Application and efficacy analysis of tympanic cartilage shaping device in endoscopic type Ⅰ tympanoplasty
Objective:To study the feasibility and efficacy of using a tympanic cartilage shaping device in endoscopic type Ⅰ tympanoplasty.Methods:A tympanic cartilage shaper was designed and manufactured by measuring tympanic membrane dimensions with HRCT imaging for cutting and shaping cartilage to repair the tympanic membrane.From Au-gust 2019 to October 2021,66 patients(72 ears)with chronic suppurative otitis media in Xiangya Hospital underwent en-doscopic type Ⅰ tympanoplasty with this tympanic cartilage shaping device,and were observed the tympanic membrane healing and hearing recovery effect after surgery.Postoperative follow-up ranged from 3-24 months,with an average of 9 months.The data were analyzed by the SPSS 26.0 software.Results:According to the imaging measurements,tympanic pars tensa width(8.60±0.20)mm,height(8.64±0.19)mm,design and manufacture a cylindrical cartilage shaping de-vice with inner diameter 8.60 mm.After tympanoplasty,the healing rate of tympanic membrane was 100％;The aver-age air-bone gap before surgery was(23.10±7.33)dB,then(14.30±6.40)dB 1 month after surgery,which were sig-nificant reduced compared with those before surgery.The average air-bone gap was(14.30±6.40)dB 3 month after sur-gery compared with 1 month after surgery,the difference was also statistically significant(t=6.630,P＜0.05).Conclu-sion:The tympanic membrane cartilage shaper shaping cartilage in endoscopic tympanoplasty is simple,stable and relia-ble,which can reduce the time of graft cartilage processing,improve the efficiency of surgery,and restore the tympanic membrane morphology and function in the postoperative period.
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