US3592192A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Intravenous catheter apparatus with catheter telescoped on outside of puncturing cannula
Assignee: American Hospital Supply Corp
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Filing: 1967-06-13
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Granted: 1971-07-13
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Expires: 1987-06-13
Abstract
Abstract An intravenous catheter assembly in which a separable gripping hub integrates a rigid cannula and flexible catheter for retaining them against relative movement during a venipuncture and permitting relative longitudinal movement after the flexible catheter has been in place and the cannula is to be withdrawn; the gripping hub including hinged jaws and a circumferential pressure band; a base plate and separate clamp parts; and a transverse clamp plate; the latter gripping heads including means for gripping a flexible protective sheath; the cannula being connected at its rear end to a flexible, withdrawing wire, and a protective rigid housing into which the cannula is withdrawable while the flexible sleeve protects against contamination of blood etc.
Inventors
- 👤 Andrew Harautuneian
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 18:48
CPC Classifications
A; A61; A61M; A61M25/00; A61M25/01; A61M25/06; A61M25/0606; A61M25/02; A61M2025/0246
Claims Analysis
Total Claims: 26
Claim 1
Independent Claim
128 words
Intravenous catheter apparatus comprising: a rigid puncturing cannula; a flexible catheter telescoped on an outside surface of said cannula; a removable hub circumposed about said catheter and including a separate, displacable mechanical griping means on said hub for urging the hub and catheter to a fixed relation to at least a portion of the cannula and circumferentially squeezing the catheter against the cannula to continuously prevent relative longitudinal movement therebetween, said hub having opposed separable gripping surfaces displacable from each other upon displacement of the mechanical gripping means and release of the circumferential squeezing by said mechanical gripping means to permit relative longitudinal separation of the catheter and cannula; and a flexible sheath attached to said hub for protecting the catheter portion which extends rearwardly beyond said hub.
Claim 2
Dependent Claim
128 words
Intravenous catheter apparatus comprising: a rigid puncturing cannula; a flexible catheter telescoped on an outside surface of said cannula; a removable hub circumposed about said catheter and including a separate, displacable mechanical griping means on said hub for urging the hub and catheter to a fixed relation to at least a portion of the cannula and circumferentially squeezing the catheter against the cannula to continuously prevent relative longitudinal movement therebetween, said hub having opposed separable gripping surfaces displacable from each other upon displacement of the mechanical gripping means and release of the circumferential squeezing by said mechanical gripping means to permit relative longitudinal separation of the catheter and cannula; and a flexible sheath attached to said hub for protecting the catheter portion which extends rearwardly beyond said hub.
Claim 3
Dependent Claim
28 words
Intravenous catheter apparatus as set forth in claim 1, wherein the hub includes a pair of hinged jaws having gripping surfaces in opposed longitudinal grooves in the jaws.
Claim 4
Dependent Claim
24 words
Intravenous catheter apparatus as set forth in claim 2, wherein the hub is of polypropylene and has an integral polypropylene hinge between the jaws.
Claim 5
Dependent Claim
92 words
Intravenous catheter apparatus as set forth in claim 1 wherein the hub includes a sheath-receiving portion which has an opening extending therethrough for passage of the catheter, said sheath-receiving portion having a bottom jaw of the hub rigidly attached thereto and said hub having a top jaw hingedly attached thereto on a transverse, chordally-disposed integral hinge portion, said top and bottom jaws having gripping surfaces in longitudinal opposed grooves in the jaws for transmitting said circumferential squeezing and integrating simultaneous movement of said cannula and catheter when a venipuncture is being made.
Claim 6
Dependent Claim
57 words
Intravenous catheter apparatus as set forth in claim 4 wherein said separate, removable, mechanical gripping means comprises a rigid band releasably surrounding the jaws and normally radially urging them in gripping relationship with said catheter, said rigid band being removable from the jaws so the jaws can swing open for removal of the hub from the catheter.
Claim 7
Dependent Claim
55 words
Intravenous catheter apparatus as set forth in claim 1 wherein the hub includes a base wall with upstanding arms on opposite sides of said catheter, a lid pivotally connected to these arms and adapted to swing longitudinally along the catheter toward said base wall to grip said catheter between said lid and said base wall.
Claim 8
Dependent Claim
56 words
Intravenous catheter apparatus as set forth in claim 6 wherein the base wall has a second set of upstanding arms on opposite sides of said catheter, and said means is a cam member removably connected to said second set of upstanding arms, said cam member forcing said lid to squeeze said catheter against said base wall.
Claim 9
Dependent Claim
21 words
Intravenous catheter apparatus as set forth in claim 6 wherein the flexible sheath is gripped between said lid and base wall.
Claim 10
Dependent Claim
33 words
Intravenous catheter apparatus as set forth in claim 8 wherein the flexible sheath is gripped on opposite sides of the catheter by a lug and cavity construction in the lid and base wall.
Claim 11
Dependent Claim
71 words
Intravenous catheter apparatus as set forth in claim 1 wherein the hub includes a base wall, a pair of upstanding arms on opposite sides of the catheter, a lid pivotally connected to one arm and adapted to swing transversely across said catheter and grip said catheter between the lid and said base Wall, and releasable catch means on the other arm to hold said lid in gripping relationship with said catheter.
Claim 12
Dependent Claim
21 words
Intravenous catheter apparatus as set forth in claim 10 wherein the flexible sheath is gripped between said lid and base wall.
Claim 13
Dependent Claim
33 words
Intravenous catheter apparatus as set forth in claim 11 wherein the flexible sheath is gripped on opposite sides of the catheter by a lug and cavity construction in the lid and base wall.
Claim 14
Dependent Claim
51 words
Intravenous catheter apparatus as set forth in claim 1 wherein the catheter is substantially longer than the cannula and wherein the apparatus has a flexible wire connected at one end to the cannula, which wire extends outwardly through a bore of the catheter for pulling the cannula out of the catheter.
Claim 15
Dependent Claim
18 words
Intravenous catheter apparatus as set forth in claim 1 wherein the flexible sheath is removable from the hub.
Claim 16
Dependent Claim
38 words
Intravenous catheter apparatus as set forth in claim 1 wherein the catheter has a hollow adapter on an end of the catheter within said flexible sheath, and wherein the apparatus includes a removable closure for said hollow adapter.
Claim 17
Dependent Claim
78 words
Intravenous catheter apparatus as set forth in claim 1 in which said catheter is substantially longer than said cannula and a pointed end of said cannula of said cannula protrudes from a forward end of the catheter; a flexible wire with one end attached to the cannula and extending through a bore of the catheter for retracting said cannula rearwardly through said catheter, said catheter-wire-cannula combination being rigid along the cannula length and flexible rearward of said cannula.
Claim 18
Dependent Claim
20 words
Intravenous catheter apparatus as set forth in claim 16 wherein the hub and flexible sheath are removable from the combination.
Claim 19
Dependent Claim
29 words
Intravenous catheter apparatus as set forth in claim 16 wherein the wire has a handle means attached to an end of the wire opposite the wire''s cannula attached end.
Claim 20
Dependent Claim
37 words
Intravenous catheter apparatus as set forth in claim 16 wherein the catheter has a hollow adapter on an end of the catheter with said flexible sheath and the apparatus includes a removable closure for said hollow adapter.
Claim 21
Dependent Claim
142 words
Intravenous catheter apparatus comprising: a rigid puncturing cannula; a flexible catheter telescoped on an outside surface of the puncturing cannula, said catheter being substantially longer than said cannula and having a pointed end of said cannula protruding from a forward end of the catheter; a flexible wire with one end attached to the cannula and extending through a bore of the cannula for retracting said cannula through said catheter, said catheter-wire-cannula combination being rigid along the length of said cannula but flexible rearward of said cannula; a grasping hub connected to the rigid portion of the catheter-wire-cannula combination; a flexible inner sheath connected between the catheter and the wire and adapted to encase said wire as this wire is pulled out of the catheter''s bore; and a flexible outer sheath encasing the inner sheath and the flexible portion of the catheter-wire-cannula combination.
Claim 22
Dependent Claim
142 words
Intravenous catheter apparatus comprising: a rigid puncturing cannula; a flexible catheter telescoped on an outside surface of the puncturing cannula, said catheter being substantially longer than said cannula and having a pointed end of said cannula protruding from a forward end of the catheter; a flexible wire with one end attached to the cannula and extending through a bore of the cannula for retracting said cannula through said catheter, said catheter-wire-cannula combination being rigid along the length of said cannula but flexible rearward of said cannula; a grasping hub connected to the rigid portion of the catheter-wire-cannula combination; a flexible inner sheath connected between the catheter and the wire and adapted to encase said wire as this wire is pulled out of the catheter''s bore; and a flexible outer sheath encasing the inner sheath and the flexible portion of the catheter-wire-cannula combination.
Claim 23
Dependent Claim
24 words
Intravenous catheter apparatus as set forth in claim 20 wherein the apparatus has a cannula housing removably attached to a rear of the catheter.
Claim 24
Dependent Claim
20 words
Intravenous catheter apparatus as set forth in claim 21 wherein the cannula housing is encased in the inner flexible sheath.
Claim 25
Dependent Claim
66 words
Intravenous catheter apparatus as set forth in claim 21 wherein the cannula housing has a mouth closed off by a closure with said wire passing through an opening in said closure, said opening being sufficiently small so the closure can act as a stop against a shoulder at a rear end of the cannula caused by the cannula having a larger outside diameter than said wire.
Claim 26
Dependent Claim
22 words
Intravenous catheter apparatus as set forth in claim 23 wherein the closure is a resilient diaphragm through which the wire is threaded.
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) | 1974-07-12 | 1975-01-11 | 1975-07-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-07-12 | 1979-01-11 | 1979-07-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-07-12 | 1983-01-11 | 1983-07-13 | $7700.00 | Window Closed / Lapsed |