An insertion portion and an endoscope

Abstract

The present invention relates to the technical field of endoscopes, and specifically discloses an insertion portion and an endoscope. The disclosed insertion portion includes a snake bone and a first support member. The first support member is disposed through the snake bone, and the distal end of the first support member is fixedly connected to the distal end of the snake bone. The first support member is located on the first side of the snake bone, and the first support member is configured to allow the snake bone to bend towards the second side while restricting the snake bone from bending towards the first side. The first side and the second side are two radially opposite sides of the snake bone. In the above solution, after the snake bone bends towards the second side, the first support member can prevent the snake bone from bending towards the first side. Even when the snake bone receives a certain abutting force on the dorsal side in its bending direction, the snake bone can be maintained in a relatively determined bending posture, which is beneficial for the operator to perform stable surgical operations through the snake bone with a stable bending posture, thereby improving the convenience and stability of surgical operations.

Description

Technical Field

[0001] The present invention relates to the technical field of endoscopes, and in particular to an insertion portion and an endoscope. Background Art

[0002] An endoscope is a medical device that inserts an insertion portion into the human body and uses a camera module at the distal end to observe internal tissues. This helps doctors determine the location of lesions and the structural characteristics of the tissues within the patient's body. An endoscope consists of an operating handle and an insertion portion. In actual operation, the lever on the operating handle rotates the traction wheel to adjust the position of the active bending section of the insertion portion, thereby adjusting the orientation of the distal module and enabling functions such as fixed-point observation.

[0003] In related art, see Figure 1 After the operator controls the active bending section to reach a certain bending posture, due to the extremely narrow cavity in the human body, the active bending section is easily in contact with the inner wall of the human cavity on the dorsal side of its bending direction. When the operator performs the surgical operation, the dorsal side of the active bending section is easily subjected to the abutting force F exerted by the inner wall of the cavity, causing the middle part of the active bending section to bend and collapse inward, thereby making the active bending section present an S-shaped bending state, which is not conducive to the operator's precise operation. For example, when performing tracheal intubation, it is difficult for the operator to use the active bending section in the bent state to effectively lift the epiglottis cartilage to expose the glottis, resulting in a problem of poor surgical convenience. Summary of the Invention

[0004] The present invention discloses an insertion portion and an endoscope to solve the above technical problems existing in the related art.

[0005] In order to solve the above problems, the present invention adopts the following technical solutions:

[0006] In a first aspect, the present application provides an insertion portion for use in an endoscope, wherein the disclosed insertion portion includes a serpentine bone and a first support member, wherein the first support member is inserted into the serpentine bone, and the distal end of the first support member is connected and fixed to the distal end of the serpentine bone, and the first support member is located on a first side of the serpentine bone, and the first support member is configured to allow the serpentine bone to bend toward a second side while restricting the serpentine bone from bending toward the first side, and the first side and the second side are two radially opposite sides of the serpentine bone.

[0007] Furthermore, the first support member is a strip-shaped component, and the first support member is provided with a first clamping groove distributed along its axial direction. The side wall of the snake bone is provided with a first clamping strip that is radially recessed inward. The first clamping groove and the first clamping strip are limitedly matched to limit the snake bone from bending toward the first side.

[0008] Further, the insertion portion further includes an unlocking component, which is connected to the first support member and is configured to release the restriction of the first support member on the snake bone.

[0009] Further, the unlocking component includes a traction member, which includes a traction section and an unlocking section. The unlocking section is located inside the snake bone and radially outside the first support member. The traction section is connected to the unlocking section and is configured to pull the unlocking section to deform radially, so that the first latch and the first card slot are separated from each other.

[0010] Further, the insertion portion further includes a second support member, which is located on the second side of the snake bone and is configured to allow the snake bone to bend towards the first side while restricting the snake bone from bending towards the second side.

[0011] Further, the second support member is a strip-shaped member, and a second card slot is arranged on the second support member along its axial direction. A second latch is arranged on the side wall of the snake bone and recesses radially inwards. The second card slot and the second latch are in limiting cooperation to restrict the snake bone from bending towards the second side. The unlocking component is also connected to the second support member and is further configured to release the restriction of the second support member on the snake bone.

[0012] Further, the first latch and the second latch are formed by radially stamping inwards from the side wall of the snake bone.

[0013] Further, a guiding groove is arranged inside the side wall of the snake bone along its circumferential direction. The guiding groove is formed by radially stamping inwards from the side wall of the snake bone. The unlocking section is arranged in the guiding groove so that the unlocking section extends in a ring shape.

[0014] Further, the unlocking component further includes a sleeve, which is fixedly connected inside the snake bone, and the traction section is arranged inside the sleeve.

[0015] In a second aspect, the present application further provides an endoscope, which includes an operating handle and the aforementioned insertion portion, and the proximal end of the insertion portion is connected to the operating handle.

[0016] The technical solution adopted by the present invention can achieve the following beneficial effects:

[0017] After the insertion part and the endoscope of the present application bend the snake bone towards the second side, due to the restrictive effect of the first support member on the snake bone, even when a certain abutting force is applied to the dorsal side of the snake bone in its bending direction, any part of the snake bone can be prevented from bending towards the first side. That is, by setting the first support member, the snake bone can be maintained in a relatively determined bending posture. The stability of this snake bone bending posture is beneficial for the operator to perform stable surgical operations. For example, during tracheal intubation, the operator can use the snake bone in the bent state to assist in lifting the epiglottis cartilage to expose the glottis, thereby improving the convenience and stability of the surgical operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on these drawings.

[0019] Figure 1 is a schematic diagram of the snake bone in the bent state in the related art;

[0020] Figure 2 is one of the structural schematic diagrams of the insertion part of the embodiment of the present application;

[0021] Figure 3 is Figure 2 a partial enlarged schematic diagram of part A in;

[0022] Figure 4 is another structural schematic diagram of the insertion part of the embodiment of the present application;

[0023] Figure 5 is Figure 4 a partial enlarged schematic diagram of part B in;

[0024] Figure 6 is the third structural schematic diagram of the insertion part of the embodiment of the present application.

[0025] In the figure:

[0026] 100, snake bone; 110, first latch strip; 120, second latch strip; 130, guide groove; 200, first support member; 210, first card slot; 300, unlocking component; 310, traction member; 311, traction section; 312, unlocking section; 320, sleeve; 400, second support member; 410, second card slot; F, abutting force. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0027] To make the objectives, technical solutions and advantages of the present invention more clear, the technical solutions of the present invention will be described in detail below. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all embodiments. Based on the embodiments of the present invention, all other implementation manners obtained by those of ordinary skill in the art without creative efforts shall fall within the scope protected by the present invention.

[0028] The terms "first", "second", etc. in the description and claims of this application are used to distinguish similar objects, rather than to describe a specific order or sequence. It should be understood that such data can be interchanged under appropriate circumstances so that the embodiments of this application can be implemented in an order other than those illustrated or described here, and the objects distinguished by "first", "second", etc. are usually of the same category, and the number of objects is not limited. For example, the first object can be one or multiple. In addition, "and / or" in the description and claims means at least one of the connected objects, and the character " / " generally indicates an "or" relationship between the associated objects before and after.

[0029] The following will Figures 2 to 6 be combined with the attached

[0030] Please refer to Figure 2 , an insertion part is disclosed in an embodiment of this application. The disclosed insertion part is applied to an endoscope to probe into a human body cavity for observing a diseased part, facilitating a doctor to accurately diagnose a patient's disease. Specifically, the disclosed insertion part includes a snake bone 100 and a first support member 200. Among them, the snake bone 100 is provided at the distal part of the insertion part to serve as the active bending section of the insertion part. An operator can control the bending action of the active bending section through the operation handle of the endoscope. In the embodiment of this application, the snake bone 100 can provide an installation basis for the first support member 200. The first support member 200 is disposed through the snake bone 100. Exemplarily, the snake bone 100 can be a riveted snake bone or an integrally cut snake bone. The first support member 200 can be a strip-shaped member. The first support member 200 is disposed on the first side of the snake bone 100 and extends along the axial direction of the snake bone 100. The first support member 200 is fixedly connected to the distal end of the snake bone 100. When the snake bone 100 makes a bending action towards the second side, the first support member 200 synchronously bends towards the second side. When the snake bone 100 bends towards the first side, the first support member 200 can be in abutment with the snake bone for limiting, thereby restricting the snake bone 100 from bending towards the first side. The first side and the second side are two radially opposite sides of the snake bone 100.

[0031] It can be understood that the first support member 200 in the embodiments of the present application should be a strip structure with a certain toughness. Exemplarily, the first support member 200 can be a strip structure made of stainless steel material. The distal end of the first support member 200 can be fixedly connected to the distal end of the snake bone 100 by welding. After the snake bone 100 is bent towards the second side, the highly tough first support member 200 can adapt to the bending deformation of the snake bone 100 and prevent the first support member 200 from breaking during the bending process of the snake bone 100.

[0032] Based on the above technical solutions, when the insertion part of the embodiments of the present application is specifically applied, due to the restrictive effect of the first support member 200 on the bending of the snake bone 100 towards the first side, even when the snake bone 100 is subjected to a certain abutting force on the dorsal side of its bending direction, any part of the snake bone 100 can be prevented from bending and collapsing towards the first side. That is to say, the first support member 200 can shape the snake bone 100 in a bent state and have a certain structural strength, and can ensure the certainty of the bending posture of the snake bone 100. The stability of the bending posture of the snake bone 100 is beneficial to the operator for stable surgical operations. Exemplarily, during tracheal intubation, the operator can use the insertion part of the embodiments of the present application to replace the stylet to lift the epiglottis cartilage to expose the glottis, solving the problem of poor operational convenience in the related art where the stylet needs to be inserted first and then the endoscope is inserted, thereby improving the operational convenience and stability of the surgical operation.

[0033] In the embodiment of the present application, the first support member 200 can be a strip-shaped elastic piece made of a metal material. A plurality of first card slots 210 are provided on the first support member 200, and the plurality of first card slots 210 are distributed along the axial direction of the first support member 200, that is, along the axial direction of the snake bone 100. A first card strip 110 that radially inwardly recesses is provided on the side wall of the snake bone 100. Specifically, when forming the first card strip 110, a circumferentially extending incision can be first made on the side wall of the snake bone 100, and then the side wall portion of the snake bone 100 distributed on the proximal side of the incision is stamped to form the first card strip 110. In this way, along the extension direction of the snake bone 100 from its proximal end to its distal end, an inwardly inclined guiding surface is formed on the inner side of the first card strip 110. When the snake bone 100 bends towards the second side, this guiding surface allows the portion of the first support member 200 that can bend followingly to slide relatively towards the distal end with respect to the snake bone 100. If the snake bone 100 has a tendency to bend towards the first side, the first card slot 210 on the first support member 200 will be stuck at the end of the first card strip 110 to play a role of stopping and limiting the first support member 200, thereby restricting the first support member 200 from bending towards the first side, and further restricting the snake bone 100 from bending towards the first side. That is to say, through the setting of the first card strip 110 and the first card slot 210, a matching structure similar to a ratchet mechanism is formed between the snake bone 100 and the first support member 200, only allowing the snake bone 100 to bend towards the second side. The limiting cooperation relationship between the first card strip 110 and the first card slot 210 can ensure that the snake bone 100 maintains a relatively definite bending posture after bending towards the second side, and avoids the snake bone 100 from collapsing due to the force on its back side.

[0034] In the embodiment of the present application, the operator can release the restriction of the first support member 200 on the snake bone 100 by unlocking, so that the snake bone 100 can bend towards both the second side and the first side. In an optional embodiment of the present application, an operation window that radially penetrates the side wall of the snake bone 100 can be provided on the side wall of the snake bone 100, and the operation window can be arranged adjacent to the first card strip 110. When performing a specific unlocking operation, the operator can press the portion of the first support member 200 adjacent to the first card strip 110 through the operation window, so that the first support member 200 undergoes obvious radially inward deformation at the portion adjacent to the first card strip 110, thereby separating the first card strip 110 from the first card slot 210, and thus releasing the restriction of the first support member 200 on the snake bone 100 from bending towards the first side.

[0035] The inventor found during the research process that although pressing the first support member 200 through the operation window can release the restriction of the first support member 200 on the snake bone 100 from bending towards the first side, the pressing operation of the operator can only be performed outside the body, and there is an inconvenient operation situation in specific operations due to the limitation of the unlocking environment.

[0036] Based on this situation, in some embodiments of the present application, the insertion portion may further include an unlocking component 300. The unlocking component 300 is connected to the first support member 200, and the unlocking component 300 is configured to release the restrictive effect of the first support member 200 on the snake bone 100, so that the operator can achieve the convenience of the unlocking operation by operating the unlocking component 300.

[0037] Specifically, please refer to Figure 3 、 Figure 4 、 Figure 5 and Figure 6 . In an embodiment of the present application, the unlocking component 300 may include a traction member 310. Exemplarily, the traction member 310 may be a traction rope or a traction wire. The traction member 310 includes a traction section 311 and an unlocking section 312 that are connected to each other. Among them, the unlocking section 312 is located inside the snake bone 100, and the unlocking section 312 is located radially outside the first support member 200. The unlocking section 312 is disposed adjacent to the first latch 110. The traction section 311 extends towards the proximal end of the endoscope. Exemplarily, the traction section 311 may extend towards the proximal end of the endoscope to the operation handle. The operator can pull the traction section 311 to cause the unlocking section 312 to undergo a radially contracting deformation. During the contraction of the unlocking section 312, the unlocking section 312 contacts the first support member 200 and pulls the portion of the first support member 200 adjacent to the first latch 110 towards the radially inner side, so that the first latch 110 is disengaged from the first card slot 210, thereby releasing the restrictive effect of the first support member 200 on the bending of the snake bone 100 towards the first side. Compared with the method of unlocking by pressing the first support member 200 through the operation window outside the body, unlocking the first support member 200 by pulling the traction member 310 can enable the operator to conveniently control the operation handle to achieve the unlocking whether the insertion portion is inside or outside the body, which is more in line with the complex use environment of the endoscope and has stronger practicability.

[0038] In some embodiments of the present application, please refer to Figure 4 、 Figure 5 and Figure 6, the insertion part of the embodiment of the present application may further include a second support member 400. The second support member 400 is located on the second side of the snake bone 100 and is configured to allow the snake bone 100 to bend towards the first side while restricting the snake bone 100 from bending towards the second side. Specifically, the second support member 400 has the same strip-shaped structure as the first support member 200. Second card slots 410 are provided on the second support member 400 and distributed along its axial direction. Second card strips 120 that radially inwardly recess are provided on the side wall of the snake bone 100. The second card strips 120 can be processed and formed in the same manner as the first card strips 110. The second card strips 120 can be arranged opposite to the first card strips 110. When the snake bone 100 bends towards the first side, the second support member 400 and the second card strips 120 are in sliding fit. When the snake bone 100 has a tendency to bend towards the second side, the second card slots 410 on the second support member 400 will be stuck at the ends of the second card strips 120 to play a role of stopping and limiting, thereby restricting the second support member 400 from bending towards the second side, and further restricting the snake bone 100 from bending towards the second side.

[0039] In the embodiment of the present application, the unlocking component 300 is also connected to the second support member 400. The unlocking component 300 can both release the restriction of the first support member 200 on the snake bone 100 from bending towards the first side and release the restriction of the second support member 400 on the snake bone 100 from bending towards the second side. Specifically, the aforementioned unlocking section 312 can extend along the circumferential direction of the snake bone 100 and penetrate through the radial outer sides of both the first support member 200 and the second support member 400 at the same time. When an operator pulls the traction section 311, it can simultaneously deform the first support member 200 and the second support member 400 to release the lock. At this time, the snake bone 100 can bend towards the first side and also towards the second side.

[0040] Based on the above technical solutions, the first support member 200 and the second support member 400 that are radially opposite are provided inside the snake bone 100. An operator can control the cooperation relationship between the first support member 200 and / or the second support member 400 and the snake bone 100, that is, limit and lock or release the limit and lock, so as to make the snake bone 100 bend towards the first side or the second side, and can ensure the bending posture of the snake bone 100 after bending, so that the distal end of the insertion part has a certain structural strength. Even when the snake bone 100 receives a certain abutting force on the back side in its bending direction, it will not collapse to form an uncontrollable S-shaped posture, that is, exclude the influence on the bending posture of the snake bone 100 caused by the possible excessive narrowness of the human internal cavity, which is convenient for the operator to perform stable surgical operations. The method of separately arranging the first support member 200 and the second support member 400 on both sides can make the insertion part of the endoscope more flexibly adapt to the complex environment inside the cavity compared with the method of arranging the first support member 200 on one side.

[0041] In a further technical solution, a guiding groove 130 distributed along the circumferential direction of the snake bone 100 is further provided on the inner side of the side wall of the snake bone 100. Exemplarily, the guiding groove 130 can be formed by stamping radially inwards from the side wall of the snake bone 100. The aforementioned unlocking section 312 can be inserted into the guiding groove 130. Based on the distribution of the plurality of guiding grooves 130 in the circumferential direction of the snake bone 100, the unlocking section 312 is arranged to extend substantially along the circumferential direction of the snake bone 100. By pulling the traction section 311, an operator can simultaneously unlock the first support member 200 and the second support member 400.

[0042] It can be understood that when forming the aforementioned guiding groove 130 by stamping, the plurality of guiding grooves 130 should be distributed on the same side of the first radial direction, and the first radial direction is the distribution direction of the first support member 200 and the second support member 400. The connection part of the traction section 311 and the unlocking section 312 should also be distributed on the same side as the guiding groove 130. In this way, when pulling the traction section 311, the part of the unlocking section 312 distributed on the other side of the first radial direction will undergo a radial contraction action, and further cause the first support member 200 and the second support member 400 to undergo radial deformation.

[0043] In a further technical solution, the unlocking component 300 may further include a sleeve 320. The sleeve 320 is fixedly connected inside the snake bone 100. The traction section 311 is inserted into the sleeve 320. The sleeve 320 can play a certain constraining role on the traction section 311 to prevent the traction section 311 from moving around inside the snake bone 100.

[0044] The embodiment of the present application also discloses an endoscope. The disclosed endoscope includes an operating handle and the aforementioned insertion part, and the proximal end of the insertion part is connected to the operating handle.

[0045] It should be noted that in this article, the terms "comprising", "including" or any other variant thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements not only includes those elements, but also includes other elements not expressly listed, or further includes elements inherent to such process, method, article or device. Without further limitation, an element defined by the statement "including one..." does not exclude the existence of additional identical elements in the process, method, article or device including that 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 a reverse order according to the functions involved. For example, the described methods may be performed in a different order than described, and various steps may also be added, omitted, or combined. Additionally, features described with reference to certain examples may be combined in other examples.

[0046] As described above, it is only the specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the technical field can easily think of changes or substitutions within the technical scope disclosed by the present invention, and all of them should be covered by the protection scope of the present invention.

Claims

1. An insertion portion, applied to an endoscope, characterized in that: It comprises a snake bone (100), a first support member (200) and an unlocking assembly (300); wherein: The first support member (200) is a strip-shaped structure. The first support member (200) is inserted into the snake bone (100), and the distal end of the first support member (200) is connected and fixed to the distal end of the snake bone (100). The first support member (200) is located on the first side of the snake bone (100). The first support member (200) is provided with a plurality of first clamping grooves (210) distributed along its axial direction. The side wall of the snake bone (100) is provided with a first clamping strip (110) that is radially concave inward. The first clamping groove (210) and the first clamping strip (110) are limitedly matched to limit the bending of the snake bone (100) toward the first side and allow the snake bone (100) to bend toward the second side. The first side and the second side are two radially opposite sides of the snake bone (100); The unlocking component (300) is connected to the first support member (200), and the unlocking component (300) is configured to release the restrictive effect of the first support member (200) on the snake bone (100).

2. The insertion portion according to claim 1, wherein The unlocking assembly (300) includes a traction member (310), and the traction member (310) includes a traction section (311) and an unlocking section (312), wherein the unlocking section (312) is located inside the snake bone (100), and the unlocking section (312) is located radially outside the first support member (200), the traction section (311) is connected to the unlocking section (312), and the traction section (311) is configured to pull the unlocking section (312) to cause radial deformation, so that the first clamping strip (110) and the first clamping slot (210) are separated.

3. The insertion portion according to claim 2, wherein: The invention also includes a second support member (400), wherein the second support member (400) is located on the second side of the snake bone (100), and the second support member (400) is configured to allow the snake bone (100) to bend toward the first side, while limiting the snake bone (100) from bending toward the second side.

4. The insertion portion according to claim 3, wherein: The second support member (400) is a strip-shaped member, and a second clamping groove (410) distributed along its axial direction is provided on the second support member (400). A second clamping strip (120) recessed radially inward is provided on the side wall of the snake bone (100). The second clamping groove (410) and the second clamping strip (120) are limitedly matched to limit the bending of the snake bone (100) toward the second side. The unlocking component (300) is also connected to the second support member (400), and the unlocking component (300) is also configured to release the limiting effect of the second support member (400) on the snake bone (100).

5. The insertion portion according to claim 4, characterized in that The first clamping strip (110) and the second clamping strip (120) are formed by radially inwardly punching the side wall of the snake bone (100).

6. The insertion portion according to claim 4, wherein: A guide groove (130) distributed along the circumference of the side wall of the snake bone (100) is further provided. The guide groove (130) is formed by radially inwardly punching the side wall of the snake bone (100). The unlocking section (312) is inserted into the guide groove (130), so that the unlocking section (312) is arranged to extend in a ring shape.

7. The insertion portion according to claim 6, wherein: The unlocking assembly (300) further comprises a sleeve (320), wherein the sleeve (320) is fixedly connected to the snake bone (100), and the traction section (311) is inserted into the sleeve (320).

8. An endoscope, characterized in that: It comprises an operating handle and the insertion portion according to any one of claims 1 to 7.

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