IP Library › Granted Patent US 12,564,392
Granted Patent B2
US 12,564,392 · App. 17/895,784 · Granted Mar 3, 2026

Containment bag

Inventors: Dirk Johnson (Louisville, CO); Kristin D. Johnson (Louisville, CO); William N. Gregg (Superior, CO); Steven C. Rupp (Arvada, CO); Steve Choi (Lafayette, CO); Armando Garcia (Longmont, CO); Hana Creasy (Westminster, CO); Chris Underwood (Broomfield, CO)
Assignee: EXIMIS SURGICAL INC.
A61B17/00234A61B17/3417A61B2017/00287A61B2017/3456
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Quick Facts
Patent No.
US 12,564,392
App. No.
17/895,784
Granted
Mar 3, 2026
Kind
B2
Abstract

A containment bag assembly for extracting a tissue specimen comprises a bag having one or more segmenting wires, an outer tube comprising a proximal and distal end, a flexible ring configured to form a top opening of the containment bag, wherein the flexible ring comprises two ring subassemblies, each having a proximal and distal end, a flexible member positioned between and coupled to the distal ends of the two ring subassemblies, wherein, when the flexible member is in a collapsed position, the two ring subassemblies are in a collapsed position and the containment bag is configured to be stored within the outer tube, and wherein, when the flexible member is in an expanded position, the two ring subassemblies and the flexible member bias the top opening of the containment bag to an open position to enable placement of the tissue specimen within the containment bag.

Claims (21)

1 . A containment bag assembly for extracting a tissue specimen from a patient, the containment bag assembly comprising:

a containment bag comprising one or more segmenting wires; an outer tube comprising a distal end and a proximal end, the outer tube further comprising a trocar;

a flexible ring, the flexible ring configured to form a top opening of the containment bag, wherein the flexible ring comprises:

two ring subassemblies, each ring subassembly comprising a proximal end and a distal end; and

a flexible member positioned between and coupled to the distal ends of the two ring subassemblies, wherein the flexible member is movable between a collapsed position and an expanded position, the flexible member further having a lead-in feature, the lead-in feature having a blunt tip, wherein the blunt tip is configured to protrude past the distal end of the outer tube when a distal tip pressure is at or above a threshold and retract back into the lead-in feature of the flexible member when the distal tip pressure is below the threshold;

wherein, when the flexible member is in the collapsed position, the two ring subassemblies are in a collapsed position and the containment bag is configured to be contained within the outer tube, and

when the flexible member is in the expanded position, the two ring subassemblies and the flexible member bias the top opening of the containment bag to an open position to enable placement of the tissue specimen within the containment bag.

2 . The containment bag assembly of claim 1 , wherein the flexible member comprises a hinge, the hinge having a leading angle that is less than 90 degrees from a central axis of the outer tube.

3 . The containment bag assembly of claim 1 , wherein each of the two ring subassemblies comprises a spring arm, and wherein the two ring subassemblies are parallel or substantially parallel to each other when in the collapsed position.

4 . The containment bag assembly of claim 3 , wherein the two ring subassemblies and the flexible member are configured to be disposed in the collapsed position with the containment bag within the outer tube in a first retracted position.

5 . The containment bag assembly of claim 4 , wherein the two ring subassemblies and the flexible member are configured to be pushed into a second advanced position outside the outer tube, and wherein the flexible ring retains the top opening of the containment bag in the open position.

6 . The containment bag assembly of claim 1 , wherein the flexible ring is configured to slide out of the distal end of the outer tube, push the containment bag out of the distal end, move the flexible member to the expanded position, and retain the top opening of the containment bag in the open position.

7 . The containment bag assembly of claim 1 , wherein the flexible member comprises a spring bias.

8 . The containment bag assembly of claim 1 , wherein the containment bag comprises a plurality of layers, including at least one electrically insulative layer for providing an electrosurgical effect between the one or more segmenting wires and a return electrode located in an interior of the containment bag.

9 . The containment bag assembly of claim 8 , wherein each of the at least one electrically insulative layer is composed of a high dielectric constant material selected from a polymer film, polyethylene, Polytetrafluoroethylene (PTFE), Ethylene tetrafluoroethylene (ETFE), Polyethylene terephthalate (PET), polyamide, and polyester.

10 . The containment bag assembly of claim 8 , wherein each of the at least one electrically insulative layer comprises a flexible polymer film having a high dielectric constant coating, the high dielectric constant coating comprising one of a polymer film, polyethylene, Polytetrafluoroethylene (PTFE), Ethylene tetrafluoroethylene (ETFE), Polyethylene terephthalate (PET), polyamide, and polyester.

11 . The containment bag assembly of claim 1 , wherein,

the containment bag comprises a plurality of layers separated by one or more fluid gaps to provide insulation between an interior of the containment bag and an exterior of the containment bag, and each of the one or more fluid gaps is filled with air, deionized water, or silicone.

12 . The containment bag assembly of claim 11 , wherein the one or more fluid gaps of the containment bag are configured to be filled after the containment bag is positioned in an interior cavity of the patient.

13 . The containment bag assembly of claim 1 , wherein the containment bag comprises a plurality of layers that are welded together.

14 . The containment bag assembly of claim 13 , wherein the plurality of layers comprises layers of different refractive indices arranged to reduce or minimize light refraction between an interior of the containment bag and an exterior of the containment bag, and wherein the plurality of layers are arranged in one of an ascending order of refractive index or a descending order of refractive index from the interior to the exterior of the containment bag.

Assignments (1)
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded May 15, 2023
From: JOHNSON, DIRK; JOHNSON, KRISTIN D.; GREGG, WILLIAM N.; RUPP, STEVEN C.; CHOI, STEVE; GARCIA, ARMANDO; CREASY, HANA; UNDERWOOD, CHRIS
To: EXIMIS SURGICAL INC.
Reel/Frame 063640/0985 →
Continuity (2)
Provisional Application 63237024 · Aug 25, 2021
Related Publication 20230085327A1 · Mar 16, 2023
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