Protective sheath tube for built-in use of instrument channel of bronchoscope

Abstract

The utility model discloses a protective sheathing canal internally arranged in an instrument channel of a bronchoscope. The protective sheathing canal comprises a sheathing canal main body and an opening and closing section arranged at the front end of the sheathing canal main body, the sheath tube body is of a hollow tube structure, the opening and closing section is of a hollow circular-truncated-cone-shaped structure defined by a plurality of opening and closing parts, the front ends of the opening and closing parts are separated from one another, the rear ends of the opening and closing parts are connected with the sheath tube body, and the outer diameter of the front end of the opening and closing section is larger than that of the rear end of the opening and closing section. When used, the device can be placed in an instrument channel of a bronchoscope, biopsy forceps, an electrotome, a laser optical fiber and other instruments can be inserted through the inner channel of the sheath tube, and damage to an inner protection layer of the instrument channel is avoided; the opening and closing section is arranged at the front end of the sheathing canal body, when the sheathing canal is located in the instrument channel, the sheathing canal is in a closed state due to the restraining effect of the instrument channel, and instruments can be prevented from extending out of the sheathing canal; when the sheathing canal extends out of the instrument channel, the opening and closing part loses constraint and is unfolded, and the instrument can conveniently extend out of the sheathing canal to operate special parts.

Description

Technical Field

[0001] The utility model relates to the technical field of medical instruments, in particular to a protective sheath tube used internally in an instrument channel of a bronchoscope. Background Art

[0002] In order to be able to inspect and operate (such as clamping, electrosurgical cutting, laser cutting, and hemostasis) in the most distal bronchus, the bronchoscopes currently used in clinical medicine are designed with a very large bending angle (180° upward and 130° downward) to operate the tip of the bronchoscope into some bronchi with very special angles and diameters. However, when lesions in some special parts are found through the bronchoscope and instruments are required for operation (such as clamping, electrosurgical cutting, laser cutting, and hemostasis), the instrument may damage the internal protective layer of the instrument channel during the process of entering the lesion through the instrument channel, damaging the airtightness, waterproofness, and disinfection and sterilization functions of the bronchoscope, resulting in high repair costs, and may even cause the bronchoscope to be scrapped. Utility Model Content

[0003] In view of the defects in the prior art, the purpose of the utility model is to provide a protective sheath for internal use in an instrument channel of a bronchoscope, so as to protect the instrument channel of the bronchoscope.

[0004] The technical solution adopted by the utility model is:

[0005] The protective sheath used in the instrument channel of the bronchoscope comprises a sheath body and an opening and closing section arranged at the front end of the sheath body; the sheath body is a hollow tube structure, the outer diameter of which is matched with the inner diameter of the instrument channel, and the inner diameter of which is matched with the outer diameter of the instrument; the opening and closing section is a hollow truncated cone structure surrounded by a plurality of opening and closing parts, the front ends of the opening and closing parts are separated from each other, and the rear ends are connected to the sheath body, and the outer diameter of the front end of the opening and closing section is larger than the outer diameter of the rear end thereof.

[0006] Furthermore, the outer diameter of the sheath tube body is 20 mm, the thickness is 1 mm, and the inner diameter is 19 mm.

[0007] Furthermore, the outer diameter of the opening and closing section gradually decreases from the rear end to the front end, with the outer diameter of the rear end being 20 mm and the outer diameter of the front end being 10 mm.

[0008] Furthermore, the length of the opening and closing section is 25 mm.

[0009] Furthermore, the sheath tube body and the opening and closing section are made of polyvinyl chloride material.

[0010] Furthermore, the sheath tube body and the opening and closing section are transparent structures.

[0011] Furthermore, a plurality of slits are provided at intervals along the circumference of the opening and closing section, each of the slits is provided along the length direction of the opening and closing section, and the slits divide the opening and closing section into a plurality of opening and closing parts.

[0012] Furthermore, there are three opening and closing parts.

[0013] Additional aspects and advantages of the present application will be given in part in the description below, and in part will become apparent from the description below, or will be learned through the practice of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] In order to more clearly illustrate the specific implementation of the utility model or the technical solution in the prior art, the following is a brief introduction to the drawings required for the specific implementation or the prior art description. In all the drawings, similar elements or parts are generally identified by similar reference numerals. In the drawings, each element or part is not necessarily drawn according to the actual scale.

[0015] Figure 1 A schematic diagram of the structure of a protective sheath tube used internally in the instrument channel of a bronchoscope provided in an embodiment of the present application;

[0016] Figure 2 A diagram showing the use status of a protective sheath tube used internally in the instrument channel of a bronchoscope provided in an embodiment of the present application;

[0017] Figure 3 A diagram showing another usage state of the protective sheath tube used internally in the instrument channel of the bronchoscope provided in an embodiment of the present application.

[0018] Among them, there are a sheath tube 1, a sheath tube body 11, an opening and closing section 12, an opening and closing portion 121, a bronchoscope 2, an instrument channel 21, and an instrument 3. DETAILED DESCRIPTION

[0019] Here, it should be noted that the functions and methods involved in the present invention are merely conventional adaptive applications of the prior art. Therefore, the improvement of the present invention on the prior art is essentially the connection relationship between the hardware, rather than the functions and methods themselves. That is, although the present invention involves some functions and methods, it does not include improvements to the functions and methods themselves. The description of the functions and methods in the present invention is to better illustrate the present invention so as to better understand the present invention.

[0020] The following embodiments of the technical solution of the utility model are described in detail in conjunction with the accompanying drawings. The following embodiments are only used to more clearly illustrate the technical solution of the utility model, and are therefore only used as examples, and cannot be used to limit the protection scope of the utility model.

[0021] It should be noted that, unless otherwise specified, the technical terms or scientific terms used in this application should have the common meanings understood by technicians in the field to which the utility model belongs.

[0022] See also Figure 1 to Figure 3 The present application discloses a protective sheath 1 for use in an instrument channel of a bronchoscope, comprising a sheath body 11 and an opening and closing section 12 arranged at the front end of the sheath body 11; the sheath body 11 is a hollow tube structure, and its outer diameter is adapted to the inner diameter of the instrument channel 21, and its inner diameter is adapted to the outer diameter of the instrument 3; the opening and closing section 12 is a hollow truncated cone structure surrounded by a plurality of opening and closing portions 121, the front ends of the opening and closing portions 121 are separated from each other, and the rear ends are connected to the sheath body 11, and the outer diameter of the front end of the opening and closing section 12 is greater than the outer diameter of the rear end thereof.

[0023] When used, the present application can be placed in the instrument channel 21 of the bronchoscope 2, and instruments 3 such as biopsy forceps, electric knife, laser fiber, etc. can be inserted through the channel in the sheath 1 to avoid damaging the internal protective layer of the instrument channel 21; an opening and closing section 12 is provided at the front end of the sheath body 11, and the opening and closing section 12 is a hollow frustum-shaped structure surrounded by a plurality of opening and closing parts 121, and the outer diameter of the front end is greater than the outer diameter of the rear end; when the sheath 1 is located in the instrument channel 21, it is in a closed state due to the restraining effect of the instrument channel 21, which can prevent the instrument 3 from extending out of the sheath 1; when the sheath 1 extends out of the instrument channel 21, the opening and closing part 121 loses its restraint and unfolds, and the instrument 3 can be easily extended out of the sheath 1 to operate on special parts.

[0024] The sheath body 11 and the opening and closing section 12 are both transparent tubular structures made of polyvinyl chloride material. The sheath body 11 has an outer diameter of 20 mm, a thickness of 1 mm, and an inner diameter of 19 mm. Its outer diameter is smaller than the inner diameter of the instrument channel 21 (the inner diameter of the instrument channel 21 is generally 28 mm) and larger than the outer diameter of the instrument 3 (the outer diameter of the instrument 3 is generally 18 mm); the instrument 3 includes biopsy forceps, an electric knife, a laser optical fiber, etc.

[0025] The length of the opening and closing section 12 is 25 mm, and the outer diameter of the opening and closing section 12 gradually decreases from the rear end to the front end, with the outer diameter of the rear end being 20 mm and the outer diameter of the front end being 10 mm.

[0026] A plurality of slits are arranged at intervals along the circumference of the opening and closing section 12 . Each slit is arranged along the length direction of the opening and closing section 12 . The slits divide the opening and closing section 12 into a plurality of opening and closing portions 121 .

[0027] In this embodiment, three slits are provided at intervals along the circumference of the opening and closing section 12 , each slit is provided along the length direction of the opening and closing section 12 , and the slits divide the opening and closing section 12 into three opening and closing portions 121 .

[0028] With the above structure, when the opening and closing section 12 is located in the instrument channel 21, due to the restraining effect of the instrument channel 21, the opening and closing section 12 with a length of 25 mm will be maintained in a truncated cone shape with a minimum outer diameter of 10 mm, preventing the instrument 3 (biopsy forceps, electric knife, laser fiber, etc.) with a diameter of about 18 mm from extending out of the sheath 1 and damaging the inner layer of the instrument channel 21; when the opening and closing section 12 extends out of the instrument channel 21, because the restraining effect of the instrument channel 21 is lost, the opening and closing section 12 will open like an open flower bud, and the instrument 3 (biopsy forceps, electric knife, laser fiber, etc.) with a diameter of about 18 mm can be smoothly extended out of the sheath 1 for operation.

[0029] After the front end of the bronchoscope 2 is operated to enter some bronchi with very special angles and diameters, the front end is a hollow frustum-shaped transparent opening and closing section 12 with a progressively smaller diameter, which can be safely and smoothly introduced into these special parts. After the bronchoscope 2 is gradually retracted, the instrument 3 (biopsy forceps, electric knife, laser fiber, etc.) can be pulled into these special parts through the sheath 1 under visualization to perform operations (such as clamping, electric knife cutting, laser cutting, hemostasis), so that some special and difficult biopsy sites can be better sampled and diagnosed, and some special and difficult lesions can be effectively treated, thereby improving the treatment effect and safety.

[0030] When the patient is undergoing bronchoscopy 2 and the damaged tissue is bleeding, ordinary drugs are not effective and compression is needed to stop bleeding. While keeping the front camera of bronchoscope 2 away from the bleeding point and maintaining a clear field of vision, the truncated cone-shaped opening and closing section 12 of the transparent sheath 1 is brought close to the bleeding point to compress and stop bleeding, and the treatment plan is adjusted according to the hemostatic effect; the hemostatic treatment can be completed safely, effectively and at a low cost (about 20 yuan), and the next step of treatment can be carried out without interrupting the operation. Low cost, high efficiency, safe and effective.

[0031] In this application, unless otherwise clearly specified and limited, the terms "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be an electrical connection; it can be a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in this utility model can be understood according to specific circumstances.

[0032] In the specification of the present utility model, a lot of specific details are described. However, it is understood that the embodiments of the present utility model can be practiced without these specific details. In some examples, well-known methods, systems and techniques are not shown in detail so as not to obscure the understanding of this specification.

[0033] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" etc. means that the specific features, systems, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, systems, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, unless they are contradictory.

[0034] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model, rather than to limit it. Although the utility model has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein by equivalents. These modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the utility model, and they should all be included in the scope of the claims and specification of the utility model.

Claims

1. A protective sheath for use in an instrument channel of a bronchoscope, characterized in that: It includes a sheath body and an opening and closing section arranged at the front end of the sheath body; the sheath body is a hollow tube structure, whose outer diameter is adapted to the inner diameter of the instrument channel, and whose inner diameter is adapted to the outer diameter of the instrument; the opening and closing section is a hollow truncated cone structure surrounded by a plurality of opening and closing parts, the front ends of the opening and closing parts are separated from each other, and the rear ends are connected to the sheath body, and the outer diameter of the front end of the opening and closing section is greater than the outer diameter of the rear end thereof.

2. The protective sheath for use in the instrument channel of a bronchoscope according to claim 1, characterized in that: The outer diameter of the sheath tube body is 20 mm, the thickness is 1 mm, and the inner diameter is 19 mm.

3. The protective sheath for internal use in the instrument channel of a bronchoscope according to claim 1, characterized in that: The outer diameter of the opening and closing section gradually decreases from the rear end to the front end, the outer diameter of the rear end is 20 mm, and the outer diameter of the front end is 10 mm.

4. The protective sheath for internal use in the instrument channel of a bronchoscope according to claim 1, characterized in that: The length of the opening and closing section is 25 mm.

5. The protective sheath for internal use in the instrument channel of a bronchoscope according to claim 1, characterized in that: The sheath tube body and the opening and closing section are made of polyvinyl chloride material.

6. The protective sheath for internal use in the instrument channel of a bronchoscope according to claim 1, characterized in that: The sheath tube body and the opening and closing section are transparent structures.

7. The protective sheath for internal use in the instrument channel of a bronchoscope according to claim 1, characterized in that: A plurality of slits are arranged at intervals along the circumference of the opening and closing section, each of the slits is arranged along the length direction of the opening and closing section, and the slits divide the opening and closing section into a plurality of opening and closing parts.

8. The protective sheath for use in the instrument channel of a bronchoscope according to claim 1, characterized in that: There are three opening and closing parts.

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