Body surface contour deformation

Details Body surface contour deformation Body surface contour deformation

1976-08-02

1978-10-31

Michell, Robert W.

Surgery

Truss

Perineal

A61B 510

Patent

active

041228375

ABSTRACT:
A deformation detector for use with IV needles or catheters inserted into the human body is disclosed. Swelling and deformation attributal to other sources is also detectable. The apparatus in particular has a preferred embodiment which comprises a generally rectangular body enclosing an air chamber. The chamber is rectangular and or one face thereof, a thin diaphragm is attached. The diaphragm is joined by a suitable adhesive to the body adjacent to a IV needle or catheter. In the event of swelling as a result of improper operation of the injection which swelling, while hardly visible to the eye, is detected by conformance of the thin diaphragm adhered to the skin. Swelling or edema from other sources is similarly detectable. Swelling changes the internal air volume of the chamber and thereby forms a pneumatic signal supplied through a tubing to a transducer or recording device. This is used to form a signal.

REFERENCES:
patent: 1561116 (1925-11-01), Silliman
patent: 2199408 (1940-05-01), La Liberte
patent: 2831478 (1958-04-01), Uddenberg et al.
patent: 3704708 (1972-12-01), Iberall
patent: 3853118 (1974-12-01), Schendel
patent: 3867925 (1975-02-01), Ersek

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