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Abstract Objective To investigate the effects of Jailed balloon technique on the bifurcation lesions treated with main branch (MB) stent and provisional T- stent of side branch (SB). Methods The clinical data and coronary angiography recorded in DICOM format during coronary intervention were analyzed in 57 patients treated with MB stent and provisional T- stent of SB. The minimum luminal diameter (MLD) of MB lesions and SB ostium, bifurcation angle between MB and SB were measured before and after coronary procedure. The difference values of these parameters before and after the procedure were calculated and compared between Jailed bal oon and Jailed wire groups. Results 60 bifurcation lesions in 57 patients underwent MB stent implantation with the protection of SB by Jailed wire (39 cases) or Jailed bal oon (18 cases). SB occluded in 3 cases and TIMI flow reduced to 2 in 5 cases in Jailed wire group. SB occluded in 1 case in Jailed bal oon group. The difference value of SB ostial MLD before and after procedure was- 0.34±0.39 mm in Jailed wire group and 0.08±0.64 mm in Jailed bal oon group. There was significant difference between them (t=3.144, P<0.01). The angle between MB and SB reduced in Jailed wire group and increased in Jailed bal oon group after the procedure and the difference value between groups was significantly different[(- 3.82±9.04)°vs (3.54±7.76)°, t=3.102, P<0.01]. Conclusion Jailed balloon technique is in favour of avoiding SB compromise or occlusion during the treatment of bifurcation lesions with MB stent implantation and provisional T- stent of SB.
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