Pressure-sensing diagnostic catheter

Details Pressure-sensing diagnostic catheter Pressure-sensing diagnostic catheter

1994-02-07

1995-07-11

Kruter, Jerome L.

Surgery

Means for introducing or removing material from body for...

Treating material introduced into or removed from body...

12866204, 12866206, A61M 2900

Patent

active

054316286

ABSTRACT:
The invention relates to catheters having a distally-mounted balloon and pressure sensor and to methods of placing such catheters within physiological vessels. Catheters have a central lumen extending through the catheter and a pressure sensor which lies within the distal portion of the central lumen but does not occlude the lumen. Additionally, catheters may have a Doppler velocity measurement sensor affixed to the distal end of the catheter for measuring fluid velocity distal to the catheter. Inflation of the balloon prevents vessel wall contact with other portions of the catheter tip during flow-directed placement of the catheter. During catheter placement to obtain a wedge pressure, the balloon is inflated until fluid velocity detected with the Doppler sensor is substantially zero.

REFERENCES:
patent: 4274423 (1981-06-01), Mizuno et al.
patent: 4665925 (1987-05-01), Millar
patent: 4722348 (1988-02-01), Ligtenberg
patent: 4733669 (1988-03-01), Segal
patent: 4771782 (1988-09-01), Millar
patent: 4878898 (1989-11-01), Griffin et al.
patent: 4924877 (1990-05-01), Brooks
McDermott, et al. "Monitoring Acute Compartment Pressures with S.T.I.C. Catheter," Clinical Orthopaedics and Related Research, 190:192-198, 1984.

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