Method to sense the tissue for injection from a hypodermic needl

Details Method to sense the tissue for injection from a hypodermic needl Method to sense the tissue for injection from a hypodermic needl

1992-07-22

1993-12-21

Hindenburg, Max

Surgery

Truss

Pad

607116, A61B 505

Patent

active

052714136

ABSTRACT:
Many pharmaceuticals require a specific tissue for injection, such as adipose or muscle, to optimize the effect of the drug. This is important to achieve the desired bioavailability of the injected substance. In some cases, intravenous injections are desired over subcutaneous and intramuscular. The invention is a bioimpedance method and apparatus for sensing a hypodermic needle's transition from subcutaneous adipose to muscle tissue. The invention could also be used to sense a vascular transition. The sensing can be integrated into instrumentation that identifies the tissue or simply signals that the transition has occurred. The physician or nurse could then confidently inject the medication into the intended tissue.

REFERENCES:
patent: 4515168 (1985-05-01), Chester et al.
patent: 4690152 (1987-09-01), Juncosa
patent: 4805621 (1989-02-01), Heinze et al.
patent: 4823797 (1989-04-01), Heinze et al.
patent: 4836214 (1989-06-01), Sramek
patent: 4883053 (1989-11-01), Simon
patent: 5080104 (1992-01-01), Marks et al.

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