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:
Apr. 13, 1993
Filed:
Mar. 27, 1992
Naritoshi Kanai, Anjo, JP;
Aisin Seiki Kabushiki Kaisha, Kariya, JP;
Abstract
The present invention is directed to an ultra-aortic balloon pump apparatus which comprises a catheter, a balloon connected to the catheter, a negative pressure source for withdrawing a fluid from the catheter and applying a negative pressure to the balloon through the catheter, and a check valve which is disposed between the catheter and the negative pressure source. The check valve is adapted to allow the fluid flow therethrough from the catheter to the negative pressure source and prevent the fluid from flowing from the negative pressure source to the catheter. The check valve defines therein a pressure chamber communicated with the balloon through the catheter, and which is deformed when the negative pressure is applied to the pressure chamber.