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| 국가/구분 | United States(US) Patent 등록 |
|---|---|
| 국제특허분류(IPC7판) |
|
| 출원번호 | US-0662265 (1991-02-28) |
| 발명자 / 주소 |
|
| 출원인 / 주소 |
|
| 인용정보 | 피인용 횟수 : 311 인용 특허 : 0 |
A programmable infusion pump and controller for automatically determining the interval between pump activations necessary to produce a substantially linear rate of increase or decrease in fluid flow, during the administration of fluids to a patient. The infusion pump contains a user interface, with
A programmable infusion pump and controller for automatically determining the interval between pump activations necessary to produce a substantially linear rate of increase or decrease in fluid flow, during the administration of fluids to a patient. The infusion pump contains a user interface, with a keyboard to enter infusion volume, infusion period, and taper period. When the pump is turned on, the previous infusion parameters are retrieved from non-volatile memory. If the user attempts to alter the infusion parameters so as to violate the “rate too high”or “rate too low”criteria of the system, an alarm sounds and the user interface displays the “next best answer”possible. The pump also allows the user to initiate the taper sequence at any time during plateau or continuous fluid delivery.
A programmable infusion pump for administering fluid to patients, comprising: input means for receiving (i) the total volume of fluid to be administered to the patient during the infusion cycle, (ii) an infusion period over which the fluid is to be administered, and (iii) a taper infusion period ove
A programmable infusion pump for administering fluid to patients, comprising: input means for receiving (i) the total volume of fluid to be administered to the patient during the infusion cycle, (ii) an infusion period over which the fluid is to be administered, and (iii) a taper infusion period over which the rate of fluid infusion is to change linearly; pump means for administering a fixed volume of fluid to the patient per pump activation; means for determining the variable time interval between pump activations necessary to produce a substantially linear rate of change of fluid flow during said taper infusion period constrained by said total volume of fluid to be administered during said infusion cycle, the means for determining said variable time interval between pump activations comprising; a) means for determining the total number of pump activations required to deliver the volume of fluid scheduled for said taper infusion period; b) means for dividing said taper infusion period into a plurality of steps, wherein each step corresponds to a variable quantity of fluid pumped per fixed time interval; c) means for dividing each of said steps into a number of partial pump activations so that the number of partial pump activations per step is a whole number, thereby defining a new unit of measure where each pump activation corresponds to a whole number of partial pump activations; d) means for sequentially totaling said plurality of partial pump activations on a step-by-step basis over said taper infusion period and determining the variable time intervals where said total number of partial activations equals or exceeds one complete pump activation, the means for sequentially totaling further including means for retaining the number of partial pump activations in excess of one complete pump activation and adding said number of partial pump activations in excess of one complete pump activation to the next total of partial pump activations in the sequence; e) means for determining said variable time interval between pump activations according to when said total number of partial pump activations equals one complete pump activation; and pump control means for initiating said pump means in accordance with said variable time interval between pump activations to produce said substantially linear rate of change.
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