Silicone rubber rhinoplasty prosthesis and manufacturing method thereof

Abstract

The invention discloses a silicone rubber rhinoplasty prosthesis and a manufacturing method thereof. The silicone rubber rhinoplasty prosthesis comprises a nasal dorsum part, a nasal tip part and a nasal columella part. The nasal tip part is curved, and the nasal dorsum part and the nasal columella part are connected to two ends of the nasal tip part respectively; the nasal dorsum part, the nasaltip part and the nasal columella part each have a three-dimensional mesh structure, and the whole silicone rubber rhinoplasty prosthesis is integrally formed by three-dimensional printing and the whole is in an L shape. According to 3D CT data or 3D photography data of a human nose, and with combination of needs of a patient and an operation scheme, the silicone rubber rhinoplasty prosthesis is customized by 3D printing of silicone rubber. The operation effect can be predicted in advance, accurate and personalized effects are achieved, the deviation caused by doctor sculpting technology, aesthetics and other subjective factors can be reduced, at the same time, the operation time can be saved, the prosthesis and a nasal tissue have good matching property, the displacement and shaking afterimplantation of the prosthesis are reduced, and the silicone rubber rhinoplasty prosthesis can meet the needs of elasticity modulus of different parts of the nose.

Description

technical field [0001] The invention relates to a silicone rhinoplasty prosthesis and a manufacturing method thereof, belonging to the field of medical device manufacturing. Background technique [0002] At present, in the cosmetic surgery of rhinoplasty in the world and in China, the most used rhinoplasty prosthesis is a silicone rubber prosthesis. The silicone rubber material is harmless to the human body, has good biocompatibility, is soft and firm, and will not deteriorate for a long time. At present, the clinical use is to make rhinoplasty silicone rubber into a certain type of prosthesis, sterilize it and pack it, and then the doctor will choose a type of prosthesis that is close to the demand according to the specific situation of each patient, open the sterile package and put it on. The operating table, and then sculpt the prosthesis according to the needs of the patient and the experience of the doctor, and then use it for surgery. [0003] The traditional silicon...

AI Technical Summary

Problems solved by technology

However, in the existing materials and technical methods, the surgical effect cannot be predicted in advance, and is affected by subjective factors such as the experience of the surgeon. Postoperative complications are high, including: (1) The prosthesis is easy to shift: before implantation, the doctor uses The separation of the implanted cavity by the tissue forceps is too small to meet the size requirements of the implanted prosthesis, and if it is too large, there will be extra space after the prosthesis is implanted, which may easily cause the prosthesis to deviate after implantation. In addition, the silicone rubber The filling material is an inert material with a solid structure, which cannot form a firm biological fixation with the surrounding tissue, and is prone to dislocation if it exists in the body for a long time; (2) The matching degree is unstable: the current silica gel and expanded body need to be checked by the doctor during the operation. Manual engraving, the matching degree of the prosthesis and the patient is directly related to the doctor's engraving technique, and the engraving effect of the prosthesis is unstable; (3) Silicone prosthesis exposed: due to the hard texture of the silicone prosthesis and the manual engraving by the doctor, resulting in Improper appearance of the prosthesis, too hard end of the prosthesis, and too sharp sides of the prosthesis may lead to prosthesis exposure; (4) Unsuitable matching of silicone: different parts of the bridge of the nose have different elastic moduli. It is solid silicone, which cannot effectively adapt to the different elastic modulus of different nose bridges; (5) Silicone prosthesis is prone to capsular contracture: due to the immune reaction, a layer of capsule will form on the surface of the silicone prosthesis, causing capsular contracture; Nasal deformity will be formed, resulting in unnatural postoperative appearance; (6) Silicone prosthesis is easy to transmit light; after the silicone prosthesis is implanted in the human body, light transmission occurs when viewed from the outside of the skin, which affects the postoperative effect; (7) Surgery It is impossible to predict the effect of the operation before the operation: before the operation, both the doctor and the patient hope to see the effect of the prosthesis directly, and the adjustment can be made according to the needs of the patient before the operation, but the traditional prosthesis cannot do it; (8) The effect of the operation cannot be objective Specialization and precision: Affected by subjective factors such as the surgeon’s experience, aesthetics, and sculpting techniques, the surgical effects of experienced doctors and beginners are quite different; (9) Waste of materials; In most cases, material reduction methods are used, such as engraving removal or laser printing removal during the operation, resulting in waste of materials

Images