Infusion filter and method for performing thrombolysis
OwnerStanley Batisteinventor
Life of this patent
Estimating the term…
Abstract
An infusion filter design combines a fluid infusion device and a blood filtration device that filter blood during a thrombolysis procedure while allowing for complete filter removal on procedure completion. In one embodiment, a wire comprises a proximal, non-infusible length that extends partially outside of the patient and within the vein. The wire further comprises an infusible length distally from the non-infusible length that is extends within the vein so as to be placed at the section of the vein requiring medication. The wire also comprises a distal filter component at a distal end of the wire that is employed to filter the blood in the event that during the period that clot is dissolved it migrates toward the central circulation.
Claims18
A method for performing venous thrombolysis comprising:
- deploying a guidewire within a blood vessel from an upstream side of a blood clot so that a distal end of the guidewire reaches a downstream side of the blood clot;
- inserting a catheter over the guidewire;
- removing the guidewire while the catheter is in place;
- deploying an infusion filter through the catheter, the infusion filter comprising:
- a non-infusible length wire extending from a proximal end of the infusion filter, the non-infusible length comprising a lumen extending therethrough;
- an infusible length wire extending distally from the non-infusible length wire, the infusible length wire comprising a lumen extending therethrough and a permeable wall;
- and
- a filter portion extending from the infusible length wire, the filter portion comprising residual stresses, surface tensions, or both that cause the filter portion to form a predetermined shape when deployed in a blood vessel;
- positioning the infusion filter such that the infusible length wire is adjacent to the blood clot and the filter portion is disposed downstream from the blood clot;
- removing the catheter with infusion filter in place;
- dispensing medication into the blood vessel through the permeable wall for a predetermined treatment period;
- and
- removing the infusion filter from the patient.
A method for performing venous thrombolysis comprising:
- deploying a guidewire within a blood vessel from an upstream side of a blood clot so that a distal end of the guidewire reaches a downstream side of the blood clot;
- inserting a catheter, having a proximal end and a distal end, over the guidewire, the catheter having a non-infusion portion and an infusion portion near the distal end, the infusion portion configured with a permeable wall;
- removing the guidewire while the catheter is in place;
- deploying a filter through the catheter, the filter comprising:
- a filter wire having a proximal end and a distal end;
- and
- a filter portion at the distal end of the filter wire, the filter portion comprising residual stresses, surface tensions, or both that cause the filter portion to form a predetermined shape when deployed in a blood vessel;
- positioning the filter portion adjacent to and downstream from the blood clot;
- and
- dispensing medication into the catheter which flows into the blood vessel through the permeable wall.
A method for performing venous thrombolysis comprising:
- inserting a catheter having a proximal end and a distal end, into a blood vessel having a blood clot, the catheter having a non-infusion portion and an infusion portion, at or near the distal end, that has a permeable wall;
- deploying a filter through the catheter, the filter comprising:
- a filter wire having a proximal end and a distal end;
- and
- a filter portion at the distal end of the filter wire, the filter portion comprising residual stresses, surface tensions, or both that cause the filter portion to form a predetermined shape when deployed in the blood vessel from the distal end of the catheter;
- positioning the filter portion adjacent to and downstream from the blood clot and outside of the catheter to allow the filter portion to form the predetermined shape;
- and
- dispensing medication into the catheter which flows through the catheter and into the blood vessel through the permeable wall of the catheter.
Dependencies are inferred from the claim text.