JPH1033509A - Holder for vacuum blood taking and method for fixing and detaching blood taking needle - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a holder for vacuum blood taking with which pricking accidents are drastically decreased at the time of removing a blood taking needle from this holder after the end of blood taking and the method for fixing and detaching the blood taking needle. SOLUTION: This cylindrical holder for vacuum blood taking has an aperture 11 for insertion of a vacuum blood taking tube at one end and has a blood taking needle fixing mechanism at the other end. A holder body 1 is provided with a notched window 15 from the end face on the blood taking needle fixing side of this body 1 to the flank succeeding thereto. A guide frame 2 contg. a core 3 slidable forward and backward within the plane orthogonal with the central axis of the holder is placed on the end face. This core 3 has a tweezers structure. The core 3 has the structure to open and close its moving ends 36 to the right and left by the forward and backward slide of the core 3 while maintaining the contact with the inside wall surface of the guide frame 2 and to clamp and fix or detach the needle base 42 (or 51) of the blood taking needle 4 (or 5).

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a vacuum blood sampling holder used in a so-called vacuum blood sampling system for collecting blood in a clinical test using blood as a sample, and a method of fixing and detaching a blood sampling needle using the holder.

[0002]

2. Description of the Related Art A typical vacuum blood collection system includes, for example,
As described in Japanese Patent Application Laid-Open No. 62-227316, the basic configuration of the system is such that the open end of the bottomed tubular container has a needle hole sealing property and a gas barrier property as shown in FIGS. A vacuum blood collection tube 100 hermetically sealed with a stopper 110 provided, and the inside thereof is kept under reduced pressure, and is composed of a single hollow metal thin tube.
0, 220, and a vacuum blood collection needle 200 having a needle base 230 with a male thread at the middle part (the needle tube on the needle point 220 side is a piercing side of the plug 110 of the vacuum blood collection tube 100 during blood collection). However, when the vacuum blood collection tube 100 is replaced and blood is continuously collected, in order to prevent blood from spilling at the time of replacement, the needle tube is made of a telescopic rubber sheath tube 240.
It has a fixing hole 310 with a female screw thread for screwing and fixing the blood collection needle, and a vacuum blood collection holder 300 that holds the vacuum blood collection tube 100 in the lumen 320. .

In collecting blood, the needle base 230 of the blood collection needle is screwed into the fixing hole 310 of the holder 300. As shown in FIG. 23, the blood-collecting person holds the whole blood-collecting needle / holder assembly in a hand so as to lie in the direction along the blood vessel axis of the blood-collecting person, and attaches the needle tip 210 on the blood vessel piercing side to the blood vessel. Pierce. Next, when the vacuum blood collection tube 100 is inserted into the holder 300 and the plug 110 is pierced with the needle tip 220 on the plug piercing side, blood is aspirated because the inside of the vacuum blood collection tube 100 is under reduced pressure. It has become.

[0004] By the way, when blood is collected using this system, a problem arises when the blood collection needle is attached to the cover cap before the blood collection needle is removed from the holder after the blood collection is completed, and the hand is out of order. An accident that stabs a fingertip occurs.

One of the means proposed to solve this problem is to increase the size of the cover cap of the blood collection needle or to register the registered utility model publication No. 30172.
No. 73 is to enlarge only the cap opening portion like a trumpet. However, since the capping operation is essentially the operation of bringing the fingertip close to the tip of the blood collection needle, no matter how large the cap may be, the possibility that the hand slips and an accident does not disappear, and the packaging box becomes larger There is also the problem of bulkiness. On the other hand, Japanese Patent Laid-Open No. 5-2
Japanese Patent Application Laid-Open No. 69174 proposes a dedicated needle removing device for automatically removing the needle without using a cover cap or the like. This device automatically removes screws.
Certainly, the safety is remarkably improved, but the cost of the apparatus is high and the maintenance is burdensome. Although there is a manual screw removal mechanism, the burden of preparing a dedicated device remains unchanged.

[0006]

SUMMARY OF THE INVENTION The present invention has been made to solve the above problems, and has as its object to remove the blood collection needle from the holder after the blood collection is completed without the need to move the finger close to the needle tip. An object of the present invention is to provide a vacuum blood collection holder which does not require a dedicated device for removing a needle, and a method for fixing and detaching a blood collection needle using the holder.

[0007]

The holder for vacuum blood collection according to the present invention is a cylindrical vacuum blood collection holder having an opening for inserting a blood collection tube at one end and a blood collection needle fixing mechanism at the other end. The holder main body is provided with a cutout window extending through the end face of the main body on the side where the blood collection needle is fixed, and a side surface following the end face, and the end face is slidable back and forth in a plane perpendicular to the holder central axis. A guide frame containing a core is mounted, and the core has a tweezer structure, and the core slides back and forth while contacting the inner wall surface of the guide frame, thereby moving the core. It is characterized in that the end has a structure that opens and closes left and right to hold and fix or detach the needle base of the blood collection needle.

In the method for fixing and detaching a blood collection needle according to the present invention, when the blood collection needle is fixed to the vacuum blood collection holder according to claim 1, the notch is held while holding the blood collection needle parallel to the central axis of the holder main body. By moving the blood collection needle from the side surface of the holder to near the center axis of the holder through the window, the movable end of the core is brought into contact with the inner wall surface of the guide frame so as to slide back, and the blood collection needle is attached to the movable end. The needle base is gripped and fixed, and detached by the reverse procedure.

As the blood collection needle that can be fixed by the holder of the present invention, any conventional blood collection needle can be applied.
For example, a needle base 41 such as the blood collection needle 4 shown in FIG.
There is a so-called one-touch type in which the thread is not cut, and a thread having a threaded needle base 51 such as the blood collection needle 5 shown in FIG. In addition, the needle base 41 of the blood collection needle 4 is configured to have a reduced diameter portion 41b sandwiched between a flange 41a and a flange 41c, and the needle base 51 of the blood collection needle 5 includes a flange 51a,
It is configured to have a male screw portion 51b.

[0010]

The vacuum blood collection holder of the present invention has a structure in which a core sliding on the inner wall surface of the guide frame holds the needle base of the blood collection needle in place. To fix the blood collection needle, the blood collection needle is introduced into the holder sideways through a cutout window in the side wall of the holder while the central axis of the blood collection needle is kept parallel to the central axis of the holder. At this time, when the needle base of the blood collection needle is applied to the movable end of the core and pressed near the center axis of the holder, the movable end closes and the blood collection needle can be fixed to tighten the needle base. The subsequent vacuum blood sampling procedure itself may follow a conventionally known procedure.

On the other hand, when detaching the blood collection needle, the blood collection needle is ejected through a path opposite to the fixed state by pushing the opposite side of the movable end of the core. It may be received in an empty metal can or the like. Therefore, when the blood collection needle is detached, there is no need to put the cover cap on the blood collection needle, that is, since there is no operation of holding the finger toward the needle tip of the blood collection needle, a needle stick accident can be prevented.

In the method for fixing and detaching a blood collection needle according to the present invention, when fixing the blood collection needle to the vacuum blood collection holder according to claim 1, the blood collection needle is held parallel to the central axis of the holder main body. By moving the blood collection needle from the side surface of the holder to the vicinity of the center axis of the holder through the cutout window of the holder, the movable end of the core is brought into contact with the inner wall surface of the guide frame so as to slide and recede. Since the needle of the blood collection needle is held in place and fixed and removed in the reverse order, it is not necessary to put a cover cap on the blood collection needle when removing the blood collection needle, that is, hold your finger in the direction of the needle of the blood collection needle. Since there is no moving operation, a needle stick accident can be prevented.

[0013]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below with reference to the drawings. FIG. 2 is a perspective view showing an example of the vacuum blood collection holder of the present invention. The holder for vacuum blood collection according to the present invention comprises a holder main body 1, a guide frame 2 placed on one end surface of the holder main body 1, and a core 3 built in the guide frame 2.

FIG. 3 is a perspective view showing the holder main body 1. As shown in FIG. The holder body 1 is formed of a cylindrical body having one end opened and the other end closed. The open end side is a side into which a vacuum blood collection tube is inserted. In order to make it easier to grasp the main body 1, a part of the circumference of a circular flange is cut in parallel like a conventional vacuum blood collection holder, and a flange-like flange 12 having a substantially elliptical structure is formed. Is provided. The closed end side is the side on which the blood collection needle is fixed, and a cutout window 15 is provided on the end surface 13 and the side surface 14 following the end surface 13. The cutout window 15 starts from a substantially central portion 16 of the end face 13,
It continues to the side surface 14. The notch window 15 is used to attach or detach the blood collection needle when using the vacuum blood collection holder.
Since the blood collection needle enters and exits through this cutout window 15,
The opening width may be equal to or larger than the outer diameter of the plug-piercing needle tube of the blood collection needle (when the sheath tube is covered on the plug-piercing needle tube, it may be equal to or larger than the outer diameter of the sheath tube). The length of the cutout window 15 on the side surface 14 of the holder body 1 may be longer than the length of the plug-piercing needle tube of the blood collection needle. It is sufficient that the length be equal to or longer than the length of the needle tube on the plug piercing side including the sheath tube). The cutout direction of the cutout window 15 is not particularly limited. Also, the cutout window 1 of the end face 13
Mounting holes 17 for mounting and fixing the guide frame are formed on the left and right sides of 5.

FIGS. 4 to 7 show the guide frame 2.
4 is a plan view thereof, FIG. 5 is a front view thereof viewed from an arrow (a) direction in FIG. 2, FIG. 6 is a view view thereof from an arrow (b) direction of FIG. 2, and FIG. 7 is a side view thereof. Guide frame 2
As shown in FIG. 4, a box having a height lower than the width and having a shape in which only two side surfaces of a hollow square pillar are opposed to each other and chipped away from one of the chipped sides of the side surface as shown in FIG. It has a U-shaped cut-out structure. The guide frame 2 includes a top plate 21, a bottom plate 22, and left and right side walls 23, 23. When viewed from the front, the end surface 241 of the opening 24 of the guide frame 2 has a U-shaped cross section. The side wall 23 of the guide frame 2 is provided with steps 232, 233 and 234 on its inner wall surface 231, and the thickness of the side wall 23 is gradually increased from the entrance side of the guide frame 2 toward the back side. Inner wall 231
In addition, by providing such a step, it is advantageous since the tightening and fixing force of the blood collection needle can be strengthened stepwise, but it is not always necessary to provide this step. The bottom plate 22 of the guide frame 2 has two mounting claws 25 for mounting the guide frame 2 in the mounting holes 17 of the holder body 1.
Ke is provided.

8 to 10 are views showing the core 3, FIG. 8 is a plan view thereof, FIG. 9 is a right side view thereof, and FIG. 10 is a front view thereof. The core 3 has a tweezers structure, and arms 32 and 33 are attached to a base 31 serving as a fulcrum of the tweezers structure. The arms 32 and 33 are connected to movable arms attaching parts 321 and 331, respectively. Thus, movable blades 34 and 35 are provided, respectively, and the movable blades 34 and 35 form a movable end 36. The movable wing 34 is the overlapping portion 3
The movable wing 35 is composed of a portion 351 to be overlapped, a grip 352 and a guide frame contact 353 attached thereto, and the movable blade 35 includes a grip 342 and a guide frame contact 353 attached thereto. I have. Further, the movable wings 34 and 35 have stoppers 344 and 3 respectively.
54 are provided. In addition, the overlap scheduled portions 341 and the overlap scheduled portions 351 are provided with needle base fixing protrusions 345 and 355, respectively, as necessary. Further, the dimension of the core 3 in the thickness direction is preferably set to be equal to or less than the length of the reduced diameter portion 41b of the needle base 41 of the blood collection needle 4 (see FIG. 1) to be fixed in the needle axis direction.

FIG. 11 is a view showing the portion to be overlapped 341 and the vicinity of the portion to be overlapped 351 in the sectional view taken along the line XI-XI in FIG. Scheduled overlapping portion 341 and scheduled overlapping portion 351
Has such a structure, when the movable end 36 is closed in the direction of the arrow in FIG.
41 and the overlapping portion 351 are designed to completely overlap each other.

Such a core 3 is built in the guide frame 2 and is slidable back and forth in the guide frame 2, and the movable end 36 is opened and closed right and left by the back and forth slide to collect blood. It has the function of holding the needle base of the needle in place and releasing it. At the time of fixing the needle base of the blood collection needle by the core 3, the core 3 is pushed into the back of the guide frame 2 as described later, and is gripped with the tip of the grip portion 342 of the movable end portion 36. It is configured such that the blood collection needle can be fixed in a state where the tip of the portion 352 is in contact with the needle base of the blood collection needle and is held (when the blood collection needle is fixed, the tip of the grip portion 342 and the grip portion 352 are fixed). The contact of the tip is not an essential requirement, and does not need to be made as long as the blood collection needle can be tightened and fixed.)

FIG. 12 shows the core 3 incorporated in the guide frame 2.
FIG. 7 is a schematic diagram for explaining a mechanism for fixing and detaching the blood collection needle by sliding movement before and after the blood collection needle. FIG.
(C) is a state in which the top plate 21 of the guide frame 2 is removed,
FIG. 2 is a plan view showing a state of a guide frame 2 attached to a holder body 1 and a core 3 incorporated therein, and the core 3 includes a left half (in other words, including one arm 32 and a movable wing 34). Only the top view of the right half (in other words,
The plan view of the portion including one arm portion 33 and the movable wing 35) is omitted from the plan view of the left half with respect to the center line shown in each figure, since the plan view is symmetrical.

First, the mechanism for fixing the blood collection needle will be described. FIG. 12A is a view showing a state in which the movable wings 34 of the core 3 are open, and the needle base 41 of the blood collection needle is just overlapping with the portion 3 to be overlapped.
41 is shown as contacted. When the needle base 41 is pushed into the inside of the guide frame 2 in this state, FIG.
As shown in (b), the guide frame contact portion 34 of the movable wing 34
3 is slid while contacting the inner wall surface 231 of the guide frame 2, and the movable wings 34 are closed. Guide frame contact part 34
When 3 hits the step 232 on the inner wall surface and is pushed further inside, the movable wing 34 is further closed. Then, the guide frame contact portion 343 is further pushed in, and FIG.
As shown in (c), when the stopper 344 of the movable wing reaches the step 234 of the guide frame, the movement of the core 3 stops. In this state, the movable wing 34 is completely closed, and the movable wing 3
The fourth grip portion 342 is connected to the other grip portion 35 (not shown).
2, the needle base 41 of the blood collection needle is fixed to the movable end. In this state, the overlapping portion 341 completely overlaps the other overlapping portion 351 (not shown). Note that, in this embodiment, the case where the grip portion 342 contacts the other grip portion 352 to fix the needle base 41 of the blood collection needle, but as described above, this contact is not necessarily required. is not.

At this time, in the case where the blood collection needle is the blood collection needle 4 having the needle base 41 in which the male thread is not cut, the grip portion 3
The blood collection needles 42 and 352 are firmly fixed without slipping off in the axial direction of the blood collection needle because they fit into the reduced diameter portion 41b of the needle base 41, but the blood collection needle 5 shown in FIG. When fixing the needle base 51 having such an external thread, the guide frame contact portion 343 is sufficiently pushed into the inside, and the grip portions 342 and 352 are connected to the male screw portion 5.
Even if the first threaded portion 1b is held in place, the male screw portion 51b has only one flange 51a at one end and has no flange at the other end, so that there is no scratching, and it is impossible to prevent the blood sampling needle 5 from slipping through in the axial direction. Therefore, in this case, the overlapping scheduled portion 34
The needle-base fixing protrusions 345 and 355 are provided on the overlapping portion 351 and the overlapping portion 351 respectively.
When the overlapping portion 351 overlaps, the projection 345
And 355 preferably enter the root of the screw.

Next, the mechanism for detaching the blood collection needle will be described. When the blood collection needle is detached, the blood collection needle is ejected by pushing out the base 31 of the core in the direction of the guide frame 2 and passing through a path opposite to the mechanism for fixing the blood collection needle.

To manufacture the holder for vacuum blood collection of the present invention, the constituent materials of the holder body 1, the guide frame 2, and the core 3 are not particularly limited, and a thermoplastic resin, a thermosetting resin, a metal, or the like is appropriately used. Can be As a molding method, conventionally known methods such as injection, extrusion, and cutting are appropriately used. However, injection molding using a thermoplastic resin is preferably used because of ease of production. In order to assemble the holder of the present invention from the holder body 1, the guide frame 2, and the core 3 manufactured as described above, for example, the movable end 3 of the core 3 is used.
6 is closed, and is pushed into the guide frame 2 from the rear opening of the guide frame 2 to assemble the guide frame 2 containing the core 3. Next, by inserting the mounting claws 25 of the guide frame 2 into the mounting holes 17 of the holder main body 1, the guide frame 2 is placed on the holder main body 1 and the holder of the present invention is obtained.

Next, a procedure for collecting blood using the holder of the present invention will be described. In order to fix the blood collection needle, as shown in FIG. 13, while holding the central axis of the blood collection needle 4 or 5 in parallel with the central axis of the holder main body 1, the cutout window 15 provided on the side wall of the holder main body 1 is held. , Blood sampling needle 4 or 5 is introduced into holder main body 1 sideways from the side of holder main body 1. At this time, when the reduced diameter portion 41b of the needle base 41 of the blood collection needle 4 or 5 or the male screw portion 51b of the needle base 51 is applied to the movable end portion 36 of the core 3 and pressed to the vicinity of the center axis of the holder body 1, The movable end 36 of the core 3 slides back while contacting the inner wall surface of the guide frame 2, and the blood collection needle 4 or 5 can be held and fixed to tighten the reduced diameter portion 41b or the male screw portion 51b. In order to collect blood using the holder of the present invention to which the blood collection needle is fixed as described above, a conventionally known procedure may be used.

When the blood collection needle 4 or 5 is to be detached after the blood collection is completed, the base 31 of the core 3 is pushed out toward the guide frame 2 so that the blood collection needle 4 or 5 passes through a path opposite to the fixed state. Since the blood sampling needle is discharged, the discharged blood collection needle may be received in an empty metal can or the like.

FIG. 14 is a perspective view showing another example of the vacuum blood collection holder of the present invention. This vacuum blood collection holder is different from the vacuum blood collection holder of FIG. 2 in that a guide frame 20 having a roof structure 26 added to the guide frame 2 of FIG. 2 is used as a guide frame. The same is true. Therefore, the same parts as those of the embodiment of FIG. 2 are denoted by the same reference numerals, and the description thereof will be omitted.

15 to 17 are views for explaining the guide frame 20, FIG. 15 is a front view thereof, FIG. 16 is a side view thereof, and FIG. 17 is a plan view thereof. The guide frame 20 has a shape in which a roof structure 26 having a convex cross-section with a broken bottom is provided from the vicinity of the central portion of the top plate 21 to the rear thereof on the top plate 21 of the guide frame of the embodiment of FIG. I have. A notch 27a for receiving a portion of the blood collection needle on the side of the blood vessel piercing portion is provided in the center of the front surface of the top plate 27 of the roof structure 26. The height range of the roof structure 26 is such that when the blood collection needle is mounted on the holder of the present invention, the portion of the needle base of the blood collection needle is the roof structure 26.
The height is not less than the height that can be stored inside, and the needle tube on the blood vessel puncturing portion side of the blood collection needle is within the height corresponding to the top plate 27 of the roof structure 26.

The method of manufacturing the guide frame 20 may be the same as the method described in the previous embodiment.

A method of using the holder of the present invention using the guide frame 20 will be described. In the manner described above, the guide frame 20
After assembling the holder by incorporating the core 3 into the holder main body 1 and assembling the holder in the same manner as in the previous embodiment, the needle base 41 of the blood collection needle 4 (or 5) is attached to the holder main body 1 as shown in FIG. Diameter reduced portion 41b (or male screw portion 51 of needle base 51)
When b) is fixed, the needle base 41 of the blood collection needle 4 is drawn into the roof structure 26 as shown in FIG. A force is applied in the direction of the arrow to bend the notch 27a of the top plate 27 of FIG. The bend angle of the blood vessel piercing side needle tube 42 is determined by the retraction distance of the core and the height of the roof structure, and the inner angle formed by the blood vessel piercing side needle tube 42 and the plug piercing side needle tube 43 is 10 to 170 degrees. It is preferable to set as follows.

In order to collect blood using the holder of the present invention in which the blood collection needle is bent and fixed as described above, the blood vessel piercing side needle tube 42 of the blood collection needle 4 is moved along the blood vessel 6 as shown in FIG. The holder body 1 is held in a hand in an upright state in order to pierce the holder in the upright direction. By taking such a blood-collecting posture, the blood vessel piercing angle (the angle formed between the blood vessel 6 and the blood-collecting needle 4) can be made extremely small regardless of the size of the outer diameter of the holder main body 1. In addition, when the vacuum blood collection tube 7 is inserted into the holder main body 1 after the blood vessel penetration, the insertion direction is inevitably different from the blood vessel penetration direction. With the momentum when penetrating the body, the needle tip is released from the tension to prevent it from being pushed further into the blood vessel. Furthermore, since the vacuum blood collection tube 7 during blood collection is almost in an inverted state, it is very easy to determine whether the inflow of blood is still continuing or has already been finished from the rise in the liquid level.

When the blood collection needle 4 is removed after the blood collection is completed, it may be performed in the same manner as in the previous embodiment.

The holder for vacuum blood collection according to the present invention is a vacuum blood collection tube having a sheet-shaped plug other than the vacuum blood collection tube having a typical plug structure as shown in FIGS. Can be applied without any problem.

[0033]

The structure of the vacuum blood collection holder of the present invention is as described above. When the blood collection needle is removed from the holder after the blood collection, there is no need to move the finger to the needle tip, and the needle stick accident is greatly reduced. And does not require a dedicated device for needle removal. Furthermore, in the case of a vacuum blood collection holder having a roof structure as a guide frame, in addition to the above effects, the blood collection needle can be fixed and the needle tube on the blood vessel piercing side of the blood collection needle can be bent simultaneously. In this condition, the blood sampling needle can be easily and easily inserted into the blood vessel at a low angle, which significantly reduces the psychological tension not only of the blood sampler but also of the blood sampler, and reduces blood sampling accidents such as internal bleeding. At least, it is expected that the spread of vacuum blood collection itself will be further spurred.

The configuration of the method for fixing and releasing the blood collection needle of the present invention is as described above. According to the method for fixing and releasing the blood collection needle of the present invention, when removing the blood collection needle from the holder after the blood collection is completed, bring the finger close to the needle tip. No operation is required, the needle stick accident can be greatly reduced, and a special device for removing the needle is not required.

[Brief description of the drawings]

FIG. 1 shows a blood collection needle, and FIG.
Is a one-touch type blood collection needle.
This is a type of blood collection needle with an external thread.

FIG. 2 is a perspective view showing an example of the vacuum blood collection holder of the present invention.

FIG. 3 is a perspective view showing a holder main body.

FIG. 4 is a plan view of a guide frame.

FIG. 5 is a front view of the guide frame as viewed from a direction of an arrow (a) in FIG. 2;

FIG. 6 is a view of a guide frame as viewed from an arrow (b) direction in FIG. 2;

FIG. 7 is a side view of the guide frame.

FIG. 8 is a plan view of a core.

FIG. 9 is a right side view of the core.

FIG. 10 is a front view of a core.

FIG. 11 is a diagram showing a portion to be overlapped 341 and the vicinity of the portion to be overlapped 351 in the sectional view taken along line XI-XI of FIG. 8;

FIG. 12 is a schematic plan view for explaining a mechanism for fixing and detaching the blood collection needle by sliding the core incorporated in the guide frame back and forth, and FIG. FIG. 12B is a view showing a state in which the movable wings 34 of the core 3 are open, FIG.
FIG. 12C shows a state in which the guide frame contact portion 343 of the movable wing 34 is slid and moved. FIG. 12C shows that the stopper 344 of the movable wing reaches the step 234 of the guide frame and the core 3 stops moving. FIG. 9 is a diagram showing a state where a needle base 41 of the blood collection needle is fixed to a movable end.

FIG. 13 is an explanatory diagram for explaining a state of fixing a blood collection needle using the holder of the present invention.

FIG. 14 is a perspective view showing another example of the vacuum blood collection holder of the present invention.

15 is a front view of the guide frame 20. FIG.

FIG. 16 is a side view of the guide frame 20.

17 is a plan view of the guide frame 20. FIG.

FIG. 18 is an explanatory diagram illustrating a state in which the blood vessel piercing side needle tube of the blood collection needle is bent in the direction of the arrow.

FIG. 19 is an explanatory view showing a state in which blood is collected using a vacuum blood collection holder according to another example of the present invention.

FIG. 20 is a sectional view showing a vacuum blood collection tube.

FIG. 21 is a side view showing a vacuum blood collection needle.

FIG. 22 is a sectional view showing a conventional vacuum blood collection holder.

FIG. 23 is an explanatory view showing how blood is collected using a conventional vacuum blood collection holder.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Holder main body 2, 20 Guide frame 3 Core 4, 5 Blood collection needle 6 Blood vessel 7 Vacuum blood collection tube 11 Opening 13 End surface 14 Side surface 15 Notch window 17 Mounting hole 25 Mounting claw 26 Roof structure 27 Top plate 27a Cut 31 Base 32 , 33 Arm part 34, 35 Movable wing 36 Movable end part 41, 51 Needle base 41b Reduced diameter part 42 Blood vessel piercing side needle tube 51b Male screw part 231 Inner wall surface 341, 351 Planned overlapping part 342, 352 Gripping part 343, 353 Guide Frame contact part 344, 354 Stopper

Claims (2)

[Claims] 1. A cylindrical vacuum blood collection holder having an opening for inserting a blood collection tube at one end and a blood collection needle fixing mechanism at the other end, wherein the blood collection needle is fixed to the holder main body. A notch window is provided on the end face on the side and the side face following the end face, and a guide frame containing a core slidable back and forth in a plane perpendicular to the center axis of the holder is mounted on the end face. The core has a tweezer structure, and the core slides back and forth while contacting the inner wall surface of the guide frame,
A vacuum blood collection holder having a structure in which its movable end is opened and closed to the left and right to hold and fix or remove the needle base of the blood collection needle. 2. A blood collection needle fixed to the vacuum blood collection holder according to claim 1, wherein the blood collection needle is passed through the cutout window while holding the blood collection needle parallel to the central axis of the holder body. By moving the core in parallel to the vicinity of the center axis of the holder, the movable end of the core is moved backward while sliding in contact with the inner wall surface of the guide frame, and the needle base of the blood collection needle is held and fixed to the movable end, A method for fixing and removing a blood collection needle, wherein the blood collection needle is removed in the reverse order.