FR3051347A1 - CONNECTING SYSTEM FOR SPHYGMOMANOMETER - Google Patents

Abstract

The invention relates to a connector system for a sphygmomanometer comprising: an inflatable cuff adapted to be placed on the limb of a patient to be examined and / or monitored, which cuff comprises an inflatable bag, a flexible tubular cord comprising a first end and a second end, the first end being in fluid communication with the inflatable bag of the cuff, - a mano-pear formed by an inflation bulb associated with a manometer for measuring the arterial pressure, - connection means for connecting the second end of the flexible cord to the mano-pear, characterized in that: - the connection means are removable and consist of arrangements in the form of male end and female orifices, rapid assembly type, which are distributed on the mano-pear and on the second end of the tubular cord (4), so that said cord is adapted to ensure a direct connection between said mano-poo re and the cuff, - the second end of the cord has a male end and the mano-pear (MP) has a female connecting port to accommodate said male end, - the male end has several O-rings spaced longitudinally, which joints cooperate with the inner wall of the female connection port to form airtightness.

Description

CONNECTING SYSTEM FOR SPHYGMOMANOMETER

Description

Technical Field of the Invention The invention relates to a connector system for sphygmomanometer.

It concerns the technical field of medical devices, and more particularly that of devices for measuring blood pressure. State of the art

The measurement of blood pressure (or blood pressure) is one of the most common measures performed by doctors. A quick and accurate measurement is therefore beneficial for the doctor or the patient. The preferred method for performing such a measurement is the use of a blood pressure monitor (or sphygmomanometer).

A sphygmomanometer generally consists of: - an inflatable cuff adapted to be placed on the arm of a patient to examine and / or monitor, which cuff includes an inflatable pocket, - a measuring system, such as a manometer connected to the cuff, - an inflatable pear, itself connected to the cuff, for increasing the air pressure in said cuff. This pear is usually equipped with a valve to control the pressure and gradually reduce it so as to perform the measurement.

Nowadays many sphygmomanometers are used. They can be manual or automatic. Manual sphygmomanometers are used in conjunction with a stethoscope, which allows the physician to detect the recovery of heartbeat in the artery of the arm (systolic pressure). By reading at this moment the value indicated by the gauge, one obtains the measurement of the maximum arterial pressure. When the pressure of the cuff falls below the diastolic pressure, the beats become inaudible in the stethoscope, and the value provided by the manometer corresponds to the minimum arterial pressure.

There are many causes that can lead to poor blood pressure measurement. The choice of sphygmomanometer used is therefore essential for the diagnosis is not wrong.

Different types of sphygmomanometers have been developed, mainly the mano-cuff and the mano-pear.

In a mano-cuff, the manometer is directly attached to the cuff, making the reading of the blood pressure value easier and the system less heavy to wear, a not insignificant quality for a doctor performing a large number of measurements per day. .

In a mano-pear, the manometer is associated with the inflation bulb, a flexible tubular cord connecting said mano-pear to said cuff to ensure the inflation of the latter. This type of armband is easier to install than a mano-cuff. Also, the doctor can promote the use of a mano-pear for patients for whom the artery of the arm is difficult to detect. The ergonomics of the mano-pears and / or the display system of the manometer (needle dial, digital display, ...) can change from one brand to another or according to the models of mano-pears. Also, the dimensions of the cuff should be proportional to the morphology of the patient's limb, and in particular to its circumference. A too narrow cuff will overestimate the blood pressure and a too wide cuff will underestimate it. In these two cases, the value of the arterial pressure obtained is not representative and does not allow an exact diagnosis to be made. The choice of the size of the cuff used is therefore essential for the diagnosis is not wrong. It therefore appears advantageous that a doctor can easily change the mano-pear and / or cuff according to his needs.

An object of the invention is to provide a connective system for sphygmomanometer that allows quick change of mano-pear and / or cuff.

Another object of the invention is to provide a connector system for sphygmomanometer whose design is simple and can be expensive and easy to use.

Disclosure of the invention.

The solution proposed by the invention is a connector system for sphygmomanometer comprising: - an inflatable cuff adapted to be placed on the limb of a patient to examine and / or monitor, which cuff has an inflatable pocket, - a tubular cord flexible having a first end and a second end, the first end being in fluid communication with the inflatable bag of the cuff, - a mano-pear formed by an inflation bulb associated with a manometer for measuring blood pressure. connecting means for connecting the second end of the flexible cord to the mano-pear.

This system is remarkable in that: the connection means are removable and consist of arrangements in the form of male end and female orifices, rapid assembly type, which are distributed on the mano-pear and on the second end of the tubular cord , so that said cord is adapted to ensure a direct connection between said mano-pear and the cuff, - the second end of the cord comprises a male end and the mano-pear has a female connection opening for receiving said male end, - the male end has a plurality of longitudinally spaced O-rings, which seals cooperate with the inner wall of the female connection port to form airtightness.

Such a connector system makes it possible to have a sphygmomanometer with an interchangeable configuration. The doctor can now easily change the mano-pear while using the same cuff, or vice versa. Other advantageous features of the invention are listed below. Each of these characteristics may be considered alone or in combination with the remarkable features defined above, and may be subject, where applicable, to one or more divisional patent applications: - The entry of the female orifice of connection may comprise a sleeve-shaped liner, said sleeve cooperating with the O-rings to provide airtightness between the male member and said female orifice. At least two of the O-rings are preferably made of different materials. Advantageously, joints located at the proximal end of the spigot are made of rubber and a seal located at the distal end of said spigot is made of silicone. - The connecting means of the second end of the tubular cord preferably comprises an outer male end and an inner male end separated by a flange, said inner end being secured to said bead, which inner end has at least one gripping collar cooperating with the inner wall of said tubular cord. - The collar is advantageously disposed outside the cord and abuts against the respective second end. - The male end is advantageously cylinder-shaped. - The outer diameter of the cylinder-shaped male end is preferably adjusted to the inner diameter of the cylindrical sleeve. - The male shaped cylinder end advantageously has an outer diameter of between 0.15 cm and 2 cm, and a length of between 0.5 cm and 2 cm. - The first end of the cord may comprise a male end and the cuff comprise a female connection port for receiving said male end.

Description of the figures. Other advantages and characteristics of the invention will appear better on reading the description of a preferred embodiment which follows, with reference to the accompanying drawings, made by way of indicative and non-limiting examples and in which: FIG. 1a is a schematic representation of a system according to the invention installed on a patient's arm; FIG. 1b is a schematic representation of a system according to the invention, in a variant embodiment, installed on the FIG. 2 is a diagrammatic representation of a connecting means of the tubular cord to the cuff of the system of FIG. 1b; FIG. 3 is a diagrammatic representation of the two ends of the tubular cord of FIGS. 2, each of the ends being provided with connection means; FIG. 4 is a schematic representation of a system according to the invention, in a configuration where the cuff is connected to a mano-pear, - Figure 5 is a sectional representation of a connection means consisting of a configuration in the form of a male end and a female orifice, - Figure 6 is a FIG. 7 is a perspective view illustrating the connection of the second end of the cord in sectional view of a connecting means consisting of a male-shaped arrangement and a female orifice in a variant embodiment; Figure 8 is a perspective view of an interface piece used in the invention; Figure 9 is a sectional view of the interface piece of Figure 8; FIG. 10 is a sectional view of an alternative embodiment of the interface piece of FIG. 8.

Preferred embodiments of the invention

With reference to FIGS. 1a and 1b, the system which is the subject of the invention comprises the following elements: an inflatable cuff 2 adapted to be placed on the arm of a patient to be examined and / or monitored, which cuff comprises an inflatable pocket an inflating means 3, such as an inflation bulb, associated with a flexible tubular cord 4 for inflation of the cuff 2, a manometer 5 for measuring the systolic and diastolic blood pressure of the patient, which manometer is associated with with inflation pear 3 to form a mano-pear MP.

In Figures 1a and 1b, the cuff 2 is installed around the arm of a patient, at the artery, so as to perform different arterial blood pressure measurements. The flexible cord 4 provides air for inflating the cuff 2. When inflated, the cuff 2 crushes the artery on which it is placed. By listening, with the help of a stethoscope, the noise emitted by the blood as it passes through the artery, two blood pressure values are measured. Thus, when the cuff 2 is inflated enough to compress the artery, the blood can not pass and the doctor does not perceive any noise. The cuff 2 then deflates gradually, allowing to perceive the sound of the heart beat defining the systolic blood pressure (maximum pressure). This noise amplifies and disappears, the measured pressure then corresponding to the diastolic blood pressure (minimum pressure).

The cuff 2 can be of different sizes so as to adapt to patients with different morphologies and arm diameter. It has for example a length of between 40 cm and 100 cm, a width that can vary between 5 cm and 30 cm. The cuff 2 is manufactured in a conventional manner and has an inflatable pocket. It may be manufactured in one piece (FIG. 9), the double wall 23, 24 of which delimits the inflatable bag 25, and may be made of an impermeable flexible plastic material such as a polymer or an elastomer, for example polyethylene or else polyurethane. Preferably, it is made of a thermoplastic material. The cuff 2 may also be formed by two walls 23, 24 of non-impervious textile, such as cotton, which walls define a pocket in which the inflatable bag 25 is housed (FIG. 10), which bag is made of a flexible plastic material waterproof such as a polymer or an elastomer.

An inflation means 3 makes it possible to inject air into the inflatable bag 25 of the cuff 2 in order to inflate it. As illustrated in Figures 1a, 1b, 4 and 7, this inflation means 3 is preferably in the form of an inflation bulb, which bulb is of the type usually used in the sphygmomanometer systems known from the prior art. It is sufficient for the doctor to exercise, by hand, successive pressures on the bulb 3 to inject air into the cord 4 and inflate the cuff. The bulb 3 is provided with a member 30 for controlling a valve or a valve for venting the inflatable bag 25 of the cuff 2. The actuation of this member 30 makes it possible in particular to gradually reduce the inflated cuff pressure 2 for the determination of systolic pressures. This member 30 may be in the form of a wheel or a push button.

The manometer 5 illustrated in Figures 1a and 1b has a needle 50 cooperating with a graduation 52 of a reading dial, to indicate the arterial pressure. The manometer 5 may, however, be provided with a digital display screen.

The tubular cord 4 is made of a flexible material, such as for example a polyethylene, a polystyrene, or any other plastic material suitable for the skilled person. It has a diameter ranging from 0.2 cm to 2 cm, and a length between 20 cm and 2 m. It has a first end 4a and a second end 4b. The first end 4a is in fluid communication with the inflatable pocket 25 of the cuff 2.

Figure 4 shows a schematic configuration where the pressure gauge 5 is associated with the inflation bulb 3 to form a mano-pear MP. This unique device MP is known to those skilled in the art. The mano-pear MP is connected to the cuff 2 by means of the tubular cord 4 allowing air to flow from the bulb 3 to the inside of the pocket of said cuff.

According to the invention, the system comprises removable connection means 7 consisting of arrangements in the form of male end caps and female orifices, of the rapid assembly type.

In FIGS. 1a, 1b, 3 and 4, the tubular cord 4 comprises connecting means 7 located on at least the second end 4b and preferably on each of its ends 4a, 4b. These connection means 7 make it possible in particular to connect the cord 4 to the mano-pear MP and possibly to the cuff 2.

In Figure 3, the cord 4 has a male end 71 at each end 4a, 4b. These male tips 71 are adapted to be inserted into female complementary connection ports 6 described further in the description and which are located on the mano-pear MP and possibly on the cuff 2.

Referring more particularly to Figures 5 and 6, the connecting means 7 is formed of the outer male end 71 and an inner male end 72, these two ends being connected by a collar 75. To simplify its design, this connecting means 7 is advantageously manufactured in one piece. The end pieces 71, 72 and the flange 75 are made of a rigid material, such as for example a plastic material or a metal. The end pieces 71, 72 and the flange 75 are pierced axially so as to form a duct 70 allowing the circulation of air. The outer male end 71 is preferably in the form of a cylinder on which is installed a seal structure 73. This cylinder has for example an outer diameter of between 0.15 cm and 2 cm, and a length for example between 0.5 cm and 2 cm.

To ensure optimum airtightness with the female connection ports 6, a seal structure 73 is installed at the outer male end 71. Advantageously, at least one O-ring seal 73a, and preferably at least one three O-rings 73a, 73b, 73c are arranged around the cylinder of the nozzle 71. These O-rings 73a, 73b, 73c are spaced longitudinally, for example from a distance of 0.2 cm to 0.5 mm.

The O-rings 73a, 73b, 73c are preferably made of rubber but they can also be made of another material, such as for example silicone. When the outer male end 71 has several O-rings 73a, 73b, 73c, these can be made of identical materials or different materials. In the example of FIGS. 5 and 6, the seals 73a and 73b situated at the proximal end (or inlet end) 71p of the end piece 71 may be made of rubber and the seal 73c situated at the level of the distal end 71d may be made of silicone. The Applicant has found that such a configuration offers the best results in terms of airtightness. The inner male end piece 72 is preferably in the form of a cylinder similar to that forming the outer male element 71. This cylinder has for example a diameter between 0.15 cm and 2 cm, and a length for example, may vary from 0.5 cm to 2 cm. The inner male end piece 72 is adapted to fit tightly into the respective end 4a, 4b of the tubular cord 4 so that the connecting means 7 is secured to the latter. This internal male end piece 72 comprises at least one attachment collar 74 cooperating with the inner wall of the cord 4. This attachment collar 74 makes it possible to forcefully insert it into the tubular cord 4 and thus to ensure the tightness to the air between the connection means 7 and said cord. Advantageously, at least two collars 74, and preferably at least four attachment collars 74, are arranged around the cylinder of the nozzle 2. In practice, the external diameter of the collars 74 is slightly greater than the internal diameter of the cord 4 (by example of 1 mm) to ensure the insertion force of the inner male end 72 and a plastic deformation of the inner wall of the bead 4, which deformation provides airtightness.

The flange 75 is disposed outside the bead 4 and bears against the respective end 4a, 4b of the latter. The flange 75 is for example in the form of a cylinder whose outer diameter corresponds to the outer diameter of the cord 4, its length being for example between 0.5 cm and 1 cm.

The female connection ports 6 are located on the mano-pear MP and possibly on the cuff 2.

In FIG. 5, the inlet of the female orifice 6 comprises a cylindrical sleeve-shaped liner 61 adapted to the joint structure 73. More particularly, this cylindrical sleeve 61 co-operates with the Joints structure 73 to ensure a seal at the optimum air between a male element 71 and the corresponding female connection port 6.

The cylindrical sleeve 61 is made of a rigid material, such as a plastic material or a metal. The cylinder of the outer male tips 71 has an outer diameter fitted to the internal diameter of the cylindrical sleeve 61. By "adjusted" is meant that the inner diameter of the sleeve 61 is substantially equal to the outer diameter of the cylinder forming the outer male end 71, and preferably slightly greater (for example 0.5 mm) to prevent loosening of the seals 73 during the insertion of said tip 71. The sleeve 61 has for example an internal diameter of between 0.15 cm and 2 cm, and a length corresponding to that of the cylinder forming the outer male end 71. Thus, when the outer male end 71 is inserted axially into the female orifice 6, the O-rings 73a, 73b, 73c bear against the inner surface of the sleeve cylindrical 61, ensuring in fact a sealed connection between said tip 71 and said orifice 6.

The outer diameter of the sleeve 61 is such that it is inserted into force in the corresponding female orifice 6, thus ensuring a satisfactory airtightness between said orifice and said sleeve and an effective holding of the latter. An adhesive or glue may optionally be added between the inner surface of the orifice 6 and the outer surface of the sleeve 61 so as to further secure the holding in position.

In Figure 6, the inlet of the female connection port 6 is devoid of lining. The seal structure 73 cooperates directly with the inner wall of the bore forming the female connection port 6 to ensure airtightness.

Figure la illustrates the case where the first end 4a of the tubular cord 4 is secured to the cuff 2, this cord providing a direct connection between the mano-pear MP and said cuff. The first end 4a may for example be directly welded to the inflatable bag of the cuff 2, without the possibility of disconnection.

Figures 1b and 2 illustrate the case where the first end 4a of the tubular cord 4 is detachably connected to the cuff 2, this cord providing a direct connection between the mano-pear MP and said cuff (Figure 4). In this case, the female orifice 6 of the cuff 2 is arranged in a protuberance 212a, 212b, said female orifice being in fluid communication with the inflatable bag of said cuff 2. The female orifice 6 opens into a conduit 60. This female orifice 6 may optionally be provided with the cylindrical liner sleeve 61 described above, or be devoid of this sleeve. In the latter case, the cylindrical inner wall of the female orifice 6 is directly adapted to the outer male end 71, and more particularly to its joint structure.

As it appears in FIG. 4, the inlet of the female orifice 6 of the cuff 2 is preferably arranged in such a way that its axis Y is parallel to the surface of the interface piece 21a, 21b, which axis Y is perpendicular to the longitudinal axis X of said cuff 2. The Applicant has found that this orientation allows easier connection of the cord 4.

The protuberance 212a, 212b is shaped protruding on an interface piece 21a, 21b, which interface piece acts as an interface between the inflatable bag 25 and the female orifice 6 of the cuff 2. The protuberance 212a, 212b is advantageously made of a rigid material, plastic or metal. It could, however, be made of a semi-rigid or flexible plastic material.

Referring to Figure 8, the interface piece 21a, 21b has a rear face 210a, 210b in contact with the cuff 2 and a front face 211a, 211b on which protrudes protrudes 212a, 212b. In Figure 8, it has the shape of a rhombus whose sides have for example a length of between 2 cm and 10 cm. Its thickness can be between 1 mm and 20 mm.

FIG. 9 illustrates the case where the cuff 2 consists of a single piece whose double wall 23, 24 defines the inflatable bag 25. In this case, the protuberance 212a and the interface piece 21a form a single piece, obtained for example by molding or plastic injection. This one-piece piece is preferably made of a thermoplastic material, rigid or semi-rigid, so as to facilitate welding, but it can be made of another rigid material such as a plastic or a metal. The rear face 210a of the interface piece 21a is directly secured to one of the wall walls 23 of the cuff 2, for example by a welding process or by gluing. The conduit 60 opens at the rear face 210a of the interface piece 21a, which conduit is positioned opposite an opening 230 formed on the wall 23 so as to ensure fluid communication between the orifice 6 and the inflatable pocket 25.

Figure 10 illustrates the case where the cuff 2 is formed by two non-impermeable walls 23, 24 delimiting a pocket in which is housed the impervious pocket 25 impervious. In this case, the protuberance 212b and the interface piece 21b can be two separate pieces. The protuberance 212b is preferably made of a thermoplastic material, rigid or semi-rigid, or in another rigid material such as a plastic or a metal. The interface piece 21b may be made of a flexible material such as a thermoplastic, or leather or a rigid material such as a plastic or a metal. The rear face 210b of the interface piece 21b is secured to one of the walls 23 of the cuff 2, for example by gluing or sewing. The protuberance 212b is secured to the front face 211b of the interface piece 21b, for example by gluing, sewing or by means of rivets. The conduit 60 opens at the front face 211b of the interface piece 21b in which is arranged an opening, which opening is positioned vis-à-vis another opening made on the wall 23. The inflatable pocket 25 is provided with a tip 250 which passes through these two openings to be housed in the conduit 60. This provides a fluid communication between the orifice 6 and the pocket 25.

According to an advantageous characteristic of the invention, a relief arrangement 213a, 213b, in the form of a sole, is installed in front of the female orifice 6 and in the Y axis of the latter. This sole 213a, 213b can guide in position the outer end 71 of the cord 4 (Figure 2). This sole 213a, 213b also stiffens and reinforces the interface piece 21a, 21b. Its length is for example between 1 cm and 5 cm, its width preferably corresponds to that of the protuberance 212a, 212b, and its thickness is for example between 2 mm and 1 cm. This sole 213a, 213b may have a concavity in the Y axis so as to facilitate the guiding of the tip 71.

The sole 213a, 213b and the protuberance 212a, 212b may be made in a single piece or in two separate pieces. They can be an integral part of the interface part 21a, 21b and be made at the time of manufacture. The sole 213a, 213b can also be attached to the interface piece 21a, 21b subsequently by welding, gluing, riveting, or sewing. The material used for the sole 213a, 213b is preferably the same as that of the protuberance 212a, 212b. However, it can be made of another material such as plastic, metal, leather, etc.

In FIG. 7, the mano-pear MP also has a female connection port 6. This orifice is arranged in the lateral edge 500 of the mano-pear MP, perpendicular to the median plane P of said mano-pear. The use of the system object of the invention will now be described in detail. The doctor has at his disposal: the cuff 2, a cord 4 and the mano-pear MP.

When the doctor needs to use a mano-pear, it is sufficient for him to place a cuff 2 of suitable size around the patient's arm. It then connects one of the male tips 71 of the cord 4 in the female connection port 6 of the cuff 2 (Figure 1b) if the first end 4a of the latter is not already secured to said cuff (Figure la). The male end 71 of the second end 4b of the cord 4 is connected in the female connection port 6 of the mano-pear MP of its choice, for example with a needle gauge 5 and / or a certain model or mark. .

When the doctor needs to use another mano-pear (for example with a manometer 5 with digital display and / or another model or mark) he simply disconnects the male end 71 of the second end 4b out of the female connection port 6 of the mano-pear MP .. It then reconnects this male end in the female connection port 6 of another mano-pear MP.

The doctor can also easily use another 2 cuff, while retaining his mano-pear MP.

If the first end 4a of the cord 4 is secured to the cuff 2 to be changed (configuration of Figure 1a), it is sufficient to disconnect the male end 71 of the second end 4b out of the female connection port 6 of the mano pear MP. It then reconnects the male end 71 of the second end 4b of the cord 4 attached to another cuff 2, of a more suitable size, in the female connection port 6 of the mano-pear MP.

If the first end 4a of the cord 4 is removably connected to the cuff 2 to change (configuration of Figure 1b), it is sufficient to disconnect the male end 71 of the first end 4a out of the female connection port 6 said cuff. It then reconnects this male end in the female connection port 6 of another cuff 2 of more suitable size. The male end 71 of the second end 4b of the cord 4 remains connected in the female connection port 6 of the mano-pear MP. The arrangement of the various elements and / or means and / or steps of the invention, in the embodiments described above, should not be understood as requiring such an arrangement in all implementations. In any case, it will be understood that various modifications may be made to these elements and / or means and / or steps, without departing from the spirit and scope of the invention. In particular: - The cuff 2 can be installed around a suitable limb of the patient such as: arm, wrist, leg, etc. - Inflation means 3 more complex than a pear can be used, such as a piston pump or a gear pump. - The inner end 72, the outer end 71 and the flange 75 can be manufactured separately and assembled together later through a welding or gluing process for example. - The interface piece 21a, 21b is not necessarily diamond-shaped, it can be of any shape, such as a square, a circle, an ellipse, etc. - The section of the component cylinder the outer male end 71, 51 is not necessarily circular, it may for example be square, rectangular or elliptical, - The cuff 2 does not necessarily have interface piece 21a, 21b. The female orifice 6 may, for example, be arranged directly in the inflatable bag 25. The protuberance 212a, 212b may also be attached directly to the inflatable bag 25.

Claims (10)

claims 1. Sphygmomanometer connector system comprising: - an inflatable cuff (2) adapted to be placed on the member of a patient to examine and / or monitor, which cuff includes an inflatable pocket (25), - a flexible tubular cord (4) having a first end (4a) and a second end (4b), the first end (4a) being in fluid communication with the inflatable pocket (25) of the cuff (2), - a mano-pear (MP) formed by an inflation bulb (3) associated with a pressure gauge (5) for measuring the arterial pressure, - connection means (7) for connecting the second end (4b) of the flexible cord (4) to the mano-pear (MP) characterized in that: - the connection means (7) are removable and consist of arrangements in the form of male end pieces (71) and female orifices (6), of the rapid assembly type, which are distributed on the mano-pear (MP) and on the second end (4b) of the tubular cord (4), so that led it cord is adapted to ensure a direct connection between said mano-pear (MP) and the cuff (2), - the second end (4b) of the cord (4) comprises a male end (71) and the mano-pear (MP) ) has a female connection port (6) to receive said male end, - the male end (71) has a plurality of longitudinally spaced O-rings (73), which seals cooperate with the inner wall of the female connection port (6). ) to form airtightness. 2. System according to claim 1, characterized in that the inlet of the female connection port (6) comprises a sleeve-shaped liner (61), said sleeve cooperating with the O-rings (73) to ensure a airtightness between the male element (71) and said female orifice. 3. System according to one of the preceding claims, characterized in that at least two of the O-rings (73) are made of different materials. 4. System according to claim 3, characterized in that seals (73a, 73b) located at the proximal end (71 p) of the male end (71) are made of rubber and a seal (73c) located at the level of the distal end (71 d) of said tip is made of silicone. 5. System according to one of claims 1 to 10, characterized in that the connecting means (7) of the second end (4b) of the tubular cord (4) comprises an outer male end (71) and an inner male end (72) separated by a flange (75), said inner end (72) being secured to said bead (4), which inner end (72) comprises at least one gripping collar (74) cooperating with the inner wall of said bead (72). tubular (4). 6. System according to claim 5, characterized in that the flange (75) is disposed outside the bead (4) and abuts against the respective second end (4b). 7. System according to one of the preceding claims, characterized in that the male end (71) is in the form of a cylinder. 8. System according to claim 7 taken in combination with claim 2, characterized in that the outer diameter of the cylinder-shaped male end (71) is adjusted to the inner diameter of the cylindrical sleeve (61). 9. System according to one of claims 7 or 8, characterized in that the male end (71) in the form of a cylinder has an outer diameter of between 0.15 cm and 2 cm, and a length between 0.5 cm and 2 cm. 10. System according to one of the preceding claims, characterized in that the first end (4a) of the cord (4) comprises a male end (71) and the cuff (2) has a female connection port (6) to accommodate said male end.