Category: Bio-Medical

Hexapod Robots in Laser Microsurgery Research

Laser micro-surgery can benefit from tracking and image-based methods that improve precision and safety. Advanced software together with stereo camera feedback allow for motion estimation reduce tracking errors.  A highly precise parallel kinematics motion system (Model H-824 from Physik Instrumente) with 6 degrees of freedom was used to evaluate the performance. More information is available […]

XYZ Positioning Mechanism Integrated in Automated Medical Instrument Developed in Partnership with ITL

Standard or Custom Engineered Solutions when Time is Critical? The old question – standard or custom – was one of the key considerations when ITL Group decided on what precision multi-axis motion system to use in one of their latest projects. In this particular case, ITL was approached by a client with an open frame […]

Nano-3D Manufacturing Technology with Piezo Mechanisms and Laser Lithography

3D printing and additive manufacturing are gaining traction in prototyping and industrial manufacturing of complex parts. Typical 3D printers can produce feature sizes down to a few 10 microns. Significantly higher resolution is available with a new laser lithography system. Here the production of complex three-dimensional micro- and nanostructures is based on photosensitive materials. In […]

Dental Biomechanics Research Based on Hexapod 6-Axis Platform

Hexapod motion and positioning platforms have traditionally been used in engineering, optics, and physics applications for their ability to provide precision motion in all degrees of freedom and flexibility based on a programmable center of rotation. As hexapods become more mainstream, applications expand into medical fields as well. Dental biomechanics deals with the interactions between […]

Piezo Transducers, Actuators, and Motor Drive Solutions for Medical Engineering

Medical engineering and life-science disciplines have multi-faceted requirements for motion and positioning equipment: the spectrum spans from ultrasonic transducers to simple low-energy drive components to high-precision positioning systems and ultra-fast actuators for valve and pumping applications. Piezoceramic transducers and motor drives meet these needs and have a long track record of reliability and ruggedness in […]

Imaging: Miniature Drives for Focus and Zoom Control for Endoscopy

Minimal invasive surgery (MIS) is aiming at causing patients as little discomfort as possible and endoscopes play an important role here. Traditional Chip-on-the-Tip endoscopes use fixed focus optics, which cannot display objects at different distances with optimum resolution. By integrating a miniature drive, it could become possible to achieve variable focusing, so that the object […]

Automation and Microscopy: Faster Test & Measurement, Surface Metrology – Piezo Speed is Enabler for 100% Testing

Everybody who commutes by car is familiar with the concept: constant velocity gets you faster to your destination than stop-and-go traffic. This well-known principle from the macro-world is now employed in the nano-world by scientists from the Fraunhofer Institute for Production Technology IPT in Aachen, Germany. Their solution speeds up microscopic testing of large-surface objects, […]

Ultrasonic Piezo Transducers: From Welding to Medical Applications

Standard PZT and Lead-Free Piezo Ceramics Ultrasound has been used in nature for navigation above and under water. Bats and dolphins are but two species who perfected the transmission, reception, and processing over millions of years. Frequencies above 20 kHz – above the hearing range of the human ear – are labelled as ultrasound. What […]

Advances in Piezo Mechanics Aid Eye Surgery

Piezo motion-based mechanisms provide a variety of features that are highly sought after in life-science and medical engineering applications, such sterile ceramic designs and lubricant-free drives. Ceramics are also non-magnetic, an advantage in high-energy imaging/scanning based on strong magnetic fields. Piezo mechanisms can also provide very precise motion with incredible speed. Successful correction of vision […]

Quantitative Measurement of Protein Dynamics with High Linearity Atomic Force Spectrometer

The single molecule force spectrometer described in this paper uses of fast and highly linear piezo stage. This multi-axis stage (model P-313 PicoCube) can run in open loop and provide closed-loop linearity, but at higher dynamics. The linearity, bandwidth and comparative absence of hysteretic behavior for this multi-axis assembly ensure previously unattained resolution. Combined with […]

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About PI

PI (Physik Instrumente) is a leading manufacturer of precision motion control equipment, piezo motors, air bearing stages and hexapod parallel-kinematics for semiconductor applications, photonics, bio-nano-technology and medical engineering. PI has been developing and manufacturing standard & custom precision products with piezoceramic and electromagnetic drives for 4 decades. The company has been ISO 9001 certified since 1994 and provides innovative, high-quality solutions for OEM and research. PI is present worldwide with fifteen subsidiaries, R&D / engineering on 3 continents and total staff of more than 1,000.

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