US4861334A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Self-retaining gastrostomy tube
Assignee: Individual
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Filing: 1988-06-24
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Granted: 1989-08-29
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Expires: 2008-06-24
Abstract
Abstract A gastrostomy tube which is retained in place without the use of any stitching. The tube is held in place through the use of a balloon inside the stomach and a collar pressing against the abdominal wall of the patient. The tube is provided with a stretchable section which is lengthened prior to insertion to provide the retention forces required. A trocar is employed to elongate and implant the gastrostomy tube. Also disclosed is a method of implanting a feeding tube.
Inventors
- 👤 Arain M. Nawaz
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 12:52
CPC Classifications
A; A61; A61J; A61J15/00; A61J15/0015; A61B; A61B17/00; A61B17/34; A61B17/3415; A61J15/0026; A61J15/003; A61J15/0034; A61J15/0038; A61J15/0042; A61J15/0053; A61J15/0065; A61J15/0061; A61M; A61M25/00; A61M25/01; A61M25/02; A61M2025/0213; A61M2025/0233
Claims Analysis
Total Claims: 18
Claim 1
Independent Claim
205 words
A self-retaining gastrostomy tube for implantation through the abdominal and stomach walls of a patient, the distal end of said tube to terminate within said stomach and the proximate end of said tube to terminate outside of said patient, comprising: a. collar means adjacent the proximate end of said tube for engaging the outer surface of the abdominal wall; b. inflatable means mounted on the outside of said tube located within said stomach upon implantation of said tube; c. said tube including a stretchable section located between said collar means and said inflatable means; d. trocar means for surgically implanting said tube and elongating said stretchable section during implantation, said stretchable section extending through said abdominal and stomach walls and being elongated and becoming taut during installation of said tube; and e. means for inflating said inflatable means after implantation of said tube to cause said inflatable means upon inflation to exert a force against the inside surface of said stomach wall transmitted to said collar means on the surface of said abdominal wall whereby said tube is held in place by said collar means and said inflatable means acting on said abdominal and stomach walls as a result of said stretchable section being taut.
Claim 2
Dependent Claim
205 words
A self-retaining gastrostomy tube for implantation through the abdominal and stomach walls of a patient, the distal end of said tube to terminate within said stomach and the proximate end of said tube to terminate outside of said patient, comprising: a. collar means adjacent the proximate end of said tube for engaging the outer surface of the abdominal wall; b. inflatable means mounted on the outside of said tube located within said stomach upon implantation of said tube; c. said tube including a stretchable section located between said collar means and said inflatable means; d. trocar means for surgically implanting said tube and elongating said stretchable section during implantation, said stretchable section extending through said abdominal and stomach walls and being elongated and becoming taut during installation of said tube; and e. means for inflating said inflatable means after implantation of said tube to cause said inflatable means upon inflation to exert a force against the inside surface of said stomach wall transmitted to said collar means on the surface of said abdominal wall whereby said tube is held in place by said collar means and said inflatable means acting on said abdominal and stomach walls as a result of said stretchable section being taut.
Claim 3
Dependent Claim
51 words
The gastrostomy tube of claim 1 in which said trocar means engages and elongates said stretchable section, implants said tube, and then disengages and is withdrawn from said tube after said tube is in place and said inflatable means is inflated leaving said stretchable section to retract and exert said force.
Claim 4
Dependent Claim
44 words
The gastrostomy tube of claim 1 wherein said inflating means includes port means adjacent the proximate end of said tube for receiving fluid under pressure and a passageway extending from said port means through said stretchable section to the interior of said inflatable means.
Claim 5
Dependent Claim
16 words
The gastrostomy tube of claim 3 wherein said inflatable means is a balloon surrounding said tube.
Claim 6
Dependent Claim
11 words
The gastrostomy tube of claim 4 wherein said fluid is air.
Claim 7
Dependent Claim
35 words
The gastrostomy tube of claim 4 wherein said port means includes check valve means to prevent deflation of said balloon and upon actuation to permit deflation of said balloon to permit removal of said tube.
Claim 8
Dependent Claim
25 words
The gastrostomy tube of claim 1 having spacer means between said collar means and said abdominal wall to insure adequate tension on said stretchable section.
Claim 9
Independent Claim
187 words
The method of implanting a tube having a stretchable section in a patient so that the distal end of said tube terminates within an organ of said patient and the proximate end of said tube remains outside of said organ comprising the steps of inserting a trocar through and engaging said tube to cause the elongation of said tube, said tube being surrounded by a balloon adjacent the distal end of said tube, having a collar adjacent the proximate end of said tube, said stretchable section located between said collar and said balloon, said trocar having a pointed end extending out of the distal end of said tube to direct the insertion of said tube, making a surgical incision where said tube is to enter said organ, inserting said trocar with said tube mounted thereon through said incision until said collar is adjacent the outer surface of said organ and elongating said stretchable section, inflating said balloon to press against the inner wall of said organ, and removing said trocar leaving said tube in place and self-retained as a result of said lengthened stretchable section being taut.
Claim 10
Independent Claim
187 words
The method of implanting a tube having a stretchable section in a patient so that the distal end of said tube terminates within an organ of said patient and the proximate end of said tube remains outside of said organ comprising the steps of inserting a trocar through and engaging said tube to cause the elongation of said tube, said tube being surrounded by a balloon adjacent the distal end of said tube, having a collar adjacent the proximate end of said tube, said stretchable section located between said collar and said balloon, said trocar having a pointed end extending out of the distal end of said tube to direct the insertion of said tube, making a surgical incision where said tube is to enter said organ, inserting said trocar with said tube mounted thereon through said incision until said collar is adjacent the outer surface of said organ and elongating said stretchable section, inflating said balloon to press against the inner wall of said organ, and removing said trocar leaving said tube in place and self-retained as a result of said lengthened stretchable section being taut.
Claim 11
Dependent Claim
31 words
The method of claim 8 wherein said tube is a gastrostomy tube being implanted through the abdominal and stomach walls of said patient for use in feeding nourishment to said patient.
Claim 12
Dependent Claim
164 words
A tube for surgical implantation through one or more organs of a patient, the distal end of said tube terminating within said organ and the proximate end of said tube terminating outside of said organ, comprising: a. collar means adjacent the proximate end of said tube for engaging the outer surface of said organ; b. inflatable means mounted on the outside of said tube located within said organ upon implantation of said tube; c. said tube including a stretchable section of elastic material located between said collar means and said inflatable means; d. implanting means for lengthening said stretchable section and implanting said tube; e. means for inflating said inflatable means after implantation of said tube to cause said inflatable means to exert a force against the inside of said organ transmitted to said collar means on the outside of said organ upon release of said implanting means resulting in said tube being held in place by said collar means and said inflatable means.
Claim 13
Dependent Claim
164 words
A tube for surgical implantation through one or more organs of a patient, the distal end of said tube terminating within said organ and the proximate end of said tube terminating outside of said organ, comprising: a. collar means adjacent the proximate end of said tube for engaging the outer surface of said organ; b. inflatable means mounted on the outside of said tube located within said organ upon implantation of said tube; c. said tube including a stretchable section of elastic material located between said collar means and said inflatable means; d. implanting means for lengthening said stretchable section and implanting said tube; e. means for inflating said inflatable means after implantation of said tube to cause said inflatable means to exert a force against the inside of said organ transmitted to said collar means on the outside of said organ upon release of said implanting means resulting in said tube being held in place by said collar means and said inflatable means.
Claim 14
Dependent Claim
21 words
The tube of claim 10 in which said implanting means is a trocar to engage said tube for implanting said tube.
Claim 15
Dependent Claim
12 words
The tube of claim 10 wherein said inflatable means is a balloon.
Claim 16
Dependent Claim
41 words
The tube of claim 12 wherein said inflating means comprises port means on said collar means for receiving fluid under pressure and passageway means in said tube communicating with said port means and said balloon for delivering said fluid under pressure.
Claim 17
Dependent Claim
33 words
The tube of claim 13 having check valve means in said port means for maintaining said balloon inflated and permitting upon actuation the deflation of said balloon in order to remove said tube.
Claim 18
Dependent Claim
23 words
The tube of claim 10 having spacer means between said collar means and said organ to insure adequate tension on said stretchable section.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1992-08-28 | 1993-02-27 | 1993-08-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1996-08-28 | 1997-02-27 | 1997-08-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2000-08-28 | 2001-02-27 | 2001-08-29 | $7700.00 | Window Closed / Lapsed |