WO2004017863A2 - Endoscopic gastric bypass - Google Patents
Endoscopic gastric bypass Download PDFInfo
- Publication number
- WO2004017863A2 WO2004017863A2 PCT/US2003/026830 US0326830W WO2004017863A2 WO 2004017863 A2 WO2004017863 A2 WO 2004017863A2 US 0326830 W US0326830 W US 0326830W WO 2004017863 A2 WO2004017863 A2 WO 2004017863A2
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- stent
- bypass
- patient
- ingested food
- gastric
- Prior art date
Links
Classifications
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F5/00—Orthopaedic methods or devices for non-surgical treatment of bones or joints; Nursing devices; Anti-rape devices
- A61F5/0003—Apparatus for the treatment of obesity; Anti-eating devices
- A61F5/0013—Implantable devices or invasive measures
- A61F5/0076—Implantable devices or invasive measures preventing normal digestion, e.g. Bariatric or gastric sleeves
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
- A61F2/02—Prostheses implantable into the body
- A61F2/04—Hollow or tubular parts of organs, e.g. bladders, tracheae, bronchi or bile ducts
- A61F2/06—Blood vessels
- A61F2/07—Stent-grafts
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
- A61F2/02—Prostheses implantable into the body
- A61F2/24—Heart valves ; Vascular valves, e.g. venous valves; Heart implants, e.g. passive devices for improving the function of the native valve or the heart muscle; Transmyocardial revascularisation [TMR] devices; Valves implantable in the body
- A61F2/2412—Heart valves ; Vascular valves, e.g. venous valves; Heart implants, e.g. passive devices for improving the function of the native valve or the heart muscle; Transmyocardial revascularisation [TMR] devices; Valves implantable in the body with soft flexible valve members, e.g. tissue valves shaped like natural valves
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
- A61F2/82—Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
- A61F2/86—Stents in a form characterised by the wire-like elements; Stents in the form characterised by a net-like or mesh-like structure
- A61F2/89—Stents in a form characterised by the wire-like elements; Stents in the form characterised by a net-like or mesh-like structure the wire-like elements comprising two or more adjacent rings flexibly connected by separate members
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
- A61F2/02—Prostheses implantable into the body
- A61F2/04—Hollow or tubular parts of organs, e.g. bladders, tracheae, bronchi or bile ducts
- A61F2002/044—Oesophagi or esophagi or gullets
Definitions
- a device is inserted into a patient's stomach endoscopically to separate ingested food from gastric fluids and, optionally, to separate ingested food in the duodenum from digestive enzymes.
- a stent is inserted into a patient's gastrointestinal tract to bypass the stomach.
- the stent comprises a covered stent having one-way openings and/or valves on its annular surface and preferably at least one one-way valve at one end to permit entry of food and/or liquids.
- the one-way valve at the end of the stent can comprise a sleeve that extends through the stent, preferably into the duodenum or beyond.
- One end of the stent is intended to be positioned at or above the gastro- esophageal junction, and the other end is intended to be positioned in the duodenum or beyond.
- the net effect of endoscopic gastric bypass is to replicate some or all of the effects of a surgical gastric bypass.
- the stent is advantageously delivered on a balloon dilatation catheter having one or more dilatable balloons.
- the distal and proximal portions of the stent are attached or crimped to corresponding portions of the catheter, and then, when the stent is properly positioned, balloons are dilated to expand the stent portions.
- Self-expanding stents with appropriate catheter-based delivery systems, could be used as well.
- the stent can be removed by use of one or more of known methods or devices.
- FIG. 1 is a partly cross- sectional view of an embodiment of the invention
- FIG. 2 is a partly cross-sectional view of another embodiment of the invention.
- FIG. 3 is a cross-sectional view of an embodiment of the invention on a delivery catheter.
- Fig. 4 is a partly cross-sectional view of an embodiment of the invention in position in a patient.
- a gastric bypass stent 2 comprises a stent member 4 at the proximal end 6 of a tubular member 8 and, optionally, a stent member 10 at the distal end 12 of tubular member 8.
- Proximal tubular end 6 comprises a one-way valve member 16 to permit passage of food and liquid
- the wall 18 of tubular member 8 comprises one-way openings or valves 20 to permit gastric acid or fluid to flow into stent 2.
- stent 2 could comprise one or more stent members 4, 10 that would together define a lumen and would have a coating or surface that would be the functional equivalent of tubular member 8.
- valve member 16 may optionally extend to or through tubular member distal end 12, whereby food from a patient's esophagus (not shown), i.e., ingested food, would not be contacted by gastric acid or fluid within stent 2 or by digestive enzymes within the duodenum (not shown). If it were desired to have some food contact some gastric acid or fluid or digestive enzymes within a distally extending valve member distal portion 14, valve member distal portion 14 could have some one-way valves 22, dependent upon the amount of contact desired. It is within the scope of the invention that valve member distal portion 14 could extend as far as up to about 75% of the small bowel, preferably from about 25 to about 250 cm into the duodenum or beyond.
- one-way valves 20 could be in fluid connection with tubes 24 that would extend distally to a point substantially near or distal to distal end 12.
- stent of the invention e.g., the length of valve member 16, the number and position of oneway valves 20 and 22, and the use of tubing 24 connected to valves 20, can be varied to achieve a desired result in terms of when ingested food is contacted by gastric fluid and to what extent.
- the outer surface of each of proximal end 6 and distal end 12 may comprise a sealable member, such as an inflatable cuff in fluid communication with an inflation device.
- Fig. 3 is a cross-sectional view of a stent 26 on a delivery catheter 28.
- Catheter 28 comprises annular dilatation balloons 30 and 32 to expand stent members 34 and 36 once stent 26 is in position within a patient.
- Balloons 30 and 32 are inflated either sequentially or simultaneously through inflation lumens 38 and 40 to cause stent members 32 to expand to hold stent 26 in the desired position. Then, balloons 30 and 32 are deflated and catheter 28 is withdrawn.
- a stent 40 is shown in position, extending from a patient's gastro-esophageal junction 42 to the patient's duodenum 44.
- Gastric juices generated in the lining 48 of the stomach 50 flow in the direction of arrows 52 through one-way valves 54 into stent 40 and then into duodenum 44.
- Food or liquids from the esophagus 60 move in direction of arrow 62 through one-way valve 64 into stent 40 and then into duodenum 44, without direct contact with stomach 46.
Abstract
Description
Claims
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
AU2003265783A AU2003265783A1 (en) | 2002-08-26 | 2003-08-26 | Endoscopic gastric bypass |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US10/229,400 | 2002-08-26 | ||
US10/229,400 US7211114B2 (en) | 2002-08-26 | 2002-08-26 | Endoscopic gastric bypass |
Publications (2)
Publication Number | Publication Date |
---|---|
WO2004017863A2 true WO2004017863A2 (en) | 2004-03-04 |
WO2004017863A3 WO2004017863A3 (en) | 2004-04-22 |
Family
ID=31887659
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/US2003/026830 WO2004017863A2 (en) | 2002-08-26 | 2003-08-26 | Endoscopic gastric bypass |
Country Status (3)
Country | Link |
---|---|
US (2) | US7211114B2 (en) |
AU (1) | AU2003265783A1 (en) |
WO (1) | WO2004017863A2 (en) |
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Also Published As
Publication number | Publication date |
---|---|
WO2004017863A3 (en) | 2004-04-22 |
AU2003265783A1 (en) | 2004-03-11 |
US7211114B2 (en) | 2007-05-01 |
US7837645B2 (en) | 2010-11-23 |
US20080033574A1 (en) | 2008-02-07 |
US20040039452A1 (en) | 2004-02-26 |
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