Gastrostomy Tube Extension Device

• US 20070287962A1
• Filed: 04/29/2005
• Published: 12/13/2007
• Est. Priority Date: 04/30/2004
• Status: Active Grant

• Current Assignee: Kpr U.S., LLC (Cardinal Health, Inc.)
• Original Assignee: Nippon Sherwood Medical Industries Ltd. (Cardinal Health, Inc.), Tyco Healthcare Group LP (Medtronic Plc)
• Inventors: Watanabe, Motonori, Abe, Kazuhiro, Nagata, Katsuki
• Granted Patent: US 8,147,454 B2
• Time in Patent Office: Days
• US Class Current: 604/164.40
• CPC Class Codes: A61B 17/3415 for introducing tubes or catheters, e.g. gastrostomy tubes, drain catheters A61B17/3417 takes precedence; body piercing catheter guide needles A61M25/06
• CPC Class Codes: A61J 15/0015 Gastrostomy feeding-tubes insertion tools or methods A61B17/34
• CPC Class Codes: A61J 15/0026 Parts, details or accessories for feeding-tubes external tubes from medical containers to a connector outside of the body A61M39/08
• CPC Class Codes: A61J 15/0038 expandable, e.g. umbrella type
• CPC Class Codes: A61J 15/0057 fixing a tube end, i.e. tube not protruding the fixing means
• CPC Class Codes: A61M 25/04 in the body, e.g. expansible A61M25/10, A61M16/0488 take precedence
• CPC Class Codes: A61M 25/0662 Guide tubes

Abstract

To provide a gastrostomy tube extension device which can facilitate the insertion or removal operation in and from the patient, as well as to increase the simplicity of manufacture without sacrificing safety of operation. [Solving Means] A gastrostomy tube extension device 20 used for inserting or taking out the gastrostomy tube 10 into/from the hole on the patient includes a rod 21, a fixing member 22, and an engaging member 23. The rod 21 is formed of a rod-shaped member, and is formed with engaging stepped portions 24a on the proximal portion thereof. The fixing member 22 is adapted to be capable of moving along the longitudinal direction of the rod 21, and an engaging projection 35 which can be fixed to the tube member 11 is formed on the peripheral surface of the fixing member 22. The engaging member 23 includes a lower engaging portion 26 engageable with the engaging projection 35 and an upper engaging portion 27 which is engageable with the engaging stepped portion 24a. This assembly allows the extension to be locked, allowing the operator to manipulate the device with a single hand.

Claims

1. A gastrostomy tube extension device used for inserting or taking out a gastrostomy tube into/from a hole in a patient, the gastrostomy tube comprising a stomach interior fixing member to be installed inside the stomach wall at a hole formed between the outer surface of a patient'"'"'s skin and the inner surface of the stomach wall, and a tube member connected to the stomach interior fixing member and extended through the hole to the outside of the patient'"'"'s body, the gastrostomy tube extension device comprising:

an extender comprising a rod-shaped member which can be inserted into the tube member and can elongate and narrow the stomach interior fixing member by pushing the distal end of the stomach interior fixing member toward the distal side with the distal end of rod-shaped member;

a fixing member which is capable of moving along the longitudinal direction of the extender while being fixed to the outside end of the tube member which is located out of the body and being inside the tube member;

an engaging portion which is engageable with the fixing member; and

an engaging member having a holding portion for holding by hand for operation and elongating the stomach interior fixing member when the holding portion is pulled in the direction of the outside end of the tube member while the extender is inserted in the tube member and the engaging portion is engaged with the fixing member fixed to the outside end of the tube member.

2. The gastrostomy tube extension device according to claim 1, wherein the fixing member is hollow cylindrical, surrounding the outer peripheral surface of the extender and capable of moving along the longitudinal direction of the extender, and the cylindrical member is formed with a fixed portion to be fixed at the end of the tube member which is located out of the body and an engaged portion to be engaged with the engaging portion of the engaging member.

3. The gastrostomy tube extension device according to claim 2, wherein the fixed portion is formed of a projection which is formed on the outer peripheral surface of the cylindrical member so as to be capable of being press-fitted into the tube member.

4. The gastrostomy tube extension device according to claim 3, wherein the projection which constitutes the fixed portion is formed of a projection formed on the outer peripheral surface of the cylindrical member along the circumference thereof having a tapered portion the diameter of which is smaller at the distal end when press-fitted into the tube member and gradually increases toward the proximal end.

5. The gastrostomy tube extension device according to claim 4, wherein the engaged portion is formed of the projection which constitutes the fixed portion, and the engaging portion of the engaging member is adapted to engage the outer peripheral surface of the tube member through which the cylindrical member is press-fitted so as to fix the fixed portion at a portion corresponding to the engaged portion.

6. The gastrostomy tube extension device according to claim 1, wherein a positioning portion is provided on the peripheral surface of the proximal portion of the extender and a positioned portion which can engage the positioning portion is provided on the engaging member so that the stomach interior fixing member is elongated and narrowed when the fixing member is engaged with the engaging portion and the positioning portion is engaged with the positioned portion respectively while the extender is inserted into the tube member.

7. The gastrostomy tube extension device according to claim 6, wherein a plurality of the positioning portions are formed along the axial direction of the extender.

8. A gastrostomy tube extension device used for inserting or taking out a gastrostomy tube into/from a hole on a patient, the gastrostomy tube comprising a stomach interior fixing member to be installed inside of a stomach wall at the hole formed between the outer surface of the patient'"'"'s skin and the inner surface of the stomach wall, and a tube member connected to the stomach interior fixing member and extending through the hole to the outside of the patient'"'"'s body, the gastrostomy tube extension device comprising:

an extender formed of a rod-shaped member which can be inserted into the tube member and can elongate and narrow the stomach interior fixing member by pushing the distal end of the stomach interior fixing member toward the distal side by the distal portion of the rod-shaped member; and

a fixing portion formed on the peripheral surface near the outer end of the tube member outside the body.

9. The gastrostomy tube extension device according to claim 8 further comprising an engaging member including an engaging portion being capable of engaging the fixing portion and a holding portion to be held by hand for operation of the device so that when the extender is inserted into the tube member and the engaging portion is engaged with the fixing portion fixed to the outer end of the tube member, the stomach interior fixing member elongates and narrows when the holding portion is pulled in the proximal direction.

10. The gastrostomy tube extension device according to claim 9, wherein a positioning portion is formed on the peripheral surface of the proximal portion of the extender, and a positioned portion which is capable of engaging the positioning portion is formed on the engaging member, so that when the extender is inserted into the tube member and the fixing portion is engaged with the engaging portion and the positioning portion is engaged with the positioned portion respectively, the stomach interior fixing member can be elongated and narrowed.

11. The gastrostomy tube extension device according to claim 10, wherein a plurality of positioning portions are provided along the axial direction of the extender.

12. A gastrostomy tube extension device used for inserting or taking out a gastrostomy tube into/from a hole on a patient, the gastrostomy tube comprising a stomach interior fixing member to be installed inside of a stomach wall at a hole formed between the outer surface of the patient'"'"'s skin and the inner surface of the stomach wall, and a tube member connected to the stomach interior fixing member and extending through the hole to the outside of the patient'"'"'s body, the gastrostomy tube extension device including:

an extender formed of a rod-shaped member which can be inserted into the tube member and can elongate and narrow the stomach interior fixing member by pushing the distal end of the stomach interior fixing member toward the distal side by the distal portion of the rod-shaped member (21); and

a movable fixing member which includes a fixing portion which is capable of being fixed to the outside end of the tube member which is located out of the body and a holding portion to be held by hand for operation of the device, and is movable along the longitudinal direction of the extender when inside the tube member.

13. The gastrostomy tube extension device according to claim 12, wherein the fixing portion of the movable fixing member is hollow cylindrical and movable along the longitudinal direction of the extender when surrounding the outer peripheral surface of the extender, and on the cylindrical member is formed a fixed portion to be fixed on the end of the tube member which is located out of the body.

14. The gastrostomy tube extension device according to claim 13, wherein the fixed portion may be formed on the outer peripheral surface of the cylindrical member and formed by projections which can be press-fitted into the tube member.

15. The gastrostomy tube extension device according to claim 14, wherein the projection comprising the fixed portion may be formed on the outer peripheral surface of the cylindrical member along the circumference thereof, and may comprise a tapered portion the diameter of which is smaller toward the distal end when press-fitted into the tube member and gradually increases toward the proximal end.

16. The gastrostomy tube extension device according to claim 15, wherein a tightening member is provided for constricting the outer peripheral surface of the tube member through which the cylindrical member is press-fitted, and where the fixed portion is fixed, in order to strengthen the fixation of the fixed portion to the tube member.

17. The gastrostomy tube extension device according to claim 12 wherein a positioning portion is formed on the peripheral surface of the proximal portion of the extender, and the movable fixing member is provided with a positioned portion which can engage the positioning portion, so that with the extender inserted into the tube member, the stomach interior fixing member is elongated and narrowed when the tube member is engaged with the fixing portion and the positioning portion is engaged with the positioned portion respectively with the extender inserted into the tube member.

18. The gastrostomy tube extension device according to claim 17, wherein the positioning portion is formed with a plurality of projections formed along the axial direction of the extender and the positioned portion is constituted of the cylindrical member formed of elastic material, and the positioned portion can be engaged with the predetermined portion of the positioning portion.