WO2026017082A1 - Traction rope guide assembly, endoscope handle, and endoscope - Google Patents

Abstract

A traction rope guide assembly, an endoscope handle, and an endoscope. The present invention relates to the technical field of medical instruments. The traction rope guide assembly comprises a first rotary support member and a second rotary support member. The first rotary support member and the second rotary support member are sleeved on a positioning post or a positioning sleeve of a housing. A first limiting groove is formed in the circumferential direction of the first rotary support member. The first limiting groove is used for supporting a first traction section. The first limiting groove is also used for limiting the radial displacement of the first traction section. A second limiting groove is formed in the circumferential direction of the second rotary support member. The second limiting groove is used for supporting a second traction section. The second limiting groove is also used for limiting the radial displacement of the second traction section. The traction rope guide assembly can guide and limit a traction rope, preventing the traction rope from interfering with the internal structure of the handle housing.

Description

A traction rope guide assembly, an endoscope handle, and an endoscope. Technical Field

This utility model relates to the field of medical device technology, and in particular to a traction rope guide assembly, an endoscope handle, and an endoscope.

Background Technology

The endoscope includes an insertion section, a handle, and a display device. The distal end of the insertion section is an active bending section. A traction rope is installed inside the handle. The distal end of the traction rope is connected to the active bending section, and the proximal end is wound around a dial. The traction rope is in a taut state. By turning the dial, the traction rope can move synchronously in opposite directions, thereby bending the active bending section of the insertion section.

The handle contains not only a traction rope, but also a cable harness, instrument channel, negative pressure suction channel, positioning post, fixing hole, mounting base, and other structures, resulting in a complex and compact internal structure. In addition, the irregular structure of the handle shell and its small distal dimension make it easy for the traction rope to interfere with the internal structure of the handle. On the other hand, when the traction rope moves synchronously in opposite directions, the taut section of the traction rope is prone to friction with the shell or internal structure, affecting the service life of the traction rope. The slack section of the traction rope is prone to entanglement or jamming with the internal structure of the shell, affecting the active bending section's transition from a bent state to a straight state.

Therefore, providing a guiding component that can guide a traction rope has become a technical problem that urgently needs to be solved by those skilled in the art.

Utility Model Content

This utility model discloses a traction rope guide assembly, an endoscope handle, and an endoscope to solve the technical problem in related technologies where the traction rope easily interferes with the structure inside the handle.

To solve the above problems, the present invention adopts the following technical solution:

This utility model discloses a traction rope guide assembly for use in endoscopes. The traction rope guide assembly includes a first rotating support and a second rotating support. The first and second rotating support are sleeved on the positioning post or positioning sleeve of the housing. The first rotating support has a first limiting groove formed in the circumferential direction, which supports the first traction segment and also limits the radial displacement of the first traction segment. The second rotating support has a second limiting groove formed in the circumferential direction, which supports the second traction segment and also limits the radial displacement of the second traction segment.

The endoscope handle of this utility model includes a housing and a traction rope guide assembly. The traction rope guide assembly is the traction rope guide assembly described in any of the technical solutions of this utility model. The housing includes a first housing and a second housing. The first housing is provided with one of a positioning post and a positioning sleeve, and the second housing is provided with the other of a positioning post and a positioning sleeve. The positioning post is installed in the positioning sleeve.

The endoscope of this utility model includes a handle, an insertion part, and a display device. The handle is an endoscope handle as described in any of the technical solutions of this utility model. The handle is connected to the insertion part and also to the display device.

The technical solution adopted in this utility model can achieve the following beneficial effects:

The traction rope guiding assembly of this utility model includes a first rotating support and a second rotating support. The first rotating support has a first limiting groove for supporting a first traction segment, and the second rotating support has a second limiting groove for supporting a second traction segment. Through the supporting action of the first and second limiting grooves, the extension direction of the first and second traction segments can be changed, so that the extension direction of the traction rope adapts to the internal structure of the handle housing, avoiding interference between the traction rope and the internal structure of the handle housing. Moreover, when the traction rope moves, the radial displacement of the traction rope can be limited to prevent excessive movement of the traction rope, which could cause friction between the tensioned section of the traction rope and the housing or the internal structure of the housing, or cause the slack section of the traction rope to become entangled or stuck with the internal structure of the housing.

The traction rope guiding assembly of this utility model can guide and limit the traction rope through the first rotating support and the second rotating support, thus solving the technical problem in related technologies that the traction rope is prone to interference with the structure inside the handle.

On the other hand, in the traction rope guiding assembly of this utility model, the first rotating support and the second rotating support are sleeved on the positioning post or positioning sleeve of the housing. The positioning post and the positioning sleeve are the assembly and fixing parts of the housing. By mounting the first rotating support and the second rotating support on the positioning post or positioning sleeve, the first rotating support and the second rotating support do not need an additional mounting base, which helps to simplify the internal structure of the handle and optimize the internal space layout of the handle.

Attached Figure Description

To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

Figure 1 is a schematic diagram of an endoscope according to an embodiment of this application;

Figure 2 is a partial schematic diagram of the endoscope in an embodiment of this application;

Figure 3 is an enlarged view of part A in Figure 2;

Figure 4 is a schematic diagram of the first housing without the traction rope guide assembly installed in the embodiment of this application;

Figure 5 is a schematic diagram of the first housing mounting the traction rope guide assembly according to an embodiment of this application;

Figure 6 is an enlarged view of part B in Figure 5;

Figure 7 is an enlarged view of part C in Figure 5;

Figure 8 is a schematic diagram of the second housing according to an embodiment of this application.

In the figure: 110, first rotating support; 111, first limiting groove; 112, first body; 113, first limiting part; 120, second rotating support; 121, second limiting groove; 122, second body; 123, second limiting part; 130, first limiting post; 140, second limiting post; 200, handle; 210, housing; 210a, first housing; 210b, second housing; 211, positioning post; 212, positioning sleeve; 310, first traction section; 320, second traction section; 330, rotating wheel; 341, first lead-out part; 342, second lead-out part; 410, instrument plug; 420, instrument tube; 500, insertion part.

Detailed Implementation

To make the objectives, technical solutions, and advantages of this utility model clearer, the technical solutions of this utility model will be described in detail below. Obviously, the described embodiments are only a part of the embodiments of this utility model, and not all of them. Based on the embodiments of this utility model, all other implementation methods obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

The terms "first," "second," etc., used in the specification and claims of this application are used to distinguish similar objects and not to describe a specific order or sequence. It should be understood that such use of data can be interchanged where appropriate so that embodiments of this application can be implemented in orders other than those illustrated or described herein, and the objects distinguished by "first," "second," etc., are generally of the same class and the number of objects is not limited; for example, a first object can be one or more. Furthermore, in the specification and claims, "and/or" indicates at least one of the connected objects, and the character "/" generally indicates that the preceding and following objects are in an "or" relationship.

In the various embodiments of this application, "near end" and "far end" refer to the distance of each component from the user in the usage environment. The end closer to the user is designated as the "near end", and the end farther from the user is designated as the "far end".

The traction rope guide assembly, endoscope handle, and endoscope provided in this application will be described in detail below with reference to Figures 1 to 8, through specific embodiments and application scenarios.

The traction rope guide assembly of this embodiment is applied to an endoscope, specifically to the endoscope handle 200, to guide the traction rope inside the handle 200.

Specifically, the handle 200 has a housing 210, which includes a first housing 210a and a second housing 210b. The first housing 210a is provided with one of a positioning post 211 and a positioning sleeve 212, and the second housing 210b is provided with the other of the positioning post 211 and the positioning sleeve 212. The positioning post 211 is installed in the positioning sleeve 212, thereby enabling the assembly and fixation of the first housing 210a and the second housing 210b. Figures 2, 4, 5 and 8 show schematic diagrams of the first housing 210a having a positioning post 211 and the second housing 210b having a positioning sleeve 212.

The traction rope guiding assembly of this embodiment includes a first rotating support 110 and a second rotating support 120, as shown in Figures 2, 3, 5, and 7. The first rotating support 110 and the second rotating support 120 are sleeved on the positioning post 211 or the positioning sleeve 212 of the housing 210. Exemplarily, the first rotating support 110 and the second rotating support 120 are fixedly connected to the positioning post 211 or the positioning sleeve 212, and friction occurs between the traction rope and the first rotating support 110 or the second rotating support 120 when the traction rope moves. Alternatively, the first rotating support 110 and the second rotating support 120 can be rotatably connected to the positioning post 211 or the positioning sleeve 212, which helps reduce the frictional force between the traction rope and the first rotating support 110 or the second rotating support 120 when the traction rope moves.

The positioning post 211 and the positioning sleeve 212 are assembly and fixing parts of the housing 210. The first rotating support 110 and the second rotating support 120 are mounted on the positioning post 211 or the positioning sleeve 212, so that the first rotating support 110 and the second rotating support 120 do not need additional mounting bases, which helps to simplify the internal structure of the handle 200 and optimize the internal space layout of the handle 200.

Preferably, the first rotating support 110 and the second rotating support 120 are sleeved on the positioning post 211, as shown in Figures 2, 3, 5, and 7. Since the positioning post 211 has a smaller radial dimension than the positioning sleeve 212, sleeveding the first rotating support 110 and the second rotating support 120 on the positioning post 211 allows the first rotating support 110 and the second rotating support 120 to be made as small as possible, reducing their footprint within the housing 210. Simultaneously, after the positioning post 211 is installed on the positioning sleeve 212, the positioning sleeve 212 can also axially limit the first rotating support 110 and the second rotating support 120, preventing them from slipping out of the positioning post 211 and enhancing the reliability of the assembly of the first rotating support 110 and the second rotating support 120.

Preferably, the first rotating support 110 has a first limiting groove 111 formed in the circumferential direction. The first limiting groove 111 supports the first traction segment 310 and also limits the radial displacement of the first traction segment 310, as shown in Figures 2 and 3. The second rotating support 120 has a second limiting groove 121 formed in the circumferential direction. The second limiting groove 121 supports the second traction segment 320 and also limits the radial displacement of the second traction segment 320. Here, the radial displacement can be a displacement relative to the radial direction of the first traction segment 310 or the second traction segment 320.

Not limited thereto, the traction rope guiding assembly of this embodiment may also include a third rotating support and a fourth rotating support, the structures of which are the same as those of the first rotating support 110 and the second rotating support 120. Specifically, in order to achieve multi-directional bending of the active bending section, the endoscope may also include two traction ropes, in which case the handle 200 has four traction sections, and the third rotating support and the fourth rotating support are used to support and guide the third and fourth traction sections, respectively.

As can be seen, in this embodiment, the number of rotating support members in the traction rope guide assembly is the same as the number of traction sections within the handle 200.

The traction rope guiding assembly of this embodiment, through the supporting effect of the first limiting groove 111 and the second limiting groove 121, can not only change the extension direction of the first traction section 310 and the second traction section 320, so that the extension direction of the traction rope adapts to the internal structure of the housing 210 and avoids interference between the traction rope and the internal structure of the housing 210, but also limit the radial displacement of the traction rope when it moves, so as to avoid excessive movement of the traction rope, which would cause friction between the tensioned section of the traction rope and the housing 210 or the internal structure of the housing 210, or cause the slack section of the traction rope to become entangled or stuck with the internal structure of the housing 210.

In this embodiment, the traction rope guiding assembly can guide and limit the traction rope through the first rotating support 110 and the second rotating support 120, thus solving the technical problem in related technologies that the traction rope is prone to interference with the structure inside the handle 200.

During the research and development process, the inventors also considered directly opening grooves on the positioning post 211 to guide the traction rope. However, the inventors found that because the radial dimension of the positioning post 211 is small, opening grooves on the positioning post 211 would not only result in a shallow groove depth, which is not conducive to guiding and limiting the traction rope, but would also affect the strength of the positioning post 211 and the reliability of the assembly and fixation of the first housing 210a and the second housing 210b.

In this embodiment, the traction rope guiding assembly, by setting a first rotating support 110 and a second rotating support 120, and having the first rotating support 110 and the second rotating support 120 sleeved on the positioning post 211, not only ensures that the guiding assembly reliably guides and limits the traction rope, but also does not affect the strength of the positioning post 211, thus ensuring the reliability of the assembly and fixation of the first housing 210a and the second housing 210b.

According to an optional embodiment, the first rotating support 110 includes a first body 112 and a first limiting portion 113. The first limiting portion 113 is located at both ends of the first body 112, and the diameter of the first limiting portion 113 is larger than the diameter of the first body 112, forming a first limiting groove 111 between the first limiting portion 113 and the first body 112, as shown in Figures 5 and 7. Preferably, the first body 112 and the first limiting portion 113 are an integral structure, which simplifies the production and installation process of the first rotating support 110. The first limiting groove 111 is formed by the first body 112 and the first limiting portions 113 at both ends. The first traction segment 310 is located in the first limiting groove 111, which can guide and limit the first traction segment 310.

According to an optional embodiment, the traction rope guiding assembly further includes a first limiting post 130, which is located at the first rotating support member 110, as shown in Figures 2, 3, 5, and 7. Preferably, the distance between the first limiting post 130 and the first limiting portion 113 is less than the diameter of the first traction segment 310, and the distance between the first limiting post 130 and the bottom of the first limiting groove 111 is greater than the diameter of the first traction segment 310. The first limiting post 130 prevents the first traction segment 310 from slipping out of the first limiting groove 111.

According to an optional embodiment, the second rotating support 120 includes a second body 122 and a second limiting portion 123. The second limiting portion 123 is located at both ends of the second body 122, and the diameter of the second limiting portion 123 is larger than the diameter of the second body 122, forming a second limiting groove 121 between the second limiting portion 123 and the second body 122, as shown in Figures 5 and 7. Preferably, the second body 122 and the second limiting portion 123 are an integral structure, which simplifies the production and installation process of the second rotating support 120. The second limiting groove 121 is formed by the second body 122 and the second limiting portions 123 at both ends. The second traction segment 320 is located within the second limiting groove 121, which can guide and limit the second traction segment 320.

According to an optional embodiment, the traction rope guiding assembly further includes a second limiting post 140, which is located at the second rotating support 120, as shown in Figures 2, 3, 5, and 7. Preferably, the distance between the second limiting post 140 and the second limiting portion 123 is less than the diameter of the second traction segment 320, and the distance between the second limiting post 140 and the bottom of the second limiting groove 121 is greater than the diameter of the second traction segment 320. The provision of the second limiting post 140 prevents the second traction segment 320 from slipping out of the second limiting groove 121.

According to an optional embodiment, the first rotating support 110 is located at the end of the housing 210 away from the rotating wheel 330, and the first rotating support 110 and the first lead-out portion 341 of the first traction section 310 are distributed along the axial direction of the housing 210, as shown in Figures 2 and 3. As shown in Figure 6, the first lead-out portion 341 is a first groove near the rotating wheel 330, which is used to lead out the first traction section 310 passing through the rotating wheel 330. That is, the first rotating support 110 is located in the bending area at the far end of the housing 210. Through the supporting and guiding effect of the first rotating support 110 on the first traction section 310, the extension distribution path of the first traction section 310 is more adapted to the extension distribution characteristics of the housing 210, which is more conducive to the internal structural layout of the housing 210 and avoids interference between the first traction section 310 and other structures inside the housing 210.

According to an optional embodiment, the second rotating support 120 is located at the end of the housing 210 away from the rotating wheel 330, and the second rotating support 120 and the second lead-out portion 342 of the second traction section 320 are distributed along the axial direction of the housing 210, as shown in Figures 2 and 3. As shown in Figure 6, the second lead-out portion 342 is a second groove near the rotating wheel 330, which is used to lead out the second traction section 320 passing through the rotating wheel 330. That is, the second rotating support 120 is located in the bending area at the far end of the housing 210. Through the supporting and guiding effect of the second rotating support 120 on the second traction section 320, the extension distribution path of the second traction section 320 is more adapted to the extension distribution characteristics of the housing 210, which is more conducive to the internal structural layout of the housing 210 and avoids interference between the second traction section 320 and other structures inside the housing 210.

According to an optional embodiment, the second rotating support 120 is also located on the side of the instrument plug 410 away from the insertion portion 500, as shown in Figures 2 and 3. As shown in Figures 2 and 3, the second rotating support 120 being located on the side of the instrument plug 410 closer to the insertion portion 500 will result in a larger bend angle of the second traction section 320 at the second rotating support 120, leading to greater wear and tear when the second traction section 320 is pulled.

Preferably, along the axial direction of the second rotating support 120, the height between the first side of the second limiting groove 121 and the housing 210 is less than the height between the housing 210 and the instrument tube 420, thereby allowing the second traction section 320 and the instrument tube 420 to be offset in the height direction. The first side of the second limiting groove 121 is the side of the second limiting groove 121 away from the housing 210.

The endoscope handle of this embodiment includes a housing 210, which includes a first housing 210a and a second housing 210b. The first housing 210a is provided with one of a positioning post 211 and a positioning sleeve 212, and the second housing 210b is provided with the other of the positioning post 211 and the positioning sleeve 212. The positioning post 211 is installed in the positioning sleeve 212, as shown in Figures 1, 2, 4, 5 and 8.

The endoscope handle in this embodiment also includes a traction rope guide assembly. The traction rope guide assembly is the traction rope guide assembly of any technical solution in this embodiment. The traction rope guide assembly is sleeved on the positioning post 211 or the positioning sleeve 212, as shown in Figures 2 and 5.

The remaining structure inside the housing 210 is the same as that in the prior art, and will not be described in detail here. Figure 2 only shows the main structure inside the housing 210.

The endoscope handle of this embodiment has a traction rope guide component according to any of the technical solutions in this embodiment, which can avoid interference between the traction rope and the internal structure of the housing 210.

The endoscope of this embodiment includes a handle 200, an insertion part 500, and a display device. The handle 200 is an endoscope handle according to any technical solution in this embodiment. The handle 200 is connected to the insertion part 500 and is also connected to the display device, as shown in Figures 1 and 2.

The endoscope of this embodiment has an endoscope handle according to any of the technical solutions in this embodiment, which can prevent the traction rope inside the handle 200 from interfering with the internal structure of the housing 210.

The above description is only a specific embodiment of this utility model, but the protection scope of this utility model is not limited thereto. Any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this utility model should be included within the protection scope of this utility model.

Claims (10)

A traction rope guide assembly for use in an endoscope, characterized in that the traction rope guide assembly includes a first rotating support (110) and a second rotating support (120). The first rotating support (110) and the second rotating support (120) are sleeved on the positioning post (211) or positioning sleeve (212) of the housing (210). The first rotating support member (110) has a first limiting groove (111) formed in the circumferential direction. The first limiting groove (111) is used to support the first traction section (310) and also to limit the radial displacement of the first traction section (310). The second rotating support (120) has a second limiting groove (121) formed in the circumferential direction. The second limiting groove (121) is used to support the second traction section (320) and also to limit the radial displacement of the second traction section (320). According to claim 1, the traction rope guiding assembly is characterized in that the first rotating support (110) includes a first body (112) and a first limiting part (113). The first limiting part (113) is located at both ends of the first body (112). The diameter of the first limiting part (113) is larger than the diameter of the first body (112), and the first limiting groove (111) is formed between the first limiting part (113) and the first body (112). According to claim 2, the traction rope guiding assembly is characterized in that it further includes a first limiting post (130), the first limiting post (130) being located at the first rotating support member (110), and The distance between the first limiting post (130) and the first limiting part (113) is less than the diameter of the first traction section (310), and the distance between the first limiting post (130) and the bottom of the first limiting groove (111) is greater than the diameter of the first traction section (310). According to claim 1, the traction rope guiding assembly is characterized in that the second rotating support (120) includes a second body (122) and a second limiting part (123). The second limiting part (123) is located at both ends of the second body (122). The diameter of the second limiting part (123) is larger than the diameter of the second body (122), and a second limiting groove (121) is formed between the second limiting part (123) and the second body (122). According to claim 4, the traction rope guiding assembly is characterized in that it further includes a second limiting post (140), the second limiting post (140) being located at the second rotating support member (120), and The distance between the second limiting post (140) and the second limiting part (123) is less than the diameter of the second traction section (320), and the distance between the second limiting post (140) and the bottom of the second limiting groove (121) is greater than the diameter of the second traction section (320). According to any one of claims 1 to 5, the traction rope guiding assembly is characterized in that the first rotating support (110) is located at one end of the housing (210) away from the wheel (330), and the first rotating support (110) and the first lead-out portion (341) of the first traction section (310) are distributed along the axial direction of the housing (210). According to any one of claims 1 to 5, the traction rope guiding assembly is characterized in that the second rotating support (120) is located at one end of the housing (210) away from the wheel (330), and the second rotating support (120) and the second lead-out portion (342) of the second traction section (320) are distributed along the axial direction of the housing (210). According to claim 7, the traction rope guiding assembly is characterized in that the second rotating support (120) is also located on the side of the instrument plug (410) away from the insertion part (500), and Along the axial direction of the second rotating support (120), the height between the first side of the second limiting groove (121) and the housing (210) is less than the height between the housing (210) and the instrument tube (420), and the first side of the second limiting groove (121) is the side of the second limiting groove (121) away from the housing (210). An endoscope handle, characterized in that it comprises a housing (210) and a traction rope guide assembly, wherein the traction rope guide assembly is the traction rope guide assembly according to any one of claims 1 to 8. The housing (210) includes a first housing (210a) and a second housing (210b). The first housing (210a) is provided with one of a positioning post (211) and a positioning sleeve (212), and the second housing (210b) is provided with the other of a positioning post (211) and a positioning sleeve (212). The positioning post (211) is installed in the positioning sleeve (212). An endoscope, characterized in that it comprises a handle (200), an insertion part (500), and a display device, wherein the handle (200) is the endoscope handle as described in claim 9, the handle (200) is connected to the insertion part (500), and the handle (200) is also connected to the display device.