Variable expansion frame system for deploying medical devices and methods of use
First Claim
1. A variable diameter expansion frame, comprising:
- an outer wire having a proximal end, a distal end, and a lumen therebetween;
an inner wire having a proximal end and a distal end, the inner wire being disposed within the lumen of the outer wire, the inner wire slideable relative to the outer wire; and
a substantially circular frame attached at a first circumferential point to the distal end of the outer wire, and attached at a second circumferential point to the distal end of the inner wire, the first circumferential point being disposed approximately 180°
from the second circumferential point, wherein, during use, the outer wire is displaced relative to the inner wire, and the circular frame is caused to rotate about an axis perpendicular to the line defined by the first and second circumferential points.
4 Assignments
0 Petitions
Accused Products
Abstract
An expansion frame system for deploying medical devices in a patient'"'"'s body cavity. The system typically includes an inner wire disposed within a lumen of an outer wire. Distal ends of the inner and outer wires are attached to a substantially circular frame at first and second points. During use, the outer wire is displaced relative to the inner wire, causing the circular frame to rotate about an axis perpendicular to the line defined by the first and second points. Medical devices, such as a filter, a stent, an occluder or a manometer, can be mounted on the circular frame. The diameter of the expansion frame can be varied to achieve optimal contact with the luminal wall of the body cavity. Methods of using the expansion frame system for temporary or permanent placement of a medical device is disclosed.
-
Citations
42 Claims
-
1. A variable diameter expansion frame, comprising:
-
an outer wire having a proximal end, a distal end, and a lumen therebetween;
an inner wire having a proximal end and a distal end, the inner wire being disposed within the lumen of the outer wire, the inner wire slideable relative to the outer wire; and
a substantially circular frame attached at a first circumferential point to the distal end of the outer wire, and attached at a second circumferential point to the distal end of the inner wire, the first circumferential point being disposed approximately 180°
from the second circumferential point,wherein, during use, the outer wire is displaced relative to the inner wire, and the circular frame is caused to rotate about an axis perpendicular to the line defined by the first and second circumferential points. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
-
-
14. A method for deploying a medial device within a body, comprising the steps of:
-
providing an expansion frame comprising an outer wire, an inner wire, and a substantially circular frame attached at a first point to a distal end of the outer wire, and attached at a second point to a distal end of the inner wire, the inner wire being disposed within the lumen of the outer wire, the inner wire slideable relative to the outer wire;
introducing the expansion frame into a lumen within the body of a patient;
advancing the expansion frame to a region of interest; and
retracting a proximal end of the outer wire relative to a proximal end of the inner wire, wherein the circular frame rotates about an axis perpendicular to the line defined by the first and second point, and the circular frame thereby circumferentially engages the luminal wall. - View Dependent Claims (15, 16, 17, 18, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37)
a self-expanding stent disposed about the outer wire; and
a sheath disposed about the stent, wherein the sheath is retracted to release the stent.
-
-
34. The method of claim 17, wherein the step of introducing the expansion frame into the vessel comprises advancing the expansion frame through an introducer.
-
35. The method of claim 34, wherein the introducer comprises a cannula.
-
36. The method of claim 34, wherein the introducer is a port on a cannula.
-
37. The method of claim 36, wherein the port is separate from a lumen of the cannula.
-
19. An expansion frame system, comprising:
-
a cannula having a proximal end, a distal end, a first lumen therebetween, and a side port communicating with a second lumen which extends to the distal end of the cannula; and
a variable diameter expansion frame comprising an outer wire having a proximal end and a distal end, an inner wire having a proximal end and a distal end, the inner wire being disposed within the lumen of the outer wire, the inner wire slideable relative to the outer wire, and a substantially circular frame attached at a first circumferential point to the distal end of the outer wire, and attached at a second circumferential point to the distal end of the inner wire, the first circumferential point being disposed approximately 180°
from the second circumferential point,wherein, during use, the expansion frame is advanced through the side port of the cannula and is deployed within the lumen of a vessel. - View Dependent Claims (38, 39, 40, 41, 42)
-
Specification