FDA Approves “Smart” Contact Lens Medical Device

SENSIMED Triggerfish® provides an automated recording of continuous ocular dimensional changes over 24 hours.

The patient wears the SENSIMED Triggerfish® system up to 24 hours and assumes normal activities including sleep periods.


SENSIMED Triggerfish® Sensor  Smart Contact Lens

The SENSIMED Triggerfish® Sensor is a soft disposable silicone contact lens embedding a micro-sensor that captures spontaneous circumferential changes at the corneoscleral area.

The adhesive SENSIMED Triggerfish® Antenna, which is placed around the eye, receives wirelessly the information from the contact lens.

The data is transmitted through a thin flexible cable from the Antenna to the portable recorder.

The portable recorder, worn by the patient, stores the acquired data during the monitoring session. At the end of the recording period, the data is transferred via Bluetooth from the recorder to the software previously installed on the practitioner’s computer.With its revolutionary technology, the SENSIMED Triggerfish® is a unique system providing further information on the continuous and natural changes of the eye over 24 hours.



Bacteria as Bio-Template for 3D Carbon Nanotube Architectures


It is one of the most important needs to develop renewable, scalable and multifunctional methods for the fabrication of 3D carbon architectures. Even though a lot of methods have been developed to create porous and mechanically stable 3D scaffolds, the fabrication and control over the synthesis of such architectures still remain a challenge. Here, we used Magnetospirillum magneticum (AMB-1) bacteria as a bio-template to fabricate light-weight 3D solid structure of carbon nanotubes (CNTs) with interconnected porosity. The resulting porous scaffold showed good mechanical stability and large surface area because of the excellent pore interconnection and high porosity. Steered molecular dynamics simulations were used to quantify the interactions between nanotubes and AMB-1 via the cell surface protein MSP-1 and flagellin. The 3D CNTs-AMB1 nanocomposite scaffold is further demonstrated as a potential substrate for electrodes in supercapacitor applications.


First Person: Herman O. Sintim

Herman O. Sintim, an organic chemist at Purdue University and a Sigma Xi Distinguished Lecturer, discusses novel ways to target bacteria that cause illnesses.

Antibiotic resistance is on the rise, and we are potentially facing a time when standard antibiotics simply won’t work anymore. Herman O. Sintim, an organic chemist at Purdue University and a Sigma Xi Distinguished Lecturer, is developing novel ways to target bacteria that cause illnesses. His approach is to prevent them from producing the toxins that lead to illness, rather than killing them. That kind of intervention avoids placing selection pressure on the bacteria, and so should reduce the chances that the bacteria will develop resistance to the intervention. Sintim discussed his research with managing editor Fenella Saunders.



3D Printing of Biomaterials Directly Onto Moving Body


At the 2017 IEEE/RSJ International Conference on Intelligent Robots and Systems (IROS) in Vancouver, Canada this week, researchers from the University of Minnesota are presenting a system that 3D prints objects directly onto a moving human body. It’s intended to put down layers of biomaterials that have been developed in the recent years, but which have been limited due to having to be made on a printer and then somehow transferred to the skin. As seen in the video below, the U of Minnesota system continuously tracks the hand while it’s under the printer, and adjusts the position of the nozzle to guarantee the correct position of every drop of bio-ink.