A sheath tube with adjustable diameter

An adjustable and sheath technology, which is applied in the field of medical devices, can solve the problems of non-adjustable tube diameters, reduce the risk of pain and injury, reduce resistance and difficulty, and improve the safety of use

Active Publication Date: 2017-10-13
THE SECOND AFFILIATED HOSPITAL ARMY MEDICAL UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In the embodiment of the present invention, a sheath tube with adjustable diameter is provided to solve the problem that the diameter of the sheath tube in the prior art cannot be adjusted during use

Method used

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  • A sheath tube with adjustable diameter
  • A sheath tube with adjustable diameter
  • A sheath tube with adjustable diameter

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] see figure 1 , is a schematic diagram of the structure of the first adjustable diameter sheath provided by the embodiment of the present invention. The embodiment of the present invention provides a sheath with adjustable diameter, including a wall clamping layer 1, a tubular body 2 and a main channel 3 , wherein, the sandwich layer 1 is wrapped outside the tubular body 2, and the tubular body 2 is in contact with the inner and outer membranes of the sandwich layer 1; the main channel 3 is arranged in the sandwich layer 1 , and one end extends out of the sandwich layer 1 , and the main channel 3 communicates with the tubular body 2 .

[0037] The sandwich layer 1 is composed of two inner and outer membranes with a fixed size. The top and end of the inner and outer membranes are connected to form an annular cavity, and the tubular body 2 that can be filled with liquid or gas is arranged in a ring in the cavity, and the two sandwich layers 1 are all connected with liquid...

Embodiment 2

[0053] like Figure 4 and Figure 5 as shown, Figure 4 Schematic diagram of the arrangement structure of tubular bodies in the second diameter-adjustable sheath provided by the embodiment of the present invention; Figure 5 The cross-sectional top schematic diagram of the second adjustable diameter sheath provided for the embodiment of the present invention, in Figure 5 Among them, the tubular body 2 is in a fully expanded state after being filled with gas or liquid.

[0054] The difference between this embodiment and Example 1 is that the arrangement of the liquid-filled or air-filled tubular body 2 and the main channel 3 used in this example is different. In this embodiment, the tubular body 2 is axially arranged in the clamp In the wall layer 1, the main channel 3 and the tubular body 2 are arranged vertically.

[0055] The main channel 3 is arranged at one end of the tubular body 2, the end of the tubular body 2 connected to the main channel 3 is provided with a conn...

Embodiment 3

[0058] see Image 6 and Figure 7 , Image 6 Schematic diagram of the arrangement structure of tubular bodies in the third type of diameter-adjustable sheath provided by the embodiment of the present invention; Figure 7 A cross-sectional top schematic diagram of the third type of sheath tube with adjustable diameter provided by the embodiment of the present invention, Figure 7 The tubular body 2 is in a fully expanded state, and then completely supports the sandwich layer 1 apart.

[0059] Compared with Example 1 and Example 2, this embodiment is different in that the arrangement of the tubular body 2 used in this example is different, and the tubular body 2 is evenly wound in the sandwich wall layer 1, Two tubular bodies 2 are arranged in the wall layer 1, one end of the tubular bodies 2 is directly connected to the main channel 3, and the tubular bodies 2 are spirally arranged in the sandwiched wall layer 1,

[0060] When in use, gas or liquid is passed into the main c...

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PUM

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Abstract

An embodiment of the invention discloses a sheathing canal with the adjustable canal diameter. The sheathing canal comprises a sandwich wall layer, a tubular body and a main channel, wherein the sandwich wall layer comprises an inner membrane and an outer membrane and covers the tubular body; the tubular body is contacted with the inner membrane and the outer membrane of the sandwich wall layer; the main channel is arranged in the sandwich wall layer, one end of the main channel extends out of the sandwich wall layer, and the main channel is communicated with the tubular body; the main channel comprises a valve, the valve is arranged at one end, extending out of the sandwich wall layer, of the main channel, and a gas or a liquid is introduced into the main channel through the valve to change the diameter of the tubular body. The sheathing canal can pass through a cavity with the smaller inner diameter; compared with existing large-diameter instruments, the sheathing canal has the advantages that resistance and difficulty in the insertion process can be reduced, the canal insertion success rate is increased, pain and injuries caused by canal insertion and drawing to human body tissue are reduced, and usage safety, convenience and wide applicability of the sheathing canal are improved.

Description

technical field [0001] The invention relates to the technical field of medical instruments, in particular to a sheath tube with adjustable diameter. Background technique [0002] Endoscopic operation is widely used in clinical medicine, and has the advantages of less damage and faster postoperative recovery. Before performing endoscopic operation, it is often necessary to establish a working channel in advance by means of various operating sheaths, and then enter the body through the cavity inside the operating sheath for operation. [0003] At present, the commonly used clinical method of using the operating sheath to establish a channel is the external expansion method, that is, a thin guide wire is first inserted as a guide, and then a sheath with a fixed diameter is inserted along the guide wire. Become a channel into the body, and then exit the guide wire, the channel construction is completed. [0004] However, in the prior art, the diameters of the fixed sheath tube...

Claims

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Application Information

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Patent Type & AuthorityPatents(China)
IPC IPC(8): A61B17/00
CPCA61B17/00234A61B2017/003A61B2017/0034
Inventor黄赤兵谭明亮胡文刚肖亚冯嘉瑜周宏
OwnerTHE SECOND AFFILIATED HOSPITAL ARMY MEDICAL UNIV