Hemostatis valve
First Claim
Patent Images
1. In a hemostasis valve, the improvement comprising:
- a first planar elastic membrane having a circular hole disposed therein;
a second planar elastic membrane having a circular hole with a diameter smaller than said circular hole in said first elastic membrane, said second elastic membrane further comprising at least one slit which intersects said smaller hole, said slit aligned in a single plane extending through said elastic membrane; and
a third planar elastic membrane with no hole having at least one slit therein.
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Accused Products
Abstract
An introducer sheath assembly having an improved valve assembly including at least three elastic disc shaped membranes. A first membrane has a circular hole through the center to sealingly receive a catheter while a second membrane has a center hole smaller than the hole in the first membrane to sealingly receive a guidewire. The second membrane also has at least one slit through the hole to accommodate passage of the larger catheter through the second membrane. A third membrane contains at least one slit through its center to seal the valve assembly in the absence of a guidewire or catheter.
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Citations
24 Claims
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1. In a hemostasis valve, the improvement comprising:
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a first planar elastic membrane having a circular hole disposed therein; a second planar elastic membrane having a circular hole with a diameter smaller than said circular hole in said first elastic membrane, said second elastic membrane further comprising at least one slit which intersects said smaller hole, said slit aligned in a single plane extending through said elastic membrane; and a third planar elastic membrane with no hole having at least one slit therein. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A hemostasis valve comprising:
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connector means having an inlet end, an opposite outlet end, and a passage through said valve extending from said inlet end to said outlet end; a plurality of elastic membranes mounted in said passage, said plurality comprising; a first planar elastic membrane having a circular hole disposed therein; a second planar elastic membrane having a circular hole with a diameter smaller than said circular hole in said first elastic membrane said second elastic membrane further comprising at least one slit which intersects said smaller hole, said slit aligned in a single plane extending through said elastic membrane; and a third planar elastic membrane having at least one slit therein. - View Dependent Claims (10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24)
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Specification