Devices and methods for endovascular electrography
An adapter for an endovascular device and a catheter steering device are provided. The adapter for an endovascular device includes a body, a conductive metal ring and a conductive wire. The body includes a first open end, a second open end, a central lumen having a substantially cylindrical surface extending from the first open end to the second open end, and a channel extending from the central lumen to an external opening. The conductive metal ring is attached to the surface of the central lumen, and the conductive wire is coupled to the conductive metal ring and extends through the channel and the external opening. The steering device for a catheter that has a plurality of lumens with spaced distal openings includes a stylet for disposition within one of the plurality of lumens, and a steering member for disposition within a different one of the plurality of lumens. In the installed position, the stylet and the steering member are connected together at respective distal ends such that a portion of the steering member is disposed outside of the distal end of the catheter.
1. An adapter for an endovascular device, comprising:
a body, including:
a first open end designed to be connected to a luer of a catheter,
a second open end designed to be connected to a fluid source,
a central lumen, having a substantially cylindrical surface, extending from the first open end to the second open end, the substantially cylindrical surface including a recessed portion, and
a channel extending from the central lumen to an external opening;
a conductive metal ring disposed in the recessed portion, the conductive metal ring separated from the catheter by a section of the body when the first open end of the body is connected to the luer of the catheter; and
a conductive wire, including:
a distal end in contact with the conductive metal ring, and
a proximal end extending through the channel at least to the external opening.
2. The adapter according to claim 1 , wherein the channel is sealed on at least one end.
3. The adapter according to claim 2 , wherein the external opening is sealed.
4. The adapter according to claim 2 , wherein the conductive metal ring provides a seal for the channel.
5. The adapter according to claim 1 , further comprising a connector coupled to the proximal end of the conductive wire.
6. The adapter according to claim 5 , wherein the proximal end of the conductive wire extends to the external opening and the connector is attached to the body.
7. The adapter according to claim 5 , wherein the proximal end of the wire extends through the external opening and the connector is spaced from the body.
8. The adapter according to claim 1 , wherein the first open end includes an elastic sealing portion.
9. The adapter according to claim 8 , further comprising a removable cone piece including a first end having an elastic sealing portion with a different diameter than the first open end of the adapter, and a second end to receive the first open end of the body.
10. The adapter according to claim 1 , wherein the second open end has a standard luer shape.
11. The adapter according to claim 1 , wherein the surface of the central lumen is tapered along a longitudinal direction.
12. The adapter according to claim 11 , wherein the surface of the central lumen is cone-shaped and the first open end has a larger inner diameter than the second open end.
13. The adapter according to claim 11 , wherein the surface of the central lumen is cone-shaped and the second open end has a larger inner diameter than the first open end.
14. The adapter according to claim 1 , wherein the channel extends from the central lumen between the first open end and the second open end.
15. The adapter according to claim 1 , wherein the channel extends at an angle from the central lumen.
16. The adapter according to claim 1 , wherein the external opening is on an external surface of the body between the first open end and the second open end.
17. The adapter according to claim 1 , wherein the conductive metal ring terminates prior to the first open end and the second open end.
18. The adapter according to claim 1 , wherein the first open end has an internal diameter less than the central lumen and the second open end has an internal diameter greater than the central lumen.
19. The adapter according to claim 1 , wherein the first open end has a first diameter and the second open end has a second diameter greater than the first diameter, the central lumen adjacent the first open end having a reduced diameter portion with a third diameter less than the first diameter.
20. The adapter according to claim 19 , wherein the central lumen linearly tapers from the first open end to the reduced diameter portion along an entire intervening length.
21. The adapter according to claim 19 , wherein the central lumen reverse tapers from the reduced diameter portion toward the second open end to a constant diameter portion with a fourth diameter greater than the first diameter and less than the second diameter for a length greater than the length of the conductive metal ring, wherein the conductive metal ring is disposed in the constant diameter portion.