Fistula device and method for in-vivo evaluation of fish egg development
First Claim
1. A fistula device for use with piscine species to gather material from inside an exterior body wall of the species, said fistula device comprising:
- a body member including a flange at one end thereof adapted to engage an outside surface of the exterior body wall of the piscine species and further comprising a hollow cylindrical body portion including internal threading and external threading;
a retaining ring adapted to be placed against an interior surface of the exterior wall of the species, said ring including internal threading permitting the ring to be screwed onto the external threading of said body member;
a mesh member secured to the retaining ring and adapted to be sutured to the exterior wall of the species internally of the exterior wall; and
a removable plug member including a threaded portion adapted to be screwed into the hollow body portion of said body member.
1 Assignment
0 Petitions
Accused Products
Abstract
A fistula device is provided for use with fish to gather materials, e.g., eggs, from inside an exterior body wall of the fish. The fistula device includes a body member having a flange at one end thereof. The flange, in use, engages an outside surface of the exterior body wall of the fish to hold the device in place. The device also includes a hollow cylindrical body portion having both internal and external threading. A retaining ring is adapted to be placed against an interior surface of the exterior wall of the fish, and includes internal threading permitting the ring to be screwed onto the external threading of the body member. A knitted plastic mesh is secured to the retaining ring and adapted to be sutured to the inside of the exterior body wall of the fish. A removable plug used to close off the device includes a threaded portion adapted to be screwed into the body member.
142 Citations
11 Claims
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1. A fistula device for use with piscine species to gather material from inside an exterior body wall of the species, said fistula device comprising:
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a body member including a flange at one end thereof adapted to engage an outside surface of the exterior body wall of the piscine species and further comprising a hollow cylindrical body portion including internal threading and external threading;
a retaining ring adapted to be placed against an interior surface of the exterior wall of the species, said ring including internal threading permitting the ring to be screwed onto the external threading of said body member;
a mesh member secured to the retaining ring and adapted to be sutured to the exterior wall of the species internally of the exterior wall; and
a removable plug member including a threaded portion adapted to be screwed into the hollow body portion of said body member. - View Dependent Claims (2, 3, 4, 5, 6)
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7. A method of collecting materials from inside of a piscine species through a exterior body wall of the species, said method comprising:
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providing a fistula device comprising a hollow body member having a flange at one end thereof, a retaining ring having a mesh member affixed to the outer periphery thereof, and a closure plug;
placing the body member in a hole created by excision of skin and muscle tissue in a lateral or ventral aspect of the exterior body wall of the species, and positioning the flange of the body member against an exterior surface of the body wall of the species;
placing the retaining ring inside the species through a second incision in the body wall and securing the ring to the body member;
affixing the mesh member to an interior area of the body wall; and
inserting the closure plug into hollow body member to close off the body member. - View Dependent Claims (8, 9, 10, 11)
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Specification