It is composed of two high pressure syringe pumps which can make liquids flowing up to 4 cm3/mn.
Nonionic contrast medium ultravist 300 (300 mgI/ml was injected via a superficial antebrachial vein with pressure syringe at a flow rate of 4 ml/s and a total volume of 50 ml.
Once a deep stage of anaesthesia was reached, mice were intratracheally instilled by means of MicroSprayer Aerosolizer system (MicroSprayer Aerosolizer- Model IA-1C and FMJ-250 High Pressure Syringe, Penn Century, USA) with 100 μg of PM1 in 100 μL of isotonic saline solution, or 100 μL of isotonic saline solution (sham) as previously reported [ 4, 10, 14].
The device allows to reproduce in vivo conditions as good as possible, i.e. axial in situ pre-stretch, 100 mmHg intraluminal pressure, 37 °C Tyrode solution, balloon inflation without external constraints using a high-pressure syringe and contrast medium.
The high-pressure stainless steel syringe placed in the high-pressure syringe pump was used to inject the polymer solution via the PEEK capillary tube with a 0.5-mm ID; the polymer solution flow rate was 0.05 ml/min.
CO2 was injected into the cell using a precision pressure regulator at low pressure (0.07 MPa) and using a high-pressure syringe pump (Model 500D, ISCO Inc., USA) and pump controller (Series D, ISCO Inc., USA) at high pressure (2.8 and 5.6 MPa).
The main apparatus consisted of a nonconductive PEEK (6.00-cm ID, 15.00-cm OD, ±565-ml volume) autoclave including cartridge heaters coupled with an electric fan, a high-voltage power supply, a high-pressure pump, a high-pressure syringe pump, a back-pressure regulator, and a stainless steel syringe with a volume of 8 ml.
Open image in new window Figure 1 Schematic diagram of the electrospinning system under high-pressure CO 2. (1) High-pressure syringe pump, (2) high-pressure pump, (3) PEEK autoclave inclusive heater, (4) nozzle, 5) fiber collector, (6) high-voltage power supply, (7) BPR, (8) cylindernder, (9).
Patients with radiotherapy-induced vasculitis could not accept the bolus-injection pressure and the rate of high-pressure syringe.
In this study, we administered the contrast agent using a high-pressure syringe to achieve a rapid injection.
Before the CT scan, the diatrizoate was given intravenously using a high-pressure syringe into the tail vein.
