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US 2017/0248134 A1Published application
Low-force pumping segment
AssigneeCareFusion 303, Inc.
InventorsLisa DAVIS, Robert Dwaine BUTTERFIELD
Life of this patent
Estimating the term…
Abstract
A pumping segment having a low shut-off force is disclosed. The pumping segment includes a tube having an interior surface with at least two notches on opposite sides of the interior surface.
Claims20
A pumping segment with a low shut-off force, the pumping segment comprising:
- a medical-grade tube for delivering medical fluid, the tube comprising an interior surface comprising a first notch and a second notch on opposite sides of the interior surface such that the first and second notches divide a wall of the tube into a first wall region and a second wall region and divide the interior surface into a first interior surface and a second interior surface respectively forming interior surfaces of the first wall region and the second wall region;
- and
- a magnetic coupling element attached to a first exterior surface of the first wall region of the tube between the first and second notches, the first exterior surface separated from the first interior surface by a thicknesses of the first wall region, and the magnetic coupling element configured to magnetically couple to a pumping mechanism and be pulled by the pumping mechanism for separating the first and second wall regions of the tube.
An intravenous (IV) set with a low shut-off force, the IV set comprising:
- a medical-grade tube for delivering medical fluid, the tube having a tube wall comprising an interior surface comprising a first notch and a second notch on opposite sides of the interior surface, each notch comprising a tip, the first and second notches dividing the tube wall into first and second portions;
- and
- a magnetic coupling element attached directly to a first exterior surface of the first portion of the tube wall between the notches, the first exterior surface separated from a first interior surface of the first portion by a thicknesses of the first portion, and the magnetic coupling element configured to magnetically couple to a pumping mechanism and be pulled by the pumping mechanism for separating the first and second portions of the tube wall.
A medical-grade tube, comprising:
- a pumping segment having an exterior surface;
- a first magnetic coupling element attached to a first portion of the exterior surface;
- and
- a second magnetic coupling element attached to a second portion of the exterior surface, the first and second magnetic coupling elements configured to magnetically couple to a pumping mechanism and be drawn apart by the pumping mechanism for separating the first and second portions of the tube.
1 more element
Dependencies are inferred from the claim text.