Surgery – Means for introducing or removing material from body for... – Treating material introduced into or removed from body...
Patent
1993-12-08
1996-10-29
Clarke, Robert A. H.
Surgery
Means for introducing or removing material from body for...
Treating material introduced into or removed from body...
623 11, 6048901, A61M 1100
Patent
active
055691943
DESCRIPTION:
BRIEF SUMMARY
TECHNICAL FIELD
The present invention relates to a means for bringing about a permanent connection between the abdominal wall and the abdominal cavity of living beings. The means consists of an implant and is intended to administrate medicines into the abdominal cavity.
PRIOR ART
Since a few years one has implanted different objects in the body intended to facilitate some functions of the body, support body parts or emit medicines in desired doses. Examples of such implants are the so called pacemaker, prosthesis and nails in bones, anchoring elements for artificial teeth and supply arrangements for medicines to the soft parts of the body.
One such example of a supply means for medicines or liquids to the soft parts of the body is described in the Swedish patent 8500946-2. At this device one has brought about a permanent passage in the abdominal wall into the abdominal cavity and the arrangement comprises substantially an anchoring plate of titanium in the abdominal wail having a conduit connection outwardly and inwardly through which one has introduced a hose of silicone for supplying the medicine or the liquid to the proper place in the abdominal cavity.
Electronically controlled pumps having a reservoir of medicines intended to in a predetermined way give an adapted amount of medicines via pipes or channels in the body are also known implants. Deceases which can be treated by means of such implants are inter alia diabetes.
With regard to the treatment of diabetes the use of insulin has during the last decade become more and more individually directed with the aim to obtain a dose of insulin which is optimal for each person taking into account the food intake and the activity. The importance of individually adapted administration in the form of injection has great influence for the minimizing of complications inter alia in the form of vascular and nerve lesions, which can occur for patients having diabetes and which for example can result in impaired vision and limb discomforts. An administration of insulin which is coupled to the need of the patient and which is conducted by the patient or the doctor is then to be regarded as an improvement over the present injection technique. Such an improved technique is to release the medicine from an in the body of the patient implanted reservoir for insulin. It is thus when using such a reservoir with automatic administration of the insulin necessary that the device which makes the work does not change with time so that the supply of medicine also automatically changes in a not desired way. It is above all important that the opening of the cannula, the hose or the pipe which are used are not clogged by the tissue of the body which is growing firmly connected in the device. In connection with implants it must be further regarded that those materials which are used are compatible with the body of man. This means that the materials may not cause inflammation or negative reaction of the tissues in a not desired degree or stimulate the break out of infections. Such a reaction can result in that tissue is growing over the implant or is fastened in it. It is therefore of greatest importance that suitable materials are chosen in the implant.
THE TECHNICAL PROBLEM
It has therefore since long been a desire that at administration of medicines in the abdominal cavity bring about a device in the shape of a reservoir for the medicines in the abdominal wall which is permanently fastened in the tissue and accordingly does not move in abdominal wall, which device comprises an irritation free passage of a conduit stud or the like between the abdominal wall and the abdominal cavity and which makes it sure that the effluent function of the medicine into the abdominal cavity does not change or is not disturbed by overgrowing of tissue over the pipe outlet. This latter phenomena with overgrowing and clogging of the outlet has been a large problem at the known devices.
THE SOLUTION
Through the present invention one has solved the problems at the known devices and satisfied the
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patent: 4781694 (1988-11-01), Branemark et al.
patent: 4886501 (1989-12-01), Johnson et al.
patent: 4911717 (1990-03-01), Gaskill et al.
patent: 4946444 (1990-08-01), Heimke et al.
patent: 5213574 (1993-05-01), Tucker
NY Teknik -Tidskrift, vol. 46, 1991, Jan Melin: "Insulinpump ersatter dagliga injektioner," p. 4. (with translation).
Ericson Lars
Thomsen Peter
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