Robert B Bidwell

US Patent:

D2559374, Jul 15, 1980

Filed:

Mar 31, 1978

Appl. No.:

5/892468

Inventors:

Leonard D. Kurtz - Woodmere NY
Robert E. Bidwell - Melville NY

Assignee:

Howmedica Inc. - New York NY

International Classification:

D2402

US Classification:

D24 59

US Patent:

D2455382, Aug 23, 1977

Filed:

Sep 8, 1975

Appl. No.:

5/611422

Inventors:

Leonard David Kurtz - Woodmere NY
Robert Bidwell - Melville NY

Assignee:

Deknatel, Inc. - New York NY

International Classification:

D2402

US Classification:

D24 34

US Patent:

41050312, Aug 8, 1978

Filed:

Oct 10, 1975

Appl. No.:

5/621591

Inventors:

Leonard D. Kurtz - Woodmere NY
Robert E. Bidwell - Melville NY

Assignee:

Deknatel, Inc. - Long Island NY

International Classification:

A61M 100

US Classification:

128276

Abstract:

The present invention provides an expansion chamber that can be attached to a conventional underwater drainage device used for draining a body cavity. The attaching means permits the expansion chamber to be quickly attached to the drainage device and when attached to become rigidly and securely connected thereto. The connecting means comprises fitting engageable male and female rails, one of which is connected along its side and extends from the expansion chamber and the other of which is connected along its side and extends from the drainage device. A connecting chamber is rigidly attached at one end thereof to the top of the expansion chamber and extends longitudinally therefrom. Depending from the other end and securely mounted thereto is a hollow needle. The needle can engage and penetrate a self-sealing grommet located in the top of the drainage device. In this manner, the drainage device can be used to maintain the same vacuum within the expansion chamber as within the drainage device.

US Patent:

RE298778, Jan 9, 1979

Filed:

Jun 22, 1977

Appl. No.:

5/808982

Inventors:

Leonard D. Kurtz - Woodmere NY
Robert E. Bidwell - Melville NY

Assignee:

Deknatel Inc. - Queens Village NY

International Classification:

A61F 544

US Classification:

128275

Abstract:

A drainage apparatus for evacuating fluids from cavities including a collection chamber for collecting fluids from the body cavity, a water seal chamber and a pressure regulator chamber. A valve mechanism is provided in the water seal chamber to permit the outflow of gases from the apparatus in the event of a sudden increase in pressure in the device due to respiratory movements or leakage of air.

US Patent:

40182240, Apr 19, 1977

Filed:

Apr 7, 1976

Appl. No.:

5/674482

Inventors:

Leonard D. Kurtz - Woodmere NY
Robert E. Bidwell - Melville NY

Assignee:

Deknatel, Inc. - Long Island NY

International Classification:

A61M 100

US Classification:

128276

Abstract:

The present invention provides an underwater drainage apparatus which is adapted to be used for draining a body cavity. The underwater drainage device is provided with two collection chambers in addition to the usual water seal chamber and pressure regulating monometer. The two collection chambers intercommunicate so that the same vacuum is applied to both chambers but a spill over compartment is provided between the two collection chambers to prevent fluid collected in one chamber from passing into the other collection chamber.

US Patent:

D2502070, Nov 7, 1978

Filed:

Jun 27, 1977

Appl. No.:

5/810579

Inventors:

Leonard D. Kurtz - Woodmere NY
Robert E. Bidwell - Melville NY

Assignee:

Deknatel Inc. - New York NY

International Classification:

D2402

US Classification:

D24 59

US Patent:

43065589, Dec 22, 1981

Filed:

Feb 8, 1980

Appl. No.:

6/119784

Inventors:

Leonard D. Kurtz - Woodmere NY
Robert E. Bidwell - Melville NY

Assignee:

Bioresearch Inc. - Farmingdale NY

International Classification:

A61M 100

US Classification:

128276

Abstract:

A portable liquid collection device is disclosed which is used for draining the pleural cavity or the like. An electric pump and battery means are located inside of a housing. Also located inside of the housing are an adjustable valve and a manually operated emergency pump. A detachable liquid collection chamber is held to the housing by a handle and a latch on the handle. Extending from the pump to the collection chamber through the handle is a vacuum line. When a hose from the pleural cavity is connected to the collection chamber, the electric pump is turned on by a switch and creates a vacuum in the chamber which draws liquids through the hose. If liquid in the chamber rises too high, a float valve in the chamber prevents any liquid from being drawn into the vacuum line.

US Patent:

41129482, Sep 12, 1978

Filed:

May 7, 1976

Appl. No.:

5/684315

Inventors:

Leonard D. Kurtz - Woodmere NY
Robert E. Bidwell - Melville NY

Assignee:

Deknatel, Inc. - Queens Village NY

International Classification:

A61M 100

US Classification:

128276

Abstract:

A surgical drainage system is provided for the drainage of fluid from a body cavity which comprises a collection chamber, a U-tube manometer having one arm in fluid communication with the inlet to the collection chamber and a closed chamber in fluid communication with the other arm of the U-tube manometer. There is provided a rupturable container of liquid within one arm of the U-tube manometer such that when pressure is applied to the container a weakened seal breaks, thus allowing the liquid within the container to flow into the lower connected arms of the U-tube manometer. The U-tube manometer provides a visual indication of changes of pressure in the body cavity by oscillation of the liquid in the manometer. There is further provided a one way valve between the collection chamber and the inlet to the collection chamber. The one way valve permits fluids to flow from the body cavity into the collection chamber but prevents backflow of any higher pressure gas that might exist in the collection chamber.