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:
Dec. 07, 1993
Filed:
Feb. 11, 1993
Applicant:
Inventors:
Jin Shimada, Falcon Heights, MN (US);
James E Shapland, Shoreview, both, MN (US);
Assignee:
Trancell, Inc., Roseville, MN (US);
Primary Examiner:
Int. Cl.
CPC ...
A61M / ; A61B / ;
U.S. Cl.
CPC ...
604290 ; 604 22 ; 128 241 ; 606 27 ;
Abstract
The present invention provides a method and apparatus for enhancing the diffusion of a substance to a local area of material or tissue by providing ultrasonic energy to the substance and material in two or more distinct frequencies simultaneously. Each of the distinct frequencies of ultrasonic energy is chosen to enhance permeation of the substance through one or more diffusion rate-limiting sections of the material.