Claims Analysis
Total Claims: 69
Claim 1
Independent Claim
250 words
A mixing assembly for mixing bone cement, said mixing assembly comprising: a housing having at least one interior wall; a lid removably attachable to said housing and movable between an open position where the bone cement can be added to said housing and a sealed position where said lid is hermetically sealed to said housing to define a sealed mixing chamber between said lid and said interior wall of said housing for mixing the bone cement; a handle having a portion extending through said lid and being rotatable about said lid for mixing the bone cement; a mixing paddle operatively coupled to said portion of said handle for rotating with said portion wherein said mixing paddle is movable between an extended position when said lid is in said open position and a retracted position where said mixing paddle is adapted to scrape the bone cement from said interior wall when said lid is in said sealed position; and a resilient member disposed between said portion and said mixing paddle, said resilient member normally-biasing said mixing paddle into said extended position and said resilient member compressing in response to contact between said mixing paddle and said interior wall as said lid is moved from said open position to said sealed position thereby permitting said mixing paddle to retract into said retracted position such that said lid can be hermetically sealed to said housing in said sealed position, yet said mixing paddle can still scrape the bone cement from said interior wall.
Claim 2
Dependent Claim
250 words
A mixing assembly for mixing bone cement, said mixing assembly comprising: a housing having at least one interior wall; a lid removably attachable to said housing and movable between an open position where the bone cement can be added to said housing and a sealed position where said lid is hermetically sealed to said housing to define a sealed mixing chamber between said lid and said interior wall of said housing for mixing the bone cement; a handle having a portion extending through said lid and being rotatable about said lid for mixing the bone cement; a mixing paddle operatively coupled to said portion of said handle for rotating with said portion wherein said mixing paddle is movable between an extended position when said lid is in said open position and a retracted position where said mixing paddle is adapted to scrape the bone cement from said interior wall when said lid is in said sealed position; and a resilient member disposed between said portion and said mixing paddle, said resilient member normally-biasing said mixing paddle into said extended position and said resilient member compressing in response to contact between said mixing paddle and said interior wall as said lid is moved from said open position to said sealed position thereby permitting said mixing paddle to retract into said retracted position such that said lid can be hermetically sealed to said housing in said sealed position, yet said mixing paddle can still scrape the bone cement from said interior wall.
Claim 3
Dependent Claim
51 words
A mixing assembly as set forth in claim 1 wherein said mixing paddle includes a first end and a second end wherein said first end is adjacent said lid and is operatively coupled to said portion of said handle and said second end is adjacent said housing opposite said first end.
Claim 4
Dependent Claim
23 words
A mixing assembly as set forth in claim 2 further comprising an annular flange disposed about said mixing paddle at said first end.
Claim 5
Dependent Claim
45 words
A mixing assembly as set forth in claim 3 further comprising at least one hole defined within said annular flange with said portion of said handle extending into said at least one hole to operatively couple said mixing paddle to said portion of said handle.
Claim 6
Dependent Claim
44 words
A mixing assembly as set forth in claim 4 wherein said at least one hole is further defined as first and second holes defined with said annular flange wherein said first hole is defined within said annular flange 180° apart from said second hole.
Claim 7
Dependent Claim
78 words
A mixing assembly as set forth in claim 5 wherein said portion of said handle includes a first set of tabs extending away from said handle with one of said tabs extending into said first hole to engage said annular flange at said first hole and the other of said tabs extending into said second hole to engage said annular flange at said second hole for operatively coupling said first mixing paddle to said portion of said handle.
Claim 8
Dependent Claim
27 words
A mixing assembly as set forth in claim 2 further comprising a post extending from said first end of said mixing paddle away from said second end.
Claim 9
Dependent Claim
43 words
A mixing assembly as set forth in claim 7 wherein said portion of said handle includes a socket extending away from said handle to receive said post of said mixing paddle for operatively coupling said mixing paddle to said portion of said handle.
Claim 10
Dependent Claim
27 words
A mixing assembly as set forth in claim 8 wherein said post of said mixing paddle and said socket of said portion of said handle are rectangular.
Claim 11
Dependent Claim
24 words
A mixing assembly as set forth in claim 8 wherein said portion of said handle further includes a centering post disposed within said socket.
Claim 12
Dependent Claim
37 words
A mixing assembly as set forth in claim 10 wherein said resilient member is disposed about said centering post, within said socket, and between said portion of said handle and said first end of said mixing paddle.
Claim 13
Dependent Claim
21 words
A mixing assembly as set forth in claim 2 wherein said mixing paddle is rotatable about a fixed axis of rotation.
Claim 14
Dependent Claim
49 words
A mixing assembly as set forth in claim 12 further comprising a depression defined within said housing and aligned with said fixed axis of rotation for receiving said second end of said mixing paddle for maintaining said fixed axis of rotation and for stabilizing said mixing paddle during rotation.
Claim 15
Dependent Claim
28 words
A mixing assembly as set forth in claim 1 further comprising a sleeve defined within and extending entirely through said lid for supporting said portion of said handle.
Claim 16
Dependent Claim
24 words
A mixing assembly as set forth in claim 14 wherein said portion of said handle extends through said sleeve to extend through said lid.
Claim 17
Dependent Claim
55 words
A mixing assembly as set forth in claim 15 wherein said mixing paddle includes a first end and a second end wherein said first end is adjacent said lid and is operatively coupled to said portion of said handle extending through said sleeve and said second end is adjacent said housing opposite said first end.
Claim 18
Dependent Claim
23 words
A mixing assembly as set forth in claim 16 further comprising an annular flange disposed about said mixing paddle at said first end.
Claim 19
Dependent Claim
45 words
A mixing assembly as set forth in claim 17 further comprising at least one hole defined within said annular flange with said portion of said handle extending into said at least one hole to operatively couple said mixing paddle to said portion of said handle.
Claim 20
Dependent Claim
44 words
A mixing assembly as set forth in claim 18 wherein said at least one hole is further defined as first and second holes defined with said annular flange wherein said first hole is defined within said annular flange 180° apart from said second hole.
Claim 21
Dependent Claim
65 words
A mixing assembly as set forth in claim 19 wherein said portion of said handle includes a first set of tabs extending away from said handle with one of said tabs engaging said first hole of said annular flange and the other of said tabs engaging said second hole of said annular flange for operatively coupling said mixing paddle to said portion of said handle.
Claim 22
Dependent Claim
26 words
A mixing assembly as set forth in claim 16 further comprising a post at said first end of said mixing paddle extending from said annular flange.
Claim 23
Dependent Claim
43 words
A mixing assembly as set forth in claim 21 wherein said portion of said handle includes a socket extending away from said handle to receive said post of said mixing paddle for operatively coupling said mixing paddle to said portion of said handle.
Claim 24
Dependent Claim
27 words
A mixing assembly as set forth in claim 22 wherein said post of said mixing paddle and said socket of said portion of said handle are rectangular.
Claim 25
Dependent Claim
24 words
A mixing assembly as set forth in claim 22 wherein said portion of said handle further includes a centering post disposed within said socket.
Claim 26
Dependent Claim
37 words
A mixing assembly as set forth in claim 24 wherein said resilient member is disposed about said centering post, within said socket, and between said portion of said handle and said first end of said mixing paddle.
Claim 27
Dependent Claim
22 words
A mixing assembly as set forth in claim 1 wherein said housing includes a base for providing additional support to said housing.
Claim 28
Dependent Claim
40 words
A mixing assembly as set forth in claim 1 wherein said housing includes a rim and said lid mates with said rim upon moving from said open position to said sealed position to hermetically seal said lid to said housing.
Claim 29
Dependent Claim
22 words
A mixing assembly as set forth in claim 27 further comprising a compression scaling member disposed between said lid and said rim.
Claim 30
Dependent Claim
57 words
A mixing assembly as set forth in claim 27 further comprising a plurality of tabs disposed about said lid and a plurality of locking ramps disposed about said rim of said housing, wherein said tabs of said lid engage said ramps of said housing upon movement of said lid from said open position to said sealed position.
Claim 31
Dependent Claim
23 words
A mixing assembly as set forth in claim 1 wherein said mixing paddle includes a plurality of vanes for mixing the bone cement.
Claim 32
Dependent Claim
14 words
A mixing assembly as set forth in claim 30 wherein said vanes are concave.
Claim 33
Dependent Claim
52 words
A mixing assembly as set forth in claim 30 wherein said plurality of vanes includes a first vane and a second vane, with said first vane in contact with said interior wall for scraping the bone cement and with said second vane spaced from said interior wall for spreading the bone cement.
Claim 34
Dependent Claim
20 words
A mixing assembly as set forth in claim 1 wherein said resilient member is further defined as a compression spring.
Claim 35
Dependent Claim
18 words
A mixing assembly as set forth in claim 1 further comprising a vacuum port defined within said lid.
Claim 36
Dependent Claim
237 words
A mixing assembly for mixing bone cement, said mixing assembly comprising: a housing having at least one interior wall; a lid removably attachable to said housing; a handle having a portion extending through said lid and being rotatable in a first rotational direction; a first mixing paddle operatively coupled to said portion of said handle for rotating with said portion in said first rotational direction; a second mixing paddle operatively coupled to said first mixing paddle for rotating opposite said portion such that said second mixing paddle rotates in a second rotational direction, opposite said first rotational direction, when said portion and said first mixing paddle rotate in said first rotational direction; and a gear set disposed between said first and second mixing paddles for operatively coupling said second mixing paddle to said first mixing paddle such that said second mixing paddle rotates opposite said portion in said second rotational direction when said portion and said first mixing paddle rotate in said first rotational direction; wherein said gear set includes a first gear associated with said first mixing paddle and a second gear associated with said second mixing paddle, with said first gear mating with said second gear to rotate said second mixing paddle in said second rotational direction when said portion and said first mixing paddle rotate in said first rotational direction; wherein a gear ratio of said first gear to said second gear is 2:1.
Claim 37
Dependent Claim
237 words
A mixing assembly for mixing bone cement, said mixing assembly comprising: a housing having at least one interior wall; a lid removably attachable to said housing; a handle having a portion extending through said lid and being rotatable in a first rotational direction; a first mixing paddle operatively coupled to said portion of said handle for rotating with said portion in said first rotational direction; a second mixing paddle operatively coupled to said first mixing paddle for rotating opposite said portion such that said second mixing paddle rotates in a second rotational direction, opposite said first rotational direction, when said portion and said first mixing paddle rotate in said first rotational direction; and a gear set disposed between said first and second mixing paddles for operatively coupling said second mixing paddle to said first mixing paddle such that said second mixing paddle rotates opposite said portion in said second rotational direction when said portion and said first mixing paddle rotate in said first rotational direction; wherein said gear set includes a first gear associated with said first mixing paddle and a second gear associated with said second mixing paddle, with said first gear mating with said second gear to rotate said second mixing paddle in said second rotational direction when said portion and said first mixing paddle rotate in said first rotational direction; wherein a gear ratio of said first gear to said second gear is 2:1.
Claim 38
Dependent Claim
131 words
A mixing assembly for mixing bone cement, said mixing assembly comprising: a housing having at least one interior wall; a lid removably attachable to said housing; a handle having a portion extending through said lid and being rotatable in a first rotational direction; a first mixing paddle operatively coupled to said portion of said handle for rotating with said portion in said first rotational direction; a second mixing paddle operatively coupled to said first mixing paddle for rotating opposite said portion such that said second mixing paddle rotates in a second rotational direction, opposite said first rotational direction, when said portion and said first mixing paddle rotate in said first rotational direction; and a first sleeve defined within and extending entirely through said lid for supporting said portion of said handle.
Claim 39
Dependent Claim
131 words
A mixing assembly for mixing bone cement, said mixing assembly comprising: a housing having at least one interior wall; a lid removably attachable to said housing; a handle having a portion extending through said lid and being rotatable in a first rotational direction; a first mixing paddle operatively coupled to said portion of said handle for rotating with said portion in said first rotational direction; a second mixing paddle operatively coupled to said first mixing paddle for rotating opposite said portion such that said second mixing paddle rotates in a second rotational direction, opposite said first rotational direction, when said portion and said first mixing paddle rotate in said first rotational direction; and a first sleeve defined within and extending entirely through said lid for supporting said portion of said handle.
Claim 40
Dependent Claim
25 words
A mixing assembly as set forth in claim 36 wherein said portion of said handle extends through said first sleeve to extend through said lid.
Claim 41
Dependent Claim
57 words
A mixing assembly as set forth in claim 37 wherein said first mixing paddle includes a first end and a second end wherein said first end is adjacent said lid and is operatively coupled to said portion of said handle extending through said first sleeve and said second end is adjacent said housing opposite said first end.
Claim 42
Dependent Claim
24 words
A mixing assembly as set forth in claim 38 further comprising an annular flange disposed about said first mixing paddle at said first end.
Claim 43
Dependent Claim
46 words
A mixing assembly as set forth in claim 39 further comprising at least one hole defined within said annular flange with said portion of said handle extending into said at least one hole to operatively couple said first mixing paddle to said portion of said handle.
Claim 44
Dependent Claim
44 words
A mixing assembly as set forth in claim 40 wherein said at least one hole is further defined as first and second holes defined with said annular flange wherein said first hole is defined within said annular flange 180° apart from said second hole.
Claim 45
Dependent Claim
78 words
A mixing assembly as set forth in claim 41 wherein said portion of said handle includes a first set of tabs extending away from said handle with one of said tabs extending into said first hole to engage said annular flange at said first hole and the other of said tabs extending into said second hole to engage said annular flange at said second hole for operatively coupling said first mixing paddle to said portion of said handle.
Claim 46
Dependent Claim
27 words
A mixing assembly as set forth in claim 39 further comprising a post at said first end of said first mixing paddle extending from said annular flange.
Claim 47
Dependent Claim
45 words
A mixing assembly as set forth in claim 43 wherein said portion of said handle includes a socket extending away from said handle to receive said post of said first mixing paddle for operatively coupling said first mixing paddle to said portion of said handle.
Claim 48
Dependent Claim
28 words
A mixing assembly as set forth in claim 44 wherein said post of said first mixing paddle and said socket of said portion of said handle are rectangular.
Claim 49
Dependent Claim
24 words
A mixing assembly as set forth in claim 44 wherein said portion of said handle further includes a centering post disposed within said socket.
Claim 50
Dependent Claim
45 words
A mixing assembly as set forth in claim 46 further comprising a first resilient member disposed about said centering post, within said socket, and between said portion of said handle and said first end of said first mixing paddle for biasing said first mixing paddle.
Claim 51
Dependent Claim
33 words
A mixing assembly as set forth in claim 39 further comprising a second sleeve at least partially spaced from said first sleeve and extending from said lid for supporting said second mixing paddle.
Claim 52
Dependent Claim
64 words
A mixing assembly as set forth in claim 48 wherein said second mixing paddle includes a first end and a second end wherein said first end of said second mixing paddle is adjacent said lid and is disposed within said second sleeve and said second end of said second mixing paddle is adjacent said housing opposite said first end of said second mixing paddle.
Claim 53
Dependent Claim
63 words
A mixing assembly as set forth in claim 49 further comprising a gear set disposed between said first and second mixing paddles for operatively coupling said second mixing paddle to said first mixing paddle such that said second mixing paddle rotates opposite said portion in said second rotational direction when said portion and said first mixing paddle rotate in said first rotational direction.
Claim 54
Dependent Claim
75 words
A mixing assembly as set forth in claim 50 wherein said gear set includes a first gear supported on said annular flange of said first mixing paddle and a second gear disposed at said first end of said second mixing paddle, with said first gear mating with said second gear to rotate said second mixing paddle in said second rotational direction when said portion and said first mixing paddle rotate in said first rotational direction.
Claim 55
Dependent Claim
24 words
A mixing assembly as set forth in claim 51 wherein said second gear of said second mixing paddle is recessed into said second sleeve.
Claim 56
Dependent Claim
41 words
A mixing assembly as set forth in claim 52 wherein said annular flange of said first mixing paddle at least partially overlaps said second gear of said second mixing paddle to automatically retain said second mixing paddle in said second sleeve.
Claim 57
Dependent Claim
38 words
A mixing assembly as set forth in claim 48 further comprising a second resilient member disposed within said second sleeve between said lid and said first end of said second mixing paddle for biasing said second mixing paddle.
Claim 58
Dependent Claim
247 words
A mixing assembly for mixing bone cement, said mixing assembly comprising: a housing having at least one interior wall; a lid removably attachable to said housing; a handle having a portion extending through said lid and being rotatable in a first rotational direction; a first mixing paddle operatively coupled to said portion of said handle and having a first fixed axis of rotation, said first mixing paddle rotating with said portion in said first rotational direction about said first fixed axis of rotation; a second mixing paddle having a second fixed axis of rotation that is different from said first fixed axis of rotation of said first mixing paddle; and a gear set disposed between said first and second mixing paddles to operatively couple said second mixing paddle to said first mixing paddle such that said second mixing paddle rotates opposite said portion in a second rotational direction, opposite said first rotational direction, and about said second fixed axis of rotation when said portion and said first mixing paddle rotate in said first rotational direction; wherein said gear set includes a first gear associated with said first mixing paddle and a second gear associated with said second mixing paddle, with said first gear mating with said second gear to rotate said second mixing paddle in said second rotational direction when said portion and said first mixing paddle rotate in said first rotational direction; wherein a gear ratio of said first gear to said second gear is 2:1.
Claim 59
Dependent Claim
247 words
A mixing assembly for mixing bone cement, said mixing assembly comprising: a housing having at least one interior wall; a lid removably attachable to said housing; a handle having a portion extending through said lid and being rotatable in a first rotational direction; a first mixing paddle operatively coupled to said portion of said handle and having a first fixed axis of rotation, said first mixing paddle rotating with said portion in said first rotational direction about said first fixed axis of rotation; a second mixing paddle having a second fixed axis of rotation that is different from said first fixed axis of rotation of said first mixing paddle; and a gear set disposed between said first and second mixing paddles to operatively couple said second mixing paddle to said first mixing paddle such that said second mixing paddle rotates opposite said portion in a second rotational direction, opposite said first rotational direction, and about said second fixed axis of rotation when said portion and said first mixing paddle rotate in said first rotational direction; wherein said gear set includes a first gear associated with said first mixing paddle and a second gear associated with said second mixing paddle, with said first gear mating with said second gear to rotate said second mixing paddle in said second rotational direction when said portion and said first mixing paddle rotate in said first rotational direction; wherein a gear ratio of said first gear to said second gear is 2:1.
Claim 60
Dependent Claim
251 words
A mixing assembly for mixing bone cement, said mixing assembly comprising: a housing having at least one interior wall; a lid removably attachable to said housing; a handle having a portion extending through said lid and being rotatable in a first rotational direction; a first mixing paddle operatively coupled to said portion of said handle and having a first fixed axis of rotation, said first mixing paddle rotating with said portion in said first rotational direction about said first fixed axis of rotation; a second mixing paddle having a second fixed axis of rotation that is different from said first fixed axis of rotation of said first mixing paddle; a gear set disposed between said first and second mixing paddles to operatively couple said second mixing paddle to said first mixing paddle such that said second mixing paddle rotates opposite said portion in a second rotational direction, opposite said first rotational direction, and about said second fixed axis of rotation when said portion and said first mixing paddle rotate in said first rotational direction wherein said gear set includes a first gear associated with said first mixing paddle and a second gear associated with said second mixing paddle, with said first gear mating with said second gear to rotate said second mixing paddle in said second rotational direction when said portion and said first mixing paddle rotate in said first rotational direction; and a first sleeve defined within and extending entirely through said lid for supporting said portion of said handle.
Claim 61
Dependent Claim
251 words
A mixing assembly for mixing bone cement, said mixing assembly comprising: a housing having at least one interior wall; a lid removably attachable to said housing; a handle having a portion extending through said lid and being rotatable in a first rotational direction; a first mixing paddle operatively coupled to said portion of said handle and having a first fixed axis of rotation, said first mixing paddle rotating with said portion in said first rotational direction about said first fixed axis of rotation; a second mixing paddle having a second fixed axis of rotation that is different from said first fixed axis of rotation of said first mixing paddle; a gear set disposed between said first and second mixing paddles to operatively couple said second mixing paddle to said first mixing paddle such that said second mixing paddle rotates opposite said portion in a second rotational direction, opposite said first rotational direction, and about said second fixed axis of rotation when said portion and said first mixing paddle rotate in said first rotational direction wherein said gear set includes a first gear associated with said first mixing paddle and a second gear associated with said second mixing paddle, with said first gear mating with said second gear to rotate said second mixing paddle in said second rotational direction when said portion and said first mixing paddle rotate in said first rotational direction; and a first sleeve defined within and extending entirely through said lid for supporting said portion of said handle.
Claim 62
Dependent Claim
25 words
A mixing assembly as set forth in claim 56 wherein said portion of said handle extends through said first sleeve to extend through said lid.
Claim 63
Dependent Claim
57 words
A mixing assembly as set forth in claim 57 wherein said first mixing paddle includes a first end and a second end wherein said first end is adjacent said lid and is operatively coupled to said portion of said handle extending through said first sleeve and said second end is adjacent said housing opposite said first end.
Claim 64
Dependent Claim
24 words
A mixing assembly as set forth in claim 58 further comprising an annular flange disposed about said first mixing paddle at said first end.
Claim 65
Dependent Claim
33 words
A mixing assembly as set forth in claim 59 further comprising a second sleeve at least partially spaced from said first sleeve and extending from said lid for supporting said second mixing paddle.
Claim 66
Dependent Claim
64 words
A mixing assembly as set forth in claim 60 wherein said second mixing paddle includes a first end and a second end wherein said first end of said second mixing paddle is adjacent said lid and is disposed within said second sleeve and said second end of said second mixing paddle is adjacent said housing opposite said first end of said second mixing paddle.
Claim 67
Dependent Claim
39 words
A mixing assembly as set forth in claim 61 wherein said first gear is supported on said annular flange of said first mixing paddle and said second gear is disposed at said first end of said second mixing paddle.
Claim 68
Dependent Claim
24 words
A mixing assembly as set forth in claim 62 wherein said second gear of said second mixing paddle is recessed into said second sleeve.
Claim 69
Dependent Claim
41 words
A mixing assembly as set forth in claim 63 wherein said annular flange of said first mixing paddle at least partially overlaps said second gear of said second mixing paddle to automatically retain said second mixing paddle in said second sleeve.