Prosthesis delivery and deployment device
First Claim
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1. A device for delivering and deploying a prosthesis comprising:
- an elongate sheath having a sheath lumen;
a delivery catheter slidably disposed within the sheath lumen; and
a deployment assist mechanism comprising a stored energy device having a proximal end coupled to the delivery catheter and a distal end coupled to the sheath and configured to apply a retraction force, independent of a manual force required to retract the sheath, to both the delivery catheter and the sheath;
where the sheath is retractable over the delivery catheter over a retraction distance; and
where the device has a retraction resistance and the stored energy device applies the retraction force that is at the same time greater than zero and less than or equal to the retraction resistance over a length of the retraction distance, during manual retraction of the sheath,wherein the direction of the retraction force applied by the stored energy device is substantially parallel with the sheath.
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Abstract
A device for delivering and deploying a prosthesis is described and comprises an elongate sheath having a sheath lumen and a delivery catheter slidably disposed within the sheath lumen. A deployment assist mechanism may be coupled to the delivery catheter and the sheath and configured to apply a retraction force to the delivery catheter and the sheath. Additional devices, systems, and methods of delivering and deploying a prosthesis are described.
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Citations
19 Claims
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1. A device for delivering and deploying a prosthesis comprising:
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an elongate sheath having a sheath lumen; a delivery catheter slidably disposed within the sheath lumen; and a deployment assist mechanism comprising a stored energy device having a proximal end coupled to the delivery catheter and a distal end coupled to the sheath and configured to apply a retraction force, independent of a manual force required to retract the sheath, to both the delivery catheter and the sheath; where the sheath is retractable over the delivery catheter over a retraction distance; and where the device has a retraction resistance and the stored energy device applies the retraction force that is at the same time greater than zero and less than or equal to the retraction resistance over a length of the retraction distance, during manual retraction of the sheath, wherein the direction of the retraction force applied by the stored energy device is substantially parallel with the sheath. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18)
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19. A device for delivering and deploying a prosthesis comprising:
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an elongate sheath having a sheath lumen; a delivery catheter slidably disposed within the sheath lumen; and a means for reducing the retraction force required to manually retract the sheath over the delivery catheter over a retraction distance; where the reduced retraction force in a longitudinal direction is greater than zero over a length of the retraction distance, during manual retraction of the sheath, wherein the means for reducing the retraction force comprises a stored energy device having a distal end coupled to the sheath and a proximal end coupled to the delivery catheter that applies a force to both the sheath and the delivery catheter in a direction substantially parallel with the sheath.
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Specification