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:
Jan. 25, 2022
Filed:
Apr. 06, 2018
Aptar France Sas, Le Neubourg, FR;
Sam Reeves, Bristol, GB;
APTAR FRANCE SAS, Le Neubourg, FR;
Abstract
An automatic fluid injection device having a body fastened to a support. The body containing one or more fluid reservoirs, each containing an injection piston; a needle assembly including an injection needle; and an injection mechanism. The needle assembly including an injection needle and an insertion actuator made of a shape memory alloy. The needle assembly having a retraction ring; a needle support; an insertion ring; a retraction spring; an actuator ring; and an insertion spring. The insertion spring and the retraction spring retained, at rest, in their compressed state, activation of the actuator by heating to about 50% of the available contraction causing the needle support to be released, and activation of the actuator by heating to reach 100% of the available contraction causing the insertion ring and the assembly formed of the needle support and of the injection needle to be released.