Method for removably implanting a blood filter in a vein of the human body
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United States of America Patent
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May 16, 1995
Issued Date -
N/A
app pub date -
Mar 9, 1994
filing date -
Jul 17, 1991
priority date (Note) -
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Abstract
A method for removably implanting a blood filter in a vein of the human body makes use of apparatus that includes an elastic guide wire onto which there can be fitted a semi-rigid tubular mandrel (itself fitted into a thin-walled tubular sheath). A catheter is provided in the form of an easily divisible flexible tube whose distal end permanently bears the blood filter, and whose proximal end is intended to receive a locating member which will be confined under the skin of the patient. After temporary implanting of the filter, a removable strengthening cable can be inserted in a removable manner in the catheter in order to displace the filter along the sheath during its positioning in a vein, in particular in the inferior vena cava of a patient. This filter can be easily removed after a certain period, when the risks of pulmonary embolism are no longer feared.
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