Retroperfusion catheter apparatus and method
First Claim
1. A catheter for a retroperfusing a venous junction defined by a first vein providing normal blood flow into the junction, and a second and third vein each providing normal blood flow away from the junction, the catheter comprising:
- an elongate tube having an axis extending between a proximal end and a distal end;
portions of the tube defining a plurality of channels, including a through-lumen extending from the proximal end through the distal end of the tube;
a first occlusion device disposed in proximity to the distal end of the tube and adapted to at least partially occlude the third vein;
a second occlusion device disposed in proximity to the first occlusion device and adapted to at least partially occlude the second vein with the venous junction disposed between the first occlusion device and the second occlusion device; and
a retroperfusion lumen included in the channels and having an outlet between the first occlusion device and the second occlusion device, the retroperfusion lumen being adapted to receive arterial blood or pharmacological agents under pressure in order to induce retrograde blood flow in the first vein.
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Accused Products
Abstract
A catheter for retroprofusing a venous junction formed by first, second and third veins, includes an elongate tube having a plurality of channels including a through-lumen extending between a proximal end and a distal end. A proximal balloon is inflatable to partially occlude the third vein, while a distal balloon is inflatable to partially occlude the second vein. An operative region of the catheter between the first and second balloons is adapted to pressurize the venous junction with arterial blood to produce retrograde blood flow in the first vein.
322 Citations
12 Claims
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1. A catheter for a retroperfusing a venous junction defined by a first vein providing normal blood flow into the junction, and a second and third vein each providing normal blood flow away from the junction, the catheter comprising:
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an elongate tube having an axis extending between a proximal end and a distal end; portions of the tube defining a plurality of channels, including a through-lumen extending from the proximal end through the distal end of the tube; a first occlusion device disposed in proximity to the distal end of the tube and adapted to at least partially occlude the third vein; a second occlusion device disposed in proximity to the first occlusion device and adapted to at least partially occlude the second vein with the venous junction disposed between the first occlusion device and the second occlusion device; and a retroperfusion lumen included in the channels and having an outlet between the first occlusion device and the second occlusion device, the retroperfusion lumen being adapted to receive arterial blood or pharmacological agents under pressure in order to induce retrograde blood flow in the first vein. - View Dependent Claims (2, 3, 4, 5, 6)
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7. A catheter combination for retroperfusing a venous junction defined by a first vein providing normal blood flow into the junction and a second and third vein each providing normal blood flow away from the junction, comprising:
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an elongate tube having an axis extending between a proximal end and a distal end; portions of the tube defining a plurality of channels including a through-lumen extending from the proximal end of the tube through the distal end of the tube; a first balloon disposed in proximity to the distal end of the tube and adapted to partially occlude the third vein; a second balloon disposed in proximity to the first balloon and adapted to partially occlude the second vein, the first balloon and the second balloon defining an operative region of the tube in proximity to the venous junction; a retroperfusion lumen included among the channels and adapted to provide fluid communication between the proximal end of the tube and the venous junction; and a blood pump providing a flow of arterial blood into the retroperfusion lumen at the proximal end of the tube, the pump having properties for pressurizing the flow of arterial blood at the venous junction so as to produce a retrograde flow of the blood in the first vein. - View Dependent Claims (8, 9)
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10. A method for retroperfusing a venous bed in the brain of a patient, the venous bed communicating with a venous junction defined by a first vein providing antegrade flow into the junction, and second and third veins providing antegrade blood flow away from the junction, the method comprising the steps of:
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introducing into the second vein a catheter having a first balloon and a second balloon defining an operative region of the catheter, and a plurality of channels including a retroperfusion lumen exiting the catheter in the operative region, and an inflation lumen providing fluid communication with at least the first balloon; positioning the catheter with the first balloon disposed in the third vein and the second balloon disposed in the second vein with the operative region of the catheter disposed in proximity to the venous junction; pressurizing the retroperfusion lumen with arterial blood in order to provide an elevated blood pressure at the venous junction sufficient to induce retrograde blood flow in the first vein; and pressurizing the inflation lumen with a fluid to inflate at least the first balloon in order to control the antegrade blood flow from the venous junction. - View Dependent Claims (11, 12)
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Specification