Catheter for main pulse tube intervention operation
A technology of interventional surgery and catheter, which is applied in the field of catheter for main vessel interventional surgery, can solve the problems of complicated operation process, hard tube body, increased risk, etc., and achieve the effect of simplifying the operation process, realizing changes, and reducing the number of uses
Active Publication Date: 2008-09-10
ZHUHAI INST OF ADVANCED TECH
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Problems solved by technology
[0005] Due to the limitation of the diameter of the catheter device, at least three catheters (the first catheter, the second catheter and the stent catheter) are required in the above-mentioned process of placing the stent, the operation process is complicated, and the operation time is prolonged; the increase in the number of devices also increases the burden of operation costs ; and the diameter of the second catheter is relatively large and the tube body is relatively hard, which makes it difficult to insert, resulting in increased surgical complexity and risk
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[0027] A catheter for main vessel interventional operations, including a set of memory metal rings 100, wires 200 and a covering film 300, such as figure 1 shown. The memory metal rings 100 are arranged axially along the conduit, and each memory metal ring 100 is a cross-section of the conduit. The memory metal rings 100 memorize the low-temperature shape at low temperature and the high-temperature shape at high temperature. As the temperature changes, the memory The metal ring 100 deforms between the low-temperature shape and the high-temperature shape. In this embodiment, the curvature radius of the high-temperature shape is greater than that of the low-temperature shape. The metal wire 200 connects the group of memory metal rings 100 arranged axially along the catheter, and the wire 200 and the memory metal ring 100 form a mesh structure 400 . The covering film 300 is in contact with the mesh structure 400 to form a tubular cavity. The covering film 300 has two functions. ...
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The invention discloses a duct for main vascular interventional operation and consists of a ring axially which is arranged along the duct, a wire axially which is connected with the ring for forming a network structure and a tectorial membrane contacting with the network structure and forming a tubular cavity. The metal ring is a memory metallic ring, which memorizes the low temperature shape in low temperature and the high temperature shape in high temperature and deforms between the low temperature shape and the high temperature shape with the change of the temperature. By adopting the invention, the duct quantity can be reduced and the operating procedures of the operation can be simplified.
Description
technical field [0001] The invention relates to a device for infusing a medium into or onto a human body, in particular to a catheter for main vessel interventional operations. Background technique [0002] Interventional therapy is a method of treating diseases of various organs of the body by inserting catheters, guide wires, etc. At present, interventional therapy has become one of the most timely and effective ways to treat cardiovascular and cerebrovascular diseases. [0003] Main vessels may include arteries, veins, or various body lumens in which it is desired to deploy a stent. In the prior art, catheters used for main vessel interventional operations are thin-walled hollow plastic tubes manufactured by special processes, which can be divided into two types in terms of their material structure: one is thick metal wires woven into nets in the catheter body. Wall catheter, also called network catheter, this kind of catheter has high torque strength, is easy to contro...
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IPC IPC(8): A61M25/00
Inventor 马炘
Owner ZHUHAI INST OF ADVANCED TECH