JP2006500131A - Flexible sac container and associated infusion device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a new flexible sac-like container used when injecting a liquid used for medical treatment.
A sac-like container (2) made of a flexible material is connected to a connecting joint (3) by a dispensing conduit (4). The sac-like container also comprises a locking means (10), which supports the injection device in cooperation with the support means of the injection device.

Description

The present invention relates to a flexible sac container for containing a liquid to be injected. The present invention also relates to a suitable injection device using the flexible sac-like container.
The present invention is particularly effective when used in the field of injecting liquids used in medicine, but is not limited to this field.

  In medicine, liquid injection is always performed. This is especially true when artificial nutrition is transfused or irrigated from veins or arteries, or when a control solution is injected. Among the various known methods, injecting a high pressure liquid conditioned in a flexible sac container is a very suitable method for the medical environment as it maintains sufficient hygiene .

  The flexible sac container is obtained by gluing or welding together in a known manner around two sheets of flexible material so as to obtain a volume suitable for containing the injecting liquid. As a matter of course, the spout is arranged around the periphery.

  In use, the flexible sac container is connected to various removable elements. Here, mention may be made in particular of filling irrigation devices, intermediate conduits, infusion conduits such as catheters, hypodermic needles and the like. For this reason, the mouth of the flexible sac-like container is usually connected to the coupling joint through an appropriate length of the extraction conduit. This coupling joint can be reversibly connected to any removable element.

  It is known that conventional medical liquid injection devices are not completely satisfactory. For this reason, the patent applicant of the present invention has already invented a new injection device and has filed it as French patent application No. 9700235. The newly devised device is provided with an enclosure containing an inert liquid that can be pressurized to deform the flexible sac container disposed therein. If necessary, the pressure exerted by the inert liquid gradually compresses the flexible sac container containing the medical liquid and further deforms the container so that the infusate flows out of the dispensing conduit. The infusion device enclosure is substantially closed by a movable occlusive element forming a lid. This lid can be composed of a number of complementary parts.

  The occlusive element usually also serves as a securing means for the flexible sac container. In fact, in order to keep the flexible sac inside the enclosure, the dispensing conduit is wedged and fixed in a hole or slit with a slightly smaller cross-section disposed in the closure element. Let

  This type of infusion device, however, has the disadvantage that the flexible sac cannot be satisfactorily held in the enclosure due to the risk of the dispensing conduit slipping and moving in the hole or slit. is there. Furthermore, the fixation by the wedges, as a matter of course, tends to permanently damage the dispensing conduit, and therefore the conduit deteriorates rapidly.

  Therefore, the technical problem to be solved by the present invention is a flexible sac container for use in an infusion device, such as disclosed in French patent application No. 9700235, which comprises a dispensing conduit. It consists of a sac-like container of flexible material connected to the coupling joint, which significantly improves the fixation in the injection device and secures its physical integrity, thereby resolving the current problems of the technology. It is to provide a flexible sac container that can be eliminated.

  In accordance with the present invention, this technical problem is solved by a flexible sac-like container further comprising special locking means capable of cooperating with support means arranged in connection with the injection device. Can do.

  According to the present invention, holding the flexible sac container in the infusion device is not performed directly on the dispensing conduit, but via special locking means. As will be apparent from the following description, this special locking means has a higher fixing effect and does not have a detrimental effect on the dispensing conduit.

  The present invention is also an infusion device that can be used with the flexible sac container, having an enclosure, the opening of the enclosure being occluded by a movable closure element forming at least a lid, The enclosure relates to an infusion device containing an inert liquid that can be pressurized to deform the entire flexible sac container inside the enclosure. This infusion device is further noteworthy in that it further comprises support means that can cooperate with the locking means of the flexible sac container disclosed above.

Other features of the invention will be apparent from the following description. These features can be used alone or in combination.
Other features and advantages of the present invention will become apparent from the following description with reference to the accompanying drawings.

  FIG. 1 shows a flexible sac container (1) for use in an infusion device (100) described below. This sac-like container (1) is composed of a sac-like container (2) made of a flexible material as in the prior art, and this sac-like container (2) is connected via a dispensing conduit (4) indicated by a dotted line. Connected to the joint (3).

  In this embodiment, the sac container (2) is glued or welded around two sheets of flexible material so as to obtain a capacity suitable for containing the infusion liquid (5). Obtained by pasting together. Naturally, the opening (6) is arranged so that the liquid (5) can be poured out. The opening (6) can be, for example, outside the sac container during the injection phase and inside the sac container (2) during the top-filling phase.

  The opening (6) is connected to the dispensing conduit (4), again by gluing, welding or other methods, so that it is completely airtight, the free end of the dispensing conduit (4) being It is connected to the coupling joint (3). Again, the coupling joint (3) is intended to allow the flexible sac container (1) to be connected to any removable element with a complementary coupling joint. Examples of the element include a filling irrigation device, an intermediate conduit, and an infusion conduit.

According to the present invention, the flexible sac container (1) further comprises special locking means (10) that can cooperate with support means (110) connected to the injection device (100). .
According to one feature of the invention, the locking means (10) is connected to the dispensing conduit (4). Here, the term articulation does not mean that the locking means (10) is forced to interlock with the dispensing conduit (4), but is simply dependent on each other. Means that they are possibly joined together by a partly movable connector.

  In any case, the locking means (10) is connected to the sac container (2) so that it does not interfere with the deformation of the sac container (2) when compressed in the infusion device (100). It is preferable to arrange the joint (3) at an appropriate location so as not to interfere with the use of the joint (3). Therefore, the flexible sac container (2) is held at the level of the dispensing conduit (4), but the locking means (10) serves as a kind of interface, so It is not held directly on the conduit (4). Because of this configuration, the dispensing conduit (4) is protected.

  Furthermore, the locking means (10) fixed to the dispensing conduit of the sac-like container (2) cooperates with the support means (110, 111) of the injection device to give the user a medical sac-like container ( This constitutes a so-called fail-safe system that allows 2) to be used correctly. This ensures the correct use of the sac container (2).

  According to another characteristic of the invention, the locking means (10) is arranged along the dispensing conduit (4) with the opening (6) of the sac-like container (2) and the coupling joint ( It is attached so that it can move between 3). However, the degree of freedom that the locking means (10) can enjoy is limited to axial sliding and axial rotation with respect to the dispensing conduit (4). Such an attachment can protect the dispensing conduit (4) by minimizing the interaction between the locking means (10) and the dispensing conduit (4) and thus minimizing stress. .

  In the embodiment shown in FIG. 1, the locking means (10) connected to the dispensing conduit (4) has approximately the same length as the length of the dispensing conduit (4). Such a feature makes it possible to limit the axial sliding of the locking means (10), so that the mobility of the locking means (10) is essentially only axial rotation.

The locking means (10) particularly has an appearance corresponding to the property of the liquid (5) contained in the sac-like container (2), that is, a specific appearance with respect to the predetermined liquid (5). preferable. The appearance of the locking means (10) can be determined by clearly indicating the shape and / or using a certain color and / or making the surface condition special. As shown in FIGS. 1 to 6, the locking means (10, 20) includes at least one through hole (12, 12 a, 22 b) through which the dispensing conduit (4) passes and each through hole ( 12, 22 a, 22 b) composed of rigid elements (11, 21) having protrusions (13, 23) extending almost perpendicularly.

  Of course, if the sac container has two compartments, the rigid element will have more than one hole to receive the respective conduit.

In the embodiment described above, the rigid element (11, 21) is constituted by a cylindrical tube in which each through hole (12, 22a, 22b) is formed in the axial direction. The protrusions (13, 23) have a large diameter and are constituted by a cylindrical tube portion that forms a stopper. The rigid elements (11, 21) act as a cylinder that encloses the dispensing conduit (4) to protect it. The protrusions (13, 23) cooperate with support means connected to the injection device (100) to serve as a stopper.
The projections (13, 23) are arranged on the rigid elements (11, 21) at the level of the so-called far ends (14, 24), ie the ends directed to the coupling joint (3). Is particularly preferred.

  According to a preferred feature of the invention, the so-called proximal end (15, 25) of the rigid element (11, 21), ie the end directed towards the sac container (2), is at least one outer chamfer. (16, 26a, 26b). As can be seen from the description of the injection device (100), this feature allows the locking means (10, 20) to be easily engaged in support means connected to the injection device (100). It becomes.

  2 and 3 show a locking means (10) similar to that corresponding to the first embodiment of the invention shown in FIG. Again, the rigid element (11) is in the form of a cylindrical tube with a central through hole (12), ie a through hole (12) arranged axially in the body of the rigid element (11). Indicates. The protrusion (13) is also cylindrical and is concentric with the rest of the body of the rigid element (11), but with a larger diameter to form an axial stop. Regardless of the outer shape of the rigid element (11), the through hole (12) extends in the axial direction over the entire height of the rigid element (11).

  As is apparent from FIG. 2, the protrusion (13) is arranged at the far end (14) of the rigid element (11). The proximal end (15) of the rigid element (11) has a frustoconical outer chamfer (16), and the chamfer (16) is formed over the entire circumference of the proximal end (15). Yes.

  As is clear from FIG. 3, the cylindrical tube, the protrusion (13), the through hole (12), and the outer chamfer (16) are all completely concentric with respect to the axis of the rigid element (11). Formed.

  4 to 6 show the locking means (20) of the second embodiment of the present invention. The second embodiment is different from the first embodiment in that the locking means (20) basically has two through holes (22a, 22b). The cylindrical tube and the protrusion (23) exhibit the same features as in the first embodiment of the present invention. However, as is apparent from FIGS. 4 to 6, in this embodiment, the rigid element 21 has two through holes arranged in parallel to each other and symmetrically with respect to the axis of the rigid element (21). (22a, 22b).

  The proximal end (25) of the rigid element (21) has two outer chamfers (26a, 26b) in this embodiment, and these two outer chamfers (26a, 26b) The shape of two slopes arrange | positioned symmetrically with respect to the surface which passes along the axis | shaft of a through-hole (22a, 22b) is shown.

  FIG. 7 shows an infusion device (100) for housing a flexible sac container according to the objects of the present invention. However, for this injection device, reference is made to French patent application No. 9700235. Accordingly, only a brief description of the injection device will be given here. The injection device (100) has an enclosure (101) whose opening (102) can be closed by at least one movable closure element (103a, 103b) forming a lid.

  The enclosure (101) contains an inert liquid (104) that can be pressurized to deform the entire flexible sac container (1) disposed within the enclosure (101). The infusion device (100) is also not shown in FIG. 7, but can be supported in cooperation with the locking means (10, 20) of the flexible sac container (1) as already described. Means (110).

  In this embodiment, as is also apparent from FIG. 8, the infusion device (100) further includes the enclosure (101) approximately near the edge (106) that delimits the opening (102). ) And a deformable jacket (105) that is sealed to the enclosure (101). Arranged in this way, the deformable jacket (105), along with the inner surface of the enclosure (101), defines a variable volume for containing an inert liquid (104) therein. On the other hand, the capacity of the deformable jacket (105) is for accommodating the flexible sac container (1).

  Although not shown in the accompanying drawings, the inert liquid (104) is pressurized by a compression means connected to the enclosure (101) through a connection opening (107) disposed therein by a known method. Is added.

  As shown in FIG. 9, the portion forming the lid is composed of two movable closure elements (103a, 103b). These movable closure elements (103a, 103b) have a complementary shape, so that the opening (102) of the enclosure (101) can be completely and reliably closed. These two closure elements (103a, 103b) are movable relative to the enclosure (101) and at the same time relative to each other (see arrows f1 and f2). Because of this relative mobility, special articulating means, such as hinges, can be used, or, as in the illustrated embodiment, the user manually connects the two closure elements (103a, 103b). It can also be moved relatively.

FIG. 9 also shows the opening (108) of the through hole (109) through which the portion between the locking means (10, 20) of the dispensing conduit (4) and the coupling joint (3) passes. ing.
As can be seen from FIG. 10, according to one aspect of the present invention, the support means (110) is received at least partially in a telescoping manner, thereby locking the flexible sac container (1). It is possible to cooperate with (10, 20). Therefore, it is preferable that the supporting means (110) has a shape substantially complementary to the locking means (10, 20) combined therewith.

  The configuration of being partially received in a nested manner does not mean that the supporting means (110) and the locking means (10, 20) are completely nested, and if the holding function can be realized, the supporting means (110) and the locking means (10, 20) are nested It means that the parts may be different. In extreme cases, nesting can take the simplest form. In that case, the support means (110) constitutes a substantially single support surface, which cooperates with the part forming the stop of the locking means (10, 20).

  According to another characteristic of the invention, as is very clear from FIG. 10, the support means is connected to at least one movable closure element (103a, 103b) forming a lid.

  In this particular embodiment, the injection device (100) has two movable closure elements (103a, 103b). The support means (110) is constituted by two cutouts (111a, 111b) respectively disposed in two movable closure elements (103a, 103b). By combining these two cutouts (111a, 111b), the locking means (10, 20) used when the movable closure elements (103a, 103b) block the opening (102) of the enclosure (101). ) Is formed in a substantially complementary shape.

  11, therefore, when the flexible sac container (1) is placed in the injection device (100), first the sac container (2) is enclosed in the enclosure (101), Exactly, it puts in the deformable jacket (105) like an Example. The movable closure element (103a, 103b) is then fitted tightly around the rigid element (11) attached to the flexible sac container (1). When the rigid element (11) is completely integrated into the complementary cutouts (111a, 111b), the combined can be placed at the level of the enclosure opening (102), ie at the closed position It becomes.

FIG. 12 shows the cooperative relationship between the locking means (10) of the flexible sac container (1) and the support means (100) of the injection device (100).
Locking means (10) having a simple protruding ring, i.e. a simple protrusion (13), similar to the rigid element (11) but without the tubular lower part (130) like the rigid element (11) It will be clear that it can be formed as

13 and 14 show a modification. In this variant, the dispensing conduit (4) is independent of the sac container and is connected to the latter so that it can be arbitrarily connected and disconnected.
Again, the sac-like container has an upstream dispensing conduit (40) that further includes a cut-off valve (40). A coupling joint (30) cooperating with a complementary coupling element (31) arranged at the upstream end of the.

  In this modification, the locking means (10 ′) is formed of a rigid element (11 ′), and this rigid element (11 ′) is connected to the upstream end of the dispensing pipe ( 11 ′). A variant of this ring (11 ') constituting the locking means is connected to a complementary joint (31) cooperating with a coupling joint (30) fixed to the sac container (2).

  Of course, the lid of the injection device is in the form of a recess (111) with a shape and size corresponding to the shape and size of the ring (11 '). Accordingly, when installed in the infusion device, the sac container can be held in an up, down or sideways position by a holding means that is suspended from a lid and configured by a ring (11 ').

  The locking means (10, 10 ') fixed to the sac-like container (2) cooperates with the support means (111) of the injection device, so that the user can correctly use the medical sac-like container (2). It will be understood that this constitutes a so-called fail-safe system. This ensures the correct use of the sac container (2).

When installed in the injection device, the sac-like container is suspended on the lid, and the holding means constituted by the rings (11, 11 ′) is in the injection device, more specifically in the lid. By cooperating with the corresponding recess (111) formed, ie the lower surface (60) of the ring (11, 11 ') co-operates with the corresponding surface, ie the surface (61) of the recess (111). It will also be appreciated that it can be held up, down or sideways.
Furthermore, the locking protrusion (13) may have a locking annular groove.

: Shows a flexible sac container that achieves the object of the present invention. : Shows the locking means of the first embodiment of the present invention. : It is a top view of the latching means of FIG. : Shows the locking means of the second embodiment of the present invention. : It is a side view of the latching means of FIG. : It is a bottom view of the latching means of FIG. : Indicates an injection device that achieves the object of the present invention. 8 is a cross-sectional view of the injection device of FIG. : It is a top view of the part which forms the lid | cover shown in FIG. : It is a longitudinal cross-sectional view of the part which forms the cover shown in FIG. : It is the longitudinal cross-sectional view which has arrange | positioned the flexible sac-like container in the injection device of FIG. : It is a longitudinal cross-sectional view of the injection device after arrangement | positioning of a flexible sac-like container is completed. : Indicates a sac-like container in a state where the connection with the extraction conduit is disconnected. FIG. 13 shows a modification in which the dispensing conduit (4) is independent and is detachably connected to the sac so that it can be arbitrarily connected to and disconnected from the sac. It shows what is. : Shows a sac-like container connected to a dispensing conduit. FIG. 14 shows a modification in which the dispensing conduit (4) is independent and is detachably connected to the sac so that it can be arbitrarily connected to and disconnected from the sac. It shows what is.

Claims (14)

A flexible sac container (1) for using medical fluid (5) in an infusion device (100), which is connected to a coupling joint (3) by a dispensing conduit (4) In the flexible sac-like container (1) having a sac-like container (2) of the sexual material, the flexible sac-like container (1) further comprises support means (110) connected to the injection device (100); A flexible sac-like container (1) characterized by having locking means (10, 20, 10 ') configured to cooperate. The flexible sac-like container (1) according to claim 1, characterized in that the locking means (10, 20) are connected to an extraction conduit (4). The locking means (10, 20) is mounted movably along the dispensing conduit (4) between the sac container (2) and the coupling joint (3). Or the flexible sac-like container (1) of 2. 4. The portion of the locking means (10, 20) connected to the dispensing conduit (4) has a dimension approximately equal to the length of the dispensing conduit (4). The flexible sac-like container (1) according to any one of the above. The locking means (10, 20) has an appearance corresponding to the properties of the liquid (5) contained in the sac-like container (2), the appearance being unique to the liquid (5) The flexible sac-like container (1) according to any one of claims 1 to 4, characterized in that: The locking means means (10, 20) are provided for at least one through hole (12, 22a, 22b) and each through hole (12, 22a, 22b) for passing the dispensing conduit (4) therethrough. 6. A flexible sac-like container (1) according to any one of claims 1 to 5, characterized in that it is constituted by a rigid element (11, 21) having a protrusion (13, 23) extending substantially vertically. ). The rigid element (11, 21) is constituted by a cylindrical tube in which each axial through hole (12, 22a, 22b) is disposed, and the protruding portion (13, 23) has a diameter. The flexible sac-like container (1) according to claim 6, characterized in that it is composed of a large cylindrical part forming a stopper. The protrusions (13, 23) are arranged on the rigid elements (11, 21) at the level of the far ends (14, 24) directed to the coupling joint (3). The flexible sac-like container (1) according to any one of claims 1 to 7. 9. The proximal end of the outer rigid element (11, 21) directed to the sac container (2) has an outer chamfer (16, 26a, 26b). The flexible sac-like container (1) according to one item. It has an enclosure (101) that can be closed by at least one movable closure element (103a, 103b) that forms the lid of the opening (102), the enclosure (101) being an interior of the enclosure (101) In an injection device (100) configured to contain an inert liquid (104) that can be pressurized to deform the entire flexible sac container (1) disposed in the device, the injection device (100) comprises: Furthermore, it has support means (110) which can cooperate with the locking means (10, 20) of the flexible sac-like container (1) according to any one of claims 1 to 9. An injection device (100). 11. The support means (110) according to claim 10, characterized in that it can cooperate at least partly in a telescopic manner with the locking means (10, 20) of the flexible sac container (1). Infusion device (100). 12. The injection device (100) according to claim 10 or 11, characterized in that the support means (110) has a shape which is substantially complementary to the locking means (10, 20) of the flexible sac container (1). ). 13. Injection device (1) according to any one of claims 10 to 12, characterized in that the support means (110) are connected to at least one movable closure element (103a, 103b) forming a lid. 100). The injection device (100) has two movable closure elements (103a, 103b) forming a lid, and the support means (110) has two movable closure elements (103a, 103b) each. Complementary recesses (111a, 111b) arranged in each of the two recesses (111a, 111b), and the two recesses (111a, 111b) form a substantially complementary housing portion with the locking means (10, 20). 14. The injection device (100) according to any one of claims 10 to 13, wherein the movable closure element (103a, 103b) closes the opening (102) of the enclosure (101).

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