An insertion tube and endoscope

Abstract

The utility model provides a kind of insertion tube and endoscope, it is related to medical instrument technical field, the insertion tube disclosed by the utility model includes several sections cutting tubes and outer skin, several sections cutting tubes are mutually worn, every section cutting tube can be pulled out or pushed into the inside of adjacent wearing cutting tube, the outer skin is covered on the outside of several sections cutting tube, and it can be telescopic with the pulling out or pushing in of cutting tube, by the telescopic insertion tube design, the length of insertion tube in unused state is effectively shortened, so that endoscope is convenient to carry.

Description

Technical Field

[0001] This utility model relates to the field of medical device technology, and in particular to an insertion tube and endoscope. Background Technology

[0002] With the rapid development of science and technology and medical technology, the use of endoscopes for minimally invasive or non-invasive medical examinations and / or treatments has become widespread. An endoscope generally includes an insertion tube assembly, a handpiece assembly, and connecting cables. In use, the insertion tube is first inserted into the organ to be examined through the body's natural orifice or surgical incision, and then changes in the relevant area are observed through the lens inside the insertion tube.

[0003] However, due to the different lengths of the natural cavities in the human body, the lengths of the endoscopic insertion tubes required vary. For example, the insertion tubes required for surgical cholangioscopes, uroscopes, and bronchoscopes can be up to 600mm long, making the endoscopes inconvenient to carry. Utility Model Content

[0004] This utility model discloses an insertion tube and endoscope, which solves the problem that the long length of the insertion tube makes the endoscope inconvenient to carry. Through the design of the telescopic insertion tube, the length of the insertion tube when not in use is effectively shortened while ensuring that the bending performance of the insertion tube remains unchanged, making the endoscope easy to carry.

[0005] To achieve the above objectives, the technical solution of this utility model is specifically implemented as follows:

[0006] This utility model discloses an insertion tube, comprising several cutting tube sections and an outer sheath. The cutting tube sections are interlocked with each other, and each cutting tube section can be pulled out or pushed into the interior of the adjacent interlocking cutting tube. The outer sheath covers the outside of the cutting tube sections and can extend and retract as the cutting tubes are pulled out or pushed in.

[0007] Furthermore, each section of the cutting tube has several slits on its outer circumferential surface.

[0008] Furthermore, the inner diameters at both ends of each section of the cutting tube are different, and the inner diameter at the distal end of the cutting tube is smaller than that at the proximal end.

[0009] Furthermore, the inner diameter of each section of the cutting tube gradually increases from the distal end to the proximal end.

[0010] Furthermore, the inner diameter of the proximal end of each section of the cutting tube is larger than the inner diameter of the distal end of the adjacent through-hole cutting tube.

[0011] Furthermore, the outer skin is an elastomer.

[0012] Another aspect of this utility model discloses an endoscope, including the aforementioned freely retractable insertion tube.

[0013] Beneficial technical effects:

[0014] This utility model discloses an insertion tube, comprising several cutting tube sections and an outer sheath. The cutting tube sections are interlocked, and each cutting tube section can be pulled out or pushed into the interior of the adjacent interlocking cutting tube. The outer sheath covers the outside of the cutting tube sections and can extend and retract as the cutting tubes are pulled out or pushed in. Through the retractable insertion tube design, the length of the insertion tube in the non-use state is effectively shortened, making the endoscope easy to carry. Attached Figure Description

[0015] To more clearly illustrate the technical solution of this utility model, the accompanying drawings used in the description of the embodiments will be briefly introduced below.

[0016] Figure 1 A schematic diagram of the cutting tube structure for an insertion tube as described in this utility model;

[0017] Figure 2 This is a schematic diagram illustrating the structure of an insert tube consisting of two cut tubes when it is extended, as an example.

[0018] Figure 3 This is a schematic diagram illustrating the structure of an insertion tube composed of two cutting tubes when shortened, as an example.

[0019] Figure 4 for Figure 3 A magnified view of part C.

[0020] Wherein, 1-cutting pipe, 11-cut slit. Detailed Implementation

[0021] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.

[0022] In the description of this invention, it should be understood that the orientation or positional relationship indicated by directional terms such as "front, back, up, down, left, right", "horizontal, vertical, horizontal" and "top, bottom" is generally based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing this invention and simplifying the description. Unless otherwise stated, these directional terms do not indicate or imply that the device or element referred to must have a specific orientation or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on the scope of protection of this invention; the directional terms "inner" and "outer" refer to the inner and outer contours relative to the outline of each component itself.

[0023] Furthermore, it should be noted that the use of terms such as "first" and "second" to define components is merely for the purpose of distinguishing the corresponding components. Unless otherwise stated, the above terms have no special meaning and therefore should not be construed as limiting the scope of protection of this invention.

[0024] The embodiments of this utility model will now be described in detail with reference to the accompanying drawings.

[0025] It should be noted that, in this embodiment, those skilled in the art will understand that when performing surgery using an endoscope, the front end of the insertion tube contacts the patient, and the rear end (handle assembly part) is for the operator to operate. For ease of description, the end of each component of the endoscope that is closer to the front end of the insertion tube is referred to as the distal end, and the end of each component that is closer to the rear end of the insertion tube is referred to as the proximal end.

[0026] To address the problem of inconvenient portability caused by the excessive length of insertion tubes in some endoscopes, this invention discloses a freely retractable insertion tube, see [link to relevant documentation]. Figures 1-3 Specifically, the insertion tube includes several sections of cut tube 1 and an outer sheath. The sections of cut tube 1 are interlocked. Each section of cut tube 1 can be pulled out or pushed into the interior of the adjacent interlocking cut tube 1. Preferably, each section of cut tube 1 has several slits 11 on its outer circumferential surface to achieve multi-angle bending of the insertion tube 1. See [link to documentation]. Figure 2 Furthermore, the inner diameters of the two ends (proximal and distal ends) of each section of the cutting tube 1 are different. The inner diameter of each section of the cutting tube 1 gradually increases from the distal end to the proximal end. The inner diameter of the distal end of each section of the cutting tube 1 is smaller than that of the proximal end. Moreover, the inner diameter of the proximal end of each section of the cutting tube 1 is larger than the inner diameter of the distal end of the adjacent through-hole cutting tube 1. This allows the proximal end of each section of the cutting tube 1 to be tightly clamped with the distal end of the adjacent through-hole cutting tube 1 through friction when the cutting tube is pulled out. The outer skin is an elastic body that covers the outside of several sections of the cutting tube 1 and can expand and contract as the cutting tube 1 is pulled out or pushed in. The specific material of the outer skin is not limited, as long as it can expand and contract as the cutting tube is pulled out or pushed in.

[0027] To illustrate the design principle of this utility model, examples are provided below. (See attached image.) Figure 2 and Figure 3, Assume that the insertion tube is only formed by sleeving an A cutting tube and a B cutting tube. A number of cutting slots 11 are provided on the outer peripheral surface of the A cutting tube, and a number of cutting slots are provided on the outer peripheral surface of the B cutting tube. The A cutting tube is sleeved inside the B cutting tube. The A cutting tube can be pulled out from inside the B cutting tube to make the length of the insertion tube longer; the A cutting tube can also be pushed into the B cutting tube to make the length of the insertion tube shorter. Moreover, the inner diameter r2 of the proximal end and the inner diameter r1 of the distal end of the A cutting tube satisfy r1 < r2, the inner diameter r4 of the proximal end and the inner diameter r3 of the distal end of the B cutting tube satisfy r3 < r4, and the inner diameter r2 of the proximal end of the A cutting tube and the inner diameter r3 of the distal end of the B cutting tube satisfy r2 > r3, so that the proximal end of the A cutting tube is frictionally clamped with the distal end of the B cutting tube.

[0028] It should be noted that the B cutting tube is the cutting tube adjacent to the A cutting tube when the A cutting tube is sleeved inside the B cutting tube. In other words, the adjacent cutting tube of any cutting tube described in the present invention refers to the cutting tube directly connected to the proximal end of any cutting tube when all the cutting tubes forming the insertion tube are in the pulled-out state.

[0029] The insertion tube disclosed in the present application includes several sections of cutting tubes. The several sections of the cutting tubes are sleeved with each other. Each section of the cutting tube can be pulled out or pushed into the interior of the cutting tube adjacent to it in a sleeved manner. When the insertion tube works, the cutting tube 1 can be pulled out from the interior of the cutting tube adjacent to it in a sleeved manner, making the length of the insertion tube longer, see Figure 2 ; when the insertion tube does not enter the working state, the cutting tube 1 can be pushed into the interior of the cutting tube adjacent to it in a sleeved manner, making the length of the insertion tube shorter, see Figure 3 and Figure 4 . Through the design of the telescopic insertion tube, the length of the insertion tube in the unused state is effectively shortened, making the endoscope easy to carry.

[0030] On the other hand, the present invention discloses an endoscope, which includes the telescopic insertion tube as described above.

[0031] In the description of this specification, the description referring to terms such as "one embodiment", "some embodiments", "example", "specific example", or "some examples" means that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic expressions of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described can be combined in a suitable manner in any one or more embodiments or examples.

[0032] The above embodiments are merely descriptions of preferred embodiments of the present utility model and are not intended to limit the scope of the present utility model. Various modifications and improvements made to the technical solutions of the present utility model by those skilled in the art without departing from the spirit of the present utility model should fall within the protection scope defined by the claims of the present utility model.

Claims

1. An insertion tube, characterized in that, It includes several cutting tubes (1) and an outer skin. The several cutting tubes (1) are interlocked with each other. Each cutting tube (1) can be pulled out or pushed into the interior of the adjacent interlocking cutting tube (1). The outer skin covers the outside of the several cutting tubes (1) and can extend and retract as the cutting tubes (1) are pulled out or pushed in.

2. An insertion tube according to claim 1, characterized in that, Each section of the cutting tube (1) has several slits (11) on its outer circumferential surface.

3. An insertion tube according to claim 2, characterized in that, The inner diameters at both ends of each section of the cutting tube (1) are different, and the inner diameter at the distal end of the cutting tube (1) is smaller than that at the proximal end.

4. An insertion tube according to claim 3, characterized in that, The inner diameter of each section of the cutting tube (1) gradually increases from the distal end to the proximal end.

5. An insertion tube according to claim 4, characterized in that, The inner diameter of the proximal end of each section of the cutting tube (1) is greater than the inner diameter of the distal end of the adjacent through-hole cutting tube (1).

6. An insertion tube according to claim 1, characterized in that, The outer skin is an elastomer.

7. An endoscope, characterized in that, Including the insertion tube as described in any one of claims 1-6.

Images