Ablation catheter with balloon

A technology for ablation catheters and balloons, which is applied in parts of surgical instruments, medical science, heating surgical instruments, etc., can solve problems such as unstable temperature control on the surface of the balloon, suppress the risk of disconnection, etc., and reduce the burden on patients , high-precision effect

Active Publication Date: 2014-02-12
TORAY IND INC
View PDF7 Cites 7 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, it is also known at the same time that since the thermocouple temperature sensor is also located near the lumen communicating with the inside of the balloon, it is easil

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Ablation catheter with balloon
  • Ablation catheter with balloon
  • Ablation catheter with balloon

Examples

Experimental program
Comparison scheme
Effect test

Embodiment ）

[0062] A balloon 2 made of polyurethane with a diameter of 30 mm and a thickness of 20 μm was produced by blow molding in which air was injected into the lumen of the polyurethane tube while elongating it.

[0063] A polyurethane tube with an outer diameter of 4 mm, an inner diameter of 3 mm, and a total length of 1000 mm is made into an outer cylinder shaft 5, and a luer lock 12 provided at the rear end is inserted and fitted with a Y-shaped joint 13, and then glued and fixed . In addition, the inner cylinder shaft 6 was made of a polyimide tube with an outer diameter of 1.8 mm, an inner diameter of 1.4 mm, and a total length of 1100 mm.

[0064] A copper wire with a diameter of 0.3 mm covered by electrical insulation protection is used as a high-frequency power supply lead 8 , and a constantan wire with a diameter of 0.1 mm covered by an electrical insulation protection is used as a temperature sensor lead 9 .

[0065] Parts of the electrical insulation protective coverings...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

PropertyMeasurementUnit
Outer diameteraaaaaaaaaa
The inside diameter ofaaaaaaaaaa
Full lengthaaaaaaaaaa
Login to view more

Abstract

The present invention has the objective of providing an ablation catheter with balloon which achieves together a decrease in diameter of the balloon at balloon contraction time and increase in reliability of a thermocouple temperature sensor, and simultaneously is resistant to being affected by a heating liquid delivered to within the balloon and is capable of controlling balloon surface temperature with high precision. The present invention is an ablation catheter with balloon which is provided with a shaft having a lumen, a balloon such that the lumen is in communication with the interior of the balloon, and a high-frequency current-delivering electrode which is formed by winding a high-frequency power supply lead wire into a coil around the shaft while sandwiching a temperature sensor lead wire between the high-frequency power supply lead wire and the shaft so that the temperature sensor lead wire is fixed along the long axis direction of the shaft. A thermocouple temperature sensor is formed at a point where the high-frequency power supply lead wire and the temperature sensor lead wire, which configure the high-frequency current-delivering electrode, first come into tactile contact as viewed from the rear end side in the long axis direction.

Description

technical field [0001] The present invention relates to ablation catheters with balloons. Background technique [0002] Catheter ablation is a method of inserting an ablation catheter into the heart chamber, and using an electrode installed at the front end of the catheter to cauterize myocardial tissue to treat arrhythmia. [0003] In recent years, an ablation catheter with a balloon has been developed in which a balloon attached to the distal end side of the catheter is introduced into the inferior vena cava through the skin so that it reaches the left atrium from the right atrium of the heart through the interatrial septum, Here, high-frequency power is used to heat the expanded balloon to cauterize myocardial tissue (Patent Documents 1 and 2). This kind of ablation catheter with a balloon has become the mainstream of catheter ablation. [0004] The ablation catheter with a balloon uses a heating liquid to inflate the balloon attached to the tip of the catheter, and then...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
IPC IPC(8): A61B18/14A61F2/958A61M25/10
CPCA61B2018/0022A61B2018/00642A61B2018/00434A61B2018/00357A61B2018/00702A61B18/1492A61B2018/00511A61B2018/00821A61B2018/00577
Inventor 原田纮行高冈元纪松熊哲律八木隆浩
Owner TORAY IND INC
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap