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US 11,305,093 B2Granted
Cannula
AssigneeXenios AG
InventorIvo Simundic
Life of this patent
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Abstract
The invention relates to a cannula comprising a tip and an outlet, the cannula having a reduction in the internal diameter, which reduction is designed as a conically tapering tip the end of which has a length that is shorter than the internal diameter of the adjoining portion of the cannula.
Claims13
An arterial cannula comprising:
- a tip;
- an outlet;
- a first cylindrical cannula section having a first internal diameter from 15 Fr to 19 Fr;
- a second cylindrical cannula section having a second internal diameter from 13 Fr to 17 Fr;
- a diameter reduction section forming a caliber narrowing transition between the first and second cylindrical cannula sections;
- and
- a valve having at least one flap arranged in the diameter reduction section;
- wherein the arterial cannula has an insertion length,
- wherein the diameter reduction section is located 25% to 40% of the insertion length away from the tip of the arterial cannula to enable the arterial cannula to be inserted past a branching area of a blood vessel without blocking blood flow to surrounding branches of the blood vessel.
6 more elements
Dependencies are inferred from the claim text.