Sutureless gastroesophageal anti-reflux valve prosthesis and tool for peroral implantation thereof
First Claim
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1. A sutureless, perorally insertable anti-reflux valve prosthesis, comprising:
- a cylindrical housing constructed of a memory material comprising a metal mesh;
a mounting ring fixed to the housing;
a one-way sleeve valve depending from the mounting ring within the cylindrical housing; and
a plurality of longitudinally aligned stays operatively associated with the sleeve and disposed within the cylindrical housing for inhibiting inversion of the sleeve.
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Abstract
Disclosed are an instrument, valve prosthesis and procedure for the minimally invasive implantation of a sutureless anti-reflux valve in a patient for the treatment of gastroesophageal reflux disease. A prosthesis is provided that comprises a cylindrical housing, a mounting ring and a one-way anti-reflux valve depending from the mounting ring. The cylindrical housing is constructed of a memory material that can be fixed in the gastroesophageal junction. The mounting ring and the anti-reflux valve are fixed within the housing.
417 Citations
25 Claims
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1. A sutureless, perorally insertable anti-reflux valve prosthesis, comprising:
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a cylindrical housing constructed of a memory material comprising a metal mesh;
a mounting ring fixed to the housing;
a one-way sleeve valve depending from the mounting ring within the cylindrical housing; and
a plurality of longitudinally aligned stays operatively associated with the sleeve and disposed within the cylindrical housing for inhibiting inversion of the sleeve. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
an overtube for holding the cylindrical housing in a radially compressed condition at a distal end of the overtube for peroral insertion down an esophageal lumen;
a stylet indwelling in the overtube in releasable operative engagement with the housing to eject the housing from the distal end of the overtube.
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10. The anti-reflux valve prosthesis of claim 9 further comprising a balloon at a distal end of the stylet in the cylindrical housing, wherein the balloon is in fluid communication with a central longitudinal passage in the stylet for introducing fluid into the balloon to facilitate expansion of the housing to its normal cross-section following ejection of the housing from the overtube, and for removing said fluid from the balloon to allow retraction of the balloon from the housing into the overtube.
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11. An anti-reflux valve prosthesis comprising:
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a cylindrical housing having an enlarged upper end, a lower end, and an interior defined by an interior wall, the cylindrical housing constructed of a memory material having a normal cross-section, such that when a force, applied to the housing to make the cross-section smaller, is removed, the housing returns to its normal cross-section or is expandable to its normal cross-section;
a mounting ring fixed to the wall of the upper end of the housing;
a one-way valve depending from the mounting ring within the interior of the cylindrical housing comprising a sleeve and a plurality of longitudinal stays associated therewith; and
an optional anti-inversion support having two ends, one end of which is fixed to a lower end of the one-way valve and the other end of which is fixed to the wall of the lower end of the cylindrical housing. - View Dependent Claims (12, 13, 14, 15, 16, 17, 18, 19)
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20. A method for implanting an anti-reflux valve prosthesis adjacent the esophageal Junction, comprising:
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perorally inserting an anti-reflux valve prosthesis in a radially compressed condition down a non-cancerous esophageal lumen, wherein the anti-reflux valve prosthesis comprises a cylindrical housing constructed of a memory material, a mounting ring fixed to the housing and a one-way valve depending from the mounting ring within the cylindrical housing;
positioning the compressed anti-reflux valve prosthesis near the esophageal junction;
expanding the anti-reflux valve prosthesis to normal cross-section to implant said prosthesis in the esophageal junction.- View Dependent Claims (21, 22, 23, 24)
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25. A sutureless, perorally insertable anti-reflux valve prosthesis, comprising:
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a cylindrical housing constructed of a memory material;
a mounting ring fixed to the housing;
a one-way valve depending from the mounting ring within the cylindrical housing; and
an anti-inversion support having two ends, one end of which is fixed to the one-way valve and the other end of which is fixed to a wall of a lower end of the cylindrical housing to prevent the valve from inverting.
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Specification