Split dilator aspiration system
A split dilator aspiration system is disclosed. The system includes a catheter, having an elongate, flexible tubular body with a proximal end, a distal end, a side wall defining a central lumen, and a handle on the proximal end. A dilator is advanceable through the central lumen, the dilator having an elongate body, cannulated to receive a guidewire, and an axially extending split along at least a portion of the elongate body, configured to allow removal of a portion of the dilator laterally from the guidewire.
1. A split dilator aspiration system, comprising:
a catheter, having an elongate, flexible tubular body with a proximal end, a distal end, a side wall defining a central lumen, and a handle on the proximal end;
a dilator advanceable through the central lumen, the dilator having:
an elongate body cannulated to receive a guidewire, and
an axially extending split along at least a portion of the elongate body, the split configured to allow removal of a portion of the dilator laterally from the guidewire; and
a clot container on the handle.
2. A split dilator system as in claim 1 , wherein the handle comprises a first engagement surface, and the dilator has a proximal hub with a second engagement surface configured to engage the first engagement surface to releasably secure the dilator within the catheter.
3. A split dilator system as in claim 2 , comprising a retention clip carried by the proximal end of the catheter handle.
4. A split dilator system as in claim 3 , further comprising a retention surface carried by the proximal hub of the dilator.
5. A split dilator system as in claim 4 , wherein the retention surface is on a retention ring configured to engage the retention clip.
6. A split dilator system as in claim 4 , further comprising a release control, for disengaging the proximal hub of the dilator from the catheter handle.
7. A split dilator system as in claim 6 , wherein the release control comprises at least one push button.
8. A split dilator system as in claim 1 , further comprising a hemostasis valve on the handle.
9. A split dilator system as in claim 1 , wherein the split comprises a weakening in a wall of the elongate body to permit the progressive formation of a slit through the wall to allow lateral escape of the guidewire.
10. A split dilator system as in claim 1 , wherein the split comprises a pre formed slit completely through the wall.
11. A split dilator system as in claim 1 , wherein the split extends to a distal endpoint spaced proximally apart from the distal end of the catheter.
12. A split dilator system as in claim 11 , wherein the distal endpoint is spaced proximally apart within the range of from about 5 cm to about 40 cm from the distal end of the catheter.
13. A split dilator system as in claim 1 , further comprising a proximal handle on the dilator.
14. A split dilator system as in claim 13 , wherein the handle comprises a grip body having a first gripping surface and a guidewire exit port configured to direct a guidewire along the first gripping surface.
15. A split dilator system as in claim 14 , wherein the grip body comprises a paddle shape with the first gripping surface on a first side and configured to be held between a thumb and forefinger such that a guidewire can be pinned between the thumb and the first gripping surface.
16. A split dilator system as in claim 15 , further comprising friction enhancing surface structures on the first gripping surface.
17. A split dilator system as in claim 16 , wherein the friction enhancing surface structures comprise a plurality of ridges.
18. A split dilator system, comprising:
a catheter, having an elongate, flexible tubular body with a proximal end, a distal end, a side wall defining a central lumen, and a handle on the proximal end; and
a dilator advanceable through the central lumen, the dilator having:
an elongate body cannulated to receive a guidewire, and
an axially extending split along at least a portion of the elongate body, the split configured to allow removal of a portion of the dilator laterally from the guidewire,
wherein the split extends to a distal endpoint spaced proximally apart from the distal end of the catheter.
19. A split dilator system as in claim 18 , wherein the handle comprises a first engagement surface, and the dilator has a proximal hub with a second engagement surface configured to engage the first engagement surface to releasably secure the dilator within the catheter.
20. A split dilator system as in claim 19 , comprising a retention clip carried by the proximal end of the catheter handle.
21. A split dilator system as in claim 20 , further comprising a retention surface carried by the proximal hub of the dilator.
22. A split dilator system as in claim 21 , wherein the retention surface is on a retention ring configured to engage the retention clip.
23. A split dilator system as in claim 21 , further comprising a release control, for disengaging the proximal hub of the dilator from the catheter handle.
24. A split dilator system as in claim 23 , wherein the release control comprises at least one push button.
25. A split dilator system as in claim 18 , further comprising a hemostasis valve on the handle.
26. A split dilator system as in claim 18 , wherein the split comprises a weakening in a wall of the elongate body to permit the progressive formation of a slit through the wall to allow lateral escape of the guidewire.
27. A split dilator system as in claim 18 , wherein the split comprises a pre formed slit completely through the wall.
28. A split dilator system as in claim 18 , wherein the distal endpoint is spaced proximally apart within the range of from about 5 cm to about 40 cm from the distal end of the catheter.
29. A split dilator system as in claim 18 , further comprising a proximal handle on the dilator.
30. A split dilator system as in claim 29 , wherein the handle comprises a grip body having a first gripping surface and a guidewire exit port configured to direct a guidewire along the first gripping surface.
31. A split dilator system as in claim 30 , wherein the grip body comprises a paddle shape with the first gripping surface on a first side and configured to be held between a thumb and forefinger such that a guidewire can be pinned between the thumb and the first gripping surface.
32. A split dilator system as in claim 31 , further comprising friction enhancing surface structures on the first gripping surface.
33. A split dilator system as in claim 32 , wherein the friction enhancing surface structures comprise a plurality of ridges.
34. A split dilator system, comprising:
a catheter, having an elongate, flexible tubular body with a proximal end, a distal end, a side wall defining a central lumen, and a handle on the proximal end;
a dilator advanceable through the central lumen, the dilator having:
an elongate body cannulated to receive a guidewire, and
an axially extending split along at least a portion of the elongate body, the split configured to allow removal of a portion of the dilator laterally from the guidewire; and
a proximal handle on the dilator, the handle comprising a grip body having a first gripping surface and a guidewire exit port configured to direct a guidewire along the first gripping surface.
35. A split dilator system as in claim 34 , wherein the handle comprises a first engagement surface, and the dilator has a proximal hub with a second engagement surface configured to engage the first engagement surface to releasably secure the dilator within the catheter.
36. A split dilator system as in claim 35 , comprising a retention clip carried by the proximal end of the catheter handle.
37. A split dilator system as in claim 36 , further comprising a retention surface carried by the proximal hub of the dilator.
38. A split dilator system as in claim 37 , wherein the retention surface is on a retention ring configured to engage the retention clip.
39. A split dilator system as in claim 37 , further comprising a release control, for disengaging the proximal hub of the dilator from the catheter handle.
40. A split dilator system as in claim 39 , wherein the release control comprises at least one push button.
41. A split dilator system as in claim 34 , further comprising a hemostasis valve on the handle.
42. A split dilator system as in claim 34 , wherein the split comprises a weakening in a wall of the elongate body to permit the progressive formation of a slit through the wall to allow lateral escape of the guidewire.
43. A split dilator system as in claim 34 , wherein the split comprises a pre formed slit completely through the wall.
44. A split dilator system as in claim 34 , wherein the distal endpoint is spaced proximally apart within the range of from about 5 cm to about 40 cm from the distal end of the catheter.
45. A split dilator system as in claim 34 , wherein the grip body comprises a paddle shape with the first gripping surface on a first side and configured to be held between a thumb and forefinger such that a guidewire can be pinned between the thumb and the first gripping surface.
46. A split dilator system as in claim 45 , further comprising friction enhancing surface structures on the first gripping surface.
47. A split dilator system as in claim 46 , wherein the friction enhancing surface structures comprise a plurality of ridges.