Table 2 Summary table of pharmacomechanical thrombolysis devices.
Device | Mechanism of action | Advantages | Disadvantages | Access type (sample size) | Clinical success | Technical success | 1 month patency rates | |||
---|---|---|---|---|---|---|---|---|---|---|
Primary | p-value | Secondary | p-value | |||||||
Angiojet Rheolytic System (Yang et al., 2012) | - Based on Venturi effect by high-speed saline jets, thrombus is sucked into the device and macerated | - 360 suction vortex which theoretically reduces number of passes | - May leave residual thrombus adherent to wall | 100% AVF (n=109) 33% upper arm | 76% | 77% | 70% | 0.78 | 76% | 1 |
Arrow–Trerotola percutaneous thrombectomy device (Yang et al., 2012) | - Fragmentation of clot is done via generation of hydrodynamic vortex created by high-speed rotating impeller or basket | - Simple - Low manufacturing costs - Better contact with thrombus through mechanical action |
- Causes significant endothelial denudation in native vessels | 100% AVF (n=106) 38% upper arm | 91% | 91% | 76% | 0.38 | 90% | 0.11 |
ClariVein catheter (Lim et al., 2017) | - Infusion of thrombolytic agents combined with a rotating catheter to augment the thrombolysis process | - Rapid rotational tip may allow cleaner removal of thrombus due to rheolytic effect of high-frequency spinning of eccentric tip | - Only studied in AVGs and not AVFs due to concern of endothelial injury from angulated tip - Rotating pin is smaller calibre and rotation speed is lesser as compared to Cleaner XT, hence may be less effective for large clots |
100% AVG (n=11) | 100% | 100% | Not measured | |||
Cleaner XT | - Mechanical declotting of access via rotating mechanism | - May be more appropriate for AVFs - Curated for smaller lumen vessels to allow easier manipulation and effective clot maceration |
- Limited data available so far | 12 AVF, 5 AVG (n=17) | 88% | 88% | 65% | 76% |