A screw driving device for a syringe pump
A technology of a driving device and a syringe pump, applied in the field of medical equipment, can solve the problems of large power loss of the rotary drive mechanism and large power consumption of the rotary drive mechanism, and achieve the effects of reducing power consumption and increasing load thrust
Active Publication Date: 2018-07-17
SHENZHEN ZHONGKE BIOMEDICAL ELECTRONICS CO LTD
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Problems solved by technology
[0002] In the prior art screw drive device, since the screw nut sleeved on the screw rod is subjected to relatively large resistance when pushing the load forward, the power consumption loss of the rotary drive mechanism is relatively large. For example, when pushing the syringe pump During the injection process of the piston rod, due to the existence of the liquid pressure at the bottom of the piston, the rotary drive mechanism must have a large power to drive the nut on the screw rod to push the piston rod forward. Moreover, due to the long-term injection, the Make the rotary drive mechanism generate large power consumption
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[0017] The technical solutions of the present invention will be further described below in conjunction with the accompanying drawings and through specific implementation methods.
[0018] Such as figure 1 As shown, a screw driving device for a syringe pump includes a screw 1, a screw nut 2 matched with the screw 1, a bracket 3 matched with both ends of the screw 1, and a One end of the screw rod 1 is used to drive the rotation drive mechanism of the screw rod 1 to rotate, and also includes an elastic thrust device arranged on one side of the screw nut 2 to push the screw nut 2 to move forward, as a preferred embodiment of the present invention In an embodiment, the elastic thrust device includes a compression spring 5, and the compression spring 5 is sleeved on the screw rod 1 on one side of the screw nut 2, that is, the screw rod is sleeved on one side of the screw nut 2 and one end of the bracket 3 1, and one end of the bracket is close to the rotary drive mechanism, prefer...
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The invention discloses a screw rod driving device for an injection pump. The screw rod driving device comprises a screw rod, a screw nut, a bracket, a rotary driving mechanism, an elastic pushing device and / or an elastic tightening device, wherein the screw nut is matched with the screw rod, the bracket is matched with the two ends of the screw rod, the rotary driving motor is arranged at one end of the screw rod and is used for driving the screw rod to rotate, the elastic pushing device is arranged at one side of the screw nut and is used for driving the screw nut to move forwards, and / or the elastic tightening device is arranged at the other side of the screw nut and is used for pulling the screw nut to move forwards. When the rotary driving mechanism drives the screw rod to rotate, the screw nut on the screw rod can effectively reduce the load capacity of the screw nut during forward movement under the action of the elastic pushing device and / or the elastic tightening device, and the power consumption of the rotary driving mechanism is effectively decreased. The screw rod driving device has the advantages that the power consumption of the rotary driving mechanism can be decreased, and the load thrust is increased.
Description
technical field [0001] The invention relates to the technical field of medical instruments, in particular to a screw driving device for an injection pump. Background technique [0002] In the prior art screw drive device, since the screw nut sleeved on the screw rod is subjected to relatively large resistance when pushing the load forward, the power consumption loss of the rotary drive mechanism is relatively large. For example, when pushing the syringe pump During the injection process of the piston rod, due to the existence of the liquid pressure at the bottom of the piston, the rotary drive mechanism must have a large power to drive the nut on the screw rod to push the piston rod forward. Moreover, due to the long-term injection, the This causes the rotary drive mechanism to generate relatively large power consumption. Contents of the invention [0003] The purpose of the present invention is to provide a screw drive device that can effectively reduce the power consump...
Claims
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IPC IPC(8): A61M5/315
CPCA61M5/145A61M2005/14506
Inventor 谭永宏
Owner SHENZHEN ZHONGKE BIOMEDICAL ELECTRONICS CO LTD