A medical device for the treatment of a sinus opening includes a handle, a grooming sheath, a rail, a guide wire, a balloon catheter and a balloon catheter movement mechanism. The handle has a proximal end, a distal end and a longitudinal axis along the length of the handle. The grooming sheath has a distal end and a proximal end with the proximal end of the grooming sheath being attached to the distal end of the handle. The rail has a distal end and a proximal end and disposed partially within the grooming sheath to define an annular lumen is between the rail and the grooming sheath. The guide wire operatively extends from the distal end of the rail and the balloon catheter is disposed at least partially in the handle and annular lumen. The balloon catheter movement mechanism operatively disposed on the handle and configured for advancement and retraction of the balloon catheter through both the handle and the annular lumen and along both the rail and guide wire by user operation of the balloon catheter movement mechanism. A method for treating a sinus opening includes inserting a medical device for the treatment of a sinus opening partially into a patient's anatomy and then positioning a guide wire operatively extending from a rail of a medical device into a sinus opening of the patient. The method further includes advancing a balloon catheter from an annular lumen of the medical device and along both the rail of the medical device and the guide wire. The method also includes treating the sinus opening via inflation of the balloon catheter. In the method, the annular lumen is between the rail and a grooming sheath of the medical device and the advancing is accomplished via user operation of a balloon catheter movement mechanism of the medical device.

Adjacent tissue layers can be accessed using a catheter device with a distal tip having a conductive portion including a first cutting feature and one or more projections extending from the first cutting feature towards an outer diameter of the distal tip. Electrical energy can be supplied to the conductive portion of the device to cut tissue. A stent can be delivered to form a fluid communication between the adjacent tissue layers.

A surgical staple cartridge comprising a cartridge housing and a knife channel is disclosed. The cartridge housing comprises a longitudinal axis. The knife channel is disposed along the longitudinal axis dividing the cartridge housing into a first side and a second side. The surgical staple cartridge further comprises a first, a second, and a third row of staple pockets located on the first side of the cartridge housing. The first, the second, and the third row of staple pockets are aligned parallel to the knife channel. The second row of staple pockets is offset from the first and the third rows of staple pockets along a transverse axis. The surgical staple cartridge further comprises staples removably stored in the first, the second, and the third row of staple pockets. The surgical staple cartridge further comprises a staple driver configured to drive at least four staples from the staple pockets simultaneously.

An articulating working channel system for use with a plurality of flexible tools which are adapted to be interleaved in a single surgical procedure, comprising: a working channel subassembly including a hollow flexible shaft; and a surgical tool subassembly including the flexible tool, wherein the flexible tool includes a flexible tube which is adapted to be inserted into the flexible shaft and wherein the flexible shaft is adapted to be articulated and the flexible tube is adapted to be passively articulated therewith.

Embodiments of the present disclosure includes method and devices for minimally invasive spinal fusion surgery. A method for minimally invasive spinal fusion surgery can include accessing a spinal column through a working channel device, wherein the working channel has a proximal end and a distal end, advancing the working channel so that the distal end pierces an outer layer of a vertebral disc, inserting a disc extractor through the working channel device and into the vertebral disc to cut the vertebral disc into pieces, inserting a disc blade through the working channel device and into the vertebral disc to cut the vertebral disc into pieces, using a disc rake to remove the pieces of the vertebral disc, inserting a disc shaver to clean a number of surfaces of vertebra adjacent to the vertebral disc, and inserting and implanting a disc implant in a space from where the vertebral disc was removed

A tissue resecting device includes a housing having an outer shaft, the outer shaft including a tool portion disposed at a distal end thereof having a window defined therein with a proximal cutting edge. An inner shaft is disposed within the outer shaft and includes proximal and distal ends, the inner shaft configured to rotate upon actuation thereof. A cork-screw member extends distally from the distal end of the inner shaft and into the window. The cork-screw member is configured to rotate concomitantly with the inner shaft and includes a barb at a distal end thereof configured to pierce and retain tissue thereon. Upon rotation of the inner shaft, the barb pierces and retains tissue and withdraws tissue proximally along the cork-screw member and into the outer shaft and wherein excess tissue is excised by the proximal cutting edge of the window as the tissue is withdrawn through the outer shaft.

The invention relates surgical abdominal methods of treating obesity in a patient by implanting a volume filling device that, when implanted in a patient, reduces the food cavity in size by a volume substantially exceeding the volume of the volume filling device. Also disclosed is a laparoscopic instrument for providing a volume filling device to be invaginated in the stomach wall of a human patient to treat obesity.

An apparatus for treating obesity comprises a volume filling device formed by at least two segments and is provided and following implantation, the device is placed resting against the stomach wall of the patient to reduce the inner volume of the stomach, thereby affecting the patients appetite.

Systems, devices, and methods for controlling cooperative surgical instruments with variable surgical site access trajectories are provided. Various aspects of the present disclosure provide for coordinated operation of surgical instruments accessing a common surgical site from different approach and/or separate body cavities to achieve a common surgical purpose. For example, various methods, devices, and systems disclosed herein can enable the coordinated treatment of tissue by disparate minimally invasive surgical systems that approach the tissue from varying anatomical spaces and must operate differently, but in concert with one another, to effect a desired surgical treatment.

This document relates to devices and methods for the treatment of heart conditions. For example, this document provides devices and methods for treating heart failure with preserved ejection fraction, including diastolic heart failure, by performing a pericardial modification procedure. The methods for treating diastolic heart failure of a patient include: creating an opening in a parietal layer, and only in the parietal layer, of a pericardial tissue of the patient. The creation of this opening reduces pressure exerted by the pericardial tissue on a heart of the patient.