US3769981A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Urinary catheter
Assignee: Kendall Co
•
Filing: 1972-02-09
•
Granted: 1973-11-06
•
Expires: 1992-02-09
Abstract
Abstract Catheters have proximal and distal tubular ends joined by a preferably flexible connecting portion of reduced diameter so that liquid draining through the catheter can wash the walls of the urethra. Rigidifying aids to the insertion of the catheter when flexible are described.
Inventors
- 👤 Whorter D Mc
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 11:32
CPC Classifications
A; A61; A61M; A61M25/00; A61M25/0017
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
146 words
A urinary catheter having at its distal end a tube having a bore forming a drainage channel a drainage eye leading to said drainage channel; an expansible and collapsible member surrounding the distal end of said tube and operating as a device for retaining said catheter against inadvertent ejection from placement with its said eye located within a urinary bladder; the proximal end of said catheter including a tube having a bore forming a drainage channel; the bores of said distal and said proximal tubes ending in spaced relation and a connecting member of reduced cross section relative to said tubes joining said tubes, whereby the distal tube may lie extending through the sphincteral muscle to drain urine past said muscle into contact with the walls of the uretha surrounding said connecting portion and thence into the proximal end tube for elimination from the urethra therethrough.
Claim 2
Dependent Claim
146 words
A urinary catheter having at its distal end a tube having a bore forming a drainage channel a drainage eye leading to said drainage channel; an expansible and collapsible member surrounding the distal end of said tube and operating as a device for retaining said catheter against inadvertent ejection from placement with its said eye located within a urinary bladder; the proximal end of said catheter including a tube having a bore forming a drainage channel; the bores of said distal and said proximal tubes ending in spaced relation and a connecting member of reduced cross section relative to said tubes joining said tubes, whereby the distal tube may lie extending through the sphincteral muscle to drain urine past said muscle into contact with the walls of the uretha surrounding said connecting portion and thence into the proximal end tube for elimination from the urethra therethrough.
Claim 3
Dependent Claim
104 words
A catheter as claimed in claim 1 having an elongated hollow member extending parallel to said connecting member and having its distal end extending into the bore of said distal tube and its proximal end extending through and out of the bore of said proximal tube, whereby urine can drain through said hollow member to the exterior as an indicator as to when the catheter has entered the bladder, said elongated member being removable by withdrawal out of said tubes after said catheter has been inserted into a bladder with the aid of the stiffening imparted by said hollow elongated member to said catheter.
Claim 4
Dependent Claim
89 words
A catheter as claimed in claim 1 wherein the connecting member is flexible and said catheter has inflatable means extending along said connecting member for temporarily increasing the cross-sectional area of at least portions of said connecting member and reducing its flexibility for the purpose of inserting said catheter more readily through a urethra and means connecting said inflatable means with the proximal end of said catheter to permit said inflatable means to be deflated while maintaining said retention expansible member expanded to retain the catheter in indwelling position.
Claim 5
Dependent Claim
20 words
A catheter as claimed in claim 3 wherein said inflatable means lies wholly on one side of said connecting member.
Claim 6
Dependent Claim
26 words
A catheter as claimed in claim 3 wherein the inflating means includes a pair of inflatable members lying one on each side of said connecting member.
Claim 7
Dependent Claim
20 words
A catheter as claimed in claim 3 wherein said inflatable means includes a collapsible wall coaxially surrounding said connecting member.
Claim 8
Dependent Claim
27 words
A catheter as claimed in claim 3 having a side arm at its proximal end containing a lumen communicating through the connecting member with said inflatable means.
Claim 9
Dependent Claim
30 words
A catheter as claimed in claim 5 having two side arms at its proximal end, each containing a lumen communicating through the connecting member with one of said inflatable members.
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) | 1976-11-05 | 1977-05-07 | 1977-11-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-11-05 | 1981-05-07 | 1981-11-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-11-05 | 1985-05-07 | 1985-11-06 | $7700.00 | Window Closed / Lapsed |