Surgery – Means for introducing or removing material from body for... – Treating material introduced into or removed from body...
Reexamination Certificate
2008-05-13
2011-12-27
Sirmons, Kevin C (Department: 3767)
Surgery
Means for introducing or removing material from body for...
Treating material introduced into or removed from body...
Reexamination Certificate
active
08083720
ABSTRACT:
A device, system and method deliver an agent to a soft mass, such as an area of the body, and more specifically the brain. One aspect includes creation of one or more channels, tunnels or grooves in tissue using a relatively small diameter, minimally-invasive stylet and then removing the stylet prior to infusion. The stylet-created channels become paths of increased hydraulic conductivity, through which the infusate will tend to flow and produce a predictable infusion pattern. Infusate will be carried into these channels with relatively low resistance, and then infuse outward from these channels into the surrounding tissue. By carefully positioning these channels, one can control and modify the preferred paths and duration of distribution.
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Email dated Dec. 6, 2008, From Raghu Raghavan to Mark A. Litman, subject: More Prior art for the Channel catheter, 6 pgs.
PCT the International Search Report and The Written Opinion of the International Searching Authority for related PCT patent application serial No. PCT/US2009/02919 mailed on Nov. 9, 2009.
Brady Martin L.
Raghavan Raghu
Ross Chris
Solar Matthew S.
Mark A. Litman & Associates PA
Scott Brandy C
Sirmons Kevin C
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