JP5010953B2 - Blood collection holder - Google Patents

Description

  The present invention relates to a blood collection holder (needle holder) used when collecting blood in a blood collection container (blood collection tube).

  Usually, when collecting blood used for various blood tests in a blood collection container such as a blood collection tube, a blood collection holder is used.

  As a conventional blood collection holder, a holder having a holder main body for storing a blood collection tube and a support portion that is provided at a proximal end portion of the holder main body and supports a needle body is known (for example, Patent Document 1 and Patent). Reference 2).

  The blood collection holder described in Patent Literature 1 has a cylindrical holder body made of a resin material such as polypropylene, and a plurality of thin-walled portions (integral hinges) formed along its longitudinal direction. Has been. Moreover, these thin parts are arrange | positioned at equal intervals along the circumferential direction of a holder main body, respectively. The holder main body can be easily deformed by each thin portion. Thereby, the shape of the holder body can be changed between a first state in which the shape is cylindrical and the blood collection tube can be accommodated, and a second state in which the holder body is folded by the thin portion.

  In addition, the blood collection holder described in Patent Document 2 is configured by four wall portions in which the holder main bodies are connected to each other, and adjacent wall portions can be rotated with respect to each other via a connection portion (boundary portion). It has become. As a result, the holder body has a rectangular tube shape and can be changed into a first state in which a blood collection tube can be accommodated and a second state in which each wall portion is rotated and folded from the first state. can do.

  However, in the blood collection holders described in Patent Document 1 and Patent Document 2, the thickness can be kept small in the second state, and the vacuum blood collection tube is inserted in the first state. Depending on (for example, the gripping position or gripping force), the holder main body is crushed and the cylindrical shape (shape) is collapsed. For this reason, there has been a problem that the blood collection tube cannot be inserted into the blood collection holder.

JP-T-2-503281 Special Table 2003-505185

  The object of the present invention is to reduce the thickness of the blood collection holder in the immersed state (folded state) more than in the expanded state, and to maintain the shape of the holder body in the expanded state (used state). It is to provide.

Such an object is achieved by the present inventions (1) to (10) below.
(1) A blood collection holder comprising a holder main body having an internal space into which a blood collection container is inserted, and a bottom portion provided at a proximal end portion of the holder main body and fitted with a hollow needle having a sharp needle tip,
The holder body is
A fixed wall fixed to the bottom and arranged to surround a part of the outer peripheral side of the hollow needle;
One movable wall supported displaceably with respect to the fixed wall,
The movable wall is displaceable between an immersion state where the movable wall is immersed toward the center side of the holder main body and an expanded state where the movable wall is expanded outward from the immersed state. The movable wall and the fixed wall are configured to form the cylindrical internal space ,
A blood collection holder , wherein the fixed wall is provided with a rotation support portion that rotatably supports the movable wall .

(2) Each of the fixed wall and the movable wall is curved outward.
The blood collection holder according to (1) , wherein the holder body is configured such that the fixed wall and the movable wall form the substantially cylindrical inner space in the deployed state.

(3) The bottom portion has a deficient portion deficient in a bow shape at a position corresponding to the movable wall,
In the expanded state, the edge of the defect portion is located inside the movable wall,
In the immersion state, the blood collection holder according to (2) , wherein at least a part of the movable wall is located inside an edge of the defect portion.

(4) The fixed wall has a flange formed so as to protrude from the outer peripheral portion thereof,
The flange according to any one of (1) to (3) , wherein a part of the flange is missing or not formed in a portion opposite to the movable wall in the deployed state through the internal space. Blood collection holder.

(5) The blood collection holder according to any one of (1) to (4) , further including a deployment means for deploying the holder body in the immersed state until reaching the deployed state.

(6) The blood collection holder according to (5) , wherein the deployment means includes an operation unit that is provided on the movable wall and operates the movable wall with a finger.

(7) The blood collection holder according to any one of (1) to (6) , further including an immersion state maintaining means for maintaining the immersion state.

(8) The immersion state maintaining means includes a recess provided in an inner peripheral portion of the fixed wall, and an engagement portion provided in an edge portion of the movable wall and engaged with the recess in the immersion state. The blood collection holder according to (7) above .

(9) The blood collection holder according to any one of (1) to (8) , further including a deployment state maintaining means for maintaining the deployment state.

(10) The blood collection holder according to (9) , wherein the deployed state maintaining means includes a claw portion that is provided on the movable wall and engages with the fixed wall in the deployed state.

  The circumferential length of the outer peripheral portion of the movable wall is preferably 0.6 to 0.95 times the circumferential length of the outer peripheral portion of the fixed wall.

  The operation part is constituted by a protrusion protruding from an outer peripheral part of the movable wall, and the unfolding means is provided on the fixed wall and guides the protrusion when operating the movable wall. It is preferable to further have a guide groove.

  According to the present invention, since the movable wall is immersed toward the center portion side of the holder body in the immersed state (folded state), the thickness of the blood collection holder can be reduced compared to the expanded state. . Thereby, for example, when the immersive blood collection holder is packaged, the size of the package can also be suppressed. Further, the size of the packaging member itself for packaging the blood collection holder can also be suppressed.

  In the expanded state, the movable wall is reliably expanded outward, and a continuous wall portion is formed by the expanded movable wall and the fixed wall. Thereby, the whole shape of the blood collection holder is surely cylindrical, and further, the cylindrical shape is maintained.

  Further, when the deployment means is provided, when the immersive holder main body is set in the expanded state, for example, the fingertip is prevented from touching the tip of the hollow needle, so that the deployment operation can be performed safely. .

  Moreover, when this expansion | deployment means has the operation part and guide groove comprised by the protrusion, the operation with respect to an operation part can be performed smoothly, Therefore, a movable wall displaces easily and reliably.

Hereinafter, the blood collection holder of the present invention will be described in detail based on preferred embodiments shown in the accompanying drawings.
1 is a perspective view showing a blood collection holder (immersion state) according to the present invention, FIG. 2 is a view (plan view) of the blood collection holder shown in FIG. 1 as viewed from the distal end side, and FIG. FIG. 4 is a perspective view showing the blood collection holder (deployed state) of the present invention, FIG. 5 is a view (plan view) of the blood collection holder shown in FIG. 6 is a cross-sectional view taken along the line BB in FIG. 4, and FIG. 7 is a cross-sectional view taken along the line CC in FIG. In the following description, for convenience of explanation, the upper side in FIGS. 1, 3, 4, 6, and 7 is referred to as a “tip”, and the lower side is referred to as a “base end”. 3 and 7, the needle body is omitted.

  The blood collection holder 1 shown in each figure is a blood collection holder assembly with a hollow needle 20 attached to the inside thereof (blood collection holder assembly). The hollow needle 20 includes a long needle body 201, a hub 202 fixed to a proximal end portion of the needle body 201, and a rubber sheath (covering member) 204 (see FIGS. 2 and 5). The needle body 201 has a sharp needle tip 203 at its tip (see FIG. 6). The hub 202 is a member that fixes the needle body 201 to the blood collection holder 1, and has a cylindrical shape whose diameter is larger than that of the needle body 201.

Moreover, it is not specifically limited as what is installed in the base end side of the hollow needle 20, However, In this embodiment, the blood bag (blood bag for a test | inspection) (not shown) which stores the blood used for various blood tests Is an example. The blood bag is connected to the hub 202 via a tube or a connector and communicates with the needle body 201.
A sharp needle tip may be formed on the proximal end side of the hollow needle 20 in the same manner as the distal end side. That is, the hollow needle 20 may be a double-ended needle. In this case, blood used for various blood tests can be collected directly from a donor (donor or patient) as well as from a blood bag.

  As shown in FIGS. 1 and 4, the blood collection holder 1 has a holder body 2 and a bottom plate (bottom part) 5 formed integrally with the base end portion of the holder body 2. This blood collection holder 1 is in an immersive state (state shown in FIG. 1) in which a movable wall 4 (described later) of the holder body 2 is immersed inside, and an unfolded state (state shown in FIG. 4) in which the movable wall 4 is deployed from the immersive state It is comprised so that it can deform | transform into.

  The unused blood collection holder 1 is in an immersive state and is packaged (contained) by a packaging member (not shown) such as a blister packaging material. When this blood collection holder 1 is used, it is taken out from the packaging member. The blood collection holder 1 packaged by the packaging member may be one in which the hollow needle 20 is mounted in advance (blood collection holder assembly), or the hollow needle 20 may be unmounted.

  As shown in FIG. 4, the blood collection holder 1 is in a deployed state, and a blood collection tube (blood collection container) 30 for taking out (collecting) blood from the blood bag is inserted from the distal end side. The blood collection tube 30 includes a main body 301 having a bottomed cylindrical shape and a plug 302 that seals the opening of the main body 301. The main body 301 has a substantially circular cross-sectional shape and is made of a material having transparency such as various resin materials (for example, polypropylene) and various glass materials. The plug 302 has a disk shape and is made of a rubber material such as isoprene rubber. The blood collection holder 1 has the hollow needle 20 attached to the bottom plate 5 in the deployed state.

Next, each part (member) constituting the blood collection holder 1 will be described.
As shown in FIG. 1, the bottom plate 5 has a flat plate shape, and has a fixing portion 51 for mounting (supporting) the hollow needle 20 at the center thereof. The fixing portion 51 is a tubular portion projecting in the proximal direction. The hollow needle 20 is attached to the fixing portion 51 by, for example, fitting or screwing the hub 202 of the hollow needle 20.

  Further, the bottom plate 5 is formed with an edge portion 52 having an arc shape (C shape) with the fixed portion 51 as the center (see FIG. 2). When it is assumed that the edge 52 has a circular arc, it can be said that the bottom plate 5 has a deficient portion formed in an arcuate shape. A flat edge 53 is formed (formed) by the defect. The edge 53 connects both ends of the edge 52.

  With the bottom plate 5 having such a shape, the thickness of the entire blood collection holder 1 can be reliably suppressed in the immersed state. Therefore, for example, when the immersed blood collection holder 1 is packaged, the size of the package can also be suppressed. Further, the size of the packaging member itself for packaging the blood collection holder 1 can also be suppressed.

  As shown in FIGS. 1 to 3, the holder main body 2 has a fixed wall 3 fixed to the bottom 5 and a movable wall 4 supported by the fixed wall 3 so as to be rotatable (displaceable). ing. An inner space 21 is defined (formed) inside the holder body 2 by the fixed wall 3 and the movable wall 4. In this internal space 21, the hollow needle 20 (needle body 201) fixed to the fixing portion 51 of the bottom portion 5 is located (contained).

  The fixed wall 3 is erected from the edge 52 of the bottom plate 5. The fixed wall 3 is formed along the edge 52 of the bottom plate 5. Thereby, like the edge part 52, the fixed wall 3 makes the substantially circular arc shape curved toward the outside centering on the fixed part 51. Therefore, the fixed wall 3 can surround a part of the outer peripheral side of the hollow needle 20 (see FIGS. 2 and 5).

  A plate-like flange 321 is formed on the front end side of the outer peripheral portion 32 of the fixed wall 3 so as to protrude from the edge portion 31 to the edge portion 37 on the opposite side. When the blood collection tube 30 is pushed (inserted) into the inner space 21 of the blood collection holder 1 in the expanded state, a portion facing the hollow needle 20 (inner space 21) of the flange 321 (hereinafter, this portion is referred to as “finger hook”). The operation can be performed by placing a finger on each part 322). In addition, since the flange 321 is not provided on the movable wall 4 but is provided on the fixed wall 3, the finger can be stably hung on the finger hanging portion 322 (flange 321) when performing the pushing operation. . Thereby, pushing operation (insertion operation) can be performed reliably.

  Further, the flange 321 is formed over the entire outer peripheral portion 32 of the fixed wall 3, but the width thereof is not uniform. That is, the flange 321 has the largest width at each finger hanging portion 322, and a portion excluding them (the portion opposite to the movable wall 4 in the deployed state via the hollow needle 20 (hereinafter, this portion is referred to as “non-finger hanging portion”). 323 "))), the width is suppressed (partially missing).

  As described above, when the blood collection tube 30 is pushed into the blood collection holder 1 in the expanded state, the operation is performed by placing fingers on the respective finger hanging portions 322. Therefore, since the non-finger hanging portion 323 is unlikely to be a portion where a finger is hung due to its function, the width can be suppressed. Thereby, in the immersion state, the size of the blood collection holder 1 can be suppressed by the amount of the non-finger portion 323.

  The flange 321 is not limited to the one formed over the entire outer peripheral portion 32 of the fixed wall 3, and has, for example, a portion that is not formed in a part of the outer peripheral portion 32 of the fixed wall 3. May be. In other words, the flange 321 is not limited to the one having the two finger hook portions 322 and the non-finger hook portion 323 positioned between them, and for example, the non-finger hook portion 323 may be omitted.

  As shown in FIG. 3, a first recess (recess) 34 is formed in the inner peripheral portion 33 of the fixed wall 3 along the longitudinal direction of the blood collection holder 1. The first concave portion 34 has a substantially triangular cross-sectional shape, and the edge (first engagement portion 44) of the immersed movable wall 4 engages (enters) inside thereof. Thereby, the immersion state is maintained. For example, when the blood collection holder 1 is wrapped in a packaging member in an immersive state, it is possible to reliably prevent the movable wall 4 from rotating unintentionally within the packaging member, that is, unintentionally deployed. it can. Thus, the 1st recessed part 34 has a function as an immersion state maintenance means to maintain an immersion state.

  Further, as shown in FIG. 3, a protrusion 341 is formed in the vicinity of the edge 37 side of the first recess 34. This ridge 341 can be engaged with the outer peripheral portion 42 of the movable wall 4 in the immersed state. Thereby, maintenance of the immersion state by the 1st recessed part 34 is assisted, Therefore, an immersion state can be maintained more reliably.

  Moreover, the rotation support part 35 which supports the movable wall 4 so that rotation is possible is provided in the edge part 31 of the fixed wall 3 (for example, refer FIG. 2, FIG. 3). Thereby, the movable wall 4 rotates about the rotation support part 35 as a rotation center.

  Although it does not specifically limit as a structure of the rotation support part 35, For example, it may be comprised by the rotating shaft and the bearing, and was comprised by the thin part integrally formed with the edge part 31. It may be a thing. With such a configuration, the movable wall 4 can be easily and reliably rotated with respect to the fixed wall 3.

  In the vicinity of the edge 37 of the inner peripheral portion 33 of the fixed wall 3, a second recess 38 is formed along the longitudinal direction of the blood collection holder 1. As shown in FIG. 7, the edge (first engagement portion 44) of the movable wall 4 in the deployed state engages with the second recess 38.

  As shown in FIGS. 1 and 4, a guide groove 36 is provided on the edge 37 side of the fixed wall 3 along the circumferential direction. The guide groove 36 penetrates the fixed wall 3 in the thickness direction, and an operation portion 41 (described later) of the movable wall 4 protrudes (exposes) from the inner peripheral portion 33 side. The guide groove 36 is a part that guides the operation unit 41 when the movable wall 4 is rotated.

  The movable wall 4 is rotatably supported by the fixed wall 3 via a rotation support portion 35. The movable wall 4 can take an immersive state in which it is immersed toward the center (fixed portion 51) side of the holder body 2 and a deployed state in which the movable wall 4 is expanded outward from the immersive state by rotating. When the movable wall 4 rotates (deploys), the lower end portion of the movable wall 4 may slide with respect to the bottom plate 5, or the lower end portion of the movable wall 4 is slightly separated from the bottom plate 5. The bottom plate 5 may be rotated without contacting.

  The movable wall 4 is composed of a plate piece curved outward. The circumferential length of the outer peripheral portion 42 of the movable wall 4 is preferably 0.6 to 0.95 times the circumferential length of the outer peripheral portion 32 of the fixed wall 3, and is 0.7 to 0.00. It is more preferably 9 times.

  When the circumferential length of the outer peripheral portion 42 of the movable wall 4 is within such a numerical range, most of the movable wall 4 is reliably located inside the bottom plate 5 in the immersion state (see FIG. 2). Thereby, it is suppressed as much as possible that the movable wall 4 protrudes from the edge 53 of the corresponding bottom plate 5 in the immersion state. Therefore, the size of the entire blood sampling holder 1 is more reliably suppressed. be able to. For example, when the immersed blood collection holder 1 is packaged, the size of the package can be suppressed.

  Further, since the shape of the movable wall 4 is curved outward, the inner peripheral portion 43 is prevented from touching the hollow needle 20 in the immersed state. Thereby, the unintentional deformation | transformation (for example, bending and bending) of the needle main body 201 of the hollow needle 20 can be prevented reliably.

  In addition, a contact portion 45 that contacts the flange 321 of the fixed wall 3 is provided at the distal end portion of the movable wall 4. The contact portion 45 slides on the flange 321 when the movable wall 4 rotates. By providing the contact portion 45, the movable wall 4 can be smoothly rotated.

  As described above, in the immersion state, the edge of the movable wall 4 opposite to the center of rotation is engaged with the first recess 34 of the fixed wall 3 (see FIG. 3). Thereby, an immersion state can be maintained reliably. Further, the edge portion is a first engaging portion 44 that engages with the first concave portion 34 in the immersed state. As described above, in the blood sampling holder 1, the first engagement portion 44 of the movable wall 4 and the first concave portion 34 of the fixed wall 3 constitute an immersion state maintaining unit that maintains the immersion state.

  On the outer peripheral portion 42 of the movable wall 4, there is provided an operation portion 41 as an unfolding means for unfolding the immersed holder body 2 until it reaches the unfolded state. The operation portion 41 is an edge portion of the movable wall 4 and is disposed at a position different from the first engagement portion 44.

  The operation part 41 is constituted by a protrusion formed so that the movable wall 4 can be rotated by placing a finger on the protrusion. When the operation unit 41 is operated with respect to the movable wall 4 (first engagement portion 44) engaged with the fixed wall 3 (first recess 34) in the immersed state, first, the first engagement portion 44 begins to move from the first recess 34 and then climbs over the ridge 341. Thereby, maintenance of an immersion state is cancelled | released. When the operation unit 41 is further operated, the movable wall 4 is rotated outward along with the operation unit 41, and finally is in a deployed state.

  The operation unit 41 moves along the guide groove 36 when the operation unit 41 is operated. Thereby, operation with respect to the operation part 41 can be performed smoothly, Therefore, the movable wall 4 rotates easily and reliably.

  As shown in FIG. 7, in the unfolded state, the first engaging portion 44 of the movable wall 4 engages with the second recess 38 of the fixed wall 3. Thereby, a deployment state can be maintained reliably. For example, when the blood collection tube 30 is to be inserted into the blood collection holder 1 in the expanded state, it is possible to reliably prevent the movable wall 4 from rotating unintentionally, that is, unintentionally immersing.

  A small protrusion (not shown) that protrudes toward the center of the holder body 2 is formed in the vicinity of the ridge 341 side of the second recess 38 of the fixed wall 3. Thereby, the movable wall 4 is slightly bent by receiving a reaction force from the small protrusion just before the first engaging portion 44 is engaged with the second recess 38. When the movable wall 4 gets over the small protrusion, the reaction force is released, and the shape of the movable wall 4 is restored, that is, the first engaging portion 44 is deformed so as to face the second recess 38. . Thereby, the 1st engaging part 44 is reliably engaged by the 2nd recessed part 38, Therefore, a deployment state can be maintained more reliably.

  Further, as shown in FIG. 6, the operation portion 41 is formed with a second engagement portion (claw portion) 411 that protrudes inward. The second engaging portion 411 engages with a columnar columnar portion 371 formed between the guide groove 36 and the edge portion 37 of the fixed wall 3 in the expanded state. Thereby, a deployment state can be maintained more reliably.

  As described above, the blood collection holder 1 is configured such that the first engagement portion and the second engagement portion are engaged with the predetermined portions of the fixed wall 3 in the expanded state. It can be said that it functions as a maintenance state maintaining means for maintaining.

  Moreover, since the unfolded state is maintained at a plurality of locations, the strength of the holder body 2 in the unfolded state increases. Thereby, the shape of the holder body 2 is maintained regardless of the gripping state (for example, the gripping position or gripping force) with respect to the holder body.

  As shown in FIG. 4, in the unfolded state, the movable wall 4 and the fixed wall 3 form a continuous wall. Thereby, the holder main body 2 has a cylindrical shape as a whole, and thus the blood collection tube 30 can be reliably inserted into the internal space 21 from the distal end side. When the blood collection tube 30 is inserted, the needle body 201 pierces the plug 302. Thereby, the blood collection tube 30 and the blood bag communicate with each other through the needle body 201, and blood can be taken into the blood collection tube 30 from this blood bag. Note that the blood collection holder 1 is discarded after the blood collection holder 1 is used. At this time, the blood collection holder 1 may be discarded again as an immersive state.

  Further, as shown in FIGS. 5 and 7, the edge 53 of the bottom plate 5 is positioned inside the movable wall 4 in the unfolded state. Thereby, in the immersion state, the edge part 53 of the baseplate 5 does not protrude, and the thickness of the blood collection holder 1 can be suppressed small.

  Further, the constituent material of the holder body 2 (including the bottom plate 5) is not particularly limited, but for example, polyolefin such as polyethylene, polypropylene, ethylene-vinyl acetate copolymer, polyurethane, polyamide, polyester, polycarbonate, polybutadiene, poly Various resin materials such as vinyl chloride are listed. By using such a constituent material, for example, the fixed wall 3 and the bottom portion 5 can be easily formed integrally with a mold, for example.

  As described above, the illustrated embodiment of the blood collection holder of the present invention has been described. However, the present invention is not limited to this, and each part constituting the blood collection holder has an arbitrary configuration that can exhibit the same function. Can be substituted. Moreover, arbitrary components may be added.

  Further, in the present embodiment, the blood bag is taken as an example of the one installed on the proximal end side of the needle body. However, the blood bag is not limited thereto. For example, the needle tube is supported by the needle hub and communicates with the needle body body. It may be. In this case, the needle body is a double-ended needle.

It is a perspective view which shows the blood collection holder (immersion state) of this invention. It is the figure (plan view) which looked at the blood collection holder shown in FIG. 1 from the front end side. It is the sectional view on the AA line in FIG. 1, and its partial enlarged view. It is a perspective view which shows the blood collection holder (expanded state) of this invention. It is the figure (plan view) which looked at the blood collection holder shown in FIG. 4 from the front end side. It is the BB sectional view taken on the line in FIG. It is CC sectional view taken on the line in FIG.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Blood collection holder 2 Holder main body 21 Internal space 3 Fixed wall 31 Edge part 32 Outer part 321 Flange 322 Finger hook part 323 Non-finger hook part 33 Inner peripheral part 34 1st recessed part 341 Projection 35 Rotation support part 36 Guide groove 37 Edge part 371 Columnar part 38 2nd recessed part 4 Movable wall 41 Operation part 411 2nd engaging part (claw part)
42 outer peripheral portion 43 inner peripheral portion 44 first engaging portion 45 abutting portion 5 bottom plate (bottom portion)
51 Fixed portion 52, 53 Edge 20 Hollow needle 201 Needle body 202 Hub 203 Needle tip 204 Rubber sheath (coating member)
30 Blood collection tube (blood collection container)
301 Main body 302 Plug body

Claims (10)

A blood collection holder comprising a holder main body having an internal space into which a blood collection container is inserted, and a bottom portion provided at a base end portion of the holder main body and fitted with a hollow needle having a sharp needle tip,
The holder body is
A fixed wall fixed to the bottom and arranged to surround a part of the outer peripheral side of the hollow needle;
One movable wall supported displaceably with respect to the fixed wall,
The movable wall is displaceable between an immersion state where the movable wall is immersed toward the center portion side of the holder body and an expanded state where the movable wall is expanded outward from the immersed state. The movable wall and the fixed wall are configured to form the cylindrical internal space ,
A blood collection holder , wherein the fixed wall is provided with a rotation support portion that rotatably supports the movable wall . The fixed wall and the movable wall are each curved outward.
The blood collection holder according to claim 1 , wherein the holder body is configured so that the fixed wall and the movable wall form the substantially cylindrical internal space in the deployed state. The bottom portion has a deficient portion deficient in an arcuate shape at a position corresponding to the movable wall;
In the expanded state, the edge of the defect portion is located inside the movable wall,
The blood sampling holder according to claim 2 , wherein at least a part of the movable wall is located inside an edge of the defect in the immersed state. The fixed wall has a flange formed so as to protrude from the outer peripheral portion thereof,
The blood sampling holder according to any one of claims 1 to 3 , wherein a part of the flange is missing or not formed at a portion opposite to the movable wall in the deployed state through the internal space. The blood collection holder according to any one of claims 1 to 4 , further comprising a deployment means for deploying the holder body in the immersed state until reaching the deployed state. The blood collection holder according to claim 5 , wherein the expansion means includes an operation unit that is provided on the movable wall and operates the movable wall with a finger. The blood collection holder according to any one of claims 1 to 6 , further comprising an immersion state maintaining means for maintaining the immersion state. The immersion state maintaining means includes a recess provided in an inner peripheral portion of the fixed wall, and an engagement portion provided at an edge of the movable wall and engaged with the recess in the immersion state. The blood collection holder according to claim 7 . The blood collection holder according to any one of claims 1 to 8 , further comprising an expanded state maintaining means for maintaining the expanded state. The blood collection holder according to claim 9 , wherein the expanded state maintaining means includes a claw portion provided on the movable wall and engaged with the fixed wall in the expanded state.

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