Impact testing apparatuses and methods for drug delivery devices
US11541176B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | May 8, 2017 |
| Grant date | Jan 3, 2023 |
| Priority date | — |
| Expiry date | Apr 8, 2040 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61M2205/332
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
Impact testing apparatuses are disclosed which simulate and measure various impact-related events associated with the operation of a drug delivery device. The impact testing apparatus may include an impactor configured to simulate a plunger rod of the drug delivery device, and a guide sleeve configured to receive a syringe corresponding to the drug delivery device. The syringe may have a proximal end, a distal end defining an outlet, and an interior chamber extending between the proximal and distal ends and carrying a plunger. Additionally, the impact testing apparatus may include an energy source configured to reduce a distance between the impactor and the plunger so that the impactor strikes the plunger. Various sensors may be included to measure characteristics of one or more impacts caused by the impactor. Methods of impact testing a syringe filled with a fluid and carrying a plunger are also disclosed.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.