Artificial Sphincter and Intragastric Suspended Balloon

Abstract

A system of medical devices implantable in the human body using transabdominal gastroscopy surgery to repair failing sphincters and to prevent obesity. A stainless steel non-magnetic spring covered with silicon or other long-term tissue friendly plastic can be installed in place of a natural sphincter by tunneling through a non-functional natural sphincter and pulling the artificial sphincter into the tunnel to form a ring. The device can be tied on the end with suture to form a permanent structure. Without pressure, the device will be continuously closed; however, it will open under natural pressure on it just as a natural sphincter. A intragastric suspended balloon can be sutured into the stomach to cut appetite. The balloon can be roughly the shape of a pepper and take up room in the stomach without closing it off.

Claims

1. A method of repairing a non-functional natural sphincter comprising: using transabdominal gastroscopy, creating a tunnel within said natural sphincter; pulling a device with a spring contained in polymer tubing into said tunnel and completely around said sphincter; tying off non-absorbable suture thread attached to a first and last coil of said spring and to a first and last end of said tubing to form an approximate ring, wherein said device functions as an artificial sphincter.

2. The method of claim 1 wherein said natural sphincter is at the gastro-esophageal junction.

3. The method of claim 1 wherein said natural sphincter is the pyloric sphincter.

4. The method of claim 1 wherein said natural sphincter is the urinary sphincter.

5. The method of claim 1 wherein said natural sphincter is the anus.

6. The method of claim 1 wherein said polymer tubing is silicon rubber tubing.

7. The method of claim 1 wherein said spring is stainless steel.

8. The method of claim 7 wherein said spring is medical grade metal or plastic.

9. An artificial sphincter implantable in a human body comprising: a spring contained in a tight-fitting polymer tube, said tube having a continuous, approximately cylindrical wall of approximately fixed diameter, said spring contained in said tube adapted to be placed into a tunnel formed in a non-functioning natural sphincter, said spring, when implanted, forming a ring having a size equivalent to said natural sphincter; the sphincter being totally contained in the body and not exiting the body, the sphincter functioning independently and opening due to natural pressure forcing it open.

10. The artificial sphincter of claim 9 wherein said spring is stainless steel.

11. The artificial sphincter of claim 9 wherein said polymer tube is silicon rubber.

12. The artificial sphincter of claim 10 wherein said polymer tube is silicon rubber.

13. The artificial sphincter of claim 9 wherein said non-functioning natural sphincter is one of: gastro-esophageal, pyloric, urinary or anal.

14. An artificial sphincter implantable in a human body comprising: a stainless steel spring contained in a continuous tight-fitting silicon rubber tube adapted to be placed into a tunnel formed in a non-functioning natural human sphincter, said spring, when implanted, forming a ring having a size equivalent to said natural sphincter; the sphincter being totally contained in the body and not exiting the body, the sphincter functioning independently and opening due to natural pressure forcing it open.

Description

DESCRIPTION OF THE FIGURES

[0011] Attention is now directed to several drawings that illustrate features of the present invention:

[0012] FIG. 1 is a prior art (educational) schematic drawing of a human stomach.

[0013] FIG. 2A shows the artificial sphincter of the present invention installed in the esophagus/FIG. 2B shows a close-up view of the installation.

[0014] FIG. 3 shows the artificial sphincter laid out flat.

[0015] FIG. 4 shows the artificial sphincter in its installed position ready to be tied.

[0016] FIG. 5 shows the intragastric suspended balloon in its installed position.

[0017] Several drawings and illustrations have been presented to aid in understanding the present invention. The scope of the present invention is not limited to what is shown in the figures.

DESCRIPTION OF THE PREFERRED EMBODIMENT

[0018] The present invention relates to a system of devices that can be installed using endoscopic surgery. In particular, an artificial sphincter can be installed into any natural sphincter, and an intragastric suspended balloon can be installed in the stomach.

[0019] FIG. 1 shows the anatomy of the human stomach. The esophagus feeds through a natural sphincter into the cardal orifice of the stomach. At the lower end of the stomach contents leave the stomach for the small intestine through the pyloric sphincter.

[0020] FIG. 2A shows installation of the ring-shaped artificial sphincter 3 of the present invention at the bottom of the esophagus 2 in a tunnel made by the surgeon. The wall of the stomach 1 is shown for reference. FIG. 2B shows a close-up of the installation. It can be seen that sits in the tunneled-out natural sphincter and will function by opening and closing directly as pressure from food descending the esophagus. Without pressure, the device will be continuously closed and prevent gastroesphagal reflux of stomach acid into the esophagus.

[0021] FIG. 3 shows the artificial sphincter 3 laid out flat before installation. A coiled spring 6 runs the length of the device through a tube 5. A string 4 also can attached to each end of the spring 6 and the tube 5 and can be pre-threaded through into device (or the surgeon can thread the device after implantation). The device is covered with silicon tubing 5 or other long term tissue-friendly polymer. The tubing 5 should be fairly tight-fitting and match the diameter of the spring 6.

[0022] The spring 6 can be made of non-magnetic stainless steel or other medical grade metal or plastic that will expand from adequate pressure from above or from below. This allows food to enter the stomach from the esophagus during normal eating and for food to exit the stomach during vomiting. The spring 6 is placed in the plastic tubing 5.

[0023] After the artificial sphincter is placed into the tunnel made by the surgeon, non-absorbable thread 4 should be tied form a tight ring. Embodiments of the invention can also be supplied with the thread pre-installed.

[0024] The implantation procedure can be performed by a general surgeon using transabdominal gastroscopy with the assistance of conventional gastroscopy if needed. The surgeon first performs tunneling through the non-functional natural sphincter and then pulls the artificial sphincter into the tunnel. The device can be threaded (or supplied with threads), pulled into a ring, and tied off.

[0025] FIG. 4 shows the device of FIG. 3 in a ring configuration.

[0026] FIG. 5 shows an intragastric suspended balloon for obesity treatment. It is known in the art to place intragastric balloons in the stomach. They have a problem however. Since they typically float freely, they can sometimes produce symptoms of gastric outlet obstruction. The balloon of the present system is shaped and fixed in place in a particular way. The balloon should occupy about of the stomach space more or less, and be constructed in the shape of the stomach with the proximal end 20 round and bigger than the distal end gradually tapering down with the distal end 23 into the atrium. The final size of the installed balloon can be controlled by the amount of fluid-normal saline the surgeon injects to inflate the balloon. The proximal end should have a minimum of four non reabsorbed sutures 22 placed around the larger diameter of the proximal end 20. This suture should be attached to the cardia distally from the gasto-esophageal junction with a free length of 1.5 to 2.0 inches. These ties keep the balloon in an adequate position and will not produce gastric obstructive symptoms. With this embodiment of the invention, the patient feels full much sooner than otherwise.

[0027] Installation of the balloon should be performed by a general surgeon with transabdominal gastroscopy with the assistance of conventional gastroscopy if necessary. The balloon has an inflation port 21 that can be inflated through the esophagus or through transabdominal gastroscopy after suturing. The balloon is typically inflated with saline liquid. Any inflating technique that causes the balloon to maintain its shape is within the scope of the present invention.

[0028] Evectional removal can be performed by deflating the balloon, cutting the sutures and pulling the balloon out via the esophagus.

[0029] Several descriptions and illustrations have been presented to aid in understanding the present invention. One with skill in the art will realize that numerous changes, variations and additions may be made without departing from the spirit of the invention. Each of these changes and variations is within the scope of the present invention.