Photodynamic bone stabilization systems and methods for reinforcing bone
First Claim
1. A photodynamic bone stabilization system comprising:
- a catheter having an elongated shaft with a distal end releasably engaging an expandable portion, and a longitudinal axis therebetween;
a light-conducting fiber configured to transmit light energy into the expandable portion;
a light-sensitive liquid monomer comprising an initiator within the expandable portion, wherein the initiator is activated when the light-conducting fiber transmits the light energy for polymerization of the light-sensitive liquid monomer; and
a cooling medium configured to control polymerization,wherein the catheter comprises an inner void sufficiently designed to pass the light-sensitive liquid monomer into the expandable portion, and wherein the catheter comprises an inner lumen sufficiently designed to pass the light-conducting fiber into the expandable portion and configured to circulate the cooling medium, andwherein the inner lumen in the expandable portion comprises at least two separate areas configured to expand when a pressurizing medium is delivered to the inner lumen in the expandable portion to cause internal diameter pressure against the light-sensitive liquid monomer during polymerization.
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Accused Products
Abstract
Photodynamic bone stabilization systems are disclosed herein. In an embodiment, a photodynamic bone stabilization system includes a catheter having an elongated shaft with a proximal end adapter, a distal end releasably engaging an expandable portion, and a longitudinal axis therebetween; a light-conducting fiber configured to transmit light energy to the expandable portion; a light-sensitive liquid monomer comprising an initiator, wherein the initiator is activated when the light-conducting fiber transmits the light energy to initiate polymerization of the light-sensitive liquid monomer; and a cooling medium configured to control polymerization temperature, wherein the catheter comprises an inner void sufficiently designed to pass the light-sensitive liquid monomer into the expandable portion, and wherein the catheter comprises an inner lumen sufficiently designed to pass the light-conducting fiber into the expandable portion and configured to circulate the cooling medium.
395 Citations
20 Claims
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1. A photodynamic bone stabilization system comprising:
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a catheter having an elongated shaft with a distal end releasably engaging an expandable portion, and a longitudinal axis therebetween; a light-conducting fiber configured to transmit light energy into the expandable portion; a light-sensitive liquid monomer comprising an initiator within the expandable portion, wherein the initiator is activated when the light-conducting fiber transmits the light energy for polymerization of the light-sensitive liquid monomer; and a cooling medium configured to control polymerization, wherein the catheter comprises an inner void sufficiently designed to pass the light-sensitive liquid monomer into the expandable portion, and wherein the catheter comprises an inner lumen sufficiently designed to pass the light-conducting fiber into the expandable portion and configured to circulate the cooling medium, and wherein the inner lumen in the expandable portion comprises at least two separate areas configured to expand when a pressurizing medium is delivered to the inner lumen in the expandable portion to cause internal diameter pressure against the light-sensitive liquid monomer during polymerization. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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13. A photodynamic bone stabilization system comprising:
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a light-conducting fiber configured to transmit light energy; a light-sensitive liquid monomer comprising an initiator, wherein the initiator is activated when the light-conducting fiber transmits the light energy to initiate polymerization of the light-sensitive liquid monomer; a pressurizing medium configured to control polymerization shrinkage; and a catheter having an elongated shaft, a distal end releasably engaging an expandable portion, and a longitudinal axis therebetween, wherein the catheter comprises an inner void and an inner lumen, wherein the inner void is sufficiently designed to pass the light-sensitive liquid monomer into the expandable portion, wherein the inner lumen is sufficiently designed to pass the light-conducting fiber into the expandable portion, and wherein the inner lumen in the expandable portion comprises at least two separate areas configured to expand when the pressurizing medium is delivered to the inner lumen in the expandable portion so as to cause internal diameter pressure against the light-sensitive liquid monomer contained within the expandable portion during polymerization. - View Dependent Claims (14)
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15. A method comprising:
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inserting an expandable portion of a photodynamic bone stabilization system into an intramedullary canal spanning a bone fracture site comprising a plurality of fractured bone pieces, wherein the photodynamic bone stabilization system comprises; a catheter having a distal end releasably engaging the expandable portion, an inner void, and an inner lumen extending longitudinally within the catheter into the expandable portion, wherein a septum lumen divides the inner lumen into a cooling medium intake lumen and a cooling lumen return lumen; infusing a light-sensitive liquid monomer into the inner void of the catheter so that the light-sensitive liquid monomer expands the expandable portion until the fractured pieces are substantially restored to their natural positions; inserting a light-conducting fiber into the septum lumen of the catheter so that the light-conducting fiber resides in the expandable portion, wherein the light-conducting fiber is configured to transmit light energy to the expandable portion; activating the light-conducting fiber to transmit light energy to the expandable portion to initiate polymerization of the light-sensitive liquid monomer within the expandable portion; delivering a pressurizing medium to the inner lumen of the catheter; infusing a cooling medium into the cooling medium intake lumen of the catheter to control polymerization temperature; and completing the polymerization of the light-sensitive liquid monomer to harden the expandable portion at the bone fracture site, wherein the inner lumen in the expandable portion comprises at least two separate areas configured to expand when the pressurizing medium is delivered to the inner lumen to cause internal diameter pressure against the light-sensitive liquid monomer contained within the expandable portion during polymerization. - View Dependent Claims (16, 17, 18, 19, 20)
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Specification