we have some experiment about "hepatoprotective effect of some plant extract on mice" and we need to measure the mice blood pressure .
There are various companies that sell systems to measure BP in mice non-evasively through tail cuffs etc.
Kent Scientific - Coda monitor
Axiology labs - Biopac (NIBP Tail Cuff Systems provide two analog outputs: pressure and pulse. Systems incorporate a built-in pump that automatically inflates the blood pressure cuff to occlude the vessel in the tail of a rat or small animal. Once the pump reaches the inflation point it slowly deflates the cuff, providing a linear drop in pressure. A single control runs both the inflation and deflation cycles, making the system very user-friendly. Systems include one tail cuff sensor (9.5 mm , 11 mm, or 13 mm), one restrainer (mouse, small, medium, or large), and interface cables. Optional heater and MRI sensors also available.
NIBP250 Touchscreen LCD controls & displays data for local analysis and storage of systolic, diastolic, and mean BP values. Use as a stand-alone system or interface to BIOPAC or third-party A/D hardware
NIBP200 Interface to BIOPAC or third-party A/D hardware and computer
Used with BIOPAC electrodes, AcqKnowledge software, the MP150 data analysis and acquisition hardware platforms, transducers and other system components, NIBP systems are elements of a complete data acquisition and analysis system.)
Hi Abdollah
May be the following paper will be helpful for you.
Non-invasive blood pressure measurement in mice.
Abstract
Hypertension is a leading cause of heart attack, stroke, and kidney failure and represents a serious medical issue worldwide. The genetic basis of hypertension is well-established, but few causal genes have been identified thus far. Non-invasive blood pressure measurements are a critical component of high-throughput genetic studies to identify genes controlling blood pressure. Whereas this technique is fairly routine for blood pressure measurements in rats, non-invasive blood pressure measurement in mice has proven to be more challenging. This chapter describes an experimental protocol measuring blood pressure in mice using a CODA non-invasive blood pressure monitoring system. This method enables accurate blood pressure phenotyping in mice for linkage or mutagenesis studies, as well as for other experiments requiring high-throughput blood pressure measurement.
Attached article will solve your purpose.
Methods Mol Biol. 2009;573:45-55. doi: 10.1007/978-1-60761-247-6_3.