![](https://s3images.coroflot.com/user_files/individual_files/611965_aaujmrig82thfesn_kqqkdben.png)
Weighting the glucose and sodium chloride for preparing the model of the cerebrospinal fluid.
![](https://s3images.coroflot.com/user_files/individual_files/611965_vrx35iustednidqutneituupy.png)
Preparing the red dye solution that will model the analgesic drug.
![](https://s3images.coroflot.com/user_files/individual_files/611965_ccwjlwdt6fdkykxkajhgt6mbs.png)
Experiment set-up including:
- new era syringe pump.
- erlenmeyer flask with the model CSF solution.
- fisher scientific IsoTemp 120 water bath filled with distilled water at 37 degrees. Celsius to simulate human body temperature conditions.
- spinal cord model crafted from PVC tubing, Buna-N Rubber and PU rod.
![](https://s3images.coroflot.com/user_files/individual_files/611965_qbhvngxbz5w5hh26h6icykoru.png)
Catheter tip penetrating inside the model spinal cord dura.
![](https://s3images.coroflot.com/user_files/individual_files/611965_x8ashlflvjosqwvj84gxe_6sb.png)
Dye dispersion inside the model CSF.
![](https://s3images.coroflot.com/user_files/individual_files/611965_yinsmcpq7mdjf_ushvwkyigie.png)
Experiment result 1: Variation of the travel distance with time for various bolus flow rates. Results confirm the hypothesis that as the bolus rate increases the travel distance with time also increases.
![](https://s3images.coroflot.com/user_files/individual_files/611965_kujxnqx6qqkgkgg27hhhtjcoy.png)
Experiment result 2: variation of the travel distance with the bolus flow rate for different travel duration. Results show that the maximum distance is achieved for a flow rate of approximately 160 uL/min suggesting an "optimum" bolus rate given the density of the model CSF.
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