Surgery – Magnetic field applied to body for therapy – Magnetic element placed within body
Patent
1988-03-22
1990-03-13
Truluck, Dalton L.
Surgery
Magnetic field applied to body for therapy
Magnetic element placed within body
600 9, 128401, 128804, 128897, 606185, 606192, A61N 100
Patent
active
049080113
DESCRIPTION:
BRIEF SUMMARY
The present invention relates to a method of performing a puncturing work on an inflated balloon implated in a patient.
Furthermore, the invention relates to a device for exercising a method of this type.
To produce an artificial sense of satiety it is well known to insert a collapsed balloon into the stomach of humans and then to inflate it. The same may be applied to animals to control their growth. When the balloon is to be removed again it is known to puncture it by means of a gastroscope and a catheter which are inserted into the stomach through the oesophagus and to perforate the balloon mechanically. After being puncture the balloon may be removed up through the oesophagus or it may be left in the stomach and leave with faeces, which normally will occur without any difficulties. Of course, the insertion of catheter and gastroscope for puncturing the balloon will cause discomfort and danger of infection to the patient.
It is also possible to puncture an intragastric balloon by means of a puncturing needle which is inserted through the skin and the stomach wall, which likewise will cause discomfort and danger of infection to the patient.
The object of the present invention is to overcome these drawbacks. This is obtained when exercising the invention according to said method by providing the balloon-like object with a high-frequency receiver system, by producing a high-frequency electromagnetic field in proximity to the patient which field is capable of penetrating into the patient and producing an electric current in the receiver system, and by causing said current to activate a puncturing device in the balloon-like object.
Thus, it is possible without any surgical or other mechanical opeation to puncture effectively the inflated balloon-like object which in case of an intragastric balloon then will leave with faeces so that the only discomfort which the patient is subjected to in connection with the use of the balloon is the actual implantation of said balloon into the stomach and the inflation of it.
In an advantageous embodiment of the method according to the invention the condition of the receiver system is checked by detection of a signal produced by the receiver system in response to a HF-signal emitted outside the patient. Thus, in a simple way it is possible to monitor from time to time whether the balloon is intact and ready for puncture without the use of e.g. X-rays.
The device for exercising the method according to the invention is characterized in that it comprises a combination of a high-frequency generator supplying HF-energy to an antenna coil which generates a HF-field that is capable of penetrating into the patient in proximity to the coil, a high-frequency receiver system in the balloon-like object, and an electrically activatable puncturing device coupled to said circuit.
The invention will now be further explained with reference to the drawing wherein
FIG. 1 shows an embodiment of the device according to the invention,
FIG. 2 shows a balloon in an enlarged scale provided with an electric HF-receiver circuit,
FIG. 3 shows a schematical diagram of a further balloon receiver circuit,
FIG. 4 shows an embodiment of a capacitor placed in the balloon and
FIG. 5 shows a further embodiment of a capacitor in a cross sectional view along the line V--V in FIG. 2.
The embodiment of the total puncturing device according to the invention shown schematically in FIG. 1 comprises a high-frequency generator 1 which operates at e.g. 27.12 MHz, but a plurality of various frequencies are just as suitable. The HF-energy of the generator is supplied to an antenna 2 generating a high-frequency electromagnetic field. A patient's 3 stomach 4 contains an intragastric balloon 5, which is implanted in collapsed state through the oesophagus 6 by means of a catheter and gastroscope (not shown) and inflated with air through a tube (not shown) which is then removed. The balloon 5 shown in FIG. 1 is provided with an electric circuit 7, which will be further explained below.
The intragastric balloon 5 in FIG. 2 pre
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Jacobsen Erik
Langkaer Carsten
Northeved Allan
Overland Christian
Ballobes ApS
DeFranco Denise W.
Truluck Dalton L.
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