Catheter with clear needle shaft
AssigneeCritikon, Inc.
InventorAnthony Van Heugten
Life of this patent
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Abstract
This invention relates to a novel needle for expeditiously determining proper insertion of the needle into a patient. A transparent shaft is positioned behind the tip of the needle. Upon insertion of the needle into the vein of a patient, blood is observed in the transparent shaft of the needle. Preferably, the shaft is formed of polyurethane or polycarbonate the needle can be used with an over-the-needle catheter.
Claims12
A surgical device for insertion into a body cavity of a patient comprising:
- a hollow needle, said needle having a sharpened metal tip portion and a shaft portion positioned behind said tip portion, said shaft portion being transparent,
- wherein said tip portion pierces said patient to insert said needle into said patient and blood flows from said patient into said shaft portion so that blood can be observed in said shaft portion of said needle.
A method for determining proper insertion of a surgical device into a patient comprising the steps of:
- inserting a sharpened metal tip of a needle into said patient, said needle having a transparent shaft portion positioned behind said tip, and
- observing blood in said transparent shaft portion upon insertion of said tip into said patient.
A surgical device for insertion into a body cavity of a patient comprising:
- a hollow needle, said needle having a sharpened metal tip portion and a shaft portion positioned behind said tip portion, said shaft portion being transparent,
- a catheter concentric with said needle, said tip portion extending from said catheter,
- wherein said tip portion pierces said patient to insert said catheter into said patient and blood flows from said patient into said shaft portion so that blood can be observed in said shaft portion of said needle.
Dependencies are inferred from the claim text.