Surgery – Instruments – Light application
Patent
1995-04-20
1997-04-15
Shay, David M.
Surgery
Instruments
Light application
606 3, 606 7, 606 15, 606 17, A61N 506
Patent
active
056204388
ABSTRACT:
A surgical instrument for treating a blood vessel wall following percutaneous transluminal coronary angioplasty (PTCA) includes an optical system for transmitting radiant energy, preferably UV light energy, from a laser source to the distal end portion a PTCA catheter and causing the radiant energy to exit the catheter in a relatively narrow radial band. A microprocessor-controlled stepping motor is used to longitudinally reposition the band along the length of the balloon of the PTCA catheter to thereby expose endothelial tissue spanned by the balloon to radiation for the purpose of inhibiting smooth muscle proliferation reducing incidences of restenosis.
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Amplatz Curtis A.
Porter Christopher H.
Rydell Mark A.
AngioMedics II Incorporated
Shay David M.
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