US2007129775A1PendingUtilityA1
System and method for generating treatment patterns
Est. expirySep 19, 2025(expired)· nominal 20-yr term from priority
Inventors:David H. MordauntGeorge MarcellinoMichael WiltbergerJustin HendricksonKatrina BellDan Andersen
A61F 2009/00863A61F 9/00821A61B 2018/2272A61B 2018/20359A61F 2009/00878A61F 9/008A61B 2018/2025A61F 9/00823A61B 2018/2035A61F 2009/00897A61B 2018/2266
51
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Claims
Abstract
System and method for generating patterns P of aiming and treatment light on target eye tissue (e.g. the retina) of a patient's eye. The system includes light sources for treatment and aiming light, a scanner for generating patterns of spots of the generated light, a controller, and a graphic user interface that allows the user to select one of several possible spot patterns, adjust the spot density and/or spot size, and apply patterns with fixed or varied density. The patterns can be formed of interlaced sub-patterns and/or scanned without adjacent spots being consecutively formed to reduce localized heating. Partially or fully enclosed exclusion zones within the patterns protect sensitive target tissue from exposure to the light.
Claims
exact text as granted — not AI-modified1 . A photomedical system for treating target tissue, comprising:
a light source for generating a beam of light; a scanner assembly for translating the beam to form a pattern of spots of the light; a focusing element for focusing the pattern of spots on the target tissue; a controller for controlling the scanner assembly; and a graphic user interface connected to the controller that includes a display for displaying a configuration of the pattern of spots and for displaying a plurality of different pattern configurations to choose from for the pattern of spots in response to an activation of the display.
2 . The photomedical system of claim 1 , wherein the display of the graphic user interface is a touch sensitive screen.
3 . The photomedical system of claim 1 , wherein the pattern of spots comprises at least first and second sub-patterns of the spots which are interlaced together to form the pattern of spots.
4 . The photomedical system of claim 3 , wherein the spots in the first sub-pattern have a diameter that is greater than that of the spots in the second sub-pattern.
5 . The photomedical system of claim 3 , wherein the controller causes the scanner assembly to entirely form the first sub-pattern before entirely forming the second sub-pattern.
6 . The photomedical system of claim 5 , wherein the first and second sub-patterns of the spots are the same.
7 . The photomedical system of claim 6 , wherein the first sub-pattern is positionally shifted relative to the second sub-pattern.
8 . The photomedical system of claim 6 , wherein the second sub-pattern is positionally rotated by a predetermined angle relative to the first sub-pattern.
9 . The photomedical system of claim 1 , wherein the scanner assembly forms the spots of light sequentially and in an order that avoids spots adjacent to each other in the pattern from being formed consecutively.
10 . The photomedical system of claim 1 , wherein the pattern is generally round in shape and has a generally constant density of the spots.
11 . The photomedical system of claim 1 , wherein the spots in the pattern are positioned in N concentric circles each having a diameter D defined as:
D ( n )= EZ+S D +( n− 1)× S D (1+Round( DF ))
wherein:
D(n) is the diameter of the nth concentric circle of the pattern with n=1, 2, . . . N,
EZ is a diameter of an exclusion zone in a center of the pattern,
S D is a diameter of the spots, and
Round (DF) is a density factor DF rounded up or down to the nearest whole number.
12 . The photomedical system of claim 11 , wherein each of the n=1, 2, . . . N concentric circles includes a predetermined number(n) of the spots according to:
Number
(
n
)
=
8
×
Round
[
π
×
D
(
n
)
×
1
8
×
1
S
D
×
1
DF
]
wherein Round[ ] means rounding up or down to the nearest whole number.
13 . The photomedical system of claim 1 , wherein the spots in the pattern are positioned in N concentric circles each having a diameter D defined as:
D ( n )= S D +( n− 1)× S D (1+Round( DF ))
wherein:
D(n) is the diameter of the nth concentric circle of the pattern with n=2, 3, . . . N,
S D is a diameter of the spots, and
Round(DF) is a density factor DF rounded up or down to the nearest whole number.
14 . The photomedical system of claim 13 , wherein each of the n=2, 3, . . . N concentric circles includes a predetermined number(n) of the spots according to:
Number
(
n
)
=
8
×
Round
[
π
×
D
(
n
)
×
1
8
×
1
S
D
×
1
DF
]
wherein Round[ ] means rounding up or down to the nearest whole number.
15 . The photomedical system of claim 1 , wherein the spots in the pattern are positioned in arcs of equal angular extent A along N concentric circles each having a diameter D defined as:
D ( n )= EZ+S D +( n− 1)× S D (1+Round( DF ))
wherein:
D(n) is the diameter of the nth concentric circle of the pattern with n=1, 2, . . . N,
EZ is a diameter of an exclusion zone in a center of the pattern,
S D is a diameter of the spots,
Round (DF) is a density factor DF rounded up or down to the nearest whole number, and
A is the angular extent of the arcs and is between 0 and 2π.
16 . The photomedical system of claim 15 , wherein each of the n=1, 2, . . . N concentric arcs includes a predetermined number(n) of the spots according to:
Number
(
n
)
=
8
×
Round
[
π
×
D
(
n
)
×
1
8
×
1
S
D
×
1
DF
×
A
2
π
]
wherein Round[ ] means rounding up or down to the nearest whole number.
17 . The photomedical system of claim 1 , wherein the spots in the pattern are positioned in arcs of equal angular extent A along N concentric circles each having a diameter D defined as:
D ( n )= S D +( n− 1)× S D (1+Round( DF ))
wherein:
D(n) is the diameter of the nth concentric circle of the pattern with n=2, 3, . . . N,
S D is a diameter of the spots,
Round(DF) is a density factor DF rounded up or down to the nearest whole number, and
A is the angular extent of the arcs and is between 0 and 2π.
18 . The photomedical system of claim 17 , wherein each of the n=2, 3, . . . N concentric arcs includes a predetermined number(n) of the spots according to:
Number
(
n
)
=
8
×
Round
[
π
×
D
(
n
)
×
1
8
×
1
S
D
×
1
DF
×
A
2
π
]
wherein Round[ ] means rounding up or down to the nearest whole number.
19 . The photomedical system of claim 1 , wherein the pattern has a density of the spots with the pattern that varies.
20 . The photomedical system of claim 1 , wherein the pattern is an arc pattern, and wherein the controller causes the scanner to automatically scan the arc pattern and additional arc patterns radially outward from the arc pattern.
21 . The photomedical system of claim 1 , wherein the spots have varying diameters in the pattern.
22 . The photomedical system of claim 1 , further comprising:
an aiming light source for generating an aiming beam of aiming light, wherein the scanner assembly is configured for translating the aiming beam to form an enclosed aiming pattern of the aiming light on the target tissue in which the pattern of spots is to be confined.
23 . The photomedical system of claim 1 , further comprising:
an aiming light source for generating an aiming beam of aiming light, wherein the scanner assembly is configured for translating the aiming beam to form an aiming pattern of the aiming light on the target tissue that indicates a center position of the pattern of spots.
24 . The photomedical system of claim 23 , wherein the aiming pattern further indicates an outer boundary in which the pattern of spots is to be confined.
25 . The photomedical system of claim 24 , wherein the aiming pattern comprises two or more crossed lines.
26 . The photomedical system of claim 1 , wherein the pattern of spots defines a partially enclosed exclusion zone on the target tissue in which the spots are not incident.
27 . The photomedical system of claim 1 , wherein the pattern of spots comprises a plurality of arc patterns separated from each other.
28 . A method of treating target tissue, comprising:
selecting a pattern of spots from a plurality of different pattern configurations displayed on a display of a graphic user interface by activating the display; generating a beam of light; translating the beam to form the selected pattern of spots of the light; and focusing the pattern of spots of the light on the target tissue.
29 . The method of claim 28 , wherein the display of the graphic user interface is a touch sensitive screen.
30 . The method of claim 28 , wherein the pattern of spots comprises at least first and second sub-patterns of the spots which are interlaced together to form the pattern of spots.
31 . The method of claim 30 , wherein the spots in the first sub-pattern have a diameter that is greater than that of the spots in the second sub-pattern.
32 . The method of claim 30 , wherein the translating of the beam comprises:
forming the first sub-pattern; and forming the second sub-pattern only after the forming of the first sub-pattern.
33 . The method of claim 32 , wherein the first and second sub-patterns of the spots are the same.
34 . The method of claim 33 , wherein the first sub-pattern is positionally shifted relative to the second sub-pattern.
35 . The method of claim 33 , wherein the second sub-pattern is positionally rotated by a predetermined angle relative to the first sub-pattern.
36 . The method of claim 28 , wherein the translating of the beam results in forming the spots of the light sequentially and in an order that avoids spots adjacent to each other in the pattern from being formed consecutively.
37 . The method of claim 28 , wherein the pattern is generally round in shape and has a generally constant density of the spots.
38 . The method of claim 28 , wherein the spots in the pattern are positioned in N concentric circles each having a diameter D defined as:
D ( n )= EZ+S D +( n− 1)× S D (1+Round( DF ))
wherein:
D(n) is the diameter of the nth concentric circle of the pattern with n=1, 2, . . . N,
EZ is a diameter of an exclusion zone in a center of the pattern,
S D is a diameter of the spots, and
Round (DF) is a density factor DF rounded up or down to the nearest whole number.
39 . The method of claim 38 , wherein each of the n=1, 2, . . . N concentric circles includes a predetermined number(n) of the spots according to:
Number
(
n
)
=
8
×
Round
[
π
×
D
(
n
)
×
1
8
×
1
S
D
×
1
DF
]
wherein Round[ ] means rounding up or down to the nearest whole number.
40 . The method of claim 28 , wherein the spots in the pattern are positioned in N concentric circles each having a diameter D defined as:
D ( n )= S D +( n− 1)× S D (1+Round( DF ))
wherein:
D(n) is the diameter of the nth concentric circle of the pattern with n=2, 3, . . . N,
S D is a diameter of the spots, and
Round(DF) is a density factor DF rounded up or down to the nearest whole number.
41 . The method of claim 40 , wherein each of the n=2, 3, . . . N concentric circles includes a predetermined number(n) of the spots according to:
Number
(
n
)
=
8
×
Round
[
π
×
D
(
n
)
×
1
8
×
1
S
D
×
1
DF
]
wherein Round[ ] means rounding up or down to the nearest whole number.
42 . The method of claim 28 , wherein the spots in the pattern are positioned in concentric arcs of equal angular extent A along N concentric circles each having a diameter D defined as:
D ( n )= EZ+S D +( n− 1)× S D (1+Round( DF ))
wherein:
D(n) is the diameter of the nth concentric circle of the pattern with n=1, 2, . . . N,
EZ is a diameter of an exclusion zone in a center of the pattern,
S D is a diameter of the spots,
Round (DF) is a density factor DF rounded up or down to the nearest whole number, and
A is the angular extent of the arcs and is between 0 and 2π.
43 . The method of claim 42 , wherein each of the n=1, 2, . . . N concentric arcs includes a predetermined number(n) of the spots according to:
Number
(
n
)
=
8
×
Round
[
π
×
D
(
n
)
×
1
8
×
1
S
D
×
1
DF
×
A
2
π
]
wherein Round[ ] means rounding up or down to the nearest whole number.
44 . The method of claim 28 , wherein the spots in the pattern are positioned in concentric arcs of equal angular extent A along N concentric circles each having a diameter D defined as:
D ( n )= S D +( n− 1)× S D (1+Round( DF ))
wherein:
D(n) is the diameter of the nth concentric circle of the pattern with n=2, 3, . . . N,
S D is a diameter of the spots,
Round(DF) is a density factor DF rounded up or down to the nearest whole number, and
A is the angular extent of the arcs and is between 0 and 2π.
45 . The method of claim 44 , wherein each of the n=2, 3, . . . N concentric arcs includes a predetermined number(n) of the spots according to:
Number
(
n
)
=
8
×
Round
[
π
×
D
(
n
)
×
1
8
×
1
S
D
×
1
DF
×
A
2
π
]
wherein Round[ ] means rounding up or down to the nearest whole number.
46 . The method of claim 28 , wherein the pattern has a density of the spots within the pattern that varies.
47 . The method of claim 28 , wherein the pattern is an arc pattern, and wherein the method further comprises:
translating the beam to form additional arc patterns radially outward from the arc pattern; and focusing the additional arc patterns of spots of the light on the target tissue.
48 . The method of claim 28 , wherein the spots have varying diameters in the pattern.
49 . The method of claim 28 , further comprising:
generating an aiming beam of aiming light; translating the aiming beam to form an enclosed aiming pattern of the aiming light on the target tissue in which the pattern of spots is to be confined.
50 . The method of claim 28 , further comprising:
generating an aiming beam of aiming light; and translating the aiming beam to form an aiming pattern of the aiming light on the target tissue that indicates a center position of the pattern of spots.
51 . The method of claim 50 , wherein the aiming pattern further indicates an outer boundary in which the pattern of spots is to be confined.
52 . The method of claim 50 , wherein the aiming pattern comprises two or more crossed lines.
53 . The method of claim 28 , wherein the pattern of spots defines a partially enclosed exclusion zone on the target tissue in which the spots are not incident.
54 . The method of claim 28 , wherein the pattern of spots comprises a plurality of arc patterns separated from each other.Cited by (0)
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