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Gastrointestinal anchor with optimal surface area

a surface area and gastrointestinal technology, applied in the field of gastrointestinal anchors, to achieve the effect of avoiding stomach wall folding, reducing tissue damage or device dislocation, and minimizing tissue stress

Inactive Publication Date: 2005-06-30
INTRAPACE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

"The present invention provides a device, system, and method for attaching an anchor to the stomach wall for a relatively long term use. The anchor is designed to distribute the load of the device over a large surface area, reducing the risk of erosion or dislodgement. The device can be used for therapeutic purposes such as stimulating the stomach to treat nausea, obesity, or pain symptoms. The attachment device is designed to be easily endoscopically removed. The invention also includes an endoscopic delivery system for delivering the stimulator through the esophagus and into the stomach wall. The electrodes of the stimulation device may also be used for diagnostic purposes such as sensing and observing electrical activity in the stomach wall."

Problems solved by technology

However, it is contemplated that such load distribution may include an unevenly distributed load that has the same general effect of bearing the load of the anchor such that the anchor is less likely to erode through or dislodge.

Method used

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  • Gastrointestinal anchor with optimal surface area
  • Gastrointestinal anchor with optimal surface area
  • Gastrointestinal anchor with optimal surface area

Examples

Experimental program
Comparison scheme
Effect test

first embodiment

[0054] Referring to FIGS. 10-14 and 18-22, a stimulator 10 of a first embodiment is illustrated. The stimulator 10 comprises an anchor 123 and a main body portion 20. The anchor 123 comprises an elongate member 124 having and expandable distal end 125 and a stimulating electrode 126 in the form of a ring of a corrosion resistant metal conductor such as Platinum, Gold, Tantalum, Titanium or suitable alloys thereof, extending around the elongate member 124 just proximal of the expandable end 125. The anchor 123 may be constructed of a radiopaque material. Alternatively, the anchor 123 may include radiopaque markers located on the device so that the location and orientation of the device may be identified, particularly after it has been placed. At least a portion of the anchor 123 is preferably coated with an antibiotic material, such as gentamicin sulphate or a silver / silver salts coating, particularly in locations that it will extend through or come in contact with the stomach wall. ...

second embodiment

[0072]FIGS. 23 and 24 illustrate the stimulator of the present invention. Stimulator 210 comprises a main body portion 220 and an anchor 223. The anchor 223 comprises an elongate proximal member 225. The elongate proximal member 225 includes a tether opening 235 in the proximal end, electrical contacts 228, 238, and a notch 227 for connecting the main body portion 220 to the anchor 223. The distal portion 240 of the anchor 223 comprises two prongs 241, 242. Prongs 241, 242 have expandable distal ends 243, 244 respectively that are constructed in a similar manner as the expandable distal end 125 described above with respect to the first preferred embodiment. A stimulating electrode 245 is located on prong 241 and an electrically opposite second stimulating electrode 246 is located on prong 242. Stimulating electrode 245 and second stimulating electrode 246 are coupled to electrical contacts 228 and 238 respectively by conductors 229 and 239 extending through prongs 241, 242 respectiv...

third embodiment

[0084]FIGS. 27A and 27B illustrate the present invention showing an anchor device for use with a stimulator or other functional device of the present invention. The anchor 263 comprises an elongate body 264, an expandable distal portion 265 having a sharp tip 270, a bipolar electrode pair 266, 267, and a bumper 275 located on a proximal portion of the elongate body 264. The expandable distal portion 265 comprises a flexible disk 271 for engaging the outer stomach wall. The disk 271 has an inner surface 271 a that interfaces with the outer surface 100a of stomach wall 100 and may, for example be coated with an antibiotic material, such as gentamicin sulphate or a silver / silver salts coating such as a powder. The bipolar stimulating electrode pair comprises electrode 266 located on the elongate body 264 and a plurality of electrodes 267 electrically opposite from electrode 266, located at the end of the expandable distal portion 265. The electrodes may be separately coupled to electri...

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PUM

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Abstract

A device, system and method for anchoring a device to a stomach is provided. The device may be, among other things, a sensor for sensing various parameters of the stomach or stomach environment, or may be a therapeutic delivery device. The anchor of the device is constructed to resist pull out forces. An anchor has an optimal weight to surface area ratio.

Description

RELATED APPLICATION DATA [0001] This application is a continuation in part of U.S. application Ser. No. 10 / 295,115, filed Nov. 14, 2002, which is a divisional of U.S. application Ser. No. 09 / 847,884 filed May 1, 2001 all of which are incorporated herein by reference.FIELD OF THE INVENTION [0002] This invention relates to an anchor for attaching a device to the stomach. BACKGROUND OF THE INVENTION [0003] Attaching devices to the stomach has a number of challenges including avoiding detachment, for example, due to the contractions of the stomach dislodging the device. In particular, attaching device to the inside of the stomach wall has been challenging for a variety of reasons. The inside of the stomach is highly acidic and the stomach wall tends to remodel making it difficult to retain a device attached to the stomach wall. Attaching a device to the stomach becomes more difficult where the stomach is more active or contractile, for example, in the antrum region. Also the purpose of ...

Claims

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Application Information

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Patent Type & Authority Applications(United States)
IPC IPC(8): A61B17/00A61F5/00A61M25/02A61N1/36
CPCA61B5/4238G01N27/126A61B17/3421A61B17/3478A61B2017/00004A61B2017/00017A61B2017/00026A61B2017/00084A61B2017/00477A61B2017/306A61B2017/3488A61F5/0003A61M25/02A61M2025/0233A61M2025/028A61N1/0509A61N1/0517A61N1/36007A61N1/372A61B5/6882
Inventor IMRAN, MIR A.
Owner INTRAPACE
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