US3713447A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Suprapubic shunt
Assignee: Individual
•
Filing: 1971-08-16
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Granted: 1973-01-30
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Expires: 1991-08-16
Abstract
Abstract Retention catheter of the expandable wing type, of particular utility as a suprapubic shunt, adapted to be inserted into the bladder through an incision in the lower abdominal wall, characterized by: A. A TROCHAR TUBE HAVING A SLIDABLE STYLET THEREIN WITH A POINTED INNER OR DISTAL END FOR FACILITATING INSERTION THROUGH THE INCISION AND THEREAFTER ADAPTED TO BE RETRACTED INTO THE TUBE TO PREVENT CONTACT WITH AND POSSIBLE DAMAGE TO THE BLADDER, B. RESILIENT WINGS ADJACENT THE DISTAL END, NORMALLY URGED TO EXPANDED POSITION AND ADAPTED TO BE COLLAPSED WHEN THE POINTED STYLET END IS EXTENDED BEYOND THE TROCHAR TUBE, C. A SLIDABLE BUTTON OR FINGER OPERATED MEMBER CARRIED BY THE TROCHAR TUBE FOR MOVING THE STYLET AND ALSO FOR ROTATING A VALVE, COMMUNICATING THE EYE OR OPENING IN THE DISTAL END WITH A CANNULA OR TUBE.
Inventors
- 👤 E Adair
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 15:59
CPC Classifications
A; A61; A61M; A61M25/00; A61M25/01; A61M25/02; A61M25/04; A61M25/06; A61B; A61B17/00; A61B17/34; A61B2017/348; A61B2017/3482; A61B2017/3484
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
203 words
A suprapubic shunt, comprising; a. an elongated partially flexible trochar tube having a bore extending from its rear or proximate end to its front or distal end, b. a plurality of angularly spaced elongated slots in the wall of the tube near its distal end, forming expandible wings therebetween, c. a stylet slidably disposed within the trochar tube having a converging distal tip, such as conical, said tip being movable from a position within the distal end of the trochar tube to a position extending beyond its distal end, and d. radial extending means carried by the stylet for engaging the trochar tube at a position adjacent the distal ends of said slots for moving said wings to collapsed position, e. the construction and arrangement being such that when said wings are collapsed adjacent the stylet said tip is extended beyond the distal end of the trochar tube, the tip aiding in inserting the trochar tube through an incision, such as an incision through an abdominal wall and into a bladder, and the tip, when retracted being enclosed within the trochar tube preventing its contact with and damage to an organ within which it is disposed, and positioning the wings in extended position.
Claim 2
Dependent Claim
203 words
A suprapubic shunt, comprising; a. an elongated partially flexible trochar tube having a bore extending from its rear or proximate end to its front or distal end, b. a plurality of angularly spaced elongated slots in the wall of the tube near its distal end, forming expandible wings therebetween, c. a stylet slidably disposed within the trochar tube having a converging distal tip, such as conical, said tip being movable from a position within the distal end of the trochar tube to a position extending beyond its distal end, and d. radial extending means carried by the stylet for engaging the trochar tube at a position adjacent the distal ends of said slots for moving said wings to collapsed position, e. the construction and arrangement being such that when said wings are collapsed adjacent the stylet said tip is extended beyond the distal end of the trochar tube, the tip aiding in inserting the trochar tube through an incision, such as an incision through an abdominal wall and into a bladder, and the tip, when retracted being enclosed within the trochar tube preventing its contact with and damage to an organ within which it is disposed, and positioning the wings in extended position.
Claim 3
Dependent Claim
203 words
A suprapubic shunt, comprising; a. an elongated partially flexible trochar tube having a bore extending from its rear or proximate end to its front or distal end, b. a plurality of angularly spaced elongated slots in the wall of the tube near its distal end, forming expandible wings therebetween, c. a stylet slidably disposed within the trochar tube having a converging distal tip, such as conical, said tip being movable from a position within the distal end of the trochar tube to a position extending beyond its distal end, and d. radial extending means carried by the stylet for engaging the trochar tube at a position adjacent the distal ends of said slots for moving said wings to collapsed position, e. the construction and arrangement being such that when said wings are collapsed adjacent the stylet said tip is extended beyond the distal end of the trochar tube, the tip aiding in inserting the trochar tube through an incision, such as an incision through an abdominal wall and into a bladder, and the tip, when retracted being enclosed within the trochar tube preventing its contact with and damage to an organ within which it is disposed, and positioning the wings in extended position.
Claim 4
Dependent Claim
203 words
A suprapubic shunt, comprising; a. an elongated partially flexible trochar tube having a bore extending from its rear or proximate end to its front or distal end, b. a plurality of angularly spaced elongated slots in the wall of the tube near its distal end, forming expandible wings therebetween, c. a stylet slidably disposed within the trochar tube having a converging distal tip, such as conical, said tip being movable from a position within the distal end of the trochar tube to a position extending beyond its distal end, and d. radial extending means carried by the stylet for engaging the trochar tube at a position adjacent the distal ends of said slots for moving said wings to collapsed position, e. the construction and arrangement being such that when said wings are collapsed adjacent the stylet said tip is extended beyond the distal end of the trochar tube, the tip aiding in inserting the trochar tube through an incision, such as an incision through an abdominal wall and into a bladder, and the tip, when retracted being enclosed within the trochar tube preventing its contact with and damage to an organ within which it is disposed, and positioning the wings in extended position.
Claim 5
Dependent Claim
19 words
A device in accordance with claim 1 wherein the distal ends of said slots provide abutments for said means.
Claim 6
Dependent Claim
23 words
A device in accordance with claim 1 including means for resiliently urging said wings toward their expanded positions to provide fluid entrance openings.
Claim 7
Dependent Claim
56 words
A device in accordance with claim 1 including an operating member secured to the proximate end of the stylet and slidable and rotatable within the trochar tube, said member having a rotary valve member carried thereby for opening and closing communication of the bore of the trochar tube with a conduit secured to the trochar tube.
Claim 8
Dependent Claim
53 words
A device in accordance with claim 4 including locking means for preventing movement of the stylet when said tip is disposed within the distal end of the trochar tube, and manual means to permit movement of the stylet to collapse said wings when it is desired to remove the device through the incision.
Claim 9
Dependent Claim
26 words
A device in accordance with claim 5 wherein the locking means, the operating member, and the valve member are integrally formed of injection moulded plastic material.
Claim 10
Dependent Claim
46 words
A device in accordance with claim 6 wherein the locking means is a radially movable spring having an end adapted to abut the proximate end of the trochar tube, the spring, when depressed radially inwardly, permitting the operating member to move axially within the trochar tube.
Claim 11
Dependent Claim
38 words
A device in accordance with claim 7 including an O-ring carried by the operating member engageable with a bore in the trochar tube and means adjacent thereto for providing said trochar tube with a selective fluid discharge means.
Claim 12
Dependent Claim
49 words
A device in accordance with claim 8 wherein the trochar tube and its wings are integrally formed of injection moulded material and the stylet is formed as an integral member, the device thus comprising four parts consisting of: the trochar tube, the stylet, the operating member, and the O-ring.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-01-30 | 1976-07-31 | 1977-01-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-01-30 | 1980-07-31 | 1981-01-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-01-30 | 1984-07-31 | 1985-01-30 | $7700.00 | Window Closed / Lapsed |