WO2008068367A1

WO2008068367A1 - Method of extraction of at least one element contained in a cavity and device for performing same

Info

Publication number: WO2008068367A1
Application number: PCT/ES2007/000704
Authority: WO
Inventors: Jorge Ernesto Odon
Original assignee: Veiga, Julio Cesar
Priority date: 2006-12-01
Filing date: 2007-11-30
Publication date: 2008-06-12
Also published as: AR058534A1

Abstract

The present invention relates to a method of extraction of at least one element contained in a cavity and to a device for performing said method, preferably useful in birth assistance and the special structure of which enables a simple and non-traumatic birth stage. The method comprises the following stages: a) Inserting in said cavity at least one flexible element capable of increasing its volume as a consequence of ingress of fluid therein, and such that said element to be extracted is in surface contact with said flexible element; b) Introducing a fluid in the interior of said at least one flexible element until the surface of said at least one flexible element comes into contact with the internal walls of the container and the element to be extracted; and c) Taking the at least one flexible element and pulling the same towards the extraction mouth of the cavity until it is completely extracted. The device for carrying out said method comprises at least one flexible element capable of increasing its volume as a consequence of an increase due to internal pressure of the contained fluid.

Description

METHOD OF EXTRACTION OF AT LEAST ONE ELEMENT CONTAINED IN A CAVITY AND DEVICE TO CARRY OUT THE SAME

SCOPE

The present invention relates to a method of extracting at least one element contained in a cavity and to a device for carrying out said method, invention preferably applicable in delivery assistance and whose particular structure allows a simple and non-traumatic delivery stage , among other multiple applications that we will detail later, facilitating the task of gynecology and obstetrics professionals, and consequently of great help for women in labor.

In the innumerable uses of the present invention we find the possible application in the field of gastroenterology, in tasks such as: rectal foreign body extraction, gastric esophageal foreign body extraction, and extraction of bile duct stones; in the field of urology, in tasks such as extraction of urinary tract stones, extraction of accidentally displaced elements in medical instrumentation; in the field of vascular surgery, in tasks such as: displacement of clots and vascular prostheses or to revascularize noble territories; and finally in the field of otolaryngology, in tasks such as: extracting foreign bodies impacted in the ear or nostrils and wax extraction. PRIOR ART OF THE INVENTION AND ADVANTAGES ON THE SAME

As a particular case of analysis and a better understanding of what is proposed here, we will focus on the application of this method and device for the particular case of a delivery. That is why in the case of analysis, the method and device proposed in this application come to solve the important problems found in tools and accessories used today in births, which are used at birth and on the occasion that there is no adequate decrease in the presentation. Among the most popular are those known as "forceps", whose use has caused irreparable damage to newborns.

In addition to the "forceps", there are in the prior art a large number of extraction and delivery assistance devices, some of them are disclosed in publications such as the English patent GB1162516 (DAVIS MAURICE) of 8/27/1969 , in PCT publication WO 9803123 (JELINEK MlCHAEL) of January 29, 1998, American publication US 2004015175 (NGUYEN BICH VAN) of January 22, 2004, English publication GB 2411593 (LISTER MARTIN) of September 7, 2005 , Publication US 2004111098 (HALLEN JAN AKE) of June 10, 2004, patent US 6843251 (HUERLAND THOMAS and others) of January 18, 2005, patent US 5693058 (CAVANAGH and HOBBS CARLTON) of February 12, 1997 , PCT publication WO 9702785 (ANTSIFEROVA ELENA MIKHAILOVNA) of January 30, 1997, US patent 5569265 (ELLIOTT BYRON) of October 29, 1996, Japanese patent JP6217991 (SEODOA CHIESUTAA NIYUUAADO) of August 9, 1994, U.S. Patent US 5207687 (BERNON GILLES) of May 4, 1993, U.S. Patent 4875482 (HARIRI ROBERT et al.) Of October 24, 1989, French Patent FR 2450113 (OZIL JEAN-PIERRE and HEYMAN YVAN) of September 26, 1980 Inventor, the German patent DE 19747822 (KOCH STEPHAN and BAUCH SABINE) of July 15, 1999, and the US patent 5910146 (ALEXANDER GARY) of June 8, 1999; publications that have been analyzed in detail and that differ with the present in terms of the own method of extraction, in the structure of the device to carry out said extraction and in the problems solved by the present among which is to facilitate the expulsion period Fetal in the case of a mobile or insinuated fetus with which the shortening of the fetal expulsion period reduces the risks of acute fetal distress (for example by cord compression), using flexible materials, with adjustable volumes and pressures, and avoiding Ia Kristeller maneuver.

The appropriate decision to apply this method and device will be the decision of the responsible professional, who will evaluate the specific conditions of each delivery Ia or the techniques to be applied. The present invention has been thought of as an alternative method that, in addition to facilitating labor, provides the necessary safety and protects the integrity of the baby without any possibility of collateral damage.

It is expected that the use of the present method and device eliminates or reduces the use of the mentioned accessories such as forceps or Soup with vacuum generation, which generate both risk and elements of delivery assistance.

MAIN OBJECT OF THIS INVENTION

The device of the present invention in a preferred embodiment has been constituted by one or more flexible elements capable of forming fluid or air chambers, and although they use the same working principle and the same application technology, their shapes and designs Ergonometric can be considerably different. Said flexible elements are preferably structured as a bag of fluid or air, made of extremely flexible material, film type some microns thick, with a very high tensile strength, in hypoallergenic material and coated with a thin lubricating gel. Said element or bag will maintain, in a part thereof, a rigidity such that it will prevent said bag from increasing in volume and thereby further complicating the lack of progression of the parturient. This will mean that the bag will be able to inflate from the middle part of the baby's head (eyes and nose), and thereby avoid increasing the diameter of the head forcing further expansion. In order to facilitate the stage of extracting the baby or pulling the aforementioned bags or cameras, each of them will have a handle or grip handle.

Said bags or chambers, of antiseptic material, will be introduced by the medical professional between the bag of the fetus already with little amniotic fluid and the fetus, to then be filled with air and from there proceed to take them from their respective handles and pulling outwards in order to extract the baby, thus carrying out a simple delivery without any trauma.

In its initial state, that is, prior to the insertion of the flexible element between the bag of amniotic fluid and the baby (while the membranes are already broken), the chamber or bag will be folded and will have the ability to provide the necessary mechanical stiffness as to act as a probe or conveyor belt for the baby to the outside. In the subsequent paragraphs this particular performance of the flexible bag will be explained in detail. The end of the first bag or probe, opposite to the handle, will be the one inserted through the cervix. In the moments before the birth, and already in the stage of contractions and dilatable dilation, the bag or probe will be introduced by the gynecologist, who with the help of the ultrasound images will observe the route through the bag of amniotic fluid (between the baby and the walls of the uterus).

In a preferred embodiment, each of the flexible elements or bags will have a regulating and compensating valve for the entry of air or other very low pressure fluid, calibrated to function as an air outlet valve according to the professional's setting gynecological. As an integral part of this system, it will be feasible to use, externally, a measuring instrument and presostatic indication that will help the acting professional.

It is important to maintain a controlled internal pressure in the flexible element since the value of said pressure can increase when the flexible element inside the cavity at values that can complicate the extraction due to the increase in volume caused by this increased pressure generated. Said regulating valve will be a relief valve at this generated pressure, preventing it from rising beyond a predetermined value. A second or third flexible element or bag may be used for a better extraction of the baby, being decided by the acting professional, according to each circumstance and previous diagnosis. This second or third flexible element will allow to fill even more the gaps near the baby, which will be greater the grip or hold of the flexible elements to the baby. Like the first flexible element or bag, it will be made of the same material, folded with identical mechanical rigidity, so that it can be used as a transport probe or tape.

BRIEF DESCRIPTION PE THE FIGURES

In order to make the object of the present invention more intelligible, it has been illustrated with schematic figures, in their preferred embodiment, which assume a demonstrative example character, where:

Figures 1a, 1b, and 1c allow to see top views, in section and perspective of a first flexible element used in the part stage;

Figures 2a, 2b, and 2c allow to see top, section and perspective views of a second flexible element complementary to the flexible element plotted in Figures 1 used in the part stage; Figure 3 illustrates the application of the present method and device with a perspective view of a parturient in the first stage of placing two flexible elements;

Figure 4 allows to see a later stage than that of Figure 3, in which the flexible elements begin to be filled with air or external fluid.

Figure 5 shows the flexible elements that have already adapted their shape, occupying the existing gaps.

Figure 6 illustrates the baby emerging as a reason for pulling from the handles of the flexible elements. In the different figures, the same references correspond to identical elements of the invention.

DETAILED DESCRIPTION OF THE INVENTION

We see Figure 1a, 1 and 1c a preferred conformation of the flexible element or bag 1, which through the entry of air inside will take the form observed in the aforementioned figures. A handle or handle 2 will be shaped on it, allowing the same that the professional can carry out an adequate hold of the bag when the baby is removed. There is also observed the presence of an internal pressure compensating regulator valve 3, capable of controlling the maximum or working pressure determined by the professional. In this flexible element 1, the portion next to the handle will be flexible but without the possibility of increasing its volume, so that when positioned on the head of the baby, the minimum increase external diameter and thus avoid forcing greater dilation, something critical at the time of delivery.

In Figures 2a, 2b and 2c the flexible element 5 complementary to! of Figure 1, since it will be used together with the previous one. Their ergonomics and shapes differ from one to another since they will be located in different parts of the baby's body, where the internal voids to be filled with said flexible elements are also different.

We see in Figure 3 the introduction or insertion of the mentioned flexible elements 1 and 5, each in opposite positions of the baby, allowing to appreciate the place where said flexible elements are positioned.

Figure 4 shows how the existing internal voids begin to be filled by the fluid that enters through the regulating valves.

We see how a conical positioning begins to form above the head of the baby which will be important to maintain in order to avoid forcing a greater dilation at the time of pulling the handles of each of the flexible elements 1 and 5.

In Figure 5 it is possible to appreciate that almost all of the internal voids near the baby are occupied by the flexible elements and that will be the initial moment to proceed to the extraction of the baby. A ring-shaped element 6 will be used in order to facilitate the task of pushing with the handles by the professional. Said element will seek to position itself close to the baby's head avoiding that when pulling the handles they separate too much causing some damage to the muscles of the parturient.

Figure 6 allows to see the moment of the baby's extraction as a result of the pull from the handles. The greater volume achieved in the bags is due to the fact that when the same is extracted, the contained fluid is retained in the part that is inside the cavity, in this way said higher pressure will hold the baby better which will be brought by the same as a conveyor belt.

For the purpose of describing the methodology of application of the method of the present invention, we will now consider an example of application with application of two bags or probes, which will serve as a transport surface of the baby's body in its extraction or delivery.

As with any instrument, tool and / or accessory of help in medicine, the evaluation and diagnosis of the application of this method is of total and absolute choice of the professional, who will decide for each circumstance the work technique.

In summary, the proposed method will be carried out through the following stages:

• Introduction of the bags or probes or flexible element At this stage, the parturient will be in a normal delivery position, that is, lying on the stretcher and with the legs raised.

• Air intake or other fluid at very low pressure in the two flexible elements or bags At this stage, the acting professional will proceed to insufflate air through the valves until the distribution of the (air) bags between the spaces and interstices of the baby and the mother's womb is observed by means of an ultrasound. The reading in the instruments of presostatic measurement will assure the control of the internal pressures, which will never be superior to the pressures generated in the uterine wall.

• Traction performed by the Gynecologist accompanied by the bids of labor

The professional will proceed to collaborate with the parturient, accompanying the contractions and the bidding work with the synchronized traction from the handles of the flexible elements, cameras or probes. The baby will slide between both flexible elements or bags as brought by a conveyor belt. The valves that were initially used for the entry of insufflated air now function as pressure compensators, allowing to dislodge some of the air and maintaining the necessary pressure for the help of the "virtual bid" generated by the traction of the professional from the chambers or probes.

The method of the present invention will allow to accompany the birth of the baby supported by two air mattresses (chambers filled with air) without any risk to the child or the mother. In particular, it is of great help to the parturient so that with less effort of bids the gynecologist can accompany the removal of the baby without using mechanical rigidity tools that put any of the parts at risk. In another order, and with the corresponding technological adaptations, this ingenious system allows to be applied in large caliber pipes such as gas pipelines, pipelines and polyducts, or of medium and low caliber such as water, gas, telephone and electricity distribution networks . Undoubtedly, since the present invention is carried out in practice, modifications may be introduced in what certain construction and form details refer to, without implying departing from the fundamental principles that are clearly substantiated in the clauses that follow continuation:

Claims

1. Method of extracting at least one element contained in a cavity characterized by carrying out the steps of: a. Insert in said cavity at least one flexible element capable of increasing its volume as a result of the ingress of a fluid inside it, and in such a way that said element to be extracted is in superficial contact with the mentioned flexible element; b. Inserting a fluid inside said at least one flexible element until the surface of said at least one flexible element comes into contact with the inner walls of the container and the element to be extracted; C. Take the at least one flexible element and pull it towards the extraction mouth of the cavity until its total extraction.

2- Method of extracting at least one element contained in a cavity according to claim 1 characterized in that a. The maximum internal pressure of the fluid within said at least one flexible element is maintained at a predetermined value.

3. Method of extracting at least one element contained in a cavity according to claim 1 characterized in that a. The introduction of fluid from stage b is carried out by means of external pressure.

4. Method of extracting at least one element contained in a cavity according to claim 1 characterized in that said at least one element is a baby and said cavity is the mother's womb.

5. Device for carrying out the method of claim 1 characterized in that it is constituted by at least one flexible element capable of increasing its volume as a result of an increase by internal pressure of the contained fluid.

6. Device according to claim 6 characterized in that said flexible element has a handle or grip handle.

7. Device according to claim 6 or 7, characterized in that said flexible element has means for measuring and controlling the internal pressure thereof.

8. Device according to claim 6 characterized in that said flexible element has a first non-deformable portion Ia which serves as a fluid conduit channel and an alveolar zone between said first portion and the deformable portion in order to allow the deformable portion to be deployment hugging the item to extract.

9. Device according to claim 6 characterized in that a thin lubricating gel is distributed on the surface of the flexible element.

10. Device according to claim 6 characterized by having a ring capable of positioning around at least two flexible elements.