The patent's inventors are Stack, Richard S. (
This patent was filed on
From the background information supplied by the inventors, news correspondents obtained the following quote: "In various types of surgical procedures, medical devices are implanted at locations within the human body that are neither susceptible to direct visualization by the surgeon nor accessible by the surgeon's fingers. Such procedures are therefore performed using endoscopes for visualization and endoscopic instruments for carrying out the procedures. Once such procedure is the implantation of satiation devices used to limit volume of food intake and/or control feeling of hunger in patients suffering from obesity. In a preferred approach, such devices are passed through the esophagus into the stomach and are then secured within the stomach using sutures, clips, staples, adhesives etc. The tools and methods described herein are useful for introducing satiation devices into the stomach and for manipulating the devices into the appropriate implant position, and will thus will be described in that context. It should be understood, however, that these tools and methods may also be well suited for use with other types of medical implants and/or in other areas of the body.
"An anatomical view of a human stomach S and associated features is shown in FIG. 1. The esophagus E delivers food from the mouth to the proximal portion of the stomach S. The z-line or gastro-esophageal junction Z is the irregularly-shaped border between the thin tissue of the esophagus and the thicker tissue of the stomach wall. The gastro-esophageal junction region G is the region encompassing the distal portion of the esophagus E, the zline, and the proximal portion of the stomach S.
"Stomach S includes a fundus F at its proximal end and an antrum A at its distal end. Antrum A feeds into the pylorus P which attaches to the duodenum D, the proximal region of the small intestine. Within the pylorus P is a sphincter that prevents backflow of food from the duodenum D into the stomach. The middle region of the small intestine, positioned distally of the duodenum D, is the jejunum J.
"Implant devices for use in controlling obesity are shown and described in U.S. application Ser. No. 09/940,110, filed
"Optimal performance of the pouch is achieved when substantially all of the food ingested by the patient passes into the pouch. However, because of the flexible nature of the tissue of the gastro-esophageal junction region and/or the material forming the pouch, gaps can occur between the proximal perimeter of the pouch and adjacent tissue in regions between neighboring anchor points. Food entering or accumulating in the pouch can ooze from these gaps and pass around the exterior of the pouch directly into the stomach, thereby decreasing the effectiveness of the prosthesis. It is thus desirable to attach the pouch in a position and at an orientation that minimizes formation of gaps between anchor points."
Supplementing the background information on this patent, NewsRx reporters also obtained the inventors' summary information for this patent: "Described herein is a positioning tool having an elongate portion for carrying a medical implant. Also described is a method of positioning a medical implant using an elongate positioning tool. One form of the method includes positioning a medical implant on a distal portion of an elongate positioning tool, inserting the positioning tool with the implant thereon into a body cavity, manipulating the positioning tool to position the implant into contact with tissue at an attachment location, attaching the implant to surrounding tissue at the attachment location, separating the implant from the positioning tool, and withdrawing the positioning tool from the body. In a preferred embodiment, the position of the implant is visually confirmed using an endoscope before the implant is attached to surrounding tissue. In one embodiment, the implant is a satiation device and the body cavity is the esophagus and/or stomach. In an alternative embodiment, an expansion structure on the distal end of the elongate portion expands and/or contracts the medical implant to facilitate positioning."
For the URL and additional information on this patent, see: Stack, Richard S.; Glenn, Richard A.; Balbierz, Daniel; Lunsford, John; Athas,
Keywords for this news article include: Gastroenterology, Biotechnology Companies,
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