Insufflation stabilization system

Patent metadata

Field	Value
Publication number	US-9956358-B2
Application number	US-201615282781-A
Country	US
Kind code	B2
Filing date	Sep 30, 2016
Priority date	Sep 30, 2015
Publication date	May 1, 2018
Grant date	May 1, 2018

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.

First claim

What is claimed is:

1. 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. The gas flow pressure conditioning apparatus of claim 1 , further comprising an inlet fluid conduit fluidly coupled to the inlet fluid port.

3. The gas flow pressure conditioning apparatus of claim 1 , wherein the elastomeric pouch comprises an outlet port fluidly coupled to the outlet fluid conduit.

4. The gas flow pressure conditioning apparatus of claim 1 , wherein the elastomeric pouch has a volume of at least about 6.5 liters.

5. The gas flow pressure conditioning apparatus of claim 1 , wherein the second inner diameter is at least twice the first inner diameter.

6. The gas flow pressure conditioning apparatus of claim 1 , further comprising an outer envelope positioned around the reservoir.

7. The gas flow pressure conditioning apparatus of claim 6 , wherein the outer envelope comprises an elastomeric film material.

8. The gas flow pressure conditioning apparatus of claim 1 , further comprising an outer sleeve positioned around the reservoir.

9. The gas flow pressure conditioning apparatus of claim 8 , wherein the outer sleeve is heat welded to the reservoir at a seam.

10. An insufflation system comprising:
a surgical site access port comprising:
a port surface;
an access port insufflation port having a first insufflation diameter;
a first trocar positionable through the port surface, the first trocar having a first instrument channel extending therethrough; and
a second trocar positionable through the port surface, the second trocar having a second instrument channel extending therethrough and a trocar insufflation port having a second insufflation diameter greater than the first insufflation diameter of the access port insufflation port; and

a gas flow pressure conditioning apparatus for use with a pulsing insufflation pump, the apparatus comprising:
an inlet fluid conduit 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 the surgical site access port; and
a reservoir fluidly coupled to the inlet fluid conduit and the outlet fluid conduit; and

wherein the inlet fluid conduit has a first inner diameter and the outlet fluid conduit has a second inner diameter larger than the first inner diameter.

11. The insufflation system of claim 10 , wherein the trocar insufflation port of the second trocar is sized to receive the outlet fluid conduit.

12. The insufflation system of claim 10 , wherein the reservoir comprises an elastomeric film pouch.

13. The insufflation system of claim 10 , wherein the reservoir has a volume of at least 6.5 liters.

14. The insufflation system of claim 10 , wherein the second inner diameter is greater than at least about 0.25 inches.

15. The insufflation system of claim 10 , wherein the second inner diameter is approximately 0.5 inches.

Assignees

• Applied Med Resources

Inventors

• Sias Ralph
• Do Alexandra
• Poulsen Nikolai
• Pravong Boun
• Pravongviengkham Kennii
• Mcmorrow Timothy
• Miles W F Anthony

Classifications

• A61M2205/3334

  Measuring or controlling the flow rate · CPC title

• A61B2017/00818

  Treatment of the gastro-intestinal system · CPC title

• A61B17/3474

  Insufflating needles, e.g. Veress needles · CPC title

• A61M2205/3355

  Controlling downstream pump pressure · CPC title

• A61M2202/0225

  Carbon oxides, e.g. Carbon dioxide · CPC title