# US 2013/0239706 A1 · Pipetting Device and Multi-Channel Pipetting Device > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2013/0239706 A1 - Document ID: US20130239706A1 - Status: Published application - Kind: A1 - Application number: 13/782,787 - Filed: 2013-03-01 - Published: 2013-09-19 - Earliest claimed: 2012-03-01 - Assignees: Eppendorf AG - Applicants: Eppendorf AG - Inventors: Holger LINK - Web page: https://patentgrep.com/patent/US20130239706A1 ## CPC - B01L 3/021: {Pipettes, i.e. with only one conduit for withdrawing and redistributing liquids} - B01L 3/0217: {of the plunger pump type} - B01L 2300/0861: Configuration of multiple channels and/or chambers in a single devices - G01N 35/1065: {Multiple transfer devices} - B01L: CHEMICAL OR PHYSICAL LABORATORY APPARATUS FOR GENERAL USE - G01N: INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES (measuring or testing apparatus or processes other than immunoassay, involving enzymes or microorganisms C12M, C12Q) ## Abstract The invention relates to a pipetting device for pipetting at least one fluid laboratory sample into at least one pipetting vessel, said device having a main body extending along an axis direction, at least one connecting section, to which at least one pipetting vessel can be connected by an at least partially axial connecting movement along the positive axis direction, wherein the at least one connecting section is connected to the main body so as to be movable at least in the axis direction, a spring mechanism, by which the at least one connecting section is supported with spring loading on the main body at least in a first operating state of the pipetting device, such that the at least one connecting section, during the connecting movement, can perform a spring-assisted deflection movement along the positive axis direction, wherein an auxiliary mechanism is provided on the pipetting device and is designed to act on the deflection movement of the at least one connecting section in at least a second operating state of the pipetting device, wherein the pipetting device is designed such that the user can alternately put it into the first operating state or the second operating state. The invention further relates to a multi-channel pipetting device. ## Claims ### Claim 1 Pipetting device (1; 10; 100) for pipetting at least one fluid laboratory sample into at least one pipetting vessel (9), said device having a main body (2; 12) extending along an axis direction, at least one connecting section (17; 117), to which at least one pipetting vessel can be connected by an at least partially axial connecting movement along the positive axis direction A, wherein the at least one connecting section is connected to the main body so as to be movable at least parallel to the axis direction A, a spring mechanism (18; 118), by which the at least one connecting section is supported with spring loading on the main body at least in a first operating state of the pipetting device, such that the at least one connecting section, during the connecting movement, can perform a spring-assisted deflection movement along the positive axis direction, characterized in that an auxiliary mechanism (16, 31; 131) is provided on the pipetting device and is designed to act on the deflection movement of the at least one connecting section in at least a second operating state of the pipetting device, wherein the pipetting device is designed such that the user can alternately put it info the first operating state or the second operating state. ### Claim 2 (depends on 1) Pipetting device according to claim 1, wherein the auxiliary mechanism has at least one auxiliary element (31; 131) which is arranged movably on the pipetting device such that it can be moved by the user at least between a first position and a second position on the pipetting device by an auxiliary movement, wherein the pipetting device is located in the first operating state in the first position, and wherein the pipetting device is located in the second operating state in the second position. ### Claim 3 (depends on 2) Pipetting device according to claim 2, wherein the auxiliary movement is directed at least partially perpendicularly with respect to the axis direction. ### Claim 4 (depends on 2, 3) Pipetting device according to claim 2 or 3, wherein the at least one auxiliary element is mounted movably on the main body. ### Claim 5 (depends on 2, 3, 4) Pipetting device according to claim 2, 3 or 4, having an electrical drive mechanism in order to perform the auxiliary movement. ### Claim 6 (depends on 2, 3, 4, 5) Pipetting device according to one of claims 2 to 5, having an electrical control mechanism in order to control the auxiliary movement at least partially or completely electrically. ### Claim 7 Pipetting device according to at least one of the preceding claims, wherein the auxiliary mechanism is designed as a locking mechanism, by means of which the deflection movement is blocked substantially completely in the second operating state. ### Claim 8 (depends on 2, 7) Pipetting device according to claims 2 and 7, wherein the auxiliary element is a bolt element (31; 131). ### Claim 9 (depends on 8) Pipetting device according to claim 8, wherein, the at least one connecting section has at least one first engaging section and the bolt element has at least one second engaging section, wherein the at least one first engaging section and the at least one second engaging section do not engage in each other in the first operating state, and the at least one first engaging section and the at least one second engaging section do engage in each other in the second operating state and are arranged in a locking position. ### Claim 10 (depends on 9) Pipetting device according to claim 9, wherein the at least one first engaging section is a recessed section of the connecting section, and the at least one second engaging section is a projecting section of the bolt element. ### Claim 11 (depends on 1, 2, 3, 4, 5, 6) Pipetting device according to at least one of claims 1 to 6, wherein the auxiliary mechanism is designed such that, in the second operating state, the force F for deflecting the connecting section from its start position is greater in the second operating state than in the first operating state. ### Claim 12 (depends on 11) Pipetting device according to claim 11, wherein the auxiliary mechanism has a second spring mechanism which, in the second operating state, acts parallel to the spring mechanism of the pipetting device. ### Claim 13 (depends on 11, 12) Pipetting device according to claim 11 or 12, wherein the auxiliary mechanism is designed such that the force F is adjustable. ### Claim 14 Pipetting device according to at least one of the preceding claims, which is designed as a multi-channel pipetting device (10; 100). ### Claim 15 (depends on 14) Multi-channel pipetting device (100), in particular according to claim 14, for pipetting at least one fluid laboratory sample into at least one pipetting vessel (9), said device having a main body (114) extending along an axis direction A, at least two connecting sections (117), to which at least two pipetting vessels can be connected by an at least partially axial connecting movement along the positive axis direction, wherein the at least two connecting sections are connected to the main body so as to be movable at least parallel to the axis direction A, at least in a first operating state, a spring mechanism (118), by which the at least two connecting sections are supported with spring loading on the main body at least in a first operating state of the pipetting device, such that the at least two connecting sections, during the connecting movement, can perform a spring-assisted deflection movement along the positive axis direction, characterized in that an auxiliary mechanism (131) is provided on the pipetting device and is designed to be at least partially separable from the main body and is designed to counteract the deflection movement of the at least two connecting sections in at least a second operating state of the pipetting device in addition to the action of the spring mechanism. wherein the pipetting device is designed such that the user can alternately put it into the first operating state or the second operating state, and wherein the auxiliary mechanism, in the first operating state, is separated at least partially from the pipetting device and, in the second operating state, is not separated from the pipetting device. ### Claim 16 (depends on 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15) Use of the pipetting device according to claims 1 to 14 and/or of the pipetting device according to claim 15 in a medical, biological, biochemical and/or chemical laboratory.