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Method for removing plaque from blood vessels using ultrasonic energy

a technology of ultrasonic energy and blood vessels, applied in the field of ultrasonic energy removal methods and apparatuses, can solve problems such as second-degree damage to the vessel, and achieve the effects of preventing damage to the vessel wall, and reducing the risk of strok

Inactive Publication Date: 2005-06-30
CYBERSONICS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

"The present invention provides a method and apparatus for removing plaque, fatty deposits, and other occlusions from blood vessels, particularly the carotid artery, using ultrasonic energy. The invention is designed to be minimally invasive and can be used in both traditional surgery and out-patient treatment with minimal post-surgical complications. The device has a small cross-sectional profile, allowing for easy insertion and minimal damage to the artery. The method and apparatus use transverse ultrasonic energy, which is highly efficient and requires less energy to stimulate cavitation. The invention avoids complications associated with thermal destruction or necrosis of tissue and maintains elasticity. Various means to remove plaque from blood vessels are also known in the art, including carotid surgery."

Problems solved by technology

This maximum contact fashion—where the plaque is “torn” from the vessel—causes secondary damage to the vessel.

Method used

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  • Method for removing plaque from blood vessels using ultrasonic energy
  • Method for removing plaque from blood vessels using ultrasonic energy
  • Method for removing plaque from blood vessels using ultrasonic energy

Examples

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Embodiment Construction

[0055]FIG. 1 shows an embodiment of a handle 5 used with the present invention. The handle 5 is composed of an irrigation fitting or luer 2, a grasping area 3, and a probe fitting 4. The irrigation fitting or luer 2 is configured for connection with a flexible tube which is in turn connected to a source of pressurized irrigating fluid, such as water. The grasping area 3 is shaped for grasping by the hand of the apparatus operator, such as a surgeon, and may include one or more trigger or button mechanisms for activating and deactivating various features of the apparatus, such as suction, irrigation, power, etc.

[0056]FIGS. 2 and 3 show an embodiment of the ultrasonic treatment apparatus 1 of the present invention, which includes the handle 5 shown in FIG. 1. The ultrasonic treatment apparatus 1 includes an ultrasonic probe 6 with an ultrasonic probe tip 7. The ultrasonic probe 6 is axially movably mounted within an aspiration sheath or catheter 70, so that the probe tip 7 may move a...

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Abstract

A method and apparatus for removing plaque, fatty deposits, and other occlusions from blood vessels using ultrasonic energy. The method and apparatus has particular application in removing plaque from the carotid artery in a non-thermal manner. The apparatus is designed to have as small a cross-sectional profile as possible, therefore allowing the apparatus to be used in a minimally-invasive manner. As a result, the apparatus can be used in both surgical and outpatient treatment with minimal post-operative complications and minimal damage to areas other than the area of treatment. An ultrasonic probe may include aspiration channels on its outer surface. An aspiration sheath may surround the ultrasonic probe, such that the location of an aspiration port may be varied axially relative to the ultrasonic tip.

Description

RELATED APPLICATIONS [0001] This is a divisional of application Ser. No. 10 / 635,200, filed Aug. 6, 2003, which is a divisional of application Ser. No. 09 / 972,555, now U.S. Pat. No. 6,660,013, filed Oct. 5, 2001, which is a continuation-in-part of application Ser. No. 09 / 618,352, now U.S. Pat. No. 6,551,337, filed Jul. 19, 2000, which claims priority from Provisional Application No. 60 / 157,824, filed Oct. 5, 1999, and Provisional Application No. 60 / 178,901, filed Jan. 28, 2000, the entirety of all these applications are hereby incorporated by reference.FIELD OF THE INVENTION [0002] The invention relates to a method and an apparatus for removing plaque, including fatty deposits and other occlusions from blood vessels. More particularly, the invention relates to a method and apparatus for ablating plaque from the carotid artery by utilizing ultrasonic energy. BACKGROUND OF THE INVENTION [0003] A blockage of a blood vessel is the most frequent cause of stroke and is responsible for abou...

Claims

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Application Information

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Patent Type & Authority Applications(United States)
IPC IPC(8): A61B17/00A61B17/22A61B17/28A61B17/32A61B17/50A61B18/00A61M1/00A61N7/02
CPCA61B17/00234A61N2007/0008A61B17/320068A61B2017/00137A61B2017/00274A61B2017/22002A61B2017/22007A61B2017/22008A61B2017/22015A61B2017/22018A61B2017/22051A61B2017/293A61B2017/320084A61B2018/00547A61B2018/00982A61B2217/005A61B2217/007A61N7/022A61B17/22012A61B2017/320073
Inventor RABINER, ROBERT A.HARE, BRAD A.
Owner CYBERSONICS
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