System and method for mechanically positioning intravascular implants
First Claim
1. An apparatus for therapeutic implant delivery and retrieval, comprising:
- a tubular wall having a distal end and a tubular wall inner cross-sectional dimension at an internal cavity, the tubular wall distal end comprising an outer surface, an inner surface, a distal end surface, and a port extending through the distal end surface along a longitudinal axis of the tubular wall, the inner surface of the tubular wall distal end at least partially enclosing the internal cavity communicating with the port, the port having a port inner cross-sectional dimension, less than the tubular wall inner cross-sectional dimension;
a cord disposed in the internal cavity comprising a distal end disposed in the port; and
an implant disposed distal of the tubular wall distal end surface and comprising an extension extending proximally through the port and past a proximally facing surface of the port and adjacent to the cord, the extension configured to engage the cord while the cord distal end is disposed in the port and while the extension is disposed within the internal cavity, wherein the cord is configured to disengage from the extension by moving the cord distal end proximally from the port to within the internal cavity;
wherein the tubular wall inner cross-sectional dimension is greater than the port cross-sectional dimension along the length of the tubular wall.
6 Assignments
0 Petitions
Accused Products
Abstract
An intravascular implant delivery system carries an implant by retaining an engagement member engaging the implant in a position proximal of an aperture at a distal end of the delivery system. The engagement member is retained proximal to the aperture by a cord that obstructs the movement of the engagement member through the aperture. The engagement member is free to rotate and move within an area defined by the delivery system, allowing the implant to react to forces imparted to the implant by the movement of the delivery system and implant through a delivery catheter. Once the implant is in a desired implant position, the cord is moved away from an aperture and the engagement member is allowed to move away from the delivery system.
-
Citations
44 Claims
-
1. An apparatus for therapeutic implant delivery and retrieval, comprising:
-
a tubular wall having a distal end and a tubular wall inner cross-sectional dimension at an internal cavity, the tubular wall distal end comprising an outer surface, an inner surface, a distal end surface, and a port extending through the distal end surface along a longitudinal axis of the tubular wall, the inner surface of the tubular wall distal end at least partially enclosing the internal cavity communicating with the port, the port having a port inner cross-sectional dimension, less than the tubular wall inner cross-sectional dimension; a cord disposed in the internal cavity comprising a distal end disposed in the port; and an implant disposed distal of the tubular wall distal end surface and comprising an extension extending proximally through the port and past a proximally facing surface of the port and adjacent to the cord, the extension configured to engage the cord while the cord distal end is disposed in the port and while the extension is disposed within the internal cavity, wherein the cord is configured to disengage from the extension by moving the cord distal end proximally from the port to within the internal cavity; wherein the tubular wall inner cross-sectional dimension is greater than the port cross-sectional dimension along the length of the tubular wall. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
-
-
14. An apparatus for therapeutic implant delivery and retrieval, comprising:
-
a tube having a tubular wall, a proximal end, a distal end, a distal end port, a lumen, an intermediate wall at a predetermined distance proximal to the distal end port, the intermediate wall partially extending into the lumen from the tubular wall; a cord disposed in the lumen and extending distally beyond the intermediate wall, the cord comprising a cord distal end disposed in the port; and an implant comprising an extension extending through the port and proximally of the distal end port and adjacent to the cord, the extension configured to engage a proximally facing surface of the port and engage the cord within the lumen while the cord distal end is disposed in the port and while the extension is disposed within the lumen; wherein the tubular wall has a tubular wall inner cross-sectional dimension at the lumen; wherein the port extends through the distal end along a longitudinal axis of the tubular wall, the port having a port inner cross-sectional dimension, less than the tubular wall inner cross-sectional dimension; and wherein the tubular wall inner cross-sectional dimension is greater than the port cross-sectional dimension along the length of the tubular wall. - View Dependent Claims (15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28)
-
-
29. An apparatus for positioning an implant in a patient, comprising:
-
a delivery tube configured to be delivered into the vasculature of the patient; a positioner tube comprising a flexible tubular wall with a longitudinal tubular wall axis and having a proximal end, a distal end and a lumen extending therethrough, the positioner tube configured to be disposed within the delivery tube, the distal end having a distal wall at least partially enclosing an internal cavity and a port in communication with the internal cavity; an actuator engaged with the positioner tube and configured to be operated by an operator; a cord extending through the lumen of the positioner tube, the cord having a proximal end connected to the actuator and a distal end disposed in the port and configured to be moved distally toward the port and proximally away from the port; an implant having a proximal extension extending through the port and proximally of the port into the lumen and adjacent to the cord, wherein the proximal extension is configured to engage the cord in the lumen when the cord distal end is disposed in the port, and the proximal extension is configured to be released when the cord distal end is moved proximally out of the port; wherein the tubular wall has a tubular wall inner cross-sectional dimension at the lumen; wherein the port extends through the distal end along the tubular wall axis of the tubular wall, the port having a port inner cross-sectional dimension, less than the tubular wall inner cross-sectional dimension within the lumen proximal to the port; wherein the tubular wall inner cross-sectional dimension is greater than the port cross-sectional dimension along the length of the tubular wall. - View Dependent Claims (30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44)
-
Specification