Tong channel pipe and endoscope

Abstract

The utility model relates to the technical field of endoscopes, in particular to a forceps channel pipe and an endoscope, the forceps channel pipe comprises a main body pipe and a supporting part, the main body pipe comprises a near end and a far end which are arranged in the length direction of the main body pipe, and the far end is connected with a head end base of the endoscope; the supporting part is arranged on the outer side wall of the main body pipe in a sleeving mode, and at least part of the structure is fixedly arranged on the outer side wall of the main body pipe. Due to the fact that the supporting part is arranged on the outer side wall of the main body pipe, and at least part of the supporting part and at least part of the structure of the main body pipe are arranged in the bending part, the supporting part can play a role in supporting the main body pipe when the bending part is bent, so that the bending resistance of the main body pipe is improved, collapse of the main body pipe during bending is avoided, and the roundness of the main body pipe is guaranteed; instruments can enter and exit smoothly or be poured smoothly.

Description

Technical Field

[0001] The present application relates to the technical field of endoscopes, and more specifically to a forceps channel tube and an endoscope. Background Art

[0002] An endoscope is a medical instrument that is inserted into the human body for diagnosis and treatment purposes. It is a common method for looking into the internal cavities of the human body. An endoscope is a detection instrument that integrates traditional optics, ergonomics, precision machinery, modern electronics, mathematics, and software. With the rapid development of science and medical technology in recent years, endoscopic minimally invasive or non-invasive medical examinations and treatments have become widely popular. A disposable soft endoscope can use its slender insertion part to enter the human body through natural channels or surgical incisions to conduct a full range of inspections or treatments of internal organs.

[0003] Among them, the clamp channel tube is a key component inside the endoscope. It is the channel for diagnostic and treatment accessories to enter the body from outside the body. Since the human body cavity is usually curved, the endoscope needs to passively conform to the human body cavity during use in order to be inserted into the target position; at the same time, after the end of the endoscope head reaches the target position, its head end also needs to be actively bent through the control handle according to the anatomical structure of the target position in order to better observe, diagnose and treat; these curved shapes have very high performance requirements for the clamp channel tube. When the clamp channel tube's anti-bending ability is insufficient, the clamp channel tube is prone to collapse during the bending process of the curved part, resulting in the inability to smoothly enter and exit the instrument or perform perfusion, affecting the inspection and treatment.

[0004] Therefore, improving the bending resistance of the clamp channel pipe is a technical problem to be solved urgently in this field. Utility Model Content

[0005] The present application provides a clamp channel tube and an endoscope, which can effectively improve the anti-bending ability of the clamp channel tube.

[0006] The present application provides a clamp channel tube, comprising:

[0007] A main body tube, the main body tube comprising a proximal end and a distal end arranged along the length direction thereof, the distal end being connected to the head end seat of the endoscope;

[0008] And a support portion, which is sleeved on the outer wall of the main tube, and at least a part of the structure forms an overlapping area with the main tube in the length direction, and there is no overlapping part in the orthographic projection of the main tube and the support portion along the length direction in the overlapping area.

[0009] In one embodiment, at least a portion of the structure of the support portion is disposed inside the bending portion of the endoscope, and the length of the support portion is not less than 1 / 3 of the bendable length of the bending portion.

[0010] In one embodiment, the end face of the support portion does not extend beyond the distal end face of the main body tube.

[0011] In one embodiment, at least a part of the structure of the support portion is fixedly connected to the outer side wall of the main body tube, and the way of the fixed connection includes adhesive fixation.

[0012] In one embodiment, the support portion includes a hollow elastic tube; the elastic tube is formed by winding flat wires or cutting a hollow pipe.

[0013] In one embodiment, a plane passing through the axis of the elastic tube intersects the tube wall of the elastic tube to form a plurality of cross-sections; the sizes of the plurality of cross-sections are the same, or the plurality of cross-sections have at least two different sizes; the distance between two adjacent cross-sections is the same or variable.

[0014] In one embodiment, the main body tube is a single-layer or multi-layer hollow tube.

[0015] In one embodiment, the material of the main body tube is TPU, PTFE, PI, PE or PEBAX.

[0016] In one embodiment, an installation groove is provided on the outer side wall of the main body tube, and the support portion is arranged in the installation groove.

[0017] The present application provides an endoscope, including a head end seat, a bending portion and the above-mentioned forceps channel tube, the head end seat is connected to the distal end of the forceps channel tube; the bending portion is arranged outside the main body tube, and the support portion is arranged between the main body tube and the bending portion.

[0018] According to the forceps channel tube in the above embodiment, including a main body tube and a support portion, the main body tube includes a proximal end and a distal end arranged along its length direction, the distal end is connected to the head end seat of the endoscope, and the support portion is sleeved on the outer side wall of the main body tube. Since the support portion is arranged on the outer side wall of the main body tube, during use, the support portion can play a supporting role for the main body tube to improve the anti-bending ability of the main body tube, avoid the collapse of the main body tube when it is bent, resulting in a decrease in its inner diameter, so as to ensure its roundness and enable the instrument to enter and exit smoothly or the perfusion to be smooth. Description of the Drawings

[0019] Figure 1 It is a schematic structural diagram of a forceps channel tube in one embodiment;

[0020] Figure 2 It is a structural sectional view of a forceps channel tube in one embodiment;

[0021] Figure 3 It is a schematic structural diagram of a forceps channel tube in another embodiment;

[0022] Figure 4It is a structural sectional view of the forceps channel tube in another embodiment;

[0023] Figure 5 It is a schematic structural diagram of the main body tube in another embodiment.

[0024] Wherein: 100, main body tube; 110, proximal end; 120, distal end; 130, mounting groove; 200, support portion. Detailed implementation manners

[0025] The present application will be further described in detail below in conjunction with the accompanying drawings through specific implementation manners. Similar elements in different implementation manners adopt related similar element numbers. In the following implementation manners, many detailed descriptions are for better understanding of the present application. However, those skilled in the art can easily recognize that some of the features can be omitted in different situations, or can be replaced by other elements, materials, or methods. In some cases, some operations related to the present application are not shown or described in the specification, which is to avoid the core part of the present application being overwhelmed by excessive descriptions. For those skilled in the art, it is not necessary to describe these related operations in detail, and they can fully understand the related operations according to the descriptions in the specification and the general technical knowledge in the art.

[0026] In addition, the features, operations, or characteristics described in the specification can be combined in any appropriate manner to form various implementation manners, and the operation steps involved in each embodiment can also be reordered or adjusted in an obvious manner by those skilled in the art. Therefore, the specification and the drawings are only for clearly describing a certain embodiment, and do not mean to be the necessary composition and / or sequence.

[0027] The serial numbers assigned to the components herein, such as "first", "second", etc., are only used to distinguish the described objects and do not have any sequential or technical meanings. The "connection" and "coupling" mentioned in the present application, unless otherwise specified, both include direct and indirect connection (coupling).

[0028] It should be noted that when an element is referred to as being "fixed to" another element, it can be directly on the other element or there can also be an intermediate element. When an element is considered to be "connected" to another element, it can be directly connected to the other element or there may be an intermediate element at the same time. The terms "vertical", "horizontal", "left", "right", and similar expressions used herein are only for illustrative purposes.

[0029] In the present utility model, the orientation or positional relationship indicated by terms such as "upper", "lower", "left", "right", "front", "rear", "top", "bottom", "inner", "outer", "middle", "vertical", "horizontal", "lateral", "longitudinal", etc. is based on the orientation or positional relationship shown in the drawings. These terms are mainly used to better describe the present utility model and its embodiments, and are not used to limit that the indicated device, element or component must have a specific orientation, or be constructed and operated in a specific orientation. Moreover, in addition to being able to represent the orientation or positional relationship, some of the above terms may also be used to represent other meanings. For example, the term "upper" may also be used to represent a certain attachment relationship or connection relationship in some cases. For those of ordinary skill in the art, the specific meanings of these terms in the present utility model can be understood according to specific circumstances.

[0030] In addition, the terms "mounted", "arranged", "provided with", "connected", "coupled" should be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or an integral structure; it may be a mechanical connection or an electrical connection; it may be directly connected, or indirectly connected through an intermediate medium, or there may be an internal communication between two devices, elements or components. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0031] In order to more clearly describe the structure of the present utility model, the terms "proximal end" and "distal end" are used as orientation terms. The "proximal end" refers to the end of the structure that is close to the operator during use, and the "distal end" refers to the end of the structure that is far from the operator during use, that is, the end that is close to the patient or extends into the patient's body.

[0032] The present application provides an endoscope, which is applied to peeping into the internal cavity of the human body. During use, some structures need to be inserted into the human body cavity. It includes a head end seat, a working channel interface, a bending part and a forceps channel tube. The forceps channel tube is arranged between the head end seat and the working channel interface. The bending part is sleeved outside the forceps channel tube and covers at least part of the structure of the forceps channel tube. When the bending part is bent, the part of the forceps channel tube arranged inside the bending part is bent accordingly.

[0033] Since the head end seat, the working channel interface and the bending part are prior arts and not the core protected by the present application, the structure of the forceps channel tube will be specifically introduced below.

[0034] Please refer to Figures 1 to 5, the forceps channel tube includes a main body tube 100 and a support portion 200. The main body tube 100 includes a proximal end 110 and a distal end 120 arranged along its length direction. The distal end 120 is connected to the head end seat of the endoscope (not shown in the figure); the support portion 200 is sleeved on the outer wall of the main body tube 100. At least part of the structure of the support portion 200 is correspondingly arranged inside the bending portion of the endoscope (not shown in the figure), and at least part of the structure forms an overlapping area with the main body tube 100 in the length direction. There is no overlapping part in the positive projection of the main body tube 100 and the support portion 200 in the overlapping area along the length direction, that is, the outer diameter of the main body tube 100 matches the inner diameter of the support portion 200, and they are connected in an interference fit or transition fit manner.

[0035] It should be further noted that the bending portion is arranged between the proximal end 110 and the distal end 120 of the forceps channel tube. At least part of the main body tube 100 and the support portion 200 are arranged inside the bending portion. The end face of the support portion 200 does not extend beyond the end face of the distal end 120 of the main body tube 100. Preferably, both ends of the support portion 200 do not exceed both ends of the main body tube 100. Considering the material cost of the support portion 200, in a preferred solution, the length of the support portion 200 matches the length of the bending portion and is entirely located inside the bending portion. To ensure a good support effect, the length of the support portion 200 is generally not less than 1 / 3 of the bendable length of the bending portion.

[0036] It should be noted that the bendable length refers to the length between the first deflection position and the last deflection position when the bending portion undergoes bending deformation.

[0037] Since the support portion 200 is arranged on the outer wall of the main body tube 100, during use, under the bending action of the bending portion of the endoscope, the main body tube 100 bends accordingly, and the support portion 200 can support the main body tube 100, improving the anti-bending ability of the main body tube 100, avoiding the collapse of the main body tube 100 when bending, resulting in a decrease in its inner diameter, and ensuring its roundness, so that the instrument can smoothly enter and exit or the perfusion can be smooth.

[0038] Since the support portion 200 is directly sleeved on the outside of the main body tube 100, the inner diameter of the support portion 200 matches the outer diameter size of the main body tube 100, so that the support portion 200 can be directly fixed on the main body tube 100 without the need to set up additional fixing structures, simplifying the structure and assembly process of the forceps channel tube.

[0039] In one embodiment, in order to further enhance the stability of the connection between the support portion 200 and the main body tube 100, the support portion 200 and the main body tube 100 are fixed by bonding. The bonding method can minimize the influence of the setting of the support portion 200 on the outer diameter and inner diameter of the main body tube 100. At the same time, by using the bonding method to achieve fixed connection, the materials are easy to obtain, the operation is convenient, it is easy to process and assemble, and the cost is controllable. The support portion 200 and the main body tube 100 can be fixed by an adhesive. The adhesive is evenly applied to the area where the support tube contacts the main body tube 100 so that the contact parts of the support portion 200 and the main body tube 100 are all fixed to the main body tube 100 by bonding, or by dotting, forming a plurality of bonding points at any position of the main body tube 100, and using the bonding points to fix some structures in the contact parts of the main body tube 100 and the support tube to the main body tube 100 by bonding.

[0040] In one embodiment, the support portion 200 includes a hollow elastic tube, which is formed by winding flat wires or cutting a hollow pipe. The flat wire is an elastic metal flat wire, and the cross-section of the flat wire is generally rectangular (including a rectangle with rounded corners), so that the contact area between the elastic tube and the main body tube 100 is larger, and after the flat wire is wound around the main body tube 100, the compressive strength of the tube wall of the main body tube 100 is a little higher, which is further beneficial to ensuring the effect that the main body tube 100 does not deform after bending.

[0041] In one embodiment, a plurality of cross-sections can be formed by the intersection of the plane passing through the axis of the elastic tube and the tube wall of the elastic tube. The sizes of the plurality of cross-sections are variable. For example, the plurality of cross-sections have at least two different sizes. The cross-section sizes of the elastic wires are different, that is, the thicknesses of the flat wires forming the elastic tube are different. The elastic wire with a larger cross-section size has poorer flexibility. Relatively, the elastic wire with a smaller cross-section size has better flexibility and is easy to bend, so that the anti-bending ability and flexibility of different positions of the elastic tube are different, and the bending angle and effect are better when the forceps channel tube is bent, so that it can better adapt to the shape of the cavity in its use environment.

[0042] In one embodiment, the size of the cross-section of the flat wire gradually decreases along the direction from the proximal end 110 to the distal end 120, that is, the support portion 200 near the distal end 120 has better flexibility and is easier to bend, and can better adapt to its use environment.

[0043] Of course, in other embodiments, the size of the cross-section of the flat wire can also remain unchanged.

[0044] In one embodiment, the main body tube 100 is made by extrusion or other forming processes and has a single-layer or multi-layer hollow tubular structure, and its cross-section is generally circular to adapt to the existing instrument shape. The shape of the support part 200 is adapted to the shape of the main body tube 100. The processing technology of the main body tube 100 is mature and simple, which can effectively reduce the production cost. When the main body tube 100 is a multi-layer structure, the materials of each layer structure can be different or exactly the same. For example, in this embodiment, the multi-layer structure can be integrally formed by using an extrusion process with one material. By setting the multi-layer structure, its strength can be improved to enhance the compressive capacity. It can also be set as different materials based on the need to further improve the performance of the main body tube 100 and the requirement to reduce the cost of the main body tube 100. For example, the main body tube 100 is a three-layer structure, and the outermost layer and the innermost layer are made of the same kind of polymer material, and the middle layer is made of other polymer materials or metal materials.

[0045] In one embodiment, the material of the main body tube 100 can be polymer materials such as TPU, PTFE, PI, PE or PEBAX.

[0046] Please refer to Figures 3 to 5 , in one embodiment, an installation groove 130 is provided on the outer side wall of the main body tube 100, and the support part 200 is arranged in the installation groove 130. Through the setting of the installation groove 130, the connection stability and reliability between the main body tube 100 and the support part 200 can be better improved. At the same time, the setting of the installation groove 130 does not affect the inner diameter of the main body tube 100, and at least part of the structure of the support part 200 can overlap with the main body tube 100 in the radial direction, so that the influence of the support part 200 on the outer diameter of the entire forceps channel tube can be further reduced. In this embodiment, the size of the installation groove 130 matches the size of the support part 200 to better fix the support part 200 in the installation groove 130, and also make the outer side wall of the support part 200 flush with the outer side wall of the main body tube 100. The setting of the support part 200 will not additionally increase the outer diameter size of the forceps channel tube, thus avoiding the influence of the setting of the support part 200 on the size of the forceps channel tube and better meeting the requirements for the use of the forceps channel tube in the endoscopic field.

[0047] The above uses specific examples to elaborate on this application, which is only used to help understand this application and is not used to limit this application. For those skilled in the technical field to which this application belongs, according to the idea of this application, several simple deductions, deformations or substitutions can also be made.

Claims

1. A forceps channel tube, characterized in that, Comprising: A main tube, the main tube including a proximal end and a distal end arranged along its length direction, the distal end being connected to the head end seat of the endoscope; And a support portion, the support portion being sleeved on the outer side wall of the main tube, and at least part of the structure overlapping with the main tube in the length direction, and there being no overlapping part in the orthographic projection of the main tube and the support portion in the overlapping area along the length direction.

2. The forceps channel tube according to claim 1, wherein, At least part of the structure of the support portion is arranged inside the bending portion of the endoscope, and the length of the support portion is not less than 1 / 3 of the bendable length of the bending portion.

3. The forceps channel tube according to claim 1, wherein The end face of the support portion does not extend beyond the distal end face of the main tube.

4. The forceps channel tube according to any one of claims 1-3, characterized in that, At least part of the structure of the support portion is fixedly connected to the outer side wall of the main tube, and the way of the fixed connection includes bonding and fixing.

5. The forceps channel tube according to claim 1, wherein, The support portion includes a hollow elastic tube; the elastic tube is formed by winding flat wires or cutting a hollow pipe.

6. The forceps channel tube according to claim 5, characterized in that, A plane passing through the axis of the elastic tube intersects the tube wall of the elastic tube to form a plurality of cross-sections; the sizes of the plurality of cross-sections are the same, or the plurality of cross-sections have at least two different sizes; the distance between adjacent two cross-sections is the same or variable.

7. The forceps channel tube according to claim 1, characterized in that, The main tube is a single-layer or multi-layer hollow tube.

8. The forceps channel tube according to claim 1 or 7, characterized in that, The material of the main tube is TPU, PTFE, PI, PE or PEBAX.

9. The forceps channel tube according to claim 1, characterized in that, An installation groove is provided on the outer side wall of the main tube, and the support portion is arranged in the installation groove.

10. An endoscope, characterized in that, Comprising a head end seat, a bending portion and a forceps channel tube as described in any one of claims 1-9, the head end seat being connected to the distal end of the forceps channel tube; the bending portion is arranged outside the main tube, and the support portion is arranged between the main tube and the bending portion.

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