Systems and methods for attaching a prosthesis within a body lumen or hollow organ
First Claim
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1. A motor-driven tool for applying an implantation force to a helical fastener sized and configured for penetration in tissue comprising:
- a tool body;
a drive motor carried in the tool body;
a driven member coupled to the drive motor, carried by the tool body and operable to apply the implantation force during operation of the drive motor;
a carrier on the driven member configured to couple the fastener to the driven member to transfer the implantation force from the driven member to the fastener the carrier comprising a distal portion wherein the distal portion remains within the tool body during implantation of the fastener; and
a motor control unit carried in the tool body, coupled to the drive motor, and conditioned to operate the drive motor in phases including;
an initial phase operating the carrier to transfer the implantation force to the fastener under conditions that result in only partial implantation of the fastener, with a distal portion of the fastener penetrating tissue such that the distal portion is implanted into the tissue, while a proximal portion of the fastener is retained within the tool body and remains coupled to the carrier,a lull phase commencing at the end of the initial phase interrupting operation of the carrier, anda final phase operating the carrier to release the fastener therefrom and implant the fastener in tissue,wherein after automatically entering the lull phase, the motor control unit requires a final phase command to advance from the lull phase to the final phase.
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Accused Products
Abstract
Systems and methods introduce and deploy prosthesis into a blood vessel or hollow body organ by intra-vascular access. The prosthesis is secured in place by fasteners which are implanted by an applier that is also deployed by intra-vascular access. The applier is configured to permit controlled, selective release of the fastener in a step that is independent of the step of implantation.
309 Citations
18 Claims
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1. A motor-driven tool for applying an implantation force to a helical fastener sized and configured for penetration in tissue comprising:
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a tool body; a drive motor carried in the tool body; a driven member coupled to the drive motor, carried by the tool body and operable to apply the implantation force during operation of the drive motor; a carrier on the driven member configured to couple the fastener to the driven member to transfer the implantation force from the driven member to the fastener the carrier comprising a distal portion wherein the distal portion remains within the tool body during implantation of the fastener; and a motor control unit carried in the tool body, coupled to the drive motor, and conditioned to operate the drive motor in phases including; an initial phase operating the carrier to transfer the implantation force to the fastener under conditions that result in only partial implantation of the fastener, with a distal portion of the fastener penetrating tissue such that the distal portion is implanted into the tissue, while a proximal portion of the fastener is retained within the tool body and remains coupled to the carrier, a lull phase commencing at the end of the initial phase interrupting operation of the carrier, and a final phase operating the carrier to release the fastener therefrom and implant the fastener in tissue, wherein after automatically entering the lull phase, the motor control unit requires a final phase command to advance from the lull phase to the final phase. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16)
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17. A motor-driven tool for applying an implantation force to a helical fastener sized and configured for penetration in tissue comprising:
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a tool body comprising a tubular member comprising internal threads; a drive motor carried in the tool body; a driven member coupled to the drive motor, disposed within the tubular member of the tool body and operable to apply the implantation force during operation of the drive motor; a carrier disposed on the driven member and within the tubular member of the tool body, the carrier configured to couple the fastener to the driven member to transfer the implantation force from the driven member to the fastener, the carrier comprising a distal portion having a configuration that corresponds to a configuration of a proximal end of the fastener wherein the distal portion remains within the tool body during implantation of the fastener; and a motor control unit carried in the tool body, coupled to the drive motor, and conditioned to operate the drive motor in phases including; an initial phase operating the carrier to transfer a partial implantation force to the fastener so that a distal portion of the fastener penetrates tissue and is implanted into the tissue, and a proximal portion of the fastener is retained within the internal threads of the tool body, wherein the proximal end of the fastener engages with the distal portion of the carrier to couple the fastener to the carrier throughout the initial phase, a lull phase commencing at the end of the initial phase interrupting operation of the carrier, and a final phase operating the carrier to release the fastener therefrom and implant the fastener in tissue, wherein after automatically entering the lull phase, the motor control unit requires a final phase command to advance from the lull phase to the final phase. - View Dependent Claims (18)
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Specification