Pediatric atresia magnets

• US 7,282,057 B2
• Filed: 03/30/2004
• Issued: 10/16/2007
• Est. Priority Date: 03/30/2004
• Status: Active Grant

• Current Assignee: Cook Medical Incorporated (Cook Group Incorporated)
• Original Assignee: Wilson-Cook Medical Incorporated (Cook Group Incorporated)
• Inventors: Surti, Vihar C., Zaritzky, Mario
• Primary Examiner(s): Lucchesi; Nicholas D.
• Assistant Examiner(s): KOHARSKI, CHRISTOPHER
• Application Number:
  US10/802,555
• Publication Number:
  US 20050228412A1
• Time in Patent Office: 1,295 Days
• Field of Search: 604/264, 604508- 10, 604/529, 6041022-1023, 60410301-1034, 600/101, 600/115, 600/123, 600/156, 600/593, 606/41, 606/153, 606/185, 128/898, 607/122
• US Class Current: 606/153
• CPC Class Codes: A61B 17/1114 of the digestive tract, e.g. bowels or oesophagus
• 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: A61B 2017/00876 magnetic
• CPC Class Codes: A61J 15/0003 Nasal or oral feeding-tubes, e.g. tube entering body through nose or mouth
• CPC Class Codes: A61J 15/0007 inserted by using a guide-wire guide wires A61M25/09
• CPC Class Codes: A61J 15/0042 inflatable
• CPC Class Codes: A61J 15/0061 fixing at an intermediate position on the tube, i.e. tube protruding the fixing means
• CPC Class Codes: A61M 2039/0255 for access to the gastric or digestive system
• CPC Class Codes: A61M 2039/0273 for introducing catheters into the body
• CPC Class Codes: A61M 39/0247 Semi-permanent or permanent transcutaneous or percutaneous access sites to the inside of the body peritoneal dialysis catheters A61M1/285; tracheostomy devices A61M16/0465; measuring pressure within the body A61B5/03; colostomy devices A61F5/445; gastrotomy feeding tubes A61J15/0015; means for fixing a feeding tube outside of the body A61J15/0053

Abstract

A medical system for approximating the esophageal sacs in an infant afflicted with esophageal atresia. The medical device includes an esophageal catheter and a gastric catheter. The distal end of the esophageal catheter, which includes a magnetic tip, is passed through the esophagus to the upper esophageal sac. The distal end of the gastric catheter, which also includes a magnetic tip, is passed through a gastrostomy and into the lower esophageal sac. The magnetic forces created by both magnets results in approximation of the esophageal sacs. Pressure-induced necrosis establishes a passageway between the esophageal sacs. A stent or stent-graft can be deployed within the established passageway to prevent re-synopsis of the esophagus.

Claims

1. A medical system for joining an upper esophageal sac and a lower esophageal sac in an infant, the medical device comprising:

a first elongate member comprising an operative end, a distal end and an upper magnet having a constant magnetic force connected to the distal end, the upper magnet comprising an end portion having one of a protruding surface or a recessed surface and the upper magnet further having an upper magnet passageway therethrough and being configured to abut an interior surface of the upper esophageal sac; and

a second elongate member comprising an operative end, a distal end, and a lower magnet connected to the distal end, the lower magnet comprising an end portion having the other of a protruding surface or a recessed surface and the lower magnet further having a lower magnet passageway and being configured to abut an interior surface of the lower esophageal sac;

wherein the upper magnet and the lower magnet are configured to mate so as to approximate the upper esophageal sac and the lower esophageal sac, and further wherein the upper and lower magnet passageways operably connect to form a substantially continuous passageway between the upper magnet and the lower magnet when the upper and lower esophageal sacs are joined.

2. The medical system of claim 1, wherein the upper magnet is bullet-shaped and the lower magnet comprises a bullet-shaped recess.

3. The medical system of claim 1, wherein the upper magnet comprises a bullet-shaped recess and the lower magnet is bullet-shaped.

4. The medical system of claim 1, further comprising:

a guide wire; and

a passageway extending axially through the first elongate member, the passageway being adapted to receive the guide wire.

5. The medical system of claim 1, wherein the first elongate member further comprises:

a passageway extending axially through the first elongate member; and

a flexible elongate member extending axially through the interior of the passageway, the flexible elongate member being operatively connected to the upper magnet.

6. The medical system of claim 1, wherein the second elongate member further comprises:

a passageway extending axially through the second elongate member; and

a flexible elongate member extending axially through the passageway, the flexible elongate member being operatively connected to the lower magnet.

7. The medical system of claim 6, wherein the second elongate member further comprises:

a balloon; and

a second passageway extending axially through the second elongate member, the second passageway having a distal end and an operative end, the distal end of the second passageway being connected to the balloon; and

a balloon operation hub operatively connected to the operative end of the second passageway.

8. The medical device of claim 7, wherein the second elongate member further comprises:

a plurality of ports;

a third passageway extending axially through the second elongate member, the third passageway having a distal end and an operative end, the distal end of the third passageway being configured to communicate with the plurality of ports; and

a gastrostomy hub operatively connected to the operative end of the third passageway.

9. The medical system of claim 6, further comprising a hub operatively connected to the operative end of the second elongate member;

and a valve operatively connected to the hub.

10. The medical system of claim 1, wherein the second elongate member further comprises:

a balloon; and

a passageway extending axially through the elongate member, the passageway having a distal end and an operative end, the distal end of the passageway being connected to the balloon; and

a balloon operation hub operatively connected to the operative end of the passageway.

11. The medical device of claim 1, wherein the second elongate member further comprises:

a plurality of ports;

a passageway extending axially through the second elongate member, the passageway having a distal end and an operative end, the distal end of the passageway being configured to communicate with the plurality of ports; and

a gastrostomy hub operatively connected to the operative end of the passageway.

12. The medical system of claim 1, further comprising a band and a flared distal portion, wherein the upper magnet is secured to the distal end of the first elongate member by the band and the flared distal portion.

13. A medical system for joining an upper esophageal sac and a lower esophageal sac, the medical system comprising:

an esophageal catheter comprising;

an operative end, a distal end, and an upper magnet, the upper magnet having a constant magnetic force and being configured to abut an interior surface of the upper esophageal sac; and

a passageway extending axially through the esophageal catheter; and

a gastric catheter comprising;

an operative end, a distal end, and a lower magnet, the lower magnet being configured to abut an interior surface of the lower esophageal sac, wherein the upper magnet is configured to constantly attract the lower magnet;

a passageway extending axially through the gastric catheter, the passageway having an operative end;

a hub operatively connected to the operative end of the passageway;

a balloon;

a second passageway extending axially through the gastric catheter, the second passageway having a distal end and an operative end, the distal end of the passageway being connected to the balloon;

a balloon operation hub operatively connected to the operative end of the second passageway;

a plurality of ports;

a third passageway extending axially through the gastric catheter, the third passageway having a distal end and an operative end, the distal end of the third passageway being configured to communicate with the plurality of ports; and

a hub operatively connected to the operative end of the third passageway,

wherein the upper and lower magnets are configured to mate so that the esophageal catheter passageway is operably connectable to the gastric catheter passageway to create a substantially continuous passageway therethrough when the upper and lower esophageal sacs are joined.