Devices for use in drug delivery systems
Inventors
Kriheli, Marino • TAVOR, Raanan • SHEM-TOV, Eric • DACH, Shlomi
Assignees
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Publication Number
US-11931547-B1
Publication Date
2024-03-19
Expiration Date
Abstract
Some embodiments are directed to a medical device for fluidly connecting to a medical spike, including a spike port configured to receive therein the medical spike and establish fluid communication between the medical spike and the medical device The spike-locking mechanism can be configured to resist extraction of the medical spike from the spike port.
Core Innovation
The invention relates to a medical device for fluidly connecting to a medical spike. The device includes a spike port with a proximal port inlet that receives the medical spike and establishes fluid communication along a port longitudinal axis, and a spike-locking mechanism configured to resist extraction of the medical spike from the spike port.
The spike-locking mechanism includes a spike-locking element having an outer rigid portion and a movable portion extending inwardly from the outer rigid portion towards the port longitudinal axis and away from the proximal port inlet. The movable portion comprises at least one first inwardly projecting element inclined with respect to the port longitudinal axis and having a first distal portion that contacts an outer surface of the medical spike when the spike is located in the spike port.
The movable portion also comprises at least one second projecting element inclined with respect to the port longitudinal axis such that the second element angle is greater than the first element angle, with a second distal edge configured to contact the outer surface of the medical spike. The spike-locking mechanism transitions between an unlocking state and a locking state, and in certain embodiments switches automatically upon initiation of extraction, with increasing extraction force tightening contact at the first element distal portion and further extraction causing the second element distal edge to incise into the outer surface of the medical spike.
Claims Coverage
The independent claim covers two main inventive features: a spike port establishing fluid communication with a medical spike, and a spike-locking mechanism whose geometry and element angles enable extraction resistance via contact tightening and optional incising. Additional claim features refine the switching and engagement behavior, including automatic switching at extraction initiation and defined port/sealing diameter relationships.
Fluidly connecting spike port establishing fluid communication
A spike port having a proximal port inlet configured to receive therethrough the medical spike and establish fluid communication between the medical spike and the medical device, the spike port comprising a port longitudinal axis.
Spike-locking element with outer rigid portion and movable inward portion
A spike-locking mechanism configured to resist extraction of the medical spike from the spike port, the spike-locking mechanism comprising a spike-locking element having an outer rigid portion and a movable portion extending inwardly from the outer rigid portion towards the port longitudinal axis and away from the proximal port inlet.
First inclined inwardly projecting element with first angle contacting spike outer surface
The movable portion comprising at least one first inwardly projecting element inclined with respect to the port longitudinal axis, the at least one first element distal portion contacting an outer surface of the medical spike when located in the spike port.
Second projecting element with greater second angle and distal edge configured to contact spike outer surface
The movable portion comprising at least one second projecting element inclined with respect to the port longitudinal axis, the at least one second element angle being greater than the at least one first element angle, the at least one second element distal edge configured to contact the outer surface of the medical spike.
Extraction-initiation automatic switching from unlocking state to locking state
The spike-locking mechanism automatically activates in response to initiation of extraction of the medical spike from the spike port to lock the spike and resist extraction.
Defined minimal/maximal diameter relationships for port inlet and spike sealing element
The device defines cross-sectional minimal/maximal diameters for the port inlet, spike sealing element, and proximal/distal inner surface portions such that the proximal maximal diameter is greater than both the inlet minimal diameter and sealing minimal diameter, and the distal maximal diameter is greater than the sealing minimal diameter.
Across the independent claim and its refinements, the core inventive coverage centers on a spike port with fluid communication and a geometrically defined spike-locking mechanism. The claim features emphasize extraction-triggered switching between unlocking and locking states, angle-driven tightening contact by the first inclined element, incising by the second distal edge under further extraction force, and explicit minimal/maximal diameter constraints involving the port inlet and spike sealing element.
Stated Advantages
Resists extraction of the medical spike from the spike port.
Locks the spike and resists extraction upon initiation of extraction.
Tightens contact with the spike outer surface to resist extraction when the first element angle increases.
Further resists extraction by configuring the second element distal edge to incise into the outer surface of the medical spike.
Documented Applications
Not explicitly described in patent.
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