Telescopic shoulder arthroscope approach cannula

Abstract

A telescopic shoulder arthroscopy approach cannula comprises a cannula body with an internal channel in the middle, an outer clamping part fixed to the outer end of the cannula body, an inner clamping part arranged at the inner end of the cannula body, and a telescopic extension part arranged between the inner clamping part and the cannula body. The extension part comprises a plurality of layers of airbags capable of expanding through inflation and a control device arranged on the airbags and used for inflating and deflating the airbags, the airbags can extend after being inflated and drive the inner clamping part to be away from the cannula body, and the airbags can contract after being deflated and drive the inner clamping part to be close to the cannula body. The air bag is inflated to enable the approach cannula to be in different sizes so that shoulder arthroscopy operations can be carried out on patients of different figures, operation cost is reduced, the size is adjusted through the air bag, swelling occurring when a wound is formed in a human body can be catered, the situation that the wound is excessively swollen, and consequently the operation is affected is prevented, and the operation efficiency is improved. The operation efficiency is improved; and the operation experience of a patient can also be improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to medical accessory field especially, relate to a telescopic shoulder arthroscope access sleeve. BACKGROUND

[0002] The access sleeve is a commonly used tool in arthroscopic surgery, and in the process of using the access sleeve, the length of the access sleeve is often not suitable, which leads to the overlength or shortness of the outer end of the access sleeve when embedded in the human body, and the access sleeve cannot completely match the thickness of the human tissue, so the application range is narrow.

[0003] In view of the problem, manufacturers have also proposed a relatively effective solution, that is, increasing the length of the access sleeve. For example, the original length is only 30mm, 40mm and 50mm, and after increasing, the length is 30mm, 35mm, 40mm, 45mm and 50mm. The problem is solved by increasing the specifications, but the number of manufacturing molds will also increase, the cost will also increase, and at the same time, the access sleeve cannot perfectly match the human body.

[0004] The prior art includes a sleeve, a gasket, and a thin section face at one end of the tissue. The defect is obvious, the length of the sleeve cannot perfectly match the thickness of the tissue, and the overlength of the sleeve causes damage during the operation process. INVENTION CONTENTS

[0005] The utility model solves the above-mentioned problems existing in the prior art, and provides a telescopic shoulder arthroscope access sleeve, which can match the thickness of the human tissue.

[0006] The technical scheme adopted by the application to solve the technical problem: the telescopic shoulder arthroscope access sleeve includes a sleeve main body with an internal passage in the middle, an outer clamping part fixed at the outer end of the sleeve main body, and an inner clamping part arranged at the inner end of the sleeve main body, characterized in that: a telescopic extension part is arranged between the inner clamping part and the sleeve main body, the extension part includes a plurality of layers of inflatable air bags and a control device arranged on the air bags and used for inflating and deflating the air bags, the air bags are inflated to extend and drive the inner clamping part away from the sleeve main body, and the air bags are deflated to contract and drive the inner clamping part close to the sleeve main body. The inflatable air bags can be used for the same access sleeve for patients with different body sizes.

[0007] In order to further improve, the sleeve main body is provided with a mounting part for fixedly mounting the inner clamping part, and the extension part is provided with a matching part matched with the mounting part. The mounting part and the matching part can ensure that the air bags can be stably mounted on the sleeve main body.

[0008] Further improvement, the mounting part is arranged on one side of the sleeve main body close to the inner clamping part, and the mounting part is arranged on the edge of the sleeve main body and protrudes outward in a ring shape.

[0009] For further improvement, the matching portion is arranged on a side of the extension portion close to the sleeve body, and an installation space is provided inside the matching portion for matching with the installation portion.

[0010] Further improvement, the control device includes a gas channel connected to the airbag and assisting the airbag in inflating and deflating, and an air pump that injects or extracts gas from the gas channel. The air pump can quickly inflate and deflat the airbag, improving the efficiency of the cannula.

[0011] Further improvement, a limit plate is provided on the side of the outer engaging portion away from the cannula body to prevent the cannula body from excessively entering the human body. The limit plate can prevent the access cannula from excessively entering the human body and thus affecting the operation.

[0012] Further improvement, the outer engaging portion is provided with an outer blocking portion to prevent foreign matter from entering the human body. The outer blocking portion can effectively prevent foreign matter from entering the human body through the wound.

[0013] Further improvement, the inner engaging portion is provided with an inner blocking portion to prevent the body fluid inside the human body from overflowing from the access channel to the outside of the human body. The inner blocking portion can effectively prevent the joint fluid from flowing out of the wound and thus affecting the progress of the operation.

[0014] Further improvement, the inner engaging portion is provided with a positioning plate to prevent the sleeve body from accidentally detaching during the operation. The positioning plate can prevent the access sleeve from accidentally detaching, thereby affecting the progress of the operation.

[0015] The beneficial effects of the present invention are as follows: the present invention allows the access cannula to be changed to different sizes by inflating the airbag, thereby performing shoulder arthroscopic surgery on patients of different body shapes, reducing the cost of surgery, and using the airbag to adjust the size can also cater to the swelling that occurs when a wound is opened on the human body, preventing the wound from being excessively swollen and thus affecting the surgery, thereby improving the efficiency of the surgery and also enhancing the patient's surgical experience. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a structural diagram of an existing access cannula;

[0017] Figure 2 It is a structural diagram of the utility model;

[0018] Figure 3 Schematic diagram of the structure of the access cannula;

[0019] Figure 4 It is a structural diagram of the inner engaging portion.

[0020] Explanation of reference signs: sleeve body 1, outer clamping portion 2, inner clamping portion 3, extension portion 4, air bag 5, control device 6, mounting portion 7, matching portion 8, mounting space 9, gas passage 10, gas pump 11, limiting plate 12, outer blocking portion 13, inner blocking portion 14, positioning plate 15. DETAILED DESCRIPTION

[0021] The preferred specific embodiments of the present application are provided below in combination with the drawings, and the disclosed are only the preferred specific embodiments of the present application, and of course cannot limit the right scope of the present application, and equivalent changes made according to the claims of the present application still belong to the scope covered by the present application.

[0022] Reference is made to the accompanying drawings Figure 1 : The structure is the specific structure of the existing shoulder arthroscopy access sleeve, which comprises a sleeve body, inner clamping portions and outer clamping portions arranged on both sides of the sleeve body. In the existing structure, the inner clamping portions are directly fixed and installed on the sleeve body, so the length of the access sleeve is directly determined by the sleeve body. Different patients have great differences in body size. In order to enable patients of various sizes to use the access sleeve, access sleeves of different sizes need to be used. The access sleeve is usually made of polyethylene or other materials with a certain hardness, which leads to the use of different production machines for making access sleeves of different sizes, thereby increasing the production cost.

[0023] In order to solve the above problems, the present application provides a telescopic shoulder arthroscopy access sleeve, which comprises a sleeve body 1 with an internal passage in the middle, an outer clamping portion 2 fixed at the outer end of the sleeve body 1, and an inner clamping portion 3 arranged at the inner end of the sleeve body 1. The telescopic shoulder arthroscopy access sleeve is characterized in that: a telescopic extension portion 4 is arranged between the inner clamping portion 3 and the sleeve body 1. The extension portion 4 comprises a plurality of layers of air bags 5 that can be inflated and deflated, and a control device 6 arranged on the air bags 5 and used for inflating and deflating the air bags 5. When the air bags 5 are inflated, the inner clamping portion 3 is extended and driven away from the sleeve body 1. When the air bags 5 are deflated, the inner clamping portion 3 is retracted and driven to approach the sleeve body 1.

[0024] The sleeve body 1 is made of polyethylene and is integrally formed. The material and manufacturing process of the air bags 5 are different from those of the sleeve body 1, so the air bags 5 can only be installed on the sleeve body 1 after the production of the sleeve body 1 is completed. In order to stably install the air bags 5 on the sleeve body 1, a mounting portion 7 for fixedly mounting the inner clamping portion 3 is arranged on the sleeve body 1. A matching portion 8 for cooperating with the mounting portion 7 is arranged on the extension portion 4. The mounting portion 7 is arranged on one side of the sleeve body 1 close to the inner clamping portion 3. The mounting portion 7 is arranged on the edge of the sleeve body 1 and protrudes outward in a ring shape. The matching portion 8 is arranged on one side of the extension portion 4 close to the sleeve body 1. An installation space 9 for cooperating with the mounting portion 7 is arranged in the matching portion 8.

[0025] The control device 6 comprises a gas passage 10 connected with the air bag 5 and assisting the air bag 5 to inflate and deflate, and a gas pump 11 injecting or extracting gas into or out of the gas passage 10.

[0026] The access cannula needs to be placed into the human body during use, and the limiting plate 12 is arranged on the side, away from the cannula body 1, of the outer clamping part 2 to prevent the cannula body 1 from excessively entering the human body, wherein the diameter of the limiting plate 12 is greater than the outer diameter of the cannula diameter.

[0027] Since the access cannula is used in the human body, the outer blocking part 13 is arranged at the outer clamping part 2 to prevent sundries from entering the human body, and the inner blocking part 14 is arranged at the inner clamping part 3 to prevent the body fluid in the human body from overflowing from the access channel to the outside of the human body. The main function of the access cannula is to provide a channel for the shoulder arthroscope to enter the joint for operation, and the positioning plate 15 is arranged at the inner clamping part 3 to prevent the cannula body 1 from accidentally separating during the operation.

[0028] Finally, it should be noted that: the above examples are only used to illustrate the technical solutions of the present application, and not to limit them; although the present application has been described in detail with reference to the foregoing examples, those skilled in the art should understand that: it can still modify the technical solutions recorded in the foregoing examples, or make equivalent replacement for part of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present application.

Claims

1. A retractable shoulder arthroscopic access cannula, comprising a cannula body (1) with an internal passage in the middle, an external engaging portion (2) fixed to the outer end of the cannula body (1), and an internal engaging portion (3) arranged at the inner end of the cannula body (1), characterized in that: A retractable extension portion (4) is provided between the inner engaging portion (3) and the sleeve body (1). The extension portion (4) comprises a plurality of layers of inflatable airbags (5) and a control device (6) provided on the airbags (5) for inflating and deflating the airbags (5). When the airbags (5) are inflated, they extend and drive the inner engaging portion (3) away from the sleeve body (1). When the airbags (5) are deflated, they contract and drive the inner engaging portion (3) closer to the sleeve body (1).

2. The retractable shoulder arthroscopic access cannula according to claim 1, characterized in that: The sleeve body (1) is provided with a mounting portion (7) for fixing the inner engaging portion (3), and the extension portion (4) is provided with a matching portion (8) for matching with the mounting portion (7).

3. The retractable shoulder arthroscopic access cannula according to claim 2, characterized in that: The mounting portion (7) is arranged on one side of the sleeve body (1) close to the inner engaging portion (3); the mounting portion (7) is arranged on the edge of the sleeve body (1) and protrudes outward in a ring shape.

4. The retractable shoulder arthroscopic access cannula according to claim 2, characterized in that: The matching portion (8) is arranged on a side of the extension portion (4) close to the sleeve body (1), and an installation space (9) for matching and installing with the installation portion (7) is provided inside the matching portion (8).

5. The retractable shoulder arthroscopic access cannula according to claim 1, characterized in that: The control device (6) includes a gas channel (10) connected to the airbag (5) and assisting the airbag (5) in inflating and deflating, and an air pump (11) for injecting gas into or extracting gas from the gas channel (10).

6. The retractable shoulder arthroscopic access cannula according to claim 1, characterized in that: A limiting plate (12) is provided on the side of the outer engaging portion (2) away from the sleeve body (1) to prevent the sleeve body (1) from excessively entering the human body.

7. The retractable shoulder arthroscopic access cannula according to claim 1, characterized in that: The outer engaging portion (2) is provided with an outer blocking portion (13) for preventing foreign matter from entering the human body.

8. The retractable shoulder arthroscopic access cannula according to claim 1, characterized in that: The inner engaging portion (3) is provided with an inner blocking portion (14) for preventing body fluids inside the human body from overflowing from the inlet channel to the outside of the human body.

9. The retractable shoulder arthroscopic access cannula according to claim 1, characterized in that: The inner engaging portion (3) is provided with a positioning plate (15) for preventing the sleeve body (1) from accidentally disengaging during surgery.

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