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US 6,663,595 B2Granted
Peelable PTFE sheaths and methods for manufacture of same
AssigneeTFX Medical, Incorporated
InventorsPeter Dwight Spohn, Dean David Dinsmore
Life of this patent
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Abstract
The present invention provides improved medical introducer devices which incorporate a single or multi-layer PTFE peelable sheath. Devices of the present invention are suitable for use in inserting an ancilliary medical device, e.g., a catheter, guide wire and the like, into a patient. Methods of the present invention also are disclosed which employ a precision sintering process in order to produce sheaths having excellent tear properties and optimal peelability.
Claims9
A medical introducer device comprising:
- (a) a single-layer, peelable PTFE sheath having a bore extending therethrough and that does not include mechanically produced skiving for longitudinal splitting of the sheath, the sheath thermally cured to provide a peel strength of at least about 0.5 lbs with a standard deviation of no greater than about 0.40 lbs;
- and
- (b) a hub unit attached at a proximal end of the peelable sheath which facilitates splitting of the peelable sheath upon application of an effective shearing force thereon.
Dependencies are inferred from the claim text.