EP0344907A2
Expired / Lapsed
EP
⏱️ 0.0 years remaining
Self-sealing guidewire and catheter introducer
Assignee: Medtronic Vascular Inc
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Filing: 1989-04-27
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Granted: —
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Expires: 2009-04-27
Abstract
Abstract A self-sealing catheter and guidewire introducer has a self-sealing gasket (14) adapted to effect a seal when a catheter (50) or guidewire (52) extends through the gasket as well as when neither extends through the gasket.
Inventors
- 👤 John T. Sylvanowicz
- 👤 George W. Bourne, Iv
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-10-23 04:38
CPC Classifications
A; A61; A61M; A61M39/00; A61M39/02; A61M39/06; A61M39/0606; A61M2039/062; A61M2039/0633; A61M2039/064; A61M2039/0686
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
157 words
An introducer adapted to be inserted into a patient's blood vessel comprising: a housing having an introducer sheath extending from an end of the housing, the sheath being adapted to be inserted into a patient's blood vessel, the housing having an opening at the other end; a self-sealing one piece gasket mounted in the housing and being exposed at the opening, the gasket having a central aperture in its outwardly facing surface, the aperture depth being substantially equal to one-half the thickness of the gasket, the inwardly facing surface of the gasket being formed with at least three radially extending slits, the depth of the slits being equal to or greater than one-half of the thickness of the gasket, the central region of the slits overlapping the central aperture and defining a plurality of flaps normally closing the aperture; the radius of the central aperture being substantially smaller than the radius defined by each of the slits.
Claim 2
Dependent Claim
157 words
An introducer adapted to be inserted into a patient's blood vessel comprising: a housing having an introducer sheath extending from an end of the housing, the sheath being adapted to be inserted into a patient's blood vessel, the housing having an opening at the other end; a self-sealing one piece gasket mounted in the housing and being exposed at the opening, the gasket having a central aperture in its outwardly facing surface, the aperture depth being substantially equal to one-half the thickness of the gasket, the inwardly facing surface of the gasket being formed with at least three radially extending slits, the depth of the slits being equal to or greater than one-half of the thickness of the gasket, the central region of the slits overlapping the central aperture and defining a plurality of flaps normally closing the aperture; the radius of the central aperture being substantially smaller than the radius defined by each of the slits.
Claim 3
Dependent Claim
24 words
A device as defined in claim 1 wherein the central aperture is approximately .029˝ diameter and the radial slits are approximately .075˝ in radius.
Claim 4
Independent Claim
32 words
A device as defined in claims 1 or 2 wherein the gasket is formed from a molded elastomeric material having a Shore A durometer of between about 35 A and 60 A.
Claim 5
Dependent Claim
14 words
A device as defined in claim 3 wherein the gasket is about .070˝ thick.
Claim 6
Dependent Claim
87 words
A device as defined in claim 1 wherein the housing includes an inner bore and an outer bore, the outer bore being larger than the inner bore and defining a shoulder at the juncture of the inner bore and the outer bore, the gasket having a diameter corresponding substantially to that of the outer bore; the gasket being secured in the housing by a cap receivable in the outer bore of the housing and being adapted to tightly compress the periphery of the gasket against the shoulder.
References Cited (Backward Citations)
No citation records indexed.
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