Laser system for improved transbarrier therapeutic radiation delivery
First Claim
1. A therapeutic laser delivery system for the improved transbarrier delivery of laser radiation across a biological barrier layer protecting a treatment site with improved uniformity of dispersion comprising:
- a laser radiation source;
means for painlessly generating a multitude of newly formed micro pores in said biological barrier layer;
means for delivering a bio-compatible, transparent, light-scattering fluid to said treatment site;
means for optically connecting said laser radiation source to said newly formed micro pores; and
wherein said newly formed micro pores provide access to said treatment site for radiation from said laser radiation source.
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Accused Products
Abstract
The present invention describes a system and method to improve radiation delivery through a barrier that may be encountered during therapeutic laser procedures, particularly where the objective of treatment is to produce thermal damage or alterations to subsurface tissue constituents without destroying or altering the overlying barrier. To achieve this result, a bio-compatible fluid is preoperatively administered to the tissue. The bio-compatible fluid is a light-scattering fluid that will scatter light primarily at the desired site thereby achieving a more uniform, enhanced heating over a relatively large treatment area. In addition, a second fluid, a dispersion fluid, can be added to the tissue to function in distributing the light scattering fluid throughout the treatment site. Laser radiation is then administered, through micro pores created for example by a device such as a micro-needle patch, into the treatment site. When a micro-needle patch is employed to deliver the fluid and the radiation, it can be a single patch for both functions, or a separate patch for each function.
154 Citations
18 Claims
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1. A therapeutic laser delivery system for the improved transbarrier delivery of laser radiation across a biological barrier layer protecting a treatment site with improved uniformity of dispersion comprising:
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a laser radiation source;
means for painlessly generating a multitude of newly formed micro pores in said biological barrier layer;
means for delivering a bio-compatible, transparent, light-scattering fluid to said treatment site;
means for optically connecting said laser radiation source to said newly formed micro pores; and
wherein said newly formed micro pores provide access to said treatment site for radiation from said laser radiation source. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A method for improving the delivery of laser radiation for transbarrier therapeutic treatments comprising the steps of:
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applying a micro poration technique to painlessly create a multitude of newly formed micro pores in a biological barrier protecting a treatment site;
injecting a bio-compatible, light-scattering fluid, capable of dispersing therapeutic radiation, through said multitude of newly formed micro pores into a tissue around said treatment site;
delivering said therapeutic radiation from a source to said treatment site through a suitable means and said multitude of newly formed micro pores; and
scattering said therapeutic radiation at said treatment site to promote improved uniformity and enhanced density of said radiation at said treatment site. - View Dependent Claims (12, 13, 14, 15, 16, 17, 18)
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Specification