US5336760A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method and useful apparatus for preparing pharmaceutical compositions
Assignee: Baxter International Inc
•
Filing: 1990-09-14
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Granted: 1994-08-09
•
Expires: 2010-09-14
Abstract
Abstract The invention provides an apparatus and method for the preparation of a pharmaceutical composition comprising a complex of an antigen component and the corresponding antibody component in a pharmacologically acceptable carrier. The apparatus comprises a housing chamber for containing paramagnetic particles and a platform against which the housing chamber is releasably retained. The platform contains one or more magnets located adjacent to the housing chamber when the housing chamber is positioned on the platform. The platform is secured to a support which allows the platform, and thus the housing chamber, to be rotated between a vertical and a horizontal position. The method involves supplying a quantity of paramagnetic particles bearing the antigen component to the housing chamber, introducing into the housing chamber a physiological fluid which contains the antibody component, mixing the paramagnetic particles and the physiological fluid to form an antigen component and antibody component complex on the paramagnetic beads, removing the physiological fluid from the housing chamber, and eluting the antigen component and antibody component complex from the paramagnetic beads in a pharmaceutically acceptable eluting solution.
Inventors
- 👤 R. Alan Hardwick
- 👤 Alan K. Smith
- 👤 William C. Lake
- 👤 Dennis E. Chenoweth
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 10:00
CPC Classifications
B; B03; B03C; B03C1/00; B03C1/02; B03C1/28; B03C1/288; A; A61; A61K; A61K47/00; A61K47/50; A61K47/51; A61K47/68; B03C2201/00; B03C2201/26; Y; Y10; Y10S; Y10S530/00; Y10S530/81; Y10S530/811
Claims Analysis
Total Claims: 26
Claim 1
Independent Claim
157 words
A magnetic separator apparatus comprising: a housing defining a chamber, which includes at least a first inlet and at least a first outlet for gaining entrance to the chamber; a support platform to which the housing is releasably mounted, the support platform including one or more magnets located at a surface of the support platform against which the housing is releasably mounted; a base having at least two spaced apart portions between which the support platform is positioned; one or more arms selectively connected at one location to the support platform and at a second location to one of the base portions, with one of such connections of each of the one or more arms being by means all owing for rotation of the support platform about an axis defined by the arms; and spring biased means associated with the one or more arms to hold the support platform at a location about the axis of rotation.
Claim 2
Dependent Claim
157 words
A magnetic separator apparatus comprising: a housing defining a chamber, which includes at least a first inlet and at least a first outlet for gaining entrance to the chamber; a support platform to which the housing is releasably mounted, the support platform including one or more magnets located at a surface of the support platform against which the housing is releasably mounted; a base having at least two spaced apart portions between which the support platform is positioned; one or more arms selectively connected at one location to the support platform and at a second location to one of the base portions, with one of such connections of each of the one or more arms being by means all owing for rotation of the support platform about an axis defined by the arms; and spring biased means associated with the one or more arms to hold the support platform at a location about the axis of rotation.
Claim 3
Dependent Claim
49 words
The apparatus of claim 1 wherein the one or more arms are at least a single shaft connected at one point to the support platform and at another point to the base, with one of the points of connection being freely rotatable about an axis defined by the shaft.
Claim 4
Dependent Claim
75 words
The apparatus of claim 1 wherein the base includes two spatially separated beams between which the support platform is positioned, with the one or more arms being first and second shafts connected at one location to the support platform and at another location to a respective one of the beams, wherein each of the first and second shafts is mounted at one of the locations for free rotation about an axis defined by the shaft.
Claim 5
Dependent Claim
111 words
The apparatus of claim 1 wherein the base includes two spatially separated beams between which the support platform is positioned, with the one or more arms being first and second shafts connected at one location to the support platform and at another location to a respective one of the beams, wherein each of the first and second shafts is mounted at one of the locations for free rotation about an axis defined by the shaft and wherein the spring biased means is first and second springs mounted respectively about the first and second shafts, wherein each of the first and second springs remains under tension to bear against the support platform.
Claim 6
Dependent Claim
27 words
The apparatus of claim 4 wherein the housing is a cylindrical container tapered at one end, with the tapering end in fluid communication with a single outlet.
Claim 7
Dependent Claim
21 words
The apparatus of claim 5 wherein the single outlet includes a two-way valve selectively communicating with first and second fluid pathways.
Claim 8
Dependent Claim
68 words
The apparatus of claim 1 wherein the support platform includes a spring biased clip which includes a portion to bear against and hold the housing to the support platform, the clip being resiliently biased in a first direction towards the support platform, while being moveable in a second direction away from the support platform to allow placement of the housing between the clip portion and the support platform.
Claim 9
Dependent Claim
66 words
The apparatus of claim 6 wherein platform includes a spring biased clip which includes a portion to bear against and hold the housing to the support platform, the clip being resiliently biased in a first direction towards the support platform, while being moveable in a second direction away from the support platform to allow placement of the housing between the clip portion and the support platform.
Claim 10
Dependent Claim
107 words
A magnetic separator comprising: a support platform to which a housing is releasably mounted, the support platform including one or more magnets located at a surface of the support platform against which the housing is releasably mounted; a base having at least two spaced apart portions between which the support platform is positioned; one or more arms selectively connected at one location to the support platform and at a second location to one of the base portions, with one of such connections of each of the one or more arms being by means allowing for rotation of the support platform about an axis defined by the arms.
Claim 11
Dependent Claim
107 words
A magnetic separator comprising: a support platform to which a housing is releasably mounted, the support platform including one or more magnets located at a surface of the support platform against which the housing is releasably mounted; a base having at least two spaced apart portions between which the support platform is positioned; one or more arms selectively connected at one location to the support platform and at a second location to one of the base portions, with one of such connections of each of the one or more arms being by means allowing for rotation of the support platform about an axis defined by the arms.
Claim 12
Dependent Claim
131 words
A magnetic separator comprising: a support platform to which a housing is releasably mounted, the support platform including one or more magnets located at a surface of the support platform against which the housing is releasably mounted; a base having at least two spaced apart portions between which the support platform is positioned; one or more arms selectively connected at one location to the support platform and at a second location to one of the base portions, with one of such connections of each of the one or more arms being by means allowing for rotation of the support platform about an axis defined by the arms; and spring biased means associated with the one or more arms to hold the support platform at a location about the axis of rotation.
Claim 13
Dependent Claim
131 words
A magnetic separator comprising: a support platform to which a housing is releasably mounted, the support platform including one or more magnets located at a surface of the support platform against which the housing is releasably mounted; a base having at least two spaced apart portions between which the support platform is positioned; one or more arms selectively connected at one location to the support platform and at a second location to one of the base portions, with one of such connections of each of the one or more arms being by means allowing for rotation of the support platform about an axis defined by the arms; and spring biased means associated with the one or more arms to hold the support platform at a location about the axis of rotation.
Claim 14
Dependent Claim
49 words
The separator of claim 10 wherein the one or more arms are at least a single shaft connected at one point to the support platform and at another point to the base, with one of the points of connection being freely rotatable about an axis defined by the shaft.
Claim 15
Dependent Claim
75 words
The separator of claim 10 wherein the base includes two spatially separated beams between which the support platform is positioned, with the one or more arms being first and second shafts connected at one location to the support platform and at another location to a respective one of the beams, wherein each of the first and second shafts is mounted at one of the locations for free rotation about an axis defined by the shaft.
Claim 16
Dependent Claim
40 words
The separator of claim 12 wherein the spring biased means is first and second springs mounted respectively about the first and second shafts, wherein each of the first and second springs remains under tension to bear against the support platform.
Claim 17
Dependent Claim
68 words
The separator of claim 10 wherein the support platform includes a spring biased clip which includes a portion to bear against and hold the housing to the support platform, the clip being resiliently biased in a first direction towards the support platform, while being moveable in a second direction away from the support platform to allow placement of the housing between the clip portion and the support platform.
Claim 18
Dependent Claim
68 words
The separator of claim 13 wherein the support platform includes a spring biased clip which includes a portion to bear against and hold the housing to the support platform, the clip being resiliently biased in a first direction towards the support platform, while being moveable in a second direction away from the support platform to allow placement of the housing between the clip portion and the support platform.
Claim 19
Dependent Claim
125 words
A method of preparing a pharmaceutical composition of a specific target antibody component population in a pharmaceutically acceptable carrier from a physiological fluid using paramagnetic particles bearing an antigen component selective for the target antibody component population in combination with the magnetic system of claim 1 comprising: supplying a quantity of the paramagnetic particles to the housing chamber; introducing the physiological fluid into the housing chamber; mixing the paramagnetic particles and the physiological fluid; removing the physiological fluid from the housing chamber; washing the housing chamber with an acceptable wash fluid; draining the wash fluid from the housing chamber; providing the housing chamber with a pharmaceutically acceptable eluting solution; mixing the paramagnetic particles and eluting solution; and removing the eluting solution from the housing chamber.
Claim 20
Dependent Claim
134 words
A method of preparing a pharmaceutical composition of a specific target antibody component population in a pharmaceutically acceptable carrier from a physiological fluid using paramagnetic particles bearing an antigen component selective for the target antibody component population in combination with the magnetic system of claim 4 comprising: supplying a quantity of the paramagnetic particles to the housing chamber; introducing the physiological fluid into the housing chamber; mixing the paramagnetic particles and the physiological fluid to form an antigen component and antibody component complex; removing the physiological fluid from the housing chamber; washing the housing chamber with an acceptable wash fluid; draining the wash fluid from the housing chamber; providing the housing chamber with a pharmaceutically acceptable eluting solution; mixing the paramagnetic particles and eluting solution; and removing the eluting solution from the housing chamber.
Claim 21
Dependent Claim
33 words
The method of claim 17 further including a step of orientating the housing chamber in a substantially horizontal orientation prior to the steps of removing the physiological fluid and removing the eluting solution.
Claim 22
Dependent Claim
20 words
The method of claim 17 further including the step of neutralizing the eluting solution after removal from the housing chamber.
Claim 23
Dependent Claim
29 words
The method of claim 17 wherein the selected eluting solution is of the type to cause said antigen component and antibody component complex to cleave from said paramagnetic particles.
Claim 24
Dependent Claim
30 words
The method of claim 17 wherein the selected eluting solution is of the type to cause said antibody component to cleave from the antigen component bound to the paramagnetic particles.
Claim 25
Dependent Claim
51 words
The method of claim 17 wherein the first and second steps of mixing are performed by first removing the housing chamber from the support platform and second by shaking the housing chamber to admix the paramagnetic particles and the respective solutions, and subsequently affixing the housing chamber to the support platform.
Claim 26
Dependent Claim
26 words
The method of claim 17 wherein the first and second steps of mixing are performed by rotating the support platform with the housing chamber supported thereon.
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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) | 1997-08-08 | 1998-02-07 | 1998-08-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2001-08-08 | 2002-02-07 | 2002-08-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2005-08-08 | 2006-02-07 | 2006-08-09 | $7700.00 | Window Closed / Lapsed |