Patient-specific craniofacial implants
First Claim
1. A method of designing a facial or craniofacial implant for filling an existing bony void in a cranial and/or facial region of a patient and for replacing facial soft tissue comprising:
- creating a three-dimensional model of the cranial and/or facial region providing regions of intact skull including a zygomatic process of temporal bone and zygomatic-frontal suture, temporal fossa, and lateral orbital rim and having the bony void; and
creating an implant model configured to replace the bony void in the cranial and/or facial region of the three-dimensional model, the implant model comprising material for replacing the bony void and an extension of material that goes from the bony void to above an intact skull region of the three-dimensional model corresponding to an area of the cranial and/or facial region of the patient expected to suffer soft tissue atrophy as an onlay extension around the zygomatico-frontal suture along the temporal fossa abutting the lateral orbital rim of the three-dimensional model; and
trimming the implant model using a vector spanning between the zygomatic process of the temporal bone and the zygomatic-frontal suture of the lateral orbital rim of the three-dimensional model so that the implant model is configured to be positioned over an area of the three-dimensional model corresponding to a location of a scarred down temporalis muscle attached to the brain and dura of the patient so that the facial or craniofacial implant based on the implant model leaves the temporalis muscle undisturbed and restores aesthetic symmetry and camouflages missing muscle and/or fat volume to the cranial and/or facial region.
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Accused Products
Abstract
Disclosed herein are patient-specific facial or craniofacial implants structured for filling bone voids in the cranium and face as well as for simultaneously providing soft tissue reconstruction and/or augmentation for improved aesthetic symmetry and appearance of face and skull. Pterional or temporal voids or defects generally result from a chronic skull or lateral facial deformity along with a compromised temporalis muscle or soft tissue distortion from previous surgery. When muscle atrophy occurs in the pterion or temporal face, temporal hollowing deformity generally results where there would be soft tissue but for the atrophy. The patient-specific temporal implants with dual-purpose herein are configured to have an augmented region adjacent the temporal region of the face and cranium in order to prevent and/or correct any such temporal hollowing deformity.
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Citations
9 Claims
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1. A method of designing a facial or craniofacial implant for filling an existing bony void in a cranial and/or facial region of a patient and for replacing facial soft tissue comprising:
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creating a three-dimensional model of the cranial and/or facial region providing regions of intact skull including a zygomatic process of temporal bone and zygomatic-frontal suture, temporal fossa, and lateral orbital rim and having the bony void; and creating an implant model configured to replace the bony void in the cranial and/or facial region of the three-dimensional model, the implant model comprising material for replacing the bony void and an extension of material that goes from the bony void to above an intact skull region of the three-dimensional model corresponding to an area of the cranial and/or facial region of the patient expected to suffer soft tissue atrophy as an onlay extension around the zygomatico-frontal suture along the temporal fossa abutting the lateral orbital rim of the three-dimensional model; and trimming the implant model using a vector spanning between the zygomatic process of the temporal bone and the zygomatic-frontal suture of the lateral orbital rim of the three-dimensional model so that the implant model is configured to be positioned over an area of the three-dimensional model corresponding to a location of a scarred down temporalis muscle attached to the brain and dura of the patient so that the facial or craniofacial implant based on the implant model leaves the temporalis muscle undisturbed and restores aesthetic symmetry and camouflages missing muscle and/or fat volume to the cranial and/or facial region. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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Specification