1. In a system for providing protection during impact against highway crash barriers of the type comprising horizontally extending rails adapted to be supported along a roadway by attachment to vertical supporting posts anchored in the ground, the improvement comprising: a cladding complex comprising a plurality of planar surfaces arranged in the form of concentric rings adapted to extend along the height of said supporting posts and having their opposed ends terminating in a housing structure which engages opposed sides of each post, the housing structure having an open end to allow it to be attached to said posts, the concentric rings extending outwardly from the post in the direction of the roadway beyond the roadway facing side of the post, the concentric rings each having a thickness that decreases progressively from their ends which attach to the housing to reach a minimum thickness at their central portions which extend from the post in the direction of the roadway.
2. The system of claim 1 further comprising a series of longitudinally spaced protuberances formed along the side of the rails which face the roadway to absorb energy of a vehicle impacting the rail.
3. The system of claim 1 in which the sections of the housing which engage the posts are formed with teeth to achieve better attachment to the posts.
4. The system of claim 1 in which the housing is open at its extremity away from the roadway and is terminated at its outer side by two clamp sections disposed opposite to each other designed to receive an attachment bar joined at its ends to the two clamp sections to support the core on the post supporting the barrier rail.
5. The system of claim 1 in which the concentric rings are formed of a deformable flexible plastic with the ability to reassume their concentric relationship when an impacting force is removed.
6. The system of claim 1 wherein the complex comprises three planar surfaces arranged in the form of concentric rings.
7. The system of claim 1 in which the housing is attached to its supporting post by an adhesive.
The claims below are in addition to those above.
All refrences to claim(s) which appear below refer to the numbering after this setence.
1. A medical electrical lead system configured to be at least partially implanted in a body of a subject, comprising:
a lead body comprising a proximal end and a distal end and a first lumen extending at least partially therebetween;
at least one electrode in the proximity of the distal end of the lead body; and
a reservoir in fluid communication with the first lumen and in the form of a second lumen of the lead body or a protrusion extending from the first lumen of the lead body, wherein the protrusion is configured to be refilled whether the protrusion is implanted in the body of the subject or external to the body of the subject during use,
wherein the reservoir is located at a position removed from the distal end of the lead body.
2. The lead system of claim 1, wherein the lead system is configured to be at least partially implanted in neural tissue of a subject.
3. The lead system of claim 2, wherein the lead system is configured to be at least partially implanted in a brain of a subject.
4. The lead system of claim 1, wherein the reservoir is located in the proximity of the proximal end of the lead body.
5. The lead system of claim 1, wherein the reservoir is configured to be activated by a pump.
6. The lead system of claim 1, wherein the reservoir is in the form of a protrusion extending from the first lumen of the lead body, wherein the protrusion is configured to be refilled whether the protrusion is implanted in the body of the subject or external to the body of the subject during use.
7. The lead system of claim 6, wherein the protrusion extends from the first lumen of the lead body and surrounds a portion of the lead body.
8. The lead system of claim 1, wherein the lead system is configured to allow at least one bioactive agent to passively advance from the reservoir through the first lumen of the lead body.
9. The lead system of claim 1, wherein the lead system is configured for release of at least one bioactive agent therefrom by at least one of diffusion, elution, or effusion.
10. The lead system of claim 1, wherein the reservoir is configured to be secured to a skull of a subject.
11. The lead system of claim 1, further comprising at least one conductor disposed within the lead body.
12. The lead system of claim 11, wherein the at least one conductor is wound around the first lumen.
13. The lead system of claim 12, wherein the at least one conductor is coiled around the first lumen.
14. The lead system of claim 1, wherein the distal end of the lead body is formed of at least one permeable material.
15. The lead system of claim 14, wherein the proximal end of the lead body is formed of at least one substantially impermeable material.
16. The lead system of claim 1, wherein the proximal end of the lead body is formed of at least one substantially impermeable material.
17. The lead system of claim 1, wherein the lead system is configured to be connected to an implantable medical device.
18. The lead system of claim 1, wherein the lead body is integral with the reservoir.
19. The lead system of claim 1, wherein the reservoir is in the form of a second lumen of the lead body.
20. The lead system of claim 19, wherein the reservoir is refillable.
21. The lead system of claim 1, further comprising a valve located between the reservoir and the first lumen.
22. The lead system of claim 21, wherein the valve comprises a check valve.
23. The lead system of claim 1, wherein the reservoir comprises MRI-visible markers.
24. The lead system of claim 1, wherein the reservoir comprises radiopaque markers.