图共 11个 表共 2
    • 图  FIG. 144.  FIG. 144.

      Figure FIG. 144..  FIG. 144.

    • 图  1  尿道保温控制装置及尿道保温管样品

      Figure 1.  Urethral thermal insulation controller appratus and insulation pipe sample

    • 图  2  尿道三维保温模型及其网格划分示意图

      Figure 2.  Heater model and 3-D mesh generation diagram of urethral

    • 图  3  体外实验装置布局示意图

      Figure 3.  Layout of the experiments in vitro

    • 图  4  不同壁厚时尿道管壁处温度变化

      Figure 4.  Temperature variation at urethral surface with different wall thicknesses

    • 图  5  不同粗细电阻丝对尿道管壁处温度的影响

      Figure 5.  Influences of the different resistance wires on urethral surface temperature

    • 图  6  两把冷刀时温度场和电压变化

      Figure 6.  Variation of temperature and voltage with two cryoprobes interfered

    • 图  7  水热和电加热保温管在冷刀介入消融时的温度变化

      Figure 7.  Temperature variation of electrical urethral heater and urethral warmer with cryoprobe interfered

    • 图  8  P=7 W时电加热尿道保温装置冷冻循环后保温装置表面温度变化情况

      Figure 8.  Urethral heater surface temperature variation after cycling of cryoablation at P=7 W

    • 图  9  P=9 W时电加热尿道保温装置冷冻循环后保温装置表面温度变化情况

      Figure 9.  Urethral heater surface temperature variation after cycling of cryoablation at P=9 W

    • 图  10  P为11 W时电加热尿道保温装置冷冻循环后保温装置表面温度变化情况

      Figure 10.  Urethral heater surface temperature variation after cycling of cryoablation at P=11 W

    • Typesk/(W·m−1·K−1)Cb/(J·kg−1·K−1)σ/(S·m−1)ρ/(kg·m−3)
      −125 ℃≤T <
      −22 ℃
      −22 ℃≤T <
      −2 ℃
      −2 ℃≤T <
      −40 ℃
      −125 ℃≤T <
      −2 ℃
      −2 ℃≤T <
      0 ℃
      0 ℃≤T <
      5 ℃
      5 ℃≤T <
      50 ℃
      Φ0.10 mmΦ0.15 mmΦ0.30 mm
      Gelatin−0.009 1T+
      1.220 6
      −0.045 8T+
      0.413 5
      0.50521.926T+
      400 1.9
      16 973T+
      37 904
      −6 807.2T +
      37 904
      −9.657 1T +
      3 916.3
      0.3330.3330.3331 060
      Constantan20.920.920.94104104104102.51×1055.24×1055.05×1058 900
      Silicagel0.350.350.35270270270270InfinityInfinityInfinity1 314

      表 1  仿真分析中明胶,康铜及硅胶参数

      Table 1.  Simulation analysis parameters of gelatin, constantan and silica gel

    • Power/WDT/mmFinal temperatme/℃
      0 ℃−22 ℃
      1121.7217.91−7.6
      921.8618.10−9.3
      722.0218.40−16.2
      522.1918.75−22.3
      Off25.7019.00−26.5

      表 2  不同功率下,0 ℃和−22 ℃等温线处最小直径DT及尿道管壁表面终温

      Table 2.  Minimum diameter (DT) of the 0 ℃ and −22 ℃ isotherm and the urethral surface final final temperature heated with different powers