Patents Assigned to Sarstedt
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Patent number: 12383176Abstract: A sealing cap seals a sample tube for receiving a liquid, in particular blood. The sealing cap includes a cavity delimited by a membrane and a base having an opening that can be sealed by a non-return valve. In order to reduce the volume of liquid which, during centrifugation of the sample tube sealed by the sealing cap, flows out of the sealing cap through the then open opening into the sample tube, the cavity of the sealing cap has a separating wall that divides the cavity into a first and a second sub-area. Only the second sub-area is above the opening, also meaning that only the volume of liquid in the second sub-area can flow into the sample tube.Type: GrantFiled: June 16, 2020Date of Patent: August 12, 2025Assignee: Sarstedt AG & Co. KGInventor: Mark Weinstock
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Patent number: 12151235Abstract: The invention relates to a separator for separating blood plasma and blood cells in a blood collection tube. The separator comprises a float with a first density and at least one passage opening. In addition to the float, the separator comprises a ballast with a second density that is greater than the first density. The total density of the separator, that is, the float and the ballast together, lies between the density of the plasma and the density of the cells in the blood. The float forms a valve together with the ballast. The float and the ballast are arranged so as to be movable relative to each other. In accordance with the invention, the ballast has at least one valve element for opening or closing a passage opening in the float.Type: GrantFiled: August 10, 2020Date of Patent: November 26, 2024Assignee: Sarstedt AG & Co. KGInventor: Mark Weinstock
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Patent number: 11591638Abstract: A method for stabilizing cell-free nucleic acids. The method includes providing a composition and applying the composition to a biological sample as a stabilizing agent for the cell-free nucleic acids contained in the biological sample. The composition includes at least one buffering compound that buffers to a pH value of 7 or below, at least one anticoagulant and urotropin in aqueous solution.Type: GrantFiled: July 30, 2018Date of Patent: February 28, 2023Assignee: Sarstedt AG & Co. KGInventors: Martin Kämper, Tim Kinitz
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Patent number: 11498252Abstract: A method for producing a well or a well strip made of plastic, as used in the pharmaceutical industry in microtiter systems is presented. The wells typically have undercuts and the well strips are connected to each other by connecting ribs. In order to produce a well with a larger undercut height or a well strip with higher connecting ribs, as the case may be, the method provides that the plastic, which is initially still liquid, is pressed through a portion of a runner which is arranged in a slider and out of the slider into a cavity of an injection mold.Type: GrantFiled: August 30, 2018Date of Patent: November 15, 2022Assignee: SARSTEDT AKTIENGESELLSCHAFT & CO.KGInventor: Mark Weinstock
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Patent number: 11439331Abstract: A device for making available sample carriers includes a tube with a receiving chamber for a plurality of sample carriers. The receiving chamber is delimited, at its front end, by a holding means for individualized release of the sample carriers and, at its rear end, by a plunger for exerting a force on the sample carriers. The holding means is elastic. To prevent a plurality of sample carriers being released at the same time from the tube, a plurality of fins are mounted on the plunger. The fins are mutually offset in the circumferential direction of the plunger. The offset arrangement of the fins has the effect that, under the action of the force, the plunger is pressed into the interior of the tube by in each case only a predefined ejection stroke. The ejection stroke is adapted to the length or the diameter of one of the sample carriers.Type: GrantFiled: June 29, 2017Date of Patent: September 13, 2022Assignee: Sarstedt AG & Co. KGInventor: Mark Weinstock
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Publication number: 20220202328Abstract: A sealing cap seals a sample tube for receiving a liquid, in particular blood. The sealing cap includes a cavity delimited by a membrane and a base having an opening that can be sealed by a non-return valve. In order to reduce the volume of liquid which, during centrifugation of the sample tube sealed by the sealing cap, flows out of the sealing cap through the then open opening into the sample tube, the cavity of the sealing cap has a separating wall that divides the cavity into a first and a second sub-area. Only the second sub-area is above the opening, also meaning that only the volume of liquid in the second sub-area can flow into the sample tube.Type: ApplicationFiled: June 16, 2020Publication date: June 30, 2022Applicant: Sarstedt AG & Co. KGInventor: Mark WEINSTOCK
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Patent number: 11273440Abstract: A separator separates a first from a second phase of a liquid in a tubular container. The separator has a float made of elastic material having a circumferential sealing edge and at least one ballast fastened to the underside of the float. The density of the ballast is greater than the density of the float and the density of the entire separator lies in a value range between the density of the first phase and the density of the second phase of the liquid. In order to securely prevent penetration of parts of the second phase of the liquid into the region above the separator within the tubular container, when the separator moves into the sealing position and is positioned there, the sealing edge of the float is formed at a predetermined distance greater than zero above the center of gravity of the entire separator.Type: GrantFiled: April 25, 2018Date of Patent: March 15, 2022Assignee: SARSTEDT AKTIENGESELLSCHAFT & CO. KGInventors: Mark Weinstock, Christian Wegener, Ulrich Karrenberg
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Patent number: 11241686Abstract: A separator for separating a first from a second phase of a liquid in a tubular container has an elastic float with a circular sealing edge for sealing engagement with the inside of the tubular container in a sealing position. At the underside of the float, a ballast is attached. The density of the ballast is greater than the density of the float and the density of the entire separator is in a range between the density of the first phase and the density of the second phase of the liquid. The float has a local constriction and, in the area of the constriction, a membrane.Type: GrantFiled: April 25, 2018Date of Patent: February 8, 2022Assignee: SARSTEDT AKTIENGESELLSCHAFT & CO.KGInventors: Mark Weinstock, Christian Wegener, Ulrich Karrenberg
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Patent number: 11241685Abstract: A separator for separating a first from a second phase of a liquid in a tubular container includes a float made of elastic material having a circumferential sealing edge and at least one ballast fastened to the underside of the float. The density of the ballast is greater than the density of the float and the density of the entire separator lies in a value range between the density of the first phase and the density of the second phase of the liquid. In order to ensure an unrestricted light inflow of the liquid into volume regions of the container lying below the separator in the initial position, the float is designed disk-shaped; and that the ballast is designed in the form of a plurality of fingers extending away from the underside of the disk-shaped float, distributed at its edge.Type: GrantFiled: April 25, 2018Date of Patent: February 8, 2022Assignee: SARSTEDT AKTIENGESELLSCHAFT & CO. KGInventors: Mark Weinstock, Christian Wegener, Ulrich Karrenberg
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Publication number: 20210283599Abstract: A separator separates a first from a second phase of a liquid in a tubular container. The separator has a float made of elastic material having a circumferential sealing edge and at least one ballast fastened to the underside of the float. The density of the ballast is greater than the density of the float and the density of the entire separator lies in a value range between the density of the first phase and the density of the second phase of the liquid. In order to securely prevent penetration of parts of the second phase of the liquid into the region above the separator within the tubular container, when the separator moves into the sealing position and is positioned there, the sealing edge of the float is formed at a predetermined distance greater than zero above the center of gravity of the entire separator.Type: ApplicationFiled: April 25, 2018Publication date: September 16, 2021Applicant: SARSTEDT AKTIENGESELLSCHAFT & CO.KGInventors: Mark Weinstock, Christian Wegener, Ulrich Karrenberg
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Patent number: 11118174Abstract: The invention relates to a composition for stabilizing the total nucleic acids from whole blood, in particular RNA, and to a process for stabilizing the total nucleic acids from whole blood for subsequent isolation and at the same time serves for the disruption of cells so that cellular nucleic acids in the state at contacting the composition, especially at the point of time of blood collection, are released and are maintained stable in respect of quality and concentration and can be isolated subsequently. Therein, the composition is characterized in that it especially prevents the degradation and new synthesis of RNA in whole blood, into which it is mixed. The isolation of RNA by contacting the mixture of the aqueous composition and blood with an adsorption agent can be made directly from the complete mixture of the aqueous composition with blood, i.e. e.g. without precipitation and separation of nucleic acids from the mixture, optionally after a storage, during which the mixture is e.g.Type: GrantFiled: February 10, 2017Date of Patent: September 14, 2021Assignee: SARSTEDT AG & CO. KGInventor: Rainer Schuster
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Publication number: 20210106989Abstract: A separator for separating a first from a second phase of a liquid in a tubular container has an elastic float with a circular sealing edge for sealing engagement with the inside of the tubular container in a sealing position. At the underside of the float, a ballast is attached. The density of the ballast is greater than the density of the float and the density of the entire separator is in a range between the density of the first phase and the density of the second phase of the liquid. The float has a local constriction and, in the area of the constriction, a membrane.Type: ApplicationFiled: April 25, 2018Publication date: April 15, 2021Applicant: SARSTEDT AKTIENGESELLSCHAFT & CO.KGInventors: Mark Weinstock, Christian Wegener, Ulrich Karrenberg
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Publication number: 20210046402Abstract: The invention relates to a separator for separating blood plasma and blood cells in a blood collection tube. The separator comprises a float with a first density and at least one passage opening. In addition to the float, the separator comprises a ballast with a second density that is greater than the first density. The total density of the separator, that is, the float and the ballast together, lies between the density of the plasma and the density of the cells in the blood. The float forms a valve together with the ballast. The float and the ballast are arranged so as to be movable relative to each other. In accordance with the invention, the ballast has at least one valve element for opening or closing a passage opening in the float.Type: ApplicationFiled: August 10, 2020Publication date: February 18, 2021Applicant: Sarstedt AG & Co. KGInventor: Mark Weinstock
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Publication number: 20200352498Abstract: The invention relates to a device (100) for making available sample carriers (200-n). It consists mainly of a tube (110) with a receiving chamber (112) for receiving a plurality of the sample carriers, wherein the receiving chamber is delimited, at its front end, by a holding means (120) for individualized release of the sample carriers and, at its rear end, by a plunger (130) for exerting a force (F) on the sample carriers. According to the invention, said holding means is elastic, in order to release or eject in each case only the frontmost or lowermost sample carrier (200-1) from the tube under the effect of the force (F) on the plunger (130). In order to prevent a plurality of sample carriers being released at the same time from the tube under the action of said force, a plurality of fins (140) are mounted on the plunger, which fins (140) are mutually offset in the circumferential direction (U) of the plunger (130).Type: ApplicationFiled: June 29, 2017Publication date: November 12, 2020Applicant: Sarstedt Akteingesellschaft & Co. KGInventor: Rainer SCHUSTER
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Publication number: 20200262120Abstract: A method for producing a well or a well strip made of plastic, as used in the pharmaceutical industry in microtiter systems is presented. The wells typically have undercuts and the well strips are connected to each other by connecting ribs. In order to produce a well with a larger undercut height or a well strip with higher connecting ribs, as the case may be, the method provides that the plastic, which is initially still liquid, is pressed through a portion of a runner which is arranged in a slider and out of the slider into a cavity of an injection mold.Type: ApplicationFiled: August 30, 2018Publication date: August 20, 2020Applicant: SARSTEDT AKTIENGESELLSCHAFT & CO.KGInventor: Mark Weinstock
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Publication number: 20200197929Abstract: A separator for separating a first from a second phase of a liquid in a tubular container includes a float made of elastic material having a circumferential sealing edge and at least one ballast fastened to the underside of the float. The density of the ballast is greater than the density of the float and the density of the entire separator lies in a value range between the density of the first phase and the density of the second phase of the liquid. In order to ensure an unrestricted light inflow of the liquid into volume regions of the container lying below the separator in the initial position, the float is designed disk-shaped; and that the ballast is designed in the form of a plurality of fingers extending away from the underside of the disk-shaped float, distributed at its edge.Type: ApplicationFiled: April 25, 2018Publication date: June 25, 2020Applicant: SARSTEDT AKTIENGESELLSCHAFT & CO.KGInventors: Mark Weinstock, Christian Wegener, Ulrich Karrenberg
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Patent number: 8333711Abstract: The invention relates to a blood taking device (1), in particular, for newborn babies and small children or small animals, comprising a blood taking vessel (2), provided on the front end thereof with a cannula (5) with a sharpened tip (4), whereby a porous, gas-permeable limiting element (8) which automatically stops the flow of taken blood, is arranged by pressing in the blood taking vessel (2) in a defined position. The rear end of the blood taking vessel (2) is sealed by a plug (11) which may be temporarily opened for taking blood (11), which dispenses the taken blood by means of a stroke running in a sealed manner in the blood taking vessel (2), which empties under pressure at least a part amount of the blood retained before the limiting element (8).Type: GrantFiled: April 21, 2005Date of Patent: December 18, 2012Assignee: Sarstedt AG & Co.Inventor: Walter Sarstedt
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Patent number: 8096958Abstract: The invention relates to a blood-collection device for newborn babies and infants, comprising a cannula, which is provided with a blood inlet and outlet and is located in a holder (2) that has a grip region (7). Said collection device is equipped with a bow-shaped bridging element (6) that connects the grip region to the holder.Type: GrantFiled: February 4, 2005Date of Patent: January 17, 2012Assignee: Sarstedt AG & CoInventor: Walter Sarstedt
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Patent number: 7951090Abstract: The invention relates to a cannula, preferably equipped with a cannula holder for, in particular a blood sampling device, which comprises a pivotable protective housing (102) for a free end of the cannula. Said protective housing (102) is closed on the periphery except for a cannula insertion opening (8) provided between opposing side walls. Said insertion opening is produced by at least one pair of lamella (8a, 8b), formed on the side walls, the lamella tapering towards one another in the manner of a funnel and forming an expandable funnel slot. The protective housing (102) comprises two housing parts which can be inserted into each other. The inner housing (2a) comprises the pair of lamella (8a, 8b) and an outer housing (11), which surrounds the inner housing (2a), is embodied as a sleeve that is less elastic than the inner housing (2a).Type: GrantFiled: March 16, 2007Date of Patent: May 31, 2011Assignee: Sarstedt AG & CoInventor: Walter Sarstedt
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Patent number: D968644Type: GrantFiled: June 4, 2021Date of Patent: November 1, 2022Assignee: SARSTEDT AG & Co. KGInventor: Paul Schatilov