Endoscopic portal
First Claim
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1. A seal assembly for use with an endoscopic portal to engage surgical instruments of various sizes passing therethrough in sealing relation comprisinga member having a central opening therein;
- a plurality of legs disposed around said opening and being spreadable outwardly from an inwardly extending position when a surgical instrument is passed through said seal assembly, said legs being made of non-elastomeric material; and
a stretchable membrane disposed over said legs, said membrane stretching when said legs spread outwardly from said inwardly extending position and said membrane having a hole therein for sealing engagement with a surgical instrument passed through said seal assembly.
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Abstract
An endoscopic portal includes a valve assembly disposed at an open proximal end of a sleeve or cannula providing access to an internal operative site, the valve assembly having a passage therethrough of variable size to engage surgical instruments passing therethrough in sealing relation to prevent flow or leakage of fluid through the valve assembly.
160 Citations
8 Claims
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1. A seal assembly for use with an endoscopic portal to engage surgical instruments of various sizes passing therethrough in sealing relation comprising
a member having a central opening therein; -
a plurality of legs disposed around said opening and being spreadable outwardly from an inwardly extending position when a surgical instrument is passed through said seal assembly, said legs being made of non-elastomeric material; and a stretchable membrane disposed over said legs, said membrane stretching when said legs spread outwardly from said inwardly extending position and said membrane having a hole therein for sealing engagement with a surgical instrument passed through said seal assembly. - View Dependent Claims (2, 3, 4)
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5. A seal assembly for use with an endoscopic portal to engage surgical instruments of various sizes passing therethrough in sealing relation comprising
a housing having a passage therethrough; -
a stretchable membrane disposed over said passage to tightly engage a surgical instrument passing through said housing; and a plurality of spaced legs of nylon-like material disposed in said housing proximally of said membrane to be contacted by a surgical instrument passing through said housing and to flex outwardly stretching said membrane. - View Dependent Claims (6)
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7. A seal assembly for use with an endoscopic portal to engage surgical instruments of various sizes passing therethrough in sealing relation comprising
a member having a central opening therein; -
a plurality of legs disposed around said opening and being spreadable outwardly from an inwardly extending position when a surgical instrument is passed through said opening, said legs being made of a material facilitating movement of a surgical instrument therethrough; and a stretchable membrane disposed tightly over said legs, said membrane stretching when said legs are spread outwardly from said inwardly extending position and said membrane having a hole therein for sealing engagement with a surgical instrument passed through said opening.
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8. A seal assembly for use with an endoscopic portal to engage surgical instruments of various sizes passing therethrough in sealing relation comprising
a member having a central opening therein; -
a plurality of legs disposed around said opening and being spreadable outwardly from an inwardly extending position when a surgical instrument in passed through said opening, said legs being made of a material facilitating movement of a surgical instrument therethrough; and a stretchable membrane disposed over said legs in a manner biasing said legs to said inwardly extending position, said membrane stretching when said legs are spread outwardly from said inwardly extending position and said membrane having a hole therein for sealing engagement with a surgical instrument passed through said opening.
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Specification