Surgery – Means for introducing or removing material from body for... – Treating material introduced into or removed from body...
Patent
1995-09-01
1998-04-14
McDermott, Corrine M.
Surgery
Means for introducing or removing material from body for...
Treating material introduced into or removed from body...
604 43, 604 28, 604 67, 604 26, A61M 100
Patent
active
057386560
DESCRIPTION:
BRIEF SUMMARY
In conventional drainage or removal of fluids from a body cavity, in particular from the pleural cavity, by suction usually a single-lumen tube is used, which is introduced into the body cavity via a trocar or by surgical methods. Through connection of the tube to a negative pressure source, fluid, such as air or liquid, is sucked off from the body cavity.
Most of the conventional drainage systems for body cavities do not allow the flow rate to be measured. They often do not even provide a reading as to whether any flow from the cavity occurs at all. However, constructions are also known wherein the flow is shown for instance by the passage of the suction-removed gas stream through a liquid, with rising bubbles indicating the presence of flow.
On the other hand, a quantitative indication of the initial as well as the possibly continuously suction-removed amount of gas or liquid is a clinically significant piece of information. For instance, in the case of a persisting leakage between the bronchial system and the pleural cavity it is possible to deduce from the amount of the breathing air flowing into the pleural cavity per minute whether a spontaneous closure of the leakage is to be expected or whether a surgical operation is to be contemplated.
A precise measurement of the amount of the suction-removed fluids would also be desirable because the optimum negative pressure in the drainage system can only be determined by measurement of the flow. The negative pressure or suction is optimal, if it results in the removal of a maximum amount of gas or liquid per time interval. This does not necessarily mean maximum suction, because too high a suction often results in an adhesion of anatomic structures, for instance peripheral lung portions, in the case of pleura drainage, or clots at the suction opening of the tube, and consequently leads to a blockage of the drainage.
Also, the conventional drainage systems are liable to failure. For instance, liquid that is present in sagging portions of the tube, reduces the negative pressure at the proximal end, i.e. the patient's end, or even eliminates it altogether. The same holds true for liquid coagulating in the tube and for kinks. Such disorders often also occur in the vision-barred portion of the drainage system extending from the bandage cover up to the body cavity, for instance up to the interior of the thorax, and are therefore difficult to perceive. It is then possible for gas or liquid to still or again accumulate in the patient's body cavity. An indication thereof can only be obtained by using thorough investigation methods, such as auscultation (stethoscopy) or X-rays. If such problems are not recognized in time, the patient may also develop critical symptoms.
DE-C2-34 30 095 discloses an apparatus for irrigating hollow organs of the body and its use for anticonceptive douches of the uterus and for enteral/intestinal dialysis, this apparatus being designed for the treatment of diseases by effectively and yet gently irrigating cavities, which are otherwise difficult to reach or altogether inaccessible. Said apparatus is equipped with a pressure tube for supplying the lavage liquid, the front end of the pressure tube comprising a nozzle head with nozzles pointing backwards and additionally in its front area several nozzles pointing backwards to provide a front thrust within the body and for the irrigation action. A suction tube also comprises lateral perforations in its front area. Hence, in the entire front area of the irrigating apparatus, the pressure tube and the suction tube are in fluid communication, and the pressure tube and the suction removal tube are not irrigated axially over their full lengths. An examination and a possible restoration of the free passage in the irrigating apparatus are not intended.
U.S. Pat. No. 4,650,462 discloses an irrigation system for use in endoscopic methods, in particular in arthroscopic surgery. The irrigation system comprises a supply conduit, a conduit for measuring and controlling the pressure and a withdrawal conduit;
REFERENCES:
patent: 4372336 (1983-02-01), Cornell et al.
patent: 4569344 (1986-02-01), Palmer
patent: 4735606 (1988-04-01), Davison
patent: 5029580 (1991-07-01), Radford et al.
Blyveis Deborah
McDermott Corrine M.
LandOfFree
Drainage apparatus and method of use does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Drainage apparatus and method of use, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Drainage apparatus and method of use will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-631320