Traction rope guide assembly, endoscope handle, and endoscope

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

Tow rope guide assembly, endoscope handle and endoscope TECHNICAL FIELD

[0001] The utility model relates to medical equipment technical field especially, relates to a tow rope guide assembly, endoscope handle and endoscope. BACKGROUND

[0002] The endoscope comprises an insertion part, a handle and a display device. The distal end of the insertion part is a active bending section. A tow rope is arranged in the handle. The distal end of the tow rope is connected with the active bending section. The proximal end of the tow rope is wound on a pulley. The tow rope is in a taut state. The pulley is rotated by being pushed. The tow rope moves in a synchronous and opposite direction. The active bending section of the insertion part is bent.

[0003] The handle is not only provided with the tow rope, but also provided with a cable harness, an instrument channel, a negative pressure suction channel, a positioning column, a fixing hole, a mounting seat and other structures. The structure in the handle is complex and the layout is compact. In addition, the handle shell structure is irregular. The distal end size is small. The tow rope is installed in the handle. The tow rope is easily interfered with the structure in the handle. On the other hand, when the tow rope moves in a synchronous and opposite direction, the taut section of the tow rope is easily rubbed with the shell or the internal structure of the shell. The service life of the tow rope is affected. The slack section of the tow rope is easily wound or clamped with the internal structure of the shell. The active bending section is switched from a bent state to a straight state.

[0004] Therefore, providing a guide assembly capable of guiding the tow rope has become a technical problem to be solved by those skilled in the art. CONTENT

[0005] The utility model discloses a tow rope guide assembly, endoscope handle and endoscope to solve the technical problem that the tow rope is easily interfered with the structure in the handle in the related art.

[0006] In order to solve the above problems, the utility model adopts the following technical scheme:

[0007] The utility model discloses a tow rope guide assembly, endoscope handle and endoscope to solve the technical problem that the tow rope is easily interfered with the structure in the handle in the related art.

[0008] The utility model discloses an endoscope handle, including casing and towrope guide component, the towrope guide component is any one technical scheme in the utility model discloses the towrope guide component, the casing includes first casing and second casing, one of the first casing is equipped with the positioning post and the positioning sleeve, the second casing is equipped with the other of the positioning post and the positioning sleeve, the positioning post is installed in the positioning sleeve.

[0009] The utility model discloses an endoscope, including handle, insertion part and display device, wherein, the handle is the endoscope handle of any one technical scheme in the utility model discloses, the handle is connected with the insertion part, and the handle is still connected with the display device.

[0010] The utility model discloses the technical scheme that adopts can reach the following beneficial effects:

[0011] The utility model discloses a towrope guide component, including first rotation support piece and second rotation support piece, and there is first limit recess on first rotation support piece, and first limit recess is used for supporting first tow segment, and there is second limit recess on second rotation support piece, and second limit recess is used for supporting second tow segment, through the support effect of first limit recess and second limit recess, not only can change the extension direction of first tow segment and second tow segment, makes the extension direction of towrope adapt to the internal structure of handle casing, avoids the interference of towrope and handle casing internal structure, and when towrope moves, still can limit the radial displacement of towrope, avoids the movement amplitude of towrope too big, leads to the friction of the tension section of towrope and casing or casing internal structure, and the problem of the winding or joint of the relaxation section of towrope and casing internal structure.

[0012] That is, the utility model discloses a towrope guide component, which guides and limits the towrope through the first rotation support piece and the second rotation support piece, solving the technical problem of interference between the towrope and the structure in the handle in the related art.

[0013] On the other hand, the utility model discloses a towrope guide component, the first rotation support piece and the second rotation support piece are sleeved on the positioning post or the positioning sleeve of the casing, the positioning post and the positioning sleeve are assembly fixing pieces of the casing, and the first rotation support piece and the second rotation support piece are arranged on the positioning post or the positioning sleeve, so that the first rotation support piece and the second rotation support piece do not need an additional mounting base, which is beneficial to simplify the internal structure of the handle and optimize the internal space layout of the handle. BRIEF DESCRIPTION OF DRAWINGS

[0014] In order to more clearly illustrate the technical solutions of the embodiments of the present application or the prior art, the following will briefly introduce the drawings needed to be used in the embodiments or the prior art description. Obviously, the drawings described below are only some of the embodiments of the present application, and not all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative labor are within the scope of the present application.

[0015] Fig. 1 is a schematic view of an endoscope according to an embodiment of the present application;

[0016] Fig. 2 is a partial schematic view of an endoscope according to an embodiment of the present application;

[0017] Fig. 3 is an enlarged view of portion A in Fig. 2;

[0018] Fig. 4 is a schematic view of a first housing without a traction rope guide assembly according to an embodiment of the present application;

[0019] Fig. 5 is a schematic view of a first housing with a traction rope guide assembly according to an embodiment of the present application;

[0020] Fig. 6 is an enlarged view of portion B in Fig. 5;

[0021] Fig. 7 is an enlarged view of portion C in Fig. 5;

[0022] Fig. 8 is a schematic view of a second housing according to an embodiment of the present application.

[0023] In the drawings: 110, first rotation support; 111, first limiting groove; 112, first body; 113, first limiting portion; 120, second rotation support; 121, second limiting groove; 122, second body; 123, second limiting portion; 130, first limiting column; 140, second limiting column; 200, handle; 210, housing; 210a, first housing; 210b, second housing; 211, positioning column; 212, positioning sleeve; 310, first traction section; 320, second traction section; 330, rotating wheel; 341, first lead-out portion; 342, second lead-out portion; 410, instrument peg; 420, instrument tube; 500, insertion portion. DETAILED DESCRIPTION

[0024] In order to make the purpose, technical solutions and advantages of the present application more clear, the technical solutions of the present application will be described in detail below. Obviously, the described embodiments are only some of the embodiments of the present application, not all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative labor are within the scope of the present application.

[0025] The terms "first", "second", etc. in the specification and claims of the present application are used to distinguish similar objects, and are not used to describe a specific order or sequence. It should be understood that the data used in this way can be interchanged under appropriate circumstances, so that the embodiments of the present application can be implemented in an order other than those illustrated or described herein, and the objects distinguished by "first", "second", etc. are generally a class, not limited to the number of objects, for example, the first object can be one or more. In addition, "and / or" in the specification and claims indicates at least one of the connected objects, and the character " / ", generally indicates that the front and rear associated objects are in a "or" relationship.

[0026] In the embodiments of the present application, "proximal end" and "distal end" refer to the relative position of each component to the user in the use environment, wherein the end closer to the user is designated as "proximal end", and the end farther away from the user is designated as "distal end".

[0027] The traction rope guide assembly, endoscope handle and endoscope provided by the embodiments of the present application will be described in detail below in combination with the specific embodiments and application scenarios of the present application with reference to FIGS. 1 to 8.

[0028] The traction rope guide assembly of the present embodiment is applied to an endoscope, and specifically applied to an endoscope handle 200 to guide the traction rope inside the handle 200.

[0029] Specifically, the handle 200 has a shell 210, which includes a first shell 210a and a second shell 210b. One of a positioning column 211 and a positioning sleeve 212 is arranged on the first shell 210a, and the other of the positioning column 211 and the positioning sleeve 212 is arranged on the second shell 210b. The positioning column 211 is installed in the positioning sleeve 212, so as to realize the assembly and fixation of the first shell 210a and the second shell 210b. FIGS. 2, 4, 5 and 8 show schematic views of the first shell 210a being provided with the positioning column 211 and the second shell 210b being provided with the positioning sleeve 212.

[0030] The traction rope guide assembly of the embodiment includes a first rotating support 110 and a second rotating support 120, as shown in FIG. 2, FIG. 3, FIG. 5 and FIG. 7. The first rotating support 110 and the second rotating support 120 are sleeved on the positioning column 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 with the positioning column 211 or the positioning sleeve 212, and when the traction rope moves, the traction rope generates friction with the first rotating support 110 or the second rotating support 120; or the first rotating support 110 and the second rotating support 120 are rotatably connected with the positioning column 211 or the positioning sleeve 212, which helps to reduce the friction generated between the traction rope and the first rotating support 110 or the second rotating support 120 when the traction rope moves.

[0031] The positioning column 211 and the positioning sleeve 212 are assembly fixing parts of the housing 210, and the first rotating support 110 and the second rotating support 120 are arranged on the positioning column 211 or the positioning sleeve 212, so that the first rotating support 110 and the second rotating support 120 do not need an additional mounting base, which is beneficial to simplify the internal structure of the handle 200 and optimize the internal space layout of the handle 200.

[0032] Preferably, the first rotating support 110 and the second rotating support 120 are sleeved on the positioning column 211, as shown in FIG. 2, FIG. 3, FIG. 5 and FIG. 7. Since the radial size of the positioning column 211 is smaller than that of the positioning sleeve 212, the first rotating support 110 and the second rotating support 120 are arranged as small as possible by being sleeved on the positioning column 211, so as to reduce the space occupied by the first rotating support 110 and the second rotating support 120 in the housing 210; meanwhile, after the positioning column 211 is mounted on the positioning sleeve 212, the positioning sleeve 212 can also function as an axial limiting part for the first rotating support 110 and the second rotating support 120, preventing the first rotating support 110 and the second rotating support 120 from slipping off the positioning column 211, and enhancing the reliability of the assembly of the first rotating support 110 and the second rotating support 120.

[0033] Preferably, the first rotating support 110 is formed with a first limiting groove 111 in the circumferential direction, and the first limiting groove 111 is used for supporting the first traction section 310 and limiting the radial displacement of the first traction section 310, as shown in FIG. 2 and FIG. 3. The second rotating support 120 is formed with a second limiting groove 121 in the circumferential direction, and the second limiting groove 121 is used for supporting the second traction section 320 and limiting the radial displacement of the second traction section 320. Here, the radial displacement can be the displacement in the radial direction relative to the first traction section 310 or the second traction section 320.

[0034] Not limited to this, the traction rope guide assembly of the embodiment can also include a third rotation support and a fourth rotation support, the structures of the third rotation support and the fourth rotation support are the same as those of the first rotation support 110 and the second rotation support 120. Specifically, in order to realize the multi-directional bending of the active bending section, the endoscope can also include two traction ropes, at this time, the handle 200 has four traction sections, and the third rotation support and the fourth rotation support are respectively used to support and guide the third traction section and the fourth traction section.

[0035] It can be known that the number of rotation supports of the traction rope guide assembly of the embodiment is the same as the number of traction sections in the handle 200.

[0036] The traction rope guide assembly of the embodiment can not only change the extension direction of the first traction section 310 and the second traction section 320 through the support of the first limiting groove 111 and the second limiting groove 121, so that the extension direction of the traction rope adapts to the internal structure of the shell 210, avoids the interference between the traction rope and the internal structure of the shell 210, but also can limit the radial displacement of the traction rope when the traction rope moves, so as to avoid the problem that the moving amplitude of the traction rope is too large, resulting in that the tension section of the traction rope rubs against the shell 210 or the internal structure of the shell 210, and the slack section of the traction rope is wound or connected with the internal structure of the shell 210.

[0037] That is, the traction rope guide assembly of the embodiment can guide and limit the traction rope through the first rotation support 110 and the second rotation support 120, thereby solving the technical problem in the related art that the traction rope is prone to interfere with the structure in the handle 200.

[0038] During the research and development, the inventors also considered directly opening a groove on the positioning column 211 for guiding the traction rope. However, the inventors found that since the radial dimension of the positioning column 211 is small, opening a groove on the positioning column 211 not only makes the depth of the groove small, which is not conducive to guiding and limiting the traction rope, but also affects the strength of the positioning column 211, thereby affecting the reliability of the assembly and fixation of the first shell 210a and the second shell 210b.

[0039] The traction rope guide assembly of the embodiment can not only ensure reliable guiding and limiting of the guide assembly to the traction rope, but also will not affect the strength of the positioning column 211, thereby ensuring the reliability of the assembly and fixation of the first shell 210a and the second shell 210b, by setting the first rotation support 110 and the second rotation support 120, and the first rotation support 110 and the second rotation support 120 are sleeved on the positioning column 211.

[0040] According to an optional embodiment, the first rotating support 110 comprises a first body 112 and first limiting portions 113 located at both ends of the first body 112, the diameter of the first limiting portions 113 is larger than that of the first body 112, and the first limiting portions 113 and the first body 112 form a first limiting groove 111 therebetween, as shown in FIGS. 5 and 7. Preferably, the first body 112 and the first limiting portions 113 are of an integrated structure, which can simplify the production and installation procedures 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 thereof, and the first traction segment 310 is located in the first limiting groove 111, which can guide and limit the first traction segment 310.

[0041] According to an optional embodiment, the traction rope guide assembly further comprises a first limiting column 130 located at the first rotating support 110, as shown in FIGS. 2, 3, 5 and 7. Preferably, the distance between the first limiting column 130 and the first limiting portions 113 is smaller than the diameter of the first traction segment 310, and the distance between the first limiting column 130 and the bottom of the first limiting groove 111 is larger than the diameter of the first traction segment 310. By providing the first limiting column 130, the first traction segment 310 can be prevented from slipping out of the first limiting groove 111.

[0042] According to an optional embodiment, the second rotating support 120 comprises a second body 122 and second limiting portions 123 located at both ends of the second body 122, the diameter of the second limiting portions 123 is larger than that of the second body 122, and the second limiting portions 123 and the second body 122 form a second limiting groove 121 therebetween, as shown in FIGS. 5 and 7. Preferably, the second body 122 and the second limiting portions 123 are of an integrated structure, which can simplify the production and installation procedures 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 thereof, and the second traction segment 320 is located in the second limiting groove 121, which can guide and limit the second traction segment 320.

[0043] According to an optional embodiment, the traction rope guide assembly further comprises a second limiting column 140 located at the second rotating support 120, as shown in FIGS. 2, 3, 5 and 7. Preferably, the distance between the second limiting column 140 and the second limiting portions 123 is smaller than the diameter of the second traction segment 320, and the distance between the second limiting column 140 and the bottom of the second limiting groove 121 is larger than the diameter of the second traction segment 320. By providing the second limiting column 140, the second traction segment 320 can be prevented from slipping out of the second limiting groove 121.

[0044] According to an optional embodiment, the first rotating support 110 is located at an end of the housing 210 away from the rotating wheel 330, and the first rotating support 110 is distributed along the axial direction of the housing 210 with the first leading part 341 of the first traction section 310, as shown in FIGS. 2 and 3. As shown in FIG. 6, the first leading part 341 is a first groove close to the rotating wheel 330, which is used to lead the first traction section 310 through the rotating wheel 330. That is, the first rotating support 110 is located at the bending area of the housing 210 at the far end. Through the support 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 suitable for the extension distribution characteristics of the housing 210, which is further beneficial to the internal structure layout of the housing 210, and avoids interference between the first traction section 310 and the remaining structures in the housing 210.

[0045] According to an optional embodiment, the second rotating support 120 is located at an end of the housing 210 away from the rotating wheel 330, and the second rotating support 120 is distributed along the axial direction of the housing 210 with the second leading part 342 of the second traction section 320, as shown in FIGS. 2 and 3. As shown in FIG. 6, the second leading part 342 is a second groove close to the rotating wheel 330, which is used to lead the second traction section 320 through the rotating wheel 330. That is, the second rotating support 120 is located at the bending area of the housing 210 at the far end. Through the support 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 suitable for the extension distribution characteristics of the housing 210, which is further beneficial to the internal structure layout of the housing 210, and avoids interference between the second traction section 320 and the remaining structures in the housing 210.

[0046] According to an optional embodiment, the second rotating support 120 is also located at a side of the instrument peg 410 away from the insertion part 500, as shown in FIGS. 2 and 3. As shown in FIGS. 2 and 3, the second rotating support 120 is located at a side of the instrument peg 410 close to the insertion part 500, which will make the bending angle of the second traction section 320 at the second rotating support 120 larger, resulting in greater loss of the second traction section 320 when being pulled.

[0047] 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, so that the second traction section 320 and the instrument tube 420 can be staggered 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.

[0048] The endoscope handle of the embodiment comprises a shell 210, the shell 210 comprises a first shell 210a and a second shell 210b, one of a positioning column 211 and a positioning sleeve 212 is arranged on the first shell 210a, the other of the positioning column 211 and the positioning sleeve 212 is arranged on the second shell 210b, the positioning column 211 is installed in the positioning sleeve 212, as shown in FIG. 1, FIG. 2, FIG. 4, FIG. 5 and FIG. 8.

[0049] The endoscope handle of the embodiment further comprises a traction rope guide assembly, the traction rope guide assembly is the traction rope guide assembly of any one of the technical solutions in the embodiment, and the traction rope guide assembly is sleeved on the positioning column 211 or the positioning sleeve 212, as shown in FIG. 2 and FIG. 5.

[0050] The remaining structures in the shell 210 can be the same as the prior art, and will not be described here. Only the main structures inside the shell 210 are shown in FIG. 2.

[0051] The endoscope handle of the embodiment has the traction rope guide assembly of any one of the technical solutions in the embodiment, and can avoid interference between the traction rope and the internal structure of the shell 210.

[0052] The endoscope of the embodiment comprises a handle 200, an insertion part 500 and a display device, wherein the handle 200 is the endoscope handle of any one of the technical solutions in the embodiment, the handle 200 is connected with the insertion part 500, and the handle 200 is further connected with the display device, as shown in FIG. 1 and FIG. 2.

[0053] The endoscope of the embodiment has the endoscope handle of any one of the technical solutions in the embodiment, and can avoid interference between the traction rope in the handle 200 and the internal structure of the shell 210.

[0054] The above is only a specific embodiment of the utility model, but the protection scope of the utility model is not limited to this, any skilled person in the art can easily think of changes or replacements within the technical range disclosed by the utility model, which should be covered in the protection scope of the utility model.

Claims

1. A traction rope guide assembly, used in an endoscope, characterized in that, The traction rope guide assembly comprises 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 a positioning column (211) or a positioning sleeve (212) of a housing (210), A first limiting groove (111) is formed in the circumferential direction of the first rotating support (110), the first limiting groove (111) is used for supporting a first traction section (310), and the first limiting groove (111) is also used for limiting the radial displacement of the first traction section (310), A second limiting groove (121) is formed in the circumferential direction of the second rotating support (120), the second limiting groove (121) is used for supporting a second traction section (320), and the second limiting groove (121) is also used for limiting the radial displacement of the second traction section (320).

2. A traction rope guide assembly according to claim 1, characterized in that The first rotating support (110) comprises 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), the diameter of the first limiting portion (113) is greater than that of the first body (112), and the first limiting groove (111) is formed between the first limiting portion (113) and the first body (112).

3. A traction rope guide assembly according to claim 2, characterized in that A first limiting column (130) is further included, the first limiting column (130) is located at the first rotating support (110), and The distance between the first limiting column (130) and the first limiting portion (113) is less than the diameter of the first traction section (310), and the distance between the first limiting column (130) and the bottom of the first limiting groove (111) is greater than the diameter of the first traction section (310).

4. The tow rope guide assembly of claim 1, wherein, The second rotating support (120) comprises 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), the diameter of the second limiting portion (123) is greater than that of the second body (122), and the second limiting groove (121) is formed between the second limiting portion (123) and the second body (122).

5. The tow rope guide assembly of claim 4, wherein, A second limiting column (140) is further included, the second limiting column (140) is located at the second rotating support (120), and The distance between the second limiting column (140) and the second limiting portion (123) is less than the diameter of the second traction section (320), and the distance between the second limiting column (140) and the bottom of the second limiting groove (121) is greater than the diameter of the second traction section (320).

6. The tow rope guide assembly of any one of claims 1 to 5, wherein, The first rotating support (110) is located at one end of the housing (210) away from a runner (330), and the first rotating support (110) and a first leading-out portion (341) of the first traction section (310) are distributed in the axial direction of the housing (210).

7. A traction rope guide assembly according to any one of claims 1 to 5, characterized in that The second rotation support (120) is located at one end of the housing (210) away from the rotating wheel (330), and the second rotation support (120) and the second leading-out portion (342) of the second traction section (320) are distributed along the axial direction of the housing (210).

8. The tow rope guide assembly of claim 7, wherein, The second rotation support (120) is also located on the side of the instrument bolt (410) away from the insertion portion (500), and In the axial direction of the second rotation 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).

9. An endoscope handle, characterized by The device comprises a housing (210) and a traction rope guide assembly, and the traction rope guide assembly is the traction rope guide assembly according to any one of claims 1 to 8, The housing (210) comprises a first housing (210a) and a second housing (210b), one of a positioning column (211) and a positioning sleeve (212) is arranged on the first housing (210a), the other of the positioning column (211) and the positioning sleeve (212) is arranged on the second housing (210b), and the positioning column (211) is installed in the positioning sleeve (212).

10. An endoscope characterized by comprising: The device comprises a handle (200), an insertion portion (500) and a display device, wherein the handle (200) is the endoscope handle according to claim 9, the handle (200) is connected with the insertion portion (500), and the handle (200) is also connected with the display device.

Images