Enhanced efficacy lung volume reduction devices, methods, and systems
First Claim
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1. A method of treating a lung of a patient, the lung including an airway system having a plurality of branching airways and a damaged portion, the method comprising:
- delivering a self-recovering implant through the airway system in a constrained delivery configuration, the implant having an atraumatic distal end and an atraumatic proximal end and an elongate body defining an implant axis therebetween;
deploying the implant in the airway system from the constrained delivery configuration to an unconstrained deployed configuration so as to locally enhance a gas-filling resistance of the damaged portion of the lung;
wherein the implant is deployed through a delivery catheter, wherein the atraumatic distal end and the atraumatic proximal end inhibit penetration of the implant through a luminal wall surface of the airway system, and wherein the proximal end of the implant is advanced distally relative to the airway system while the delivery catheter is retracted proximally relative to the airway system to enhance a volume of tissue compressed by the implant and to inhibit axial loading between the implant and the airway when the implant laterally compresses lung tissue along a length of the implant.
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Abstract
A lung volume reduction system is disclosed having an implantable device adapted to be delivered to a lung airway of a patient in a delivery configuration and to change to a deployed configuration to bend the lung airway. The invention also discloses a method of bending a lung airway of a patient by inserting a device into the airway in a delivery configuration and bending the device into a deployed configuration, thereby bending the airway.
458 Citations
27 Claims
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1. A method of treating a lung of a patient, the lung including an airway system having a plurality of branching airways and a damaged portion, the method comprising:
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delivering a self-recovering implant through the airway system in a constrained delivery configuration, the implant having an atraumatic distal end and an atraumatic proximal end and an elongate body defining an implant axis therebetween; deploying the implant in the airway system from the constrained delivery configuration to an unconstrained deployed configuration so as to locally enhance a gas-filling resistance of the damaged portion of the lung; wherein the implant is deployed through a delivery catheter, wherein the atraumatic distal end and the atraumatic proximal end inhibit penetration of the implant through a luminal wall surface of the airway system, and wherein the proximal end of the implant is advanced distally relative to the airway system while the delivery catheter is retracted proximally relative to the airway system to enhance a volume of tissue compressed by the implant and to inhibit axial loading between the implant and the airway when the implant laterally compresses lung tissue along a length of the implant. - 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 method of treating lungs of a patient, the lungs including an airway system having a plurality of branching airways, the method comprising:
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providing a plurality of implants having different lengths; sequentially delivering the plurality of implants through the airway system in a constrained delivery configuration, each implant of the plurality of implants having a distal end and a proximal end and an elongate body therebetween; sequentially deploying the plurality of implants of different lengths in the airway system at a plurality of locations, each implant of the plurality of implants deployed from the constrained delivery configuration to an unconstrained deployed configuration so as to laterally compress a portion of a lung tissue disposed between the proximal end and the distal end of the deployed implants; measuring airway lengths at the plurality of locations; and selecting the plurality of implants of different lengths such that a selected length of each respective self-recovering implant is longer than the measured airway length where the implant is to be deployed and wherein the longer length of the implant relative to the length of the associated target airway limits axial loads between the implant and the lung tissue during deployment, wherein the deployed implants provide a near-term measureable increase in lung efficacy such that the increase in lung efficacy may be evaluated during an operation for deploying the plurality of implants, and wherein the distal ends and the proximal ends inhibit penetration of the implants through luminal wall surfaces of the airway system. - View Dependent Claims (20, 21, 22, 23, 24, 25, 26, 27)
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Specification