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Right ventricular outflow tract mapping and angiographic catheter and preparation method of angiographic catheter

An outflow tract and catheter technology, applied in the field of medical surgical instruments and their preparation, can solve the problem of taking a long time, and achieve the effects of convenient operation and shortening of operation time.

Active Publication Date: 2012-07-18
洪浪
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

For ventricular arrhythmias, especially premature ventricular contractions, the incidence of outflow tract premature ventricular tachycardia is as high as 60%. Interventional doctors look for targets in the outflow tract according to the surface electrocardiogram, three-dimensional mapping system and personal experience. If the patient There are few premature ventricular or ventricular tachycardias during the operation, and it takes a lot of time to map

Method used

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  • Right ventricular outflow tract mapping and angiographic catheter and preparation method of angiographic catheter
  • Right ventricular outflow tract mapping and angiographic catheter and preparation method of angiographic catheter
  • Right ventricular outflow tract mapping and angiographic catheter and preparation method of angiographic catheter

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Effect test

preparation example Construction

[0033] The preparation method of the right ventricular outflow tract annular mapping catheter of the present invention comprises the following steps:

[0034] 1. Make parts. The catheter 3 is made of elastic nylon PEBAX tube from Access Point Technologies US (www.aptmed.com), with an outer diameter of 2.0-2.4mm, an inner diameter of 1.5-2.0mm, and a length of 850-1200mm. Make the mapping section 4, wrap one end of the elastic nylon material PEBAX tube of Access Point Technologies US company in the United States with an outer diameter of 1.4-2.4mm, an inner diameter of 1.0-2.0mm, and a length of 100-150mm on the annular groove 17 of the mould. The remaining part after one turn is led out along the groove 18, and is molded on the thermoforming machine of Shenzhen Huitai Medical Instrument Co., Ltd. It takes 600 seconds from room temperature to the molding heating temperature of 400°C, the heating time is 30 minutes, and it is naturally cooled to room temperature , made into a ma...

Embodiment 1

[0040] Example 1, in vitro test, using a piece of fresh beef with a size of 200×200×100 mm, a right ventricular outflow tract mapping catheter of the present invention, a terminal electrode diameter of 2 mm, a length of 2 mm, and nine ring electrodes with an outer diameter of 2.0mm, the length is 1mm, and the polyconductor is a multichannel physiological recorder in the prior art. The test is divided into two processes, the first process is the mapping of 9 electrodes one by one. After the right ventricular outflow tract mapping catheter is inserted through the sheath, the connector is manipulated to release the mapping section of the annular mapping catheter into an O-ring, so that the ring electrode on the O-ring mapping section is in close contact with the beef. During the test, the mapping of each electrode one by one is normal, and the normal value is between 60 and 100 bpm, which are all within the range. The second process is bipolar mapping, that is, the terminal elec...

Embodiment 2

[0041] Embodiment 2: Animal experiment, live dog, healthy male dog, body weight 20 kilograms, age 2 years old. One right ventricular outflow tract mapping catheter of the present invention, the diameter of the O-ring in the mapping section is 18 mm, the length of the terminal electrode is 2 mm, and the outer diameter is 1.2 mm, and the length of nine ring electrodes is 1 mm, and the outer diameter is 1.2 mm. mm. Put the right ventricular outflow tract mapping catheter into the right ventricular outflow tract through the sheath. Under the monitoring of Siemens DSAX, firstly push the connector to make the right ventricular outflow tract mapping catheter bend and deform. The distal end reaches the pulmonary artery ostium, and then forward Push the right ventricular outflow tract mapping catheter, push the mapping section out of the sheath, release the mapping section in an O-ring shape, and push the connector to rotate the O-ring section to reach the pulmonary artery orifice. Ho...

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Abstract

The invention discloses a right ventricular outflow tract mapping and angiographic catheter and a preparation method of the angiographic catheter, and aims to solve the technical problem that an exact position of a target cannot be accurately positioned in the prior art. The right ventricular outflow tract mapping catheter disclosed by the invention is provided with a catheter. The end part of the far end of the catheter is provided with a mapping section. The mapping section is an open O-shaped ring in a free state. An end electrode is arranged at the end part of the mapping section. A ring electrode is arranged on the surface of the mapping section. The near end of the catheter is connected with a connector. The connector is electrically connected with the ring electrode and the end electrode by wires. The preparation method disclosed by the invention comprises the following steps: making parts; and assembling the parts. Compared with the prior art, the end part of the far end of the mapping catheter is provided with the mapping section which is of an O-shaped structure; the mapping section has elasticity and can be strengthened, so that the right ventricular outflow tract mapping and angiographic catheter is convenient to rapidly feed and the operating time is shortened; the mapping section is of an O-shaped structure in the free state; and the ring electrode on the mapping section which is of an O-shaped structure can define the position of the target and the ablation energy in the ablation process by mapping the right ventricular outflow tract, so that the right ventricular outflow tract mapping and angiographic catheter is safer and more effectively and is convenient to operate in the complete operating process.

Description

technical field [0001] The invention relates to a medical operation instrument and a preparation method thereof, in particular to a mapping catheter for interventional treatment of arrhythmia and a preparation method thereof. Background technique [0002] Ventricular arrhythmia, especially ventricular premature beats, is the most common clinical arrhythmia. Long-term drug treatment has large side effects and poor curative effect. In recent years, more and more patients have received radiofrequency ablation of ventricular arrhythmia under the guidance of a three-dimensional mapping system, but the success rate of the operation ranges from 50-90%. Finding the target effectively and quickly during the operation is the key to determine the success rate of the operation. For ventricular arrhythmias, especially premature ventricular contractions, the incidence of outflow tract premature ventricular tachycardia is as high as 60%. Interventional doctors look for targets in the out...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61B5/0402A61B5/00
Inventor 洪浪
Owner 洪浪
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