Richard Allison Dewall
Physician at Thornhill Rd, Dayton, OH
License number
Colorado 24807
Issued Date
Apr 8, 1982
Renew Date
May 31, 1989
Expiration Date
May 31, 1989
Type
Physician
Address
Address
421 Thornhill Rd, Dayton, OH 45419
Professional information
Richard Dewall, Dayton OH
Work:
Richard A De Wall
421 Thornhill Rd, Dayton, OH 45419
421 Thornhill Rd, Dayton, OH 45419
Respiratory Gas Assembly For Bubble Oxygenator
US Patent:
4203944, May 20, 1980
Filed:
Jul 13, 1978
Appl. No.:
5/924379
Inventors:
Richard A. DeWall - Dayton OH
International Classification:
A61M 103
US Classification:
422 47
Abstract:
A bubble oxygenator having a generally cubic exterior housing with a gas dispersion system having a one-way valve that prevents the backflow of blood into the oxygen supply. At one end of the oxygenator housing is a generally vertically extending bubble chamber having a movable wall to vary the flow capacity of the oxygenator. Formed separately from the bubble or oxygenating chamber is a generally horizontally extending bubble collection chamber in the top of the cubic housing. The bubble collection chamber is formed by a rectangular envelope shaped, defoaming mesh and filter assembly. A planar temperature controlled ramp receives debubbled blood from the bubble collection chamber and directs it in planar fashion downwardly toward the reservoir.
Medical Drainage Device
US Patent:
3946735, Mar 30, 1976
Filed:
May 13, 1974
Appl. No.:
5/469423
Inventors:
Richard A. DeWall - Dayton OH
International Classification:
A61M 100
US Classification:
128278
Abstract:
A surgical suction system which may be driven in a plurality of different ways. The basic component of the system is an enlarged container having an inlet and an outlet and being formed of a resilient material of the type which restores itself to its original shape following distortion from the original shape. The inlet is connected to apparatus for insertion to an area of a patient to be drained and includes a check valve for allowing fluid to pass into the container through the inlet while precluding substantial backflow. The outlet may be connected to a check valve and/or a regulated vacuum source. The walls of the container include pleated formations so that the same may be compressed to reduce the volume to establish a vacuum therein.
Metabolic Bubble Oxygenator
US Patent:
3994689, Nov 30, 1976
Filed:
Oct 31, 1973
Appl. No.:
5/411332
Inventors:
Richard A. DeWall - Dayton OH
International Classification:
A61M 103
US Classification:
232585B
Abstract:
A bubble oxygenator having a generally cubic exterior housing with a gas dispersion system having a one-way valve that prevents the backflow of blood into the oxygen supply. At one end of the oxygenator housing is a generally vertically extending bubble chamber having a movable wall to vary the flow capacity of the oxygenator. Formed separately from the bubble or oxygenating chamber is a generally horizontally extending bubble collection chamber in the top of the cubic housing. The bubble collection chamber is formed by a rectangular envelope shaped, defoaming mesh and filter assembly. A planar temperature controlled ramp receives debubbled blood from the bubble collection chamber and directs it in planar fashion downwardly toward a reservoir.