Implant delivery system with interlocked RX port orientation
First Claim
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1. A system for delivering a self-expanding implant within a body lumen comprising:
- a tubular catheter having proximal and distal ends and comprising an outer shaft member slidably disposed about an inner shaft member, the inner shaft member having a first interlock structure;
a tubular self-expanding implant disposed intermediate the inner and outer shaft members, a proximal end of the implant having a second interlock structure configured to mate with the first interlock structure to maintain rotational alignment between the implant and the inner shaft member;
a guide wire lumen extending at least partially through the inner shaft member from a proximal opening to a distal opening in the inner shaft member and exiting the outer shaft member through a radial guide wire lumen opening of the outer shaft member at a location intermediate of the catheter proximal end and the proximal opening in the inner shaft member; and
an alignment mechanism comprising a contact surface disposed about an inner circumference of the outer shaft member, said inner circumference being in frictional contact with at least a portion of the self-expanding implant to maintain rotational alignment of the outer shaft member relative to the inner shaft member, thereby maintaining alignment between the guide wire lumen and the guide wire lumen opening.
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Abstract
A medical implant delivery system maintains an orientation between a guidewire lumen of an inner member of the system and a rapid-exchange port in an outer member. The medical device is disposed intermediate the inner and outer members and in friction or pressure-fit contact with the outer member. Once the guidewire lumen of the inner member and the rapid exchange port of the outer member are oriented, the friction or pressure-fit operates to maintain the orientation until deployment of the medical implant. Orientation is further maintained by a telescoping coupling of the guide wire lumen with the rapid exchange port.
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Citations
16 Claims
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1. A system for delivering a self-expanding implant within a body lumen comprising:
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a tubular catheter having proximal and distal ends and comprising an outer shaft member slidably disposed about an inner shaft member, the inner shaft member having a first interlock structure; a tubular self-expanding implant disposed intermediate the inner and outer shaft members, a proximal end of the implant having a second interlock structure configured to mate with the first interlock structure to maintain rotational alignment between the implant and the inner shaft member; a guide wire lumen extending at least partially through the inner shaft member from a proximal opening to a distal opening in the inner shaft member and exiting the outer shaft member through a radial guide wire lumen opening of the outer shaft member at a location intermediate of the catheter proximal end and the proximal opening in the inner shaft member; and an alignment mechanism comprising a contact surface disposed about an inner circumference of the outer shaft member, said inner circumference being in frictional contact with at least a portion of the self-expanding implant to maintain rotational alignment of the outer shaft member relative to the inner shaft member, thereby maintaining alignment between the guide wire lumen and the guide wire lumen opening. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A system for delivering a medical device within a body lumen comprising:
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a tubular inner shaft member having a proximal end and a distal end and an inner shaft guide wire lumen radially offset from a center axis of the tubular inner shaft member and extending at least partially therethrough, and a guide wire extension tube extending proximally from the proximal end of the tubular inner shaft member; a tubular outer shaft member having a proximal end and a distal end and defining an outer shaft guide wire lumen extending at least partially therethrough and a guide wire opening disposed in a sidewall of the outer shaft member at a location proximal of the distal end of the outer shaft member, the outer shaft guide wire lumen being radially offset from a center axis of the tubular outer shaft member and slidably receiving the guide wire extension tube, the outer shaft member being slidably disposed about the inner shaft member; a push wire connected to the proximal end of the tubular inner shaft member for slidably moving the tubular inner shaft member in the tubular outer shaft member; and a self-expanding medical device disposed intermediate the inner and outer shaft members in a compressed configuration, a first end of the medical device having tab portions releasably coupled to an interlock mechanism disposed on the inner shaft member to maintain rotational alignment between the medical device and the inner shaft member, the compressed medical device being in friction contact with an inner surface of the outer shaft member, the friction contact between the medical device and the outer shaft member maintaining rotational alignment between the guide wire extension tube and the outer shaft guide wire lumen. - View Dependent Claims (11, 12, 13, 14, 15, 16)
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Specification