Bronchus plugging support

Abstract

The utility model discloses a bronchus blocking support which comprises a compressible silk screen pipe support, closing sleeves are arranged at the two ends of the silk screen pipe support, and the surface of the silk screen pipe support is coated with a layer of medical leakage-proof film. And at least one closing sleeve is provided with an internal thread. The silk screen pipe bracket is made of a nickel-titanium memory alloy material; the medical leakage-proof film is made of silicone rubber or polyurethane. The bronchus blocking device can be better attached to the bronchus, is better in comfort, is convenient to operate and can be widely applied to the bronchus blocking field.

Description

Technical Field

[0001] The utility model relates to the technical field of medical devices, in particular to a bronchial blocking stent. Background Art

[0002] Bronchial occlusion is one of the important technologies for treating refractory pneumothorax, and the main method of bronchial occlusion is to use bronchial plugs to block the bronchi. For example, the Chinese patent application number is 202120537561.0, a bronchial plug inserter and a bronchial plug, a bronchial plug, including an embedding section and a sealing section, the embedding section is an ellipsoid, the sealing section is a disc, and the sealing section and the ellipsoid are coaxially connected together; the outer diameter of the sealing section is greater than the maximum outer diameter of the embedding section, and a circle of grooves is formed at the connection between the sealing section and the embedding section, and the side walls and edges of the grooves are both arc-shaped. At the same time, a threaded column is coaxially embedded in the end of the sealing section away from the embedding section, and the threaded column protrudes from the sealing section. This structure relies on the ellipsoidal embedding section to achieve blocking. Although it can play a good blocking role, the overall fit of the structure to the inner wall of the bronchus is poor, and the local extrusion force is large. If it is compressed to the lesion, it may cause greater pain and damage. Moreover, the structure cannot shrink. During operation, it is fixed at the front end of the inserter, which is placed in the endoscope and then sent into the bronchus together. Since the sealing section of the bronchial plug close to the endoscope is a disc, it will affect the line of sight of the endoscope. The endoscope cannot know the specific location of the lesion while moving forward. The position of the bronchial plug needs to exceed the lesion position so that the endoscope can see it and then move back to drive the bronchial plug to move back and place the bronchial plug at the lesion position. Since the endoscope cannot see the location of the lesion after moving back, it is also an approximately accurate position and cannot achieve better accuracy. Moreover, the bronchial plug is in an open state when entering, so it will open the bronchus it passes through, causing discomfort to the patient. Utility Model Content

[0003] The utility model aims to provide a bronchial blocking bracket to solve the problem that the existing bronchial plugs are subjected to large local extrusion force and affect the comfort of patients.

[0004] The utility model solves the technical problem by adopting the following technical solution: a bronchial blocking stent, comprising a compressible wire mesh tube stent, both ends of which are provided with closing sleeves, and the surface of the wire mesh tube stent is coated with a layer of medical leak-proof film; at least one of the closing sleeves is provided with an internal thread.

[0005] Preferably, the wire mesh tube stent is made of nickel-titanium memory alloy.

[0006] Preferably, the material of the medical leak-proof membrane is silicone rubber or polyurethane.

[0007] In order to isolate the lesion site without compressing it, an annular groove or pit is provided on the wire mesh tube support.

[0008] The beneficial effects of the utility model are as follows: the blocking stent is retractable, and therefore, can block bronchi of different thicknesses, and has better versatility. At the same time, due to its retractability, it has good adhesion to the inner wall of the bronchus, and can not only achieve a good blocking purpose, but also isolate the lesion by placing the blocking stent at the lesion site, and play a role in hemostasis and gas blocking. The blocking device can be retracted into the inserter, and then the inserter can be sent into the bronchus through the endoscopic forceps channel. After reaching the position, the bronchial blocking stent is released under the direct vision of the endoscope, so it will not affect the line of sight of the endoscope, and the operation is more accurate and convenient.

[0009] The present invention will be described in more detail below with reference to the accompanying drawings and embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] Figure 1 The structure of the utility model is shown in FIG. Figure 1 .

[0011] Figure 2 The structure of the utility model is shown in FIG. Figure 2 .

[0012] Figure 3 The structure of the utility model is shown in FIG. Figure 3 . DETAILED DESCRIPTION

[0013] Examples, such as Figures 1 to 3 As shown, a bronchial blocking stent is used to block the bronchus, and the blocking stent includes a compressible wire mesh tube stent 1, which is made of nickel-titanium memory alloy material, can shrink under pressure, and can be stretched outward when there is no force or the force is reduced. Closing sleeves 2 are provided at both ends of the wire mesh tube stent 1, and a layer of medical leak-proof membrane 3 is coated on the surface of the wire mesh tube stent 1, so as to form a cylindrical structure with both ends and side walls closed. The medical leak-proof membrane 3 is preferably made of silicone rubber or polyurethane.

[0014] In order to facilitate the wire mesh tube stent 1 to be embedded in the gap between the bronchial joints and prevent the blocking stent from moving, an annular groove 4 can also be provided on the wire mesh tube stent 1. Both sides of the annular groove 4 are provided with raised portions 5. The raised portions 5 can be inserted into the gap between the joints to prevent movement. At the same time, the contact surface can be increased to improve the reliability of the seal. In addition, the annular groove can also play a role in partially sealing gas and liquid. The arrangement of the annular groove 4 and the raised portion 5 is as follows: Figure 2 As shown in 3, one or more parameters can be set.

[0015] In order to facilitate the combination with the inserter and facilitate the insertion, at least one of the closing sleeves 2 is provided with an internal thread, which is arranged at the end away from the wire mesh tube stent 1 and connected with the external thread on the inserter. The internal thread structure can better protect the bronchus from damage. The closing sleeve 2 is a metal sleeve structure, which is sleeved on both ends of the wire mesh tube stent 1 and tightened to fix the seal.

[0016] During operation, the bronchial occlusion stent is connected to the front end of the inserter by bolts, radially compressed and collected into the inserter, and enters the body through the endoscope clamp channel. When it reaches the designated position, under direct vision of the endoscope, the outer tube of the inserter is withdrawn to allow the bronchial occlusion stent to complete dilation, the inner rod of the inserter is rotated to completely separate the bronchial occlusion stent from the inserter, and the inserter and the endoscope are withdrawn.

[0017] The above is an exemplary description of the utility model in conjunction with the accompanying drawings. Obviously, the specific implementation of the utility model is not limited to the above-mentioned method. As long as various non-substantial improvements are made using the method concept and technical solution of the utility model; or the above concept and technical solution of the utility model are directly applied to other occasions without improvement, they are all within the protection scope of the utility model.

Claims

1. A bronchial occlusion stent, characterized in that: It comprises a compressible wire mesh tube support (1), both ends of which are provided with closing sleeves (2), and the surface of the wire mesh tube support (1) is coated with a layer of medical leakproof film (3); at least one of the closing sleeves (2) is provided with an internal thread.

2. The bronchial occlusion stent according to claim 1, characterized in that: The material of the wire mesh tube support (1) is nickel-titanium memory alloy material.

3. The bronchial occlusion stent according to claim 1, characterized in that: The material of the medical leak-proof membrane (3) is silicone rubber or polyurethane.

4. The bronchial occlusion stent according to claim 1, characterized in that: The wire mesh tube support (1) is provided with an annular groove or pit (4).

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