3D Printed piece of skull for Patches

Marking a potential breakthrough in cancer research, Veterinarians from the Ontario Veterinary College successfully 3D-printed a titanium plate for surgery on a dog's skull. Having a large cancerous tumor growing on her skull, a dachshund named Patches had it removed and replaced with a custom implant that like a puzzle piece fit into place perfectly. The difficult surgical procedure led by Dr. Michelle Oblak with Dr. Galina Hayes, demonstrates a huge potential for 3D-printing technology across many areas of the medical field.

‘the technology has grown so quickly, and to be able to offer this incredible, customized, state-of-the-art plate in one of our canine patients was really amazing,’ Dr. Oblak said.

Patches the dachshund had a large cancerous tumor growing on her skull, which was removed and replaced all images courtesy of the University of Guelph

At Ontario veterinary college, Dr. Oblak worked closely with a team specializing in RAPID (rapid prototyping of patient-specific implants for dogs), mapping the tumor’s size and location. Dr. Oblak created a 3D model of the dachshund’s head and tumor in collaboration with an engineer from Sheridan College's Centre for Advanced Manufacturing Design and Technologies, in order to ‘virtually’ perform the surgery, and see what would be left behind following the growth’s removal. ‘I was able to do the surgery before I even walked into the operating room,’ said Oblak, holding the 3D printed model of the dog’s skull with a detachable model of the tumor.

Dr. Oblak created a 3D model of the dachshund’s head and tumor in order to be able to ‘virtually’ perform the surgery

Once Dr. Oblak determined the dimensions of skull, she worked alongside 3D medical printing company ADEISS on developing a skull plate which would replace the part that needed to be removed. During the surgery, Oblak and Hayes had to replace about 70% of the top surface of the dog’s skull, leaving a large area of the brain unprotected. Typically surgeries of this kind are extremely difficult and lengthily — once the portion of skull is removed, surgeons must assess the damage and shape titanium mesh over the spot. in this case, the doctors fit the 3D-printed plate into place perfectly — a technique that will eliminate the need to model an implant in the operating room and significantly reduce patient risk.

The new technique will eliminate the need to model an implant in the operating room

'This is major for tumor reconstruction in many places on the head, limb prosthesis, developmental deformities after fractures and other traumas,’ said Oblak. ‘In human medicine, there is a lag in use of the available technology while regulations catch up. By performing these procedures in our animal patients, we can provide valuable information that can be used to show the value and safety of these implants for humans. These implants are the next big leap in personalized medicine that allows for every element of an individual’s medical care to be specifically tailored to their particular needs.’

Patches: Before and After surgery

Information provided by article by Nina Azzarello from Designboom

sep 26, 2018