Title:
Discontinuous flow for injection of drug with pressure detection, as well as identification of fluid-filled body space and injection into fluid-filled body space
Document Type and Number:
Japanese Patent JP6349311
Kind Code:
B2
Abstract:
An automatic injection apparatus uses non-continuous fluid-flow of drugs to identify an intended injection site and includes a drive mechanism, a sensor and a controller for establishing fluid flow and pressure and preventing fluid flow until the pressure drops below a predetermined threshold. The pressure threshold is determined based on an internal pressure generated during an injection and more fluid will not flow until it drops below a predetermined pressure. An injection is performed to establish an initial pressure threshhold and then to stop the fluid flow into a patient until the pressure drops below a predetermined pressure which allows fluid flow to resume, thus identifying a fluid filled tissue space. The initial pressure threshold is used as a control parameter to a microprocessor below which controls the rate of injection. Fluid flows below certain pressures are also used to identify a specific location within the body during injections.
Inventors:
Hockman, Mark, N.
Application Number:
JP2015520239A
Publication Date:
June 27, 2018
Filing Date:
June 11, 2013
Export Citation:
Assignee:
Milestone Scientific,Inc.
International Classes:
A61M5/142; A61M5/145; A61M5/168
Domestic Patent References:
| JP2009504316A | ||||
| JP2010506681A |
Attorney, Agent or Firm:
Kazumi Murase