Gastrostomy feeding ports

• US 5,720,734 A
• Filed: 08/22/1996
• Issued: 02/24/1998
• Est. Priority Date: 02/28/1994
• Status: Expired due to Term

• Current Assignee: Cook Medical Incorporated (Cook Group Incorporated)
• Original Assignee: Wilson-Cook Medical Incorporated (Cook Group Incorporated)
• Inventors: DeLegge, Mark, Copenhaver, Rebecca, Russo, Ronald D.
• Primary Examiner(s): Buiz, Michael Powell
• Assistant Examiner(s): GRING, NOELLE K
• Application Number:
  US08/701,430
• Time in Patent Office: 551 Days
• Field of Search: 604/247, 604/96, 604/27, 604/48, 604/277, 604/332, 604/256, 604/175
• US Class Current: 604/247
• CPC Class Codes: A61J 15/0015 Gastrostomy feeding-tubes insertion tools or methods A61B17/34
• CPC Class Codes: A61J 15/0038 expandable, e.g. umbrella type
• CPC Class Codes: A61J 15/0065 Fixing means and tube being one part
• CPC Class Codes: A61J 15/0092 Valves on feeding tubes tube valves A61M39/22

Abstract

Gastrostomy ports are disclosed for reliably providing enteral feeding to a patient over long periods of time. Gastrostomy ports shown herein provide one-way valves which include a resilient valve member which is compressively fitted within a receiving cavity defined by a rigid compression collar. The valve member has a diaphragm portion defining a slit. The compression collar presses inwardly against the outer peripheral edge of the diaphragm portion to apply laterally compressive forces which bias the slit toward a normally closed position. Gastrostomy ports are further shown for accessing the interior of a body cavity or organ which are self retaining and resist inadvertent pull-out but can be atraumatically implanted and removed. The devices include a retaining element which is resiliently deformable between a normally enlarged state for retention and a collapsed state for insertion and removal through a stoma and are provided with means for controllably biasing the element toward a longitudinal axis for collapsing the element. Still additional embodiments are disclosed which provide for the direct conversion of an implanted PEG tube into a low profile feeding port, and which further provide for the direct secure connection to an enteral feeding tube adapter.

Claims

1. A device for insertion into a stoma through a wall of a body cavity of a patient for transport of materials from the exterior of the patient to the interior of the body cavity, comprising:

a port head defining a passageway having a first end and a second end and an entrance in communication with said first end of said passageway for receiving a delivery device;

a hollow tubular stem portion having an inner end and an outer end attached to said port head, said stem portion defining a lumen in communication with said second end of said passageway, said stem portion sized to extend through the stoma with said port head disposed on the exterior of the patient;

a retaining element having an open first end attached to said inner end of said stem portion and a closed second end, said element defining a substantially enclosed cavity in communication with said lumen and a hole in communication with said cavity for delivering materials to the interior of the body cavity, said element having an interior surface defining a tool engaging surface at said second end of said element for engaging an insertion tool;

said element being resiliently deformable between a normally enlarged state for retention and a collapsed state for insertion and removal through the stoma, said element having a support portion at said first end of said element configured for contacting the internal surface of the body cavity to retain said element within the body cavity when said stem portion is inserted through the stoma and said element is in its normally enlarged state; and

said interior surface of said element defining a first groove substantially parallel to a longitudinal axis defined by said cavity, said first groove configured to controllably bias the folding and collapse of said retaining element toward said longitudinal axis when the insertion tool is pressing against said tool engaging surface for atraumatic passage through the stoma.

2. The device of claim 1 wherein said internal surface further defines a number of grooves parallel to said longitudinal axis and in spaced relation to said first groove.

3. The device of claim 1 wherein said element includes a conical tip opposite said support portion and said hole is defined in said conical tip.

4. The device of claim 3 wherein said element includes a shoulder portion defining said support portion, an annular wall portion and a bend between said support portion and said annular wall portion, said shoulder portion defining said grooves, each said groove extending through said bend.

5. The device of claim 1 wherein said element includes a semi-spherical tip opposite said support portion and said hole is defined in said tip.

6. The device of claim 1 wherein said port head, said stem portion and said annular wall are integrally molded and said tip is attachable to said annular wall portion.

7. The device of claim 1 wherein said element is dome shaped when said element is in the enlarged state.

8. The device of claim 1 wherein said support portion is planar when said element is in the enlarged state.

9. The device of claim 8 wherein said support position, said bend and said annular wall form an angle when said element is in the enlarged state, said angle being about 90 degrees.

10. The device of claim 1 wherein said support portion is concave when said element is in the enlarged state.

11. The device of claim 1 wherein said hole is oval having a major axis, said major axis substantially parallel to said longitudinal axis.

12. The device of claim 1, wherein:

said entrance has a first diameter which allows a first distal portion of the delivery device to pass through into said passageway and which is sized to sealingly engage a larger second portion of the delivery device, said port head further defining a tube opening in communication with said second end of said passageway, said tube opening having a second diameter configured to sealingly engage the first portion of the delivery device.

13. The device of claim 1, wherein:

said port head further includes a one-way entrance valve including;

a rigid compression collar portion which defines a valve member receiving cavity;

a resilient valve member, said resilient valve member including a diaphragm portion and an outer wall portion, said diaphragm portion defining a slit therethrough and having an outer peripheral edge which generally conforms in shape to said valve member receiving cavity but is larger in dimension than said cavity when said resilient valve member is uncompressed, said outer wall portion extending away from said outer peripheral edge and generally conforming in shape to said cavity; and

wherein said resilient valve member is compressively fitted within said valve member receiving cavity by advancing said outer wall portion into said cavity to thereby cause said outer peripheral edge to be compressed in dimension to fit within said cavity, with said compression collar portion of said valve housing pressing inwardly against said outer peripheral edge of said diaphragm portion to apply laterally compressive forces against said diaphragm portion and to thereby bias said slit toward a normally closed position.