Delivery system for implantable medical device
First Claim
1. A delivery device for implanting a medical device that includes at least one fixation member adapted to fix the position of the medical device within a lumen of a human body, the fixation member being expandable from a low profile configuration in which it can be passed into the lumen to an expanded configuration in which it engages a wall of the lumen to maintain the medical device in place, the delivery device comprising:
- a tubular outer shaft;
an inner shaft rotatably disposed in the outer shaft; and
at least one retention member having a free end, the retention member being secured to and rotatable with the inner shaft, each retention member being associated with an exit aperture formed in the outer shaft to enable a retainer portion of the retention member, that includes its free end, to protrude outwardly through its associated exit aperture, the retainer portion of the retention member being adapted to extend circumferentially about at least part of the exterior of the outer shaft, the retainer portion of the retention member being retractable into the outer shaft in response to rotation of the inner shaft;
whereby the fixation member of the medical device may be retained on the tubular shaft in its low profile configuration by the outwardly protruding retainer portion and may be released to expand to its expanded configuration upon retraction of the retainer portion in response to rotation of the inner shaft.
1 Assignment
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Accused Products
Abstract
A delivery device for implanting a medical device that includes an expandable fixation member adapted to fix the position of the medical device within a lumen of a human body. The delivery device has an inner shaft rotatably disposed in a tubular outer shaft. A retention member is secured to and rotatable with the inner shaft and has a free end and a retainer portion adapted to protrude outwardly through an exit aperture in the outer shaft to extend circumferentially about the exterior of the outer shaft. The fixation member of the medical device may be retained on the tubular shaft in a low profile configuration by the outwardly protruding retainer portion and may be released to expand upon retraction of the retainer portion in response to rotation of the inner shaft.
131 Citations
15 Claims
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1. A delivery device for implanting a medical device that includes at least one fixation member adapted to fix the position of the medical device within a lumen of a human body, the fixation member being expandable from a low profile configuration in which it can be passed into the lumen to an expanded configuration in which it engages a wall of the lumen to maintain the medical device in place, the delivery device comprising:
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a tubular outer shaft; an inner shaft rotatably disposed in the outer shaft; and at least one retention member having a free end, the retention member being secured to and rotatable with the inner shaft, each retention member being associated with an exit aperture formed in the outer shaft to enable a retainer portion of the retention member, that includes its free end, to protrude outwardly through its associated exit aperture, the retainer portion of the retention member being adapted to extend circumferentially about at least part of the exterior of the outer shaft, the retainer portion of the retention member being retractable into the outer shaft in response to rotation of the inner shaft; whereby the fixation member of the medical device may be retained on the tubular shaft in its low profile configuration by the outwardly protruding retainer portion and may be released to expand to its expanded configuration upon retraction of the retainer portion in response to rotation of the inner shaft. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14)
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15. A method of delivering and deploying a medical device that includes at least one fixation member adapted to fix the position of the medical device within a lumen of a human body, the fixation member being expandable from a low profile configuration in which it can be passed into the lumen and an expanded configuration in which it engages a wall of the lumen to maintain the medical device in place, the method comprising:
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mounting the medical device on a tubular catheter shaft with the fixation member in its low profile configuration; extending a retention member from within the catheter shaft through an aperture in the catheter shaft outwardly and circumferentially about the shaft and a portion of the low profile fixation member to retain the medical device on the shaft; navigating the catheter shaft and mounted medical device to an intended deployment site in a body lumen of a patient; and retracting the retention member into the catheter shaft to release the fixation member from the shaft and enabling the fixation member to expand to its expanded configuration in the lumen.
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Specification