3D Printing in Biomedical Device Development

Engineers can print a child’s airway splint inside a jar of gel. No supports. No extra plastic to prop it up. They drew it in open space and the gel held the shape until it set. For years, 3D printing has had one constant problem: gravity. Print an overhang and it sags. Print a bridge and it droops. So we add supports, then snap them off and throw them away. Printing inside a yield-stress gel flips that. What standard printing forces you to do: ↳ Build layer by layer on a flat bed ↳ Spend 30–50% extra material on supports ↳ Avoid complex internal channels ↳ Watch soft materials slump under their own weight What gel printing allows: ↳ Print upward, sideways, even in midair ↳ Skip supports entirely ↳ Make branches, knots, and enclosed paths ↳ Keep delicate bioinks suspended until they solidify The best example is the one that matters most. A child who needs a custom airway splint doesn’t have to accept a simplified design “because the printer can’t do it.” Surgeons can match the patient’s CT scan—curves, branches, everything. The gel holds each turn while the material sets, then rinses away with water. The same method is making soft robotic tentacles with internal fluid channels, bio-inspired grippers, and vessel-like networks for lab-grown tissue. Where it goes first: ↳ Patient-specific implants that fit the body exactly ↳ Soft robots with shapes you couldn’t print before ↳ Aerospace parts once the materials clear certification Medicine leads because each part can be worth $10,000+. And the real change isn’t a new printer. It’s a new rule set. We’ve been designing for “down.” Now we can design for the shape we actually need. __________ Inspired by: Brunel et al. (2024), Advanced Healthcare Materials, on embedded 3D bioprinting of collagen in microgel baths — and related work in support‑bath printing, soft robotics, and patient‑specific implants.

Researchers have successfully 3D printed a cornea to restore sight. Scientists at Pohang University of Science and Technology and Kyungpook National University have achieved a major milestone in regenerative medicine by 3D printing an artificial cornea. Using a specialized "bioink" derived from decellularized corneal stroma and stem cells, the team successfully replicated the complex collagen lattice essential for human vision. Unlike previous attempts with synthetic materials, this bioprinted tissue maintains the exact transparency and flexibility required for the eye to function naturally, offering a potential solution for the global shortage of donor corneas. The success of this innovation lies in the team's ability to regulate "shear stress" during the printing process. This technique allows for the precise alignment of collagen fibrils, mimicking the native architectural pattern of a human cornea—a feat previously thought impossible. By creating a biocompatible environment that supports cellular growth and optical clarity, this research marks a significant leap forward in bioengineering. This development could eventually reduce the risk of transplant rejection and provide millions of patients with a life-changing alternative to traditional grafts. source: Kim, J. H., Kim, K. W., Yun, J. W., & Cho, D. W. Shear-induced alignment of collagen fibrils using 3D cell printing for corneal stroma tissue engineering. Biofabrication.

🫀 A Heart Printed From Life — The Future of Medicine Is Already Here In a breakthrough that pushes regenerative medicine into a new era, scientists have successfully 3D-printed a human heart made entirely from a patient’s own living cells — a feat once considered pure science fiction. Using cutting-edge bioprinting technology, researchers begin by converting a small tissue sample into personalized bio-ink, rich with cells capable of forming cardiac muscle, blood vessels, and structural proteins. Layer by layer, the printer constructs a fully shaped heart — complete with chambers, valves, and intricate vascular networks engineered to function like the real organ. Unlike mechanical implants or donor organs, this bioprinted heart carries the patient’s exact cellular identity, dramatically reducing the risk of rejection. Scientists explain that the printing process mimics natural embryonic development, guiding cells to self-organize into beating tissue as electrical impulses begin to pulse through the structure. Early prototypes have already shown rhythmic contractions in the lab, proving that these aren’t just anatomical models — they’re alive. The implications for global healthcare are immense. With donor shortages affecting millions, a future where patients receive personalized organs printed on demand could redefine transplant surgery. Conditions once deemed fatal may one day be treated with organs grown from the patient’s own cells — improving survival rates and eliminating lifelong immunosuppressant therapy. Though clinical implantation in humans is still under development, experts agree: This achievement marks one of the most profound steps toward custom-made, living human organs — printed with precision, powered by biology, and built from the patient themselves. #Medical #Biotech #Regeneration #fblifestyle #Technologia --- 📚 Reference Section (Selected Scientific Sources) 1. Tal Dvir et al. (2019) – “3D Printing of Personalized Thick and Fully Vascularized Heart Tissues.” Advanced Science. 2. Murphy, S. V. & Atala, A. (2014) – “3D bioprinting of tissues and organs.” Nature Biotechnology. 3. Lee, A. et al. (2019) – “Three-dimensional bioprinting of functional human tissues.” Nature Protocols. 4. Noor, N. et al. (2019) – “3D Printed Cardiac Patches and Hearts from Patient Cells.” Advanced Science. 5. Vega, S., Kwon, M. et al. (2023) – “Engineering functional cardiac tissues through bioprinting.” Biomaterials. #ashishdrishti👀📚🧬 #everyone

Researchers developed a hybrid bioprinting platform—the Hybprinter—that combines molten material extrusion for rigid polymers like PCL with DLP bioprinting for soft, cell-laden hydrogels. This approach enables continuous fabrication of multi-material constructs that are both mechanically strong and biologically active. For example, rigid bone-like scaffolds infused with soft, cell-supportive hydrogels. Compared to hydrogel-only prints, the hybrid structures achieved a 1000× increase in mechanical strength and could even be sutured, bridging the gap between lab-printed tissues and surgical handling. The researchers used GelMA for their DLP-printed hydrogel components, but other photocrosslinkable materials such as CollPlant’s methacrylated recombinant type I human collagen could be explored for similar applications. Read the full publication: https://lnkd.in/ggPsJG2v #3dbioprinting #tissueengineering #cellculture

3D-Printed Skull Implants Are Redefining What “Life-Saving Surgery” Means Overview This Men’s Health feature profiles Greg Morrison, a 63-year-old systems engineer whose life was saved after nearly half of his skull was replaced with a custom 3D-printed implant. Following multiple brain bleeds and surgeries, traditional reconstruction methods failed, forcing doctors to turn to advanced additive manufacturing to protect his brain and restore normal function. The Medical Challenge Morrison suffered a brain bleed linked to blood-thinning medication, requiring emergency surgery to remove part of his skull and relieve pressure. Subsequent complications, including an unrelated brain tumor and repeated surgeries, prevented the skull bones from healing or fusing. The damaged skull began collapsing inward, screws loosened, and Morrison faced severe risk from infection or even minor head trauma. Conventional mesh implants could not restore the skull’s complex shape. The Breakthrough Solution Neurosurgeon Dr. Nitesh Patel proposed a patient-specific, 3D-printed skull implant based on detailed CT scans. A specialized company created a precise digital model and fabricated the implant from a medical-grade polymer engineered to mimic the strength and properties of natural bone. The implant was surgically fixed in place, fitting seamlessly with Morrison’s existing skull structure. Outcome and Impact Morrison recovered without complications and quickly returned to an active, productive life. The implant is undetectable externally, restores full protection to the brain, and requires no ongoing maintenance. According to Dr. Patel, similar implants are already being used for patients with tumors, traumatic injuries, and infections that compromise skull integrity. Why This Matters This case illustrates how 3D printing is moving from experimental novelty to frontline clinical tool. Custom implants enable precision reconstruction that traditional approaches cannot achieve, reducing risk, improving outcomes, and accelerating recovery. As the technology expands into joints, heart valves, and inner-ear structures, personalized, digitally designed anatomy is becoming a core pillar of next-generation medicine. Keith King https://lnkd.in/gHPvUttw

A Band-Aid for the heart? A new way to 3D print material elastic enough to withstand a heart’s persistent beating, tough enough to endure the crushing load placed on joints, and easily shapable to fit a patient’s unique defects. University of Colorado Boulder and University of Pennsylvania. Brief video. August 01, 2024 Excerpt: The breakthrough, described in Aug. 2 edition of the journal Science, helps pave the way toward a new generation of biomaterials, from internal bandages that deliver drugs directly to the heart to cartilage patches and needle-free sutures. “Cardiac and cartilage tissues are similar in that they have very limited capacity to repair themselves. When they’re damaged, there is no turning back,” said senior author Jason Burdick, a professor of chemical and biological engineering at CU Boulder’s BioFrontiers Institute. “By developing new, more resilient materials to enhance the repair process, we can have a big impact on patients.” Historically, biomedical devices have been created via molding or casting, techniques which work well for mass production of identical implants but not practical when it comes to personalizing implants for specific patients. In recent years, 3D printing has opened a world of new possibilities for medical applications by allowing researchers to make materials in many shapes and structures. Unlike typical printers, 3D printers deposit layer after layer of plastics, metals or living cells to create multidimensional objects. One specific material, hydrogel (utilized in contact lenses), a favorite prospect for fabricating artificial tissues, organs and implants. Until now 3D-printed hydrogels tend to break when stretched, crack under pressure or are too stiff to mold around tissues. To achieve strength and elasticity within 3D printed hydrogels, Burdick and colleagues observed worms, which repeatedly tangle and untangle themselves around one another in three-dimensional “worm blobs” that have solid and liquid-like properties. Previous research has shown incorporating similarly intertwined chains of molecules, “entanglements,” can make them tougher. Note: The new printing method, CLEAR (Continuous-curing after Light Exposure Aided by Redox initiation), follows a series of steps to entangle long molecules inside 3D-printed materials much like those intertwined worms. “We can now 3D print adhesive materials strong enough to mechanically support tissue,” said co-first author Matt Davidson, a research associate in the Burdick Lab. “We have never been able to do that before.” Burdick imagines a day when 3D-printed materials could be used to repair defects in hearts, deliver tissue-regenerating drugs directly to organs or cartilage, restrain bulging discs or stitch patients in the operating room without inflicting tissue damage as a needle and suture can. Link to brief video and recently published research enclosed.

🟥 Bioprinting and Scaffold Integration of Organoids for Functional Tissue Engineering Bioprinting and scaffold integration are driving a new frontier in regenerative medicine by transforming organoids into implantable, functional tissues. While stem cell-derived organoids can mimic the structure and function of real organs, their clinical applications are often limited by size, shape, and lack of vascularization. But bioprinting techniques and biocompatible scaffolds now offer solutions to overcome these limitations, enabling the construction of more organized and physiologically relevant tissue structures. 3D bioprinting allows for the precise placement of cells, organoids, extracellular matrix (ECM), and growth factors in a defined spatial arrangement. When combined with bioinks tailored to the properties of the target tissue, researchers can fabricate complex multicellular structures that mimic native tissue architecture. The technology improves structural integrity and supports organoid maturation and integration into functional tissue units. Scaffold integration plays a key role in providing mechanical support and guiding organoid growth and organization. Scaffolds made from natural or synthetic biomaterials such as collagen, alginate, or PLGA can be engineered to promote vascularization, cell adhesion, and nutrient diffusion. These structures enable organoids to grow in a controlled, scalable manner and enhance their potential for transplantation or in vivo regeneration. Applications of the above technologies include printing liver, kidney, and heart tissue, integrating neural organoids with conductive scaffolds to repair the brain, and generating airway structures for lung regeneration. With the continuous advancement of biomaterials science, tissue biomechanics, and vascular engineering, bioprinting and scaffold technology are making organoid-based tissue engineering a powerful platform for disease modeling, drug testing, and personalized regenerative therapies. Reference [1] Michelle Huang et al., Nature Reviews Bioengineering 2025 (https://lnkd.in/eTb23WFw) #Organoids #Bioprinting #TissueEngineering #ScaffoldDesign #RegenerativeMedicine #3DBiology #StemCells #PrecisionMedicine #BiotechInnovation #Vascularization #TransplantTherapies #FunctionalOrganoids #CSTEAMBiotech

What if the biggest limitation in #AFO design was never the clinician’s creativity—but the manufacturing process? or technician labor? #OandP professionals have had a sort of compromise for years: Create more advanced geometries tailored to a patient’s needs? Adjust thickness in specific areas to create a more dynamic device? Add aesthetic AND functional perforations to decrease weight and increase ventilation? Traditional manufacturing often forced the answer to be: not this time. That’s changing fast. Today’s combination of advanced design software and industrial-grade 3D printing is giving clinicians and technicians something they’ve rarely had before: true design freedom. 🔹 On the hardware side: Modern SLS systems like the new Formlabs Fuse X1 can produce full-size adult AFOs in a single build—no sectioning, no scaling down, and most importantly no support structures. Just strong, production-ready devices built to handle real-world use. 🔹 On the software side: Tools like #LeoAFO from LeoShape make it possible to move from scan to finished design in a streamlined digital workflow. Clinicians can clean scan data, optimize posture, customize trim lines, map strut paths, add ventilation patterns, and even vary thickness zones to achieve specific biomechanical outcomes. The result? ✅ More personalization ✅ Greater efficiency in the design-to-manufacture workflow ✅ Lightweight devices that are optimized for performance ✅ Devices designed around the patient needs—not around production limitations This isn’t simply a shift from plaster to digital. It’s a shift from working around limitations to designing with intention. The question is no longer “Can we manufacture this?” It’s “What’s the best solution for this patient?”* And that’s a much more exciting place to be. #Orthotics #AFO #3DPrinting #OandP #Innovation *Sometimes the best solution isn't 3DP 😮

𝐓𝐡𝐞 𝐢𝐝𝐞𝐚 𝐨𝐟 𝟑𝐃 𝐩𝐫𝐢𝐧𝐭𝐢𝐧𝐠 𝐡𝐚𝐬 𝐣𝐮𝐬𝐭 𝐛𝐞𝐞𝐧 𝐟𝐥𝐢𝐩𝐩𝐞𝐝 𝐨𝐧 𝐢𝐭𝐬 𝐡𝐞𝐚𝐝. Instead of printing metal, a team of scientists in Switzerland grew it from a gel – and the result is 20x stronger than previous methods. Using a water-based hydrogel as a scaffold, researchers at EPFL (École Polytechnique Fédérale de Lausanne) created complex structures that can be infused with metal salts. After several rounds of soaking and heating, the gel vanishes – leaving behind dense, ultra-strong metal or ceramic. Traditional metal 3D printing often results in porous structures with serious shrinkage. This new method dramatically reduces those flaws, producing durable, precisely shaped components with only 20% shrinkage. It also opens the door to building with a wide range of materials – the same gel template can be used to grow iron, silver, copper, or even advanced composites. The technique could revolutionize how we make complex, high-performance parts for energy systems, biomedical devices, and next-gen electronics. It’s also a shift in mindset: rather than designing around the limits of printing materials, this approach lets researchers build first, and choose the material later. The team is already working on automating the process, aiming to bring this breakthrough into real-world manufacturing. Read the study "𝐻𝑦𝑑𝑟𝑜𝑔𝑒𝑙‐𝐵𝑎𝑠𝑒𝑑 𝑉𝑎𝑡 𝑃ℎ𝑜𝑡𝑜𝑝𝑜𝑙𝑦𝑚𝑒𝑟𝑖𝑧𝑎𝑡𝑖𝑜𝑛 𝑜𝑓 𝐶𝑒𝑟𝑎𝑚𝑖𝑐𝑠 𝑎𝑛𝑑 𝑀𝑒𝑡𝑎𝑙𝑠 𝑤𝑖𝑡ℎ 𝐿𝑜𝑤 𝑆ℎ𝑟𝑖𝑛𝑘𝑎𝑔𝑒𝑠 𝑣𝑖𝑎 𝑅𝑒𝑝𝑒𝑎𝑡𝑒𝑑 𝐼𝑛𝑓𝑢𝑠𝑖𝑜𝑛 𝑃𝑟𝑒𝑐𝑖𝑝𝑖𝑡𝑎𝑡𝑖𝑜𝑛." 𝐴𝑑𝑣𝑎𝑛𝑐𝑒𝑑 𝑀𝑎𝑡𝑒𝑟𝑖𝑎𝑙𝑠, 2025 https://lnkd.in/eian6kVx

🔬 A New Era in Medicine: First-Ever 3D-Printed Windpipe Implanted in Cancer Survivor In a groundbreaking medical achievement, South Korean scientists have successfully implanted a 3D-printed trachea (windpipe) into a patient — marking a world-first and redefining the future of regenerative medicine. The patient, a woman who had lost a part of her windpipe due to thyroid cancer surgery, became the recipient of this bioengineered miracle. The artificial trachea was developed using bio-ink composed of the patient's own living cells — including cartilage and mucosal cells — combined with a biodegradable polymer scaffold (PCL). This scaffold not only provided mechanical strength but also allowed the body to regenerate its own tissue around it. What makes this even more astonishing? ✅ No immunosuppressants were needed. Since the trachea was built from the patient’s own cells, her body accepted it naturally. ✅ Healthy blood vessels formed within 6 months, a critical sign of integration and healing. ✅ The patient regained normal function without the usual complications of transplant rejection. Led by Seoul St. Mary’s Hospital and T&R Biofab, this achievement is being hailed as a major milestone in personalized medicine and bioprinting technology. The future is no longer dependent solely on donors — it's now being printed, cell by cell. This opens the door for the possibility of 3D-printed lungs, kidneys, even hearts — tailored for the individual, reducing waitlists, and eliminating the risk of rejection. We are witnessing the dawn of a medical revolution where organs won’t just be donated… they’ll be designed. #RegenerativeMedicine #3DPrinting #HealthcareInnovation #Biotech #FutureOfMedicine #MedicalBreakthrough #OrganTransplant 🪻Ram Sharma 🪻