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System and method for guiding of gastrointestinal device through the gastrointestinal tract

A gastrointestinal, gastrointestinal technology that is applied in the direction of catheters, applications, guide wires, etc., and can solve problems such as restricted tubes, discomfort, etc.

Inactive Publication Date: 2010-11-17
TEL HASHOMER MEDICAL RES INFRASTRUCTURE & SERVICES
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the tube is pulled through the GI system from a location outside the GI system, which can cause discomfort and limit options for tube introduction

Method used

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  • System and method for guiding of gastrointestinal device through the gastrointestinal tract
  • System and method for guiding of gastrointestinal device through the gastrointestinal tract
  • System and method for guiding of gastrointestinal device through the gastrointestinal tract

Examples

Experimental program
Comparison scheme
Effect test

example 1

[0087] Example 1: In Vitro Testing on Pig Intestine Segments

[0088] A wire with a diameter of 0.034 cm was used to determine the maximum force required for the guide wire to tear the intestinal wall. The bowel segment is cut on its longitudinal axis, cut open on a rigid surface and fixed. The wire is then manually pressed and pulled over the luminal (mucosal) side of the bowel segment several times with increasing manual pressure applied until maximum force is applied. No macroscopic tearing of the intestinal wall was observed.

example 2

[0089] Example 2: Pig neutralization in vivo test

[0090] A 22 m wire with a diameter of 0.034 cm was coiled and inserted into an oval guide element measuring 30 x 11 mm. The filaments consist of polyamide, while the guiding elements consist of polycarbonate. The wire is coiled onto itself such that continued pulling on its proximal end causes it to unravel in an inside-out fashion. The proximal end is fixed to the inner wall of the guide element. The guide element is provided with an outlet on one side of its longitudinal axis through which a 30 cm wire is passed and left outside the guide element.

[0091] 60 kg sows were studied after a 24 hour fast (water ad libitum).

[0092] Pigs were anesthetized as follows:

[0093] Premedication : Ketamine hydrochloride 10mg / kg+xylazine 1-2mg / kg IM

[0094] After intravenous cannulation of IV diazepam 10 mg / pig

[0095] induce : Isoflurane 5% mask

[0096] maintain : Following intubation, isoflurane 1-3% (IPPV) was deliv...

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Abstract

Systems and methods for guidance of a gastrointestinal device through a gastrointestinal tract are provided. A gastrointestinal guidewire is positioned through the gastrointestinal tract, by introduction of an introducing element into the gastrointestinal tract. One end of the gastrointestinal guidewire is attached to the introducing element, and the other end of the gastrointestinal guidewire is attached to an anchoring element, anchored to a location outside of the gastrointestinal tract. Movement of the introducing element through the gastrointestinal tract results in positioning of the guidewire through the gastrointestinal tract. The guidewire is then used as a scaffold to guide the gastrointestinal device, wherein the gastrointestinal device may be externally controlled. This allows for speeding up, slowing down, reversal and stopping of the gastrointestinal device during its descent through the gastrointestinal tract.

Description

field of invention [0001] The present invention relates to systems and methods for guiding gastrointestinal devices through the gastrointestinal tract. A gastrointestinal guidewire is placed through the gastrointestinal tract and is configured to act as a scaffold for guiding gastrointestinal devices. Background of the invention [0002] Access to the lumen of the gastrointestinal tract is useful for diagnosis and treatment of various conditions such as inflammation, cancer and gastrointestinal bleeding. Imaging of the lumen can be accomplished with various flexible fiberoptic endoscopes introduced through the mouth (gastroscope or enteroscope) or anus (colonoscope). These procedures, especially colonoscopy and enteroscopies, require various manual actions by the operator, usually a physician, in order to advance the endoscope while avoiding its looping, making the insertion of the endoscope technically demanding . Furthermore, the patient discomfort and looping of the en...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61M29/00
CPCA61M25/01A61B1/041A61M2210/1067A61M25/0127A61M2210/1042A61B1/00156A61M25/09A61M2210/1064A61M2210/106
Inventor 舒姆隆·本-霍林
Owner TEL HASHOMER MEDICAL RES INFRASTRUCTURE & SERVICES
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