Needle safety systems

US11446110B2 · kind B2 · utility

Assignee

• Hemotek Medical Incorporated · US

Inventors

• Patrick ROUSCHE · Healdsburg, US
• Peter TEK · Orland Park, US
• Charles VENTURA · Cary, US
• Richard A. SCRIBNER · Shingle Springs, US
• Andrew Black · London, GB
• Andrew R. Leopold · Hawthorn Woods, US
• Mark Carlson · Arlington Heights, US
• Todd MACY · Powell, US
• Daniel Lane · Riverside, US
• Adam D. Hensel · Cincinnati, US
• Edward P. Browka · Chapel Hill, US

Key dates

• Filing date: Jun 20, 2019
• Grant date: Sep 20, 2022
• Expiry date: Jul 11, 2040

Classification

• Technology area (CPC A): Human Necessities
• CPC primary: A61M2005/1588
• WIPO field: Medical technology
• WIPO sector: Instruments

Abstract

Tissue access devices and methods of using the same are disclosed. The devices can have a sensor configured to occlude a flow path by deflecting a membrane into the flow path when the devices become dislodged from tissue. The sensor can be configured to partially or fully occlude the flow path. The sensor can have a spring. The spring can be biased to move the sensor from a sensor first configuration to a sensor second configuration when a force applied by the sensor first surface against a non-sensor surface changes from a first force to a second force less than the first force. The membrane can be deflected into the flow path when the sensor is in the sensor second configuration.