Precision low-dose, low-waste syringes and ergonomic attachments therefor

Inventors

Joseph, John H. • Bui, Minh • Peterson, Rod

Assignees

Innomed Technologies Inc

Abstract

Syringe attachments and syringes have particular suitability to the precision dispensing of small amounts of high viscosity materials, such as dermal fillers. Syringes and attachments may include precision position indicators viewed from multiple positions to enable a user to determine plunger position and the amount of dispensed contents with precision. A configuration of the attachment may be slidably secured to a syringe to permit a user to operate the syringe from a lateral position using sliding movement of the thumb and fingers of one hand, for example. This configuration may be particularly suitable for self-administered insulin injections.

Core Innovation

The invention provides a system comprising a syringe and an attachment for precision low-dose dispensing with reduced waste. The syringe includes a syringe body and a plunger, and the syringe body defines an axially extending flat surface and a syringe lumen. The attachment slides on the syringe body and enables axial movement of the plunger relative to the syringe body.

The attachment includes a main body with a plunger engaging end and a guide end that receives the syringe body and supports sliding movement. The system uses a thumb-engaging projection allowing a user to apply force to cause axial movement relative to the syringe body. A viewing window formed in the main body allows the user to view the syringe flat surface, while a pair of guide rails supports sliding movement on the syringe flat surface.

To support controlled positioning of the plunger, the attachment includes a first fastening wall with a recess for receiving and retaining a shaft of the syringe plunger and a second wall arranged to abut a plunger button on the syringe plunger. The documented refinements further provide mechanisms for incremental confirmation and improved readability, including features that interact with raised or recessed gradations and visibility structures tied to small-volume indicia.

Claims Coverage

The partial content explicitly identifies one independent claim (clm-00001). The independent claim includes a set of inventive features combining a sliding thumb-actuated attachment with a viewing window and guide rails aligned to a syringe flat surface and plunger-positioning structures.

Overall, the independent claim coverage focuses on the combination of a syringe with an axially extending flat surface and lumen, and an attachment that slides on the flat surface under user-applied thumb force, while providing a viewing window and guide rails for aligned plunger actuation and positioning through the specified fastening and abutment walls.

Stated Advantages

Documented Applications

No documented applications found