MXPA05004006A - Improved nasogastric probe - Google Patents

Abstract

Described herein is an improved nasogastric or Levin probe, which operation is similar to those currently available on the market, the inventive probe comprising distal apertures, and being connected to an intermittent suction system. A tube or micro cannula is introduced into the probe and led to the closed tip or terminal portion where the obstructed distal apertures are located;an air stream regulated by a bi-directional valve is introduced into the cannula in order to allow a small amount of air to flow and detach the stomach walls from the probe apertures, thus vacuuming the residual material contained therein. The present invention is characterised in that it comprises a transparent vacuum tube having an adapter located at one end portion thereof, the proximal end portion of the tube being closed and having oval or circular-shaped side apertures arranged at intervals of 180 degrees from each other;a second tube or micro cannula, which is smaller than the first tube so as to be introduced into said first tube by means of a second adapter, is diametrically opposite said apertures;both tubes are attached to a bi-directional valve. The present probe pertains to the medicine field and is particularly useful for extracting post-operative gastric liquids.

Description

IMPROVED NOSOGASTRIC PROBE SCOPE OF THE INVENTION A nosogastric tube or Levín probe is presented, which has been modified for the operation of a probe similar to that existing with diastolic orifices and connected to the same intermittent suction system, into which a tube or micro-cannula is inserted until reach the terminal or closed tip, where the distal holes are located clogged, by means of which a regulated air flow can be introduced by means of a bidirectional valve in such a way as to allow the entry of a small amount of air that allows to take off the walls of the stomach from the holes of the probe and the contained residual material can be vacuumed.

BACKGROUND OF THE INVENTION The nosogastric tube or Levín probe is a standard of hospital care and was designed by an American physician, Dr. Abraham Louis Levín (1880-1940) and is presented in an indistinguishable red color, constructed from a tube of hard rubber, particularly transparent for review and presents a single light and has the tip closed as well as four side holes near the tip. The Levín probes of the latest generation are constructed of transparent plastic material (polyurethane or silicone), to allow the inspection of aspirated gastric material. Also, the internal diameter of these new Levín probes is greater, which facilitates the aspiration of the material contained in the stomach. The Levín probe is used primarily for aspiration of the material contained within the stomach, and decompression of the gastric cavity, as desired in the post-operative stages of gastrointestinal surgery. The biocompatibility of the material with which the Levín probe is built is poor, so the probability of developing decubitus injuries at any level, from nares to esophagus, is high. The caliber of the Levín probe is very thick. The Levín probe hardens with body heat and gastric secretions, which increases the risk of developing decubitus injuries. These characteristics make it necessary to change the Levín probe every 7 - 10 days in cases of prolonged nasogastric intubation. Until today, the Levín probe presents several problems, as it is a rigid tube with distal perforations connected to a closed system of intermittent suction and because the stomach is a hollow viscera that stretches when full, when emptying its walls are paid to the holes of the probe obstructing them and rendering the suction system useless. Many solutions have been proposed for this problem, among others it is common for doctors to introduce a long catheter in the light of the probe, letting air in and thus preventing the walls of the stomach from clogging the orifices. This solution has not solved the problem until now. problem because when opening the suction system part of the negative pressure is lost with which the stomach is not completely sucked and the suction system is kept open by letting air in through the permanent catheter, while on the other hand, the sucked air The probe is the same air that enters through the catheter. In addition to being ineffective in this system, the cost of the catheter is high because it is a special material for endovascular use. To solve this problem, a modification to the Levín probe is proposed, allowing a probe similar to the one existing with diastolic orifices and connected to the same intermittent suction system, however, a tube or micro-cannula is introduced to this probe until reaching the terminal. or closed tip, by means of which an air current can be admitted in such a way as to inflate the gastric cavity and then, the contained residual material can be again aspirated. For an adequate control, at the end of the probe, a bidirectional pressure valve is placed, which is kept closed, allowing aspiration of the stomach, preventing the entry of air, however, at the moment when the distal orifices are obstructed., the negative pressure increases so the valve opens allowing the entry of a small amount of air, decreasing the suction pressure taking off the walls of the stomach from the holes of the probe, after this the valve closes and the negative pressure recovers as long as it does not exceed the opening pressure of the valve should it become clogged again. It is a simple system that does not require special medical materials and solves the problem of obstruction of probes at low cost effectively. According to the best knowledge of the author of the invention, an invention is not known which comprises the proposed novel features, BRIEF DESCRIPTION OF THE DRAWINGS Figure 1 is a view of a nosogastric probe of the present invention; Figure 1 is a view of a nosogastric probe attached to the bidirectional valve; DESCRIPTION OF THE INVENTION With regard to said figure, the nosogastric probe is formed by a transparent or translucent aspiration tube (10) whose finish on all surfaces should be uniform, free of bubbles, cavities, burrs, roughness, breaks, delaminations, collapses, infusible material, foreign material, chiclosas or softened parts, nodules, sharp edges, whose proximal end is closed and has lateral holes (12) of oval or circular shape placed at an angle of 180 degrees one of the other, diametrically opposed and staggered and which will be in contact with the walls of the stomach, and where to the second end, it carries an adapter (14) colored for identification and where the liquids of the stomach should be aspirated.

A micro cannula or probe similar to the existing one (20) is inserted inside the suction tube (10) until it reaches the terminal or closed tip (12), carrying on the other end, a second adapter (22) also colored by means of which it is possible to admit a current of air that will reach the gastric cavity.

A bidirectional pressure valve (30) joins at one end to a suction unit and at the other two ends, are attached to each of the adapters (14) and (22) of the probe, preventing the entry of air, without However, at the moment when the distal holes (12) are obstructed, the negative pressure increases so that the valve opens allowing the entry of a small amount of air, decreasing the suction pressure taking off the walls of the stomach from the orifices. the probe, of a micro cannula or probe similar to the one exist of smaller diameter and placed towards the inside of the aspiration tube, BEST METHOD OF CARRYING OUT THE INVENTION The nostrástrica probe that appears in a transparent container which turns out to be non-toxic and of disposable character, is placed in the patient.

To do this, the Levín probe has a single light, has the tip closed, and four lateral holes (12) near the tip. Measuring the tip of the probe backward, marks are observed in the form of one, two, three and four stripes, indicating lengths in 37, 54, 67 and 68 centimeters, respectively. The purpose of these marks is to guide health personnel on the length of the probe to be introduced. The distance from the dental arch to the cardia depends on the sex (read gender) of the patient. In men, this distance is about 40 cm. In women, it is 37 cm. This means that, in the case of an adult, the probe must be inserted at least until the second mark (54 cm) to ensure that it is placed in the gastric cavity. If the Levín probe is to be placed in the esophagus, it should be inserted up to 3 cm before the first mark.

This modified probe also carries a micro cannula or similar probe to the existing one (20) is inserted inside the suction tube (10) until it reaches the terminal or closed tip (12), carrying on the other end, a second adapter preventing the entry of air, however at the time when the distal holes (12) are obstructed, the negative pressure increases so that the valve opens allowing the entry of a small amount of air, decreasing the suction pressure taking off the walls of the stomach of the orifices of the probe, of a micro cannula or similar probe to the one of smaller diameter exist and placed towards the interior of the tube of aspiration, For an adequate control, at the end of the probe, a bidirectional pressure valve is placed, which is kept closed allowing the aspiration of the stomach preventing the entry of air, however, at the moment when the distal holes (12) are obstructed, the negative pressure increases so that the valve opens allowing the entry of a small amount of air, decreasing the suction pressure by peeling the walls of the stomach from the holes of the probe, from a micro cannula or similar probe to the lower existing diameter and placed inside the suction tube,

Claims (1)

NOVELTY OF THE INVENTION Having described the invention is considered a novelty and therefore claim as my property contained in the following claim.

1. Improved nosogastric tube, disposed by the combination of a transparent aspiration tube with an adapter at one end and at the proximal end of which is closed and has lateral oval or circular holes placed at an angle of 180 degrees to one another, diametrically opposite and staggered and that will be in contact with the walls of the stomach, and a second tube or micro cannula, of smaller size and that enters inside the first tube characterized because of the adapter of the probe, a bidirectional pressure valve is attached that stays closed allowing aspiration of the stomach and because of the micro cannula or probe that is inside the aspiration tube has at its end a second adapter which adapts to the second entrance of the bidirectional valve and when the distal holes are blocked and the negative pressure increases the valve opens allowing the entry of a small amount of air, decrease Using the suction pressure by removing the walls of the stomach from the holes of the probe,