Trocar system having expandable port
First Claim
1. A dilation tube comprising:
- a handle having a passage therethrough;
an expandable tube having a distal end, a proximal end, and an axial lumen aligned with the passage in the handle, wherein the tube is attached at its proximal end to one handle and the tube is expandable from a narrow diameter configuration to a radially expanded configuration along its entire length from the proximal end to the distal end; and
an elastic or plastic layer covering the tube.
3 Assignments
0 Petitions
Accused Products
Abstract
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.
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Citations
25 Claims
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1. A dilation tube comprising:
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a handle having a passage therethrough; an expandable tube having a distal end, a proximal end, and an axial lumen aligned with the passage in the handle, wherein the tube is attached at its proximal end to one handle and the tube is expandable from a narrow diameter configuration to a radially expanded configuration along its entire length from the proximal end to the distal end; and an elastic or plastic layer covering the tube. - View Dependent Claims (2, 3, 4, 5, 6)
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7. A dilation tube comprising:
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a tubular element having a proximal end, a distal end, and a lumen therethrough, said element including a tubular braid reinforcement layer which at least partly defines a tubular wall thereof and wherein said tubular element and lumen are expandable along their entire length from a narrow diameter configuration to a radially expanded configuration; and a handle attached to the proximal end of the tubular element and having a passage therethrough aligned with the lumen of the tubular element. - View Dependent Claims (8, 9)
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10. A method for providing a percutaneous access lumen in a patient, said method comprising:
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providing a radially expandable dilation tube having a needle removably inserted in an axial lumen thereof; penetrating the dilation tube and needle through tissue to a target location; withdrawing the needle from the dilation tube to leave the axial lumen available for subsequent introduction of a member. - View Dependent Claims (11, 12, 13, 14)
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15. A method for percutaneously positioning a dilation tube in a patient, said method comprising:
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penetrating the dilation tube through tissue to a target location, wherein the dilation tube is radially expandable; passing a member through an axial lumen of the dilation tube to radially expand the dilation member from a narrow diameter configuration to a radially expanded configuration; and removing the expansion member, wherein the dilation tube at least partly collapses but continues to provide an access lumen for subsequent introduction of another tube therethrough. - View Dependent Claims (16, 17, 18, 19)
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20. A dilation tube comprising:
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a handle having a passage therethrough, said passage having a diameter, an expandable tube having a distal end, a proximal end, and an axial lumen aligned with the passage in the handle, wherein the proximal end of the tube has a diameter substantially equal to the remainder of the tube and wherein the remainder of the tube is expandable from a narrow diameter configuration to a radially expanded configuration along its entire length; and an elastic or plastic layer covering the tube. - View Dependent Claims (21, 22, 23, 24, 25)
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Specification