US3612474A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Flow control device for flexible tubes
Assignee: Abbott Laboratories
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Filing: 1969-05-09
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Granted: 1971-10-12
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Expires: 1989-05-09
Abstract
Abstract A flow control device for flexible tubing to control and regulate the rate of flow of fluid through the tubing and comprising at least a pair of movable jaws engageable with the tubing and affixed to one member and a second member engageable with the jaws and movable along the longitudinal axis of the first member to thereby move the jaws into and out of engagement with the tubing when the second member is moved along the axis of the first member. The flow control device is particularly useful in administering liquids for intravenous feeding and other medical purposes.
Inventors
- 👤 Clair Laffayette Strohl Jr
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 19:15
CPC Classifications
A; A61; A61M; A61M39/00; A61M39/22; A61M39/28; A61M39/284; Y; Y10; Y10T; Y10T403/00; Y10T403/53; Y10T403/535
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
178 words
A flow control device for regulating the flow of fluid through a flexible tube and comprising: an elongated tubular member having a bore therethrough of greater diameter than the flexible tube, at least a pair of opposing jaws formed integrally with and extending from one end of the tubular member, and arranged for lateral movement relative to the axis of said tube, said opposing jaws having the configuration of a hammer and anvil, respectively, the angular relationship between the faces of the hammer or corresponding anvil being about 120* or less, said faces being positioned parallel to the longitudinal axis of the flexible tube, a collet having a tapered internal surface with threads formed therein engageable with corresponding threads formed in the jaws in their faces away from the tube engaging portions, the collet being rotatable when the threads are in engagement to move the collet along the longitudinal axis of the flow control device to thereby move the jaws into and out of engagement with the flexible tube to regulate the flow of fluid through the tube.
Claim 2
Dependent Claim
178 words
A flow control device for regulating the flow of fluid through a flexible tube and comprising: an elongated tubular member having a bore therethrough of greater diameter than the flexible tube, at least a pair of opposing jaws formed integrally with and extending from one end of the tubular member, and arranged for lateral movement relative to the axis of said tube, said opposing jaws having the configuration of a hammer and anvil, respectively, the angular relationship between the faces of the hammer or corresponding anvil being about 120* or less, said faces being positioned parallel to the longitudinal axis of the flexible tube, a collet having a tapered internal surface with threads formed therein engageable with corresponding threads formed in the jaws in their faces away from the tube engaging portions, the collet being rotatable when the threads are in engagement to move the collet along the longitudinal axis of the flow control device to thereby move the jaws into and out of engagement with the flexible tube to regulate the flow of fluid through the tube.
Claim 3
Dependent Claim
25 words
The flow control device of claim 1 which includes a slot formed in the wall of the tubular member for rapid shutoff of fluid flow.
Claim 4
Dependent Claim
22 words
The flow control device of claim 1 in which said opposing jaws are attached to the tubular member by means of hinges.
Claim 5
Dependent Claim
62 words
The flow control device of claim 1 in which a tubular boss extends from one end of the tubular element through which the tubing is inserted to position the tubing properly between said jaws and in which oblique shoulders are formed internally in the end of the tubular element adjacent to the boss to assist in guiding the tubing through said element.
Claim 6
Dependent Claim
163 words
A flow control device for regulating the flow of fluid through a flexible tube and comprising: an elongated tubular member having a bore therethrough of greater diameter than the flexible tube, at least a pair of opposing jaws formed integrally with and extending from one end of the tubular member and arranged for lateral movement relative to the axis of said tube, said jaws having faces, the angular relationship of which is about 120* or less, said faces being positioned parallel to the longitudinal axis of the flexible tube, a collet having a tapered internal surface with threads formed therein engageable with corresponding threads formed in the jaws in their faces away from the tube engaging portions, the collet being rotatable when the threads are in engagement to move the collet along the longitudinal axis of the flow control device to thereby move the jaws into and out of engagement with the flexible tube to regulate the flow of fluid through the tube.
Claim 7
Dependent Claim
163 words
A flow control device for regulating the flow of fluid through a flexible tube and comprising: an elongated tubular member having a bore therethrough of greater diameter than the flexible tube, at least a pair of opposing jaws formed integrally with and extending from one end of the tubular member and arranged for lateral movement relative to the axis of said tube, said jaws having faces, the angular relationship of which is about 120* or less, said faces being positioned parallel to the longitudinal axis of the flexible tube, a collet having a tapered internal surface with threads formed therein engageable with corresponding threads formed in the jaws in their faces away from the tube engaging portions, the collet being rotatable when the threads are in engagement to move the collet along the longitudinal axis of the flow control device to thereby move the jaws into and out of engagement with the flexible tube to regulate the flow of fluid through the tube.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-10-11 | 1975-04-12 | 1975-10-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-10-11 | 1979-04-12 | 1979-10-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-10-11 | 1983-04-12 | 1983-10-12 | $7700.00 | Window Closed / Lapsed |