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Selectable eccentric remodeling and/or ablation of atherosclerotic material

A technique for atherosclerosis and atherosclerosis, which is applied in the direction of surgical instruments for suctioning substances, parts of surgical instruments, and surgical instruments for drug flushing.

Active Publication Date: 2006-11-22
MINNOW MEDICAL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

These disadvantages include the presence of vulnerable plaque that can rupture and release substances that can lead to myocardial infarction or heart attack

Method used

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  • Selectable eccentric remodeling and/or ablation of atherosclerotic material
  • Selectable eccentric remodeling and/or ablation of atherosclerotic material
  • Selectable eccentric remodeling and/or ablation of atherosclerotic material

Examples

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Embodiment Construction

[0064] The present invention provides devices, systems and methods for remodeling a partially occluded artery, thereby opening the lumen of the artery and increasing blood flow. Remodeling may include the application of electrosurgical energy, typically in the form of RF and / or microwave potentials, to energize energy delivery surfaces such as electrodes, antennas, and the like. This energy will usually be controlled so as to limit the temperature of the target and / or collateral tissue, for example, to limit the heating of the intima layer of the vulnerable plaque fibrous cap or arterial structure to a maximum structural temperature of from about 50 to In the range of about 60°C; by limiting the maximum temperature of the outer layer or vascular adventitia to not exceed about 63°C, thereby limiting the heating of the hyperlipid pools of vulnerable plaques to be sufficient to cause melting of the lipid pools, while limiting other Heating of tissue, such as the intimal layer or ...

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Abstract

This present invention provided a catheter and catheter system for eccentric remodeling and / or removal of atherosclerotic material of a blood vessel of a patient include an elongate flexible catheter body with a radially expandable structure. A plurality of electrodes or other electrosurgical energy delivery surfaces can radially engage atherosclerotic material when the structure expands. An atherosclerotic material detector near the distal end of the catheter body may measure circumferential atherosclerotic material distribution, and a power source selectively energizes the electrodes to eccentrically remodel the measured atherosclerotic material.

Description

[0001] This application is a regular non-provisional patent application claiming priority under Section 35 of USC 119(e) to U.S. Provisional Application No. 60 / 502,515, filed September 12, 2003, which is incorporated herein in its entirety Reference. technical field [0002] The present invention generally relates to medical devices, systems and methods. In exemplary embodiments, the present invention provides a catheter-based method for remodeling and / or clearing of atherosclerotic plaque build-up in an artery to improve blood flow, and such remodeling and / or clearing Balloon angioplasty, stenting, and / or dilation are usually not used. The structure of the present invention allows for image-guided remodeling and / or clearance of eccentric atherosclerosis, and theoretically allows the use of intravascular imaging capabilities with co-localization, where such remodeling and / or clearance is often within the vessel interior. The controlled environment zone uses electrosurgical e...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61B18/18A61B18/14A61B19/00
CPCA61B18/18A61B18/1815A61B2018/0016A61B2018/00214A61B2018/0022A61B2018/0041A61B2018/1861A61B2218/002A61B2218/007A61B2018/00267A61B2018/00654A61B2090/373A61B2090/376A61B2090/3784A61B2090/374A61B18/1492A61B2018/00577A61B2018/00601
Inventor T·A·斯坦克C·W·斯通S·O·罗斯B·S·凯莱赫R·M·米歇尔
Owner MINNOW MEDICAL
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