A NEW GROOVED ASPIRATOR NEEDLE.

A new suturing needle.

Comparative Analysis of Helically Grooved and Circumferentially Grooved Labyrinth Seal

Labyrinth seals are used in turbo-machinery for reducing the leakage of working fluid. The energy lost by the fluid passing through the gap between labyrinth seal and rotor causes the reduction in leakage rate. But the fluid in between the labyrinth seal and rotor induce various forces (radial and tangential forces). These forces can be represented by certain numbers of coefficients, such as st...

Indigenously designed meconium aspirator.

Meconium stained amniotic fluid (MSAF) complicates delivery in approximately 8% to 25% of live births. Approximately 5% of neonates born through MSAF develop meconium aspiration syndrome (MAS), and approximately 50% of these infants require mechanical ventilation. Meconium aspiration before or during birth can obstruct airways, interfere with gas exchange and cause severe respiratory distress [...

New sternal puncture needle.

The needles most commonly used for obtaining bone marrow aspirates from the sternum are the Salah and Klima needles. They were designed in the 1930s, and except for the introduction of different kinds of stops and guards there has been no change in their basic structure and design. These instruments are small, do not fit properly in the operator's hand, and the lack of a T-bar handle often make...

A new suture needle for corneal surgery.

IT occurred to me some time ago that, if one used a straight needle so that in placing sutures there was no bending force applied by the needle-holder, this needle could be greatly reduced in diameter. This smaller cross-section would in turn allow it to penetrate tough tissue such as the cornea much more easily. Further, I felt that with a straight needle one could place sutures much more accu...