U.S. patents available from 1976 to present.
U.S. patent applications available from 2005 to present.

Insertion and removal catheters and intestinal tubes for restricting absorption

Patent 4315509 Issued on February 16, 1982. Estimated Expiration Date: Icon_subject February 16, 1999. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.

Patent References

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Inventor

Application

No. 05/951864 filed on 10/16/1978

US Classes:

606/108, Means for inserting or removing conduit within body417/474, Elongated flexible chamber wall progressively deformed604/28, Method604/516, To or from the intestines through nasal or esophagal conduit604/909, APPARATUS FOR THE TREATMENT OF OBESITY [A61F 5/00B]606/174, Shear type (e.g., scissors, etc.)623/66.1MISCELLANEOUS

Examiners

Primary: Michell, Robert W.
Assistant: Rose, Arthur S.

Attorney, Agent or Firm

International Classes

A61F 5/00 (20060101)
A61M 25/01 (20060101)
A61M 25/00 (20060101)

Abstract

A first part of the inventive instrument comprises an insertion and removal device in the form of a maneuverable catheter which may be inserted through the mouth or nostril, pharynx, and esophagus into the stomach. In one form, the catheter includes an outer sheath which protects the human body while a tool extending coaxially through an inner sheath is being manipulated. The tool includes a remotely operated pair of tweezers for holding or releasing a loop on insertion or seizing and holding the loop on removal of the second part of the inventive instrument. An alternate device for capturing and holding the second part of the inventive instrument uses an electromagnet. The second part of the inventive instrument comprises a self-compressing, open-ended, balloon-like tube for implantation in and lining of the digestive tract, especially in the intestine, to prevent food from being absorbed into the villi. The balloon-like tube expands outwardly when filled with food chemicals, enabling peristalsis to squeeze the food chyme through the tube. An alternate embodiment intermittently lines only desired areas of the alimentary canal. The tube may also be used to treat obesity or alcoholism, or to cover an ulcer and give it an opportunity to heal with minimum exposure to digesting food and gastric juices.

Other References

  • Carlson, Anton J. et al.; The Machinery of the Body; 5th Ed. .COPYRGT.1961, p. 330
  • Wallechinsky, David et al.; The People's Almanac; p. 1058
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