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US 11,439,452 B2Granted
Systems and methods to treat wounds
AssigneesCSA Medical, Inc., United States Endoscopy Group, Inc.
InventorJohn P. O'Connor
Life of this patent
Estimating the term…
Abstract
The present disclosure relates generally to the field of cryoablation. In particular, the present disclosure relates to devices and methods for application of cryospray as a therapy to treat wounds.
Claims20
A method of treating a wound comprising:
- directing a distal tip of a cryospray catheter toward the wound;
- orienting the distal tip of the catheter at an angle relative to a surface of the wound;
- supplying cryogen to the distal tip of the catheter;
- and
- spraying cryogen from the distal tip onto a tissue region of the wound at a distance from the wound, at a temperature of the cryogen, and for a duration of spraying, which are sufficient for effective treatment of the tissue region, until a temperature of an approximate square surface of the tissue region of the wound, about 2 cm long by about 2 cm wide, is about −20° C. to a depth from the surface of the wound,
- wherein the duration is between about 20 seconds and about 60 seconds,
- wherein the depth is more than 0.5 mm and up to about 1 mm.
4 more elements
A method of treating a wound comprising:
- directing a distal tip of a cryospray catheter toward a wound;
- orienting the distal tip of the catheter at an angle relative to at least one surface layer of the wound;
- and
- spraying cryogen from the distal tip onto the at least one surface layer of the wound at a distance from the wound, at a temperature of the cryogen, and for a duration of spraying, which are sufficient for effective treatment of the at least one surface layer at a tissue temperature of about −20° C. up to a depth from a surface of the wound,
- wherein the duration is between about 20 seconds and about 60 seconds,
- wherein the depth is more than 0.5 mm and up to about 1 mm.
3 more elements
A method of treating a wound comprising:
- inserting a cryospray catheter within a body lumen;
- orienting a distal tip of the catheter at an angle relative to a region of exposed tissue of a wound within the body lumen;
- supplying cryogen to the distal tip of the catheter;
- and
- spraying cryogen from the distal tip onto the exposed tissue region of the wound at a distance from the wound, at a temperature of the cryogen, and for a duration of spraying, which are sufficient for effective treatment of the tissue region, until a temperature of an approximate square surface of the tissue region of the wound, about 2 cm long by about 2 cm wide, is about −20° C. to a depth from a surface of the wound,
- wherein the duration is between about 20 seconds and about 60 seconds,
- wherein the depth is more than 0.5 mm and up to about 1 mm.
4 more elements
Dependencies are inferred from the claim text.