Precision Syringe for Animal Research

Anyone who has delivered an injection to an animal — a retrobulbar block in a cat, an intraocular injection in a research model, a subconjunctival dose in a horse — knows the hardest part isn’t the injection itself. It’s keeping the needle stable while the patient moves.

Standard syringes require two actions at once: stabilizing the needle tip and pushing the plunger. With an animal patient, one hand is often occupied with restraint, positioning, or tissue manipulation. That leaves one hand to do two competing jobs.

The Precision Syringe separates those jobs. The index-finger trigger delivers fluid without transmitting force to the needle tip. The result is one-handed operation with measurably better needle stability.

In the peer-reviewed study (DeLuna et al., 2019, Clinical Ophthalmology), the Precision Syringe produced a 20.9% reduction in forward-retraction needle movement compared to a standard syringe (p=0.04). The mechanism is mechanical: the trigger isolates delivery force from the needle axis, reducing the push-pull movement that occurs with a thumb plunger.

This was measured in a simulated ophthalmic injection model. We have not yet studied the device in veterinary or laboratory settings specifically. The mechanical principle — less needle movement during fluid delivery — applies regardless of the patient, but we want to be clear about what has been measured and what hasn’t.

Ophthalmic procedures in animals. Intravitreal and subconjunctival injections in veterinary ophthalmology face the same physics as human procedures, often in smaller eyes with less cooperative patients. One-handed needle stability matters here.

Micro-volume injection work. When you’re delivering volumes measured in microliters, mechanical consistency in the delivery mechanism matters. The index-finger trigger provides a consistent squeeze-to-deliver motion that doesn’t vary with hand fatigue over a long session.

Compatibility. Standard luer-lock hub. Works with existing needles and cannulas. Nothing new to stock or requisition.

The veterinary and research application is a future option. Our current regulatory and commercial focus is on the human clinical market. We are interested in hearing from veterinarians and researchers who see a fit for the device in their work — those conversations will shape how and when we bring this application to market.