Dual-lumen catheter-connecting system
DCFirst Claim
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1. A dual-lumen catheter assembly comprising:
- a dual-lumen catheter having a distal end and a proximal end,flow diversion means having one end fastened to the proximal end of said catheter, anda pair of flexible extension tubes each having one end fastened to the opposite end of said flow diversion means from said catheter, each of said extension tubes being bent back toward the distal end of said catheter to form a bend having a predetermined shape, each bend being adapted to flex and deform from said predetermined shape in response to an external force and being adapted to return to said predetermined shape in response to removal of said external force.
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Abstract
A dual-lumen catheter assembly comprising a dual-lumen catheter, a Y connector having one end fastened to the proximal end of the catheter, and a pair of extension tubes each having one end fastened to the opposite end of the connector from the catheter, each of the extension tubes being bent back toward the distal end of the catheter, extending along opposite sides of the connector.
355 Citations
53 Claims
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1. A dual-lumen catheter assembly comprising:
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a dual-lumen catheter having a distal end and a proximal end, flow diversion means having one end fastened to the proximal end of said catheter, and a pair of flexible extension tubes each having one end fastened to the opposite end of said flow diversion means from said catheter, each of said extension tubes being bent back toward the distal end of said catheter to form a bend having a predetermined shape, each bend being adapted to flex and deform from said predetermined shape in response to an external force and being adapted to return to said predetermined shape in response to removal of said external force. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A blood treatment system comprising
a dual-lumen catheter having a distal end and a proximal end, flow diversion means having one end fastened to the proximal end of said catheter, a pair of flexible extension tubes each having one end fastened to the opposite end of said flow diversion means from said catheter, each of said extension tubes being bent back toward the distal end of said catheter to form a bend having a predetermined shape, each bend being adapted to flex and deform from said predetermined shape in response to an external force and being adapted to return to said predetermined shape in response to removal of said external force, a blood treatment unit for receiving blood withdrawn from a patient through one of the lumens of said catheter, purifying the withdrawn blood, and returning the purified blood to the patient through the other lumen of said catheter, a pair of flexible tubes connecting said extension tubes to said blood treatment unit, flow control means for controlling the flow of blood between said catheter and said blood treatment unit, and coupling means for coupling the proximal ends of said extension tubes to said flexible tubes.
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21. A method of preparing a patient for extracorporeal blood treatment comprising the steps of inserting into a vein selected from the group consisting of the jugular, subclavian and femoral veins of the patient, the distal end portion of a dual-lumen catheter assembly having
flow diversion means having one end fastened to the proximal end of said catheter, a pair of flexible extension tubes each having one end fastened to the opposite end of said flow diversion means from said catheter, each of said extension tubes being bent back toward the distal end of said catheter and extending alongside said flow diversion means to form a bend having a predetermined shape, each bend being adapted to flex and deform from said predetermined shape in response to an external force and being adapted to return to said predetermined shape in response to removal of said external force, flow control means for controlling the flow of blood between said dual-lumen catheter and an extracorporeal blood treatment unit, and coupling means for coupling said extension tubes to said blood treatment unit, and taping said flow diversion means and extension tubes to the skin of the patient.
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34. A dual-lumen catheter assembly comprising
a dual-lumen catheter, and connecting means attached to the proximal end of said catheter and forming a pair of internal passageways which communicate at one end thereof with the dual lumens in said catheter, said passageways curving back toward the distal end of said catheter so that forces exerted on said connecting means at the other ends of said passageways will tend to move said catheter in a direction opposite that of said exerted forces.
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38. A blood treatment system comprising
a dual-lumen catheter, connecting means attached to the proximal end of said catheter and forming a pair of internal passageways which communicate at one end thereof with the dual lumens in said catheter, said passageways curving back toward the distal end of said catheter so that forces exerted on said connecting means at the other ends of said passageways will tend to move said catheter in a direction opposite that of said exerted forces, a blood treatment unit for receiving blood withdrawn from a patient through one of the lumens of said catheter, purifying the withdrawn blood, and returning the purified blood to the patient through the other lumen of said catheter, and a pair of flexible tubes connecting said extension tubes to said blood treatment unit.
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42. A method of preparing a patient for extracorporeal blood treatment comprising the steps of
inserting into a vein selected from the group consisting of the jugular, subclavian and femoral veins of the patient, the distal end portion of a dual-lumen catheter having connecting means attached to the proximal end of said catheter and forming a pair of internal passageways which communicate at one end thereof with the dual lumens in said catheter, said passageways curving back toward the distal end of said catheter so that forces exerted on said connecting means at the other ends of said passageways will tend to move said catheter in a direction opposite that of said exerted forces, and taping said connector and extension tubes to the skin of the patient.
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47. The method of claim 47 wherein said extension tubes, including said bends, are flexible.
Specification