Device for the treatment of patent ductus arteriosus and method of using the device
First Claim
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1. A method for closing a patent ductus arteriosus of a patient comprising the steps of:
- entering the vascular system of the patient;
advancing a catheter having a heating element associated with a distal end portion through the vascular system of the patient into the ductus arteriosus;
positioning the heating element within the ductus arteriosus at a first position;
energizing the heating element to reduce at least a first portion of the ductus arteriosus;
sensing a predetermined parameter; and
automatically decreasing the size of the heating element when the predetermined parameter reaches a preselected value.
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Abstract
A device and method for treating patent ductus arteriosus in a human. A catheter having a collapsible/expandable heating element at a distal end for entering an infant transcutaneously and being advanced to the ductus arteriosus. A method of heating the inner surface of the ductus arteriosus with the heating element to a temperature sufficient to produce a material change in the collagen of the ductus arteriosus such that the ductus arteriosus passage shrinks to closure.
474 Citations
23 Claims
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1. A method for closing a patent ductus arteriosus of a patient comprising the steps of:
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entering the vascular system of the patient; advancing a catheter having a heating element associated with a distal end portion through the vascular system of the patient into the ductus arteriosus; positioning the heating element within the ductus arteriosus at a first position; energizing the heating element to reduce at least a first portion of the ductus arteriosus; sensing a predetermined parameter; and automatically decreasing the size of the heating element when the predetermined parameter reaches a preselected value.
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2. A method for closing a patent ductus arteriosus of a patient, comprising the steps of:
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entering the vascular system of the patient; advancing a catheter having a heating element associated with a distal end portion through the vascular system of the patient into the ductus arteriosus; positioning the heating element within the ductus arteriosus at a first position; energizing the heating element to reduce at least a first portion of the ductus arteriosus; sensing a predetermined parameter; and automatically changing the shape of the heating element when the predetermined parameter reaches a preselected value.
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3. A method for closing a patent ductus arteriosus of a patient, comprising the steps of:
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entering the vascular system of the patient; advancing a catheter having a heating element associated with a distal end portion through the vascular system of the patient into the ductus arteriosus; positioning the heating element within the ductus arteriosus at a first position; using a biased heating element in conjunction with a retractable sleeve such that when the sleeve is retracted the heating element expands to a predetermined size; and energizing the heating element to reduce at least a first portion of the ductus arteriosus.
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4. A method for closing a patent ductus arteriosus of a patient, comprising the steps of:
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entering the vascular system of the patient; advancing a catheter having a heating element associated with a distal end portion through the vascular system of the patient into the ductus arteriosus; positioning the heating element within the ductus arteriosus at a first position; using a biased heating element in conjunction with a retractable sleeve such that when the sleeve is retracted the heating element assumes a curled configuration; and energizing the heating element to reduce at least a first portion of the ductus arteriosus. - View Dependent Claims (5, 6, 7)
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8. A method for closing a patent ductus arteriosus of a patient, comprising the steps of:
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entering the vascular system of the patient; advancing a catheter having a heating element associated with a distal end portion through the vascular system of the patient into the ductus arteriosus; positioning the heating element within the ductus arteriosus at a first position; energizing the heating element to reduce at least a first portion of the ductus arteriosus; and halting the energizing step if coagulation develops.
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9. A method of closing a patent ductus arteriosus of a patient comprising the steps of:
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entering the vascular system of the patient; advancing a catheter comprising a heating element and moveable sleeve through the vascular system of the patient into the ductus arteriosus; positioning a distal end of the catheter within the ductus arteriosus at a first position; retracting the sleeve to expose the heating element to a first portion of an inside surface of the ductus arteriosus; energizing the heating element with energy to a temperature sufficient to alter the size of the ductus arteriosus such that at least a first portion of a passage through the ductus arteriosus is reduced; withdrawing the heating element to further reduce the passage through the ductus arteriosus with the tip of the heating element; and withdrawing the catheter from the patient. - View Dependent Claims (10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23)
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Specification