A delivery catheter for delivery, then photo-activation of photo sensitive material has a photo-sensitive substance-delivery part and an activation part. The catheter delivers substances such as biomaterials to a target site, followed by illumination of the target using optics located at the distal
A delivery catheter for delivery, then photo-activation of photo sensitive material has a photo-sensitive substance-delivery part and an activation part. The catheter delivers substances such as biomaterials to a target site, followed by illumination of the target using optics located at the distal tip of the catheter which are optically coupled to an extracorporeal light source. In another aspect a deployable light-delivery catheter is disclosed that can illuminate a large area of tissue.
대표청구항▼
1. A catheter having distal and proximal ends, comprising: an outermost shaft secured to a catheter tip, the tip having an opening;a light member configured as a tube, received over the outermost shaft and disposed adjacent the distal end, wherein the light member is movable relative to the outermos
1. A catheter having distal and proximal ends, comprising: an outermost shaft secured to a catheter tip, the tip having an opening;a light member configured as a tube, received over the outermost shaft and disposed adjacent the distal end, wherein the light member is movable relative to the outermost shaft;a piercing needle at the distal end, disposed within the outermost shaft and coupled to an actuator for displacing the needle through the opening;wherein the light member includes a plurality of fiber optic strands having respective light-emitting ends disposed at the distal end of the tube, the light-emitting ends being arranged to circumscribe a longitudinal axis of the piercing needle;wherein the light member is configured for being displaced beyond the outermost shaft in the longitudinal direction; andwherein the actuator is configured for displacing the needle through the opening while the light member is disposed beyond the outermost shaft in the longitudinal direction. 2. The catheter of claim 1, wherein the needle includes a body having a piercing tip disposed at the distal end and a proximal end configured for being selectively placed in fluid communication with a substance, wherein the body forms a lumen for delivery of the substance from the proximal end to an exit located adjacent to the tip; andthe light member has a proximal end optically coupled to an extracorporeal light source. 3. The catheter of claim 1, wherein the light member is configurable between a deployed and/or stowed position. 4. The catheter of claim 1, wherein the light member is configured to emit light such that a region that surrounds the needle receives direct light from the light member. 5. The catheter of claim 1, wherein the catheter has a longitudinal axis at its distal end, and the light emitting ends are orientated to emit light substantially along the longitudinal axis. 6. The catheter of claim 1, wherein the light emitting ends have a concave lens type. 7. The catheter of claim 1, wherein the light member is positioned beyond the outermost shaft by the tube sliding forwardly towards the tip and over a surface of the outermost shaft wherein the light member moves parallel to the longitudinal axis. 8. The catheter of claim 1, wherein the light member is disposed over the outermost shaft both when the catheter is being delivered to a target location and when the light member is being moved beyond the outermost shaft. 9. The catheter of claim 1, wherein the light member is configured such that the light member is received over the outermost shaft of the catheter prior to and after the light member is disposed beyond the outermost shaft in the longitudinal direction, and while the light member is being moved distally to place it beyond the outermost shaft in the longitudinal direction. 10. A catheter having distal and proximal ends, comprising: an outermost shaft secured to a catheter tip, the tip having an opening;a tubular light member received over the outermost shaft and disposed adjacent the distal end, wherein the light member is movable relative to the outermost shaft;a piercing needle at the distal end, disposed within the outermost shaft and coupled to an actuator for displacing the needle through the opening;wherein the light member includes a plurality of fiber optic strands having respective light-emitting ends disposed at the distal end of the catheter and arranged so as to circumscribe a longitudinal axis of the piercing needle;wherein the light member may be selectively moved closer or further from a tip of the needle by operation of a controller disposed at the proximal end, the controller including a guide for correlating a displacement of the light member relative to the catheter tip to the surface area of tissue receiving direct light when the catheter tip is abutting the tissue surface. 11. The catheter of claim 10, wherein the light member is configured for being displaced beyond the outermost shaft; and wherein the actuator is configured for displacing the needle through the opening while the light member is disposed beyond the outermost shaft. 12. The catheter of claim 10, wherein the light member is disposed over the outermost shaft both when the catheter is being delivered to a target location and when the light member is being moved further or closer to the tip.
연구과제 타임라인
LOADING...
LOADING...
LOADING...
LOADING...
LOADING...
이 특허에 인용된 특허 (19)
Hyde,Gregory Matthew, Catheters and methods of using catheters.
※ AI-Helper는 부적절한 답변을 할 수 있습니다.