Patent Grant
8956307
The present invention relates to a blood collection set, a sampling holder, and a needlestick-preventive needle cover.
Conventionally, a blood collection set having a blood collection needle, a blood bag, a sampling holder, and a needlestick-preventive needle cover is known (see, e.g., Patent Document 1).
The conventional sampling holder described in Patent Document 1 has a substantially cylindrical body, and a lid (a cap) which is attached to or detached from the body. This lid is provided with a fitting portion (an inner cylinder of the cap). After a blood collection, a blood collection needle to be discarded is accommodated in a needlestick-preventive needle cover. Then, the needlestick-preventive needle cover is pushed into the fitting portion of the lid, and the sampling holder and the needlestick-preventive needle cover are discarded together with the blood collection needle. Accordingly, the blood collection needle can be prevented from being exposed when discarding the sampling holder and the needlestick-preventive needle. As a result, it is possible to reduce the risk of needlestick and blood infection that may occur when discarding with the blood collection needle being exposed.
In a place where a blood collection set is used, such as blood donation, from a safety point of view, the risk of needlestick and blood infection occurring at the time of disposal of the blood collection is desired to be as close as possible to zero. Thus, a blood collection set is desired to have a sampling holder and a needlestick-preventive needle cover that are more difficult to disengage from each other.
To prevent the sampling holder and the needlestick-preventive needle cover of from disengaging from each other to address such a demand with the conventional blood collection set described in Patent Document 1, the needlestick-preventive needle cover needs to be pushed into the fitting portion of the lid by a relatively strong force. It is of course important to enhance secure engagement of the sampling holder and the needlestick-preventive needle cover. However, it is desired from the viewpoint of a user of the blood collection set that the needlestick-preventive needle cover can be fit into the fitting portion by a smaller force.
The present invention has been made in view of such a demand, and it is an object thereof to provide a blood collection set, a sampling holder, and a needlestick-preventive needle cover, in which the sampling holder and the needlestick-preventive needle cover more difficult to disengage from each other than conventional, and the needlestick-preventive needle cover can be fit into a fitting portion of the sampling holder with a smaller force than conventional.
[1] A blood collection set (500) according to the present invention includes:
a sampling holder (100) having a tubular body (110) with an opening portion (111), a lid (130) configured to open and close the opening portion (111) of the tubular body (110), and a fitting portion (140) provided on a surface of the lid (130) on a side opposite to the tubular body (110), and
a needlestick-preventive needle cover (200) configured to fit into the fitting portion (140), in which
the fitting portion (140) includes:
a rib portion (141); and
a catching portion (142) having one or more protrusions or recesses provided on the rib portion (141), and
the needlestick-preventive needle cover (200) includes an engaging portion (250) configured to engage with the catching portion (142).
Thus, according to a blood collection set according to the present invention, when fitting the needlestick-preventive needle cover into the fitting portion, the catching portion catches the engaging portion. Accordingly, due to the engagement force of the catching portion and the engaging portion, the sampling holder and the needlestick-preventive needle cover are considerably more difficult to disengage from each other than conventional.
In addition, according to the blood collection set of the present invention, the needlestick-preventive needle cover is fit into the fitting portion of the sampling holder by engaging the catching portion with the engaging portion. Thus, the needlestick-preventive needle cover can be fit into the fitting portion of the lid by a smaller force, as compared with the case of the conventional blood collection set in which the needlestick-preventive needle cover is pressed into the fitting portion of the lid.
[2] It is preferable in the blood collection set (500) described in [1] that the catching portion (142) includes a plurality of protrusions or a plurality of recesses.
With this configuration, the blood collection set is such that the sampling holder and the needlestick-preventive needle cover become more difficult to disengage from each other.
[3] It is preferable in the blood collection set (500) described in [2] that the rib portion is a circumferential rib (141), and that the plurality of protrusions or the plurality of recesses are arranged symmetrically with respect to an imaginary line (L1) perpendicular to a central axis of the circumferential rib (141).
With this configuration, the protrusions or the recesses are arranged in a balanced manner. Thus, there is no imbalance of locations where the needlestick-preventive needle cover is caught. Accordingly, the blood collection set becomes such that the sampling holder and the needlestick-preventive needle cover are difficult to disengage from each other, and are easy to fit in.
[4] It is preferable in the blood collection set (500) described in any one of [1] to [3] that the catching portion (142) includes the protrusions, and that holes (143) are provided in a boundary portion between the rib portion (141) and the surface of the lid (130) on the side opposite to the tubular body (110) and at positions corresponding to the protrusions.
With this configuration, a backlash at the time of pushing the needlestick-preventive needle cover into the fitting portion can be reduced. Consequently, the resistance at the time of fitting the needlestick-preventive needle cover into the fitting portion can be reduced. Accordingly, the needlestick-preventive needle cover can be fit into the fitting portion with a smaller force.
[5] It is preferable in the blood collection set (500) described in any one of [1] to [4] that the catching portion (142) includes the protrusions, and that distal ends (142P) of the catching portion (142) extend toward a surface of the lid (130) on a side of the tubular body (110).
With this configuration, the catching portion serves as a so-called “barb”, so that the engaging portion and the catching portion can be made more difficult to disengage from each other. Consequently, the blood collection set becomes such that the sampling holder and the needlestick-preventive needle cover are more difficult to disengage from each other.
[6] It is preferable in the blood collection set (500) described in any one of [1] to [5] that a click portion (131) is provided on an end portion of the lid (130), and that a click engaging portion (115) engaging with the click portion (131) is provided near the opening portion (111) of the tubular body (110).
With this configuration, the opening portion of the tubular body can easily be closed by the lid.
[7] A sampling holder (100) according to the present invention includes:
a tubular body (110) having an opening portion (111), a lid (130) configured to open and close the opening portion (111) of the tubular body (110), and a fitting portion (140) provided on a surface of the lid (130) on a side opposite to the tubular body (110), in which
the fitting portion (140) includes:
a rib portion (141); and
a catching portion (142) having one or more protrusions or recesses provided on the rib portion (141).
The sampling holder according to the present invention includes the catching portion. Thus, for a reason similar to that in the case of the blood collection set described in [1], the sampling holder is such that, when the needlestick-preventive needle cover is fit into the sampling holder, the needlestick-preventive needle cover is more difficult to disengage therefrom than conventional, and that the needlestick-preventive needle cover can be fit in with a smaller force than conventional.
[8] It is preferable in the sampling holder (100) described in [7] that the catching portion (142) includes a plurality of protrusions or a plurality of recesses.
With this configuration, the sampling holder is such that when the needlestick-preventive needle cover is fit into the sampling holder, the needlestick-preventive needle cover is more difficult to disengage therefrom.
[9] It is preferable in the sampling holder (100) described in [7] or [8] that the catching portion (142) includes the protrusions, and that holes (143) are provided in a boundary portion between the rib portion (141) and the surface of the lid (130) on the side opposite to the tubular body (110) and at positions corresponding to the protrusions.
With this configuration, for a reason similar to that in the case of the blood collection set described [4], the sampling holder becomes such that, when fitting the needlestick-preventive needle cover into the sampling holder, the needlestick-preventive needle cover can be fit in by a smaller force.
[10] A needlestick-preventive needle cover (200) according to the present invention includes an engaging portion (250) configured to engage with the catching portion (142) of the sampling holder (100) described in [7].
The needlestick-preventive needle cover according to the present invention includes the engaging portion. Thus, for a similar to that in the case of the blood collection set described in [1], the needlestick-preventive needle cover is such that when the needlestick-preventive needle cover is fit into the sampling holder, the needlestick-preventive needle cover is more difficult to disengage from the sampling holder than conventional, and that the needlestick-preventive needle cover can be fit into the fitting portion of the sampling holder by a smaller force than conventional.
The reference signs in parentheses added to the terms for respective parts or the like in this section (the section of Means of Solving the Problems) are used to facilitate the understanding of contents described in this section, and not to limit the contents described in this section.
With the blood collection set having the sampling holder and the needlestick-preventive needle cover according to the present invention, the sampling holder and the needlestick-preventive needle cover can securely engage with each other. Thus, the sampling holder and the needlestick-preventive needle cover are considerably more difficult to disengage from each other than conventional. Consequently, the risk needlestick and blood infection occurring at the time of disposal of the blood collection set can be further reduced, so that safety at the time of disposal can be further improved. In addition, because the needlestick-preventive needle cover is fit into the fitting portion of the sampling holder by engaging the catching portion and the engaging portion with each other, the needlestick-preventive needle cover can be fit into the fitting portion with a smaller force, as compared with the case of the conventional blood collection set in which the needlestick-preventive needle cover is pushed into the fitting portion of the lid.
a) and 6(b) are views illustrating a fitting portion 140 of the sampling holder 100, in which
a) and 7(b) are views illustrating the fitting between the needlestick-preventive needle cover 200 and the sampling holder 100, in which
a) and 8(b) are views illustrating the relationship between each catching portion 142 and an associated engaging portion 250 at the fitting therebetween, in which
Hereinafter, a blood collection set, a needlestick-preventive needle cover, and a sampling holder according to the invention are described, based on an embodiment illustrated in the drawings.
A blood collection set according to the invention includes at least a sampling holder and a needlestick-preventive needle cover.
Blood Collection Set 500
First, the configuration of a blood collection set 500 according to the embodiment is described with reference to
As illustrated in
The blood bag 310 is connected to the blood collection needle 410 via a blood collection tube T1. A first branching tube 420 is provided at a partway position on the blood collection tube T1. A sampling bag 320 is connected to the branching tube 420 via an initial blood flow introduction tube T2. The sampling holder 100 is connected to the sampling bag 320. The needlestick-preventive needle cover 200 is attached to the blood collection tube T1 near the blood collection needle 410.
The blood bag 310 is connected to the first bag 330 via the first connection tube T3, in addition to the blood tube T1. The blood filter 450 aimed at removing leukocytes is provided at a partway position on the first connection tube T3. In addition to the first connection tube T3, the first bag 330 is connected to the second branching tube 430 via a second connection tube T4. One of branches of the second branching tube 430 is connected to the second bag 340 via a third connection tube T5, the other branch thereof is connected to the blood storage solution containing bag 350 via a fourth connection tube T6.
The blood bag 310 and the blood storage solution containing bag 350 accommodate blood storage solutions such as MAP (mannitol adenine phosphate) solutions or anticoagulants (not shown).
Needlestick-Preventive Needle Cover 200
As illustrated in
As illustrated in
The tubular body flange portion 210 has a circular cross-section whose outside diameter has a value set so that the tubular body flange portion 210 is placed within the inner circumferential surface of a fitting portion 140 provided in a lid 130 of the sampling holder 100, which will be described below.
The large-diameter portion 220 also has a circular cross-section. The outside diameter of the large-diameter portion 220 is slightly smaller than that of the tubular body flange portion 210. However, the large-diameter portion 220 is formed such that the inside diameter thereof is substantially equal to that of the tubular body flange portion 210.
The polygonal portion 240 has a substantially square cross-section.
Incidentally, plastic materials, such as polypropylene, can preferably be used as the material of the needlestick-preventive needle cover 200.
As illustrated in
Sampling Holder 100
As illustrated in
The tubular body 110 has a cylindrical shape and is provided with the opening portion 111 at one end thereof. The other end portion at the side of the needle mounting portion 113, i.e., the other end portion of the tubular body 110 has a tapered shape whose diameter is reduced. The leading end having a tapered shape includes a circular surface 112 formed to be substantially perpendicular to the central axis of the tubular body 110. The center of the circular surface 112 is opened. This opening is provided with the needle mounting portion 113. A blood collection tube sampling needle 440 (see
An opening flange portion 114 having a substantially elliptical shape is provided on the edge of the opening portion 111 of the tubular body 110. A click engaging portion 115 is provided in the opening flange portion 114 and formed to be engageable with a click portion 131 of the lid 130.
In addition, a hinge 120 is provided opposite to the click engaging portion 115 of the opening flange portion 114. The lid 130 is connected thereto via the hinge 120.
The lid 130 has the substantially same shape as that of the outer circumferential shape of the opening flange portion 114, i.e., has a substantially elliptical shape.
The click portion 131 is provided on a back-surface S1 of the lid 130 at a given position (i.e., the position opposite to the hinge 120). The leading end of the click portion 131 is formed to protrude like a hook toward the hinge 120 and to be engageable with the click engaging portion 115 when the lid 130 is closed.
a) and 6(b) are views illustrating the fitting portion 140 of the sampling holder 100, in which
The fitting portion 140 includes a circumferential rib 141 serving as a rib portion, and each catching portion 142 including a protrusion provided on the inner circumferential surface of the circumferential rib 141. The circumferential rib 141 is formed to be positioned such that the circumference of the circumferential rib 141 overlaps with that of the opening portion 111 of the tubular body 110 when the lid 130 is closed. That is, the central axis of the circumferential rib 141 substantially coincides with that of the opening portion 111. The diameter of the circumferential rib 141 is substantially equal to that of the opening portion 111. The circumferential rib 141 is formed so that a protrusion height of the circumferential rib 141 (the height of the circumferential rib 141 protruding from the lid front-surface S2) is, e.g., about 2 mm.
Each catching portion 142 including a protrusion is formed to protrude from the inner circumferential surface of the circumferential rib 141 toward the central axis thereof. For example, five catching portions 142 are provided to be arranged symmetrically with respect to an imaginary line L1 perpendicular to the central axis of the circumferential rib 141 (see
As illustrated in
When blood is pooled in the sampling bag 320, a worker opens the lid 130, and inserts a blood collection tube (not shown) into the tubular body 110. Thus, the worker collects the blood pooled in the sampling bag 320. After the blood collection, the worker pulls the blood collection tube out of the tubular body 110 and closes the tubular body 110 with the lid 130.
a) and 7(b) are views illustrating the fitting between the needlestick-preventive needle cover 200 and the sampling holder 100, in which
In addition,
When the needlestick-preventive needle cover 200 that accommodates the blood collection needle 410 is fit into the sampling holder 100, the needlestick-preventive needle cover 200 is moved closer to the lid 130 in a state in which the tubular body 110 is closed with the lid 130, as illustrated in
At that time, the engaging portion 250 touches and is pressed by the catching portion 142, as illustrated in
In the lid 130 of the sampling holder 100, holes 143 are provided in the boundary part between the lid front surface S2 and the circumferential rib 141. As seen from
The blood collection set 500 according to the embodiment of the configuration is such that when the needlestick-preventive needle cover 200 is fit into the fitting portion 140, each catching portion 142 engages with the engaging portion 250. Thus, the sampling holder 100 and the needlestick-preventive needle cover 200 can be made by an engaging force therebetween to be considerably more difficult to disengage from each other than conventional.
In addition, the blood collection set 500 according to the embodiment is such that the needlestick-preventive needle cover 200 is fit into the fitting portion 140 of the sampling holder 100 by causing the catching portion to catch the engaging portion 250. Thus, the blood collection set 500 according to the embodiment can fit the needlestick-preventive needle cover 200 into the fitting portion 140 by a smaller force, as compared with the case of the conventional blood collection set in which the needlestick-preventive needle cover is pressed into the fitting portion of the lid.
In the blood collection set 500 according to the embodiment, each catching portion 142 includes a plurality of protrusions. Thus, the blood collection set 500 is such that the sampling holder 100 and the needlestick-preventive needle cover 200 are more difficult to disengage from each other.
In the blood collection set 500 according to the embodiment, as illustrated in
In the blood collection set 500 according to the embodiment, the catching portion 142 includes the protrusions. The holes 143 are provided at the positions corresponding to the catching portions 142 in the boundary portion between the lid front-surface S2 and the circumferential rib 141.
While fitting the needlestick-preventive needle cover 200 into the fitting portion 140, when the engaging portion 250 of the needlestick-preventive needle cover 200 presses the catching portion 142, a resistance force resisting the pressing acts upon the catching portion 142. At that time, the resistance force acting upon the catching portion 142 can be reduced to a relatively small value. Consequently, the resistance at the time of fitting the needlestick-preventive needle cover 200 into the fitting portion 140 can be reduced to a small value. Thus, the needlestick-preventive needle cover 200 can be fit into the fitting portion 140 by smaller force.
In the blood collection set 500 according to the embodiment, the lid 130 is connected to the tubular body 110 via the hinge 120. Thus, the lid 130 is never lost when the lid 130 is uncapped.
In the blood collection set 500 according to the embodiment, the click portion 131 is provided at an end portion of the lid 130. The click engaging portion 115 engaging with the click portion 131 is provided in the vicinity of the opening portion 111 of the tubular element 110. Thus, the opening portion 111 of the tubular body 110 can relatively easily be closed by the lid 130.
In the blood collection set 500 according to the embodiment, the catching portion 142 includes the protrusions. Each distal end 142P of the catching portion 142 extends toward the lid front-surface S2 (see
Thus, after the engaging portion 250 rides over each catching portion 142 (when the fitting of the needlestick-preventive needle cover 200 is completed), the engaging portion 250 and the catching portion 142 surely engage with each other even when the needlestick-preventive needle cover 200 moves in a direction opposite to the lid front-surface S2 (the direction in which the needlestick-preventive needle cover 200 disengage). Thus, the needlestick-preventive needle cover 200 can be more restrained from being disengaged from the fitting portion 140.
In the blood collection set 500 according to the embodiment, the protrusion height of the circumferential rib 141 serving as a rib portion ranges from 1 mm to 5 mm.
If the protrusion height of the circumferential rib 141 is less than 1 mm, the catching portion 142 is relatively small. Accordingly, it is not easy to obtain an engaging force of a desirable level.
On the other hand, if the protrusion height of the circumferential rib 141 is higher than 5 mm, it may be difficult to demold the sampling holder 100 from a mold at the time of manufacture thereof.
Therefore, the protrusion height of the circumferential rib 141 serving as a rib portion is set to range from 1 mm to 5 mm. Thus, it is difficult to disengage from each other, and the blood collection set is easy to manufacture.
The sampling holder 100 according to the embodiment includes the catching portion 142. Thus, for a reason similar to that in the case of the blood collection set 500, the sampling holder 100 is such that when the needlestick-preventive needle cover 200 is fit thereinto, the needlestick-preventive needle cover 200 is difficult to disengage therefrom, as compared with the case of being fit into the conventional sampling holder, and that the needlestick-preventive needle cover 200 can be fit thereinto by a force smaller than that needed in the case of being fit into the conventional sampling holder.
The needlestick-preventive needle cover 200 according to the embodiment includes the engaging portion 250. Thus, for a reason similar to that in the case of the blood collection set 500, the needlestick-preventive needle cover 200 is such that when fit into the sampling holder 100, the needlestick-preventive needle cover 200 is difficult to disengage from the sampling holder 100 than conventional, and that the needlestick-preventive needle cover 200 can be fit into the fitting portion 140 of the sampling holder 100 by force smaller than conventional.
The embodiment described hereinabove only exemplifies a specific example of the present invention. The scope of the invention is not limited to the embodiment but can include various modifications within the scope of the technical ideas thereof.
(1) According to the embodiment, the blood collection set 500 includes a plurality of bags (the blood bag 310, the sampling bag 320, the first bag 330, the second bag 340, and the blood storage solution containing bag 350). However, the present invention is not limited thereto. The types of the bag are not limited to the bags described above. The number of bags can be 1 to 4 or can be 6 or more. In addition, according to the embodiment, the blood collection set 500 includes the blood filter 450. However, the blood filter is not indispensable.
That is, as long as the blood collection set includes at least the needlestick-preventive needle cover and the sampling holder, the configuration of the blood collection set is not limited to a specific one.
(2) In the embodiment, both of each catching portion 142 of the sampling holder 100 and the engaging portion 250 of the needlestick-preventive needle cover 200 are the protrusions. However, the catching portion and the engaging portion according to the invention are not limited thereto. One of the catching portion and the engaging portion can be a recess. That is, the catching portion and the engaging portion can be the combination of the catching portion formed of a protrusion, and the engaging portion formed of a recess, or that of the catching portion formed of a recess, and the engaging portion formed of a protrusion.
(3) According to the embodiment, the catching portion 142 of the sampling holder 100 is a protrusion protruded from the inner circumferential surface of the circumferential rib 141 serving as a rib portion. The catching portion according to the invention is not limited thereto. The catching portion can be a protrusion or a recess, which is provided on the outer circumferential surface of a rib portion. In this case, it is recommendable to set the tubular body flange portion 210 of the needlestick-preventive needle cover 200 such that the inner circumferential surface of the tubular body flange portion 210 is placed at an outer side than the outer circumferential surface of the rib portion, and that the engaging portion is formed on an edge portion of the inner circumferential surface of the tubular body flange portion 210. Although the embodiment has been described by exemplifying a case in which the outer circumferential surface of the tubular body flange portion 210 is set to be placed at an inner side than the inner circumferential surface of the fitting portion 140, the invention is not limited to this case. Incidentally, if the catching portion and the engaging portion engage each other, the inner circumferential surface of the tubular body flange portion 210 and the outer circumferential surface of the rib portion, or the outer circumferential surface of the tubular body flange portion 210 and the inner circumferential surface of the rib portion can be either contacted with each other or separated from each other. For example, if one of the catching portion and the engaging portion is a protrusion or the other of the catching portion and the engaging portion is a recess, the inner circumferential surface or the outer circumferential surface of the tubular body flange portion 210 can be configured to be contacted with the outer circumferential surface or the inner circumferential surface of the rib portion.
(4) The embodiment has exemplified a case where there are five catching portions 142 of the sampling holder 100. However, the invention is not limited to this case. The number of the catching portions can be 1 to 4 or can be 6 or more.
(5) In the embodiment, the tubular body 110 of the sampling holder 100 is connected to the lid 130 via the hinge 120. However, the invention is not limited to this configuration. A connection portion therebetween can be, e.g., a cord-like member or a chain-like member other than the hinge.
The tubular body 110 and the lid 130 can be separated from each other via nothing. In this case, the tubular body and the lid can differ in material from each other.
(6) In the embodiment, an end portion of the sampling holder 100, which is at the side of the needle mounting portion 113, has a tapered shape. The invention is not limited to this configuration. This end portion can have a shape other than the tapered shape.
(7) In the embodiment, the tubular body 110 of the sampling holder 100 is cylindrically-shaped. However, the tubular body of the invention is not limited thereto. The tubular body can be polygonally-shaped, as long as a blood collection tube can be inserted thereinto.
(8) The embodiment has been described by exemplifying the circumferential rib 141 as the rib portion. However, the rib portion according to the invention is not limited thereto. The rib portion can have a polygonal shape, such as a triangle and a rectangle, other than a circular-shape. In addition, a rib configuring the rib portion is not necessarily shaped to be entirely continuous. The rib can have a partially cut-out shape.
(9) In the embodiment, the needlestick-preventive needle cover 200 is configured by the tubular body including the large-diameter portion 220 that is circularly cross-sectionally shaped, and the polygonal portion 240 that is substantially square shaped. The invention is not limited to this tubular body. The tubular body according to the invention can be either that having a circular cross-section as a whole, or that having a polygonal cross-section as a whole.
In addition, in the embodiment, the polygonal portion 240 of the needlestick-preventive needle cover 200 has a substantially square cross-section. The invention is not limited to this polygonal portion. The shape of the polygonal portion can substantially be a triangle or a polygon with five or more sides.
As long as the blood election tube and the blood collection needle can be inserted into the tubular body, the shape of a cross-section of the tubular body of the needlestick-preventive needle cover is not limited to a specific one.
(10) In the embodiment, the engaging portion 250 of the needlestick-preventive needle cover 200 is provided to protrude outwardly over the entire circumference thereof. However, the invention is not limited to this engaging portion. The engaging portion 250 is not necessarily shaped to be entirely continuous. The engaging portion 250 can have a partially cut-out shape.
(11) Apparently, the sampling holder and the needlestick-preventive needle cover can be applied not only to a blood collection set having a bag for collecting and preserving blood or the like but to a transfusion circuit set or the like configured to be connectable to a transfusion bag for infusion or to a blood circuit set used for hemodialysis.
This application is based on Japanese Patent Application No. 2009-156592 filed on Jul. 1, 2009, the content of which is incorporated herein by reference.
The blood collection set having the sampling holder and the needlestick-preventive needle cover according to the invention can surely engage the sampling holder and the needlestick-preventive needle cover. Thus, the disposal of needles used in the medical field can safely and reliably be performed. The blood collection set according to the invention can be utilized not only for a blood collection set having a blood collection needle but for a blood circuit set having a dialysis needle, a transfusion circuit set having an infusion needle, and the like.
| Number | Date | Country | Kind |
|---|---|---|---|
| 2009-156592 | Jul 2009 | JP | national |
| Filing Document | Filing Date | Country | Kind | 371c Date |
|---|---|---|---|---|
| PCT/JP2010/061001 | 6/28/2010 | WO | 00 | 12/22/2011 |
| Publishing Document | Publishing Date | Country | Kind |
|---|---|---|---|
| WO2011/001950 | 1/6/2011 | WO | A |
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| Number | Date | Country | |
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| 20120095368 A1 | Apr 2012 | US |
