Coaxial dual lumen pigtail catheter
OwnerPhil Langstoninventor
Life of this patent
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Abstract
A coaxial dual lumen pigtail catheter utilizes coaxial construction incorporating a thin wall guiding catheter technology for the outer lumen and using a strong braided diagnostic technology for the central lumen to accommodate high-pressure injections. The catheter includes a manifold body to provide for connection to each of the dual lumens. The distal end of the coaxial dual lumen pigtail catheter tapers to a more flexible portion that is perforated by spiral side holes to provide for more undistorted pressure readings in the left ventricle. The coaxial dual lumen pigtail catheter also utilizes proximal straight sideholes at the end of the dual lumen portion and a taper between the dual lumen portion and the single lumen portion.
Claims1
A cardiac catheter for measuring differential pressure between a left ventricle and an aorta across an aortic valve for diagnosis of aortic stenosis, the catheter comprising:
- a manifold portion including a first connector and a second connector;
- a coaxial dual lumen portion comprising an inner lumen wall defining an inner lumen in operable fluid communication with the first connector and an outer lumen wall defining an annular outer lumen in operable fluid communication with the second connector, and coaxial with the inner lumen, the outer lumen wall being perforated by at least one outer lumen side hole proximate a distal end thereof;
- the single lumen portion in fluid communication with the inner lumen of the dual lumen portion and including at least a first generally straight portion, the single lumen portion being perforated by at least one inner lumen side hole;
- and
- a pigtail portion distal to the first generally straight portion.
Dependencies are inferred from the claim text.