DEVICES AND METHODS FOR ABLATING AND REMOVING A TISSUE MASS
First Claim
1. An electrosurgical device for incremental vaporization of a mass of tissue at a target site in the body of a patient, said device comprising:
- a. a proximal portion comprising a proximal control housing handle configured for connection to a power source;
b. a distal portion comprised of an outer assembly and an inner assembly;
c. wherein said outer assembly includes an elongate shaft having a an elongate lumen terminating in a distal opening and a distal tip that is sufficiently sharp to penetrate said target tissue and permit the positioning of said distal opening at said target site;
d. wherein said inner assembly comprises a proximal driver piece linked to at least one elongate active electrode connected to a power source;
e. wherein rotation of said proximal control housing about the longitudinal axis of said elongate shaft results in the passage of at least a distal portion of said active electrode through said distal opening and the radial projection of said distal portion into said mass of tissue.
1 Assignment
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Accused Products
Abstract
Disclosed herein are high efficiency surgical devices and methods of using same using radio frequency (RF) electrical power to destroy, vaporize and remove soft tissues, such as tumors, both malignant and benign, from within a target surgical site. In one particularly preferred embodiment, the electrosurgical device employs a combination of rotary and translational motion to incrementally vaporize a calculated volume of tissue. According to the principles of this invention, the electrosurgical devices can be used with externally supplied conductive or non-conductive irrigants, whether liquid, gas, or a combination thereof, as well as without externally supplied liquids, a mode of operation often referred to as “dry field” environment. The electrosurgical devices may further optionally include aspiration components to permit removal of vaporization by-products.
106 Citations
34 Claims
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1. An electrosurgical device for incremental vaporization of a mass of tissue at a target site in the body of a patient, said device comprising:
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a. a proximal portion comprising a proximal control housing handle configured for connection to a power source; b. a distal portion comprised of an outer assembly and an inner assembly; c. wherein said outer assembly includes an elongate shaft having a an elongate lumen terminating in a distal opening and a distal tip that is sufficiently sharp to penetrate said target tissue and permit the positioning of said distal opening at said target site; d. wherein said inner assembly comprises a proximal driver piece linked to at least one elongate active electrode connected to a power source; e. wherein rotation of said proximal control housing about the longitudinal axis of said elongate shaft results in the passage of at least a distal portion of said active electrode through said distal opening and the radial projection of said distal portion into said mass of tissue. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34)
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Specification