Disposable arterial blood gas collection device capable of preventing acupuncture injury

Abstract

The utility model discloses a disposable arterial blood gas collection needle capable of preventing acupuncture injury, which comprises a needle cylinder, the front end of the needle cylinder is connected with a needle head, the front end of the needle cylinder is provided with a protective cover, the protective cover is sleeved outside the needle head, and the protective cover is provided with a needle head plugging piece. Compared with the prior art, the protective cover has the advantages that the protective cover is provided with the needle head blocking piece, after blood sampling is completed, the protective cover covers the front end of the needle cylinder again, the needle head penetrates into the blocking piece, sealing is completed, and collected blood is prevented from making contact with air.

Description

TECHNICAL FIELD

[0001] The utility model belongs to medical apparatus and specifically relates to a disposable arterial blood gas collection device capable of preventing needle stick injury. BACKGROUND

[0002] The best sample for blood gas analysis is arterial blood, which can truly reflect the oxidation metabolism and acid-base balance state in the body, and the common taking sites are brachial artery, femoral artery and forearm artery etc. Arterial blood can make PO2 increase and PCO2 decrease after contacting with air, and pollute the blood sample. In order to prevent the collected arterial blood from contacting with air, the disposable arterial blood gas collection needle currently used in clinical practice needs a blocking piece prepared by medical staff after collecting arterial blood. After blood collection is completed, one hand holds the needle cylinder and the other hand holds the blocking piece, and the needle is inserted into the blocking piece. Since the blocking piece is small in size, it is easy to be pricked or pierced to cause needle stick injury. According to the statistics of the hospital infection department, needle stick injury caused by blood gas collection occurs every year. SUMMARY

[0003] In view of the above problems, the utility model discloses a disposable arterial blood gas collection device capable of preventing needle stick injury, which comprises a needle cylinder, the front end of the needle cylinder is connected with a needle, the front end of the needle cylinder is provided with a protective cover, the protective cover is sleeved outside the needle, and the protective cover is provided with a needle blocking piece.

[0004] Compared with the prior art, the utility model has the beneficial effects that the protective cover is provided with the needle blocking piece, the protective cover is covered on the front end of the needle cylinder after blood collection is completed, the needle is inserted into the blocking piece to complete sealing, and the collected blood is prevented from contacting with air.

[0005] The needle blocking piece is a first blocking piece, and the first blocking piece comprises a first flexible blocking piece which can be put into the protective cover.

[0006] The beneficial effects of the above further preferred scheme are that the blocking piece can be placed in the needle cylinder packaging bag, the needle blocking piece is put into the protective cover after blood collection is completed, the needle is inserted into the protective cover to complete sealing, which is convenient and fast, and the sharpness of the needle can be maintained before blood collection.

[0007] Preferably, the needle blocking piece is a second blocking piece, the second blocking piece comprises a second flexible blocking piece which is partially located outside the protective cover, one end of the protective cover away from the needle cylinder is arranged at an opening matched with the second flexible blocking piece, and the second flexible blocking piece can be moved to a blocking position by pressing.

[0008] The beneficial effects of the above further preferred scheme are that the second flexible blocking piece can be moved to a blocking position by pressing after blood collection is completed, the needle is inserted into the protective cover to complete sealing, which is more convenient and fast compared with the first blocking piece, the sharpness of the needle can be maintained before blood collection, and the blocking piece can also be prevented from being lost.

[0009] Preferably, the surface of the first flexible blocking member is provided with an adhesive or glue, and preferably the shape of the first flexible blocking member is adapted to the front end of the protective cover.

[0010] The above further preferred arrangement has the advantage that placing the needle blocking member into the protective cover can relatively fix the needle blocking member, avoiding the needle blocking member being taken out of the protective cover when the needle is pulled out again.

[0011] Preferably, the second blocking member further comprises a base connected with the second flexible blocking member, and pressing the base can move the second blocking member to the blocking position.

[0012] The above further preferred arrangement has the advantage that pressing the base is more convenient, and can also prevent other sharp objects from damaging the second flexible blocking member or other needles from being contaminated by entering the second flexible blocking member.

[0013] Preferably, the base is a circular truncated cone with a small top and a large bottom, and the opening of the protective cover is provided with a wedge-shaped seat matched with the base. Preferably, the base is made of hard material.

[0014] The above further preferred arrangement has the advantage that pressing the base into the protective cover can seal the second flexible blocking member into the protective cover, avoiding the needle from pushing out the second flexible blocking member when the needle pierces the second flexible blocking member.

[0015] Preferably, the second flexible blocking member or the base is connected with the protective cover through a disposable connecting member, which can be a thin plastic member or a connecting rope. When pressed, the disposable connecting member is disconnected, so that the second blocking member enters the protective cover.

[0016] The above further preferred arrangement has the advantage that it can avoid the needle blocking member being lost, and also avoid the needle blocking member being damaged by the sharpness of the needle during transportation or by the mistake of medical staff, and the second flexible blocking member is pushed into the protective cover before blood sampling.

[0017] Preferably, the protective cover is provided with a second limiting seat matched with the second blocking member, and the needle can pass over the second limiting seat when the needle enters the protective cover. Preferably, the second blocking member is located between the second limiting seat and the wedge-shaped seat when the second blocking member moves to the blocking position.

[0018] The above further preferred arrangement has the advantage that placing the needle blocking member into the protective cover can relatively fix the needle blocking member, avoiding the needle blocking member being taken out of the protective cover when the needle is pulled out again.

[0019] Preferably, the second flexible blocking member is a circular truncated cone with a small top and a large bottom, and the bottom of the second flexible blocking member is connected with the base.

[0020] The above further preferred scheme has the advantage that the protective cover can be quickly entered when pressed.

[0021] Preferably, the sidewall of the second flexible blocking member is provided with a protective shell. Preferably, the protective shell is connected with the base.

[0022] The above further preferred scheme has the advantage that the protective cover can be quickly entered when pressed.

[0023] Preferably, the needle plug of the needle cylinder is provided with a storage groove for placing the protective cover; or

[0024] The needle cylinder is connected with the protective cover through a disposable connecting rope.

[0025] The above further preferred scheme has the advantage that after blood sampling, the protective cover can be quickly taken out, and then the needle is inserted to complete the sealing, which is quick and convenient, safe to use, and can seal the needle in the shortest time, thereby effectively isolating air and improving the accuracy of inspection.

[0026] Preferably, the first flexible blocking member is located at the front end of the protective cover, the protective cover is provided with a first limiting seat matched with the first flexible blocking member, the front end of the protective cover is sealed, and the first flexible blocking member can move between the front end of the protective cover and the first limiting seat.

[0027] The above further preferred scheme has the advantage that before use, the needle is inserted into the first flexible blocking member, during blood sampling, the first limiting seat blocks the first flexible blocking member, and after blood sampling, the needle is inserted into the protective cover again, which is quick and convenient, safe to use, and can seal the needle in the shortest time, thereby effectively isolating air and improving the accuracy of inspection. BRIEF DESCRIPTION OF DRAWINGS

[0028] Figure 1 It is a structural schematic view of the utility model;

[0029] Figure 2 It is a structural schematic view of the protective cover Figure One ;

[0030] Figure 3 It is a structural schematic view of the protective cover Figure Two ;

[0031] Figure 4 It is a structural schematic view of the protective cover Figure Three ;

[0032] Figure 5 It is a structural schematic view of the protective coverFigure Four ;

[0033] Figure 6 For Figure 4 A enlarged view of.

[0034] 1-needle cylinder, 11-needle pin, 2-needle head, 3-protective cover, 4-needle head blocking piece, 410-first blocking piece, 411-first flexible blocking piece, 412-first limiting seat, 420-second blocking piece, 421-second flexible blocking piece, 422-base, 423-wedge-shaped seat, 424-disposable connecting piece, 425-second limiting seat, 426-protection shell. DETAILED DESCRIPTION

[0035] In order to make the purpose, technical scheme and advantages of the utility model clearer, the technical scheme in the utility model embodiment will be clearly and completely described below in combination with the utility model embodiment.

[0036] Embodiment 1

[0037] A disposable arterial blood gas collection device for preventing needle stick injury, comprising a needle cylinder 1, the front end of the needle cylinder 1 is connected with a needle head 2, the front end of the needle cylinder 1 is provided with a protective cover 3, the protective cover 3 is sleeved outside the needle head 2, and the protective cover 3 is provided with a needle head blocking piece 4.

[0038] The needle head blocking piece 4 is a first blocking piece 410, the first blocking piece 410 comprises a first flexible blocking piece 411 which can be put into the protective cover 3, the surface of the first flexible blocking piece 411 is provided with a sticking piece or glue, and the shape of the first flexible blocking piece 411 is adapted to the front end of the protective cover 3 as an optional scheme in the embodiment.

[0039] The first flexible blocking piece 411 is located at the front end of the protective cover 3, the protective cover 3 is provided with a first limiting seat 412 matched with the first flexible blocking piece 411, the front end of the protective cover 3 is sealed, and the first flexible blocking piece 411 can move between the front end of the protective cover 3 and the first limiting seat 412. Before use, the needle head 2 can be inserted into the first flexible blocking piece 411 or the first flexible blocking piece 411 can be sleeved on the needle head 2 (preferably the latter, without damaging the needle head 2), and when the needle head 2 is pulled out, the first limiting seat 412 blocks the first flexible blocking piece 411, so that the blocking piece is prevented from being taken out of the protective cover 3 by the needle head 2.

[0040] The use method of the embodiment is that first blood is collected, then the first flexible blocking piece 411 is put into the protective cover, then the protective cover is covered, the needle head is inserted into the first flexible blocking piece 411 to complete sealing. Alternatively, the needle head is first penetrated through the first flexible blocking piece 411, then the needle head 2 is taken out to collect blood, and due to the cooperation of the first limiting seat 412, the first flexible blocking piece 411 will not come out, and after blood collection, the needle head is put back to complete sealing.

[0041] Embodiment 2

[0042] The difference between this embodiment and embodiment 1 is that the needle blocking member 4 is a second blocking member 420, which comprises a second flexible blocking member 421 partially located outside the protective cover 3 and partially located inside the protective cover 3 but not in contact with the needle 2 when the needle 2 is inserted into the protective cover 3, and the end of the protective cover 3 away from the syringe 1 is provided with an opening matched with the second flexible blocking member, and the second flexible blocking member 421 can be moved to a blocking position by pressing, i.e. when the needle 2 is inserted into the protective cover 3, the needle 2 can be inserted into the second flexible blocking member 421 to complete the sealing. Preferably, the second blocking member 420 is connected with the protective cover 3 through a disposable connecting member 424.

[0043] As an optional solution, the second blocking member 420 further comprises a base 422 connected with the second flexible blocking member 421, the base 422 is a circular truncated cone with a small top and a large bottom, the second flexible blocking member 421 is also a circular truncated cone with a small top and a large bottom, and the bottom of the second flexible blocking member 421 is connected with the base 422. The opening of the protective cover 3 is provided with a wedge-shaped seat 423 matched with the base 422, and preferably the base 422 is made of hard material. A protective shell 426 can also be provided on the sidewall of the second flexible blocking member 421, and the protective shell 426 is connected with the base 422.

[0044] The second blocking member 420 can be moved to the blocking position by pressing the base 422. The protective cover 3 is provided with a second limiting seat 425 matched with the second blocking member 420, and the needle 2 can pass over the second limiting seat 425 when the needle 2 is inserted into the protective cover 3. Preferably, the second blocking member is located between the second limiting seat 425 and the wedge-shaped seat 423 when the second blocking member is moved to the blocking position. The needle plug 11 of the syringe 1 is provided with a storage groove (not shown in the figure) for placing the protective cover 3, or the syringe 1 is connected with the protective cover 3 through a disposable connecting rope.

[0045] Preferably, the second flexible blocking member 421 or the base 422 is connected with the protective cover 3 through a disposable connecting member 424, and the disposable connecting member 424 can be a thin plastic piece or a connecting rope.

[0046] The use method of this embodiment is to first take blood, then press the base 422 to push the second blocking member 420 into the protective cover, cover the protective cover after taking blood, and insert the needle into the first flexible blocking member 411 to complete the sealing.

[0047] The above examples are only used to illustrate the technical solutions of the present application, and are not intended to limit them; based on the embodiments of the present application, all other embodiments obtained by those skilled in the art without creative labor belong to the scope of protection of the present application. Although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that: it can still modify the technical solutions recorded in the foregoing embodiments, or make equivalent replacement to part of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present application.

Claims

1. A disposable arterial blood gas collection device to prevent needlestick injuries, characterized in that, The application relates to a syringe (1) with a needle (2) at the front end of the syringe (1). A protective cover (3) is arranged at the front end of the syringe (1), the protective cover (3) is arranged outside the needle (2), and the protective cover (3) is provided with a needle blocking piece (4). The needle blocking piece is a first blocking piece (410), the first blocking piece (410) comprises a first flexible blocking piece (411) which can be placed in the protective cover, the surface of the first flexible blocking piece (411) is provided with a sticking piece or glue, and the shape of the first flexible blocking piece (411) is adapted to the front end of the protective cover. Or a second blocking piece (420), the second blocking piece (420) comprises a second flexible blocking piece (421) which is partially arranged outside the protective cover, the end of the protective cover (3) away from the syringe is arranged at an opening matched with the second flexible blocking piece (421), the second flexible blocking piece (421) can be moved to a blocking position by pressing, and the second blocking piece (420) further comprises a base (422) connected with the second flexible blocking piece (421), the second blocking piece (420) can be moved to the blocking position by pressing the base (422).

2. The single use, needle stick injury preventing arterial blood gas collection device of claim 1, wherein, The base (422) is a circular truncated cone with a small upper end and a large lower end, and the opening of the protective cover is provided with a wedge-shaped seat (423) matched with the base.

3. The single use, needle stick injury preventing arterial blood gas collection device of claim 2, wherein, The base (422) is made of a hard material.

4. The single use, needle stick injury preventing arterial blood gas collection device of claim 1, wherein, The second flexible blocking piece (421) or the base (422) is connected with the protective cover (3) through a disposable connecting piece (424).

5. The single use, needle stick injury preventing arterial blood gas collection device of claim 1, wherein, The protective cover (3) is provided with a second limiting seat (425) matched with the second blocking piece (420), and the needle (2) can pass through the second limiting seat (425) when the needle (2) is inserted into the protective cover (3).

6. The single use, needle stick injury preventing, arterial blood gas collection device of claim 5, wherein, The second blocking piece (420) is located between the second limiting seat (425) and the wedge-shaped seat (423) when the second blocking piece (420) is moved to the blocking position.

7. The single use, needle stick injury preventing arterial blood gas collection device of claim 1, wherein, The second flexible blocking piece (421) is a circular truncated cone with a small upper end and a large lower end, and the bottom of the second flexible blocking piece (421) is connected with the base (422).

8. The disposable needle-stick free arterial blood gas collection device of claim 1, wherein, A protective shell (426) is arranged on the side wall of the second flexible blocking piece (421). The protective shell (426) is connected with the base (422).

9. The single use, needle stick injury preventing arterial blood gas collection device of claim 1, wherein, A placing groove for placing the protective cover is arranged on the needle plug (11) of the syringe. Or the syringe (1) is connected with the protective cover (3) through a disposable connecting rope.

10. The single use, needle stick injury preventing, arterial blood gas collection device of claim 1, wherein, The first flexible blocking piece (411) is located at the front end of the protective cover (3), the protective cover (3) is provided with a first limiting seat (412) matched with the first flexible blocking piece (411), the front end of the protective cover (3) is sealed, and the first flexible blocking piece (411) can move between the front end of the protective cover (3) and the first limiting seat (412).

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