Intravascular catheter and method of controlling hemorrhage during minimally invasive surgery
First Claim
1. A catheter apparatus for controlling hemorrhage in an enclosed surgical arena, said apparatus comprisinga flexible catheter body configured for travel within a blood vessel extending to the surgical arena by percutaneous insertion or cutdown to access a site in the vessel, said catheter body including an elongated tubular wall having proximal and distal ends, and having at least an inflation lumen and an optical fiber extending between said ends, said fiber being configured for coupling to receive light at the proximal end and guide light to the distal end, and said fiber being configured at said distal end as a beacon which emits said received light through the wall of the vessel as a precise position marker visible externally of the vessel wall for allowing positioning of said catheter distal end in the vessel, anda balloon secured at said distal end of the flexible catheter body and inflatable via said inflation lumen, said balloon being configured for travel with said flexible catheter along the blood vessel, said inflation lumen having a distal opening into said inflatable balloon for providing a fluid flow for rapid inflation and deflation of the balloon, whereby, when precise position of the balloon within a blood vessel is visually confirmed by viewing said beacon, the balloon is disposed for inflation to occlude blood flow and prevent hemorrhage in an identified region of the surgical arena, andmagnetic material secured to said balloon for magnetic engagement and positioning of the balloon by manipulation of a magnet located outside the blood vessel.
2 Assignments
0 Petitions
Accused Products
Abstract
A catheter, for example a balloon or treatment catheter, is positioned to prevent hemorrhage during surgery by inserting the catheter in a deflated configuration along a passage such as a blood vessel near to the operative site in a position determined by direct or video-assisted viewing from outside the passage. In the event a blood vessel is cut during surgery, the previously positioned catheter inflates a balloon to occlude the passage and stop blood flow into the injured site. A flow-directed catheter includes an inflatable balloon attached at its distal end and an optical fiber connected to one or more light emitting regions positioned in the vicinity of the balloon. The light is emitted transversely, and preferably omnidirectionally at one or more points with a sufficient brightness to provide beacons that are readily detected through the walls of a blood vessel and permit a direct determination of the exact location of the balloon within the vessel. Rather than a flow-directed balloon catheter, a drug-delivery or other catheter may be used. In that case the light emitting regions are located at or adjacent to one or more drug delivery ports or other active areas in the catheter.
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Citations
9 Claims
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1. A catheter apparatus for controlling hemorrhage in an enclosed surgical arena, said apparatus comprising
a flexible catheter body configured for travel within a blood vessel extending to the surgical arena by percutaneous insertion or cutdown to access a site in the vessel, said catheter body including an elongated tubular wall having proximal and distal ends, and having at least an inflation lumen and an optical fiber extending between said ends, said fiber being configured for coupling to receive light at the proximal end and guide light to the distal end, and said fiber being configured at said distal end as a beacon which emits said received light through the wall of the vessel as a precise position marker visible externally of the vessel wall for allowing positioning of said catheter distal end in the vessel, and a balloon secured at said distal end of the flexible catheter body and inflatable via said inflation lumen, said balloon being configured for travel with said flexible catheter along the blood vessel, said inflation lumen having a distal opening into said inflatable balloon for providing a fluid flow for rapid inflation and deflation of the balloon, whereby, when precise position of the balloon within a blood vessel is visually confirmed by viewing said beacon, the balloon is disposed for inflation to occlude blood flow and prevent hemorrhage in an identified region of the surgical arena, and magnetic material secured to said balloon for magnetic engagement and positioning of the balloon by manipulation of a magnet located outside the blood vessel.
Specification