US3664344A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Tyned cryosurgical probe
Assignee: Brymill Corp
•
Filing: 1970-09-15
•
Granted: 1972-05-23
•
Expires: 1990-09-15
Abstract
Abstract Freezing of large tissue masses to significant depths is achieved by utilizing a tyned cryosurgical probe having sharpened tynes that are embedded directly into the tissue to be frozen. Nitrogen is delivered in substantially liquid form directly to the exposed ends of the tynes or to metallic surfaces metallurgically bonded thereto. Examples of uses include starting a deep iceball with a tyned probe in accordance herewith and advancing the iceball deeper with other apparatus.
Inventors
- 👤 Michael D Bryne
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 12:43
CPC Classifications
A; A61; A61B; A61B18/00; A61B18/02
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
99 words
In cryosurgery, the method of freezing a mass of soft, living tissue comprising the steps of: inserting into a mass of soft, living tissue to be frozen a plurality of closely spaced sharp metal tynes which are metallurgically bonded to the outside surface of a metallic wall of a chamber; and thereafter directing a sufficient flow of liquefied gas cryogenic fluid having a boiling point below -100* C. to the inner surface of the metallic wall of said chamber to which said tynes are metallurgically bonded to solidly freeze the entire portion of said mass included between said tynes.
Claim 2
Dependent Claim
99 words
In cryosurgery, the method of freezing a mass of soft, living tissue comprising the steps of: inserting into a mass of soft, living tissue to be frozen a plurality of closely spaced sharp metal tynes which are metallurgically bonded to the outside surface of a metallic wall of a chamber; and thereafter directing a sufficient flow of liquefied gas cryogenic fluid having a boiling point below -100* C. to the inner surface of the metallic wall of said chamber to which said tynes are metallurgically bonded to solidly freeze the entire portion of said mass included between said tynes.
Claim 3
Dependent Claim
166 words
A cryosurgical instrument for destroying living animal tissue by the rapid, active cooling of heat conducting tynes embedded in said tissue, comprising: a chamber formed of walls and having a proximal end adapted to receive a cryogenic fluid and a distal end closed by a thermally conductive metallic end wall; a plurality of closely spaced sharp metal tynes adapted to be inserted into living animal tissue which is to be destroyed, said tynes being metallurgically bonded to said end wall of said chamber and oriented outwardly therefrom; and cryogenic fluid delivery means connected to said chamber and including a reservoir adapted to receive a liquefied gas cryogenic fluid having a boiling point below -100* C., for delivering, with said cryogenic fluid in said reservoir, a sufficient flow of said cryogenic fluid to said proximal end of said chamber, when said chamber is in position with said tynes inserted into the tissue, so as to solidly freeze the entire portion of the tissue included between said tynes.
Claim 4
Dependent Claim
166 words
A cryosurgical instrument for destroying living animal tissue by the rapid, active cooling of heat conducting tynes embedded in said tissue, comprising: a chamber formed of walls and having a proximal end adapted to receive a cryogenic fluid and a distal end closed by a thermally conductive metallic end wall; a plurality of closely spaced sharp metal tynes adapted to be inserted into living animal tissue which is to be destroyed, said tynes being metallurgically bonded to said end wall of said chamber and oriented outwardly therefrom; and cryogenic fluid delivery means connected to said chamber and including a reservoir adapted to receive a liquefied gas cryogenic fluid having a boiling point below -100* C., for delivering, with said cryogenic fluid in said reservoir, a sufficient flow of said cryogenic fluid to said proximal end of said chamber, when said chamber is in position with said tynes inserted into the tissue, so as to solidly freeze the entire portion of the tissue included between said tynes.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-05-23 | 1975-11-22 | 1976-05-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-05-23 | 1979-11-22 | 1980-05-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-05-23 | 1983-11-22 | 1984-05-23 | $7700.00 | Window Closed / Lapsed |