US2013096593A1PendingUtilityA1

System and method for energy delivery to tissue while monitoring position, lesion depth, and wall motion

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Individually held — no corporate assignee on recordPriority: Oct 30, 2008Filed: Sep 28, 2012Published: Apr 18, 2013
Est. expiryOct 30, 2028(~2.3 yrs left)· nominal 20-yr term from priority
Inventors:Hira V. ThapliyalDavid A. GallupJames W. Arenson
A61B 8/12A61N 2007/0073A61B 2018/00029A61B 2018/00642A61N 7/022A61B 2090/061A61N 2007/0052A61N 2007/0078A61N 7/00A61B 2017/00084A61B 2017/00092A61B 2017/00106
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Claims

Abstract

Systems and methods for ablating tissue include an ablation device having an energy source and a sensor. The energy source provides a beam of energy directable to target tissue, and the sensor senses energy reflected back from the target tissue. The sensor collects various information from the target tissue in order to facilitate adjustment of ablation operating parameters, such as changing power or position of the energy beam. Gap distance between the energy source and target tissue, energy beam incident angle, tissue motion, tissue type, lesion depth, etc. are examples of some of the information that may be collected during the ablation process and used to help control ablation of the tissue.

Claims

exact text as granted — not AI-modified
What is claimed is: 
     
         1 . A method for ablating tissue, said method comprising:
 providing an elongate shaft having an ultrasound transducer and a sensor adjacent a distal portion of the elongate shaft, the ultrasound transducer providing a beam of ultrasound energy;   positioning the ultrasound transducer adjacent target tissue for treatment;   sensing the target tissue with the sensor thereby determining characteristics of the target tissue;   ablating the target tissue with the beam of ultrasound energy thereby forming a continuous lesion in the target tissue; and   adjusting the ablating based on the sensed characteristics of the target tissue.   
     
     
         2 . The method of  claim 1 , wherein the sensing is conducted before the ablating. 
     
     
         3 . The method of  claim 1 , wherein the sensing is conducted while the ablating is performed. 
     
     
         4 . The method of  claim 1 , wherein the adjusting comprises adjusting power of the beam of ultrasound. 
     
     
         5 . The method of  claim 1 , wherein the adjusting comprises repositioning the ultrasound transducer relative to the target tissue. 
     
     
         6 . The method of  claim 5 , wherein the repositioning comprises rotating or translating the ultrasound transducer relative to the target tissue. 
     
     
         7 . The method of  claim 1 , wherein the sensor and the ultrasound transducer are the same ultrasound transducer. 
     
     
         8 . The method of  claim 1 , wherein the beam of energy is a collimated beam of energy. 
     
     
         9 . The method of  claim 1 , wherein the sensing comprises determining distance between the ultrasound transducer and the target tissue. 
     
     
         10 . The method of  claim 1 , wherein the sensing comprises determining thickness of the target tissue. 
     
     
         11 . The method of  claim 1 , wherein the sensing comprises determining properties of the target tissue after ablation thereof. 
     
     
         12 . The method of  claim 1 , wherein the sensing comprises determining lesion depth. 
     
     
         13 . The method of  claim 1 , wherein the sensing comprises determining lesion formation.

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