Driving assembly, handle, and endoscope

Abstract

The present application relates to the technical field of medical devices. Disclosed are a driving assembly, a handle, and an endoscope. The driving assembly is used for the endoscope and comprises a traction rope and a wheel disk. The traction rope is provided with a first fixing part, and the first fixing part is fixedly assembled on a peripheral side surface of the wheel disk; a portion where the traction rope is located between the first fixing part and the proximal end of the traction rope is an extension section; the extension section is provided with a second fixing part, and the second fixing part is fixedly assembled relative to the wheel disk. The driving assembly is mounted on the handle. The endoscope comprises the handle. By means of the above-described technical solution, the present application can solve the technical problem of unstable fixation of the traction rope in the driving assembly in the related art.

Description

A drive assembly, a handle, and an endoscope Technical Field

[0001] This application relates to the field of medical device technology, and in particular to a drive assembly, a handpiece, and an endoscope. Background Technology

[0002] An endoscope is a commonly used medical device that can directly enter the body's natural passages, providing doctors with ample diagnostic information for disease treatment. In existing endoscopes, the proximal end of the traction cable in the drive assembly is typically fixed to a reel via a locking tube-like structure. The traction cable is used to pull the endoscope's insertion section, causing it to bend. Over time, the traction cable may slip relative to the locking tube, reducing the bending accuracy of the insertion section. In more severe cases, the traction cable may detach from the locking tube, rendering the bending function of the insertion section ineffective.

[0003] Therefore, providing a drive assembly, handle, and endoscope that can stably fix the traction rope is a technical problem that urgently needs to be solved by those skilled in the art. Utility Model Content

[0004] This application discloses a drive assembly, a handle, and an endoscope to solve the technical problem of unstable traction rope fixation in drive assemblies in related technologies.

[0005] To solve the above problems, this application adopts the following technical solution:

[0006] In one aspect, a drive assembly for an endoscope is disclosed, including a traction rope and a wheel;

[0007] The traction rope has a first fixing part, which is fixedly mounted on the circumferential side of the wheel.

[0008] The portion of the traction rope between the first fixed part and the proximal end of the traction rope is an extension section; the extension section has a second fixed part, which is fixedly assembled relative to the wheel.

[0009] In some designs, the drive assembly also includes a locking element, which is mounted on the wheel.

[0010] The second fixed part is fixedly assembled relative to the wheel by a locking device.

[0011] In some designs, the locking element is bonded to the wheel.

[0012] In some designs, the second fixing point has a knotted structure, wherein:

[0013] The wheel has a first threading hole through which the traction rope passes, and the traction rope is engaged with the wheel at the first threading hole through a knot structure; or, the locking member has a second threading hole through which the traction rope passes, and the traction rope is engaged with the wheel at the second threading hole through a knot structure.

[0014] In some designs, the locking element has a second threaded hole through which the traction rope passes; the locking element can deform under external force, causing the second threaded hole to clamp the second fixed part.

[0015] Alternatively, the locking mechanism presses the second fixed part against the wheel.

[0016] In some designs, the wheel has a slot, a locking element engages with the slot, and the traction rope is pressed and fixed within the slot.

[0017] In some designs, the traction rope consists of two strands; the proximal ends of the two strands are fixed to the wheel by the same locking device.

[0018] The proximal ends of the two traction ropes do not extend beyond the locking member, and / or the locking member is equidistant from the two first fixing components.

[0019] In some designs, the traction rope consists of two strands; the proximal ends of the two strands are fixedly connected.

[0020] The extension between the two first fixed parts is tensioned and at least partially attached to the wheel.

[0021] Secondly, a handle is disclosed, which is equipped with the drive component described in the first aspect.

[0022] Thirdly, an endoscope is disclosed, including the handle described in the second aspect.

[0023] The technical solution adopted in this application can achieve the following beneficial effects:

[0024] The drive assembly of this application pulls on the traction rope during bending, causing it to experience tension. The tension at the distal end of the traction rope is transmitted to the proximal end and ultimately to the wheel. Since the first fixing part of the traction rope is fixedly mounted on the circumferential side of the wheel, and the second fixing part is fixedly mounted on the wheel, the tension on the traction rope is transmitted to the wheel through both parts. The second fixing part shares the force with the first fixing part, thus preventing the first fixing part from loosening and ensuring the connection stability of the traction rope. Attached Figure Description

[0025] To more clearly illustrate the technical solutions in the embodiments of this application 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 application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0026] Figure 1 is a schematic diagram of the structure of the driver component of this application;

[0027] Figure 2 is a schematic diagram of the structure of the driving component of this application;

[0028] Figure 3 is a schematic diagram of the structure of the driving component of this application;

[0029] Figure 4 is a schematic diagram of the structure of the driving component of this application;

[0030] Figure 5 is a schematic diagram of the structure of the driving component of this application;

[0031] Figure 6 is a schematic diagram of the structure of the driving component of this application;

[0032] Figure 7 is a schematic diagram of the structure of the driving component of this application;

[0033] Figure 8 is a schematic diagram of the structure of the driving component of this application;

[0034] Figure 9 is a schematic diagram of the structure of the driving component of this application;

[0035] Figure 10 is a schematic diagram of the structure of the driving component of this application;

[0036] Figure 11 is a schematic diagram of the structure of the driving component of this application;

[0037] Figure 12 is a schematic diagram of the connection relationship between the drive component and the handle in this application;

[0038] Figure 13 is an axial view of the handle of this application.

[0039] In the picture:

[0040] 100-Drive assembly, 110-Wheel, 120-Locking tube, 130-Traction rope, 131-Extension section, 132-First fixing part, 133-Second fixing part, 140-Locking element;

[0041] 200-handle. Detailed Implementation

[0042] To make the objectives, technical solutions, and advantages of this application clearer, the technical solutions of this application will be described in detail below. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of them. Based on the embodiments in this application, all other implementation methods obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0043] 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.

[0044] 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".

[0045] The inventors discovered during endoscopy operation that in existing endoscopes, the proximal end of the traction rope 130 of the drive assembly 100 is typically fixed to the wheel 110 via a structure similar to a locking tube 120. The traction rope 130 is used to pull the insertion part of the endoscope, causing it to bend. After prolonged use, the traction rope 130 may slip relative to the locking tube 120, reducing the bending accuracy of the insertion part. In more serious cases, the traction rope 130 may detach from the locking tube 120, causing the bending function of the insertion part to fail.

[0046] The following description, in conjunction with Figures 1 to 13, details a drive assembly 100, a handle 200, and an endoscope provided in this application through specific embodiments and application scenarios.

[0047] Some embodiments of this application disclose a drive assembly 100, as shown in Figures 1-11, including a traction rope 130, a wheel 110, and a locking member 140.

[0048] As shown in Figures 1-11, the traction rope 130 has a first fixing part 132, which is fixedly mounted on the circumferential side of the wheel 110.

[0049] The traction rope 130 is used to pull the insertion part of the endoscope, causing the insertion part to bend. Correspondingly, the traction rope 130 is also subjected to tension from the insertion part. The tension at the distal end of the traction rope 130 is transmitted to the proximal end of the traction rope 130, and finally transmitted to the wheel 110 through the first fixing part 132, thereby relieving the tension on the traction rope 130. The connection between the first fixing part 132 and the wheel 110 ensures the bending accuracy of the insertion part during the pulling process.

[0050] In some embodiments, the first fixing part 132 is fixedly assembled relative to the wheel 110 by welding, bonding or snapping.

[0051] In some embodiments, the wheel 110 is provided with a rope hole, and the first fixing part 132 has a rope knot structure. The rope knot structure is stopped and limited at the rope hole of the wheel 110 to achieve relative fixation between the first fixing part 132 and the wheel 110.

[0052] In some embodiments, as shown in Figures 1-9, the wheel 110 is provided with a locking tube 120, which has a rope hole. The first fixing part 132 is located in the rope hole of the locking tube 120. The locking tube 120 can deform under the action of external force, so that the rope hole of the locking tube 120 clamps the first fixing part 132, thereby achieving relative fixation between the first fixing part 132 and the wheel 110.

[0053] All three embodiments described above can achieve relative fixation between the first fixed part 132 and the wheel 110. Correspondingly, in addition to the three methods described above, the first fixed part 132 can also achieve relative fixation with the wheel 110 in other ways. It can be flexibly set according to actual usage requirements. This embodiment does not limit this.

[0054] In some embodiments, as shown in Figures 1, 3, 5, 7, and 10, when the drive assembly 100 is used to drive the insertion portion to bend in one direction, the traction rope 130 is a single strand. The first fixing portion 132 and the second fixing portion 133 of the single strand of traction rope 130 are fixed to the wheel 110.

[0055] In some embodiments, as shown in Figures 2, 4, 6, 8, 9, and 11, when the drive assembly 100 is used to drive the insertion portion to bend bidirectionally, the traction rope 130 consists of two strands. The first fixing portion 132 and the second fixing portion 133 of the two traction ropes 130 are respectively fixed to the wheel 110.

[0056] As shown in Figures 1-11, the portion of the traction rope 130 located between the first fixed portion 132 and the proximal end of the traction rope 130 is an extension section 131; the extension section 131 has a second fixed portion 133, which is fixedly assembled relative to the wheel 110.

[0057] The tension on the traction rope 130 is transmitted to the wheel 110 through the first fixed part 132 and the second fixed part 133. The second fixed part 133 will share the force at the first fixed part 132, thereby making the first fixed part 132 less prone to loosening and ensuring the connection stability of the traction rope 130.

[0058] In this preferred embodiment, the second fixing part 133 is fixedly mounted on the circumferential side of the wheel 110, which can reduce the degree of bending of the traction rope 130 at the first fixing part 132, reduce the wear of the traction rope 130, and increase the service life of the traction rope 130.

[0059] As shown in Figures 3-8, the locking member 140 is disposed on the wheel 110, and the second fixing part 133 is fixedly assembled to the wheel 110 by the locking member 140. The locking member 140 fixes the second fixing part 133 to the wheel 110, realizing the fixed assembly of the second fixing part 133 relative to the wheel 110. At the same time, the locking member 140 also ensures the connection strength of the second fixing part 133 fixed to the wheel 110, making it difficult for the second fixing part 133 to fall off relative to the wheel 110.

[0060] As a preferred embodiment, as shown in Figures 7 and 8, the locking element 140 can be one, two, three or more, and can be flexibly set according to the usage requirements. This embodiment does not limit this.

[0061] In this preferred embodiment, the locking member 140 is bonded to the peripheral side wall of the wheel 110 to achieve the connection between the locking member 140 and the wheel 110.

[0062] In some embodiments, as shown in Figures 3, 5, and 7, when the drive assembly 100 is used to drive the insertion portion to bend in one direction, the traction rope 130 is a single strand. The second fixing portion 133 of the single strand of traction rope 130 is fixed to the wheel 110 by the locking member 140.

[0063] In some embodiments, as shown in Figures 4, 6, and 8, when the drive assembly 100 is used to drive the insertion portion to bend bidirectionally, the traction rope 130 consists of two strands. The second fixing portions 133 of the two traction ropes 130 are respectively fixed to the wheel 110 by a plurality of locking members 140.

[0064] In some embodiments, as shown in Figures 5 and 8, when the drive assembly 100 is used to drive the insertion portion to bend bidirectionally, the traction rope 130 consists of two strands. The second fixing portions 133 of the two traction ropes 130 are respectively fixed to the wheel 110 by the same locking member 140.

[0065] As shown in Figure 8, in an embodiment where the drive assembly 100 is used to drive the bidirectional bending of the insertion part, the proximal ends of the two traction ropes 130 are fixedly mounted to the wheel 110 by the same locking member 140. By fixing the proximal ends of the traction ropes 130 to the wheel 110 by the same locking member 140, the space occupied by the locking member 140 can be reduced, simplifying the overall structure of the drive mechanism.

[0066] Furthermore, as shown in Figures 4 and 6, the proximal ends of the two traction ropes 130 do not extend beyond the locking member 140. In existing drive assemblies 100, to facilitate the assembly of the traction ropes 130, a certain amount of slack is usually left at the proximal end of the traction rope 130 after it is fixed. After the traction ropes 130 are assembled, the slack portion of the traction rope 130 is cut off to prevent the traction rope 130 from wobbling. In this embodiment, however, the locking member 140 fixes the proximal end of the traction rope 130, preventing the slack portion of the traction rope 130 from wobbling within the handle 200 and affecting the use of the handle 200. This ensures the stable fixation of the traction rope 130 without the need to cut off the wobbly portion of the traction rope 130.

[0067] Furthermore, as shown in Figures 4 and 6, the locking member 140 is equidistant from the two first fixing components. During the process of the traction rope 130 pulling the insertion part to bend to both sides, the equidistant distance of the locking member 140 from the two first fixing components ensures that the tension transmitted from the proximal ends of the two traction ropes 130 to the second locking member 140 is equal, thus guaranteeing the stability of the structure.

[0068] As shown in Figures 10 and 11, the second fixed part 133 has a knot structure, and the wheel 110 has a first threading hole for the traction rope 130 to pass through. The traction rope 130 is limited and matched with the wheel 110 at the first threading hole through the knot structure.

[0069] In some embodiments, as shown in FIG10, when the drive assembly 100 is used to drive the insertion part to bend in one direction, the traction rope 130 is a single strand. The second fixing portion 133 of the single strand of traction rope 130 has a knot structure, which is stopped and limited at the first threading hole.

[0070] In some embodiments, as shown in FIG11, when the drive assembly 100 is used to drive the insertion portion to bend bidirectionally, the traction rope 130 has two strands. The second fixing portion 133 of both strands of traction rope 130 has a knot structure, and the two knot structures are stopped and limited at the first threading hole.

[0071] As shown in Figures 3 and 4, the second fixing part 133 has a knot structure, and the locking part 140 has a second threading hole through which the traction rope 130 passes. The traction rope 130 is limited and engaged with the wheel 110 at the second threading hole through the knot structure.

[0072] In some embodiments, as shown in FIG3, when the drive assembly 100 is used to drive the insertion part to bend in one direction, the traction rope 130 is a single strand. The second fixing portion 133 of the single strand of traction rope 130 has a knot structure, which is stopped and limited at the second threading hole.

[0073] In some embodiments, as shown in FIG4, when the drive assembly 100 is used to drive the insertion part to bend bidirectionally, the traction rope 130 has two strands. The second fixing part 133 of both strands of traction rope 130 has a knot structure, and the two knot structures stop and limit at the two threading holes.

[0074] As shown in Figures 7 and 8, the locking member 140 has a second threading hole through which the traction rope 130 passes; the locking member 140 can deform under the action of external force, so that the second threading hole clamps the second fixing part 133.

[0075] In some embodiments, as shown in FIG7, when the drive assembly 100 is used to drive the insertion part to bend in one direction, the traction rope 130 is a single strand. When the second fixing part 133 of the single strand of traction rope 130 is located in the second threading hole, the locking member 140 deforms to clamp the second fixing part 133 in the second threading hole.

[0076] In some embodiments, as shown in FIG8, when the drive assembly 100 is used to drive the insertion part to bend bidirectionally, the traction rope 130 has two strands. When the second fixing portions 133 of both traction ropes 130 are located in the second threading hole, the locking member 140 deforms to clamp the two second fixing portions 133 in the second threading hole.

[0077] As shown in Figures 5 and 6, the locking member 140 presses the second fixed part 133 onto the wheel 110, thereby connecting the locking member 140 to the traction rope 130.

[0078] In some embodiments, as shown in FIG5, when the drive assembly 100 is used to drive the insertion part to bend in one direction, the traction rope 130 is a single strand. The second fixed portion 133 of the single strand of traction rope 130 is pressed onto the wheel 110 by the locking member 140, thereby realizing the connection between the locking member 140 and the traction rope 130.

[0079] In some embodiments, as shown in FIG6, when the drive assembly 100 is used to drive the insertion part to bend bidirectionally, the traction rope 130 consists of two strands. The second fixing portion 133 of the two strands of traction rope 130 is pressed onto the wheel 110 by the locking member 140, thereby connecting the locking member 140 to the traction rope 130.

[0080] The wheel 110 is provided with a slot (not shown in the figure), and the second fixing part 133 is stopped and limited in the slot.

[0081] In some embodiments, when the drive assembly 100 is used to drive the insertion part to bend in one direction, the traction rope 130 is a single strand. The second fixing part 133 of the single strand of traction rope 130 is engaged in the slot, and the locking member 140 is engaged in the slot, pressing the second fixing part 133 into the slot, further increasing the connection strength between the second fixing part 133 and the wheel 110.

[0082] In some embodiments, when the drive assembly 100 is used to drive the insertion part to bend in both directions, the traction rope 130 has two strands. The second fixing portions 133 of the two traction ropes 130 are respectively engaged in the slots, and the locking member 140 is engaged in the slots, pressing the two second fixing portions 133 into the slots, further increasing the connection strength between the second fixing portions 133 and the wheel 110.

[0083] As shown in Figures 1, 2, and 9, the second fixing part 133 is fixedly assembled to the wheel 110 by means of adhesive bonding, welding, or snap-fit. In this embodiment, the second fixing part is directly connected to the wheel 110, eliminating the need for the locking part 140. By sacrificing some connection strength, the drive assembly 100 occupies less space, simplifying the overall structure of the drive assembly 100.

[0084] In some embodiments, as shown in Figures 1 and 9, when the drive assembly 100 is used to drive the insertion part to bend in one direction, the traction rope 130 is a single strand. The second fixing part 133 of the single strand of traction rope 130 is fixedly assembled relative to the wheel 110 by means of adhesive bonding, welding or snap-fit.

[0085] In some embodiments, as shown in FIG2, when the drive assembly 100 is used to drive the insertion part to bend bidirectionally, the traction rope 130 consists of two strands. The second fixing portion 133 of the two strands of traction rope 130 is fixedly assembled relative to the wheel 110 by means of adhesive bonding, welding or snap-fit.

[0086] As shown in Figure 9, the proximal ends of the two traction ropes 130 are fixedly connected; the extension section 131 between the two first fixed parts 132 is tensioned and at least partially attached to the wheel 110. This arrangement allows the extension section 131 to be kept taut, preventing it from wobbling within the handle 200 and affecting its use.

[0087] Some embodiments of this application also disclose a handle 200, as shown in Figures 12 and 13, on which a drive assembly 100 is installed.

[0088] Some embodiments of this application also disclose an endoscope including a handle 200.

[0089] The endoscopes used in this application can be bronchoscopes, pyeloscopes, esophagoscopes, gastroscopes, colonoscopes, otoscopes, rhinoscopes, oral endoscopes, laryngoscopes, colposcopes, laparoscopes, arthroscopes, etc. This application does not impose specific limitations on the types of endoscopes.

[0090] It should be noted that, in this document, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Unless otherwise specified, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes that element.

[0091] Furthermore, it should be noted that the scope of the methods and apparatus in the embodiments of this application is not limited to performing functions in the order shown or discussed, but may also include performing functions substantially simultaneously or in the reverse order, depending on the functions involved. For example, the described methods may be performed in a different order than described, and various steps may be added, omitted, or combined. In addition, features described with reference to certain examples may be combined in other examples.

[0092] The above description is merely a specific embodiment of this application, but the scope of protection of this application is not limited thereto. Any changes or substitutions that can be easily conceived by those skilled in the art within the scope of the technology disclosed in this application should be included within the scope of protection of this application.

Claims

1. A drive assembly for an endoscope, characterized in that, Includes a traction rope and a reel; The traction rope has a first fixing part, which is fixedly mounted on the circumferential side of the wheel. The portion of the traction rope located between the first fixed part and the proximal end of the traction rope is an extension section; the extension section has a second fixed part, which is fixedly assembled relative to the wheel.

2. A driving component according to claim 1, characterized in that, The drive assembly also includes a locking element disposed on the wheel; The second fixing part is fixedly assembled relative to the wheel by the locking member.

3. A driving component according to claim 2, characterized in that, The locking element is bonded to the wheel.

4. A driving component according to claim 2, characterized in that, The second fixing part has a knot structure, wherein: The wheel has a first threading hole through which the traction rope passes, and the traction rope is engaged with the wheel at the first threading hole via the knot structure; or, the locking member has a second threading hole through which the traction rope passes, and the traction rope is engaged with the wheel at the second threading hole via the knot structure.

5. A driving component according to claim 2, characterized in that, The locking member has a second threading hole through which the traction rope passes; the locking member can deform under the action of external force, so that the second threading hole clamps the second fixing part; Alternatively, the locking member presses the second fixing part onto the wheel.

6. A driving component according to claim 5, characterized in that, The wheel is provided with a slot, and the locking member is engaged in the slot to press and fix the traction rope in the slot.

7. A drive assembly according to claim 2, wherein the traction rope is two strands; the proximal ends of the two strands of the traction rope are fixedly assembled to the wheel by the same locking member; The proximal ends of the two traction ropes do not extend beyond the locking member, and / or the locking member is equidistant from the two first fixing components.

8. The driving component according to claim 1, characterized in that, The traction rope consists of two strands; the proximal ends of the two strands of the traction rope are fixedly connected. The extension between the two first fixed parts is tensioned and at least partially attached to the wheel.

9. A handle, characterized in that, The device is equipped with the drive component as described in any one of claims 1-8.

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

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