Surgery – Means for introducing or removing material from body for... – Treating material introduced into or removed from body...
Patent
1994-07-15
1996-05-28
Hirsch, Paul J.
Surgery
Means for introducing or removing material from body for...
Treating material introduced into or removed from body...
604256, A61M 3920, A61M 3926
Patent
active
055206557
ABSTRACT:
A catheter which carries a hemostasis valve, such as a catheter sheath introducer, carries a slit elastic valve partition as part of the hemostasis valve. The inner housing has a bore and the end cap has an aperture that each communicate with an opposed surface of the valve partition. The diameter of the aperture and the bore are each of a distance that exceeds the outer diameter of preferably a french six catheter extending through the catheter of this invention, plus two times the thickness of the partition. When these conditions are satisfied, larger diameter inner catheters can be slidably inserted and removed through the catheter and valve of this invention with reduced frictional characteristics. Also, a compression ring is provided between the valve partition and the end cap which causes the valve partition to bow outwardly against the end cap and toward the aperture thereof. This, in turn improves the sealing characteristics. Also, an improved slit design for the partition is disclosed.
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Davila Luis A.
De La Mata Carlo R.
Cordis Corporation
Hirsch Paul J.
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