Method for preparing tympanic membrane model and tympanic membrane engraving reference model

Abstract

The invention relates to a method for preparing a tympanic membrane model and a tympanic membrane carving model, comprising the following steps: (1) establishing a three-dimensional model of the auditory ossicles; (2) establishing a three-dimensional model of the ear canal; (3) drawing the boundary of the position of the tympanic membrane; ( 4) Obtain the shape of the tympanic membrane; (5) Obtain the reference mold for engraving the tympanic membrane; (6) 3D print the shape. Based on the 3D printing technology, the present invention accurately produces individualized three-dimensional solid models of the reconstructed tympanic membrane and tympanic membrane engraving reference models, which can accurately reflect the three-dimensional shape and size of the patient's tympanic membrane, and can be observed from multiple angles to determine whether the malleus handle is transplanted. The embedding position on the object can be applied to the repair of large perforation of the tympanic membrane under the ear endoscope, which can provide a meaningful reference template for customizing the tragus cartilage-perichondrium graft, and effectively realize the tragus-perichondrium graft during ear endoscopic surgery. Simulation of custom grafts to provide accurate models for intraoperative graft design.

Description

technical field [0001] The invention relates to a method for preparing a tympanic membrane model and a tympanic membrane carving reference model. Background technique [0002] Patients with chronic suppurative otitis media with large perforation of the tympanic membrane currently undergo endoscopic tragus cartilage-perichondrium repair surgery, but the surgery has certain limitations. For example, the lens is prone to fogging in the external auditory canal and needs to be cleaned repeatedly; In a certain space, the external auditory canal is narrow and the surgical field is small, the operation is difficult and time-consuming, especially after the tragus cartilage-perichondrium graft is removed during the operation, it needs to be carved into a suitable shape and size. In the past, the surgeon had to visually observe the shape of the patient's tympanic membrane under a microscope and size, and then sculpt the tragus cartilage in vitro according to the imagination and memory....

AI Technical Summary

Problems solved by technology

[0002] Patients with chronic suppurative otitis media with large perforation of the tympanic membrane currently undergo endoscopic tragus cartilage-perichondrium repair surgery, but the surgery has certain limitations. For example, the lens is prone to fogging in the external auditory canal and needs to be cleaned repeatedly; In a certain space, the external auditory canal is narrow and the surgical field is small, the operation is difficult and time-consuming, especially after the tragus cartilage-perichondrium graft is removed during the operation, it needs to be carved into a suitable shape and size. In the past, the surgeon had to visually observe the shape of the patient's tympanic membrane under a microscope and size, and then sculpt the tragus cartilage in vitro according to the imagination and memory. Carving the tragus cartilage lacks precise data guidance, and usually requires repeated implantation into the surgical cavity and multiple cuts to obtain a suitable graft. This operation is very cumbersome. It is time-consuming and prone to complications. If the graft is trimmed too much, it may lead to the failure of surgical implantation.

If a tympanic membrane model and a tympanic membrane engraving reference mold that basically conform to the shape and size of the patient's tympanic membrane can be constructed, as a reference for graft carving, the above problems can be completely avoided, but there is no relevant report in the existing literature on how to construct a tympanic membrane that is consistent with the shape and size of the patient's tympanic membrane. Basic tympanic membrane models and tympanic membrane engraving reference molds

Images