Radiopaque Trial Disc, Plate, and Method of Use
Surgical kits comprising a tool having a handle and a shaft affixed to the handle at one end and a free end having a threaded connection, at least two disc inserts, each disc insert comprising a rounded square having an annular wall surrounding a top surface and a bottom surface, wherein a threaded catch is formed in each disc insert to mate with the threaded connection, and wherein the interface between the disc insert top surface and annular wall forms a first perimeter and the interface between the disc insert bottom surface and the annular wall forms a second perimeter. At least a portion of the disc inserts can be radiopaque and a portion can be radiolucent. Also provided are kits having one or more disc inserts and one or more trial plates, each trial plate comprising a plurality of positioning guides.
1 . A kit comprising:
a tool ( 100 ) having a handle ( 102 ) and a shaft ( 104 ) affixed to the handle at one end and a free end ( 105 ) having a threaded connection ( 106 );
at least two disc inserts ( 110 ), each disc insert comprising:
a rounded square having an annular wall ( 111 ) surrounding a top surface ( 112 ) and a bottom surface ( 113 ),
wherein a threaded catch ( 115 ) is formed in each disc insert to mate with the threaded connection ( 106 ), and
wherein the interface between the disc insert top surface and annular wall ( 111 ) forms a first perimeter ( 117 ) and the interface between the disc insert bottom surface and the annular wall ( 111 ) forms a second perimeter ( 119 ).
2 . The kit of claim 1 wherein at least a portion of each of the at least two disc inserts is radiopaque.
3 . The kit of claim 1 wherein at least a portion of each of the at least two disc inserts is radiopaque and at least a portion of each of the at least two disc inserts is radiolucent.
4 . The kit of claim 1 wherein each of the at least two disc inserts is formed of plastic having radiopaque material therein.
5 . The kit of claim 1 wherein each of the at least two disc inserts is coated with a radiopaque material or marker on one or more of the top surface ( 112 ), the bottom surface ( 113 ), the annular wall ( 111 ), the first perimeter ( 117 ), and the second perimeter ( 119 ).
6 . The kit of claim 1 wherein at least two of the disc inserts have different size, shape, or both relative to each other.
7 . A kit comprising:
one or more disc inserts, each disc insert comprising:
a rounded square having an annular wall ( 111 ) surrounding a top surface ( 112 ) and a bottom surface ( 113 ),
wherein the interface between the disc insert top surface and annular wall ( 111 ) forms a first perimeter ( 117 ) and the interface between the disc insert bottom surface and the annular wall ( 111 ) forms a second perimeter ( 119 ), and
wherein the disc insert is at least partially radiopaque, and
one or more trial plates ( 200 ), each trial plate comprising a plurality of positioning guides ( 210 ).
8 . The kit of claim 7 wherein the one or more trial plates is radiopaque.
9 . The kit of claim 7 wherein at least a portion of the one or more trial plates is radiopaque.
10 . The kit of claim 7 wherein at least a portion of the one or more trial plates is radiopaque and at least a portion of the one or more trial plates is radiolucent.
11 . The kit of claim 7 wherein one of the one or more trial plates and one of the one or more disc inserts is more radiopaque than the other.
12 . The kit of claim 7 wherein at least one trial plate comprises radiopaque guide regions ( 212 ) surrounding the plurality of positioning guides ( 210 ).
13 . The kit of claim 7 wherein at least one trial plate comprises radiopaque edge markers ( 214 ) formed at the edges of the trial plate.
14 . The kit of claim 7 wherein at least one trial plate comprises at least one radiolucent region ( 216 ).
15 . The kit of claim 7 wherein the first perimeter, second perimeter, or both perimeters of at least one disc insert is more radiopaque than at least one trial plate ( 200 ).