Multichannel catheter with obturator
First Claim
1. A multichannel catheter useful for delivering extracorporeal blood to a mammal in need thereof by insertion into a blood vessel of the mammal, which catheter has a defined length with distal and proximal ends and comprisesa central, first channel defined by a surrounding wall extending substantially the length of the catheter, which channel is closed at its distal end, wherein the first channel has a noncircular cross section;
- a second channel (i) extending substantially the length of the catheter parallel to the first channel but independent thereof, (ii) being integrated into the wall of the first channel, and (iii) being open at its distal end;
a plurality of openings for the outflow of blood in the wall of the catheter communicating only with said first channel;
an inflatable bladder integrated into the distal end of the catheter between the openings for the outflow of blood and the second channel distal opening;
a third channel (i) extending substantially the length of said catheter integrated into the wall of the first channel;
(ii) being parallel to the first and second channels but independent thereof, and (iii) having a distal opening in fluid communication with the interior of the inflatable bladder; and
an obturator with a flexible shaft slidably engageable into the first channel, wherein the shaft has a noncircular cross section substantially conforming to the noncircular cross section of the first channel, such that, when the shaft is inserted into the first channel, the shaft blocks blood flow through at least a portion of the plurality of openings in the wall of the catheter communicating with the first channel.
7 Assignments
0 Petitions
Accused Products
Abstract
A multichannel catheter for extracorporeal circulation of blood to a patient undergoing cardiovascular treatments or surgery has three independent channels, an obturator and an expandable balloon. The first channel is the largest and is of a size that allows for delivery of blood through outlet parts in the wall of the first channel to a patient in an amount sufficient to maintain the patient'"'"'s metabolism and perfusion throughout the treatment or surgery. The obturator is longitudinally insertable into the first channel. The second and third channels are integrated into the wall of the first channel. The second channel is suitable for delivering a biologically active fluid to the heart and/or venting the left heart. The third channel is suitable for delivering a fluid to the balloon for its expansion. The catheter provides an improved means of preparing for or performing cardiovascular surgery on a patient using a cardiopulmonary machine for extracorporeal circulation of blood.
23 Citations
26 Claims
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1. A multichannel catheter useful for delivering extracorporeal blood to a mammal in need thereof by insertion into a blood vessel of the mammal, which catheter has a defined length with distal and proximal ends and comprises
a central, first channel defined by a surrounding wall extending substantially the length of the catheter, which channel is closed at its distal end, wherein the first channel has a noncircular cross section; -
a second channel (i) extending substantially the length of the catheter parallel to the first channel but independent thereof, (ii) being integrated into the wall of the first channel, and (iii) being open at its distal end; a plurality of openings for the outflow of blood in the wall of the catheter communicating only with said first channel; an inflatable bladder integrated into the distal end of the catheter between the openings for the outflow of blood and the second channel distal opening; a third channel (i) extending substantially the length of said catheter integrated into the wall of the first channel;
(ii) being parallel to the first and second channels but independent thereof, and (iii) having a distal opening in fluid communication with the interior of the inflatable bladder; andan obturator with a flexible shaft slidably engageable into the first channel, wherein the shaft has a noncircular cross section substantially conforming to the noncircular cross section of the first channel, such that, when the shaft is inserted into the first channel, the shaft blocks blood flow through at least a portion of the plurality of openings in the wall of the catheter communicating with the first channel. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 16, 17, 18, 20, 21, 22, 23, 24)
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15. A multichannel catheter useful for extracorporeal circulation of the blood to a patient undergoing cardiovascular surgery, which catheter comprises
at least three independent channels and an expandable balloon at one end of the catheter; -
a first widest channel of a size to permit delivery of an amount of blood to the patient that is sufficient to support the patient metabolism and perfusion throughout the surgery, wherein the first channel has a noncircular cross section, and wherein the first channel has a series of outlet ports along at least a portion of the wall of the first channel; a second channel, narrower than the first channel and integrated into the wall of the first channel, the second channel suitable at least for delivering cardioplegia solution to the heart or for venting the left heart; a third channel also narrower than the first channel and integrated into the wall of the first channel, said third channel suitable for delivery of fluid to the balloon for expansion when positioned in the ascending aorta to occlude the flow of blood, and an obturator with a flexible shaft slidably inserted into the first channel of the catheter and having a handle located at the proximal end of the shaft for slidably positioning the shaft along the length of the first channel to block at least one outlet port, wherein the shaft has a noncircular cross section substantially conforming to the noncircular cross section of the first channel. - View Dependent Claims (19)
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25. A multichannel catheter useful for delivering extracorporeal blood to a mammal in need thereof by insertion into a blood vessel of the mammal, which catheter has a defined length with distal and proximal ends and comprises
a central, first channel defined by a surrounding wall extending substantially the length of the catheter, which channel is closed at its distal end; -
a second channel (i) extending substantially the length of the catheter parallel to the first channel but independent thereof, (ii) being integrated into the wall of the first channel, and (iii) being open at its distal end; a plurality of openings for the outflow of blood in the wall of the catheter communicating only with said first channel, the plurality of openings being configured into two groupings, a first grouping including at least one opening and located on a portion of the first channel immediately proximal to the balloon and a second grouping including at least one opening and located on a portion of the first channel proximal to the first grouping of openings and separated from the first grouping of openings by a portion of the first channel without openings; an inflatable bladder integrated into the distal end of the catheter between the openings for the outflow of blood and the second channel distal opening; a third channel (i) extending substantially the length of said catheter integrated into the wall of the first channel;
(ii) being parallel to the first and second channels but independent thereof, and (iii) having a distal opening in fluid communication with the interior of the inflatable bladder; andan obturator with a flexible shaft slidably engageable into the first channel, wherein, when the shaft is inserted into the first channel, the shaft occludes blood flow through at least the second grouping of openings in the wall of the catheter communicating with the first channel. - View Dependent Claims (26)
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Specification