Reducing bite force by multi-directional tolerance control

The infusion pumping mechanism includes a motor, a plurality of pump fingers, and an opposing plate. Each of the pump fingers includes a body portion and a head portion. The head includes a tip configured to contact and engage a conduit mounted in the pumping mechanism. The opposed plate includes an anvil having a plurality of force concentrators. One of the plurality of force concentrators corresponds to a respective one of the plurality of pump fingers. In addition, the force concentrator includes a concentrating surface configured to contact and engage the conduit. The force concentrator is aligned with the tip of the respective pump finger such that the tip and the force concentrator provide pressure to two opposite sides of the conduit and at least partially engage the conduit as the finger points to and contacts the conduit. 输注泵送机构包括马达、多个泵指和对置板。泵指中的每一个指包括本体部和头部。头部包括尖端，尖端被构造成接触并咬合被安装在泵送机构中的管道。对置板包括具有多个力集中器的砧。所述多个力集中器中的一个力集中器对应于所述多个泵指中的一个相应泵指。此外，力集中器包括被构造成接触并咬合管道的集中表面。该力集中器与该相应泵指的尖端对准，使得随着指指向管道并接触管道，该尖端和该