Polypectomy device and method of use
AssigneeU.S. Endoscopy Group, Inc.
InventorsDean Secrest, K. John, Christopher Kaye
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Abstract
A polyp removal tool and method of use is disclosed. The tool includes a main body, an elongated hollow conduit fixed to the body, a handle, a cable assembly, a suction assembly and an irrigation system. The handle is used to actuate a snare at the end of a cable for transecting of polypoid tissue. The suction assembly is used in pre-conditioning the tissue for cutting and in polyp retention after cutting. The irrigation system is included for tissue recovery after transection. The tool may include a screen for capture of tissue within the device.
Claims41
A tissue removal tool for use with an endoscope, said tool comprising:
- a) a main body having a distal end and a proximal end, and defining a passage between said distal end and said proximal end;
- b) a conduit attached to said body distal end;
- c) a handle attached to said body proximal end, said handle having a first member connected to said body and a second member slidably connected to said first member;
- d) a cable assembly positioned within said conduit and said passage;
- said cable assembly comprising:
- i. an extendable and retractable snare;
- and
- ii. a cable having a first end attached to said handle second member and a second end fixed to said snare;
- e) a suction assembly in communication with said conduit, said suction assembly comprising a tube attachable to a suction source, and an actuator for control of air flow through said tube toward said suction source;
- and
- f) an irrigation system in communication with said conduit, said irrigation system comprising an inlet port attached to said body.
A polypectomy device comprising:
- a) a main body defining a passage between a distal end and a proximal end;
- b) a flexible first tube fixed to said body distal end and insertable into an instrument channel of an endoscope;
- c) a snare actuator attached to said body proximal end;
- d) a cable assembly at least partially positioned within said first flexible tube and said passage;
- said cable assembly comprising:
- i. a snare loop movable by said snare actuator for transecting a polyp;
- ii. a cable having a first end attached to said snare actuator and a second end attached to said snare loop;
- e) a suction assembly in communication with said passage and said conduit, said suction assembly comprising a flexible second tube, and a valve for control of air flow from said first tube toward a suction source through said second tube;
- and
- f) an irrigation system in communication with said passage and said conduit, said irrigation system comprising an inlet port attached to said body.
A method for removing a polyp from a gastro-intestinal wall of a patient;
- the method comprising:
- a) selecting a single polypectomy device having independent snare, suction, and irrigation systems;
- b) inserting said polypectomy device through essentially the entire length of an instrument channel of said endoscope;
- c) intubating a patient with said endoscope;
- d) identifying a polyp for removal;
- e) applying suction to lift the polyp relative to the gastro-intestinal wall;
- f) extending a snare loop around the circumference of said polyp while said polyp is in said lifted position;
- g) retracted said snare loop to transect said polyp;
- and
- h) retaining said polyp under suction at a distal end of said polypectomy device.
A tissue removal tool for use with an endoscope, said tool comprising:
- a) a main body having a distal end and a proximal end, and defining a passage between said distal end and said proximal end;
- b) a conduit attached to said body distal end;
- c) a handle attached to said body proximal end, said handle having a first member connected to said body and a second member slidably connected to said first member;
- d) a cable assembly positioned within said conduit and said passage;
- said cable assembly comprising:
- i. a snare;
- and
- ii. a cable having a first end attached to said handle second member and a second end fixed to said snare;
- e) a suction assembly in communication with said conduit, said suction assembly comprising a tube attachable to a suction source, and an actuator for control of air flow through said tube toward said suction source;
- and
- f) a screen disposed between said suction assembly actuator and said snare.
Dependencies are inferred from the claim text.