US3704711A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Catheter
Assignee: Individual
•
Filing: 1971-06-30
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Granted: 1972-12-05
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Expires: 1991-06-30
Abstract
Abstract A catheter for the creation of an atrial septal defect without thoracotomy. The catheter comprises a main flexible tubular housing and a branch tubular housing. A flexible guide wire extends through the main housing and is secured at the distal end thereof and extends outwardly of the distal end. The guide wire can be deformed into a dome shape protruding from a slit opening in the distal end of the main housing by advancing the guide wire from the proximal end of the main housing. A tiny surgical blade disposed in the slit opening of the main housing is elevated to a desired angle by advancing a flexible control wire pivoted to the blade and extending through the main housing. The branch tubular housing communicates with the main housing and is adapted for connecting a syringe or pressure gauge. A pair of rubber stoppers are provided on the main housing.
Inventors
- 👤 Sang C Park
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 00:38
CPC Classifications
A; A61; A61M; A61M29/00; A61M29/02; A61B; A61B17/00; A61B17/32; A61B17/320016; A61M25/00; A61M25/01; A61M25/09; A61B17/00234; A61B2017/00238; A61B2017/00243; A61B17/22; A61B2017/22097
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
265 words
A catheter for the creation of an atrial septal defect without thoracotomy, comprising, in combination, a main tubular housing of flexible material having an open end and a closed end tip formed with an elongated slit open portion, a flexible guide wire displaceable longitudinally in said main tubular housing, one end of said guide wire extending outwardly through said open end, the other end of said guide wire being secured in said closed end tip and extending outwardly thereof, said other end of the guide wire having a distal part lying within said open slit portion and being deformable into a dome-shaped protrusion upon advancing said guide wire in the direction of said closed end tip, a flexible control wire displaceable axially of said main housing and having a proximal outwardly extending end, a blade having one end pivoted to the distal end of said control wire, link means pivoted to tHe other end of said blade and to said closed end tip, said blade and said link means being normally disposed in said slit open end and deformable into V-shape upon advancing the control wire in the direction of the closed end tip, a branch tubular housing communicating with said main housing and having a free end adapted for connecting a syringe or pressure gauge, first and second stoppers of resilient material secured, respectively, about the main housing forwardly and posteriorly of said branch housing for applying hemostats to prevent fluid leakage, pressure and back flow of blood during the initial introduction of the catheter into the vessels and cardiac chamber of a patient.
Claim 2
Dependent Claim
265 words
A catheter for the creation of an atrial septal defect without thoracotomy, comprising, in combination, a main tubular housing of flexible material having an open end and a closed end tip formed with an elongated slit open portion, a flexible guide wire displaceable longitudinally in said main tubular housing, one end of said guide wire extending outwardly through said open end, the other end of said guide wire being secured in said closed end tip and extending outwardly thereof, said other end of the guide wire having a distal part lying within said open slit portion and being deformable into a dome-shaped protrusion upon advancing said guide wire in the direction of said closed end tip, a flexible control wire displaceable axially of said main housing and having a proximal outwardly extending end, a blade having one end pivoted to the distal end of said control wire, link means pivoted to tHe other end of said blade and to said closed end tip, said blade and said link means being normally disposed in said slit open end and deformable into V-shape upon advancing the control wire in the direction of the closed end tip, a branch tubular housing communicating with said main housing and having a free end adapted for connecting a syringe or pressure gauge, first and second stoppers of resilient material secured, respectively, about the main housing forwardly and posteriorly of said branch housing for applying hemostats to prevent fluid leakage, pressure and back flow of blood during the initial introduction of the catheter into the vessels and cardiac chamber of a patient.
Claim 3
Dependent Claim
38 words
A catheter as claimed in claim 1, wherein said guide wire consists of a fine coiled spring wire, and a flexible solid wire secured in said coiled spring wire inwardly of the proximal part of said guide wire.
Claim 4
Dependent Claim
26 words
A catheter as claimed in claim 2, wherein the one end of said guide wire extending from said flexible tubular housing terminates as a ring-shaped handle.
Claim 5
Dependent Claim
29 words
A catheter as claimed in claim 3, wherein the proximal outwardly extending end of said control wire terminates as a triangular-shaped handle, for easy identification of the control wire.
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) | 1975-12-05 | 1976-06-05 | 1976-12-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-12-05 | 1980-06-05 | 1980-12-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-12-05 | 1984-06-05 | 1984-12-05 | $7700.00 | Window Closed / Lapsed |