Identification of the appropriate fixation site to avoid peritoneal catheter migration based on a mechanical analysis

Figures & data

Figure 1. Finite element model.

Figure 2. The numbers of involute nodes.

Figure 3. Calculation result and fitting formula.

Table 1. The relationship between fixation point and catheter displacement.

N	1	2	3	4	5	6	7	8	9	10
L	0.65	1.30	1.95	2.60	3.25	3.90	4.55	5.20	5.85	6.50
Δ	18.50	16.03	13.81	11.84	10.11	8.63	7.40	6.41	5.67	5.18
N	11	12	13	14	15	16	17	18	19	20
L	7.15	7.80	8.45	9.10	9.75	10.40	11.05	11.70	12.35	13.00
Δ	4.44	4.19	3.68	3.21	3.17	3.08	3.00	2.98	2.72	2.54

N is the node number, L is the distance between fixation point and the interior polyester cuff (cm), and Δ is the catheter top displacement (cm) calculated from the finite element model.

Figure 4. Simulation the maximal catheter displacement distance and the fixation site on a flat surface.