US 9,956,358 B2 · Insufflation stabilization system

Abstract

Pressure conditioning systems for supplying insufflation gas to an open-ended body conduit such as a rectal cavity during a transanal minimally invasive surgery (TAMIS) procedure can reduce billowing of walls of the body conduit. A pressure conditioning system can include a pressure storage component, an accumulator, and a flow restrictor. The pressure storage component can include a variable volume reservoir that is biased to a relatively low volume state. The flow restrictor can include insufflation tubing with a restrictor plate having a relatively low diameter orifice. The pressure storage component, accumulator, and flow restrictor can be fluidly connected in various orders in series or as side branches from a gas flow conduit. Despite a pulsed or otherwise discontinuous insufflation gas flow and leakage and absorption from the body conduit, the pressure conditioning system can maintain a constant pressure within the body conduit.

Claims15

Dependent claims

A gas flow pressure conditioning apparatus for use with a pulsing insufflation pump, the apparatus comprising:

an inlet fluid port configured to receive a flow of gas from the pulsing insufflation pump;
an outlet fluid conduit configured to provide a flow of insufflation gas to a surgical site;
a reservoir fluidly coupled to the inlet fluid port and the outlet fluid conduit, the reservoir comprising an elastomeric pouch formed of a film material configured to expand and contract responsive to the flow of gas at the inlet fluid port and the flow of insufflation gas at the outlet fluid conduit;
and
wherein the inlet fluid port has a first inner diameter and the outlet fluid conduit has a second inner diameter larger than the first inner diameter.

2 more elements

Dependencies are inferred from the claim text.

Insufflation stabilization system

Life of this patent

Insufflation stabilization system

Life of this patent

Abstract

Claims15