New Materials for an Implantable Blood Pump. Rotary blood pumps are at the leading edge of heart assist technology. VentrAssist has developed an innovative rotary blood pump with a hydro-dynamically suspended impeller. Advanced surface modifications will enable the device to be fabricated from polymers; this will make the device light, more compatible with the human body and less costly to produce. Surface treatments and coatings will be applied using ion implantation, to impart the required ....New Materials for an Implantable Blood Pump. Rotary blood pumps are at the leading edge of heart assist technology. VentrAssist has developed an innovative rotary blood pump with a hydro-dynamically suspended impeller. Advanced surface modifications will enable the device to be fabricated from polymers; this will make the device light, more compatible with the human body and less costly to produce. Surface treatments and coatings will be applied using ion implantation, to impart the required dimensional stability, impermeability and wear resistance. Following sophisticated experiments of modified materials, the best candidates will be used in prototype devices, for final selection of the optimal materials for the new device.Read moreRead less
Understanding glycopolymer interactions with the extracellular matrix. This project aims to advance knowledge of the biochemical and biophysical structure of the endothelial glycocalyx, a dynamic cell surface extracellular matrix rich in proteoglycans and glycosaminoglycans. It will be the first to explore how charged glycopolymers interact with this dynamic interface with the goal to develop a model of the glycocalyx lifecycle. This project is expected to enable the transfer of skills, knowledg ....Understanding glycopolymer interactions with the extracellular matrix. This project aims to advance knowledge of the biochemical and biophysical structure of the endothelial glycocalyx, a dynamic cell surface extracellular matrix rich in proteoglycans and glycosaminoglycans. It will be the first to explore how charged glycopolymers interact with this dynamic interface with the goal to develop a model of the glycocalyx lifecycle. This project is expected to enable the transfer of skills, knowledge and ideas as well as advanced research and industrial training for young scientists. Knowledge derived from this project is expected to enable future innovation in molecules with tailored interactions with the glycocalyx with significant benefits for researchers, manufacturers and end users. Read moreRead less
Hermetic bonding of biomedical polymers for cardiac-assist devices. The use of a polymeric ventricular assist device will bring a much better quality of life to patients with end-stage heart failure. The project will address the remaining challenge, the creation of a hermetic polymer seal, enabling the development of a small, light and highly efficient heart pump. The project has the potential to improve the lives of many Australians as our demographic profile shifts towards older people. Patie ....Hermetic bonding of biomedical polymers for cardiac-assist devices. The use of a polymeric ventricular assist device will bring a much better quality of life to patients with end-stage heart failure. The project will address the remaining challenge, the creation of a hermetic polymer seal, enabling the development of a small, light and highly efficient heart pump. The project has the potential to improve the lives of many Australians as our demographic profile shifts towards older people. Patients with advanced heart failure will live longer, with a higher quality of life. It will assist heart failure sufferers to remain productive members of our community, because many people who use the device will be fit to return to work.Read moreRead less
Rapid Development of Biocompatible Stent Grafts for Aortic Aneurysms. Weakening of the aorta may cause an aneurysm. The present technique of its treatment involves replacing the weakened portion of the aorta with a synthetic graft. Failure of this treatment often occurs due to non-compatibility of the stent graft with natural aorta. One possible reason for this is a mismatch between elastic natural aorta and the non-elastic artificial graft. The core component of our project is the selection and ....Rapid Development of Biocompatible Stent Grafts for Aortic Aneurysms. Weakening of the aorta may cause an aneurysm. The present technique of its treatment involves replacing the weakened portion of the aorta with a synthetic graft. Failure of this treatment often occurs due to non-compatibility of the stent graft with natural aorta. One possible reason for this is a mismatch between elastic natural aorta and the non-elastic artificial graft. The core component of our project is the selection and development of a suitable biomaterial and optimization of the stent design based on hemodynamics flow analysis and its fabrication with the Fused Deposition Modelling (FDM) process.Read moreRead less
In Vitro Study of Hemodynamic Stresses and Endothelialization of Artificial Coronary Arteries. Restenosis (recurrence of the disease) is a major problem in the case of patients undergoing artificial artery by-pass surgery. Ideally the design for manufacturing the scaffold for cell adhesion of the artery should factor in hemodynamic forces and optimised geometry to withstand the hemodynamic stresses and other forces. This project aims to investigate the material for manufacturing the artificial a ....In Vitro Study of Hemodynamic Stresses and Endothelialization of Artificial Coronary Arteries. Restenosis (recurrence of the disease) is a major problem in the case of patients undergoing artificial artery by-pass surgery. Ideally the design for manufacturing the scaffold for cell adhesion of the artery should factor in hemodynamic forces and optimised geometry to withstand the hemodynamic stresses and other forces. This project aims to investigate the material for manufacturing the artificial artery using Fused Deposition Modeling and to develop methods for the establishment of endothelium on the artificial artery, concluding a restenosis-free solution for by-pass surgery. The knowledge gained through this work would be applicable to the design of other prosthetic devices.Read moreRead less
Blood component interactions with polysaccharide biomaterials for vascular applications. Heart disease is the major killer of people in Australia and the Western world. It is due mainly to the blockage of vessels supplying the muscle of the heart with blood and nutrients, which can be replaced or by-passed but the supply of native vessels in the body is limited. Tissue engineering laboratories have been trying to develop blood vessels for this use for many years without significant success. T ....Blood component interactions with polysaccharide biomaterials for vascular applications. Heart disease is the major killer of people in Australia and the Western world. It is due mainly to the blockage of vessels supplying the muscle of the heart with blood and nutrients, which can be replaced or by-passed but the supply of native vessels in the body is limited. Tissue engineering laboratories have been trying to develop blood vessels for this use for many years without significant success. This application plans to understand the molecular signals contained within the sugar sequences used in a commonly used biomaterial chitosan that may be used in the construction of synthetic vascular grafts. If we can understand how blood cells interact with this biomaterial, we may be able to develop a blood vessel in the laboratory.Read moreRead less