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. 07, 2011
Filed:
Jun. 17, 2008
Wen-shiang Chen, Taipei, TW;
Hao-li Liu, Tao-Yuan County, TW;
Yen-tung Huang, Taipei County, TW;
Chien-ching MA, Taipei, TW;
Wei-bor Tsai, Taipei, TW;
Wen-pin Shih, Taipei, TW;
Chi-an Dai, Taipei, TW;
Wen-Shiang Chen, Taipei, TW;
Hao-Li Liu, Tao-Yuan County, TW;
Yen-Tung Huang, Taipei County, TW;
Chien-Ching Ma, Taipei, TW;
Wei-Bor Tsai, Taipei, TW;
Wen-Pin Shih, Taipei, TW;
Chi-An Dai, Taipei, TW;
National Taiwan University, Taipei, TW;
Abstract
An artificial sphincter system having: (1) a hollow object, which has the ability of contraction and expansion; (2) a shape memory alloy (SMA), which is connected with the hollow object, changes its shape to imitate the motion of human muscle by applying different electric current; (3) an electric power to provide different amounts of electric current to the shape memory alloy and let it contract or expand to control the motion of the hollow object to imitate the motion of human muscle; and (4) a photo resistor added between the electric power and the shape memory alloy, which senses the brightness of surrounding light and controls A/D (analog-to-digital) values of the electric power to cause different conditions of contraction and expansion of each part of the shape memory alloy.