動(dòng)物心臟起搏器 EP 6877，體積小重量輕，專為實(shí)驗(yàn)動(dòng)物設(shè)計(jì)，用于心衰及心律失常研究。脈沖振幅寬度和頻率可調(diào)的，這可提供高頻率搏動(dòng)，高達(dá)460次脈沖每分鐘。在過去10年中，在美國(guó)這個(gè)起搏器已成功地用于清醒的狗和兔子心衰研究。該器配有延長(zhǎng)線和心肌起搏導(dǎo)聯(lián)。
操作說明：
電池要求：一塊標(biāo)準(zhǔn)的 9號(hào)堿性電池
輸出信號(hào)：
信號(hào)振幅：max8 vdc，min0.8 vdc
脈沖頻率：max 460 pulses per min（間隔130msec）min120
pulses per min（間隔500msec)
生理指標(biāo)：
尺寸：長(zhǎng)6.0
cm寬5.3 cm高=2.1
cm
總重量：無電池26.0
gm，帶電池70.5gm
Operational Specifications:
Battery requirement: one standard size 9 volt alkaline battery.
Output signal specifications –
Pulse amplitude width and rate are adjustable between
the following values:
Signal Amplitude: Max = 8.0 vdc ; Min = 0.8 vdc
Pulse wide: Max =4.msec; Min = 0.2msec
Pulse Rate: Max=460 pulses per min(interval=130msec)
Min=120 pulses per min (interval= 500msec)
Battery life: In excess of 72 days when tested under continuous
operation with a 100 ohm load, 1.0 msec pulse width and 300 pulses
per min and a fresh battery to an endpoint of 2.8
volts. Output amplitude on day 1 was 8.0 volts DC and 2.8
volts on day 72. Battery life in actual use will vary
depending on a variety of conditions, hut should be in excess of 60
days in most cases. The output pulse width and rate did not
change over the 72 day test period. Always start a new
experiment with a fresh battery. Output voltage will fall
during prolonged use, slowly at first, and more rapidly as the
battery drains. This causes need for regular monitoring of the
animal and perhaps slight adjustments of the output amplitude
to ensure the cardiac rhythm remains entrained.
Physical Specifications
Dimensions of polyethylene Case:
