Catheter, Fiber Optic, Artery
Sunday, September 03, 2006
A Fiber Optic Artery Catheter has been designed and developed with pneumatically powered angioplasty system using a Fiber Optic cable. The Catheter system consists of an advancer / catheter, a guide wire, a control console, and a power gas source (usually air or nitrogen). The advancer / catheter contains a tiny turbine that drives a helical flexible drive shaft. The drive shaft rotates a catheter tip at speeds of 150,000 to 190,000 rpm. The drive shaft has a Teflon sheath, which protects arterial tissue. The sheath also acts as the saline flush conduit (l0 cc / min). A small knob on the advancer moves the catheter tip. Thousands of microscopic-sized diamond crystals coat the catheter tip's forward face.
The Fiber Optic cable measures the rotational speed of the turbine. A regulator valve modulates the pressure of the gas passing from the control console to the advancer (the gas pressure controls rotational speed of the drive shaft and the catheter tip).
The Catheter system tracks over a steerable 0.009-inch-diameter guide wire fitted with a 0.017-inch-diameter spring tip. The guide wire, the Teflon sheath, and the advancer/catheter are introduced through a small artery (femoral) incision. The design of the small-diameter, triple-helix-wound drive shaft enhances the flexibility of the Catheter system. The Catheter system can operate in arterial passages with a radius of curvature of less than 5mm.
Source: Various Publications
Reference: ‘Rotablator’ (Name of instrument); David Auth
Industrial Products
posted by JD52 @ 12:19 AM,
