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US 6,325,812 B1Granted
Trocar system having expandable port
AssigneeInnerdyne, Inc.
InventorsWilliam R. Dubrul, Craig K. Tsuji, John E. Carlson
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AssigneeInnerdyne, Inc.
InventorsWilliam R. Dubrul, Craig K. Tsuji, John E. Carlson
Estimating the term…
An apparatus and method for forming and enlarging percutaneous penetrations comprises an elongate dilation member which receives an elongate expansion member in an axial lumen thereof. The dilation tube includes a tubular braid which usually comprises a mesh of non-elastic filaments which are radially expandable from a small diameter configuration to a large diameter configuration and which is optionally covered by a removable sheath. The dilation tube is percutaneously introduced to a target site within a patient's body, usually within the abdomen in a laparoscopic procedure. The sheath (if present) is then removed, and the tubular braid thereafter radially expanded by axial insertion of the expansion member through its lumen. The tubular braid is anchored by axial shortening of the mesh and remains in place to permit subsequent exchange of dilation members to provide for different diameter access lumens. Trocar valves may be removably attached to the proximal end of the expansion member to permit the apparatus to be used as a trocar system in laparoscopic procedures where the patient's abdomen has been insufflated. An anchoring means may optionally be provided at the distal end of the expansion member.
An apparatus for forming and enlarging a percutaneous penetration, said apparatus comprising:
A radially expandable trocar system comprising:
An improved trocar of the type including a fixed-radius tubular element having a trocar valve at a proximal end thereof, wherein the improvement comprises:
A method for forming and enlarging a percutaneous penetration to a target location within a patient's body, said method comprising:
Dependencies are inferred from the claim text.