动物心脏起搏器 EP 6877，体积小重量轻，专为实验动物设计，用于心衰及心律失常研究。脉冲振幅宽度和频率可调的，这可提供高频率搏动，高达460次脉冲每分钟。在过去10年中，在美国这个起搏器已成功地用于清醒的狗和兔子心衰研究。该器配有延长线和心肌起搏导联。

操作说明：

电池要求：一块标准的9号碱性电池

输出信号：

脉冲振幅宽度和频率可调节，范围如下：

信号振幅：**8 vdc，*小0.8 vdc

脉冲宽度：**4.msec，*小0.2msec

脉冲频率：**460 pulses per min（间隔130msec）*小120 pulses per min（间隔500msec)

生理指标：

尺寸：长6.0 cm宽5.3 cm高=2.1 cm总重量：无电池26.0 gm，带电池70.5gm

The ‘Animal Pacer’ model EP 6877 is small and lightweight in design for animal use only. Pulse amplitude width and rate are adjustable， which provides high rate pacing up to 460 pulses per min. In the last 10 years， this pacer had successfully been used in pacing-Induced heart failure in the conscious dog and rabbit in USA. The device comes complete with extension cable and myocardial pacing lead.

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:

Height=6.0 cm; Width=5.3 cm; Depth=2.1 cm

Total Weight (without battery) 26.0 gm

(with battery-Duracell) 70.5gm