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Flat belts are crucial in many industrial applications as they help transmit power from one pulley to another. The concept of forces and moments is used to determine the maximum moment on a pulley. For instance, consider a flat belt that wraps around two pulleys, A and B, with radii of 30 cm and 10 cm, respectively. The angle between the belt and the horizontal is 20 degrees at the pulleys. As pulley B rotates clockwise and drives pulley A, tension T2 is caused at one end of the belt, while...
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Bending of Material: Problem Solving01:09

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In this lesson, determine the ratio of the maximum bending moments applied to two metal pipes, given that both pipes can withstand a maximum stress of 100 MPa. Both pipes have an outer radius of 1.8 cm. Pipe A has an inner radius of 1.5 cm, and Pipe B has an inner radius of 1 cm. The ratio of the maximum bending moment applied to two metallic pipes, each with a different inner and outer radius, is determined by considering their dimensions. The inner radius of the first pipe is 1.5 cm, and for...
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Designing a solid shaft that transmits power from a motor to a machine tool involves a series of calculations to ensure the shaft can withstand the stresses applied by bending moments and torques. First, calculate the torque exerted on the gear, considering the power transmitted by the shaft and its rotational speed. Following this, compute the tangential forces acting on the gears, which directly relate to the torque and the gear radius.
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Mini Bentall operation: technical considerations.

Marco Di Eusanio1, Mariano Cefarelli1, Carlo Zingaro1

  • 1Cardiac Surgery Unit, Cardiovascular Department, Ospedali Riuniti, Politechnic University of Marche, Via Conca 71, 60126 Ancona, Italy.

Indian Journal of Thoracic and Cardiovascular Surgery
|October 16, 2020
PubMed
Summary
This summary is machine-generated.

Minimally invasive Bentall operation using a ministernotomy approach offers a safe and effective alternative to traditional median sternotomy for aortic valve and root disease. This technique provides excellent outcomes for complex cardiac procedures.

Keywords:
Aortic root surgeryBentall operationMinimally invasive techniques

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Area of Science:

  • Cardiac Surgery
  • Minimally Invasive Cardiac Surgery
  • Aortic Valve and Root Surgery

Background:

  • The Bentall operation via median sternotomy is the established standard for aortic valve and root disease.
  • Minimally invasive cardiac surgery techniques, including ministernotomy, have demonstrated excellent outcomes.
  • Minimally invasive approaches are increasingly applied to complex procedures like aortic root and arch surgery.

Purpose of the Study:

  • To present a specific technique for performing the minimally invasive Bentall operation.
  • To highlight the application of the ministernotomy approach for complex aortic procedures.

Main Methods:

  • Description of the authors' technique for minimally invasive Bentall operation.
  • Utilizing a ministernotomy approach for aortic valve and root replacement.

Main Results:

  • The study presents a technique for minimally invasive Bentall operation.
  • This approach is proposed for complex cardiac procedures.

Conclusions:

  • Minimally invasive Bentall operation via ministernotomy is a viable approach.
  • This technique can be applied to complex aortic valve and root surgeries.