US6312149B1
Expired / Lapsed
US
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Mixing device
Assignee: Biomet Cementing Technology AB
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Filing: 2000-02-18
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Granted: 2001-11-06
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Expires: 2020-02-18
Abstract
Abstract The present invention relates to a mixing device for the manufacture of bone cement by mixing components intended therefor, said mixing device including a mixing member ( 1 ) with a mixing space ( 2 ) for mixing of said components ( 11, 12 ). A vacuum-generating device ( 17 ) is provided to generate a vacuum in the mixing space ( 2 ) for mixing said components ( 11, 12 ) under vacuum. A mixing means ( 10 ) is provided to mix the components ( 11, 12 ) with each other in the mixing space ( 2 ). A sealed container ( 20 ) with one of the components ( 12 ) is provided in an outer container ( 22 ). The sealed container ( 20 ) can be opened when it is provided in the outer container ( 22 ) to permit flow of one of the components ( 12 ) to the other component ( 11 ) in the mixing space ( 2 ) for mixing of said components ( 11, 12 ). The outer container ( 22 ) and an end portion ( 5 or 3 ) of the mixing member ( 1 ) can be connected to each other and the mixing means ( 10 ) is movably mounted relative to the mixing space ( 2 ) at an opposite end portion ( 3 or 5 ) of the mixing member ( 1 ).
Inventors
- 👤 Peter Åke Sjövall
- 👤 Lars Åke Alvar Lidgren
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 06:41
CPC Classifications
B; B01; B01F; B01F35/00; B01F35/71; B01F35/713; B01F23/00; B01F23/50; B01F23/565; B01F31/00; B01F31/44; B01F31/441; B01F33/00; B01F33/50; B01F33/501; B01F33/5011; B01F35/181; B01F35/7131; B01F35/717; B01F35/7173; B01F35/75; B01F35/754; B01F35/75425; A; A61; A61B; A61B17/00; A61B17/56; A61B17/58; A61B17/88; A61B17/8802; A61B17/8805; A61B17/8827; A61F; A61F2/00; A61F2/02; A61F2/30; A61F2002/30001; A61F2002/30003; A61F2002/3006; A61F2002/3009; A61F2002/30316; A61F2002/30535; A61F2002/30561; A61F2/46; A61F2002/4685; A61F2250/00; A61F2250/0058; A61F2250/0071; A61F2250/0091; B01F2101/00; B01F2101/20; B01F33/70
Claims Analysis
Total Claims: 38
Claim 1
Independent Claim
390 words
Mixing device for the manufacture of bone cement by mixing components intended therefor, said mixing device including a mixing member ( 1 ) with a mixing space ( 2 ) for mixing of said components ( 11 , 12 ), wherein the components ( 11 , 12 ) are provided separated from each other before mixing thereof in the mixing device, wherein a first component ( 11 ) for the manufacture of bone cement is provided in the mixing space ( 2 ) in which mixing is to be carried through, wherein a second component ( 12 ) for the manufacture of bone cement is provided in at least one sealed container ( 20 ), wherein an opening device ( 32 ) is provided for opening the sealed container ( 20 ), wherein a vacuum-generating device ( 17 ) is provided to generate a vacuum in the mixing space ( 2 ) for mixing said components ( 11 , 12 ) under vacuum, wherein a mixing means ( 10 ) is provided for mixing said first and second components ( 11 , 12 ) with each other in the mixing space ( 2 ), wherein a discharge means ( 4 ) is provided to permit discharge of mixed bone cement from the mixing space ( 2 ), wherein the sealed container ( 20 ) with the second component ( 12 ) is provided in an outer container ( 22 ), wherein a coupling device ( 34 ) is provided for connecting the outer container ( 22 ) and the mixing member ( 1 ) to each other, and wherein the sealed container ( 20 ) can be opened when it is provided in the outer container ( 22 ) to permit flow of the second component ( 12 ) to the first component ( 11 ) in the mixing space ( 2 ) for mixing of said components ( 11 , 12 ), characterized in that the outer container ( 22 ) and an end portion ( 5 or 3 ) of the mixing member ( 1 ) can be connected to each other and that the mixing means ( 10 ) is movably mounted relative to the mixing space ( 2 ) at an opposite end portion ( 3 or 5 ) of the mixing member ( 1 ).
Claim 2
Dependent Claim
390 words
Mixing device for the manufacture of bone cement by mixing components intended therefor, said mixing device including a mixing member ( 1 ) with a mixing space ( 2 ) for mixing of said components ( 11 , 12 ), wherein the components ( 11 , 12 ) are provided separated from each other before mixing thereof in the mixing device, wherein a first component ( 11 ) for the manufacture of bone cement is provided in the mixing space ( 2 ) in which mixing is to be carried through, wherein a second component ( 12 ) for the manufacture of bone cement is provided in at least one sealed container ( 20 ), wherein an opening device ( 32 ) is provided for opening the sealed container ( 20 ), wherein a vacuum-generating device ( 17 ) is provided to generate a vacuum in the mixing space ( 2 ) for mixing said components ( 11 , 12 ) under vacuum, wherein a mixing means ( 10 ) is provided for mixing said first and second components ( 11 , 12 ) with each other in the mixing space ( 2 ), wherein a discharge means ( 4 ) is provided to permit discharge of mixed bone cement from the mixing space ( 2 ), wherein the sealed container ( 20 ) with the second component ( 12 ) is provided in an outer container ( 22 ), wherein a coupling device ( 34 ) is provided for connecting the outer container ( 22 ) and the mixing member ( 1 ) to each other, and wherein the sealed container ( 20 ) can be opened when it is provided in the outer container ( 22 ) to permit flow of the second component ( 12 ) to the first component ( 11 ) in the mixing space ( 2 ) for mixing of said components ( 11 , 12 ), characterized in that the outer container ( 22 ) and an end portion ( 5 or 3 ) of the mixing member ( 1 ) can be connected to each other and that the mixing means ( 10 ) is movably mounted relative to the mixing space ( 2 ) at an opposite end portion ( 3 or 5 ) of the mixing member ( 1 ).
Claim 3
Dependent Claim
44 words
Mixing device according to claim 1 , characterized in that the opening device ( 32 ) can be directly or indirectly affected by the mixing means ( 10 ) to open the sealed container ( 20 ) inside the outer container ( 22 ).
Claim 4
Dependent Claim
66 words
Mixing device according to claim 2 , characterized in that the mixing means ( 10 ) includes a rod ( 13 ) which from the outside extends into the mixing space ( 2 ) through an opening ( 14 ) in the discharge means ( 4 ) and that the rod ( 13 ) is sealingly and movably mounted in the discharge means ( 4 ).
Claim 5
Dependent Claim
43 words
Mixing device according to claim 3 characterized in that the rod ( 13 ) has such length that it permits the mixing means ( 10 ) to displace the opening means ( 33 ) for opening of the sealed container ( 20 ).
Claim 6
Dependent Claim
75 words
Mixing device according to claim 1 , characterized in that the opening device ( 32 ) comprises an opening means ( 33 ) which is movably mounted between the mixing means ( 10 ) and the sealed container ( 20 ) inside the outer container ( 22 ) and that the opening means ( 33 ) is maneouvrable by means of the mixing means ( 10 ) for opening the sealed container ( 20 ).
Claim 7
Dependent Claim
33 words
Mixing device according to claim 5 , characterized in that the opening means ( 33 ) of the opening device ( 32 ) is movably mounted on the outer container ( 22 ).
Claim 8
Dependent Claim
42 words
Mixing device according to claim 6 , characterized in that the opening means ( 33 ) extends through such a protruding member ( 35 ) of the outer container ( 22 ) which forms part of the coupling device ( 34 ).
Claim 9
Dependent Claim
71 words
Mixing device according to claim 7 , characterized in that the opening means ( 33 ) extends into the outer container ( 22 ) and out beyond the protruding member ( 35 ) of said outer container ( 22 ) as well as into a protruding member ( 7 ) which is provided on the mixing member ( 1 ) and which forms part of the coupling device ( 34 ).
Claim 10
Dependent Claim
64 words
Mixing device according to claim 1 , characterized in that the mixing member ( 1 ) has no space for the outer container ( 22 ) and that the coupling device ( 34 ) permits connection of the outer container ( 22 ) to the mixing member ( 1 ) such that said outer container is located outside said mixing member ( 1 ).
Claim 11
Dependent Claim
44 words
Mixing device according to claim 9 , characterized in that the mixing member ( 1 ) further lacks space for the coupling device ( 34 ) and that said coupling device ( 34 ) is also located outside said mixing member ( 1 ).
Claim 12
Dependent Claim
28 words
Mixing device according to claim 9 , characterized in that the mixing member ( 1 ) defines only one substantial space, namely the mixing space ( 2 ).
Claim 13
Dependent Claim
67 words
Mixing device according to claim 1 , characterized in that the coupling device ( 34 ) is designed to permit the second component ( 12 ) to flow, through said coupling device ( 34 ), after opening of the sealed container ( 20 ), from said sealed container ( 20 ) into the mixing space ( 2 ) and the first component ( 11 ) provided therein.
Claim 14
Dependent Claim
76 words
Mixing device according to claim 1 , characterizedi n that the coupling device ( 34 ) comprises a member ( 7 ) which protrudes from one end portion ( 5 or 3 ) of the mixing member ( 1 ) and another member ( 35 ) which protrudes from an end portion ( 24 a ) of the outer container ( 22 ), said protruding members ( 7 , 35 ) being connectable to each other.
Claim 15
Dependent Claim
116 words
Mixing device according to claim 13 , characterized in that the member of the coupling device ( 34 ) protruding from the mixing member ( 1 ) is a tubular member ( 7 ) which is fixedly attached to an end side ( 5 a ) of the mixing member ( 1 ) and which protrudes in axial direction relative to the mixing member ( 1 ), that the member of the coupling device ( 34 ) protruding from the outer container ( 22 ) is a tubular member ( 35 ) and that the tubular members ( 7 , 35 ) of the coupling device ( 34 ) can be sealingly connected to each other.
Claim 16
Dependent Claim
41 words
Mixing device according to claim 14 , characterized in that the tubular members ( 7 , 35 ) have threads ( 9 , 36 ) which are designed to permit screwing together of said tubular members ( 7 , 35 ).
Claim 17
Dependent Claim
51 words
Mixing device according to claim 14 , characterized in that the tubular member ( 7 ) on the mixing member ( 1 ) is a member which permits connection of a discharge pipe ( 8 ) through which ready mixed bone cement is discharged from the mixing space ( 2 ).
Claim 18
Dependent Claim
97 words
Mixing device according to claim 1 , characterized in that the outer container ( 22 ) is sealed, that the outer container ( 22 ) and the mixing member ( 1 ) are closely connected to each other through the coupling device ( 34 ) and that the inner portions of the outer container ( 22 ) communicate with the mixing space ( 2 ) so that the vacuum-generating device ( 17 ) generates a vacuum in the mixing space ( 2 ) as well as in the inner portions of the outer container ( 22 ).
Claim 19
Dependent Claim
81 words
Mixing device according to claim 1 , characterized in that the outer container ( 22 ) includes a coupling member ( 43 ) for connection of the vacuum-generating device ( 17 ) and that the coupling member ( 43 ) through a communicating member ( 44 ) communicates with the mixing space ( 2 ) of the mixing member ( 1 ) when the outer container ( 22 ) and the mixing member ( 1 ) are connected to each other.
Claim 20
Dependent Claim
45 words
Mixing device according to claim 18 , characterized in that the communicating member ( 44 ) is separated from such a member through which the second component ( 12 ) flows from the outer container ( 22 ) to the mixing space ( 2 ).
Claim 21
Dependent Claim
51 words
Mixing device according to claim 18 , characterized in that a pipe ( 37 ) is provided to separate the communicating member ( 44 ) from said member through which the second component ( 12 ) flows from the outer container ( 22 ) to the mixing space ( 2 ).
Claim 22
Dependent Claim
55 words
Mixing device according to claim 1 , characterized in that the outer container ( 22 ) and the mixing member ( 1 ) are connected to each other while mixing of bone cement is carried through under a vacuum in the mixing space ( 2 ) by means of the mixing means ( 10 ).
Claim 23
Dependent Claim
73 words
Mixing device according to claim 1 , characterized in that the outer container ( 22 ) is removable from the mixing member ( 1 ) when mixing of the bone cement in the mixing space ( 2 ) has been terminated such that other members can be connected to the end portion ( 5 ) of the mixing device ( 1 ) to which the outer container ( 22 ) has been connected.
Claim 24
Dependent Claim
25 words
Mixing device according to claim 1 , characterized in that the sealed container ( 20 ) is a glass ampoule or vial ( 21 ).
Claim 25
Dependent Claim
78 words
Mixing device according to claim 23 , characterized in that the outer container ( 22 ) defines a space ( 42 ) for receiving a tip ( 26 ) which has been broken off from the glass ampoule or vial ( 21 ), whereby the broken-off tip ( 26 ) is situated in a position in said space ( 42 ) such that the second component ( 12 ) can flow out of said tip ( 26 ).
Claim 26
Dependent Claim
74 words
Mixing device according to claim 23 , characterized in that the outer container ( 22 ) holds the glass ampoule or vial ( 21 ) oriented such that the angle (α) between a longitudinal centre line ( 30 ) along the glass ampoule or vial ( 21 ) and its tip ( 26 ) and a longitudinal centre line ( 31 ) along the opening means ( 33 ) is between 110° and 160°.
Claim 27
Dependent Claim
83 words
Mixing device according to claim 1 , characterized in that an end portion of the mixing member ( 1 ) includes a removable cover ( 49 ) and that this cover ( 49 ) has a tubular member ( 7 ) to which a tubular member ( 35 ) of a coupling device ( 34 ) for connection of the outer container ( 22 ) to the mixing member ( 1 ) as well as a discharge pipe ( 8 ) are attachable.
Claim 28
Dependent Claim
92 words
Mixing device according to claim 1 , characterized in that, at an end portion ( 5 ) of the mixing member ( 1 ), a filter device ( 51 ) is provided in the mixing space ( 2 ) for preventing components ( 11 , 12 ) from being sucked into the vacuum-generating device ( 17 ) from said mixing space ( 2 ) and that said filter device ( 51 ) is provided such that gases pass therethrough in an axial direction (R) relative to the mixing space ( 2 ).
Claim 29
Dependent Claim
144 words
Mixing device according to claim 1 , characterized in that the outer container ( 22 ) has at least one front opening ( 53 ), that the front portion of the outer container ( 22 ) through a pivot device ( 52 ) is pivotally connected to a tubular member ( 35 ) of a coupling device ( 34 ) through which the outer container ( 22 ) can be connected to the mixing member ( 1 ), that the outer container ( 22 ) can be moved by means of said pivot device ( 52 ) such that the sealed container ( 20 ) may be inserted through said front opening ( 53 ) and that the outer container ( 22 ) is there-after. movable towards said tubular member ( 35 ) and can be snapped-in onto said tubular member ( 35 ).
Claim 30
Dependent Claim
81 words
Mixing device according to claim 1 , characterized in that the outer container ( 22 ) and a discharge means ( 4 ) forming part of the mixing member ( 1 ) and provided at an end portion ( 3 ) thereof, are connected to each other and that the mixing means ( 10 ) is movably mounted relative to the mixing space ( 2 ) at an opposite end portion ( 5 ) of the mixing member ( 1 ).
Claim 31
Dependent Claim
35 words
Mixing device according to claim 29 , characterized in that all sealed containers ( 20 ) located in the outer container ( 22 ) can be opened with the same opening device ( 32 ).
Claim 32
Dependent Claim
28 words
Mixing device according to claim 1 , characterized in that the outer container ( 22 ) is designed to contain more than one sealed container ( 20 ).
Claim 33
Dependent Claim
101 words
Mixing device according to claim 1 , characterized in that the coupling device ( 34 ) is designed such that outer containers ( 22 ) with one size for small sealed containers ( 20 ) or another size for larger sealed containers ( 20 ) and/or outer containers ( 22 ) with one size for a sealed container ( 20 ) or another size for several sealed containers ( 20 ) are connectable to each other, whereby differently sized and/or a different number of sealed containers ( 20 ) can be emptied in one and same mixing member ( 1 ).
Claim 34
Dependent Claim
26 words
Mixing device according to claim 1 , characterized in that the outer container ( 22 ) consists of such transparent material that one can see thereinto.
Claim 35
Dependent Claim
63 words
Mixing device according to claim 1 , characterized in that the mixing space ( 2 ) of the mixing member ( 1 ) is sealed and contains the first component ( 11 ) and that the mixing space ( 2 ) can be opened before the mixing member ( 1 ) and the outer container ( 22 ) are connected to each other.
Claim 36
Dependent Claim
43 words
Mixing device according to claim 1 , characterized in that the mixing space ( 2 ) of the mixing member ( 1 ) is empty and is provided with the first component ( 11 ) first when mixing is to be carried through.
Claim 37
Dependent Claim
36 words
Mixing device according to claim 1 , characterized in that the outer container ( 22 ) is designed to receive different types of existing sealed containers ( 20 ) with the first component ( 11 ).
Claim 38
Dependent Claim
49 words
Mixing device according to claim 1 , characterized in that the outer container ( 22 ) is movably mounted relative to an opening means which permits opening of the sealed container ( 20 ) when said sealed container ( 20 ) is brought in contact with said opening means.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 2004-11-05 | 2005-05-07 | 2005-11-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2008-11-05 | 2009-05-07 | 2009-11-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2012-11-05 | 2013-05-07 | 2013-11-06 | $7700.00 | Window Closed / Lapsed |