings

[0017] The drawings constituting a part of this application are used to provide a further understanding of the present invention. The schematic embodiments and their descriptions of the present invention are used to interpret the present invention and do not constitute an undue limitation on the present invention. For a clearer description of the technical solutions in the embodiments of the present invention, the drawings necessary for use in the following description of the embodiments are briefly introduced below. Obviously, the drawings in the following description are only a part of the embodiments of the present invention. Those skilled in the art can obtain other drawings based on these drawings without creative labor.

Figure 1

Figure 2

Figure 3

Figure 4

Embodiments for Carrying out the Invention

[0018] To more clearly understand the above objects, features, and advantages of the present invention, specific embodiments of the present invention will be described in detail below with reference to the drawings. In the following description, many specific details are described in order to fully understand the present invention. However, the present invention can be implemented in many other forms different from the embodiments described here, and those skilled in the art can make similar improvements without departing from the spirit of the present invention. Therefore, the present invention is not limited to the specific examples disclosed below.

[0019] In one embodiment, referring to FIGS. 1 and 3, the endoscopic wire-drawing wheel 100 includes a mounting portion 110 and a winding portion 120. The mounting portion 110 is used to be rotatably mounted within the casing. The winding portion 120 is provided on the mounting portion 110, and two winding grooves 121 are provided on the outer wall of the winding portion 120. The two winding grooves 121 are arranged at intervals along the axial direction of the winding portion 120, and each winding groove 121 is provided to extend along the circumferential direction of the winding portion 120. Lead wire holes 122 are provided on the groove walls of both of the two winding grooves 121, and a cavity 123 is provided within the winding portion 120. Each lead wire hole 122 communicates with the cavity 123 respectively.

[0020] The above-described endoscope wire-drawing wheel 100, in the process of winding the wire, distributes both ends of the traction wire on opposite sides of the winding portion 120, and then winds both ends of the traction wire around two winding grooves 121 corresponding to opposite directions. In this way, when the winding portion 120 rotates along one direction, one end of the traction wire is in a release state and the other end is in a winding state, thereby realizing the control of the bending portion bending in different directions. Since the two winding grooves 121 are provided with lead wire holes 122 communicating with the cavity 123, after the traction wire is wound, the end of the wire can be drawn into the cavity 123 through one lead wire hole 122 and further drawn out from the other lead wire hole 122 through the cavity 123. By repeating this way, the end of the traction wire can be stably fixed to the winding portion 120. Compared with the conventional adhesion or welding method, this design can improve the structure of the winding portion 120, eliminating the need to separately add fixing parts or use external devices, realizing reliable fixing of the traction wire, being beneficial to improving the fixing efficiency of the wire, and at the same time being beneficial to improving the convenience of the wire fixing operation and improving the assembly efficiency.

[0021] In addition, the number of lead wire holes 122 in each winding groove 121 may be one, two, three or more. When there are two or more lead wire holes 122 in each winding groove 121, there are multiple forms in which the end of the traction wire penetrates between the lead wire holes 122. In this regard, this embodiment is not specifically limited as long as the traction wire can penetrate between the lead wire holes 122 and be stably fixed.

[0022] Optionally, the connection form between the winding portion 120 and the mounting portion 110 may be bolt connection, screw-threaded sleeve connection, engagement, rivet connection, welding, adhesion, integral molding method, etc., but is not limited thereto. Also, the integral molding method is a method such as injection molding, 3D printing, etc.

[0023] Furthermore, referring to FIGS. 1 and 3, at least two lead wire holes 122 are provided in the groove walls of each winding groove 121, which are arranged at intervals along the circumferential direction of the winding portion 120. In this embodiment, by increasing the number of lead wire holes 122, the number of penetration methods of the traction wire is increased. In this way, it is not only advantageous to enhance the bonding force between the traction wire and the winding portion 120, but also provides the operator with various penetration method options, making the wire fixing operation more convenient. For example, the end of the traction wire may penetrate between the lead wire holes 122 in the same winding groove 121, or may reciprocally penetrate between the lead wire holes 122 in two adjacent winding grooves 121.

[0024] Furthermore, referring to FIGS. 2 and 4, at least two concave grooves 124 are provided on the inner wall of the cavity 123. The at least two concave grooves 124 are arranged at intervals along the circumferential direction of the winding portion 120. Each concave groove 124 is provided to extend along the axial direction of the winding portion 120 and communicates with two winding grooves 121 respectively to form each lead wire hole 122. Thereby, the traction wires wound between the lead wire holes 122 in the two winding grooves 121 are all located in the concave grooves 124 and do not enter the cavity 123, avoiding the influence on the installation of the wire pulling wheel 100 for endoscopes.

[0025] In one embodiment, referring to FIGS. 2 and 4, a winding block 1241 is formed between two adjacent concave grooves 124. The winding block 1241 is used for winding the traction wire, provides winding support for the traction wire, and further strengthens the fixing of the wire.

[0026] In one embodiment, referring to FIGS. 2 and 4, a stopper protrusion 1251 is provided on the mounting portion 110 or the winding portion 120. The stopper protrusion 1251 is used to fit with a stopper structure in the casing to limit the rotation range of the mounting portion 110. Thereby, when the wire pulling wheel 100 for endoscope rotates, the stopper protrusion 1251 fits with the stopper structure in the casing, so that the wire pulling wheel 100 for endoscope can no longer rotate continuously. In this way, the rotation range of the wire pulling wheel 100 for endoscope is effectively limited, and the traction wire is prevented from breaking due to excessive rotation, ensuring the safety of using the endoscope.

[0027] In one embodiment, referring to FIGS. 2 and 4, a positioning hole 1252 is provided in the mounting portion 110 or the winding portion 120. The positioning hole 1252 is used to fit with a positioning structure in the casing to prevent the rotation of the mounting portion 110. Since the wire pulling wheel 100 for endoscope is in a state where it can rotate freely, the mounting portion 110 rotates left and right during the process of winding the wire, increasing the difficulty of the operation of winding the wire. Therefore, in this embodiment, the positioning hole 1252 is provided. During the process of winding the wire, the positioning hole 1252 is fitted with the positioning structure in the casing, and further a fastening member is inserted into the positioning hole 1252 and the positioning structure to limit the rotation of the mounting portion 110 and achieve temporary fixation. When the winding of the wire is completed, the fastening member may be removed from the positioning hole 1252. Here, the fastening member may be a pin shaft or the like, but is not limited thereto.

[0028] Note that the positioning hole 1252 may have a hole structure such as a semi-circular shape, a square shape, or a semi-elliptical shape.

[0029] In one embodiment, referring to FIGS. 2 and 3, the mounting portion 110 is provided with a first snap-fit portion 111. The first snap-fit portion 111 is used to engage and fit with the second snap-fit portion on the angle control knob. In this way, by fitting the first snap-fit portion 111 with the second snap-fit portion, the mounting portion 110 and the angle control knob are stably connected.

[0030] Optionally, the first snap-fit portion 111 is a locking groove, the second snap-fit portion is a snap-fit protrusion, or the first snap-fit portion 111 is a snap-fit protrusion and the second snap-fit portion is a locking groove.

[0031] In one embodiment, referring to FIGS. 1 and 3, the winding portion 120 is provided with three convex rings 125. The three convex rings 125 are arranged at intervals along the axial direction of the winding portion 120, and a winding groove 121 is formed between two adjacent convex rings 125. In this way, the winding groove 121 is effectively isolated by the convex rings 125, and interference between wires can be effectively prevented.

[0032] In one embodiment, referring to FIG. 1, the endoscope handle includes a casing, a traction wire, and the endoscope wire pulling wheel 100 in the above embodiment. The winding portion 120 is rotatably mounted in the casing via the mounting portion 110. Both ends of the traction wire are respectively wound in two corresponding winding grooves 121, and both ends of the traction wire are respectively drilled through at least two lead wire holes 122.

[0033] In the above-described endoscope handle, the above-described wire drawing wheel 100 for an endoscope is adopted. In the process of winding the wire, both ends of the traction wire are distributed on opposite sides of the winding portion 120. Next, both ends of the traction wire are wound around two winding grooves 121 corresponding to opposite directions. In this way, when the winding portion 120 rotates along one direction, one end of the traction wire is in a release state and the other end is in a winding state, thereby realizing the control of the bending portion to bend in different directions. Since the two winding grooves 121 are provided with lead wire holes 122 communicating with the cavity 123, after the traction wire is wound, the end of the wire can be drawn into the cavity 123 through one lead wire hole 122 and then drawn out from the other lead wire hole 122 through the cavity 123. By repeating this way, the end of the traction wire can be stably fixed to the winding portion 120. Compared with the conventional adhesion or welding method, this design can realize reliable fixation of the traction wire without the need to separately add fixing parts or use external devices by improving the structure of the winding portion 120, which is advantageous for improving the fixing efficiency of the wire. At the same time, it is advantageous for improving the convenience of the wire fixing operation and improving the assembly efficiency.

[0034] In one embodiment, referring to FIG. 1, the endoscope includes the endoscope handle in the above-described embodiment.

[0035] The above-described endoscope adopts the above-described endoscope handle. In the process of winding the wire, both ends of the traction wire are distributed on opposite sides of the winding portion 120. Next, both ends of the traction wire are wound around two winding grooves 121 corresponding to opposite directions. In this way, when the winding portion 120 rotates along one direction, one end of the traction wire is in a release state and the other end is in a winding state, thereby realizing the control for the bending portion to bend in different directions. Since the two winding grooves 121 are provided with lead wire holes 122 communicating with the cavity 123, after the traction wire is wound, the end of the wire can be drawn into the cavity 123 through one lead wire hole 122 and further drawn out from the cavity 123 through another lead wire hole 122. By repeating this way, the end of the traction wire can be stably fixed to the winding portion 120. Compared with the conventional adhesion or welding method, this design can realize reliable fixation of the traction wire without the need to separately add fixing parts or utilize external devices by improving the structure of the winding portion 120, which is beneficial to improving the fixation efficiency of the wire. At the same time, it is beneficial to improving the convenience of the wire fixing operation and improving the assembly efficiency.

[0036] Each technical feature of the above-described embodiments can be arbitrarily combined. For the sake of brevity of description, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, it should be considered to be within the scope described in this specification.

[0037] The above embodiments merely show some embodiments of the present application. Although the description is specific and detailed, it should not be understood as limiting the scope of the invention of the present application. It should be noted that those skilled in the art can make some modifications and improvements within the scope of the present application without departing from the idea of the present application. Therefore, the scope of the patent of the present application shall be subject to the appended claims.

[0038] In the description of the present invention, it should be understood that the orientation or positional relationship indicated by terms such as "center", "vertical direction", "horizontal direction", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial direction", "radial direction", "circumferential direction", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the purpose of making it easier to explain the present invention and simplifying the explanation. It does not mean or imply that the device or element mentioned must have a specific orientation and must be configured and operated in a specific orientation, and should not be construed as limiting the present invention.

[0039] In addition, the terms "first" and "second" are only for the purpose of explanation, and do not mean or imply relative importance or suggest the number of technical features described. Therefore, the features limited by "first" and "second" can implicitly include at least one of the features. In the description of the present invention, unless specifically and explicitly limited, the meaning of "a plurality" is at least two, for example, two, three, etc.

[0040] In the present invention, unless specifically defined and limited, terms such as "attachment", "connection", "connection", "fixation", etc. should be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or integrated. Also, it may be mechanically connected or electrically connected. Also, it may be directly connected or indirectly connected through an intermediate medium, or it may be the communication between two elements or the interaction relationship between two elements. The specific meaning of the above terms in the present invention will be understood by those skilled in the art according to specific situations.

[0041] In the present invention, unless otherwise specifically defined and limited, when a first feature is "above" or "below" a second feature, the first and second features may be in direct contact or may be in indirect contact via an intermediate medium. Also, when a first feature is "above", "upward", or "upper surface" of a second feature, it may only indicate that the first feature is directly above or obliquely above the second feature, or that the horizontal height of the first feature is greater than that of the second feature. When a first feature is "below", "downward", or "lower surface" of a second feature, it may only indicate that the first feature is directly below or obliquely below the second feature, or that the horizontal height of the first feature is smaller than that of the second feature.

[0042] Note that when one element is referred to as being "fixed to" or "provided on" another element, it may be directly present on the other element or there may be intervening elements. When one element is considered to be "connected to" another element, it may be directly connected to the other element or there may be intervening elements. The terms "vertical", "horizontal", "above", "below", "left", "right" and similar expressions used in this specification are for illustrative purposes only and do not represent the only embodiments.

Explanation of Reference Numerals

[0043] 100 wire-drawing wheel, 110 mounting portion, 111 first snap-fit location, 112 abutting projection, 120 winding portion, 121 winding groove, 122 lead wire hole, 123 cavity, 124 concave groove, 1241 winding block, 125 convex ring, 1251 stopper projection, 1252 positioning hole.

Claims

1. An endoscope wire drawing wheel, comprising: a mounting portion and a winding portion, wherein the mounting portion is used for being rotatably mounted in a casing, the winding portion is provided on the mounting portion, two winding grooves are provided on an outer wall of the winding portion, the two winding grooves are arranged at intervals along an axial direction of the winding portion, each winding groove is provided to extend along a circumferential direction of the winding portion, lead wire holes are provided on groove walls of the two winding grooves, a cavity is provided in the winding portion, and each lead wire hole communicates with the cavity respectively, at least two of the lead wire holes are provided on the groove walls of each winding groove at intervals along the circumferential direction of the winding portion, at least two concave grooves are provided on an inner wall of the cavity, the at least two concave grooves are arranged at intervals along the circumferential direction of the winding portion, each concave groove is provided to extend along the axial direction of the winding portion and communicates with the two winding grooves respectively to form each lead wire hole, and the endoscope wire drawing wheel is characterized in that.

2. A winding block is formed between two adjacent concave grooves, and the winding block is used for winding a traction wire, and the endoscope wire drawing wheel according to claim 1 is characterized in that.

3. A stopper protrusion is provided on the mounting portion or the winding portion, and the stopper protrusion is used for fitting with a stopper structure in the casing to limit a rotation range of the mounting portion, and the endoscope wire drawing wheel according to claim 1 is characterized in that.

4. A positioning hole is provided on the mounting portion or the winding portion, and the positioning hole is used for fitting with a positioning structure in the casing to prevent rotation of the mounting portion, and the endoscope wire drawing wheel according to claim 1 is characterized in that.

5. A first snap-fit location is provided on the mounting portion, and the first snap-fit location is used for engaging and fitting with a second snap-fit location on an angle control knob, and the endoscope wire drawing wheel according to claim 1 is characterized in that.

6. The winding portion is provided with three convex rings, and the three convex rings are arranged at intervals along the axial direction of the winding portion, and the winding groove is formed between two adjacent convex rings. The wire drawing wheel for an endoscope according to claim 1, characterized in that.

7. An endoscope handle, including a casing, a traction wire, and the wire drawing wheel for an endoscope according to any one of claims 1 to 6, wherein the winding portion is rotatably mounted in the casing through the mounting portion, and both ends of the traction wire are respectively wound in two corresponding winding grooves, and both ends of the traction wire are respectively drilled through at least two of the lead wire holes. An endoscope handle, characterized in that.

8. An endoscope, characterized in that it includes the endoscope handle according to claim 7.

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