Drug Delivery Devices

The drug delivery device addresses bulkiness and sterilization challenges by integrating an on-body sensing system and pneumatic drive for reliable, compact, and economical subcutaneous drug administration, ensuring safety and ease of use for single-use applications.

JP7763849B2Active Publication Date: 2025-11-04SENSILE MEDICAL AG
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Patent Information

Application Number
JP2023556801
Authority / Receiving Office
JP · JP
Patent Type
Patents
Current Assignee / Owner
Priority Date
2021-03-15
Filing Date
2022-03-08
Publication Date
2025-11-04
Estimated Expiration
2042-03-08

AI Technical Summary

Technical Problem

Existing drug delivery devices for subcutaneous administration are often bulky, complex, and difficult to sterilize, posing challenges in reliability, safety, ease of use, and manufacturing costs, with a need for a compact, disposable, and economical solution that ensures sterility and easy activation on the patient's skin.

Method used

A drug delivery device comprising a housing with an on-body sensing system using electrodes to detect skin contact, a disposable unit with a medication container and pump system, and a control unit for reliable and compact administration, incorporating a pneumatic drive mechanism and optical plunger sensing for precise dosing.

Benefits of technology

The device provides safe, reliable, and compact drug delivery, ensuring sterility and ease of use with economical manufacturing, while allowing single-use administration of liquid medications over various time periods, including home use without medical supervision.

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Abstract

A drug delivery device (1) comprising a housing (2), a delivery unit (3) including a drug reservoir (6), and a control unit (4) mounted inside the housing (2), the control unit including an on-body sensing system (5) including an electrode (56) connected to an electronic control system (47) of the control unit for measuring capacitance values ​​configured to detect whether the drug delivery device is positioned against the skin of a patient, the skin-contacting wall (81) of the housing (2) having an inner side facing the inside of the housing on which the delivery unit and the control unit are mounted, and an outer mounting side facing the outside of the housing and intended to be applied against the skin of a patient. The electrode (56) comprises a layer of metal mounted directly against the inner side of the skin-contacting wall.
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