Holding device for locking the head of a syringe piston on a syringe pump pusher
First Claim
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1. Holding device for locking the piston head of a syringe on the pusher of a syringe pump, comprising:
- arms integral each with a pinion pivotable about its axis and movable in translation so as to drive the corresponding arm in a same movement between a rest position in which the arms are “
closed” and
“
pressed”
against the pusher and an open position in which the arms are “
opened” and
“
removed”
from the pusher, the translation being performed before the rotation during the movement toward the open position or in reverse order toward the rest position,a control member, and(i) first means for converting a portion of the movement of the control member by transmitting it to at least one of the pinions in the form of a translation movement and (ii) second means for converting a portion of the movement of the control member by transmitting it to the at least one pinion in the form of a rotation movement,wherein the means for converting and transmitting a portion of the movement of the control member into a translation movement of the at least one pinion are locked in translation,wherein the first and second means are constituted by means for conveying both a translation movement and a rotation movement to the at least one pinion in the movement toward the open position and in the movement toward the closed position,wherein the translation movement is promoted over the rotation movement in the movement toward the open position and the rotation movement is promoted over the translation movement in the movement toward the rest position.
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Abstract
A holding device for locking the head of a syringe piston on a pusher has arms connected to respective pinions pivotable and translationally displaceable so that the corresponding arm is involved in the same motion between a rest position, in which the arms are closed and pressed against the pusher, and an open position, in which the arms are opened and remote therefrom, the translation is carried out prior to rotation during the movement toward the open position or in reverse order toward the rest position. The holding device also has a control member and means for converting a part of the control member movement by transmitting it to at least one pinion as a translation movement, which are translationally locked, and means for converting a part of the control member movement by transmitting it to at least one pinion as a rotation movement.
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Citations
20 Claims
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1. Holding device for locking the piston head of a syringe on the pusher of a syringe pump, comprising:
-
arms integral each with a pinion pivotable about its axis and movable in translation so as to drive the corresponding arm in a same movement between a rest position in which the arms are “
closed” and
“
pressed”
against the pusher and an open position in which the arms are “
opened” and
“
removed”
from the pusher, the translation being performed before the rotation during the movement toward the open position or in reverse order toward the rest position,a control member, and (i) first means for converting a portion of the movement of the control member by transmitting it to at least one of the pinions in the form of a translation movement and (ii) second means for converting a portion of the movement of the control member by transmitting it to the at least one pinion in the form of a rotation movement, wherein the means for converting and transmitting a portion of the movement of the control member into a translation movement of the at least one pinion are locked in translation, wherein the first and second means are constituted by means for conveying both a translation movement and a rotation movement to the at least one pinion in the movement toward the open position and in the movement toward the closed position, wherein the translation movement is promoted over the rotation movement in the movement toward the open position and the rotation movement is promoted over the translation movement in the movement toward the rest position. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20)
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Specification
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Current AssigneeFresenius Vial SAS (Else Kröner-Fresenius-Stiftung)
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Original AssigneeFresenius Vial SAS (Else Kröner-Fresenius-Stiftung)
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InventorsRochette, Francois
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Primary Examiner(s)Sirmons, Kevin C.
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Assistant Examiner(s)LEE, BRANDY SCOTT
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Application NumberUS11/814,133Publication NumberTime in Patent Office2,176 DaysField of Search604/131, 604/228, 604/229US Class Current604/228CPC Class CodesA61M 5/1456 with a replaceable reservoi...A61M 5/1458 Means for capture of the pl...
