US 12,280,244 B2
Active injection guide
Robert J. Dyer, Cambridge, MA (US); Andrew Coats, Cambridge, MA (US); and Patrick Anquetil, Cambridge, MA (US)
Assigned to Portal Instruments, Inc., Cambridge, MA (US)
Filed by Portal Instruments, Inc., Cambridge, MA (US)
Filed on Nov. 17, 2020, as Appl. No. 17/099,925.
Application 17/099,925 is a continuation of application No. 16/783,428, filed on Feb. 6, 2020, abandoned.
Application 16/783,428 is a continuation of application No. 16/400,290, filed on May 1, 2019, granted, now 11,400,220.
Claims priority of provisional application 62/665,004, filed on May 1, 2018.
Prior Publication US 2021/0069418 A1, Mar. 11, 2021
Int. Cl. A61M 5/30 (2006.01)
CPC A61M 5/30 (2013.01) [A61M 2205/332 (2013.01); A61M 2205/3331 (2013.01); A61M 2205/50 (2013.01); A61M 2205/581 (2013.01); A61M 2205/582 (2013.01); A61M 2205/583 (2013.01)] 20 Claims
OG exemplary drawing
 
1. An active injection guide comprising:
an injector having an injection axis;
a contact surface configured to be placed on a target surface for an injection of an injectate into the target surface from the injector;
a sensor arrangement including sensors from a set of three or more sensors, wherein each of the sensors from the set of three or more sensors has a plurality of load thresholds,
wherein the sensors from the set of three or more sensors are coupled to the contact surface and spaced around the injection axis, wherein each of the sensors from the set of three or more sensors is configured to measure a contact force against the target surface along the injection axis; and
a controller configured
to receive concurrent measurements from the sensors from the set of three or more sensors,
to use the concurrent measurements from the sensors from the set of three or more sensors
to generate an orientation of the injector relative to the target surface and the contact force against the target surface along the injection axis and
to determine, for each of the three or more sensors, whether the contact force on the sensors from the set of three or more sensors is within a
predetermined range that is suitable for the injection, the predetermined range being between the plurality of load thresholds of each sensor from the set of three or more sensors, and
to prevent activation of the injector until the generated orientation and the generated force against the target surface are each within predetermined ranges suitable for the injection,
wherein the injector is a needle-free injector.