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US 12,685,813 B2Granted
Field-chargeable transcutaneous drug delivery system
AssigneeZyno Medical, LLC
InventorsChao Young Lee, Mei Zhang, Zhenhua Mao
Life of this patent
Estimating the term…
Abstract
An automatic needle insertion device assists patients who may be uncomfortable with placing the needle themselves and employs a soft outer needle inserted using a rigid stylet, for example, a standard hypodermic needle, which is then removed after the soft needle is placed, greatly reducing irritation. An ambulatory pump can be filled with a variety of drugs and different amounts of drug on demand, for example, using a syringe prior to use.
Claims18
A transcutaneous drug delivery system, comprising:
- a housing attachable to skin of a patient;
- a syringe coupling supported by and exposed on an exterior of the housing providing a leak-free connection between a syringe and the syringe coupling;
- and
- a hypodermic needle supported by the housing at a first end of the hypodermic needle to fluidly communicate with the syringe coupling to receive a liquid from the syringe when the syringe is coupled to the syringe coupling;
- a reservoir to receive the liquid;
- and
- a cannula assembly including:
- a first opening to receive a second end of the hypodermic needle,
- a second opening coupled to the reservoir, and
- a passage to a soft needle configured to deliver the liquid to the patient.
7 more elements
A transcutaneous drug delivery system, comprising:
- a housing attachable to skin of a patient;
- a syringe coupling supported by the housing providing a leak-free connection between a syringe and the syringe coupling;
- a carriage mechanism configured to slidably move along an insertion path;
- a hypodermic needle supported by the carriage mechanism at a first end of the hypodermic needle to fluidly communicate with the syringe coupling to receive a liquid from the syringe when the syringe is coupled to the syringe coupling;
- a reservoir to receive the liquid from the hypodermic needle prior to inserting the hypodermic needle through the skin of the patient;
- a first compression spring configured to move the carriage mechanism and the hypodermic needle along the insertion path to cause the hypodermic needle to pierce through the skin of the patient;
- a second compression spring exerting a greater force than the first compression spring to move the hypodermic needle along the insertion path out of the skin of the patient;
- and
- a set of catches holding the second compression spring in a compressed state, wherein the set of catches are released by the carriage mechanism when the carriage mechanism is moved along the insertion path by the first compression spring.
6 more elements
Dependencies are inferred from the claim text.