Traction wheel assembly, endoscope handle and endoscope

Abstract

The utility model is suitable for the technical field of endoscopes, and provides a traction wheel assembly, an endoscope handle and an endoscope, the traction wheel assembly comprises a fixing piece, the fixing piece is provided with at least two fixing arms which are arranged in rows at intervals, and a rope penetrating groove is defined between every two adjacent fixing arms; the fixed arms are used for winding traction ropes, and the rope penetrating grooves are used for penetrating the traction ropes, so that the traction ropes are wound on the adjacent fixed arms in a staggered manner; the traction wheel is provided with a mounting hole for mounting the fixing piece, and the fixing piece is fixedly connected with the traction wheel. According to the traction wheel assembly, the traction rope can be quickly locked in the traction wheel, the fixing piece is simple in structure, and the installation process of the fixing piece and the traction wheel is simple.

Description

Technical Field

[0001] The present application relates to the technical field of endoscopes, and in particular to a traction wheel assembly, an endoscope handle and an endoscope. Background Art

[0002] Endoscopes are widely used in modern medicine. During specific use, the insertion part of the endoscope is inserted into the human body through a natural cavity. The distal end of the insertion part is an active bending section, which is connected to a traction rope. The active bending section is bent by pulling the traction rope, thereby controlling the bending direction of the active bending section and acquiring image information of the target position.

[0003] A traction wheel is provided in the endoscope handle, and the traction wheel is fixed to the traction rope. By controlling the rotation of the traction wheel, the length of the traction rope between the active bending section and the traction wheel is adjusted, so as to control the bending angle of the active bending section. In the prior art, the traction rope is usually wound around a threaded fastener and fixed on the traction wheel through the threaded fastener, which has a complex structure and a cumbersome installation process. Utility Model Content

[0004] The purpose of this application is to provide a traction wheel assembly, an endoscope handle and an endoscope to solve the technical problems existing in the prior art, mainly including the following contents:

[0005] A first aspect of the present application provides a traction wheel assembly, comprising:

[0006] A fixing member, wherein the fixing member has at least two fixing arms arranged in a row and at intervals, and a rope threading groove is defined between two adjacent fixing arms; the fixing arms are used to wind the traction rope, and the rope threading groove is used to thread the traction rope, so that the traction rope is staggered and wound around the adjacent fixing arms;

[0007] A traction wheel is provided with a mounting hole for mounting the fixing member, and the fixing member is fixedly connected to the traction wheel.

[0008] In order to better implement the present application, the following configuration structure is particularly adopted: at least two of the fixed arms are distributed along the radial direction of the traction wheel.

[0009] To further implement the present application, the following configuration is particularly adopted: at least one first anti-rotation portion is provided on the circumferential side wall of the fixing portion of the fixing member, and the first anti-rotation portion is limitedly matched with the first anti-rotation groove of the traction wheel; and / or,

[0010] At least one second anti-rotation portion is arranged on the end surface of the fixing portion where the fixing arm is located, and the second anti-rotation portion is limitedly matched with the second anti-rotation groove.

[0011] To further better implement the present application, the following configuration is particularly adopted: in the circumferential direction of the fixing portion, the first anti-rotation portion is an anti-rotation protrusion; or

[0012] A rotation-stopping surface is arranged on the circumferential side wall of the fixing portion. When two first rotation-stopping portions are provided, the rotation-stopping surface is located between the two first rotation-stopping portions.

[0013] In order to better realize the present application, the following setting structure is particularly adopted: the first anti-rotation part is arranged along the vertical direction of the fixed arm, and the two first anti-rotation parts are symmetrically distributed along the anti-rotation surface.

[0014] In order to further better realize the present application, the following setting structure is particularly adopted: the fixing part is further provided with a glue injection hole along the axial direction, and the glue injection hole penetrates the fixing part and is connected with the rope threading groove.

[0015] In order to better implement the present application, the following configuration is particularly adopted: the diameter of the glue injection hole decreases along the direction from the fixing part to the insertion part.

[0016] In order to better realize the present application, the following setting structure is particularly adopted: a support groove is opened on the circumferential side wall of the traction wheel, the support groove is located on one side of the mounting hole, and the support groove is connected to the mounting hole.

[0017] A second aspect of the present application provides an endoscope handle, comprising the above-mentioned traction wheel assembly.

[0018] A third aspect of the present application provides an endoscope, comprising the above-mentioned endoscope handle.

[0019] Compared with the prior art, this application has at least the following technical effects:

[0020] The traction wheel assembly provided by the present application includes a fixing member and a traction wheel, wherein the fixing member is fixedly mounted on the traction wheel. The fixing member has at least two fixing arms arranged at intervals, and a rope threading groove is defined between two adjacent fixing arms. The fixing arm is used to wind the traction rope, and the traction rope can pass through the rope threading groove and be staggered and wound around the two adjacent fixing arms. Through the traction wheel assembly provided by the present application, the fixing member can lock the traction rope on the traction wheel only by inserting the fixing member into the traction wheel and rotating it. The fixing member has a simple structure, and the assembly process of the fixing member and the traction wheel is convenient, so the traction rope can be quickly locked on the traction wheel. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required for use in the embodiments of the present application or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0022] Figure 1 This is a schematic diagram of the structure of the traction wheel assembly in this application. Figure 1 ;

[0023] Figure 2 This is a schematic diagram of the structure of the traction wheel assembly in this application. Figure 2 ;

[0024] Figure 3 yes Figure 2 Enlarged view of part A in the middle;

[0025] Figure 4 This is a schematic diagram of the structure of the traction wheel in this application. Figure 1 ;

[0026] Figure 5 This is a schematic diagram of the structure of the traction wheel in this application. Figure 2 ;

[0027] Figure 6 This is a schematic diagram of the structure of the traction wheel in this application. Figure 3 ;

[0028] Figure 7 This is a schematic diagram of the structure of the fixing member in this application. Figure 1 ;

[0029] Figure 8 This is a schematic diagram of the structure of the traction wheel in this application. Figure 2 ;

[0030] Fig. 9 This is a schematic diagram of the structure of the traction wheel in this application. Figure 3 ;

[0031] Fig.10 It is a schematic diagram of the matching structure of the traction wheel and the traction rope in this application.

[0032] In the figure: 10-fixing member; 11-insertion part; 12-fixing part; 121-first anti-rotation part; 122-anti-rotation surface; 13-fixing arm; 111-rope threading groove; 14-glue injection hole; 20-traction wheel; 21-installation hole; 22-accommodating groove; 23-supporting groove; 24-first anti-rotation groove; 30-traction rope. DETAILED DESCRIPTION

[0033] The following description provides many different embodiments or examples for implementing different features of the present application. The components and arrangements described in the following specific examples are only used to simplify the present application and are only used as examples, not to limit the present application.

[0034] In order to make the purpose, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present application. Therefore, the following detailed description of the embodiments of the present application provided in the drawings is not intended to limit the scope of the application for which protection is sought, but merely represents the selected embodiments of the present application.

[0035] In this application, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral one; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, and it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to the specific circumstances. In addition, the terms "first", "second", "third", etc. are only used to distinguish the description and cannot be understood as indicating or implying relative importance.

[0036] In the present application, unless otherwise clearly specified and limited, a first feature being above or below a second feature may include the first and second features being in direct contact, or may include the first and second features not being in direct contact but being in contact through another feature between them. Moreover, a first feature being above, above, and above a second feature includes the first feature being directly above and obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being below, below, and below a second feature includes the first feature being directly below and obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0037] The inventor found in the research that in the related art, a traction wheel is provided in the endoscope handle, and the traction wheel is fixed with the traction rope. By controlling the rotation of the traction wheel, the length of the traction rope between the active bending section and the traction wheel is adjusted, so as to control the bending angle of the active bending section. In the prior art, the traction rope is usually wound around the threaded fastener and locked on the traction wheel by the threaded fastener. Therefore, it is necessary to open a threaded hole matching the threaded fastener on the traction wheel, but the traction wheel and the threaded fastener are prone to rotation, and the traction rope will rotate with the threaded fastener, so that the traction force of the threaded fastener on the traction rope becomes weak, and the structure is relatively complex, and the installation process is cumbersome.

[0038] In view of this, the first aspect of the present application provides a traction wheel assembly installed in an endoscope handle, such as Figure 1-Figure 10 As shown, including:

[0039] The fixing member 10 is a T-shaped structure as a whole. The fixing member 10 includes an insertion portion 11 and a fixing portion 12. The insertion portion 11 is arranged below the fixing portion 12, and the insertion portion 11 and the fixing portion 12 are arranged coaxially. Optionally, the insertion portion 11 is a fixing arm 13. The fixing member 10 has at least two fixing arms 13 arranged in a row and at intervals. The number of the fixing arms 13 can be two, three, four, etc., which is not limited here. The fixing arms 13 extend along the axis L of the fixing member 10, and when the fixing arms 13 are set to two, the two fixing arms 13 are symmetrically arranged along the axis L.

[0040] A rope threading groove 111 is defined between two adjacent fixed arms 13; the fixed arms 13 are used to wind the traction rope 30, and the rope threading groove 111 is used to pass the traction rope 30, so that the traction rope 30 is staggered and wound around the adjacent fixed arms 13. Optionally, after the traction rope 30 passes through the rope threading groove 111, the traction rope 30 is wound around the adjacent fixed arms 13 only by rotating the fixing member 10.

[0041] The traction wheel 20 is provided with a mounting hole 21 for mounting the fixing member 10. The fixing hole 21 is arranged along the axial direction of the traction wheel 20. The traction wheel 20 may also be provided with a stop groove. The stop groove cooperates with the fixing portion 12 of the fixing member 10 to limit the fixing member 10 so that the fixing member 10 is fixedly installed in the traction wheel 20.

[0042] In some optional embodiments, a receiving groove 22 is opened on the circumferential side wall of the traction wheel 20 , the receiving groove 22 is communicated with the mounting hole 21 , and the traction rope 30 can be wound around the traction wheel 20 along the receiving groove 22 .

[0043] In some optional embodiments, the outer circumferential shape of the fixed arm 13 near the traction wheel 20 matches the shape of the mounting hole 21 on the traction wheel 20 , and the inner circumferential shape of the fixed arm 13 near the rope threading groove 111 matches the shape of the traction rope 30 .

[0044] Exemplarily, the present application can realize that the traction rope 30 is locked on the traction wheel 20 through the fixing member 10 through the following embodiments. Specifically, the traction rope 30 is first wound around the traction wheel 20, and then the fixing arm 13 of the fixing member 10 is inserted into the mounting hole 21, wherein a portion of the traction rope 30 is passed through the rope threading groove 111 defined by two adjacent fixing arms 13, and the fixing member 10 is rotated to make the traction rope 30 wound around the fixing arm 13, and finally the fixing portion 12 of the fixing member 10 is limitedly matched with the anti-rotation groove of the traction wheel 20, so that the fixing member 10 is fixedly connected to the traction wheel 20, and at the same time, the traction rope 30 is locked on the traction wheel 20 through the fixing member 10.

[0045] In some optional embodiments, after the fixing member 10 is inserted into the mounting hole 21, the two fixing arms 13 of the fixing member 10 are respectively subjected to the pulling force of the traction rope 30 wound thereon, and the pulling forces on the two fixing arms 13 are opposite in direction and equal in magnitude, or when the traction rope 30 is in a taut state under the pulling force, the fixing member 10 will not rotate relative to the traction wheel 20, and the traction wheel 20 does not need to be provided with a rotation-stopping groove to limit it. In some optional embodiments, after the fixing member 10 is inserted into the mounting hole 21, the fixing member 10 and the traction wheel 20 can be fixedly connected by gluing.

[0046] Therefore, the traction wheel assembly provided by the present application includes a fixing member 10 and a traction wheel 20, wherein the fixing member 10 is fixedly mounted on the traction wheel 20. The fixing member 10 has at least two fixing arms 13 arranged at intervals, and a rope threading groove 111 is defined between two adjacent fixing arms 13, and the fixing arms 13 are used to wind the traction rope 30, and the traction rope 30 can pass through the rope threading groove 111 and be staggered and wound on the two adjacent fixing arms 13. Through the traction wheel assembly provided by the present application, the fixing member 10 can lock the traction rope 30 on the traction wheel 20 only by inserting the fixing member 10 into the traction wheel 20 and rotating it. The fixing member 10 has a simple structure, and the assembly process of the fixing member 10 and the traction wheel 20 is convenient, and the traction rope 30 can be quickly locked on the traction wheel 20.

[0047] According to some optional embodiments, at least two fixing arms 13 are distributed along the radial direction of the traction wheel 20 , that is, the extension direction of the fixing arms 13 is consistent with the axial direction of the traction wheel 20 , which facilitates the assembly of the fixing member 10 and the traction wheel 20 and is beneficial to locking the traction rope 30 .

[0048] According to some optional embodiments, at least one first stop portion 121 is provided on the circumferential side wall of the fixing portion 12 of the fixing member 10, and the first stop portion 121 is limitedly engaged with the first stop groove 24 of the traction wheel 20; and / or, at least one second stop portion is provided on the end surface where the fixing arm 13 is located in the fixing portion 12, and the second stop portion is limitedly engaged with the second stop groove.

[0049] In the above embodiment, a fixing portion 12 is provided at one end of the fixing arm 13 in the fixing member 10. When the fixing arm 13 is inserted into the mounting hole 21 of the traction wheel 20, the fixing portion 12 is limitedly matched with the anti-rotation groove on the traction wheel 20, so that the fixing member 10 locks the traction rope 30 on the traction wheel 20. Optionally, at least one first anti-rotation portion 121 is provided on the circumferential side wall of the fixing portion 12. In the present application, two first anti-rotation portions 121 are preferably provided, and the two first anti-rotation portions 121 are symmetrically arranged along the axis L of the fixing member 10; at the same time, a first anti-rotation groove 24 corresponding to the first anti-rotation portion 121 is provided on the traction wheel 20, and the first anti-rotation portion 121 can be embedded in the first anti-rotation groove 24, and the two are limitedly matched, so that after the fixing member 10 is inserted into the mounting hole 21, the fixing member 10 is fixedly connected to the traction wheel 20.

[0050] At least one second anti-rotation portion is provided on the end surface where the fixed arm 13 of the fixed part 12 is located, that is, at least one second anti-rotation portion is provided on the end surface of the fixed part 12 adjacent to the traction wheel 20, and the second anti-rotation portion cooperates with the second anti-rotation groove to better realize the locking of the fixing member 10 on the traction rope 30. In some optional embodiments, the second anti-rotation portion extends along the axial direction of the fixing member 10, and the extension length of the second anti-rotation portion is less than the length of the fixed arm 13. The second anti-rotation portion can be cylindrical or hemispherical, etc., which is not limited here, and the second anti-rotation portion can be arranged at any position of the end surface where the fixed arm 13 is located, and the second anti-rotation portion is arranged in the vertical direction of the first anti-rotation portion 121.

[0051] In the above embodiment, the shape of the first anti-rotation groove 24 matches the shape of the first anti-rotation portion 121; the shape of the second anti-rotation groove matches the shape of the second anti-rotation portion.

[0052] According to some optional embodiments, in the circumferential direction of the fixing portion 12, the first anti-rotation portion 121 is an anti-rotation protrusion; the anti-rotation protrusion extends in a direction away from the axis L of the fixing member 10. In some optional implementations, the anti-rotation protrusion is an arc protrusion, a rectangular protrusion, a cube protrusion, etc. The anti-rotation protrusion can provide a better traction function for the fixing member 10. At the same time, the operator can assemble the fixing member 10 on the traction wheel 20 more quickly and conveniently by holding the anti-rotation protrusion.

[0053] In some optional embodiments, the first anti-rotation portion 121 may be an anti-rotation groove, and the corresponding first anti-rotation groove 24 may be an anti-rotation protrusion.

[0054] Alternatively, a rotation-stopping surface 122 is provided on the circumferential side wall of the fixing portion 12, and when two first rotation-stopping portions 121 are provided, the rotation-stopping surface 122 is located between the two first rotation-stopping portions 121. When only a rotation-stopping protrusion is provided on the circumference of the fixing member 10, if the fixing member 10 is pulled by the traction rope 30, the rotation-stopping protrusion will be damaged due to the concentrated force, while the rotation-stopping surface 122 can increase the contact surface between the fixing member 10 and the traction wheel 20, disperse the force on the rotation-stopping protrusion, and ensure the service life of the fixing member 10.

[0055] According to some optional embodiments, the first anti-rotation part 121 is arranged along the vertical direction of the fixed arm 13, and the two first anti-rotation parts 121 are symmetrically distributed along the anti-rotation surface 122. When two first anti-rotation parts 121 are arranged, the arrangement direction of the first anti-rotation parts 121 is perpendicular to the axis L of the fixing member 10, so as to fix the fixing member 10 in the traction wheel 20; when the traction rope 30 is pulled, the two symmetrically arranged first anti-rotation parts 121 may be subjected to opposite forces and cancel each other out, thus avoiding the situation that when only one first anti-rotation part 121 is provided, the first anti-rotation part 121 is subjected to concentrated force and is easily damaged.

[0056] In some optional embodiments, the fixing member 10 is configured so that after the traction rope 30 is installed in place, the end surface of the fixing portion 12 facing away from the fixing arm 13 is flush with the end surface of the traction wheel 20, so that when the traction wheel assembly is installed on the endoscope handle, it can be stably installed with other components.

[0057] According to some optional embodiments, the fixing portion 12 is further provided with a glue injection hole 14 along the axial direction, and the glue injection hole 14 passes through the fixing portion 12 and is connected with the rope threading groove 111. When the fixing member 12 is installed in the traction wheel 20, by injecting glue into the glue injection hole 14, the glue will flow into the rope threading groove 111 through the glue injection hole 14, and then flow into the traction rope 30 inserted in the rope threading groove 111, and the two fixing arms 13 that define the rope threading groove 111, thereby realizing the fixed connection between the fixing member 10 and the traction rope 30; in some optional embodiments, the rope threading groove 111 is connected with the receiving groove 22 provided on the circumferential side wall of the traction wheel 20, and the glue can flow into the receiving groove 22 through the rope threading groove 111, thereby further realizing the fixed connection among the fixing member 10, the traction rope 30 and the traction wheel 20, so that the locking effect of the fixing member 10 on the traction rope 30 is more reliable.

[0058] According to some optional embodiments, the diameter of the glue injection hole 14 decreases from the fixing portion 12 to the insertion portion 11. The glue injection hole 14 is in the shape of an inverted truncated cone, that is, the inner wall of the glue injection hole 14 is an inclined surface, which facilitates the injection of glue into the glue injection hole 14 and quickly and smoothly flows into the rope threading groove 111 and the receiving groove 22, thereby avoiding the overflow of the glue.

[0059] According to some optional embodiments, a support groove 23 is provided on the circumferential side wall of the traction wheel 20, the support groove 23 is located on one side of the mounting hole 21, and the support groove 23 is connected to the mounting hole 21. Exemplarily, the support groove 23 is a through groove, and the support groove 23 is also connected to the receiving groove 22. The inner wall shape of the support groove 23 matches the outer peripheral surface shape of the fixed arm 13 close to the side of the support groove 23, and the length of the support groove 23 is greater than the diameter of the mounting hole 21; when the traction rope 30 is locked in the traction wheel 20 through the fixing member 10, the curved section formed by the winding of the traction rope 30 on the fixed arm 13 can be accommodated in the support groove 23, thereby increasing the contact area between the traction wheel 20 and the traction rope 30, and the support groove 23 provides a more reliable support effect for the traction rope 30.

[0060] A second aspect of the present application provides an endoscope handle, comprising the above-mentioned traction wheel assembly.

[0061] A third aspect of the present application provides an endoscope, comprising the above-mentioned endoscope handle.

[0062] It should be noted that, in this article, the terms "comprise", "include" or any other variant thereof are intended to cover non-exclusive inclusion, so that the process, method, article or device including a series of elements includes not only those elements, but also includes other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprise one..." do not exclude the presence of other identical elements in the process, method, article or device including the element. In addition, it should be pointed out that the scope of the methods and devices in the embodiments of the present application is not limited to performing functions in the order shown or discussed, and may also include performing functions in a substantially simultaneous manner or in reverse order according to the functions involved, for example, the described method may be performed in an order different from that described, and various steps may also be added, omitted, or combined. In addition, the features described with reference to certain examples may be combined in other examples.

[0063] The above are only preferred embodiments of the present application and are not intended to limit the present application. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present application should be included in the protection scope of the present application.

Claims

1. A traction wheel assembly, characterized in that: include: A fixing member (10), the fixing member (10) having at least two fixing arms (13) arranged in a row and at intervals, a rope threading groove (111) being defined between two adjacent fixing arms (13); the fixing arms (13) being used for winding a traction rope (30), and the rope threading groove (111) being used for threading the traction rope (30), so that the traction rope (30) is staggeredly wound around adjacent fixing arms (13); A traction wheel (20), wherein a mounting hole (21) for mounting the fixing member (10) is provided on the traction wheel (20), and the fixing member (10) is fixedly connected to the traction wheel (20).

2. The traction wheel assembly according to claim 1, characterized in that: At least two of the fixed arms (13) are distributed along the radial direction of the traction wheel (20).

3. The traction wheel assembly according to claim 1, characterized in that: At least one first anti-rotation portion (121) is provided on the circumferential side wall of the fixing portion (12) of the fixing member (10), and the first anti-rotation portion (121) is limitedly matched with the first anti-rotation groove (24) of the traction wheel (20); and / or, At least one second anti-rotation portion is provided on the end surface of the fixing portion (12) where the fixing arm (13) is located, and the second anti-rotation portion is limitedly engaged with the second anti-rotation groove.

4. The traction wheel assembly according to claim 3, characterized in that: In the circumferential direction of the fixing portion (12), the first anti-rotation portion (121) is an anti-rotation protrusion; or A rotation-stopping surface (122) is provided on the circumferential side wall of the fixing portion (12); when two first rotation-stopping portions (121) are provided, the rotation-stopping surface (122) is located between the two first rotation-stopping portions (121).

5. The traction wheel assembly according to claim 4, characterized in that: The first anti-rotation portion (121) is arranged along the vertical direction of the fixed arm (13), and the two first anti-rotation portions (121) are symmetrically distributed along the anti-rotation surface (122).

6. The traction wheel assembly according to any one of claims 3 to 5, characterized in that: The fixing portion (12) is also provided with a glue injection hole (14) along the axial direction, and the glue injection hole (14) passes through the fixing portion (12) and is connected to the rope threading groove (111).

7. The traction wheel assembly according to claim 6, characterized in that: The diameter of the glue injection hole (14) decreases along the direction from the fixing portion (12) to the insertion portion (11).

8. The traction wheel assembly according to claim 1, wherein: A supporting groove (23) is provided on the circumferential side wall of the traction wheel (20), the supporting groove (23) is located on one side of the mounting hole (21), and the supporting groove (23) is communicated with the mounting hole (21).

9. An endoscope handle, characterized in that: The utility model comprises a traction wheel assembly as described in any one of claims 1 to 8.

10. An endoscope, characterized in that: Comprising the endoscope handle as described in claim 9.

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