CA2171938C - Flexible retainer flange for gastrostomy tube - Google Patents
Flexible retainer flange for gastrostomy tubeInfo
- Publication number
- CA2171938C CA2171938C CA002171938A CA2171938A CA2171938C CA 2171938 C CA2171938 C CA 2171938C CA 002171938 A CA002171938 A CA 002171938A CA 2171938 A CA2171938 A CA 2171938A CA 2171938 C CA2171938 C CA 2171938C
- Authority
- CA
- Canada
- Prior art keywords
- dome
- patient
- flange means
- catheter
- gastrostomy
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Classifications
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61J—CONTAINERS SPECIALLY ADAPTED FOR MEDICAL OR PHARMACEUTICAL PURPOSES; DEVICES OR METHODS SPECIALLY ADAPTED FOR BRINGING PHARMACEUTICAL PRODUCTS INTO PARTICULAR PHYSICAL OR ADMINISTERING FORMS; DEVICES FOR ADMINISTERING FOOD OR MEDICINES ORALLY; BABY COMFORTERS; DEVICES FOR RECEIVING SPITTLE
- A61J15/00—Feeding-tubes for therapeutic purposes
- A61J15/0015—Gastrostomy feeding-tubes
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61J—CONTAINERS SPECIALLY ADAPTED FOR MEDICAL OR PHARMACEUTICAL PURPOSES; DEVICES OR METHODS SPECIALLY ADAPTED FOR BRINGING PHARMACEUTICAL PRODUCTS INTO PARTICULAR PHYSICAL OR ADMINISTERING FORMS; DEVICES FOR ADMINISTERING FOOD OR MEDICINES ORALLY; BABY COMFORTERS; DEVICES FOR RECEIVING SPITTLE
- A61J15/00—Feeding-tubes for therapeutic purposes
- A61J15/0026—Parts, details or accessories for feeding-tubes
- A61J15/003—Means for fixing the tube inside the body, e.g. balloons, retaining means
- A61J15/0034—Retainers adjacent to a body opening to prevent that the tube slips through, e.g. bolsters
- A61J15/0038—Retainers adjacent to a body opening to prevent that the tube slips through, e.g. bolsters expandable, e.g. umbrella type
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61J—CONTAINERS SPECIALLY ADAPTED FOR MEDICAL OR PHARMACEUTICAL PURPOSES; DEVICES OR METHODS SPECIALLY ADAPTED FOR BRINGING PHARMACEUTICAL PRODUCTS INTO PARTICULAR PHYSICAL OR ADMINISTERING FORMS; DEVICES FOR ADMINISTERING FOOD OR MEDICINES ORALLY; BABY COMFORTERS; DEVICES FOR RECEIVING SPITTLE
- A61J15/00—Feeding-tubes for therapeutic purposes
- A61J15/0015—Gastrostomy feeding-tubes
- A61J15/0023—Gastrostomy feeding-tubes inserted by using a sheath
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61J—CONTAINERS SPECIALLY ADAPTED FOR MEDICAL OR PHARMACEUTICAL PURPOSES; DEVICES OR METHODS SPECIALLY ADAPTED FOR BRINGING PHARMACEUTICAL PRODUCTS INTO PARTICULAR PHYSICAL OR ADMINISTERING FORMS; DEVICES FOR ADMINISTERING FOOD OR MEDICINES ORALLY; BABY COMFORTERS; DEVICES FOR RECEIVING SPITTLE
- A61J15/00—Feeding-tubes for therapeutic purposes
- A61J15/0026—Parts, details or accessories for feeding-tubes
- A61J15/0053—Means for fixing the tube outside of the body, e.g. by a special shape, by fixing it to the skin
- A61J15/0061—Means for fixing the tube outside of the body, e.g. by a special shape, by fixing it to the skin fixing at an intermediate position on the tube, i.e. tube protruding the fixing means
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M25/00—Catheters; Hollow probes
- A61M25/01—Introducing, guiding, advancing, emplacing or holding catheters
- A61M25/02—Holding devices, e.g. on the body
- A61M2025/0213—Holding devices, e.g. on the body where the catheter is attached by means specifically adapted to a part of the human body
- A61M2025/0233—Holding devices, e.g. on the body where the catheter is attached by means specifically adapted to a part of the human body specifically adapted for attaching to a body wall by means which are on both sides of the wall, e.g. for attaching to an abdominal wall
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10S128/00—Surgery
- Y10S128/26—Cannula supporters
Abstract
A gastrostomy tube (11) having a collapsible, internal retention flange (12) is disclosed, and the gastrostomy tube (11) is inserted into a patient's stomach by a percutaneous endoscopic or other suitable technique. The internal retention flange (12) comprises a dome shape that will not only reduce patient risk during the placement procedure, but will also allow for a more consistent and less traumatic external removal procedure.
Description
~WO 95/18640 Zr'LEXIBLE RETAINER FLANGE
BACKGROUND OF THE INVENTION
This invention relates to a new and improved gastrostomy device with a flexible, collapsible internal retention dome. This retention dome improves the ease of insertion by collapsing down in size as the gastrostomy device is pulled down the esophagus of a patient during a placement procedure. The collapsibility of the retention dome also reduces the risk of tissue and stoma damage, and reduces patient trauma during a subsequent external traction removal procedure.
Various types of gastrostomy devices have been installed in patients by means of a percutaneous insertion, a surgical placement, a radiological placement or others.
The procedures employed generally follow those known as the Sachs-Vine procedure, the Gauderer and Ponsky procedure, and others. Typical patents describing these procedures and publications of the technique are set forth in U.S.
Patents 4,861,334; 4,900,306; and 5,080,650.
Once installed, these devices are retained in place by an internal retention member. Varios types of these internal retention members currently exist, one type being a molded or permanently attached flange element, and another type being a collar and balloon.
Removal of gastrostomy devices are needed upon conclusion of enteral nutrition of a patient, or if the device were to be replaced with another enteral feeding device (e. g. an inflatable, replaceable gastrostomy tube), and various techniques are currently used for this removal " procedure. These techniques include 1, cutting the gastrostomy tube at skin level and retrieving the bumper endosco icall 2. cuttin the p y: g gastrostomy tube at skin level and allowing the flange or collar to pass through the gastro-intestinal tract and be expelled by excretion; or, 3. physically pulling the internal retention device through the patient's stoma. , There are problems associated with all three of the above prior art removal techniques. For example, the , endoscopic retrieval process places the patient at high risk during the procedure. Some of the risks involved are esophageal tissue damage and possible blockage of the trachea by the flange or collar upon retraction which could result in death.
Another risk occurs in allowing the flange or collar to pass through the gastrointestinal tract which may cause intestinal or bowel blockage.
Still another risk arises when these prior art devices are removed from a patient by means of external traction techniques, since they have been known to cause considerable trauma and excessive bleeding to patients.
Consequently, the device of the present invention is ZO designed for placement by either of the aforementioned percutaneous endoscopic or other types of procedures, and improves upon prior art devices during placement of the device and also during the external traction removal procedure.
THE INVENTION:
According to the invention, a gastrostomy device is disclosed which may be inserted into a patient by a percutaneous endoscopic, radiological, surgical, or other type of procedure. The device comprises a catheter tube, a proximal portion of which is used as a means for insertion, and a distal internal retention flange.
The internal retention flange includes a dome which is designed to collapse down significantly in diameter when a force is longitudinally applied along the axis of the F
~_ WO 95/18640 ~ PCT/US94/00205 catheter tube. The collapsing aspect of this dome allows for easier passage during placement of the device.
In normal catheter operation, the shape of the dome enables it to conform to the contour of the patient's stomach and provide a comfortable and secure internal retention means. When the gastrostomy device is no longer needed by the patient, or when replacement and substitution is required by another enteral feeding device, the collapsing dome of the retainer facilitates the external traction removal procedure.
The shape and configuration of the dome, as described herein, enables the dome to plicate when a force is applied longitudinally along the axis of the catheter tube.
~5 The predictable manner in which this dome buckles under a reduced amount of force is directly related to the varying thicknesses that are designed into the dome. The buckling or collapsing effect, and the compact shape which the dome assumes during removal of the gastrostomy tube, 20 can alleviate much of the pain and trauma associated with this procedure.
~N THE DRAWINGS' FIG. 1 is an external, perspective view of the 25 gastrostomy device of this invention;
FIG. 2 is a bottom plan view of FIG. 1 showing the underside of the flange element;
FIG. 3 is a sectional view in side elevation taken along lines 3 - 3 of FIG. 1;
30 FIG. 4 is an external view in side elevation and partly in perspective showing the gastrostomy tube of this invention following installation into a patient;
FIG. 5 is an external view in side elevation, partly in perspective, showing the gastrostomy tube of this 35 invention as it is being withdrawn from a patient;
BACKGROUND OF THE INVENTION
This invention relates to a new and improved gastrostomy device with a flexible, collapsible internal retention dome. This retention dome improves the ease of insertion by collapsing down in size as the gastrostomy device is pulled down the esophagus of a patient during a placement procedure. The collapsibility of the retention dome also reduces the risk of tissue and stoma damage, and reduces patient trauma during a subsequent external traction removal procedure.
Various types of gastrostomy devices have been installed in patients by means of a percutaneous insertion, a surgical placement, a radiological placement or others.
The procedures employed generally follow those known as the Sachs-Vine procedure, the Gauderer and Ponsky procedure, and others. Typical patents describing these procedures and publications of the technique are set forth in U.S.
Patents 4,861,334; 4,900,306; and 5,080,650.
Once installed, these devices are retained in place by an internal retention member. Varios types of these internal retention members currently exist, one type being a molded or permanently attached flange element, and another type being a collar and balloon.
Removal of gastrostomy devices are needed upon conclusion of enteral nutrition of a patient, or if the device were to be replaced with another enteral feeding device (e. g. an inflatable, replaceable gastrostomy tube), and various techniques are currently used for this removal " procedure. These techniques include 1, cutting the gastrostomy tube at skin level and retrieving the bumper endosco icall 2. cuttin the p y: g gastrostomy tube at skin level and allowing the flange or collar to pass through the gastro-intestinal tract and be expelled by excretion; or, 3. physically pulling the internal retention device through the patient's stoma. , There are problems associated with all three of the above prior art removal techniques. For example, the , endoscopic retrieval process places the patient at high risk during the procedure. Some of the risks involved are esophageal tissue damage and possible blockage of the trachea by the flange or collar upon retraction which could result in death.
Another risk occurs in allowing the flange or collar to pass through the gastrointestinal tract which may cause intestinal or bowel blockage.
Still another risk arises when these prior art devices are removed from a patient by means of external traction techniques, since they have been known to cause considerable trauma and excessive bleeding to patients.
Consequently, the device of the present invention is ZO designed for placement by either of the aforementioned percutaneous endoscopic or other types of procedures, and improves upon prior art devices during placement of the device and also during the external traction removal procedure.
THE INVENTION:
According to the invention, a gastrostomy device is disclosed which may be inserted into a patient by a percutaneous endoscopic, radiological, surgical, or other type of procedure. The device comprises a catheter tube, a proximal portion of which is used as a means for insertion, and a distal internal retention flange.
The internal retention flange includes a dome which is designed to collapse down significantly in diameter when a force is longitudinally applied along the axis of the F
~_ WO 95/18640 ~ PCT/US94/00205 catheter tube. The collapsing aspect of this dome allows for easier passage during placement of the device.
In normal catheter operation, the shape of the dome enables it to conform to the contour of the patient's stomach and provide a comfortable and secure internal retention means. When the gastrostomy device is no longer needed by the patient, or when replacement and substitution is required by another enteral feeding device, the collapsing dome of the retainer facilitates the external traction removal procedure.
The shape and configuration of the dome, as described herein, enables the dome to plicate when a force is applied longitudinally along the axis of the catheter tube.
~5 The predictable manner in which this dome buckles under a reduced amount of force is directly related to the varying thicknesses that are designed into the dome. The buckling or collapsing effect, and the compact shape which the dome assumes during removal of the gastrostomy tube, 20 can alleviate much of the pain and trauma associated with this procedure.
~N THE DRAWINGS' FIG. 1 is an external, perspective view of the 25 gastrostomy device of this invention;
FIG. 2 is a bottom plan view of FIG. 1 showing the underside of the flange element;
FIG. 3 is a sectional view in side elevation taken along lines 3 - 3 of FIG. 1;
30 FIG. 4 is an external view in side elevation and partly in perspective showing the gastrostomy tube of this invention following installation into a patient;
FIG. 5 is an external view in side elevation, partly in perspective, showing the gastrostomy tube of this 35 invention as it is being withdrawn from a patient;
2 ~.'~ ~. ~ 3 &
FIG. 6 is an external view in side elevation showing indicia markings on the exterior of the catheter; and, FIG. 7 is an external view, partly in perspective of another embodiment of this invention.
DESCRIPTION OF THE PREFERRED EMBODIMENTS:
The gastrostomy device 10 of this invention is shown in FIG. 1, and comprises a hollow elongate catheter 0 tube 11, through which a patient is fed, and an attached flange 12 at the distal end. The flange may be attached to the catheter tube by heat sealing, adhesives, sonic bonding, etc., or the flange 12 may be integrally formed with the catheter.
~5 The flange and catheter components are constructed of a biocompatible polymer such as a silicone elastomer, silicone copolymer, polyurethane, etc. Either of these two components may incorporate a white filler, or may omit a filler and be relatively clear. Also, a radiopaque 20 material such as BaS04 may be incorporated into the distal end of the catheter. As shown in FIG. 6, spacing indicia are provided to enable location of the device during installation, and during use.
Typically, the catheter has a durometer hardness of 25 about 40 - 60, with an outside diameter of about 14 - 20 French, an inside diameter of about 155 - 175 mils, and a wall thickness of about 40 - 60 mils.
A dilating sheath of polyethylene, or ABS (not shown) is attached to the end of the catheter to enable 30 manipulation of the device during installation.
Alternatively, a wire loop (not shown) may be used with a dilating tip, and the wire is typically made of a medical grade stainless steel and coated with a biocompatible material such as a polyurethane.
35 Due to its plastic memory, in its usual or unconstrained form, the flange 12 comprises an approximately hemispherically shaped dome 13. The dome is about 20 - 35 mils thick and is reinforced with a cut-out 14 about 20 - 25 mils thick and positioned on the inside of the dome. The cut-out 14 has a cruciform shape which defines four elements 15 spaced equally around the interior of the hemisphere dome. The central area 16 of the cut-out is continuous, and the dome reinforcement in this central area is~ about 40-60 mils thick. The cut-out 14 may be formed integrally while being insert molded, or it may be formed separately and then attached t-, the dome by heat or adhesive sealing, sonic bonding, etc.
It will be appreciated that the cruciform shape of the cut-out 14 is not critical, and the cut-out may assume 15 various shapes, such as elliptical, rectangular, triangular, asterism, striated, etc., provided it enables collapse of the hemisphere dome from the periphery to the central area 16 during removal of the gastrostomy device. -As shown in FIGS. 5 & 6, a portion lla of the catheter 20 extends beyond the patient and will engage a closure. member (not shown) , which when opened, connects to a feeding port;
this type of arrangement is well known in the art.
If desired, the external portion of the catheter can be formed into a feeding port which functions along with a 25 gasket to produce a sliding friction fit and thereby accommodate for peristaltic forces and other stomach movements. U.S. Patents 4,666,433; 4,685,901; 4,701,163;
and, 4,798,592 show this arrangement. This embodiment shown in Fig. 7 provides a catheter 20 attached at one 30 end to a dome element 21 of this invention, and includes a feeding port 22 mounted at the opposite end of the catheter. A closure plug 23 attached to a connector 24 fits into the feeding port when the device is not in use.
A gasket 25 provides a sliding friction fit along the 35 catheter and moves outwardly along the catheter in response to peristaltic forces, stomach movements, etc., and to prevent the device from being drawn into the patient s stomach. Gasket 25 has a plurality of legs 26 which rest against the user's body, and along with a plurality of air vent bores 27, permit better air circulation and reduce the presence of moisture.
Generally speaking a size differential of about 10 -20 mils between the outside diameter of the catheter and the insider diameterlof' the gasket bore is employed to produce a sliding friction fit between the gasket and catheter.
FIGS. 4 and 5 illustrate the gastrostomy tube 10 when installed through a stoma 16 of a patient as shown in ~5 FIG. 4, and during commencement of its removal, shown in FIG. 5. When installed, as shown in FIG. 4, the gastrostomy tube permits feeding through the catheter 11, while being retained within the stomach of the patient by means of the flange 12. The retention characteristics of 20 the present gastrostomy tube in the patient are quite adequate. When the gastrostomy tube 10 is retracted, usually for replacement purposes, the flange commences to collapse 17 as the retraction begins, and this initial collapse can be felt by the health care worker, physician, 25 etc., who perform the procedure. Hence, following this initial collapse, less subsequent force compared to prior art devices, is required to pull the gastrostomy device from the patient's body.
Removal of these prior art devices from the patient 30 frequently results in trauma, and often requires the use of masks and/or other coverings by medical workers when performing this procedure. The gastrostomy device of the present invention is less painful and traumatic to the patient during its removal, and is less troublesome to 35 health care workers.
FIG. 6 is an external view in side elevation showing indicia markings on the exterior of the catheter; and, FIG. 7 is an external view, partly in perspective of another embodiment of this invention.
DESCRIPTION OF THE PREFERRED EMBODIMENTS:
The gastrostomy device 10 of this invention is shown in FIG. 1, and comprises a hollow elongate catheter 0 tube 11, through which a patient is fed, and an attached flange 12 at the distal end. The flange may be attached to the catheter tube by heat sealing, adhesives, sonic bonding, etc., or the flange 12 may be integrally formed with the catheter.
~5 The flange and catheter components are constructed of a biocompatible polymer such as a silicone elastomer, silicone copolymer, polyurethane, etc. Either of these two components may incorporate a white filler, or may omit a filler and be relatively clear. Also, a radiopaque 20 material such as BaS04 may be incorporated into the distal end of the catheter. As shown in FIG. 6, spacing indicia are provided to enable location of the device during installation, and during use.
Typically, the catheter has a durometer hardness of 25 about 40 - 60, with an outside diameter of about 14 - 20 French, an inside diameter of about 155 - 175 mils, and a wall thickness of about 40 - 60 mils.
A dilating sheath of polyethylene, or ABS (not shown) is attached to the end of the catheter to enable 30 manipulation of the device during installation.
Alternatively, a wire loop (not shown) may be used with a dilating tip, and the wire is typically made of a medical grade stainless steel and coated with a biocompatible material such as a polyurethane.
35 Due to its plastic memory, in its usual or unconstrained form, the flange 12 comprises an approximately hemispherically shaped dome 13. The dome is about 20 - 35 mils thick and is reinforced with a cut-out 14 about 20 - 25 mils thick and positioned on the inside of the dome. The cut-out 14 has a cruciform shape which defines four elements 15 spaced equally around the interior of the hemisphere dome. The central area 16 of the cut-out is continuous, and the dome reinforcement in this central area is~ about 40-60 mils thick. The cut-out 14 may be formed integrally while being insert molded, or it may be formed separately and then attached t-, the dome by heat or adhesive sealing, sonic bonding, etc.
It will be appreciated that the cruciform shape of the cut-out 14 is not critical, and the cut-out may assume 15 various shapes, such as elliptical, rectangular, triangular, asterism, striated, etc., provided it enables collapse of the hemisphere dome from the periphery to the central area 16 during removal of the gastrostomy device. -As shown in FIGS. 5 & 6, a portion lla of the catheter 20 extends beyond the patient and will engage a closure. member (not shown) , which when opened, connects to a feeding port;
this type of arrangement is well known in the art.
If desired, the external portion of the catheter can be formed into a feeding port which functions along with a 25 gasket to produce a sliding friction fit and thereby accommodate for peristaltic forces and other stomach movements. U.S. Patents 4,666,433; 4,685,901; 4,701,163;
and, 4,798,592 show this arrangement. This embodiment shown in Fig. 7 provides a catheter 20 attached at one 30 end to a dome element 21 of this invention, and includes a feeding port 22 mounted at the opposite end of the catheter. A closure plug 23 attached to a connector 24 fits into the feeding port when the device is not in use.
A gasket 25 provides a sliding friction fit along the 35 catheter and moves outwardly along the catheter in response to peristaltic forces, stomach movements, etc., and to prevent the device from being drawn into the patient s stomach. Gasket 25 has a plurality of legs 26 which rest against the user's body, and along with a plurality of air vent bores 27, permit better air circulation and reduce the presence of moisture.
Generally speaking a size differential of about 10 -20 mils between the outside diameter of the catheter and the insider diameterlof' the gasket bore is employed to produce a sliding friction fit between the gasket and catheter.
FIGS. 4 and 5 illustrate the gastrostomy tube 10 when installed through a stoma 16 of a patient as shown in ~5 FIG. 4, and during commencement of its removal, shown in FIG. 5. When installed, as shown in FIG. 4, the gastrostomy tube permits feeding through the catheter 11, while being retained within the stomach of the patient by means of the flange 12. The retention characteristics of 20 the present gastrostomy tube in the patient are quite adequate. When the gastrostomy tube 10 is retracted, usually for replacement purposes, the flange commences to collapse 17 as the retraction begins, and this initial collapse can be felt by the health care worker, physician, 25 etc., who perform the procedure. Hence, following this initial collapse, less subsequent force compared to prior art devices, is required to pull the gastrostomy device from the patient's body.
Removal of these prior art devices from the patient 30 frequently results in trauma, and often requires the use of masks and/or other coverings by medical workers when performing this procedure. The gastrostomy device of the present invention is less painful and traumatic to the patient during its removal, and is less troublesome to 35 health care workers.
Claims (9)
OR PRIVILEGE IS CLAIMED ARE DEFINED AS FOLLOWS:
1. A gastrostomy tube comprising:
a catheter member comprising a distal end for placement within a patient's stomach, and a proximal end extending outside of the patient to provide access for feeding the patient through the catheter member and a dome-shaped flange means mounted to the distal end and having a first diameter for retaining the gastrostomy tube in place within the stomach of the patient, and characterized in that the dome-shaped flange means comprises a sufficiently resilient and flexible reinforcing means for collapsing the dome-shaped flange means upon itself to form a second diameter smaller than the first diameter so as to become elongated in form to permit passage of the dome-shaped flange means through a body opening without the aid of an insertion and removal tool when the dome-shaped flange means is drawn through a body opening having a diameter less than the first diameter in response to a traction force applied to the catheter member.
a catheter member comprising a distal end for placement within a patient's stomach, and a proximal end extending outside of the patient to provide access for feeding the patient through the catheter member and a dome-shaped flange means mounted to the distal end and having a first diameter for retaining the gastrostomy tube in place within the stomach of the patient, and characterized in that the dome-shaped flange means comprises a sufficiently resilient and flexible reinforcing means for collapsing the dome-shaped flange means upon itself to form a second diameter smaller than the first diameter so as to become elongated in form to permit passage of the dome-shaped flange means through a body opening without the aid of an insertion and removal tool when the dome-shaped flange means is drawn through a body opening having a diameter less than the first diameter in response to a traction force applied to the catheter member.
2. The gastrostomy device of claim 1, in which the dome-shaped flange means is secured to the catheter by means of adhesives, heat sealing, sonic bonding, or by being integrally formed therewith.
3. The gastrostomy device of any preceding claim in which the reinforcing means comprises a reinforcement member having a shape that is either cruciform, elliptical, triangular, rectangular, striated, or asterism.
4. The gastrostomy device of any preceding claim in -Page 1 of Claims-which the reinforcement member is formed on the dome-shaped flange means by means of heat sealing, adhesive sealing, sonic bonding or integrally forming by injection molding.
5. The gastrostomy device of any preceding claim in which the dome-shaped flange means is about 20 - 35 mils thick, the reinforcement member is about 20 - 25 mils thick, and a central area of the dome-shaped flange means is about 40 - 60 mils thick.
6. The gastrostomy device of any preceding claim in which the dome-shaped flange means and catheter member are constructed of a biocompatible polymer selected from the group consisting of a silicone elastomer, silicone copolymer and polyurethane.
7. The gastrostomy tube of any preceding claim further characterized by an extension of the catheter member from the patient, a feeding port being mounted on the extension, and a gasket mounted along the catheter member, and forming a sliding friction fit therewith to accommodate for peristaltic expansion and stomach movements, and to prevent the catheter member from being drawn into the patient.
8. A gastrostomy tube comprising:
a catheter member comprising a distal end for placement within a patient's stomach, and a proximal end extending outside of the patient to provide access for feeding the patient through the catheter member and a flange means mounted at the distal end of the catheter member for retaining the gastrostomy tube in place within the stomach of the patient, the flange means comprising a flexible, thin-walled -Page 2 of Claims-retention dome member having an approximately hemispherical shape, and characterized in that the dome member is reinforced by a reinforcing member completely joined to a surface of the dome member, and the reinforcing member has a shape that together with the dome member defines a first thickened central portion, and remaining portions of the dome member without the reinforcing member defining other thinner, peripheral portions, and the other thinner peripheral portions of the dome member causing the dome member to collapse upon itself so as to form an elongate shape without the aid of an insertion and removal tool when passing through a body opening smaller than the uncollapsed dome member during placement or removal of the gastrostomy tube, and the first thickened central portion causing the dome member to expand from its collapsed shape back to its hemispherical shape solely due to its flexibility and without requiring the use of a tool after passing completely through the body opening, so as to thereafter conform to the patient's stomach, and thereby securing the gastrostomy tube in place therein.
a catheter member comprising a distal end for placement within a patient's stomach, and a proximal end extending outside of the patient to provide access for feeding the patient through the catheter member and a flange means mounted at the distal end of the catheter member for retaining the gastrostomy tube in place within the stomach of the patient, the flange means comprising a flexible, thin-walled -Page 2 of Claims-retention dome member having an approximately hemispherical shape, and characterized in that the dome member is reinforced by a reinforcing member completely joined to a surface of the dome member, and the reinforcing member has a shape that together with the dome member defines a first thickened central portion, and remaining portions of the dome member without the reinforcing member defining other thinner, peripheral portions, and the other thinner peripheral portions of the dome member causing the dome member to collapse upon itself so as to form an elongate shape without the aid of an insertion and removal tool when passing through a body opening smaller than the uncollapsed dome member during placement or removal of the gastrostomy tube, and the first thickened central portion causing the dome member to expand from its collapsed shape back to its hemispherical shape solely due to its flexibility and without requiring the use of a tool after passing completely through the body opening, so as to thereafter conform to the patient's stomach, and thereby securing the gastrostomy tube in place therein.
9. The gastrostomy device of claim 8, in which the flange means and catheter member are made of a biocompatible polymer selected from the group consisting of silicone elastomer, silicone copolymer and polyurethane.
-Page 3 of Claims-
-Page 3 of Claims-
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US07/901,894 US5356391A (en) | 1992-06-22 | 1992-06-22 | Flexible retainer flange for gastrostomy tube and the method of installing it |
| PCT/US1994/000205 WO1995018640A1 (en) | 1992-06-22 | 1994-01-06 | Flexible retainer flange for gastrostomy tube |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CA2171938A1 CA2171938A1 (en) | 1995-07-13 |
| CA2171938C true CA2171938C (en) | 1999-10-26 |
Family
ID=26788152
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA002171938A Expired - Fee Related CA2171938C (en) | 1992-06-22 | 1994-01-06 | Flexible retainer flange for gastrostomy tube |
Country Status (11)
| Country | Link |
|---|---|
| US (1) | US5356391A (en) |
| EP (1) | EP0740556B1 (en) |
| JP (1) | JP2935570B2 (en) |
| AT (1) | ATE225672T1 (en) |
| AU (1) | AU678218B2 (en) |
| CA (1) | CA2171938C (en) |
| DE (1) | DE69431530T2 (en) |
| DK (1) | DK0740556T3 (en) |
| ES (1) | ES2184760T3 (en) |
| PT (1) | PT740556E (en) |
| WO (1) | WO1995018640A1 (en) |
Families Citing this family (70)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5356391A (en) * | 1992-06-22 | 1994-10-18 | Medical Innovations Corp. | Flexible retainer flange for gastrostomy tube and the method of installing it |
| CA2126150C (en) | 1993-07-14 | 2005-02-22 | David T. Green | Seal assembly for accommodating introduction of surgical instruments |
| US5391159A (en) * | 1994-02-04 | 1995-02-21 | Hirsch; William H. | Gastrostomy tube with improved internal retaining member |
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-
1994
- 1994-01-06 WO PCT/US1994/000205 patent/WO1995018640A1/en active IP Right Grant
- 1994-01-06 ES ES94909435T patent/ES2184760T3/en not_active Expired - Lifetime
- 1994-01-06 DE DE69431530T patent/DE69431530T2/en not_active Expired - Lifetime
- 1994-01-06 JP JP6523641A patent/JP2935570B2/en not_active Expired - Lifetime
- 1994-01-06 AU AU62282/94A patent/AU678218B2/en not_active Expired
- 1994-01-06 PT PT94909435T patent/PT740556E/en unknown
- 1994-01-06 AT AT94909435T patent/ATE225672T1/en not_active IP Right Cessation
- 1994-01-06 CA CA002171938A patent/CA2171938C/en not_active Expired - Fee Related
- 1994-01-06 EP EP94909435A patent/EP0740556B1/en not_active Expired - Lifetime
- 1994-01-06 DK DK94909435T patent/DK0740556T3/en active
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| WO1995018640A1 (en) | 1995-07-13 |
| ES2184760T3 (en) | 2003-04-16 |
| ATE225672T1 (en) | 2002-10-15 |
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| US5356391A (en) | 1994-10-18 |
| EP0740556A4 (en) | 1997-11-19 |
| DE69431530D1 (en) | 2002-11-14 |
| JP2935570B2 (en) | 1999-08-16 |
| AU6228294A (en) | 1995-08-01 |
| EP0740556A1 (en) | 1996-11-06 |
| PT740556E (en) | 2003-02-28 |
| AU678218B2 (en) | 1997-05-22 |
| EP0740556B1 (en) | 2002-10-09 |
| CA2171938A1 (en) | 1995-07-13 |
| DK0740556T3 (en) | 2003-02-10 |
| DE69431530T2 (en) | 2003-08-07 |
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