A novel three-dimensional printed vacuum bell for pectus excavatum treatment: a preliminary study
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(2020) 15:240
RESEARCH ARTICLE
Open Access
A novel three-dimensional printed vacuum bell for pectus excavatum treatment: a preliminary study Xicheng Deng1*, Peng Huang1, Jinwen Luo1, Jinghua Wang1, Liwen Yi1, Guangxian Yang1, Siping He2, Xun Li3 and Shiting Xiang3
Abstract Objective: Conservative treatment with a vacuum bell (VB) for pectus excavatum (PE) has now been gradually popularized as an alternative to surgery. We describe our initial experience with a novel three dimensional (3D) printed VB device. Methods: Prospectively collected data of all patients who started using a 3D printed VB in 2018 at our institution were analyzed. Linear and logistic regressions were used to identify factors associated with effectiveness of device usage. Results: In total, forty-two patients with a median age of 3.6 years were treated with the device. The median follow-up duration was 11.1 months and the mean initial Depth Ratio (DR) was 0.129. There were no permanent sequelae from side effects. Thirty patients with at least one follow-up body scan data showed varying improvement (z = − 4.569, p = 0.0000). Linear regression suggested that longer usage improved outcomes (R2 = 0.235, p = 0.014). By logistic regression there was a trend of younger ages and less initial DR for better improvement though neither was statistically significant (p = 0.086, 0.078, respectively). Conclusion: Our initial experience has shown the 3D printed VB may be as effective as other conventional VBs and could be used as an alternative to surgical treatment for selected patients with PE. More experience and studies with this type of VB are needed to demonstrate its superiority with regard to the 3D printing design and optimal timing and indication for use. Keywords: Pectus excavatum, Vacuum bell, 3D printed
Background The vacuum bell (VB) has established its role in the treatment of pectus excavatum (PE) in the last 20 years [1–6] as an alternative to surgery it has been extensively reported by Haecker, et al. [1–3]. And then its usefulness has been confirmed by other authors [4]. However, all their VBs are premade with fixed sizes and shape. In this study, we tried to incorporate the unique configuration of the chest wall
deformity of each and every individual for the manufacture of a VB. We started to use a three dimensional (3D) printed VB bespoke for every patient since 2018. To the best of our knowledge, this is the first one of its kind incorporating 3D technique. Here we report our initial experience with this novel VB and short-term follow-up results.
Methods The manufacture of a 3D printed VB
* Correspondence: [email protected] 1 Deaprtment of Cardiothoracic Surgery, Hunan Children’s Hospital, No. 86 Ziyuan Road, Changsha 410007, Hunan, China Full list of author information is available at the end of the article
The 3D printed VB (Kenvoxel Co.,Ltd. Guangzhou, China) is manufactured involving the optical body surface scan steps and has been described in detail in our
© The Author(s). 2020 Open Access This article is licensed under a
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