Granted Patent B2

US 12,331,748 · App. 18/346,675 · Granted Jun 17, 2025

Inventors: Chad S. Frampton (American Fork, UT); Shawn K. Horner (Woods Cross, UT); Darcy W. Greep (Herriman, UT); Frederick Shelton (Hillsboro, UT); Jason Harris (Lebanon, OH); David Yates (West Chester, OH); Roger Millis (West Jordan, UT)

Assignee: Megadyne Medical Products, Inc.

F04C29/06A61B18/14A61M1/80F04C18/0207F04C18/0215F04C18/12F04C28/08F04C29/0085A61B2018/00595A61B2018/00601A61B18/1206A61B18/16A61B2218/008A61M1/73A61M2202/02A61M2205/103A61M2205/42A61M2205/75F04C29/0071F04C2240/40F04C2270/051F04C2270/125F04C2270/135

Abstract

Claims (29)

1. A smoke evacuation assembly comprising:

a filter;

a dual scroll pump having a sealed positive displacement airflow path, the dual scroll pump comprising:

a first scroll pump comprising a moving scroll and a stator scroll, the moving scroll being configured to rotate in a first direction; and

a second scroll pump comprising a moving scroll and a stator scroll, the moving scroll being configured to rotate in a second direction that is opposite to the first direction,

wherein the dual scroll pump has a first operating pressure and a second operating pressure, and wherein a first flow rate of a gas flowing through the sealed positive displacement airflow path at the first operating pressure is the same as a second flow rate of a gas flowing through the sealed positive displacement airflow path at the second operating pressure, and wherein a difference in pressure between the first operating pressure and the second operating pressure is equal to or greater than 1.5 psig; and

a motor engaging the dual scroll pump to rotate the moving scrolls.

2. The smoke evacuation assembly of claim 1 , wherein the first scroll pump and the second scroll pump are arranged in parallel to one another.

3. The smoke evacuation assembly of claim 1 , wherein the first scroll pump and the second scroll pump are arranged in series with one another.

4. The smoke evacuation assembly of claim 1 , further comprising:

a first housing at least partially surrounding the smoke evacuation assembly;

a second housing at least partially surrounding the motor and the dual scroll pump;

an interface between the first housing and the second housing comprising one or more vibration absorption mechanisms; and

one or more vibration absorption mechanisms disposed on a bottom outer surface of the first housing.

5. The smoke evacuation assembly of claim 1 , wherein the first scroll pump and the second scroll pump are different sizes from one another.

6. The smoke evacuation assembly of claim 1 , wherein the airflow path comprises one or more at least partially flexible tubes, wherein at least one at least partially flexible tube of the one or more at least partially flexible tubes is disposed between the filter and the dual scroll pump.

7. The smoke evacuation assembly of claim 6 , further comprising an exhaust mechanism, wherein at least one at least partially flexible tube of the one or more at least partially flexible tubes is disposed between the dual scroll pump and the exhaust mechanism.

8. A smoke evacuation system comprising:

a filter;

a dual scroll pump configured to draw a gas through the filter, the dual scroll pump comprising:

a first scroll pump comprising a moving scroll and a stator scroll, the first scroll pump being of a first size; and

a second scroll pump comprising a moving scroll and a stator scroll, the second scroll pump being of a second size that is larger than the first size of the first scroll pump,

wherein the dual scroll pump has a first operating pressure and a second operating pressure, and wherein a first flow rate of a gas at the first operating pressure is the same as a second flow rate of a gas flowing at the second operating pressure, and wherein a difference in pressure between the first operating pressure and the second operating pressure is equal to or greater than 1.5 psig; and

one or more motors engaged with the dual scroll pump and configured to rotate the moving scrolls,

wherein the first scroll pump is configured to provide a constant low-level airflow over time and the second scroll pump is configured to provide a higher airflow over time.

9. The smoke evacuation system of claim 8 , wherein the moving scroll of the first scroll pump is configured to rotate in a first direction.

10. The smoke evacuation system of claim 9 , wherein the moving scroll of the second scroll pump is configured to rotate in a second direction that is opposite to the first direction.

11. The smoke evacuation system of claim 8 , wherein the first scroll pump and the second scroll pump are arranged in parallel to one another.

12. The smoke evacuation system of claim 11 , wherein the first scroll pump and the second scroll pump are arranged in series with one another.

Assignments (1)

Continuity (2)

References Cited (281)