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The Aqueous Immersion Surgical System (AISS) allows clear surgical visualization and bleeding control in reduced gravity. This fluid-filled system is crucial for spaceflight medical emergencies.

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Area of Science:

  • Biomedical Engineering
  • Aerospace Medicine
  • Surgical Innovation

Background:

  • Expeditionary spaceflight presents significant health risks, including medical emergencies requiring surgical intervention.
  • Current surgical care in reduced gravity faces challenges with visualization and contamination.
  • The Aqueous Immersion Surgical System (AISS) is being developed to address these issues.

Purpose of the Study:

  • To evaluate the efficacy of the Aqueous Immersion Surgical System (AISS) for surgical procedures in reduced gravity.
  • To assess AISS's ability to maintain a clear surgical field and control bleeding.
  • To compare fluid immersion with air environments for surgical care in space.

Main Methods:

  • A prototype AISS was tested during parabolic flights simulating reduced gravity.
  • A watertight chamber with a mock vascular network was used to simulate hemorrhage.
  • Experiments compared surgical field visualization and hemostasis in fluid versus air environments.

Main Results:

  • The AISS successfully maintained visualization of the surgical field during simulated hemorrhage.
  • Raising interchamber pressure within the AISS effectively staunched bleeding.
  • Fluid immersion facilitated direct suction application to the hemorrhage site.

Conclusions:

  • The AISS prototype demonstrated effectiveness in maintaining surgical field visualization in reduced gravity.
  • Fluid immersion, as utilized by AISS, aids in achieving hemostasis during spaceflight surgery.
  • Findings support the use of fluid-filled systems for improved surgical outcomes in microgravity environments.