US3570531A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Tube pincher for intravenous administration
Assignee: Individual
•
Filing: 1969-08-22
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Granted: 1971-03-16
•
Expires: 1989-08-22
Abstract
Abstract A pincher for flexible tubing in an intravenous administration set has a pinching element slidably disposed between two tubing holders receiving and grasping the flexible tubing. Transverse movement of the pinching element over the flexible tubing pinches the tubing to effectuate therein a circular orifice of desired size as a function of flow therethrough. The apparatus also includes calibrated scales for setting the tube pincher at the prescribed drip rate.
Inventors
- 👤 John B Mcgay
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 20:47
CPC Classifications
A; A61; A61M; A61M39/00; A61M39/22; A61M39/28; A61M39/286; Y; Y10; Y10T; Y10T137/00; Y10T137/8158; Y10T137/8225; Y10T137/8275
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
97 words
An apparatus for the controlled intravenous feeding of drops of fluid through flexible circular tubing comprising: juxtaposed tubing receivers for capturing and tenaciously retaining said tubing; a slidable pinching element interposed between said tubing receivers and having therein an elongated open-ended slot of width less than the outer diameter of said tubing; and means for causing sliding movement of said pinching element relative to said tubing receivers whereby said tubing is transversed by said open-ended slot and is simultaneously pinched to effectuate therein a substantially circular orifice of adjustable diameter to control the magnitude of flow therethrough.
Claim 2
Independent Claim
97 words
An apparatus for the controlled intravenous feeding of drops of fluid through flexible circular tubing comprising: juxtaposed tubing receivers for capturing and tenaciously retaining said tubing; a slidable pinching element interposed between said tubing receivers and having therein an elongated open-ended slot of width less than the outer diameter of said tubing; and means for causing sliding movement of said pinching element relative to said tubing receivers whereby said tubing is transversed by said open-ended slot and is simultaneously pinched to effectuate therein a substantially circular orifice of adjustable diameter to control the magnitude of flow therethrough.
Claim 3
Dependent Claim
80 words
An apparatus as in claim 1 wherein said tubing receivers are composed of jaws pivotal about a common axis and having confronting faces and means for contiguously securing said faces, each of said faces containing a coaxial transverse semicircular notch to cooperatively receive and hold said flexible tubing; each of said notches being intersected by a longitudinal groove extending downwardly in an upper edge of said faces, said grooves being in registered alignment to slidingly receive therewithin said pinching element.
Claim 4
Dependent Claim
20 words
An apparatus as in claim 2 wherein said jaws are pivotally carried on a case having a concentric aperture therethrough.
Claim 5
Dependent Claim
139 words
An apparatus as in claim 3 wherein: said pinch element comprises: two symmetrical axially aligned blades pivotal about a common point, one each received in said longitudinal groove in each of said faces of said jaws, said blades having inner edges shaped to cooperate to provide a wide slot and a pinch slot in mutual communication, when said jaws are secured together; and said means for causing vertical movement of said pinch element comprises: a shaft assembly rotatably journaled through said aperture in said case and having at the lower end thereof an elongated borehole containing female threads; a stud having one end rigidly affixed to said pinch element adjacent the point of pivotation; the opposite end threadably engaged in said borehole of said shaft; and means on the upper end of said shaft to facilitate the rotation thereof.
Claim 6
Dependent Claim
24 words
An apparatus as in claim 4 wherein said means for facilitating rotation of said shaft comprises a knob affixed to the upper end thereof.
Claim 7
Dependent Claim
56 words
An apparatus as in claim 5 including: a circular scale concentrically journaled over said shaft assembly intermediate said case and said knob and in frictional contact therewith; said scale having indicia calibrated around the periphery therEof in quantity of liquid flow per time division; and a pointer secured to said case and extending over said indicia.
Claim 8
Dependent Claim
53 words
An apparatus as in claim 5 including: a stopwatch affixed to case, said stopwatch having a timing mechanism and a dial calibrated in quantity of flow of fluid per time division; means thereon for winding said timing mechanism and setting said dial; and means thereon for engaging and disengaging the timing mechanism thereof.
References Cited (Backward Citations)
US2503327A
Cited
US2715905A
Cited
US2805552A
Cited
US2889848A
Cited
US3369562A
Cited
US3332439A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-03-15 | 1974-09-14 | 1975-03-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-03-15 | 1978-09-14 | 1979-03-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-03-15 | 1982-09-14 | 1983-03-16 | $7700.00 | Window Closed / Lapsed |