A common breast reconstruction technique is tissue expansion, which involves expansion of the breast skin and muscle using a temporary tissue expander
. After a few months, the expander
is removed and the patient receives either microvascular flap reconstruction, or the insertion of a permanent breast implant.
The company's AeroForm Tissue Expander
System is used in patients undergoing two- stage breast reconstruction following mastectomy.
The new beam expander
is interchangeable with Qioptiq's previous model (2x-8x).
Using the PI7C1401, four low-speed ports can be aggregated into a single channel and, by combining multiple quad port expanders
, a host processor can control up to 56 transceivers through a single I2C/SPI interface.
In one of these two sites, the expander
was expelled due to crack formation of the silicon shell as a result of handling the body of the expander
with the dental tweezer (Figures 8(a)-8(c), "Case 2").
"Our new flash memory expander
is the latest example of IDT growing our portfolio of memory interface solutions to help engineers meet the requirements of today's memory-intensive applications."
The use of onboard gas as the expansion medium eliminates the need for saline bolus injections that are required for conventional tissue expanders
. The dosage controller uses a transmitter operating at 13.56 megahertz (MHz) to both power and control the valve, allowing the surgeon and patient to control expansion non-invasively.
A modified small scale internal combustion Wankel engine is used as a steam expander
. The flow through the Wankel engine is uniflow, and continuous generation of torque is available with three expansions per cycle of the rotor.
The technique requires two stages: a temporary device (tissue expander
) is placed in a submuscular pocket during the first operation if immediate breast reconstruction is performed and at the first stage if delayed reconstruction is performed.
In this design, another heat exchanger (recuperator) is added before the evaporator, using the steam from the expander
to preheat the working fluid.
If not, follow the same process as suggested to align the expander
: loosen the seating stem, seat a bullet, and, holding the works captive, tighten the stem-locking nut.
The second stage consisted of the removal of the tissue expander
and reconstruction of the defect.