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:
Jul. 20, 2021
Filed:
Feb. 09, 2020
Min Wei, Carmel, IN (US);
Min Wei, Carmel, IN (US);
Other;
Abstract
A medication injection device comprising a medication container to contain medication; a connector provided with a blocking feature; a push rod having a plurality of teeth disposed along the length, and a spring biasing against the push rod to move proximally. The spring can be compression spring, extension spring, torsion spring, or constant force spring. By enabling or disabling engagement between the blocking feature on the connector and the tooth on the push rod, the push rod is either prevented from moving distally or allowed to move distally. The medication is drawn into the medication container when the push rod moves proximally and the medication is dispensed out of the medication container when the push rod moves distally.