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Related Concept Videos

Machines01:19

Machines

849
Machines are complex structures consisting of movable, pin-connected multi-force members that work together to transmit forces. One example of a machine is the cutting plier, which is used to cut wires by applying forces to its handles. When equal and opposite forces are exerted on the handles of the cutting plier, they cause the cutting edges to come together and apply equal and opposite reaction forces on the wire, which are greater than the applied forces.
A free-body diagram of the...
849
Sequence Networks of Rotating Machines01:24

Sequence Networks of Rotating Machines

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A Y-connected synchronous generator, grounded through a neutral impedance, is designed to produce balanced internal phase voltages with only positive-sequence components. The generator's sequence networks include a source voltage that is exclusively in the positive-sequence network. The sequence components of line-to-ground voltages at the generator terminals illustrate this configuration.
Zero-sequence current induces a voltage drop across the generator's neutral impedance and other...
590
Brick Cutting Techniques01:08

Brick Cutting Techniques

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Brick-cutting techniques involve various tools and methods to shape bricks for construction. A mason's hammer with a chisel-pointed end is used for basic shaping through sharp, precise strikes. For more complex shapes requiring higher precision, a power saw with a water-cooled diamond blade is used.
Cut bricks are categorized by size. Bricks cut to half their original length are called half-bats, while those cut to three-fourths their length are known as three-fourth bats.
Special types of...
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Related Experiment Video

Updated: Apr 24, 2026

Automatic Laser-based Geometry Capture for Finite Element Analysis of Weld Beads
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Automatic Laser-based Geometry Capture for Finite Element Analysis of Weld Beads

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Machines and cutters: Constellation®.

Matthew T Witmer1, Pravin U Dugel

  • 1Retinal Consultants of Arizona, Phoenix, Ariz., USA.

Developments in Ophthalmology
|September 9, 2014
PubMed
Summary
This summary is machine-generated.

The Alcon Constellation system offers advanced vitrectomy surgery technology. It enables controlled vitreous removal and precise intraocular pressure management for safer ophthalmic procedures.

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Area of Science:

  • Ophthalmology
  • Surgical Technology
  • Retinal Surgery

Background:

  • Vitrectomy surgery requires precise control to safely remove vitreous.
  • Maintaining stable intraocular pressure is crucial during vitreous removal.
  • Preventing iatrogenic retinal damage is a key challenge in vitrectomy.

Purpose of the Study:

  • To highlight the technological advancements of the Alcon Constellation system for vitrectomy.
  • To explain how the Constellation system facilitates safe and efficient vitreous removal.
  • To detail the features that enhance intraocular pressure control and surgical precision.

Main Methods:

  • The Alcon Constellation system utilizes high-speed, small-gauge vitrectomy probes.
  • Features include surgeon-controlled duty cycle and integrated laser capabilities.
  • The system offers precise intraocular pressure management and gas mixing.

Main Results:

  • The Constellation system allows for controlled vitreous removal.
  • It facilitates maintenance of safe intraocular pressure levels.
  • The technology aids in minimizing iatrogenic retinal complications.

Conclusions:

  • The Alcon Constellation system represents state-of-the-art technology for vitrectomy.
  • Its features enable surgeons to achieve safe and efficient vitreous removal consistently.
  • The system improves the ability to manage intraocular pressure and prevent retinal damage.