46 results about "Duodenoscopes" patented technology

The present invention relates to methods and devices for performing endoscopic cannulation, papillotomy and sphincterotomy and similar procedures. According to the present state of the art, endoscopic cannulation of the common bile duct and papillotomy and similar procedures are accomplished by advancing the device into an endoscope / duodenoscope so that the distal tip of the device exits the endoscope adjacent the sphincter muscles at the Papilla of Vater. The endoscope mechanisms are then manipulated to orient the distal tip of the device to the desired position for proper cannulation of the duct. Due to inconsistencies in, for example, the sphincterotome, anatomy, and endoscope manipulation, it is difficult to accurately and consistently position the sphincterotome for proper cannulation. The steerable sphincterotome of the present invention allows the physician to control the position of the distal tip of the device independently of the endoscope and adjust for inconsistencies in the device and the anatomy. According to the present invention, the handle to which the cutting wire is attached is freely rotatable relative to the catheter. The handle, secured to the cutting wire but rotatable relative to the shaft of the catheter, provides a mechanism to rotate the wire, transmitting the force to rotate the device tip. With the handle rotating independently of the shaft at the proximal end, the force can be applied directly to the distal tip without twisting the entire shaft. Also a rotation lock to maintain the orientation of the tip and / or a rotation marking, to indicate the amount of rotation may be included.

A method and apparatus for introducing a first elongate medical device and short wire guide that are coupled together into a work site and remotely disconnecting them within the work site such that a secondary device comprising a catheter member can be introduced over the wire guide to the work site, and / or a second wire guide can be introduced to the work site via a passageway of the primary access device. A system of indicia, such as radiopaque or viewable markers, permits the operator to monitor the relative alignment of the devices within the work site to determine when uncoupling has occurred. In one example of the method, a wire guide and primary access device (e.g., a sphincterotome) is coupled to the wire guide and introduced via a duodenoscope into the biliary system. After performing a first medical operation, the devices are uncoupled with the wire guide being left within the biliary system such that a secondary access device, such as a balloon, biopsy device, stent delivery catheter, dilator, etc., can be introduced to perform a second medical operation without a traditional over-the-wire exchange being required. In another example of the method, a prosthesis, such as a valve or stent, is placed within the work site coupled to a wire guide which is remotely disconnected within the work site and a secondary device, such as a dilation balloon or second prosthesis, is introduced into the work site after the first delivery system is removed.

A method and apparatus for introducing a first elongate medical device and short wire guide that are coupled together into a work site and remotely disconnecting them within the work site such that a secondary device comprising a catheter member can be introduced over the wire guide to the work site, and / or a second wire guide can be introduced to the work site via a passageway of the primary access device. A system of indicia, such as radiopaque or viewable markers, permits the operator to monitor the relative alignment of the devices within the work site to determine when uncoupling has occurred. In one example of the method, a wire guide and primary access device (e.g., a sphincterotome) is coupled to the wire guide and introduced via a duodenoscope into the biliary system. After performing a first medical operation, the devices are uncoupled with the wire guide being left within the biliary system such that a secondary access device, such as a balloon, biopsy device, stent delivery catheter, dilator, etc., can be introduced to perform a second medical operation without a traditional over-the-wire exchange being required. In another example of the method, a prosthesis, such as a valve or stent, is placed within the work site coupled to a wire guide which is remotely disconnected within the work site and a secondary device, such as a dilation balloon or second prosthesis, is introduced into the work site after the first delivery system is removed.

An endoscopically-deployable tissue-manipulation device including an elongate, generally tubular outer body having a proximal portion and a distal end portion that may be configured as sufficiently flexible to traverse the working channel of a flexible endoscope (e.g., side-viewing duodenoscope). The outer body may include an outer body lumen extending longitudinally between the proximal and distal portions. An anchoring structure of the device will include an elongate inner body that may extend through the outer body lumen and be configured to include a first linkage member attached to the inner body, a second linkage member that is pivotably attached to the first linkage member and to the outer body.

A balloon catheter (400) may include a distal anchoring balloon (404) and a proximal hub (410) that is removable from the catheter body. The catheter body may include a valve structure (420) providing for maintaining the balloon in an inflated state during and after removal of the proximal hub. The valve preferably is constructed such that removal of the hub provides a low-profile proximal catheter end that will allow that proximal catheter end to pass through an endoscopic surgical device such as, for example, through an accessory channel of a standard duodenoscope and / or an ultra- slim endoscope / cholangioscope, facilitating a scope- exchange for use during, for example, a cholangioscopy or pancreatoscopy procedure. A method useful for scope exchange and / or introducing another elongate surgical device may utilize a balloon catheter with a distal anchoring balloon and a proximal hub that is removable from the catheter body.

The invention relates to devices and methods for visualizing and / or interacting with internal body tissues. More particularly, the present invention relates to endoscopic methods and devices for visualizing and / or interacting with the gastrointestinal and / or pancreaticobiliary systems, such as with one use or disposable devices, such as with duodenoscopes. A device for visualizing and / or interacting with internal body tissues may generally include a handpiece, a distal assembly, and / or a connecting conduit. A plurality of conduits and / or channels may span through the connecting conduit from the handpiece to the distal assembly, and may, for example, carry fluid / gas connections, electrical / sensor connections, such as for a camera, mechanical connections and / or carry medical devices througha working channel. The device may also reduce the needs associated with reusable devices such as for reducing risks associated with improper sterilization.

The invention relates to the technical field of endoscopic image processing, in particular to a bile duct stent specification selection method and device.The method comprises the steps that a duodenoscope area, a guide wire area and a bile duct area in an angiography image in endoscopic retrograde bile duct angiography are recognized, and the duodenoscope body pixel diameter in the duodenoscope area is determined; according to the guide wire area and the bile duct area, whether bile duct stenosis exists or not is determined; if the bile duct stenosis exists, determining a corresponding target guide wire section according to the type of the bile duct stenosis; determining the pixel length of the target guide wire section, and calculating the physical length of the target guide wire section according to the pixel diameter of the body of the duodenoscope, the physical diameter of the body of the duodenoscope and the pixel length of the target guide wire section; according to the physical length of the target guide wire section, the specification of the bile duct stent to be implanted is determined. According to the invention, the accuracy of specification selection of the bile duct stent is improved, and the time of exposure of medical staff and patients to electromagnetic radiation in the ERCP operation process is shortened.