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Coaxial dual lumen pigtail catheter

a dual-lumen, catheter technology, applied in the direction of catheters, angiography, application, etc., can solve the problems of shortness of breath, loss of flexibility impaired ability of the left ventricle to pump blood out of the heart into the aorta and other arteries, etc., to achieve less distortion of pressure readings

Inactive Publication Date: 2005-09-15
LANGSTON PHIL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

When the aortic valve is stenotic, the ability of the left ventricle to pump blood out of the heart into the aorta and other arteries is impaired.
The body's organs including the brain may then receive an insufficient supply of oxygen rich blood and blood may tend to back-up into the lungs causing shortness of breath.
Ultimately, the left ventricle looses flexibility, tends to dilate and becomes even less efficient at pumping blood into the aorta.
In some cases, the aortic valve becomes so stenotic that blood flow to the brain is dramatically reduced causing syncope.
In addition, aortic stenosis patients often suffer from angina.
The smaller lumen is perforated on one side only and can lead to distorted pressure reading if the perforations impinge on the wall of the aorta as the pressure wave of aortic systole moves past the catheter.
The side-by-side arrangement of the catheter tends to make the catheter less flexible and more difficult to maneuver.
In addition, the durometer of the eight French distal tip is not always soft enough to conform to a guide wire.

Method used

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  • Coaxial dual lumen pigtail catheter
  • Coaxial dual lumen pigtail catheter
  • Coaxial dual lumen pigtail catheter

Examples

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Embodiment Construction

[0014] Referring to FIG. 1, the coaxial dual lumen pigtail catheter 10 (catheter 10) generally includes manifold portion 12, dual lumen portion 14 and single lumen portion 16.

[0015] Manifold portion 12 includes manifold body 18, first connector 20 and second connector 22. As best seen in FIGS. 2 and 4, first connector 20 and second connector 22 are both connected to manifold body 18. First connector 20 is connected to inner lumen 24. Second connector 22 is in fluid communication with outer lumen 26. Thus, manifold body 18 serves to provide for a transition from separate non-coaxial lumens of first connector 20 and second connector 22 to the coaxial lumens that extend through dual lumen portion 14.

[0016] Referring to FIG. 3, as indicated above, dual lumen portion 14 defines inner lumen 24 and outer lumen 26. Inner lumen 24 is defined by inner lumen wall 28. Outer lumen 26 is defined by the space between inner lumen wall 28 and outer lumen wall 30. Preferably, inner lumen wall 28 is...

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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.

Description

FIELD OF THE INVENTION [0001] The present invention relates generally to the field of cardiac catheters. More specifically, the invention relates to cardiac catheters for performing procedures for the testing of aortic stenosis. BACKGROUND OF THE INVENTION [0002] Aortic stenosis is a condition in which the aortic valve has become stenotic (narrowed) and does not open normally. The aortic valve is located between the left ventricle of the heart and the aortic arch. The aortic arch leads to the ascending and descending aorta as well as other major blood vessels and is the main blood vessel that supplies oxygen rich blood to the rest of the body. When the aortic valve is stenotic, the ability of the left ventricle to pump blood out of the heart into the aorta and other arteries is impaired. The body's organs including the brain may then receive an insufficient supply of oxygen rich blood and blood may tend to back-up into the lungs causing shortness of breath. [0003] The aortic valve i...

Claims

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Application Information

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Patent Type & Authority Applications(United States)
IPC IPC(8): A61B5/02A61B5/0215
CPCA61B5/02158A61B5/6857A61B5/0215A61M2025/0031A61M25/005A61M25/007A61M25/0029A61M2025/0039
Inventor LANGSTON, PHIL
Owner LANGSTON PHIL
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