Cannula insertion system
Inventors
Overbeeke, Toon Olaf • Joseph, Brian Robert • KARSSEN, Johannes Gerhard Daniël • Jonker, Arris Cornelis
Assignees
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Publication Number
US-12527503-B2
Publication Date
2026-01-20
Expiration Date
Abstract
A cannula insertion system for inserting a cannula into a human or animal body, includes a cannula and a cannula insertion device to hold and insert the cannula into the human or animal body in an insertion direction. The cannula insertion system includes a safety device configured to retract the cannula or to release the cannula from the cannula insertion device when a force exerted on the cannula in a direction perpendicular
Core Innovation
The invention relates to a cannula insertion system for inserting a cannula into a human or animal body. The system includes a cannula insertion device to hold and insert the cannula in an insertion direction.
A safety device is configured to retract the cannula or to release the cannula from the cannula insertion device in response to a force exerted on a distal portion of the cannula. The force acts perpendicular to the insertion direction and exceeds a first safety threshold value.
The cannula insertion system is further described in terms of force-direction handling relative to the insertion direction. In some configurations, the system includes a sensor and a control device that determine a signal representative of the force exerted on the cannula and release the cannula when the measured force exceeds the corresponding safety threshold value.
The invention also addresses structural safety response mechanisms, including a cannula holder with a releasable coupling or detent mechanism and a cannula retraction device with a linear guide and a biasing element to move the cannula between an insertion position and a retracted position. A blocking device prevents retraction unless threshold conditions are met, and fail-safe behavior during a power outage is described, in which the safety device retracts the cannula or releases it from the cannula insertion device.
Claims Coverage
The provided set includes one independent claim. The inventive features concern a cannula insertion system safety device that triggers cannula retraction or release when forces on a distal portion exceed safety threshold values in directions relative to the insertion direction.
Force-threshold-triggered cannula safety with perpendicular sensing
A cannula insertion system comprising a cannula and a cannula insertion device to hold and insert the cannula in an insertion direction, wherein the safety device retracts the cannula or releases the cannula from the cannula insertion device in response to a force exerted on a distal portion of the cannula in a direction perpendicular to the insertion direction and exceeding a first safety threshold value.
Across the independent claim and the provided dependent-claim summaries, the core coverage is that safety is triggered by exceeding force safety threshold values applied to a distal portion of the cannula, with perpendicular force being the independent trigger, and additional concepts including parallel forces and threshold-dependent retraction/release mechanisms.
Stated Advantages
Provides a safety device that retracts the cannula or releases the cannula from the cannula insertion device when threshold-exceeding forces act on the distal portion.
Documented Applications
Inserting a cannula into a human or animal body.
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