Split sheath deployment system
First Claim
Patent Images
1. A device for delivering and deploying a radially expandable prosthesis, the device comprising:
- a proximal release mechanism comprising a proximal sheath radially disposed over a proximal portion of a prosthesis, wherein the proximal sheath is slidable proximally relative to the prosthesis to release the proximal portion of the prosthesis, the proximal release mechanism comprising a first resistance;
a distal release mechanism comprising a distal sheath radially disposed over a distal portion of the prosthesis, wherein the distal sheath is slidable distally relative to the prosthesis to release the distal portion of the prosthesis, the distal release mechanism comprising a second resistance;
an actuation mechanism for actuating the proximal and distal release mechanisms in a single coordinated movement; and
a biasing compensator having a longitudinally-directed biasing force acting directly on at least one of the proximal sheath and the distal sheath, whereby the biasing compensator requlates the relationship between the first resistance and the second resistance.
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Abstract
A device for delivering and deploying a radially expandable prosthesis is disclosed and comprises a proximal prosthesis release mechanism having a first resistance and a distal prosthesis release mechanism having a second resistance. The device further comprises an actuation mechanism for actuating the distal and proximal release mechanisms in a single coordinated movement and a biasing compensator for regulating the relationship between the first resistance and the second resistance. Additional aspects of the invention include devices and methods for delivering and deploying a radially expandable prosthesis.
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Citations
21 Claims
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1. A device for delivering and deploying a radially expandable prosthesis, the device comprising:
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a proximal release mechanism comprising a proximal sheath radially disposed over a proximal portion of a prosthesis, wherein the proximal sheath is slidable proximally relative to the prosthesis to release the proximal portion of the prosthesis, the proximal release mechanism comprising a first resistance; a distal release mechanism comprising a distal sheath radially disposed over a distal portion of the prosthesis, wherein the distal sheath is slidable distally relative to the prosthesis to release the distal portion of the prosthesis, the distal release mechanism comprising a second resistance; an actuation mechanism for actuating the proximal and distal release mechanisms in a single coordinated movement; and a biasing compensator having a longitudinally-directed biasing force acting directly on at least one of the proximal sheath and the distal sheath, whereby the biasing compensator requlates the relationship between the first resistance and the second resistance. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14)
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15. A device for delivering and deploying a radially expandable prosthesis, the device comprising:
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a first elongate member comprising a lumen and having a radially expandable prosthesis disposed over a distal portion of the first elongate member; a second elongate member slidably disposed within the lumen of the first elongate member and comprising a distal sheath for releasably retaining a distal portion of the prosthesis, wherein the delivery and deployment device has a distal release resistance; a third elongate member comprising a lumen, the third elongate member slidably disposed over the first elongate member and comprising a proximal sheath for releasably retaining a proximal portion of the prosthesis, wherein the delivery and deployment device has a proximal release resistance; an actuation mechanism for moving the second elongate member distally relative to the first elongate member and the third elongate member proximally relative to the first elongate member to release the distal and the proximal portions of the prosthesis in a single coordinated movement; and a biasing compensator disposed between the proximal end of the second elongate member and the proximal end of the third elongate member, the biasing compensator having a longitudinally-directed biasing force for regulating the relationship between the distal release resistance and the proximal release resistance. - View Dependent Claims (16, 17, 18, 19)
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20. A device for delivering and deploying a radially expandable prosthesis, the device comprising:
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a proximal release mechanism comprising a proximal sheath radially disposed over a proximal portion of a prosthesis, wherein the proximal sheath is slidable proximally relative to the prosthesis to release the proximal portion of the prosthesis, the proximal release mechanism comprising a first resistance; a distal release mechanism comprising a distal sheath radially disposed over a distal portion of the prosthesis, wherein the distal sheath is slidable distally relative to the prosthesis to release the distal portion of the prosthesis, the distal release mechanism comprising a second resistance; an actuation mechanism for actuating the proximal and distal release mechanisms in a single coordinated movement; and a longitudinally compressible biasing compensator acting directly on at least one of the proximal sheath and the distal sheath, whereby the biasing compensator regulates the relationship between the first resistance and the second resistance.
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21. A device for delivering and deploying a radially expandable prosthesis, the device comprising:
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a delivery catheter having a proximal end and a distal end; a radially expandable prosthesis disposed over a distal end portion of the delivery catheter; a proximal release mechanism comprising a proximal sheath disposed over and releasably retaining a proximal portion of the prosthesis, the proximal release mechanism comprising a first resistance; a distal release mechanism comprising a distal sheath disposed over and releasably retaining a distal end portion of the prosthesis, the distal release mechanism comprising a second resistance; an actuation mechanism disposed at a proximal end portion of the delivery catheter and comprising a first handle portion coupled to the proximal release mechanism and a second handle portion coupled to the distal release mechanism, wherein sliding the first handle portion with respect to the second handle portion actuates the proximal and distal release mechanisms at the same time; the actuation mechanism further comprising a biasing compensator having a longitudinally-directed biasing force acting on at least one of the proximal sheath and the distal sheath, whereby the biasing compensator regulates the relationship between the first resistance and the second resistance.
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Specification