Venous insufficiency treatment method
View Patent ↗The method of treating varicose veins and other vascular diseases provides sclerosant fluid through a catheter into the body vessel to be treated. The catheter has a lumen and a plurality of sidewall exits. The sclerosant fluid is provided under sufficient pressure so that it comes out of each exit as a jet of fluid with sufficient velocity to impinge on the vessel wall substantially orthogonal to the wall and thus minimize dilution of the sclerosant fluid and optimize coverage. A movable sheath on the catheter permits selecting a portion of the exits to be uncovered and thus create an infusion zone for the jets of sclerosant fluid which approximately match a desired treatment zone.
1. The method of treating a vascular disease comprising:
inserting into a body vessel a catheter having a lumen, an end hole and a plurality of exits longitudinally disposed along the sidewall of said lumen, said end hole having a proximal opening and a distal opening,
inserting through said catheter an occluding wire having an occluding element having a larger size than the size of said end hole so as to occlude the proximal opening of said end hole, and
delivering a sclerosant fluid into said lumen under pressure to provide jets of said fluid through said exits that impinge on the wall of the body vessel without using an occlusion balloon and while said end hole is occluded by said occluding element to close the body vessel.
2. The method of claim 1 wherein:
said exits are disposed circumferentially along said sidewall; and
said step of delivering includes delivering said fluid along the entire circumference of a predetermined treatment zone of the body vessel.
3. The method of claim 2 wherein said step of delivering includes selecting exits to define an infusion zone which substantially matches a predetermined body vessel treatment zone.
4. The method of claim 2 further comprising the step of: inducing vessel spasm prior to said step of delivering a sclerosant fluid.
5. The method of claim 2 wherein: said step of delivering a sclerosant provides said jets at a substantially uniform velocity.
6. The method of claim 2 wherein said step of inserting into a body vessel a catheter includes inserting a catheter having a plurality of normally closed pressure responsive exits.
7. The method of claim 1 wherein said step of delivering includes delivering jets of said fluid impinging on the wall of the vessel substantially orthogonal to the wall.
8. The method of claim 7 wherein said step of delivering includes selecting exits to define an infusion zone which substantially matches a predetermined body vessel treatment zone.
9. The method of claim 8 wherein said step of inserting into a body vessel a catheter includes inserting a catheter having a plurality of normally closed pressure responsive exits.
10. The method of claim 7 wherein said step of inserting into a body vessel a catheter includes inserting a catheter having a plurality of normally closed pressure responsive exits.
11. The method of claim 1 wherein said step of delivering includes selecting exits to define an infusion zone which substantially matches a predetermined body vessel treatment zone.
12. The method of claim 1 wherein said step of inserting into a body vessel a catheter includes inserting a catheter having a plurality of exits disposed longitudinally along the sidewall of said lumen.
13. The method of claim 1 further comprising the step of: inducing vessel spasm prior to said step of delivering a sclerosant fluid.
14. The method of claim 1 wherein: said step of delivering a sclerosant provides said jets at a substantially uniform velocity.
15. The method of claim 1 wherein: said step of inserting into a body vessel a catheter includes inserting a catheter having a plurality of exits which define an infusion zone encompassed between radiopaque markers.
16. The method of claim 1 wherein said step of inserting through said catheter an occluding wire includes inserting a guide wire having an occluding ball.
17. The method of claim 1 wherein said step of inserting into a body vessel a catheter includes inserting a catheter having a plurality of exits disposed longitudinally and circumferentially along said sidewall.
18. The method of claim 1 wherein said step of inserting into a body vessel a catheter includes inserting a catheter having a plurality of normally closed pressure responsive exits.
19. The method of claim 1 wherein: said step of inserting into a body vessel a catheter includes inserting a sheath over said catheter to substantially block infusion from any exits covered by said sheath.
20. The method of claim 19 wherein: said sheath is positioned after said step of inserting into a body vessel a catheter to uncover a portion of said exits, said portion being the exits through which said step of delivering is effected.
21. The method of claim 19 wherein the step of delivering includes delivering jets of sclerosant fluid along perpendicular lines from said catheter.
22. The method of treating a vascular disease comprising:
inserting into a body vessel a catheter having a lumen, an end hole and a plurality of exits longitudinally disposed along the sidewall of the lumen, said end hole having a proximal opening and a distal opening,
inserting through said catheter an occluding wire having an occluding element having a larger size than the size of said end hole so as to occlude the proximal opening of said end hole,
positioning a sheath over said catheter to uncover all or a portion of said exits, and
delivering a sclerosant fluid into said lumen under pressure to provide jets of said fluid through the uncovered portion of said exits to impinge on the wall of the body vessel substantially orthogonal to the wall vessel without using an occlusion balloon and while said end hole is occluded by said occluding element to close the body vessel.
23. The method of treating a vascular disease comprising:
inserting into a body vessel a catheter having a lumen, an end hole and a plurality of normally closed pressure responsive exits disposed longitudinally and circumferentially along the sidewall of the lumen, said end hole having a proximal opening and a distal opening,
inserting through said catheter an occluding wire having an occluding element having a larger size than the size of said end hole so as to occlude the proximal opening of said end hole,
positioning a sheath over said catheter to uncover all or a portion of said exits, and
delivering a sclerosant fluid into said lumen under pressure to provide jets of said fluid through the uncovered portion of said exits to impinge on the wall of the body vessel substantially orthogonal to the wall vessel without using an occlusion balloon and while said end hole is occluded by said occluding element, the sclerosant fluid being delivered along the entire circumference of a predetermined zone of the body vessel to close the body vessel.
24. The method of claim 23 wherein said step of inserting through said catheter an occluding wire includes inserting an occluding wire having an occluding ball.
25. The method of claim 24 further comprising the step of: inducing vessel spasm prior to said step of delivering a sclerosant fluid.
26. The method of claim 25 wherein: said step of delivering includes the step of opening all of said exposed exits substantially simultaneously at a common pressure.
27. Apparatus for treating a vascular disease comprising:
a body vessel catheter having a lumen, an end hole and a plurality of exits longitudinally disposed along the sidewall of the lumen, said end hole having a proximal opening and a distal opening,
an occluding wire adapted to be inserted through said catheter, said occluding wire having an occluding element having a larger size than the size of said end hole so as to occlude the proximal opening of said end hole,
a delivery device that delivers a sclerosant fluid into said lumen under pressure to pass through said exits as jets which impinge on the wall of the body vessel in which said catheter is deployed without using an occlusion balloon and while said end hole is occluded by said occluding element to close the body vessel.
28. The apparatus of claim 27 wherein said exits are deployed longitudinally and circumferentially along said sidewall.
29. The apparatus of claim 28 wherein said exits are normally closed pressure responsive exits.
30. The apparatus of claim 29 wherein said exits are configured to provide said jets at a substantially uniform velocity.
31. The apparatus of claim 27 wherein said catheter has an end hole opening for a guide wire and said occluding wire includes a guide wire having the occluding element.
32. The apparatus of claim 27 further comprising: a sheath positioned over a portion of said catheter to prevent delivery of said sclerosant from any of said exits covered by said sheath.
33. A method of treating a vascular disease comprising:
inserting into a body vessel a catheter having a lumen, an end hole and a plurality of exits disposed longitudinally along the sidewall of said lumen;
inserting through said catheter an occluding wire that occludes said end hole; and
delivering a sclerosant fluid into said lumen under pressure to provide jets of said fluid through said exits that impinge on the wall of said body vessel without occluding said body vessel and while said endhole is being occluded by said occluding wire to close the body vessel.