The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jun. 25, 1991
Filed:
May. 26, 1989
Masataka Tanaka, Togura, JP;
Masao Ohto, Togane, JP;
Tetsuo Sekine, Tokyo, JP;
Hiroshi Takahashi, Tokyo, JP;
Masaru Maruyama, Togura, JP;
Hakko Electric Machine Works Co., Ltd., Nagano, JP;
Abstract
A set of double needles for injecting liquid medicine into a patient through a single injection point contains an inner curved needle slidably and rotatably supported within a shorter outer needle. The distal end of the inner needle can protrude from the outer needle to extend sideways, in a controlled direction and extent. The direction in which the inner needle point is inserted into the patient is determined by controllably rotating and engaging a base of the inner needle with respect to a base of the outer needle, with structure provided to prevent unintentional relative rotation of the needles. Liquid medicine may thus be infused into the body of a patient at a number of locations at a preselected depth into the body and within a zone laterally extending from the distal end of the outer needle. The inner needle, which may have a lateral hole at its end, is withdrawable within the outer needle and straightens within the latter during the course of such a withdrawal. A flexible adaptor is provided between the needles and a supply of liquid medicine.