US5015101A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus and process for mixing and filling
Assignee: THURGAUER KANTONALBANK A Corp CHARTERED IN AND EXISTING UNDER LAWS OF SWITZERLAND THAT MAINTAINS ITS PRINCIPAL OFFICES AT
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Filing: 1990-06-25
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Granted: 1991-05-14
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Expires: 2010-06-25
Abstract
Abstract The invention relates to a device and a method for mixing and transferring a viscous mixture composed of at least two constituents and especially to a device and a method for mixing and transferring bone cement into a container for application (130). The device has a mixing beaker (100), a sealing device (140) which can be coupled to the container for application (130) and a die (150) movable in the container for application (130). The container for application (130) is movable in the mixing beaker (100) relative to the latter. The relative movement of container for application (130), die (150) and mixing beaker (100) results in the bone cement being mixed and transferred into the container for application (130). <IMAGE>
Inventors
- 👤 Klaus Draenert
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 18:30
CPC Classifications
B; B05; B05C; B05C17/00; B05C17/005; B05C17/015; A; A61; A61B; A61B17/00; A61B17/56; A61B17/58; A61B17/88; A61B17/8802; A61B17/8805; A61B17/8825; A61B17/8827; B01; B01F; B01F31/00; B01F31/44; B01F31/441; B01F33/00; B01F33/50; B01F33/501; B01F33/5011; B01F33/50112; B01F35/00; B01F35/71; B01F35/713; B01F35/7137; B01F35/716; B01F35/7162; B01F35/7163; A61B17/8833; A61B2017/8838; A61B50/00; A61B2050/005; A61B2050/0062; A61B2050/0063; A61F; A61F2/00; A61F2/02; A61F2/30; A61F2002/30001; A61F2002/30316; A61F2002/30535; A61F2002/30561; A61F2/46; A61F2002/4685; A61F2250/00; A61F2250/0058; A61F2250/0071; B01F2101/00; B01F2101/20; B01F33/70; B01F35/30; B01F35/32; B01F35/32005; B01F35/3202
Claims Analysis
Total Claims: 23
Claim 1
Independent Claim
135 words
An apparatus for mixing a compound containing at least two components, comprising: a first vessel closed at one end thereof; a second vessel, the cross-section of which is smaller than that of the first vessel, the second vessel having an opening at one end thereof and being movable within the first vessel relative thereto; and a sealing means at the outer circumference of the second vessel at its open end which seals off the space between the inner circumference of the first vessel and the outer circumference of the second vessel for the compound and its components so that the components are mixed and the compound is extruded into the second vessel when the two vessels are moved relative to each other, by pushing the second vessel with its open end into the first vessel.
Claim 2
Independent Claim
135 words
An apparatus for mixing a compound containing at least two components, comprising: a first vessel closed at one end thereof; a second vessel, the cross-section of which is smaller than that of the first vessel, the second vessel having an opening at one end thereof and being movable within the first vessel relative thereto; and a sealing means at the outer circumference of the second vessel at its open end which seals off the space between the inner circumference of the first vessel and the outer circumference of the second vessel for the compound and its components so that the components are mixed and the compound is extruded into the second vessel when the two vessels are moved relative to each other, by pushing the second vessel with its open end into the first vessel.
Claim 3
Dependent Claim
17 words
The apparatus according to claim 1, further comprising a plunger which is movable within the second vessel.
Claim 4
Dependent Claim
56 words
A process for mixing a compound containing at least two components wherein the compound is introduced into a first vessel and is then repeatedly pushed through an opening into a second vessel and back again into said first vessel by means of an opposite motion of said vessels, both vessels being made of a rigid material.
Claim 5
Dependent Claim
56 words
A process for mixing a compound containing at least two components wherein the compound is introduced into a first vessel and is then repeatedly pushed through an opening into a second vessel and back again into said first vessel by means of an opposite motion of said vessels, both vessels being made of a rigid material.
Claim 6
Independent Claim
106 words
An apparatus for mixing bone cement and filling it into an applicator, said apparatus comprising: an applicator; a mixing bowl, the cross-section of which is larger than that of the applicator and in which the applicator is insertable with one of its ends and can be moved relative to the mixing bowl; and a sealing means which can be connected to the applicator and seals off the outer surface of the applicator and the inner surface of the mixing bowl in a cement-tight manner so that the bone cement cannot flow between the outer surface of the applicator and the inner surface of the mixing bowl.
Claim 7
Independent Claim
106 words
An apparatus for mixing bone cement and filling it into an applicator, said apparatus comprising: an applicator; a mixing bowl, the cross-section of which is larger than that of the applicator and in which the applicator is insertable with one of its ends and can be moved relative to the mixing bowl; and a sealing means which can be connected to the applicator and seals off the outer surface of the applicator and the inner surface of the mixing bowl in a cement-tight manner so that the bone cement cannot flow between the outer surface of the applicator and the inner surface of the mixing bowl.
Claim 8
Dependent Claim
29 words
The apparatus according to claim 4, further comprising a lid for sealing the mixing bowl in a vacuum-tight manner, the lid having a plug for connecting a vacuum lead.
Claim 9
Dependent Claim
32 words
The apparatus according to claim 5, wherein the lid has a firm rim and an inner portion made of flexible material and comprising a feed-through for the introduction of a round rod.
Claim 10
Dependent Claim
41 words
The apparatus according to claim 4, further comprising a plunger which is movable within the applicator, in a cement-tight manner so that the bone cement cannot flow between the outer surface of the plunger and the inner surface of the applicator.
Claim 11
Dependent Claim
18 words
The apparatus according to claim 7, further comprising a manipulation means which can be connected to the plunger.
Claim 12
Dependent Claim
25 words
The apparatus according to claim 7, further comprising a membrane for sealing off the end of the applicator which is insertable into the mixing bowl.
Claim 13
Dependent Claim
22 words
The apparatus according to claim 4, wherein the mixing bowl is cylindrical and has a bottom, the interior of which is concave.
Claim 14
Dependent Claim
22 words
The apparatus according to claim 4, wherein the mixing bowl is cylindrical and has a bottom, the interior of which is rounded.
Claim 15
Dependent Claim
19 words
The apparatus according to claim 4, wherein the sealing means comprises at least one valve to let out gas.
Claim 16
Dependent Claim
31 words
The apparatus according to claim 4, wherein the sealing means comprises a cylindrical member having several flexible lamellae on its outer circumference which contact the inner circumference of the mixing bowl.
Claim 17
Dependent Claim
22 words
The apparatus according to claim 1, wherein at least the foremost lamella which faces the bottom of the mixing bowl is concave.
Claim 18
Dependent Claim
46 words
The apparatus according to claim 4, further comprising a third vessel which receives the monomer and is connectable to the mixing bowl, the monomer vessel comprising a needle and the bottom of the mixing bowl comprising a reclosable plug which can be pierced by the needle.
Claim 19
Dependent Claim
19 words
The apparatus according to claim 4, further comprising a mouthpiece which is connectable to one end of the applicator.
Claim 20
Dependent Claim
15 words
The apparatus according to claim 4, further comprising a means for evacuating the mixing bowl.
Claim 21
Dependent Claim
14 words
The apparatus according to claim 4, further comprising a means for evacuating the applicator.
Claim 22
Dependent Claim
72 words
A process for mixing bone cement consisting of liquid monomer and polymer powder and filling it into an applicator, the process comprising the steps of introducing the liquid monomer and the polymer powder into a mixing bowl, mixing said liquid monomer and said polymer powder to form a mixture and then extruding said mixture through an opening of said mixing bowl into said applicator, by means of compression applied to said mixture.
Claim 23
Dependent Claim
72 words
A process for mixing bone cement consisting of liquid monomer and polymer powder and filling it into an applicator, the process comprising the steps of introducing the liquid monomer and the polymer powder into a mixing bowl, mixing said liquid monomer and said polymer powder to form a mixture and then extruding said mixture through an opening of said mixing bowl into said applicator, by means of compression applied to said mixture.
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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) | 1994-05-13 | 1994-11-12 | 1995-05-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1998-05-13 | 1998-11-12 | 1999-05-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2002-05-13 | 2002-11-12 | 2003-05-14 | $7700.00 | Window Closed / Lapsed |