Valved sheath introducer for venous cannulation
First Claim
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1. An apparatus for insertion of a medical device into a body, comprising:
- a sheath comprising a sheath body and a handle, the handle including one or more receiving sections;
a valve comprising a slit through a central portion thereof and one or more anchoring members configured for insertion into a respective handle receiving section, the anchoring member being positioned along an edge of the valve;
the valve including a valve material wherein upon insertion of an instrument through the valve, the material of the instrument stretches the valve material inward, and wherein upon following removal of the instrument from the valve, a portion of the material is prevented from returning to its original position between the cap and the handle, resulting in a bunching effect that causes the valve material to have a substantially different shape compared to a shape of the valve material prior to insertion of the instrument; and
a cap attached to the handle, at least a portion of the valve being compressed therebetween.
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Abstract
A valved sheath introducer for venous cannulation, including a valve, sheath, handle and cap. The valve is configured to permit safe introduction and removal of medical instruments through the sheath introducer. The valve may have one or more anchoring members and a thickened central portion through which a slit is formed. The central portion may have one or more concave surfaces and the slit can be angled with respect to the top surface of the valve. The cap is attached to the handle, compressing a portion of the valve therebetween.
450 Citations
22 Claims
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1. An apparatus for insertion of a medical device into a body, comprising:
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a sheath comprising a sheath body and a handle, the handle including one or more receiving sections; a valve comprising a slit through a central portion thereof and one or more anchoring members configured for insertion into a respective handle receiving section, the anchoring member being positioned along an edge of the valve; the valve including a valve material wherein upon insertion of an instrument through the valve, the material of the instrument stretches the valve material inward, and wherein upon following removal of the instrument from the valve, a portion of the material is prevented from returning to its original position between the cap and the handle, resulting in a bunching effect that causes the valve material to have a substantially different shape compared to a shape of the valve material prior to insertion of the instrument; and a cap attached to the handle, at least a portion of the valve being compressed therebetween. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 21, 22)
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19. An apparatus for introducing a medical device into a body, comprising:
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a valve, comprising anchoring means for anchoring the valve in a handle and self-sealing means for permitting access of an instrument through the valve and for sealing upon removal of the instrument from the valve, the self-sealing means including a configuration after removal of the instrument therefrom that is includes a substantially different shape compared to a shape of the self sealing means prior to the instrument being inserted therethrough; and a cap attached to the handle, at least a portion of the valve adjacent the anchoring means being compressed therebetween. - View Dependent Claims (20)
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Specification