Temporary peripheral blood filtration methods to reduce or prevent post-surgery related cognitive dysfunction
OwnerRichard J. Melkerinventor
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Abstract
Methods are disclosed and exemplified in which a temporary intravascular filter is inserted into a vessel to trap emboli that may be released during or after a surgical procedure. Such filtering removes emboli in order to reduce or eliminate post-surgical cognitive dysfunction. In particular, the methods are directed to dealing with surgeries conducted on the limbs, and filtering in a vein that returns blood from the limb undergoing surgery. More particularly, the methods are directed to filtration during a surgery on a limb in which blood flow is restricted to the surgical field, in which cases a greater quantity of emboli are expected to be generated as a result of the surgical procedure.
Claims7
A method for reducing or preventing post-surgical cognitive dysfunction in a patient undergoing a surgical procedure, comprising:
- a. inserting an expandable temporary filter into a vein leading from a site of said surgical procedure;
- b. expanding said temporary filter at a point in said vein to catch emboli;
- and
- c. removing said filter to remove said emboli,
- wherein the removing of said emboli in said filter reduces or prevents the occurrence of post-surgical cognitive dysfunction.
A method for reducing or preventing post-surgical cognitive dysfunction in a patient undergoing a surgical procedure, comprising:
- a. inserting an expandable temporary filter into a vein leading from a site of said surgical procedure;
- b. initiating a restricting of blood flow to said site during said surgical procedure;
- c. expanding said temporary filter at a point in said vein to catch emboli;
- d. ending said restricting of blood flow, wherein blood retained due to said restricting, containing a quantity of emboli, passes through said filter in said vein and emboli are captured by said filter, and
- e. removing said filter to remove said emboli,
- wherein the removing of said emboli in said filter reduces or prevents the occurrence of post-surgical cognitive dysfunction.
Dependencies are inferred from the claim text.