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. 14, 2021
Filed:
Feb. 04, 2019
Verily Life Sciences Llc, South San Francisco, CA (US);
Adam Reich, Oakland, CA (US);
Verily Life Sciences LLC, South San Francisco, CA (US);
Abstract
A plunger head to measure fluid in a drug cartridge includes a transducer coupled to emit ultrasonic signals, and a power source. A controller is coupled to the transducer and the power source, and the controller includes logic that when executed by the controller causes the plunger head to perform operations. For example the plunger head may emit the ultrasonic signals along a length of the drug cartridge, when the plunger head is disposed in the drug cartridge, and receive the ultrasonic signals after the ultrasonic signals are reflected from a dispensing end of the drug cartridge. The plunger head may then determine when the ultrasonic signals received by the transducer have an absolute value of amplitude greater than a first threshold value, and associate a timestamp with the ultrasonic signals received that have the absolute value of amplitude greater than the first threshold value.