IPC분류정보
국가/구분 |
United States(US) Patent
공개
|
국제특허분류(IPC7판) |
|
출원번호 |
US-0087542
(2013-11-22)
|
공개번호 |
US-0147349
(2014-05-29)
|
우선권정보 |
EP-12 007 916.5 (2012-11-23) |
발명자
/ 주소 |
|
출원인 / 주소 |
|
인용정보 |
피인용 횟수 :
0 인용 특허 :
0 |
초록
▼
A multichannel pipette with a base body, several spigots for clamping up pipette tips, arranged parallel side by side in a row, protruding from the base body and mounted on the base body so as to be movable in their longitudinal direction, at least one displacement equipment with a displacement cham
A multichannel pipette with a base body, several spigots for clamping up pipette tips, arranged parallel side by side in a row, protruding from the base body and mounted on the base body so as to be movable in their longitudinal direction, at least one displacement equipment with a displacement chamber and a displacement member dislocatable therein, wherein the displacement chamber is connected to connection holes in the spigots in order to eject or aspirate air through openings of the connection holes in lower ends of the spigots, a first drive device, connected to the displacement member and adapted to dislocate the displacement member in the displacement chamber, first spring elements, engaging on the spigots and on the base body, wherein the spigots are dislocatable upward in their longitudinal direction from a starting position against the spring action of the first spring elements.
대표청구항
▼
1. A multichannel pipette comprising: a base body (5),several spigots (26) for clamping up pipette tips (89), arranged parallel side by side in a row, protruding from the base body (5) and mounted on the base body so as to be movable in their longitudinal direction,at least one displacement equipmen
1. A multichannel pipette comprising: a base body (5),several spigots (26) for clamping up pipette tips (89), arranged parallel side by side in a row, protruding from the base body (5) and mounted on the base body so as to be movable in their longitudinal direction,at least one displacement equipment (23) with a displacement chamber (24) and a displacement member (25) dislocatable therein, wherein the displacement chamber (23) is connected to connection holes (28) in the spigots (26) in order to eject or aspirate air through openings (29) of the connection holes (28) in lower ends of the spigots (26),a first drive device (6), connected to the displacement member (25) and adapted to dislocate the displacement member (25) in the displacement chamber (24),first spring elements (35) engaging on the spigots (24) and on the base body (5), wherein the spigots (26) are dislocatable upward in their longitudinal direction from a starting position against the spring action of the first spring elements (35),at least one stop element (49, 50, 65), having a defined stop position in which the spigots (26) protrude downward from the stop element (49, 50, 65),wherein the first spring elements (35) are designed such that by defined clamping forces which can be applied by clamping up pipette tips (89) onto the spigots (26), the spigots (26) can be dislocated towards the stop element (49, 50, 65) in the stop position in such a way that the pipette tips (89) hit the stop element (49, 50, 65), andan ejection equipment for detaching pipette tips (89) from the spigots (26), comprising an ejector (43), which comprises contact elements (49, 50, 65), means for mounting the ejector (43) on the base body (5) so as to be slidable in the longitudinal direction of the spigots (26) and a drive device connected to the ejector (43) and which is adapted to dislocate the ejector downward in the longitudinal direction of the spigots (26) from out a starting position, in which pipette tips (89) can be clamped up onto the spigots (26) until they strike the stop element (49, 50, 65) in the stop position, in order to squeeze pipette tips (89) off from the spigots (26) by the contact elements (49, 50, 65),wherein the ejector (43) has the contact elements (49, 50, 65) on different ejector parts (44, 63) and is designed such that in the downward dislocation of the ejector (43), at least after the impact of at least one first contact element (49, 50) on pipette tips (89), at least one second contact element (65) pursues the first contact element (49, 50) in order to squeeze one or several pipette tips (89) off from the spigots (26) by the first contact element (49, 50) at first, and thereafter one or several pipette tips (89) by the second contact element (65). 2. The multichannel pipette according to claim 1, wherein the first and second ejector parts (44, 63) are board-shaped, the first contact element (49, 50) is at least one first bar, protruding horizontally from the lower edge of the first ejector part (44) and having one or plural first through hole(s) (51, 51), the second contact element (65) is at least one second bar, protruding horizontally from the lower edge of the second ejector part (63) and having one or plural second through hole(s) (66), and the spigots (26) penetrate the first and second through holes (51, 52, 66). 3. A multichannel pipette according to claim 1, wherein the ejector (43) has a first ejector part (44) which is connected to the drive device, and a second ejector part (63), wherein the first ejector part (43) and the second ejector part are guided by means for guiding (72, 73, 74, 75) so as to be dislocatable relative to each other in the longitudinal direction of the spigots (26), the first ejector part (44) with the first contact element (49, 50) and the second ejector part (63) with the second contact element (65) are arranged in the same height in the starting position of the ejector (43), and first take-along means (56) exist on the first ejector part (44) as well as second take-along means (68) on the second ejector part (63), which are spaced apart from each other in the starting position of the ejector (43) and can be moved against each other along the means for guiding (72, 73, 74, 75) in the downward dislocation of the ejector (43) by dislocation of the first ejector part (44) and the second ejector part (63) relative to each other, in order to dislocate the second ejector part (63) downward synchronously with the first ejector part (44) when the first and the second take-along means (56, 68) hit each other. 4. The multichannel pipette according to claim 3, wherein the contact elements (49, 50, 65) are stop elements and occupy the stopping position in the starting position of the ejector (43). 5. A multichannel pipette according to claim 3, wherein the distance between the first and second take-along means (56, 68) in the vertical direction is 0.1 to 3 mm, preferably 0.5 to 1.5 mm in the starting position of the ejector (43). 6. A multichannel pipette according to claim 3, wherein the first ejector part (44) has a first deepening (48) on its lower edge with first guide elements (74, 75) on two lateral edges, and wherein the second ejector part (63) is inserted into the first deepening (48) of the first ejector part (44) and is guided so as to be dislocatable in the longitudinal direction of the spigots (26) on second guide elements (72, 73) on two lateral edges on the first guide elements (74, 75) of the first ejector part (44). 7. The multichannel pipette according to claim 6, wherein the first take-along means (56) are formed by the upper edge of the deepening (48), and the second take-along means (68) are formed by the upper edge of the second ejector part (63). 8. A multichannel pipette according to claim 6, wherein the second ejector part (63) is held on the first ejector part (44) by snap connection means or other connection means (57, 70) which have a clearance in the longitudinal direction of the spigots (26). 9. The multichannel pipette according to claim 8, wherein the snap connection means have an eyelet (57) on the first ejector part (44), and a snap hook (70) engaging with clearance in the direction of the spigots (26) into the eyelet (57) on the second ejector part or vice versa. 10. A multichannel pipette according to claim 1, wherein the ejector (43.1, 43.2) has a rigid first ejector part (44) and an at least partially rigid second ejector part (63), and the first ejector part (44) with the first contact element (49, 50) and the second ejector part with the second contact element (65) are arranged in the same height in the starting position of the ejector (43.1, 43.2), so that when the ejector parts with the contact elements hit the pipette tips (89), the rigid first ejector part (44) squeezes pipette tips off from spigots at first, and the at least partially soft-elastic second ejector part (63) is blocked and elastically compressed by pipette tips (89), and after an increase of the force for compressing the at least partially soft-elastic second ejector part (63) to a value exceeding the force for ejecting the pipette tip (89) which rests on the second contact element (65), the pipette (89) tips resting on the second contact element (65) are ejected. 11. A multichannel pipette according to claim 1, wherein the means for dislocatable mounting (55, 76) of the ejector (43) have at least one guide slot (55) in the ejector (43) extending in the longitudinal direction of the spigots (26), and at least one guide element (76), fixedly connected to the base body (5) and engaging into the guide slot (55). 12. A multichannel pipette according to claim 1, wherein the ejector (43) has an actuating element (59) on the topside, protruding upward in the direction of the spigots (26). 13. A multichannel pipette according to claim 1, wherein in its starting position, the ejector rests with the first and second stop elements (49, 50, 65) or another ejector part on a counter stop element (32), arranged fixedly on the base body (5), which prevents the ejector from a dislocation farther upward. 14. The multichannel pipette according to claim 13, wherein the counter stop element (32) is a bottom wall of the base body (5) having third through openings, through which the spigots (26) project downward and on which the stop elements (49, 50, 65) rest at the bottom in the starting position. 15. A multichannel pipette according to claim 1, wherein the ejector (43) is dislocatable downward against the spring action of a second spring element (82) which engages on the ejector (43) and on the base body (5). 16. A multichannel pipette according to claim 1, wherein the number of the spigots (26) which project from the first stop element (49, 50) is the same as the number of the spigots (26) which project from the second stop element (65).
※ AI-Helper는 부적절한 답변을 할 수 있습니다.