BLOOD DETECTING DEVICE

• US 3,832,993 A
• Filed: 09/13/1972
• Issued: 09/03/1974
• Est. Priority Date: 09/13/1972
• Status: Expired due to Term

• Current Assignee: Wendell V. Clipp
• Original Assignee: Wendell V. Clipp
• Inventors: Clipp, Wendell V.
• Primary Examiner(s): Medbery, Aldrich F.
• Application Number:
  US05/288,501
• Time in Patent Office: 720 Days
• Field of Search: 128/2.1R,2R,340,235,138A 340/235
• US Class Current: 600/371
• CPC Class Codes: A61B 5/02042 Determining blood loss or bleeding, e.g. during a surgical procedure
• CPC Class Codes: A61B 5/026 Measuring blood flow A61B3/1233, A61B3/1241 take precedence
• CPC Class Codes: A61B 5/6824 Arm or wrist

Abstract

A blood detecting device including an elongated, flexible tape member comprising an electrical insulating member supporting a pair of electrical conductors connected to a circuit including a source of electrical energy and an electrically energized signal for application to an area likely to be exposed to the flow of blood, such as the body of a human or animal or to conduits of blood in blood handling apparatus.

Claims

1. A blood detecting device comprising:

a. an elongated, flexible tape member, the length of said tape member being substantially greater than its width, and said tape member being long enough and flexible enough to wrap spirally around the limb of a patient or a blood tube, b. said tape member comprising an elongated, flexible, electrical insulating strip of substantially uniform width, relatively thin, and having opposite faces, c. said tape member further comprising a pair of elongated, flexible, electrical conductor strips of substantially uniform width, of substantially the same length as said insulating strip, and impermeable to fluids, d. adhesive means permanently fixing said conductor strips on the opposite faces of, and longitudinally coextensive with, said insulating strip, so that said conductor strips are spaced opposite each other and are separated only by the thickness of said insulating strip, e. said conductor strips having first longitudinal edges in alignment along the thickness of said insulating strip, and second longitudinal edges in alignment along the thickness of said insulating strip, each of said edges being adjacent and spaced apart a distance not exceeding said thickness, f. electrically energizable signal means connected to said conductor strips, g. means for supplying an electrical voltage across said conductor strips, and h. means for securing said tape member wrapped about the limb of a patient or a blood tube, likely to be exposed to the flow of blood, so that the presence of blood between the aligned longitudinal edges of said conductor strips will short-circuit said conductor strips to energize said signal means.