RETROGRADE PRESSURE REGULATED INFUSION

• US 20070106258A1
• Filed: 12/11/2006
• Published: 05/10/2007
• Est. Priority Date: 03/12/2003
• Status: Active Grant

• Current Assignee: Gregory Chan, Hongzhi Bai, Jessica Chiu, Mark Bly, Nianjiong Bei, Srinivasan Sridharan, Tom Hatten
• Original Assignee: Gregory Chan, Hongzhi Bai, Jessica Chiu, Mark Bly, Nianjiong Bei, Srinivasan Sridharan, Tom Hatten
• Inventors: Bai, Hongzhi, Sridharan, Srinivasan, Chiu, Jessica, Bei, Nianjiong, Bly, Mark, Chan, Gregory, Hatten, Tom
• Granted Patent: US 8,182,463 B2
• Time in Patent Office: Days
• US Class Current: 604/509
• CPC Class Codes: A61M 2025/1052 for temporarily occluding a vessel for isolating a sector
• CPC Class Codes: A61M 25/10 Balloon catheters A61M25/0125 takes precedence; embolectomy A61B17/22032; retractors A61B17/02; inflatable balloons for placing stents or stent-grafts A61F2/958 ; stomach balloons for treatment of obesity A61F5/0003; oesophagal tubes A61J15/00
• CPC Class Codes: A61M 25/1002 characterised by balloon shape A61M25/1006, A61M25/1009 take precedence

Abstract

A delivery catheter that includes a flexible shaft having a proximal end and a distal end, the distal end having an outer diameter less than about 13 mm; a delivery lumen having a proximal end and a distal end, the delivery lumen within the flexible shaft, the delivery lumen having at least an outlet port or at least one side hole at the distal end of the delivery lumen, the delivery lumen having a cross-sectional area at least about 5 mm²; a pressure monitoring lumen having a proximal end and a distal end, the pressure monitoring lumen within the flexible shaft; a pressure port adjacent to and connected to the distal end of the pressure monitoring lumen; a balloon inflation lumen having a proximal end and a distal end, the balloon inflation lumen within the flexible shaft; a soft tip at the distal end of the flexible shaft; a balloon at the distal end of the flexible shaft, the balloon connected to the distal end of the balloon inflation lumen, the balloon includes at least one of the following materials, polyether block amide resin, polyetheramide, polyurethane, silicone, natural latex, or synthetic latex; wherein the balloon is adapted to inflate to a diameter range of about 4 to about 15 mm.

Claims

1. A method comprising:

positioning a catheter into a blood vessel; and

locally administering a therapeutic agent to the blood vessel in a direction opposite blood flow, the therapeutic agent selected from the group consisting of cells, antibodies against CD18, CD11/18, P-selectin, L-selectin, ICAM, VCAM, and TNF, estrogen and estrogen receptor agonists, growth factors, and their isoforms and downstream signaling mediators, heat shock proteins and their downstream signaling mediators, GIK, adenosine and adenosine receptor agonists, NO donors, Na/H exchange inhibitors, Na/K channel openers and their downstream signaling mediators, Ca channel inhibitors, beta-adrenergic receptor inhibitors, alpha-adrenergic receptor inhibitors, free radical scavengers, anti-oxidants, platelet inhibitors, complement system inhibitors, anti-apoptotic drugs, genes that encode peptides or their ligands, bio-engineered cells or materials that express the peptides or glycoproteins or their ligands, and mixtures thereof;

wherein said agent is administered by the catheter, the catheter comprising;

a shaft comprising a proximal end and a distal end, and defining a delivery lumen through a portion thereof, the delivery lumen comprising a proximal end and a distal end;

a delivery port coupled to the distal end of the delivery lumen;

a pressure monitoring lumen, a portion of the pressure monitoring lumen disposed within the shaft, comprising a proximal end and a distal end;

a pressure port coupled to the distal end of the pressure monitoring lumen;

a balloon inflation lumen, a portion of the balloon inflation lumen disposed within the shaft, comprising a proximal end and a distal end;

a low-pressure high-compliance balloon adjacent to the distal end of the flexible shaft, the balloon comprising at least one material selected from the group consisting of polyether block amide resins, blends of polyether block amide resins, a composite including an elastomeric material and EPTFE, a styrene-isoprene-styrene tri-Block co-polymer, and blends and mixtures thereof;

wherein, prior to administering, inflating the balloon to at least an elasticity of about 40% at a pre-determined gauge pressure of about 0.5 to about 6.0 atmospheres.

2. The method of claim 1, wherein the delivery lumen of the catheter is distal to the pressure monitoring lumen defining at least one of a tapered and a staggered tip, and the delivery lumen is adapted to receive the guidewire.

3. The method of claim 1, wherein

the pressure monitoring lumen of the catheter is distal to the delivery lumen defining at least one of a tapered and a staggered tip, and the pressure monitoring lumen is adapted to receive the guidewire.

4. The method of claim 1, further comprising:

positioning of the balloon of the catheter in one of a coronary sinus and a cardiac vein of a patient; and

monitoring a venous pressure waveform change at a location distal to the balloon.

5. The method of claim 4, further comprising:

inflating the balloon until the venous pressure waveform becomes ventricularized.

6. The method of claim 1, further comprising:

positioning the balloon of the catheter in one of a coronary sinus and a cardiac vein of a patient;

inflating the balloon to occlude the one of the coronary sinus and the cardiac vein; and

introducing the therapeutic agent at a pressure sufficient to increase a diameter of a lumen of the one of the coronary sinus and the coronary vein.

7. A method comprising:

introducing a catheter through a peripheral vein to a cardiac vein;

occluding the cardiac vein by inflating a balloon of the catheter until a venous pressure waveform becomes ventricularized; and

introducing a therapeutic agent in a direction opposite blood flow.

8. The method of claim 7, wherein introducing the therapeutic agent follows occluding of the cardiac vein, the method further comprises:

introducing the therapeutic agent at a location distal to the balloon and at a pressure sufficient to increase a diameter of a lumen of the cardiac vein.

9. The method of claim 7, wherein the therapeutic agent comprises a cellular component.