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Method of driving constant volume pump, device for driving constant volume pump, vaporizer and anesthesia device

A driving method and a technology of a driving device, which can be applied to pump devices, mixing methods, and medical equipment, etc., can solve problems such as pulsation, and achieve the effects of reducing pulsation, suppressing reduction, and realizing cost reduction

Active Publication Date: 2016-11-30
ACOMA MEDICAL IND CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In other words, it can be seen that when the flow rate of the fresh gas is low and the rotation speed of the quantitative pump 56 (stepping motor 55) is relatively slow, the influence of pulsation obviously occurs

Method used

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  • Method of driving constant volume pump, device for driving constant volume pump, vaporizer and anesthesia device
  • Method of driving constant volume pump, device for driving constant volume pump, vaporizer and anesthesia device
  • Method of driving constant volume pump, device for driving constant volume pump, vaporizer and anesthesia device

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Embodiment Construction

[0049] Hereinafter, the present invention will be described based on the illustrated embodiment. First, refer to figure 1 The driving device and driving method of the quantitative pump 16 according to the embodiment of the present invention will be described.

[0050] figure 1 It is an operation explanatory diagram of the driving device of the quantitative pump 16 according to the embodiment of the present invention. figure 1 (A)~ figure 1 (D) is a structural view schematically showing a cross section of the plunger 16A of the quantitative pump 16 in the axial direction and a cross section in a direction perpendicular to the axis of the plunger 16A. In addition, figure 1 (E) is a timing chart showing the suction period and the discharge period of the quantitative pump 16. figure 1 (F) is a timing chart of the drive pulse of the stepping motor 15 output from the motor driver 14.

[0051] In the same way as in the past, in this embodiment, a quantitative pump 16 is also used as...

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Abstract

To provide a method of driving a constant volume pump, a device for driving a constant volume pump, a vaporizer and an anesthesia device with which it is possible to reduce pulsations of the constant volume pump, reduce the cost of the device, and reduce the size of the device. This device for driving a constant volume pump is provided with a constant volume pump 16 which is coupled to a stepping motor 15, includes an eccentric mechanism for changing a rotating motion of the motor 15 into a reciprocating motion of a plunger 16A, and performs constant volume feed of anesthetic by means of intake and discharge thereof resulting from a volumetric change within a cylinder 16D, due to the reciprocating motion of the plunger 16A. A control unit 12 calculates an intake and discharge period T of the constant volume pump 16 on the basis of a set anesthetic gas concentration and a set fresh gas flow rate, and sets a discharge period T2 in said period T to be longer than an intake period T1. Further, by controlling the speed of rotation of the stepping motor 15, the movement speed of the plunger 16A during the discharge period is maintained to be constant.

Description

Technical field [0001] The present invention relates to a driving method of a quantitative pump, a driving device of a quantitative pump, a vaporizer and an anesthesia device, in particular to a driving method of a quantitative pump and a driving method of a quantitative pump that can reduce the pulsation of the quantitative pump and reduce the cost and miniaturization of the device Devices, vaporizers and anesthesia devices. Background technique [0002] The structure of the currently used anesthesia device (refer to Non-Patent Document 1) is as follows Figure 5 As shown in (a). in Figure 5 In (a), the structure of the anesthesia device includes an operating unit 51, a control unit 52, an anesthetic bottle 53, a motor driver 54, a stepping motor 55, a quantitative pump 56, a vaporization chamber 59, an anesthetic identification sensor 61, an anesthetic Detection sensor 62 and fresh gas flow sensor 63. In addition, the anesthetic in the anesthetic bottle 53 is sent to the intak...

Claims

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Application Information

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IPC IPC(8): F04B49/06A61M16/18B01F3/02B01F15/02B01F15/04F04B13/00B01F23/10
CPCA61M16/18F04B13/00F04B49/06A61M16/186F04B9/04F04B11/0041F04B49/20A61M2016/0039A61M2205/3653A61M2205/502A61M2205/6054F04B2201/0202F04B2203/0209F04B23/02A61M16/0057A61M16/01A61M2205/3365B01F23/10B01F35/80B01F35/7174B01F35/712B01F35/7176A61M16/104A61M16/10A61M16/12A61M16/14F04B9/02F04B9/00F04B7/04A61M2016/0033
Inventor 冲田一成
Owner ACOMA MEDICAL IND CO LTD
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