Trocar anchor
First Claim
1. An access assembly comprising:
- a tubular member having a proximal end, a distal end, an elastic portion interposed therebetween, and further defining a lumen therethrough; and
an anchor sleeve disposed coaxially over the tubular member, said sleeve having a radially expandable region, wherein the anchor sleeve is moveable between an axially elongated configuration and an axially shortened configuration, further wherein the anchor sleeve is biased toward the axially shortened configuration by a force exerted by the elastic portion of the tubular member.
2 Assignments
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Accused Products
Abstract
Apparatus and methods for providing access to a body cavity without substantial loss of inflation gas therein. The apparatus includes an access assembly that has a tubular member having a proximal end, a distal end, an elastic portion interposed the proximal end and the distal end, and a lumen therethrough. An anchor sleeve is disposed coaxially over the tubular member and has a radially expandable region. The anchor sleeve is moveable between an axially elongated configuration and an axially shortened configuration and is biased toward the axially shortened configuration by a force exerted by the elastic portion of the tubular member. The axially shortened configuration corresponds to the anchor sleeve being in the fully deployed position. Methods for providing anchored access to a cavity within a patient are also disclosed.
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Citations
24 Claims
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1. An access assembly comprising:
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a tubular member having a proximal end, a distal end, an elastic portion interposed therebetween, and further defining a lumen therethrough; and
an anchor sleeve disposed coaxially over the tubular member, said sleeve having a radially expandable region, wherein the anchor sleeve is moveable between an axially elongated configuration and an axially shortened configuration, further wherein the anchor sleeve is biased toward the axially shortened configuration by a force exerted by the elastic portion of the tubular member. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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12. A method for providing anchored access to a cavity within a patient, said method comprising the steps of:
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providing a tubular member having an anchor sleeve disposed coaxially over the tubular member, said anchor sleeve having a radially expandable region, wherein the anchor sleeve is moveable between an axially elongated configuration and an axially shortened configuration and is biased toward the axially shortened configuration by a force exerted by an elastic portion of the tubular member;
elongating the anchor sleeve in an axial direction to reduce an outside diameter of the sleeve;
inserting the tubular member and anchor sleeve into a percutaneous opening in a patient; and
returning the anchor sleeve to its biased axially shortened configuration, thereby forming a seal against an inside surface of the dermis of a patient around the percutaneous opening. - View Dependent Claims (13, 14, 15, 16, 17)
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18. A trocar access assembly comprising:
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an access assembly having a proximal end portion, a distal end portion and a lumen therethrough; and
a self-adjusting sheath tube disposed within the lumen defined by the access assembly, wherein the self-adjusting sheath tube comprises an elastic section to maintain a constant force on the access assembly to bias the access assembly towards a deployed position. - View Dependent Claims (19, 20, 21, 22, 23, 24)
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Specification