FR2964571A1 - Device for securing medical usage needle in catheter, has upper base integrated to medical usage needle, and lower guiding base with traversing opening for needle, where device is operated manually or by mechanical unit - Google Patents

Abstract

The device has an upper base (1) integrated to a medical usage needle, where the device is operated manually or by a mechanical unit e.g. return spring, and a lower guiding base (2) with a traversing opening (4) for the needle. An upper part of the lower guiding base has a secure zone (5) for securing an end of the needle. A flexible or telescopic holding unit (3) is integrated respectively to each end of the bases. The secure zone has a wall surrounding completely a needle insertion opening.

Description

All healthcare personnel worldwide know the risks they face when removing a puncture, injection, or catheter with a delivery device, namely a medical needle.

Indeed, whether for a temporary or long-term medical treatment, the fact of placing an injection device, intramuscularly, intravenously or otherwise, requires the use of a needle adapted in its shape and length that whether or not it has an internal or external catheter.

The risk incurred by the nursing staff who use it is important when the needle is removed from the human body until it is placed in a waste container provided for this purpose.

There may be a rebound of the needle at the time of removal of the needle, (a phenomenon well known in chemotherapy treatment with Huber bevel needles), or simply injury by simply touching the tip of the needle when a gesture that is sometimes very delicate with patients very disturbed by the pain they endure.

But as there is no need to change the techniques, or the many connections usually used in medical care it seems advisable to provide that this housing can also be provided with a cone base American or American type lock Luer Lock " this will allow the device on one side, male, to be locked, if necessary, on a catheter, as a simple needle is currently there and on the other, provided with a female base type "Luer Lock », Conventional, intended to receive any other complementary fitting or accessory compatible with this type of base

That is why we propose a device adaptable to all kinds of needles or introducing mandrels for medical use which will completely neutralize the bevel or the traumatic part of the accessory used and this as soon as the exit of the device out of the patient. In order for the tip of the needle to be rendered inoperative as soon as the patient, catheter or other needle leaves the device, the device will be provided with several essential elements. Namely: A device having the necessary and sufficient qualities to obstruct the orifice where was the needle before it was removed

A device, provided with a secure housing, limiting the removal of the needle from the device, and proportional to the length thereof, so that the tip of the latter never leaves its secure housing.

A device limiting the movement of the needle to prevent it from leaving its secure housing. - This security device will ensure that the needle or trocar, can once again in this secure space, find the original path that is to say out of the secure perimeter because of the closure of its path initial. {6b, 6c Figure 2}

The invention relates to a device for securing a needle for medical use comprising: a first upper base secured to the needle, {l FIG. 1} equipped, like all the needles or catheter, with a conventional adapter cone of Female "Luer Lock" type, or even female / male / (the Figurel) a second lower guide base equipped or not with a conventional Luer Lock type adapter cone Male, or even Female / Male {2 Figure 1} , with a through-orifice for the needle, {4 Figure 1} base including in its inner part a securing zone of the end of the needle, {5 Figure 1} flexible retaining means secured respectively to each end of the first and second bases, {3 Figure 1}, of a predetermined length in extension {3a Figurei}, preventing the end of the needle from leaving the so-called secure zone {5 Figure 1} by a predetermined limitation of the distance from they base (H1 Figure 1) according to the length of the needle {H2 Figure 1} and the height of the securing zone {5Figure 1} These two bases having a respective mobility relative to each other , manually controlled {1 Figurel} or automatic {9,10 Figure 8}

According to particular embodiments:

- The securing zone comprises a wall of a predetermined height {H1 Figure 1} completely surrounding the insertion hole of the needle internally defining a securing zone, associated with the lower part of the second base.

said wall is a cavity completely surrounding the insertion orifice of the needle centrally, or eccentrically, defining internally a securing zone, associated with the upper part of the second base;

said wall of the security zone can also be represented by the interior of the American cone which equips certain accessories such as plugs and whose male cone would then be pierced to allow the needle to pass, but would, by locking it, perfect adaptation of the system to a catheter or other medical accessory necessary to the patient {5a Figure 1}, the wall of the security zone can be integrated in the volume of the lower base while retaining inside this zone the device described in the various options (elbow tube, spring, conical tube compressed element etc {6a, Figure 1, 6b, 6c Figure 2, 6d, 6e Figure 3 6f, 6fa, 6fb, 6fc Figure 4} and which integrates the zone of securing while possibly allowing the assembly to be locked on another flexible infusion element, for example, by means of the standard thread in the Luer Lock {2b Figure 1} The safety zone n comprises walls integrated in a conformation of a female Luer Lock type connector.

10 It is therefore the device for securing a needle for medical use whose security zone comprises a wall of a predetermined height completely surrounding the insertion hole of the needle internally defining a security zone, 5,5a Figure 1} associated with the upper part of the second base. Regardless of the type of wall retained, the device comprises, in the vicinity of the through orifice, securing means limiting or preventing re-insertion of the needle {6a Figure 1} into the second base after a first use insertion of the needle. This device for securing a needle for medical use therefore comprises, in the vicinity of the through-orifice (6a), securing means limiting or preventing reinsertion of the needle into the second base after a first use insertion of the needle. During manufacture, the needle being put in place through the safety device, whether or not it is provided with an additional "Luer Lock", after implantation, removing it from the patient will cause that It will therefore be extracted from the first protection stage, namely an accessory internal to the device, emerging inside the secure device. This securing device will therefore be designed in such a way that the shutter element has a slight overshoot inside the device. the secure space {2a, 6a Figure 1,} so that the needle does not easily return to its original path the securing means limiting or preventing reinsertion of the needle 35 comprise a protruding body (6, 6a, Figure 1, 6b, 6c Figure 2} with a through hole associated with the insertion port {6b Figure 2}, the protruding body possibly having a conical tapered up profile. {6c Figure 2}

40 Similarly, this function can be obtained by a tube or a piece of another geometric shape, of elastic material, laid flat in the bottom of the housing and which would be deformed oval way all the time of the placing in stock or in place of the needle in the patient; once the needle out of its context of use, so in the surface 45 of securing, it would be rejected by the piece that would ask only to return to its original shape and therefore could not allow the needle to return in the initial penetration port. In fact, the safety device could be in the form of a piece of flexible tube, rush or olive material which, compressed laterally during the entire insertion of the needle into its original element, would resume its initial shape as soon as it it would have been freed from the compression caused by the needle or the mandrel and would thus obstruct the orifice through which the needle or mandrel had passed. {6a Figure 6}.

Likewise, it is quite possible to provide for a shell of silicone-type flexible material to be used in the device, for the needle to be put in place through the device and for the needle withdrawal maneuver to be carried out. , the orifice will naturally close, this shell can also be conically shaped, so if the needle wanted to return to its former home, on the one hand it will not find the original orifice 15 but on the other hand, it will inevitably be deflected by the conical shape of the shell. {6a Figure 2} - Securing device whose shutter element is composed of a flexible material, which will allow, when the needle is removed, to completely obstruct the old passage thereof {6a Figure 2} if this one came to represent itself before the old orifice. 20

It may therefore be agreed that the securing means limiting or preventing re-insertion of the needle would comprise a shaped elastic body of spherical or oval type or of another geometrical shape 25 masking, in the initial state, the insertion orifice. , and withdrawing according to a predetermined constraint for the passage of the needle {6a Figure 1} {6a Figure 6

We can very well imagine also, a small tube, calibrated or not to the diameter of the needle and whose internal overtaking in the secure space, that if the needle wanted to return to the tube, so in its initial position, it would first have to go back up enough to overcome the obstacle represented by this overtaking. {6b Figure 2} 35 One can very well also consider that this small calibrated tube ends, in its upper part by a so-called whistle or conical closure which would make the difficulty even greater. This securing device will therefore be made in such a way that the shutter element of the old port 40 for passage of the needle terminates, if it is a tube, by a conical or whistle closure {6c Figure 2}

the securing means limiting or preventing re-insertion of the needle would comprise a shaped elastic body of the masking type 45 in the initial state the insertion orifice, {2a Figure 1} and withdrawing according to a predetermined constraint for the passage of the needle {6b Figure 2} or else in a variant version the means for securing a needle for medical use comprise a flexible tubular element where the needle is inserted, the tube being preformed bent in the initial state to prevent re-insertion of the needle {6d, 6e Figure 3} It is also possible to provide that a small central passage tube of the needle is composed of a sufficiently flexible spring so that, once the needle is withdrawn , it naturally subside and thus hide the original input of said tube {6f, 6fa Figure4} It will therefore be a safety device that can be a spring tube in which is passed the needle or the chuck but sufficiently flexible, or preformed, so that the withdrawal of the needle or mandrel, said spring, would naturally sag and thus mask the entrance of said tube

- Similarly in another conformation a small spring, with lateral thrust, {6fb Figure4} could come to deflect the tip of the needle, once this one left its passage and entered the zone of safety this deviation would come to provoke a lateralization of the needle {6fc Figure 4} from which it is impossible to find its original path This is then a safety device that can be in the form of a pin-like spring, {6g Figure 5} or spiral {6h Figure 5} arranged laterally with respect to the needle or mandrel and which, at the time of withdrawal of the needle would thus obstruct the orifice by or had been passed the needle or mandrel {6ga, 6ha Figure 5} - the securing means limiting or avoiding re-insertion of the needle could comprise a spring in which the needle is inserted, {6f Figure 4} the spring being preformed bent in the initial state {6f Figure 4} to prevent reinsertion of the needle. Or they could include a spring in which the needle is inserted, the spring being of such flexibility in the initial state, that it will bend alone, if only by gravity alone, {6fa2 Figure 4} by blocking the passage hole to prevent re-insertion of the needle

In another version the securing means limiting or avoiding re-insertion of the needle could comprise an elastic tongue obstructing the insertion of the needle in the initial state, the tongue moving under stress to clear the through hole including either by pivoting {6g, 6ga Figure 5} or by winding elastically. {6h, 6ha Figure 5} But for the result to be obtained it appears essential that the retaining device namely cables, son, flexible, an arrangement thereof or even a flexible sheath, are of consistent length, proportional to the length of the needle so that when it is withdrawn, it can not leave the secure space, so that they are deployed at their maximum length provided for this purpose.

That is to say that retaining elements, such as son or cables, {3 Figure 1} or sheath {7 Figure 7} flexible by their fixation and in the upper part and in the lower part of the device comes to limit {3a Figure the rise of the needle in its secure space. {7aFigure 7, 5 Figure 1}

It can therefore be said that: the flexible retaining means secured between the first base and the second base comprise at least one non-elastic flexible wire {3 Figure 1} or else an arrangement of non-elastic flexible wires regularly distributed with respect to the central axis formed by the two bases. {3a Figure 2, 3b Figure 3} This device for securing a needle for medical use therefore consists in that the flexible retaining means secured between the first base and the second base comprise an arrangement. non-elastic flexible yarns regularly distributed with respect to the central axis formed by the two bases. {3a Figure 2} See an arrangement of twisted flexible elements {7 Figure 7} defining a stable cylindrical structure that is not extensible. This device for securing a needle for medical use could also consist of flexible retaining means secured between the first base and the second base comprise an arrangement of twisted flexible elements defining a hollow cylindrical structure stable extensible. {7 Figure} so as to limit the rise of the needle in its secure space. {7aFigure 7}

In another embodiment, the flexible elements may be replaced by a telescopic assembly of surrounding nestable elements and the lower part of the secure element and the mobile upper element of the device, so as to limit the movement of the needle or the trocar so that it does not come out of the secure volume in which its evolution was planned. {Figure 8} One can therefore flexible retaining means secured between the first base and the second base comprise a telescopic arrangement of interlocking elements with stops, {Figure 8} surrounding the lower part of the secure element and the movable upper element of the device so as to limit the movement of the needle so that it does not exit the security zone for which its evolution was planned.

It would seem desirable that the flexible retaining means secured between the first base and the second base can either be handled manually during the period of withdrawal of the needle or can be mechanically manipulated such as the thrust, controlled by an unlocking device. , 10a Figure 8} of a spring, {9,9a Figure 8} to automatically obtain the removal of the needle and its safety.

The device comprises a thrust spring {9,9a Figure 8} with a manually controlled release device {10,10a Figure 8} located between the two bases to ensure the removal of the two bases for securing the needle in the security zone.

Finally, and in the case for example of a simple intravenous bite or a temporarily placed catheter, the securing device of the needle for medical use could have a peculiarity is that the lower base could be with a external geometry, truncated, and having a sloping side {11 Figure 9), so as not to be traumatic at the level of the skin {12 Figure 9} The lower base comprises an external geometry, truncated, and having at least one Pan at an angle {11 Figure 9} so as not to be traumatic in contact with the skin {12 Figure9} when using the needle in the IV position, for example.

Claims (1)

CLAIMS1 / Device for securing a needle for medical use {h2 Figure 1} characterized in that it comprises: a first upper base {1 Figurel} secured to the needle, a second lower base guide (2 Figures) with a through hole {4 Figurel} for the needle having on its upper part a securing zone of the end of the needle {5 Figures}, at least one flexible retaining means {3 Figure 1} or 10 telescopic, secured respectively at each end of the first and second bases, of a predetermined length in extension, preventing the end of the needle from leaving the securing zone by a predetermined limitation of the distance between the two bases as a function of the length of the the needle {h2 Figurel} and the height of the security zone. 15 {H1 Figure 1} and that the handling of the safety device is either manual or by mechanical means such as a return spring. {Figure 8} 2 / device for securing a needle for medical use according to claim 1 characterized in that the securing zone comprises a wall of a predetermined height completely surrounding the insertion hole of the needle defining internally a security zone, {5 Figure 1} associated with the upper part of the second base. 3 / device for securing a needle for medical use according to claim 1 or 2 characterized in that it comprises in the vicinity of the through hole {4 Figure 1} securing means {2a, 6a Figure 1} limiting or avoiding re-insertion of the needle into the second base after a first insertion of use of the needle. 4 / Device for securing a needle for medical use according to claim 3, characterized in that the securing means limiting or preventing reinsertion of the needle comprises a protruding body (2a, 6a Figure 1) with an associated through hole with the insertion port {6b Fig. 2}, the protruding body having a tapered upward profile (6c Fig. 2). 5 / Securing device for a medical needle according to claim 3 characterized in that that the securing means limiting or avoiding re-insertion of the needle comprises a flexible tubular element 40 protruding where the needle is inserted, the tube being preformed bent in the initial state to prevent re-insertion of the needle {6d, 6e Figure 3} 6 / device for securing a needle for medical use according to claim 3 characterized in that the securing means limiting or avoiding re-insertion of the needle it comprises an elastic body masking the insertion hole in the initial state, and withdrawing according to a predetermined constraint for the passage of the needle. {6a Figure 6} 7 / Device for securing a needle for medical use according to claim 3 characterized in that the securing means limiting or avoiding re-insertion of the needle comprises a spring in which the needle is inserted, the spring being preformed bent in the initial state to prevent the insertion of the needle. needle. {6fa Figure 4} 8 / device for securing a needle for medical use according to claim 3 characterized in that the securing means limiting or avoiding re-insertion of the needle comprise a spring in which the needle is inserted, the spring being so flexible in the initial state, that it will bend itself alone, if only by gravity alone, {6fa2 Figure 4} by obstructing the passage opening to prevent re-insertion of the Needle 9 / device for securing a needle for medical use according to claim 3 characterized in that the securing means limiting or avoiding re-insertion of the needle comprises an elastic tongue obstructing the insertion of the needle to the needle. initial state, the tab moving under stress to clear the through hole including either by pivoting {6g, 6ga Figure 5} or by winding (6h, 6ha Figure 5} elastically 10 / Securing device of a needle to us medical age according to any one of the preceding claims, characterized in that the flexible retaining means secured between the first base and the second base comprise at least one non-elastic flexible wire {3 Figure 1} 11 / Device for securing a needle for medical use according to any one of the preceding claims characterized in that the flexible retaining means secured between the first base and the second base comprise an arrangement of non-elastic flexible son regularly distributed with respect to the central axis formed by the two bases. {3a Figure 2} 12 / Device for securing a needle for medical use according to any one of claims 1 to 10 characterized in that the flexible retaining means secured between the first base and the second base comprise a arrangement of twisted flexible elements defining a non-extensible stable hollow cylindrical structure. {7 Figure} 13 / device for securing a needle for medical use according to any one of claims 1 to 10 characterized in that the flexible retaining means secured between the first base and the second base comprise a telescopic arrangement of interlocking elements with stops, {Figure 8} surrounding the lower part of the secure element and the mobile upper element of the device so as to limit the movement of the needle so that it does not exit the security zone for which was planned its evolution. 14 / device for securing a needle for medical use according to any one of claims 1 to 13 characterized in that it comprises a thrust spring {9,9a Figure 8} with a manually controlled release device {10, 10a Figure 8} located between the two bases to ensure the removal of the two bases for securing the needle in the security zone. 15 / device for securing a needle for medical use according to any one of claims 1 to 14 characterized in that the lower base comprises an outer geometry, truncated, and having at least one side slant {11 Figure 9} so as not to be traumatic in contact with the skin {12 Figure9} in the case of use of the needle in the intravenous position for example. 16 / device for securing a needle for medical use according to any one of claims 1 to 15 characterized in that the securing zone comprises walls integrated in a conformation of a connector type "Luer Lock" female. 35 40 45