Artificial heart for humanoid robot

Potnuru, Akshay; Wu, Lianjun; Tadesse, Yonas

doi:10.1117/12.2045289

Cited by 5 publications

(4 citation statements)

References 24 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Non-toxic is an important factor for materials used in surgical implants and medical devices [13]. Akshay et al [14] fabricated an artificial heart from Platinum cured silicone rubber (ECOFLEX 0010). In this, a biocompatible coating was applied to the blood-contacting surfaces to limit the incidence of thrombus formation in the left ventricular assist devices [15].…”

Section: Pulsatile and Rotary Blood Pumps Biomaterialsmentioning

confidence: 99%

Biocompatible materials of pulsatile and rotary blood pumps: A brief review

Ahmed

Wang

Yang

2020

Reviews on Advanced Materials Science

View full text Add to dashboard Cite

The biomedical materials that have been used in the structure of heart pumps are classified as biocompatible, and these can be metals, polymers, ceramics, and composites. Their positions in the pump vary according to the part’s function. Whereas various materials have different properties, all biomaterials chosen for cardiovascular applications should have excellent blood biocompatibility to reduce the likelihood of hemolysis and thrombosis. There are two major categories of the heart pumps; pulsatile and rotary blood pumps (axial and centrifugal) and the features of some of these materials allow them to be used in both. Rotary and pulsatile blood pump devices have to be fabricated from materials that do not result in adverse biological responses. The purpose of this review is to study the available biocompatible materials for the pulsatile and rotary blood pumps as clinically-approved materials and prototype heart pump materials. The current state of bio-compatible materials of rotary and pulsatile blood pump construction is presented. Some recent applications of surface amendment technology on the materials for heart assist devices were also reviewed for better understanding. The limitations of heart assist devices, and the future direction of artificial heart elements have been considered. This review will be considered as a comprehensive reference to rapidly understanding the necessary research in the field of biocompatible materials of pulsatile and blood rotary pumps.

show abstract

Section: Pulsatile and Rotary Blood Pumps Biomaterialsmentioning

confidence: 99%

Biocompatible materials of pulsatile and rotary blood pumps: A brief review

Ahmed

Wang

Yang

2020

Reviews on Advanced Materials Science

View full text Add to dashboard Cite

show abstract

“…The robotic heart can be used in humanoid robotics to show a change in facial coloration for expression. As discussed in the previous paper [1], the design approach is based on soft materials, passive and active materials (actuators), but the arrangement of actuators significantly affects the performance of the robotic heart. We will briefly discuss the design of the artificial heart, the characteristics of coiled shape memory alloys and humanoid robots with facial expressions (HRwFE) in section 1.…”

Section: Introductionmentioning

confidence: 99%

“…

…”

mentioning

confidence: 99%

Artificial heart for humanoid robot using coiled SMA actuators

Potnuru

Tadesse

2015

SPIE Proceedings

Self Cite

View full text Add to dashboard Cite

Previously, we have presented the design and characterization of artificial heart using cylindrical shape memory alloy (SMA) actuators for humanoids [1]. The robotic heart was primarily designed to pump a blood-like fluid to parts of the robot such as the face to simulate blushing or anger by the use of elastomeric substrates for the transport of fluids. It can also be used for other applications. In this paper, we present an improved design by using high strain coiled SMAs and a novel pumping mechanism that uses sequential actuation to create peristalsis-like motions, and hence pump the fluid. Various placements of actuators were investigated with respect to the silicone elastomeric body. This new approach provides a better performance in terms of the volume of fluid pumped out.

show abstract

“…SMAs are being used in neurology, cardiology and interventional radiology in different ways [18]. SMA-actuated surgical needles and catheters, artificial heart, artificial head and drug-delivery valves are some of the most prominent SMA applications in area of biomedical [19][20][21][22]. However, low working frequency resulted from large cooling time is reported to be the serious issue [19,22,23].…”

Section: Sma Design Challengesmentioning

confidence: 99%

Development of Faster SMA Actuators

Nizamani¹,

Daudpoto²,

AliNizamani³

2017

Shape Memory Alloys - Fundamentals and Applications

View full text Add to dashboard Cite

Large cycle time, resulted from slow cooling, is the core hindrance to the wide spread applications of shape memory alloys (SMAs) as actuators. This chapter discusses a novel cooling technique to decrease the cycle time of SMAs. Under this technique, the SMA actuator of 0.15 mm diameter was run through a grease-filled Polytetrafluoroethylene (PTFE) tube of 0.5 mm outside diameter. Later, same tests were repeated with oil filled PTFE tube. The test results conducted in ambient air were used as standard for comparison. The actuation current in ambient air was set at 210, 310 and 410 mA. While testing with heat sink, i.e. grease and oil, the SMA was heated with 210, 310, 410, 500, 615 and 720 mA currents for 1 and 2 seconds, whereas the SMA was heated for 1 second only with 810 mA current. It was found that the grease cooling reduced the cooling time up to 30% and oil cooling by 20%, as compared to the ambient air-cooling time. However, the grease-cooled actuators had shown less strain, and their response was non-linear at many instances. Heat loss to the sinks resulted to more power consumption than that in ambient air cooling for equivalent amount of strain.

show abstract

Artificial heart for humanoid robot

Cited by 5 publications

References 24 publications

Biocompatible materials of pulsatile and rotary blood pumps: A brief review

Biocompatible materials of pulsatile and rotary blood pumps: A brief review

Artificial heart for humanoid robot using coiled SMA actuators

Development of Faster SMA Actuators

Contact Info

Product

Resources

About