WO1999027856A1

WO1999027856A1 - Vacuum blood-collecting holder

Info

Publication number: WO1999027856A1
Application number: PCT/JP1998/005442
Authority: WO
Inventors: Ryuji Suzuki
Original assignee: Ryuji Suzuki
Priority date: 1997-12-02
Filing date: 1998-12-02
Publication date: 1999-06-10
Also published as: JPH11155839A

Abstract

An improved vacuum blood-collecting holder having a simple construction and capable of being produced economically and supporting stably and safely a blood-collecting needle in a fitted position even when any excessive force is applied thereto, comprising a pair of needle fitting support members each disposed at one of the end portions of a holder main body and equipped with a female screw provided to an inner surface thereof having a substantially semi-circular section, and mating with a male screw disposed on a hub of the blood-collecting needle, wherein the needle fitting support members are so constituted as to be capable of hooking with each other and a fitting/removing operation of the blood-collecting needle can be made by sliding one of the needle fitting support members in a transverse direction relative to the other.

Description

Specification

Vacuum blood holder

Technical field

The present invention relates to a vacuum blood collection holder used at the time of inserting a vacuum blood collection tube from the open end of the other end to collect blood, provided with a needle mounting support for mounting and supporting a blood collection needle at one end.

Background art

Conventionally, various types of vacuum blood collection holders of this type have been proposed, and in general, one end is inserted into a blood vessel of a blood collection subject, and the other end is connected to a vacuum blood collection blood vessel. It is known that a needle mounting support portion formed to be engaged with a male screw provided on an outer periphery of a hub mounted on an intermediate portion of a blood collection needle is formed integrally with a holder at a front end of the holder. (See the back of Japanese Patent Publication No. 7-32766).

In such a vacuum blood collection method, the blood collection needle to be used is engaged with a needle mounting support provided at the tip of the vacuum blood collection holder at the time of use, and after the blood collection operation, the blood collection needle is rotated and removed from the holder. Discard, while the vacuum blood collection holder is ready for the next blood collection. In this way, the blood collection needle is used and discarded each time from the viewpoint of preventing infection and ensuring safety, but the holder is used many times.

In such a screw-engaged vacuum blood collection holder, the blood collection needle is not used when the blood collection needle is attached, so there is no particular problem if the operator directly touches it.However, when removing the blood collection needle from the holder after blood collection Not only may touch the blood collection needle with blood attached, but also need to rotate the blood collection needle to disengage the screw from the holder, which requires time and effort. In addition, since a blood collection needle used for vacuum blood collection is usually equipped with a cap, the blood collection needle must be attached to and detached from the holder with the cap attached, which is extremely difficult in terms of stability when attached. Although it is excellent, it has a problem that it does not separate or is difficult to remove unless it is ripened after blood collection, and it takes time to attach and detach.

In order to solve this problem, the present inventor has previously disclosed in Japanese Patent Application Laid-Open No. 9-84780, at one end of a vacuum blood collection holder, an inner peripheral surface having a substantially semicircular cross section, respectively. A pair of needle mounting support members having a female screw thread engaged with a male screw provided on the hub of the blood collection needle is provided. Proposed a vacuum blood collection holder configured to be able to slide at least one of the needle mounting support members in the horizontal direction. With this proposal, a blood collection needle attached in a screw-in manner could be easily removed, and stable attachment and detachment without touching the blood collection needle became possible.

In the previously proposed vacuum blood sampling holder, a pair of needle mounting support members and a stopper member are required, and in operation, it is necessary to operate at least one of the pair of needle mounting support members and both the stopper member. . For this reason, the number of parts as a vacuum blood collection holder is large, and the operation is a two-stage operation, and further improvement in both cost and operability of the vacuum blood collection holder is required.

In addition to this complicated structure, the structure is not always sufficient for the overload (overtorque) when mounting the blood collection needle, and when an excessive force is applied, the pair of needle mounting support members is There is a risk that the blood collection needles may not be securely held because they are pushed apart from each other.

Disclosure of the invention

SUMMARY OF THE INVENTION It is an object of the present invention to provide an improved vacuum blood sampling holder that has a simple structure, can be manufactured at low cost, and can stably and safely mount and support a blood sampling needle even when an excessive force is applied.

To achieve the above object, according to the present invention, a holder is provided at one end of a main body. And a pair of needle mounting support members each having a female screw engaged with a male screw provided on the haptic of the blood collection needle on the inner peripheral surface having a substantially semicircular cross section. At the same time, it is possible to perform a series of attachment / detachment operations of the blood collection needle only by sliding one needle mounting support member laterally with respect to the other needle mounting support member. According to the embodiment of the present invention, a needle mounting support portion for mounting and supporting a blood collection needle is provided at one end, and a vacuum blood collection tube can be inserted from the open end of the other end. A pair of needle mounting support members having a female screw engaging with a male screw provided on the hub of the blood collection needle on a circular inner peripheral surface, and one of the pair of needle mounting support members matched each other. A vacuum blood collection holder configured to be able to slide laterally between the mating position and the separated separation position, and to mount and support the blood collection needle with the pair of needle mounting support members aligned with each other. In one aspect, one of a pair of needle mounting support members is fixed to an end surface of one end of a holder main body, and a support recess is provided to support the other needle mounting support member in a laterally slidable manner, and is slid in a lateral direction. The other possible needle mounting support member has a plate shape, One end of this elastically bendable portion is provided with a hook portion for hooking on one needle mounting support member, and the other end of the other needle mounting support member is provided with the other needle mounting portion. It is characterized in that the supporting member is provided with a stepped portion that comes into contact with a part of the stopper that prevents the supporting member from coming off the one-side needle mounting supporting member.

In a preferred embodiment of the present invention, one of the needle mounting support members fixed to the end face of one end of the holder one body can be formed integrally with the holder body.

According to a preferred embodiment of the present invention, a part of a stopper for preventing the other needle mounting support member from coming off from the other needle mounting support member can be integrally formed with the holder one body.

Furthermore, the elastically bendable edge of the opening through which the blood collection needle of the other needle mounting support member passes is formed when the pair of needle mounting support members is separated. It may be configured to release the engagement between the male screw provided on the hub of the blood needle and the female screw of one of the needle mounting support members. This prevents the male screw provided on the hub of the blood collection needle to be released from remaining engaged with the female screw of one of the needle mounting support members when the blood collection needle is removed from the holder. The blood collection needle can be easily and reliably removed from the holder.

In the vacuum blood sampling holder according to the present invention thus configured, a pair of needle mounting supports each having a female screw engaged with a male screw provided on the hub of the blood sampling needle on the inner peripheral surface having a substantially semicircular cross section. The screw-in type blood collection needle can be easily removed by sliding the at least one needle mounting support member laterally with one hand between the mating position where the members match each other and the separated separation position. In addition, the needle mounting support members can be securely hooked together, and the blood collection needle can be reliably held even when a large external force is applied.

BRIEF DESCRIPTION OF THE FIGURES

FIG. 1 is a schematic perspective view showing a main part of one embodiment of the present invention.

FIG. 2 is a schematic perspective view showing parts constituting a part of the holder of FIG. FIG. 3 is a schematic perspective view showing a state in which a blood collection needle can be attached to the holder of FIG. 1 in combination with the components of FIG.

FIG. 4 is a schematic perspective view showing a state in which the blood collection needle can be opened by combining the components of FIG. 2 with the holder of FIG.

FIG. 5 is a schematic exploded sectional view of a main part of the holder of the present invention.

FIG. 6 is a schematic sectional view showing an assembled state of a main part of the holder 1 of the present invention. FIG. 7 is a schematic sectional view showing a state where a blood collection needle is mounted on the holder 1 of the present invention.

FIG. 8 is a schematic sectional view showing an operation state of a main part of the holder of the present invention. FIG. 9 is a schematic cross-sectional view showing another operation state of a main part of the holder of the present invention. So.

FIG. 10 is a schematic sectional view showing a state in which the blood collection needle is released to the holder 1 of the present invention.

FIG. 11 is a schematic sectional view showing another state in which the blood collection needle is released to the holder of the present invention.

FIG. 12 is a schematic sectional view showing a state in which the blood collection needle is released from the holder of the present invention.

BEST MODE FOR CARRYING OUT THE INVENTION

Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings.

In the embodiment shown in FIGS. 1 to 4, reference numeral 1 denotes a holder made of a suitable synthetic resin material, and at one end, that is, at an end thereof, an opening 2 for passing a blood collection needle (not shown) is defined. End wall 3 is provided. On the outer surface of the end wall 3, a pair of needle mounting support members 4 forming a needle mounting support portion made of a suitable synthetic resin material are formed physically. A protrusion 3 a is provided along the edge of the end wall 3 at a position facing the one needle mounting support member 4 to form a stopper. The needle mounting support member 4 has a blood sampling needle screwing portion 4a having a substantially semicircular cross section, and is formed on the inner peripheral surface of the blood sampling needle screwing portion 4a and provided on the hub of the blood sampling needle N. A female screw 4b that engages with the male screw, and a concave engaging portion 4c that supports the other needle mounting support member 5 so as to be slidable in the lateral direction. As shown in FIG. 2, the other needle mounting support member 5 has a plate-like shape, and has a substantially semicircular cross section for screwing the blood sampling needle 5a and an inner peripheral surface of the screwing portion 5a for the blood sampling needle. And a female screw 5b that engages with a male screw provided on the haptic of the blood collection needle N, a central opening 5c, and a hook that contacts the outer edge 4d of one of the needle mounting support members 5. 5 d and a step 5 e abutting on the projection 3 a on the end wall 3. In a state where the pair of needle mounting support members 4 and 5 are aligned with each other, the pair of needle mounting support members 4 and 5 are shown in FIG. As described above, the blood collecting needles can be mounted and supported at the matching positions that match each other. The step 5e cooperates with the projection 3a on the end wall 3 to prevent the other needle mounting support member 5 from coming off the negative needle mounting support member 4. The other needle mounting support member 5 is slidably supported in the lateral direction through the concave engaging portion 4c of the one needle mounting support member 4, and one end of the other needle mounting support member 5 The portion provided with the stop portion 5d is configured to be elastically bendable. Further, the edge 5f of the central opening 5 of the other needle mounting support member 5 on the side of the hook 5d pushes the blood collection needle N to be released laterally when the pair of needle mounting support members is separated. The male screw provided on the hub of the blood collection needle N is disengaged from the female screw 4 b of the one needle mounting support member 4.

In assembling the vacuum blood collection holder, as shown in FIGS. 5 and 6, the other needle mounting support member 5 is passed through the concave engagement portion 4c of one needle mounting support member 4, and the one needle mounting support member 4 By contacting the hook 5d of the other needle mounting support member 5 with the outer edge 4d, the pair of needle mounting support members 4 and 5 are held at the matching positions as shown in FIG. .

In the operation of the illustrated apparatus configured as described above, the other needle mounting support member 5 is slid toward one needle mounting support member 4 so as to match each other. In this state, the blood sampling needle is attached as shown in FIG. After the blood collection operation is completed, one end of the other needle mounting support member 5 is pushed downward as shown by an arrow 6 as shown in FIGS. The other needle mounting support member 5 is detached from the other needle mounting support member 4 by removing the hook 5d of the other needle mounting support member 5 and pushing in the horizontal direction in the order of arrows 7 and 8. The blood collection needle N is disengaged from the screw and falls down.

. In this case, the edge 5 の of the central opening 5 c of the other needle mounting support member 5 contacts the blood collection needle 採 to be released and displaces the blood collection needle Ν in the lateral direction. When detaching from the holder, the male screw provided on the haptic of the blood collection needle to be released does not remain engaged with the female screw of one of the needle mounting support members, and can be easily and reliably dropped. it can.

Industrial applicability

As described above, the vacuum blood sampling holder according to the present invention is provided with a female screw which engages with a male screw provided on the hap of the blood sampling needle on the inner peripheral surface of each of which has a substantially semicircular cross section. A pair of needle mounting support members are slidably combined with each other, so the number of components can be reduced, and one needle mounting support member can be slid laterally with one hand to form a screw-in type. Since the attached blood collection needle can be easily removed, the operability is good, and the needle mounting support members are configured to be securely hooked, so that the blood collection needle is securely held even when a large external force is applied. become able to. Therefore, the present invention can provide an inexpensive vacuum blood sampling holder which has good operability and can be used safely.

Claims

The scope of the claims

1. Equipped with a needle mounting support for mounting and supporting a blood collection needle at one end, a vacuum blood collection tube can be inserted from the open end of the other end. A pair of needle mounting support members provided with a female screw engaged with a male screw provided on the haptic, and one of the pair of needle mounting support members is separated from a matching position where they are matched with each other and from a separated position. A vacuum blood collection holder configured to be able to slide laterally between the blood collection needles so that the blood collection needle is mounted and supported in a state where the pair of needle mounting support members match each other.

One side of the pair of needle mounting support members is fixedly provided at one end surface of the holder and the main body, and has a support recess which slidably supports the other needle mounting support member in the horizontal direction, and slides in the horizontal direction. The other possible needle mounting support member has a plate-like shape provided with an opening through which the blood collection needle passes, and one end thereof is elastically bendable. The other end of the other needle mounting support member is provided with a step which abuts a part of the stopper which prevents the other needle mounting support member from being disengaged from the other needle mounting support member. A vacuum blood sampling holder characterized in that it has a part.

2. The vacuum blood collection holder according to claim 1, wherein one of the needle mounting support members is fixed to an end surface of one end of the holder and the main body, and the one needle mounting support member is formed integrally with the holder.

3. The vacuum blood collection holder according to claim 1, wherein a part of the stopper for preventing the other needle mounting support member from being detached from the other needle mounting support member is integrally formed with the holder main body. one.

4. The male thread provided on the hub of the blood collection needle to be released when the pair of needle mounting support members is separated, at the elastically bendable end of the opening through which the blood collection needle of the other needle mounting support member passes. Release the engagement between the female thread and the female screw of one of the needle mounting support members. The vacuum blood collection holder according to claim 1, wherein the holder is configured as follows.