Medical Models Fully Replicate the Feel, Responsiveness, and Biomechanics of Human Anatomy

Typically, when medical device companies or physicians want to study a specific condition or disease state, they experiment on either cadavers or animals. But finding a cadaver that fits the criteria of one of these pathologies, such as scoliosis or congenital heart disease, can be difficult. And if such cadavers can be found, the cost to procure, maintain, and dispose of them is significant. Animal studies have the same cost-effectiveness issues. And, while animal anatomy can be similar to human anatomy, it is not exactly the same. “But now [customers] can have organ models printed in 3D, on demand,” said Scott Drikakis, business segment leader, medical, at Stratasys, said in an interview with MD+DI. Based on the need for biomechanical accuracy and in response to feedback from its current customers, Stratasys partnered both with medical device companies and hospitals to develop its J750 Digital Anatomy printer. Not only can it print exact replicas of human organs, it also realistically recreates any type of pathologies in them. The J750 has 384 nozzles on every print head, and it ejects polymers out of each nozzle. On each side of the print head are UV lights, so that as the material is ejected, it is UV cured. From a 16-micron level, each layer is built upon, with the X axis and the Y axis going forward and back, and then the Z axis is what builds the materials for the model up. “We launched three new materials, which ar...
Source: MDDI - Category: Medical Devices Authors: Tags: 3-D Printing Source Type: news

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AbstractScoliosis is common in children with congenital heart disease (CHD) and may have deleterious effects on quality of life and hemodynamics. Relatively little is known about the outcomes of spinal fusion for scoliosis repair in children with complex CHD. We reviewed all cases of children with CHD undergoing first time spinal fusion excluding those with minor CHD between 1995 and 2015. Seventy-eight patients were identified and included in the study. 97.4% of patients included had undergone prior cardiac surgery and sixteen patients had single ventricle circulations. 17.9% of patients experienced a significant perioper...
Source: Mammalian Genome - Category: Genetics & Stem Cells Source Type: research
Conclusion: Scoliosis surgery in patients with complex cardiac disease may be indicated to treat progressive deformities which produce severe symptoms. A multidisciplinary approach including a spinal surgeon, as well as a cardiologist, haematologist, respiratory paediatrician and spinal anaesthetist can evaluate the general medical condition and weigh the benefits and risks of surgery. Deformity correction can be performed using a meticulous technique and has produced a series of satisfactory outcomes.
Source: Medical Principles and Practice - Category: Internal Medicine Source Type: research
Conclusion: The anatomic complexity and risk of devastating neurologic consequences in spine surgery call for careful preparations. 3-D models enable more efficient and precise surgical planning compared to the use of 2-dimensional CT/magnetic resonance images. The 3-D models also make it easier to visualize patient anatomy, allowing patients and their families who lack medical training to interpret and understand cross-sectional anatomy, which in our experience, enhanced the consultations. PMID: 30983902 [PubMed]
Source: Ochsner Journal - Category: General Medicine Tags: Ochsner J Source Type: research
Publication date: January 2019Source: Spine Deformity, Volume 7, Issue 1Author(s): Allison B. Spitzer, K. Aaron Shaw, Michael Schmitz, Dennis P. Devito, Joshua S. MurphyAbstractBackgroundChildren with congenital heart disease (CHD) have been reported to be at increased risk of developing scoliosis following cardiac surgery. Previous sample studies have reported that these patients may safely undergo posterior spinal fusion (PSF) with low complication rates. The goal of this study is to provide an updated analysis of the perioperative complication profile for posterior spinal fusion in a large cohort of pediatric patients w...
Source: Spine Deformity - Category: Orthopaedics Source Type: research
Publication date: Available online 23 August 2012Source: Spine DeformityAuthor(s): John R. Dimar, Leah Y. CarreonAbstractDown syndrome is a common genetic disorder that has a significant incidence of spinal pathology. The most common spinal disorder is ligamentous laxity of the cervical spine that involves either the occiput-C1 level, which causes atlanto-occipital instability (AOI), or the C1-C2 level, which causes atlanto-axial (AAI) instability. These areas of cervical instability warrant close monitoring for progressive instability or neurological changes that may require restriction from sports or, in certain cases, s...
Source: Spine Deformity - Category: Orthopaedics Source Type: research
ConclusionHeart disease comorbidity is an independent risk factor for both medical and major medical complications. Smoking, fusion level, and LOS are independent risk factors for medical complication. Diabetes is the independent risk factors for major medical complications.
Source: International Orthopaedics - Category: Orthopaedics Source Type: research
Several previous reports have elucidated the mortality and incidence of complications after pediatric scoliosis surgery using nationwide databases. However, all of these studies were conducted in North America. Hence, this study aimed to identify the incidence and risk factors for in-hospital mortality and morbidity in pediatric scoliosis surgery, utilizing the Diagnosis Procedure Combination database, a national inpatient database in Japan. We retrospectively extracted data for patients aged less than 19 years who were admitted between 01 June 2010 and 31 March 2013 and underwent scoliosis surgery with fusion. The primar...
Source: Medicine - Category: Internal Medicine Tags: Research Article: Observational Study Source Type: research
We describe the case of an adolescent with a history of repaired truncus arteriosus undergoing posterior spinal fusion who developed sudden and profound hypotension that was ultimately confirmed to be an anaphylactic reaction to Surgiflo. Echocardiography was used to aid in diagnosis and management of the cardiovascular effects of anaphylaxis in this patient with residual cardiac pathophysiology.
Source: A&A Case Reports - Category: Anesthesiology Tags: Case Report Source Type: research
Discussion Neural tube defects are a group of disorders that arise during embryogenesis. They include anenephaly, exencephaly, meningmyelocoeles and encephalocoeles and other malformations including occult spinal dysraphism. Occult spinal dysraphism (OSD) has incomplete fusion of the midline elements of the spine including the bony, neural, and mesenchymal tissues but the abnormalities are covered by skin (ectodermal tissues) and therefore are not obvious. OSD has a higher risk of tethered spinal cord syndrome or other neurological/neurosurgical problems. Normally the caudal end of the spinal cord, the conus medullaris, ha...
Source: PediatricEducation.org - Category: Pediatrics Authors: Tags: Uncategorized Source Type: news
We present 3 patients with CHD who underwent scoliosis correction and review the literature on this rare condition.
Source: The Spine Journal - Category: Orthopaedics Authors: Source Type: research
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