Needle injection system with backpressure sensing
OwnerBingxi Yan, Anu Prabhathachandran +2inventors
InventorsBingxi Yan, Anu Prabhathachandran, Menachem Peretz, Michael Woodburn
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Abstract
A system for injecting medicament into a target region includes a syringe with a barrel to contain the medicament, a movable plunger within the barrel, and a needle in fluid communication with the barrel that has a tip. The system includes a sensor configured to sense backpressure exerted on the plunger. A controller is then used to determine satisfaction of a needle advancement criteria based on the sensed backpressure. The needle advancement criteria being associated with the tip of the needle extending through target tissue into the target region.
Claims22
A system for injecting medicament into a target region, the system comprising:
- a syringe comprising:
- a barrel configured to contain the medicament;
- a plunger movable within the barrel;
- and
- a needle in fluid communication with the barrel, the needle comprising a tip;
- a sensor configured to sense a backpressure exerted on the plunger;
- and
- a controller configured, when the tip of the needle extends through a target tissue and into the target region, to determine satisfaction of a needle advancement criteria based on the sensed backpressure.
A method of injecting medicament into a target region, the method comprising:
- determining, based on sensed backpressure associated with a back pressure exerted on a plunger of a syringe, that a needle advancement criteria is not satisfied when a tip of a needle of the syringe extends into a target tissue;
- driving, in response to the determination that the needle advancement criteria is not satisfied, the needle into the target tissue until the tip of the needle reaches a target region,
- determining, based on the sensed backpressure exerted on the plunger of the syringe, that the needle advancement criteria is satisfied after the tip of the needle is in the target region;
- stopping, in response to the determination that the needle advancement criteria is satisfied, the driving of the needle;
- and
- injecting the medicament within the target region.
Dependencies are inferred from the claim text.