Patent US3595239A successfully refreshed from Google Patents.
US3595239A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Catheter with electrical cutting means
Assignee: Individual
•
Filing: 1969-04-04
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Granted: 1971-07-27
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Expires: 1989-04-04
Abstract
Abstract A catheter with a flexible catheter tube having an eyelet or ring at the distal end thereof. An obturator in the form of an electrode is removably disposed within the catheter tube and has a tip thereof projecting out of the catheter tube. The ring of the catheter tube limits the extent of the projection of the obturator tip from the catheter tube. A conventional electrosurgical apparatus is connected to the obturator-electrode for producing electrical energy to divide or cut tissue of a body so as to form a passageway through which the catheter tube advances.
Inventors
- 👤 Roy A Petersen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 03:31
CPC Classifications
A; A61; A61B; A61B18/00; A61B18/04; A61B18/12; A61B18/14; A61B18/1492; A61M; A61M25/00; A61M25/01; A61M25/06; A61B18/148
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
81 words
A catheter comprising a catheter tube of electrical insulating material with a distal end, and an electrical conductor member disposed in said catheter tube with a tip at one end thereof located at the distal end of said catheter tube and with means spaced from said tip for establishing an electrical connection, said electrical conductor member being a rod disposed axially in said catheter tube and being removable therefrom, said tip projects out of the distal end of said catheter tube.
Claim 2
Dependent Claim
81 words
A catheter comprising a catheter tube of electrical insulating material with a distal end, and an electrical conductor member disposed in said catheter tube with a tip at one end thereof located at the distal end of said catheter tube and with means spaced from said tip for establishing an electrical connection, said electrical conductor member being a rod disposed axially in said catheter tube and being removable therefrom, said tip projects out of the distal end of said catheter tube.
Claim 3
Dependent Claim
31 words
A catheter as claimed in claim 1 wherein said catheter tube includes an annular member disposed at the distal end of said catheter tube for receiving said tip of said rod.
Claim 4
Dependent Claim
136 words
A catheter comprising a catheter tube of electrical insulating material with a distal end, and an electrical conductor member disposed in said catheter tube with a tip at one end thereof located at the distal end of said catheter tube and with means spaced from said tip for establishing an electrical connection, said electrical conductor being a rod disposed axially in said catheter tube and being removable therefrom, said tip projecting out of the distal end of said catheter tube, said catheter tube including an annular member disposed at the distal end of said catheter tube for receiving said tip of said rod, said rod being formed with a shoulder adjacent said tip for engaging said annular member to limit the extend at which said tip projects out of the distal end of said catheter tube.
Claim 5
Dependent Claim
136 words
A catheter comprising a catheter tube of electrical insulating material with a distal end, and an electrical conductor member disposed in said catheter tube with a tip at one end thereof located at the distal end of said catheter tube and with means spaced from said tip for establishing an electrical connection, said electrical conductor being a rod disposed axially in said catheter tube and being removable therefrom, said tip projecting out of the distal end of said catheter tube, said catheter tube including an annular member disposed at the distal end of said catheter tube for receiving said tip of said rod, said rod being formed with a shoulder adjacent said tip for engaging said annular member to limit the extend at which said tip projects out of the distal end of said catheter tube.
Claim 6
Dependent Claim
23 words
A catheter as claimed in claim 3 wherein an insulating sleeve is disposed on said rod adjacent to said shoulder and rearward thereof.
Claim 7
Dependent Claim
22 words
A catheter as claimed in claim 4 in which said catheter tube is formed with drainage openings at the distal end thereof.
Claim 8
Dependent Claim
14 words
A catheter as claimed in claim 5 in which said rod is an obturator.
Claim 9
Dependent Claim
17 words
A catheter as claimed in claim 6 in which said catheter tube is made of plastic material.
Claim 10
Dependent Claim
17 words
A catheter as claimed in claim 7 in which said tip is made of noncorrosive, electrical-conducting material.
Claim 11
Dependent Claim
19 words
A catheter as claimed in claim 8 in which said obturator has a body made of stainless steel wire.
Claim 12
Dependent Claim
27 words
A catheter as claimed in claim 9 in which said obturator includes another insulating sleeve disposed adjacent said electrical connection means and extending into said catheter tube.
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) | 1974-07-26 | 1975-01-25 | 1975-07-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-07-26 | 1979-01-25 | 1979-07-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-07-26 | 1983-01-25 | 1983-07-27 | $7700.00 | Window Closed / Lapsed |