Medical & Dental

Kidney transplant using 3D printing marks a medical first in Belfast

A 3D printed replica kidney, from UK-based 3D printed medical model company axial3D, has facilitated a crucial transplant operation and simultaneously improved the life of the organ donor.

Surgeons at Belfast City Hospital in Northern Ireland planned the complete excision of a Bosniak 2F renal cyst using a kidney replica. The operation itself was the first such procedure performed without the need for revision surgery in Ireland.

The now-healthy kidney of donor William Fenton was then transplanted to his daughter Pauline, who had previously been living with end-stage kidney disease and was wholly reliant on dialysis.

An operation with many complexities

William Fenton was a suitable living donor for his daughter but was blood group incompatible, meaning that his kidney would require special preparation prior to transplantation.

To make matters even more complex, the renal cyst found on the kidney had a chance of becoming cancerous.

“In this case, our donor’s kidney was the best possible option for his daughter’s life-saving transplant,” consultant transplant surgeon Tim Brown explained, “so we had to ensure precise and complete excision of the cyst to retrieve maximum healthy tissue for transplantation.”

Given the complexity of transplant preparation, the surgeons used a 3D printed replica model of the father’s donor kidney from Belfast-based 3D printing company axial3D.

Detailed axial3D kidney mode, with cyst in black. Image via axial3D.
Detailed axial3D kidney mode, with cyst in black. Image via axial3D.

3D printing a kidney replica

axial3D used imaging from CT scans to construct an exact 1:1 model of William Fenton’s kidney. The model was then 3D printed in the axial3D laboratory using binder jetting technology.

The surgeons at Belfast City Hospital planned and rehearsed the surgery on the model, which featured the precise size and position of the cyst, taking all complications into account.

“This level of insight is just not achievable with standard preoperative imaging,”

Brown explained. “As surgeons, we are highly trained and skilled at what do, but by having a 3D print of the patient’s anatomy in my hand, I get an extra level of understanding that just isn’t possible with 2D or 3D images on-screen.”

Consultant surgeon Mr Tim Brown, who led the procedure. Photo via Axial3D.
Consultant surgeon Mr. Tim Brown, who led the procedure. Photo via Axial3D.

The implications of 3D printed modeling in surgery

With the success of this surgery and a benefit for both the organ donor and the recipient, it is estimated that this procedure was 83% cheaper than keeping Pauline on permanent dialysis.

axial3D itself received over $600,000 of seed funding in 2017, much of it from venture capital fund techstartNI. axial3D has since increased its product portfolio and made its models available on Britain’s National Health Service (NHS).

“We believe in today’s economy, where cost saving and efficiency is at the forefront of the NHS agenda, 3D printing offers an exciting opportunity for hospitals to reduce costs, elevate care, and most importantly, improve patient outcomes,” said axial3D founder Daniel Crawford.

Elsewhere on the NHS, 3D printing has been used in innovative jaw reconstruction surgery at Swansea’s Morriston Hospital. There, 3D printed custom implants and cutting guides have reduced operation times by two hours.

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Featured image shows Belfast City Hospital tower. Photo via APS. 

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