Surgery – Instruments – Surgical mesh – connector – clip – clamp or band
Reexamination Certificate
2002-07-18
2004-12-28
Truong, Kevin T. (Department: 3731)
Surgery
Instruments
Surgical mesh, connector, clip, clamp or band
C606S139000
Reexamination Certificate
active
06835200
ABSTRACT:
BACKGROUND OF THE INVENTION
Brief Description of the Related Art
This invention relates to devices and methods for treating gastroesophageal reflux disease, and more particularly, the invention relates to a minimally invasive device and method for creating and fixating a fold of tissue at or near the junction of the esophagus and the stomach.
Gastroesophageal reflux disease (GERD) is a common upper-intestinal disorder in which contents of the stomach flow inappropriately from the stomach into the esophagus. Backflow of gastric contents into the esophagus results when gastric pressure is sufficient to overcome the resistance to flow that normally exists at the gastroesophageal junction (GEJ), or when gravity acting on the contents is sufficient to cause flow through the GEJ. Medication, open surgical procedures, laparoscopic surgical procedures, and endoscopic techniques are known for treating GERD.
SUMMARY OF THE INVENTION
According to one aspect of the invention, a medical instrument includes moveable arms configured for fixating the wall of the stomach to the wall of the esophagus for the treatment of GERD. In one embodiment, the instrument includes a proximal end, a shaft, a retroflexing portion, movable arms, a retractor, and an implant. The movable arms are oriented with respect to the retroflexing portion in a position that allows the stomach wall to be folded against the esophagus wall. In one such embodiment of this instrument the movable arms open and close in the same plane within which the retroflexing portion moves. This configuration is in contrast to certain embodiments of the medical instrument described in the U.S. patent application Ser. No. 09/859,579, entitled “TISSUE RECONFIGURATION,” filed May 18, 2001, in which the moveable arms are oriented in a plane rotated 90° from the plane in which the retroflexing portion moves. The mechanism of operation of the medical instrument of the current invention is as is disclosed in the patent applications incorporated by reference and listed above.
According to another aspect of the invention, a method of treatment includes fixating the wall of the stomach to the wall of the esophagus for the treatment of GERD.
According to another aspect of the invention, a method includes advancing an apparatus having an elongated member transorally into the stomach. The apparatus includes a distal end effector having first and second members configured to engage tissue. The first and second members are movable relatively toward one another generally in a first plane. The method includes moving the distal end effector relative to the elongated member in the first plane such that the distal end effector is retroflexed out of alignment with the elongated member to position the first and second members for engagement with the tissue. At least one of the first and second members carries a fixation device for fixing engaged portions of tissue together.
Embodiments of this aspect of the invention may include one or more of the following features. The method includes engaging tissue by moving the first and second members relatively toward one another generally in the first plane. Moving the first and second members engages a first tissue section with a first securing part of the fixation device and a second tissue section with a second securing part of the fixation device. The method includes piercing the tissue with a third member of the distal end effector prior to engaging the tissue with the first and second members.
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Andrews Richard
Barenboym Michael
Cerier Jeffrey C.
Chinnock Randal B.
Cruz Amos
Fish & Richardson P.C.
ndo surgical. Inc.
Truong Kevin T.
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