Catheter
First Claim
1. A catheter for extraction being arranged in the biolumen, having distal end and proximal end and for externally extracting the blood from the distal end, wherein the catheter for extraction is equipped with blood extracting lumen in the inside and equipped with a hub at the proximal end portion, and when the minimum sectional area to the circumferential direction of the blood extracting lumen is referred to as S1 and immersion side length is referred to as L1, an equivalent diameter D1 satisfies the formula defined by D1=(4×
- S1)/L1 and the equivalent diameter D1 is at least 1.80 mm.
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Accused Products
Abstract
The present invention provides a catheter for extraction that can efficiently extract blood flowing in coronary sinus from coronary artery through coronary vein and has the same operability as catheters used in conventional PCI. The present invention also provides a catheter for extracorporeal circulation that can lessen an introduction number of devices for blood access as little as possible and reduce further the burden to a patient, in addition to the same operability as the catheters used in the conventional PCI. The catheter for extraction is equipped with blood extracting lumen in an inside and equipped with a hub at a proximal end portion, and when a minimum sectional area to a circumferential direction of the blood extracting lumen is referred to as S1 and immersion side length is referred to as L1, an equivalent diameter D1 satisfies the formula defined by D1=(4×S1)/L1 and the equivalent diameter D1 is at 1.80 mm. The catheter for extracorporeal circulation also has blood extracting lumen extending from the distal end to the proximal end and blood return lumen extending from the proximal end of the catheter to a fixed length distal end.
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Citations
50 Claims
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1. A catheter for extraction being arranged in the biolumen, having distal end and proximal end and for externally extracting the blood from the distal end, wherein the catheter for extraction is equipped with blood extracting lumen in the inside and equipped with a hub at the proximal end portion, and when the minimum sectional area to the circumferential direction of the blood extracting lumen is referred to as S1 and immersion side length is referred to as L1, an equivalent diameter D1 satisfies the formula defined by D1=(4×
- S1)/L1 and the equivalent diameter D1 is at least 1.80 mm.
- View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24)
- 25. A catheter for extracorporeal circulation having distal end and proximal end, whose distal end is arranged in the coronary sinus of the heart that can hydrate the blood into the body after externally extracting blood from the distal end, wherein the catheter has blood extracting lumen extending from the distal end to the proximal end and blood return lumen extending from the proximal end of the catheter to the fixed length distal end.
- 49. A method of actuating a catheter for extracorporeal circulation, wherein the catheter has distal end and proximal end, the catheter has blood extracting lumen extending from the distal end to the proximal end and blood return lumen extending from the proximal end of the catheter to the fixed length distal end, the blood is extracted from the distal end of the blood extracting lumen arranged in the coronary sinus of patient'"'"'s heart and the blood is returned from the blood extracting lumen arranged in the body of a patient into the body of the patient.
Specification