Abstract: An abdominal decompression apparatus reduces intra-abdominal pressure in patients by application of negative pressure to the patient's abdomen. Preferably, the negative pressure is applied continuously at low negative pressures (e.g., -20 to -40 mm Hg) for extended periods of time (e.g., 6-12 hours). Changes in the patient's intra-abdominal pressure can be monitored using measurements of the patient's bladder pressure, and treatments can be designed to achieve desired decreases in bladder pressure. To alleviate pain and permit maximum decrease in intra-abdominal pressure, a countertraction mechanism is connected to the shell which encloses the patient's abdomen, and counters the negative pressure induced downward movement of the shell on the patient's chest. The countertraction mechanism is sufficient to reduce or eliminate the negative pressure induced downward movement but is less than an amount which would cause loss of vacuum pressure within said shell.

Abstract: An abdominal decompression apparatus is used to treat a variety of disorders including acute abdominal compartment syndrome, increased intra-abdominal pressure related morbidity in severely obese persons, and pre-eclampsia and other complications associated with increased abdominal pressure in pregnancy. The abdominal decompression apparatus is worn for an extended period of time (e.g., 6-12 hours at a time), with relatively low levels of pressure being applied (e.g., -20 to -45 mm Hg). Preferably, abdominal decompression is performed on a continuous basis with the final pressure being gradually achieved. In a preferred embodiment, the patient's urinary bladder pressure is used as a measure of intra-abdominal pressure. The sensed urinary bladder pressure can be used to gauge the effectiveness of treatment as well as to control parameters of the abdominal decompression device (e.g., time of use, pressure utilized, etc.).