Infant lancet assembly

Abstract

One embodiment according to the present disclosure provides an infant lancet assembly comprising a housing and, accommodated in the housing, a lancet, a mobile body, and a compression coil spring which can bias the mobile body in a prescribed first direction. The housing has a first housing section extending lengthwise in the first direction and a second housing section extending lengthwise in a second direction which is perpendicular to the first direction from the first housing section side. The lancet has a lancet body and a blade attached to the lancet body. The lancet body has a first body section installed so as to be integrally mobile with the mobile body, and a second body section which can snap-fit to the second housing section in the first direction. The mobile body has a first mobile body section which can move in the first direction and snap-fit to the first housing section in the second direction, and a second mobile body section on which the first body section is installed in a manner allowing axial rotation.

Description

Infant lancet assembly

[0001] The present disclosure relates to an infant lancet assembly.

[0002] Infant lancet assemblies are used to obtain small blood samples from infants. This blood sample is typically obtained by lancing the infant's heel. Because it is used to lancing the infant's heel, infant lancet assemblies may be referred to as heel sticks.

[0003] JP 2011-529376 A

[0004] The inventors of the present application recognize that conventional infant lancet assemblies have a relatively complicated structure, making it difficult to assemble the components. The difficulty in assembling the components can lead to a decrease in the production efficiency of infant lancet assemblies. Therefore, it is desirable to provide an infant lancet assembly with a simple structure.

[0005] In view of the above, an object of the present disclosure is to provide a lancet assembly for infants that has a simple structure.

[0006] In order to solve the above problem, one embodiment of the present disclosure provides an infant lancet assembly comprising: a housing; a lancet; a movable body; and a compression coil spring capable of biasing the movable body in a predetermined first direction, each of which is accommodated within the housing; the housing having a housing first portion whose longitudinal axis extends in the first direction and a housing second portion whose longitudinal axis extends from the housing first portion in a second direction perpendicular to the first direction; the lancet having a lancet body and a blade attached to the lancet body; the lancet body having a body first portion arranged to be movable integrally with the movable body, and a body second portion which can be mutually engaged with the housing second portion in the first direction; and the movable body having a movable body first portion which is movable in the first direction and mutually engaged with the housing first portion in the second direction, and a movable body second portion arranged so that the body first portion can rotate about an axis.

[0007] According to the present disclosure, it is possible to provide a lancet assembly for infants having a simple structure.

[0008] FIG. 1 is a perspective view schematically illustrating an infant lancet assembly according to an embodiment of the present disclosure in a pre-use state. FIG. 2 is a partially exploded perspective view schematically illustrating an infant lancet assembly according to an embodiment of the present disclosure in a pre-use state. FIG. 3 is a perspective view schematically illustrating a first sub-housing of a housing, which is a component of an infant lancet assembly according to an embodiment of the present disclosure. FIG. 4 is a perspective view schematically illustrating a second sub-housing of a housing, which is a component of an infant lancet assembly according to an embodiment of the present disclosure. FIG. 5 is a perspective view schematically illustrating a lancet, which is a component of an infant lancet assembly according to an embodiment of the present disclosure. FIG. 6 is a perspective view schematically illustrating the lancet as viewed from the opposite side to that of FIG. 5. FIG. 7 is a perspective view schematically illustrating a movable body, which is a component of an infant lancet assembly according to an embodiment of the present disclosure. FIG. 8 is a perspective view schematically illustrating the movable body as viewed from a different side than that of FIG. 7. Fig. 9 is a partially exploded cross-sectional view (corresponding to the central view of Fig. 2) schematically showing an infant lancet assembly according to an embodiment of the present disclosure in a state before use. Fig. 10 is a partially exploded cross-sectional view schematically showing an infant lancet assembly according to an embodiment of the present disclosure in a state at the start of use (when the trigger is pressed). Fig. 11 is a partially exploded cross-sectional view schematically showing an infant lancet assembly according to an embodiment of the present disclosure in a state during use. Fig. 12 is a partially exploded cross-sectional view schematically showing an infant lancet assembly according to an embodiment of the present disclosure in a state after use.

[0009] The present inventors have conducted extensive research into a lancet assembly for use with infants that has a simple structure, and as a result have come to provide a lancet assembly for use with infants according to one embodiment of the present disclosure.

[0010] From the viewpoint of providing an infant lancet assembly with a simple structure, the present disclosure is based on the idea of ​​controlling the movement of a lancet by combining a housing with a distinctive structure, a compression coil spring housed in the housing that can be stretched in one direction, a movable body that can move in one direction when biased by the compression coil spring, and a lancet connected to the movable body at a predetermined location.

[0011] Configuration of Lancet Assembly The main configuration of a lancet assembly 1000 according to an embodiment of the present disclosure based on the above technical idea will be described below with reference to drawings showing the lancet assembly in a pre-activation state.

[0012] 1 is a perspective view schematically illustrating a lancet assembly for infants according to an embodiment of the present disclosure in a pre-use state, and FIG. 2 is a partially exploded perspective view schematically illustrating a lancet assembly for infants according to an embodiment of the present disclosure in a pre-use state.

[0013] A lancet assembly 1000 according to one embodiment of the present disclosure comprises, as its main components, a housing 100, a housing cover 200, a lancet 300, a movable body 400, a compression coil spring 500 capable of biasing the movable body 400, a trigger 600, and a stopper 700 that restricts movement of the trigger 600 before use (see FIGS. 1 and 2 ). In this disclosure, the term "compression coil spring" refers to a spring that is compressed before use and that maintains its expanded state when released from its compressed state. In other words, this disclosure does not envision a "compression coil spring" that returns from an expanded state to a compressed state. In this specification, the integrated housing 100 and the housing cover 200 that covers the housing 100 are collectively referred to as a "housing composite."

[0014] Of the above components, the housing 100, the lancet 300, and the movable body 400 will be mainly specifically described below.

[0015] (Housing 100) Fig. 3 is a perspective view schematically showing a first sub-housing of the housing, which is a component of the infant lancet assembly according to an embodiment of the present disclosure. Fig. 4 is a perspective view schematically showing a second sub-housing of the housing, which is a component of the infant lancet assembly according to an embodiment of the present disclosure.

[0016] The housing 100 may be composed of, for example, a first sub-housing 100A and a second sub-housing 100B that can be connected to each other (see FIGS. 3 and 4). For example, the two sub-housings may be connected to each other by arranging the main surfaces of the first sub-housing 100A and the second sub-housing 100B so that a convex portion locally disposed on the inner surface of one sub-housing fits into a concave portion locally disposed on the inner surface of the other sub-housing. These two sub-housings may form a single housing 100. When the two sub-housings are connected to each other, the housing 100 may define an opening 170 through which the blade of a lancet 300 (described later) can protrude (see FIG. 1). In the embodiment shown in FIGS. 3 and 4, the interiors of both sub-housings may have a concave-convex shape. However, this is not limited thereto, and the interior of one sub-housing may have a concave-convex shape and the interior of the other sub-housing may have a flat shape.

[0017] The following description focuses on the configuration inside the first sub-housing 100A of the housing 100. As shown in FIG. 3 , the housing 100 (the first sub-housing 100A) includes at least one housing first portion 110, 120 extending longitudinally in a first direction (corresponding to the horizontal direction) and a housing second portion 140 extending longitudinally from the housing first portion in a second direction (corresponding to the vertical direction) perpendicular to the first direction. The second sub-housing 100B may also include a housing first portion extending longitudinally in the first direction (corresponding to the horizontal direction) and a housing second portion extending longitudinally in the second direction (corresponding to the vertical direction). When the two sub-housings are interconnected, at least the housing first portions and the housing second portions within the sub-housings 100A, 100B may be positioned so as to face each other.

[0018] The housing first portions 110, 120 are capable of engaging with a movable body first portion (described later) in a concave-convex manner in the second direction (corresponding to the vertical direction). That is, assuming that the long sides of the housing first portions 110, 120 extend in the first direction, the short sides of the housing first portions 110, 120 as a whole are capable of engaging with the movable body first portion (described later) in a concave-convex manner in the second direction (corresponding to the vertical direction). Note that the housing first portions 110, 120 are capable of engaging with a movable body first portion (described later) in a concave-convex manner in the second direction (corresponding to the vertical direction). As used herein, the term "convex-concave engagement" refers to a state in which one member (e.g., the housing first portion) has a concave shape and the other member (e.g., the movable body first portion) has a convex shape, allowing engagement between the two members due to their respective shapes; or a state in which one member (e.g., the housing first portion) has a convex shape and the other member (e.g., the movable body first portion) has a concave shape, allowing engagement between the two members due to their respective shapes. Taking the housing first portion and the movable body first portion as an example, this refers to a state in which the housing first portion and the movable body first portion are mutually engageable such that, due to their respective shapes, the movable body first portion is relatively movable in a first direction (e.g., the horizontal direction) but is prevented from relatively moving in a second direction (e.g., the vertical direction). Note that, in this embodiment, an example in which the two housing first portions 110 and 120 are spaced apart from each other is described. However, this is not limited to this, and one or more housing first portions may be provided as long as they are mutually engageable with the movable body first portion (described later).

[0019] Specifically, between the housing first parts 110, 120 and the movable body first part, one convex part can abut against the inner surface constituting the other concave part, thereby restricting movement of the movable body first part in the second direction, making it easier to control movement of the movable body in the first direction (corresponding to the lateral direction) as a whole.

[0020] In the illustrated embodiment, two housing first portions 110, 120 are provided, spaced apart from each other. In this case, for example, one end 111 (corresponding to a side surface of the housing) of the uppermost housing first portion 110 can be in contact with one side 510 of the compression coil spring 500. The other side 520 of the compression coil spring 500 can be connected to the movable body 400 (described later), specifically, to the protrusion 440 of the movable body 400.

[0021] Note that, as long as the housing first portion can control the movement of the movable body in the first direction (corresponding to the lateral direction), the number of housing first portions may be at least one, or from the viewpoint of more suitably controlling the movement of the movable body in the first direction (corresponding to the lateral direction), the number may be two or more.

[0022] In addition, from the viewpoint of improving the movement control of such movable body, it is preferable that the width dimension of the housing first parts 110, 120 in the second direction (corresponding to the vertical direction) is a dimension that allows the movable body first parts to slide in the first direction (corresponding to the horizontal direction) relative to the housing first parts 110, 120.

[0023] The second housing part 140 has a first end 141 on the proximal side relative to the first housing parts 110 and 120 and a second end 142 on the distal side relative to the first housing parts 110 and 120. The second housing part 140 is capable of engaging with the second body part of the lancet body, which is a component of the lancet described below, in a first direction (corresponding to the lateral direction).

[0024] That is, assuming that the longitudinal direction of the housing second part 140 extends in the second direction, the entire shorter side of the housing second part 140 can be engaged with the body second part of the lancet body in the first direction (corresponding to the horizontal direction). Specifically, between the housing second part 140 and the body second part, one convex part can abut against the inner surface constituting the other concave part. This restricts movement of the body second part in the first direction, making it easier to control movement of the body second part in the second direction as a whole.

[0025] From the viewpoint of improving the control of the movement of the second body part, it is preferable that the width dimension of the second housing part 140 in the first direction is a dimension that allows the second body part to slide in the second direction relative to the second housing part 140. This improves the control of the movement of the second body part, and as will be described later, it becomes possible to stabilize the movement of the blade of the lancet 300 when it is protruded to the outside as the second body part moves in the second direction during use.

[0026] In one embodiment of the present invention, the housing first portions 110, 120 extend in a first direction (corresponding to the horizontal direction), and the housing second portion 140 extends from the housing first portion in a second direction (corresponding to the vertical direction). By adopting such an extending configuration, the housing first portions 110, 120 and the housing second portion 140 are arranged to form a T-shape as a whole. Note that, as used herein, the "T-shaped arrangement of the housing first portion and the housing second portion" includes not only an arrangement in which the housing first portion and the housing second portion are in physical contact with each other, but also an arrangement in which the housing first portion and the housing second portion are spaced apart by a predetermined distance and form a substantially T-shape as a whole.

[0027] The housing 100 (first sub-housing 100A) may have a housing third part 130 that can be engaged with a body first part 311 of the lancet (described later) in the second direction, and a housing fourth part 150 that can accommodate the trigger 600. The housing third part 130 and the housing fourth part 150 may be arranged to extend in approximately the same direction as the housing first part at a predetermined interval. The housing 100 also has a locking part 160 that can lock a flexible part 450 of the movable body 400 (described later).

[0028] When the housing third part 130 is provided, it can be engaged with the lancet body first part 311 in a concave-convex manner, thereby restricting movement of the lancet body first part 311 in the second direction, which makes it easier to control overall movement of the lancet body first part 311 in the first direction (corresponding to the lateral direction).

[0029] In the illustrated embodiment, the first housing part 110, the second housing part 140, and the third housing part 130 may have a concave shape. In this case, the mating parts (movable body, lancet) that can be engaged with the concave-convex shape, which will be described later, may have a convex shape locally. However, without being limited to this, the first housing part to the third housing part may also have a convex shape. In this case, the mating parts (movable body, lancet) that can be engaged with the concave-convex shape locally have a concave shape.

[0030] (Lancet 300) Fig. 5 is a perspective view schematically showing a lancet, which is a component of a lancet assembly for infants according to an embodiment of the present disclosure. Fig. 6 is a perspective view schematically showing the lancet as viewed from the opposite side to that shown in Fig. 5.

[0031] The lancet 300 comprises a lancet body 310 and a blade 320 attached to the lancet body 310. The lancet body 310 comprises a first body part 311 disposed at one longitudinal end and a second body part 312 disposed at the other longitudinal end.

[0032] The first body part 311 is movable integrally with the movable body 400 and is connected to the movable body 400 so as to be rotatable about its axis. In one embodiment, the position of the rotatable connection of the first body part 311 to the movable body 400 can be maintained. The first body part 311 is engageable with the third housing part 130 in the second direction. This effectively restricts the movement of the first body part 311 of the lancet in the second direction, making it easier to control the movement of the first body part 311 in the first direction.

[0033] Furthermore, the second body part 312 is capable of engaging with the second housing part 140 in the first direction by projections and recesses, thereby restricting movement of the second body part in the first direction and making it easier to control movement of the second body part in the second direction.

[0034] Before the movable body 400 starts to move in the first direction, the second body part 312 is configured to be slidable between the first end 141 and the second end 142 of the second housing part 140. In other words, the second body part 312 of the lancet body 310 can be placed directly on the housing 100 itself. At this time, the blade 320 is configured to be able to be housed within the housing 100.

[0035] Furthermore, during an intermediate stage of movement of the movable body 400 in the first direction after the start of movement, the second body part 312 can be positioned on the second end 142 side of the second housing part 140 of the housing 100, and at this time, the blade 320 can protrude to the outside through the opening of the housing 100. Note that, from the viewpoint of keeping the degree of protrusion of the blade 320 to the outside constant, the second body part 312 can come into contact with the second end 142 of the second housing part 140, and movement of the second body part 312 further distal to the second end 142 can be restricted.

[0036] As described above, when the housing 100 comprises a first sub-housing 100A and a second sub-housing 100B, it is preferable that the above-mentioned body first part 311 can be arranged in the same row or on the same axis on each of the two opposing main surfaces of the lancet body 310.

[0037] This arrangement ensures two concave-convex engagement points between the first body part 311 and the third housing part 130 in the second direction, which more effectively restricts movement of the first body part 311 of the lancet in the second direction. As a result, overall, movement of the first body part 311 of the lancet in the first direction (corresponding to the lateral direction) can be more effectively controlled.

[0038] Similarly, when the housing 100 comprises a sub-housing 100A and a second sub-housing 100B, it is preferable that the above-mentioned body second part 312 can be arranged in the same line or on the same axis on each of the two opposing main surfaces of the lancet body 310.

[0039] This arrangement ensures two concave-convex engagement points between the second body part 312 and the second housing part 140 in the first direction, which more effectively restricts movement of the second body part 312 of the lancet in the first direction. As a result, overall, it is easier to more effectively control movement of the second body part 312 of the lancet in the second direction (corresponding to the vertical direction).

[0040] (Movable body 400) Fig. 7 is a perspective view schematically showing a movable body, which is a component of an infant lancet assembly according to an embodiment of the present disclosure. Fig. 8 is a perspective view schematically showing the movable body as viewed from a different side than that shown in Fig. 7.

[0041] The movable body 400 is configured to be biased in a first direction (corresponding to the lateral direction) by a compression coil spring 500. The movable body 400 has a protrusion 440 that can be connected to the compression coil spring 500. The protrusion 440 can be disposed at any position on the movable body 400 as long as the compression coil spring 500 can bias the movable body 400.

[0042] The movable body 400 also comprises at least one movable body first part 410 that can be engaged with the housing first part by projection and recess, a movable body second part 430 on which the body first part 311 of the lancet 300 can be rotatably installed, and a flexible part 450 that can be engaged with a predetermined location (corresponding to the engaging part 160) of the housing 100 before use. For example, when one side of this flexible part 450 is continuous with the movable body first part 410, the other side is in a free state to provide flexibility.

[0043] Furthermore, flexible portion 450 is positioned so that it can come into contact with trigger 600 during use. Specifically, at the start of use, stopper 700 that restricts the movement of trigger 600 is removed, allowing trigger 600 to be manually pushed in and moved. As a result, when flexible portion 450 comes into contact with trigger 600, its properties allow it to bend in a direction that allows it to release its engagement with a predetermined location on housing 100 (corresponding to locking portion 160). As a result, the engagement between them can be released.

[0044] Furthermore, when two housing first portions 110, 120 are provided spaced apart from each other as described above, in the illustrated embodiment, two movable body first portions 410, 420 may be provided spaced apart from each other so as to be capable of engaging with each other (see FIGS. 7 and 8). In this case, a movable body third portion 460 (corresponding to an intervening portion or a first-direction extending portion) may be provided between the two movable body first portions 410, 420, and may be slidable relative to the housing 100 and extend in the first direction. Furthermore, the movable body second portion 430 may be disposed, for example, perpendicular to the longitudinal extension direction of the movable body first portions 410, 420 when viewed in cross section.

[0045] Operation of the Lancet Assembly Based on the above configuration, the operation of the lancet assembly 1000 according to an embodiment of the present disclosure will be described.

[0046] (Before Start of Use) FIG. 9 is a partially exploded cross-sectional view (corresponding to the central view in FIG. 2) that schematically shows a lancet assembly for infants according to an embodiment of the present disclosure in a state before start of use.

[0047] Before use, the movement of trigger 600 is restricted by stopper 700. Therefore, flexible portion 450 of movable body 400 is locked to locking portion 160 of housing 100. In this state, movable body 400, which is connected to compressed coil spring 500 on one side of housing 100 (the right end in FIG. 9 ), remains stationary. In this stationary state, the second body portion of lancet body 310, a component of lancet 300, is located between first end 141 and second end 142 of second housing portion 140, and blade 320 is housed within housing 100.

[0048] (At the Start of Use) FIG. 10 is a partially exploded cross-sectional view schematically showing an infant lancet assembly according to an embodiment of the present disclosure in a state at the start of use (when the trigger is pressed).

[0049] At the start of use, the stopper is removed to allow trigger 600 to be pushed into housing 100 (see FIG. 10 ). When the user then pushes trigger 600, trigger 600 comes into contact with flexible portion 450 of movable body 400, and upon this contact, flexible portion 450 bends in a direction that allows the engagement with engaging portion 160 of housing 100 to be released. As a result, the engagement between the two can be released.

[0050] (During Use) FIG. 11 is a partially exploded cross-sectional view schematically showing an infant lancet assembly according to an embodiment of the present disclosure in a state during use.

[0051] When the flexible portion 450 of the movable body 400 is disengaged from the locking portion 160 of the housing 100, the compression coil spring 500 is released from its compressed state. This release of compression allows the compression coil spring 500 to bias the movable body 400 in the first direction. This allows the movable body 400 to start moving in the first direction.

[0052] In one embodiment of the present disclosure, as described above, the first body part 311 of the lancet body 310, which is a component of the lancet 300, is movable integrally with the movable body 400 in the first direction. Meanwhile, the second body part of the lancet body 310 is capable of mutually engaging with the second housing part 140 in the first direction.

[0053] With this configuration, when the movable body 400 moves in the first direction, the first body part 311 also moves in the first direction in conjunction with the movement of the movable body 400, while the movement of the second body part 312, which is engaged with the first body part 311 through a projection-and-recess connection, in the first direction is restricted. As a result, an axial rotation force acting toward the first direction acts on the first body part 311. Due to the action of this axial rotation force, as the first body part 311 moves in the first direction, the movement of the second body part, which is engageable with the second housing part 140 through a projection-and-recess connection, in the first direction (horizontal direction) is restricted, while a force acts to move the second body part in the second direction (vertical direction).

[0054] As described above, before the movable body 400 starts to move in the first direction, the second body part 312 of the lancet body 310 is configured to be located between the first end 141 and the second end 142 of the second housing part 140. Thereafter, during the movement of the movable body 400 in the first direction, a force that moves the second body part in the second direction (vertical direction) acts as the first body part 311 moves in the first direction, thereby enabling the second body part 312 to move from the first end 141 side to the second end 142 side of the second housing part 140.

[0055] Furthermore, as described above, during the course of movement of movable body 400 in the first direction, when second body portion 312 is positioned on the second end 142 side of second housing portion 140, blade 320 is configured to be able to protrude to the outside through opening 170 of housing 100. This makes it possible to cause blade 320 to protrude from the inside to the outside of housing 100 through opening 170 of housing 100 during the course of movement of movable body 400 in the first direction (see FIG. 11 ).

[0056] As described above, the movement control of the body second part 312 can be improved if the housing second part 140 in the first direction has a dimension that allows the body second part 312 to slide in the second direction relative to the housing second part 140. Therefore, during use, when the blade 320 protrudes to the outside as the body second part 312 moves in the second direction, the operation of the blade 320 can be stabilized.

[0057] (After Use) FIG. 12 is a partially exploded cross-sectional view schematically showing an infant lancet assembly according to an embodiment of the present disclosure in a state after use.

[0058] In one embodiment of the present disclosure, as described above, the first body part 311 of the lancet body 310, which is a component of the lancet 300, is movable integrally with the movable body 400. Meanwhile, the second body part of the lancet body 310 is capable of engaging with the second housing part 140 via a projection-recess engagement.

[0059] By adopting such a configuration, when the movable body 400 moves further along the first direction until it abuts against the other side of the housing 100 (the left end in Figure 12), the first body part 311 also moves further in the first direction as the movable body 400 moves further, while the movement of the second body part 312, which is engaged with the recessed and projecting parts, in the first direction is restricted.

[0060] This causes an axial rotational force acting toward the first direction to act on the body first portion 311. This further action of the axial rotational force causes the body second portion 312 to move from the second end 142 side of the housing second portion 140 toward the first end 141 side as the body first portion 311 moves further in the first direction. As a result, the body second portion 312 of the lancet body 310 can be positioned between the first end 141 and the second end 142 of the housing second portion 140, and the blade 320 can be housed within the housing 100, similar to the state before use.

[0061] Furthermore, as described above, the present disclosure is premised on the assumption that once the compression coil spring 500 is released from its compressed state and expanded, the expanded state is maintained, and therefore the movable body 400 connected to the compression coil spring 500 does not return to one side of the housing 100 (the right end in FIG. 9 ) after abutting against the other side of the housing cover 200 and / or the housing 100 (the left end in FIG. 12 ), i.e., the housing composite, along the first direction. Therefore, the movable body 400 does not move further, and therefore no force acts on the second body portion 312 of the lancet 300 connected to the movable body 400 to move again toward the second end 142 of the second housing portion 140.

[0062] This allows the blade 320 to remain housed within the housing 100. Therefore, after a small amount of blood sample is taken from an infant using the blade that has once come out of the housing 100, it is possible to preferably prevent the blood-stained blade 320 from coming out of the housing 100 again. This also preferably ensures safety after use of the infant lancet assembly.

[0063] For the above reasons, the present disclosure enables a simple combination of a compression coil spring 500 capable of stretching in one direction in a housing 100 having the above-described characteristic structure, a movable body 400 capable of moving in one direction when biased by the compression coil spring 500, and a lancet 300 connected to the movable body 400 at a predetermined location. In the present disclosure, the infant lancet assembly 1000 having such a simple structure can be used to suitably control the movement of the blade 320 of the lancet 300. In this respect, the infant lancet assembly of the present disclosure is technically significant.

[0064] Although one embodiment of the present disclosure has been described above, it is merely a typical example within the scope of application of the present disclosure. Therefore, it will be readily understood by those skilled in the art that the present disclosure is not limited thereto and that various modifications can be made.

[0065] The above-described embodiment of the present invention also includes the following preferred aspects: First Aspect: An infant lancet assembly comprising: a housing, a lancet, a movable body, and a compression coil spring capable of biasing the movable body in a predetermined first direction, each of which is housed within the housing, the housing having a housing first portion extending longitudinally in the first direction and a housing second portion extending longitudinally from the housing first portion in a second direction perpendicular to the first direction, the lancet having a lancet body and a blade attached to the lancet body, the lancet body having a body first portion mounted so as to be movable integrally with the movable body, and a body second portion capable of mutually engaging with the housing second portion in the first direction, the movable body having a movable body first portion movable in the first direction and mutually engaging with the housing first portion in the second direction, and a movable body second portion mounted so as to be rotatable around the axis of the body first portion. Aspect 2: The infant lancet assembly of Aspect 1, wherein the housing first portion and the housing second portion are arranged to form a T-shape. Aspect 3: The infant lancet assembly of Aspect 1 or Aspect 2, wherein the width dimension of the housing second portion in the first direction is a dimension that allows the body second portion to slide in the second direction relative to the housing second portion. Aspect 4: The infant lancet assembly of Aspects 1 to 3, wherein the width dimension of the housing first portion in the second direction is a dimension that allows the movable body first portion to slide in the first direction relative to the housing first portion. Aspect 5: The infant lancet assembly of Aspects 1 to 4, wherein one of the movable body first portion and the housing first portion is a convex portion and the other is a concave portion. Sixth Aspect: The infant lancet assembly according to any one of the first to fifth aspects, wherein one of the body second portion and the housing second portion is a convex portion and the other is a concave portion.Aspect 7: The infant lancet assembly of any of Aspects 1 to 6, wherein when the movable body moves in the first direction, the body first portion is movable in the first direction integrally with the movable body, while the housing second portion restricts the movement of the body second portion in the first direction. Aspect 8: The infant lancet assembly of Aspect 7, which is dependent on Aspect 6, wherein, between the body second portion and the housing second portion, the convex portion of one is able to abut against an inner surface constituting the concave portion of the other, thereby restricting the movement of the body second portion in the first direction. Aspect 9: The infant lancet assembly of any of Aspects 1 to 8, wherein when the movable body moves in the first direction, the housing first portion restricts the movement of the movable body first portion in the second direction. Aspect 10: The infant lancet assembly of Aspect 9, which is dependent on Aspect 5, wherein the convex portion of one of the movable body first portion and the housing first portion can abut against an inner surface constituting the concave portion of the other of the movable body first portion, thereby restricting movement of the movable body first portion in the second direction. Aspect 11: The infant lancet assembly of Aspect 7 or Aspect 8, wherein restriction of movement of the body second portion in the first direction allows the body first portion to rotate about an axis relative to the movable body. Aspect 12: The infant lancet assembly of Aspect 1 to Aspect 11, wherein when the movable body moves in the first direction, the body first portion can move in the first direction integrally with the movable body, and the body second portion can move in the second direction. Aspect 13: An infant lancet assembly in any of Aspects 1 to 12 above, wherein the longitudinal direction of the housing second part has a first end proximal to the housing first part and a second end distal to the housing first part, and the body second part is positioned between the first end and the second end of the housing second part before the movable body starts to move in the first direction.Aspect 14: The infant lancet assembly of Aspect 13, wherein, when the movable body moves in the first direction, the second body portion moves from the first end to the second end, and then moves from the second end to the first end. Aspect 15: The infant lancet assembly of Aspect 13 or Aspect 14, wherein the housing has an opening through which the blade can protrude, and when the second body portion is located at the second end, the blade can protrude to the outside through the opening of the housing. Aspect 16: The infant lancet assembly of any of Aspects 13 to 15, wherein, when the second body portion is located between the first end and second end of the longitudinal direction of the second housing portion, the blade can be contained within the housing. Aspect 17: The infant lancet assembly of any of Aspects 1 to 16, wherein the housing has two or more housing first portions that extend longitudinally in the first direction and are arranged spaced apart from each other, and the movable body is capable of interlocking with the two or more housing first portions. Aspect 18: The infant lancet assembly of any of Aspects 1 to 17, wherein the housing has a first sub-housing and a second sub-housing, each of which has the housing first portion and the housing second portion, and wherein at least the housing first portions and the housing second portions within both sub-housings are arranged to face each other. Aspect 19: The infant lancet assembly of any of Aspects 1 to 18, wherein the housing further has a housing third portion that is interlocking with the body first portion in the second direction. Aspect 20: The infant lancet assembly of Aspect 18, wherein the body first portion is positionable in the same row on each of the two opposing main surfaces of the lancet body. Aspect 21: The infant lancet assembly of any of Aspects 18 to 20, wherein the body second portion is positionable in the same row on each of the two opposing main surfaces of the lancet body.22nd Aspect: In any of the above 1st to 21st aspects, the movable body further comprises a flexible portion, and further comprises a trigger that can abut against the flexible portion, the flexible portion of the movable body and a predetermined portion of the housing can be engaged with each other before use, and when use begins, the trigger abuts against the flexible portion, and is able to release the engagement between the flexible portion and the predetermined portion of the housing.

[0066] An infant lancet assembly according to one embodiment of the present disclosure is used to obtain a small blood sample from an infant. CROSS-REFERENCE TO RELATED APPLICATIONS

[0067] This application claims priority under the Paris Convention from Japanese Patent Application No. 2022-101365 (filing date: June 23, 2022, title: "Lancet Assembly for Infants"), the entire contents of which are incorporated herein by reference.

[0068] DESCRIPTION OF SYMBOLS 1000 Infant lancet assembly 100 Housing 100A First sub-housing 100B Second sub-housing 110, 120 Housing first part 130 Housing third part 140 Housing second part 141 First end of housing second part 142 Second end of housing second part 150 Housing fourth part 160 Locking part 170 Opening part 200 Housing cover 300 Lancet 310 Lancet body 311 Body first part 312 Body second part 320 Blade 400 Movable body 410 Movable body first part 420 Movable body first part 430 Movable body second part 440 Projection part 450 Flexible part 460 Movable body third part 500 Compression coil spring 600 Trigger 700 stopper

Claims

1. The device includes a housing, a lancet, a movable body, and a compression coil spring capable of biasing the movable body in a predetermined first direction, the lancet and the movable body being accommodated in the housing, the housing includes a housing first portion having a longitudinal direction extending in the first direction, and a housing second portion having a longitudinal direction extending from the housing first portion in a second direction perpendicular to the first direction, The lancet comprises a lancet body and a blade attached to the lancet body, the lancet body includes a body first portion that is disposed so as to be movable together with the movable body, and a body second portion that is capable of being engaged with the housing second portion in the first direction; The infant lancet assembly comprises a movable body first part that is movable in the first direction and is mutually engageable with the housing first part in the second direction, and a movable body second part to which the body first part is arranged so as to be rotatable about an axis.

2. The infant lancet assembly according to claim 1 , wherein the first housing portion and the second housing portion are arranged to form a T-shape.

3. 3. The infant lancet assembly according to claim 1, wherein the width dimension of the housing second portion in the first direction is a dimension that allows the body second portion to slide relative to the housing second portion in the second direction.

4. 3. The infant lancet assembly according to claim 1, wherein the width dimension of the housing first portion in the second direction is a dimension that enables the movable body first portion to slide in the first direction relative to the housing first portion.

5. 3. The infant lancet assembly according to claim 1, wherein one of the movable body first portion and the housing first portion is a convex portion, and the other is a concave portion.

6. 3. The infant lancet assembly according to claim 1, wherein one of the body second portion and the housing second portion is a convex portion and the other is a concave portion.

7. An infant lancet assembly as described in claim 6, wherein when the movable body moves in the first direction, the body first part is movable in the first direction integral with the movable body, while the housing second part restricts the movement of the body second part in the first direction.

8. An infant lancet assembly as described in claim 7, wherein between the body second part and the housing second part, one of the convex parts is capable of abutting against an inner surface constituting the other of the concave parts, thereby restricting movement of the body second part in the first direction.

9. The infant lancet assembly according to claim 5 , wherein when the movable body moves in the first direction, the movement of the movable body first part in the second direction is restricted by the housing first part.

10. An infant lancet assembly as described in claim 9, wherein between the movable body first part and the housing first part, one of the convex parts is capable of abutting against an inner surface constituting the other of the concave parts, thereby making it possible to restrict movement of the movable body first part in the second direction.

11. The infant lancet assembly according to claim 7 , wherein the restriction of movement of the second body part in the first direction makes the first body part rotatable about an axis relative to the movable body.

12. An infant lancet assembly as described in claim 1 or 2, wherein when the movable body moves in the first direction, the first body part is movable in the first direction together with the movable body, and the second body part is movable in the second direction.

13. 2. The infant lancet assembly of claim 1, wherein the longitudinal direction of the second housing part has a first end proximal to the first housing part and a second end distal to the first housing part, and the second body part is positioned between the first end and the second end of the second housing part before the movable body starts to move in the first direction.

14. The infant lancet assembly of claim 13, wherein when the movable body moves in the first direction, the second body portion moves from the first end side to the second end side, and then moves from the second end side to the first end side.

15. An infant lancet assembly as described in claim 13 or 14, wherein the housing has an opening through which the blade can protrude, and when the body second part is positioned on the second end side, the blade can protrude outside through the opening of the housing.

16. An infant lancet assembly as described in claim 13 or 14, wherein the blade is receivable within the housing when the body second part is positioned between the first and second longitudinal ends of the housing second part.

17. An infant lancet assembly as described in claim 1 or 2, wherein the housing has two or more housing first parts extending longitudinally in the first direction and arranged at a distance from each other, and the movable body is capable of engaging with the two or more housing first parts by projection and recess.

18. The infant lancet assembly of claim 1, wherein the housing comprises a first sub-housing and a second sub-housing, each of the first sub-housing and the second sub-housing comprises the housing first portion and the housing second portion, and at least the housing first portions and the housing second portions within both sub-housings are arranged in an opposing relationship.

19. 3. The infant lancet assembly according to claim 1, wherein the housing further comprises a housing third portion capable of being convexly and concavely engaged with the body first portion in the second direction.

20. 19. The infant lancet assembly according to claim 18, wherein the body first portion is capable of being aligned in the same row on each of two mutually opposing main surfaces of the lancet body.

21. 21. The infant lancet assembly according to claim 18 or 20, wherein the second body portion can be arranged in the same row on each of two mutually opposing main surfaces of the lancet body.

22. 3. The infant lancet assembly of claim 1 or 2, wherein the movable body further has a flexible portion and a trigger capable of abutting against the flexible portion, the flexible portion of the movable body and a predetermined portion of the housing are capable of engaging with each other before use, and when use begins, the trigger abuts against the flexible portion, thereby disengaging the flexible portion from the predetermined portion of the housing.