3D printed knee implants

Customisable knee implants? 3D printing’s got that covered! 🙂

http://boston.cbslocal.com/…/bedford-company-using-3d-prin…/

Knee replacement X-ray. (WBZ-TV)

BOSTON (CBS) – “We see a lot of knee injuries in here,” says Jeff Dosdall, a personal trainer and co-owner of Bodyscapes in Wellesley. “They’ve got arthritis. They’ve got overuse injuries, and the knees start to wear out on you.” Even for some people in their 30s and 40s, and a lot of folks end up having surgery.

Knee replacement is the most common joint replacement worldwide. Providing huge relief, most of the time.

Dr. Philipp Lang, CEO and co-founder of ConforMIS, a medical device company in Bedford, says about a quarter of patients aren’t happy with their results. “They have pain, limited range of motion, the knee doesn’t feel natural,” says Dr. Lang.

So ConforMIS is changing that. It’s the only company in the world that is making knee replacement implants that are completely tailored to each individual patient.

Using CT imaging, special computer software, and 3D printer technology, scientists produce a unique knee implant and customized surgical instruments, designed for one patient and only that patient.

“This fits exactly to your patient,” explains Dr. Lang. “It brings back your individual knee, the shape of your knee, the curvature of your knee and should move like a normal knee.”

No two knees are the same and off the shelf implants come in a limited number of sizes. A bad fit, says orthopedic surgeon Dr. Joseph Czarnecki of Excel Orthopedics in Woburn, can cause more bleeding and swelling. “I’ve seen more with the ConforMIS knee that’s there’s a quicker return to range of motion for most patients,” says Dr. Czarnecki. “There doesn’t tend to be as much swelling and not as much pain in the hospital because this is matched to their bone.”

Mary Cowles of Westminster had a traditional knee replacement back in 2001 and a ConforMIS implant in her other knee just three months ago. She says there’s no comparison. “Time-wise in the hospital, less time,” Cowles says. “Physical therapy was much easier. I got movement so much faster. If I didn’t see the scar on it, I would assume it was my normal knee.”

The ConforMIS implants are covered by insurance and generally aren’t more expensive. The company says they plan to make other joints, like shoulders and hips. And they’re the first company to receive FDA approval for 3D printing in metal.

BOSTON.CBSLOCAL.COM
by Dr. Mallika Marshall, WBZ-TV | October 17, 2014 11:21 PM
Advertisements

3D printed baby’s heart

Another medical marvel brought about by 3D printing! A two-week old infant’s life saved as a 3D printed replica of the baby’s heart was used to assist in complicated heart surgery! 🙂

http://www.independent.co.uk/…/3d-printed-heart-saves-babys…

Surgeons at a New York hospital have credited 3D printing with helping to save the life of a 2-week-old baby who required complicated heart surgery.

Surgeons at a New York hospital have credited 3D printing with helping to save the life of a 2-week-old baby who required complicated heart surgery.

Using MRI scan data, Morgan Stanley Children’s Hospital in New York City 3D printed a copy of the child’s heart, which was both riddled with holes and structured unusually.

Surgery was going to be complicated and dangerous, but this 3D printed heart provided the surgeons the opportunity to study the organ, and develop a detailed surgery strategy.

“The baby’s heart had holes, which are not uncommon with CHD, but the heart chambers were also in an unusual formation, rather like a maze,” Dr Emile Bacha, who performed the surgery,told Connecticut local media.

“In the past we had to stop the heart and look inside to decide what to do. With this technique, it was like we had a road map to guide us. We were able to repair the baby’s heart with one operation.”

The project was funded by Matthew’s Hearts of Hope, a Connecticut –based foundation.

They have said that another 3D printed heart is in the making, with details to follow in the next month.

Marie Hatcher, the foundation’s founder, told The Independent:“This is a game changer for CHD babies with complicated heart anatomy.

Normally the first time the surgeon sees the heart is when the chest is open, now they have the ability to plan out the surgery ahead of time while looking at a 3 D Heart of the baby or child’s heart.”

This is yet another example of 3D printing coming to the fore of cutting-edge medical technology. Just the other day, Kentucky surgeon Erle Austin also credited 3D printing with improving the odds of succeeding in the most difficult surgeries, reports Wired.

“I’m using 3D printing to help me understand a complicated heart,” he told Maker Faire in Rome.

Like the team at Morgan Stanley, Austin had used the technology to inform his approach to heart surgery on a young child at Kosair Children’s Hospital.

“If I went in and did surgery, took off the front of the heart and did irreparable damage, the child would not survive.”

Using an experimental version of the Makerbot Replicator 2, Austin printed a copy of the heart in three parts.

He said: “Because I have an identical reconstruction I can take off the front of the heart and see inside of it and make a plan as to how I’m going to direct the flow of blood and move the obstruction in the heart.”

INDEPENDENT.CO.UK

by ZACHARY DAVIES BOREN | 06 October 2014

3D systems medical modeling

A must-read for all medical enthusiasts!

See how 3D printing is fast cementing its reputation at the forefront of medical technology; An operation on a newborn child that would have taken another 6 years of waiting time with traditional methods, as well as an overview of how 3D printing has advanced the field of surgery

http://3dprint.com/10195/3d-printing-operating-room/

med-2

During the recent 3D Systems’ 2014 Investor & Analyst Day, one of the key issues addressed was the new frontiers in medical technology. At 3D Systems, healthcare appears to be the fastest growing market. The management team stated its plans to build up its leadership in this field. The company plans to invest and expand its virtual surgical planning (VSP®) capabilities, broaden its range of implants and surgical tool manufacturing and develop new personalized medical devices, such as the recently introducedbespoke scoliosis brace.

In April, 3D Systems announced the acquisition of Medical Modeling, a leading provider of personalized surgical treatments and patient specific medical devices, including virtual surgical planning (VSP®). The VSP is a service-based approach to personalized surgery that combines expertise in medical imaging, surgical simulation and additive manufacturing. It allows for planning maxillofacial surgical procedures in a virtual environment and transferring that plan to the patient using innovative models, templates and surgical guides manufactured with 3D printers. Recently, it was used by Dr. Oren Tepper, Assistant Professor of Surgery at New York’s Montefiore Medical Center and a pioneer in virtual surgical planning. He performed surgery on a 3-week-old girl named Jayla Vargas who had difficulty breathing due to her tiny jaw. Traditionally, in such cases, she would have had to wait 6 years until she was large enough for the operation. However, with the help of VSP technology, Dr. Tepper successfully fixed Jayla’s jaw.

At the Investor & Analyst Day, Dr. Oren Tepper was the guest speaker and he discussed the current uses and future applications of 3D printing in plastic surgery. Dr. Oren Tepper explained how technology is important in plastic surgery as creativity and innovation are involved in building, restoring and renovating the human body. Therefore, practitioners embrace this technology. Over the last several years, training and skills have been the key points in technical innovation related to plastic surgery. Advanced techniques have been used and cutting edge technology has been incorporated. For the moment, all of these advancements are focused on the operating room itself. Nonetheless, this technology is bringing greater planning and precision to operating rooms, enabling surgeons to perform successful operations that were previously impossible.

At the moment, 3D Systems and Medical Modeling has had a tremendous impact on bone reconstruction, but it is still a relatively small impact in the field. The untapped potential, especially in soft tissue reconstruction, is enormous.

“This technology eliminates surprises, minimizes complications and improves the precision of surgery.”

According to the doctor, the first real advancement was the CT scanner, which allowed plastic surgeons to look at bodies via the CT scans. Next, the skull was 3D printed so it could be used as a reference. The process started building stereolithographic models of the skulls so it was possible to study them in any direction and to practice surgery. That was the first generation, just printing the existing anatomy of the patient. Now, it is possible to plan a surgery on a computer for surgical simulation. Therefore, surgeons can move the bone structures where they want them to be and they can develop on the computer and 3D print guides and jigs which they sterilize and bring to the operating room.

The first study about virtual surgical planning and printing was published 5 years ago. Regarding facial fractures, Dr. Tepper used an example at the conference of a lower jaw fractured in multiple pieces, on a young woman named Jayla. Due to limited exposure of the surgeon and the lack of reference points, it was difficult to put the jaw back together. The phases to follow during the process of reconstruction are:

  • Phase 1. Virtual planning: Reduce fracture and establish occlusion on the computer.
  • Phase 2. Modeling: Create jigs and guides that can be taken to the operating room.
  • Phase 3. Surgering. Place the 3D printed jigs on the patient in the operating room and use them to put the facial fractures together.
  • Phase 4. Analysis: Achieve what doctors have automatically set out to do surgically.

Regarding Jayla’s operation, Dr. Tepper emphasized that the procedure used was safer and cheaper than the traditional practice, a tracheostomy, which is a surgically created opening in the windpipe to allow proper breathing. However, virtual surgical planning is only used on a small percentage of operations today. When asked about the challenges he faced and the solutions that he came up with, Dr. Tepper highlighted four reasons why 3D printing was so useful to him in the operating room:

  • The device size. He wasn’t sure if the device was small enough that it would fit under the lower jaw but this technology solved that problem.
  • The underdevelopment of the patient’s bone. Jayla’s bone was so under developed that he needed to place the device exactly at the same parallel vector. Again, thanks to this computer technology he could perfectly do just that.
  • The critical structures. The lower jaw is not just simply made of bone. Thanks to the computer, it was possible to identify the different structures and stay away from those critical structures.
  • The bone width. This technology allowed him to predict the size of the bone so he knew exactly where to place the device.

Dr. Tepper believes in the technology’s future growth potential as it will make the existing infrastructure better and faster and it will represent a tremendous opportunity in expanding markets. At the moment, there is no communication between plastic surgeons and 3D printing companies. On the contrary, it is an opportunity for real time communication so that companies like 3D Systems could have a role in the operating room. Dr. Tepper affirmed that surgeons will one day look back on non-VSP procedures as crude and primitive.

How long will it be before this type of technology is commonplace within the operating room?  Let’s hear your thoughts in the 3D printing and surgery forumthread on 3DPB.com.

3DPRINT.COM
by  | JULY 27, 2014