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US 6,648,860 B2Granted
Contrast delivery syringe with internal hydrophilic surface treatment for the prevention of bubble adhesion
AssigneeLiebel-Flarsheim Company
InventorsPeter Staats, William E. Bausmith, III
Life of this patent
Estimating the term…
Abstract
A syringe for injecting a fluid, such as a contrast medium for radiological diagnostic imaging, is enhanced by hydrophilic treatment of interior surfaces of the syringe, reducing air bubble attachment to the syringe. Air bubbles that do form or that are drawn into the syringe fail to attach to, or readily release from, the interior surface and can be expelled prior to being used on a patient.
Claims10
A method of reducing air bubbles in syringes used to inject fluids into the body of animals, comprising:
- hydrophilic surface treating an interior surface of a syringe barrel adapted to contain a fluid without the addition of a coating;
- and
- assembling a syringe by inserting a plunger into the syringe barrel,
- wherein when a fluid is contained in the syringe barrel, the fluid will be in direct contact with the interior surface.
1 more element
A syringe assembly for injecting a fluid into the body of an animal, comprising:
- a hollow cylindrical syringe barrel adapted to contain a fluid and including an open rearward end, a forward end having a discharge opening, and an uncoated intervening hydrophilic interior surface;
- and
- a plunger inserted in the open rearward end,
- wherein when a fluid is contained in the syringe barrel, the fluid will be in direct contact with the interior surface.
1 more element
Dependencies are inferred from the claim text.