CN210990337U

CN210990337U - Hemospast capable of preventing needle stick injury

Info

Publication number: CN210990337U
Application number: CN201922025372.0U
Authority: CN
Inventors: 徐敬娜; 郭颖
Original assignee: Peking Union Medical College Hospital Chinese Academy of Medical Sciences
Current assignee: Peking Union Medical College Hospital Chinese Academy of Medical Sciences
Priority date: 2019-11-21
Filing date: 2019-11-21
Publication date: 2020-07-14
Anticipated expiration: 2029-11-21

Abstract

The utility model discloses a hemospast for preventing needle stick injury, belonging to the technical field of medical appliances, its technical essential includes vacuum tube and bloodletting mechanism, vacuum tube one end is equipped with the rubber end cap, bloodletting mechanism includes the cylinder subassembly, be equipped with first syringe needle in the cylinder subassembly, the second syringe needle, first spring and second spring, be equipped with first sliding block on the first syringe needle, be equipped with the second sliding block on the second syringe needle, first syringe needle, the second syringe needle is respectively through first sliding block, the second sliding block connection of sliding is in the cylinder subassembly, first syringe needle slides with the second syringe needle and is connected and the intercommunication, first spring, the second spring cup joints respectively on first syringe needle, on the second syringe needle, first sliding block side, second sliding block side is the first driving block of fixedly connected with respectively, the second driving block, cylinder subassembly side is equipped with the sliding groove of first driving block of lockable and second driving block. The utility model aims at providing a prevent bloodletting instrument that acupuncture was hindered for to patient's blood extraction, and save.

Description

Hemospast capable of preventing needle stick injury

Technical Field

The utility model relates to the technical field of medical appliances, concretely relates to prevent bloodletting instrument that acupuncture hindered.

Background

A hemospast is a device used in a medical institution for blood extraction, and is the most common medical item in nursing work. In the prior art, a syringe is generally adopted as a blood drawing device, the needle of the syringe is sharp, a nursing staff often has a stabbing situation in the processes of pulling out the needle, bending and destroying the needle and throwing a picking needle cylinder into a sharp instrument box, and the syringe is inconvenient to use because blood needs to be injected into a vacuum tube again for storage after blood drawing.

SUMMERY OF THE UTILITY MODEL

In order to overcome the deficiency of the background art, the utility model provides a hemospast for preventing needle stick injury, which solves the problems existing in the prior art.

The technical scheme of the utility model is realized like this: a hemospast for preventing needle stick injuries comprises a vacuum tube and a hemospast mechanism, wherein one end of the vacuum tube is provided with a rubber plug, the hemospast mechanism comprises a needle cylinder component, a first needle, a second needle, a first spring and a second spring are arranged in the needle cylinder component, one end of the needle cylinder component is detachably and fixedly connected with one end of the vacuum tube, the other end of the needle cylinder component is provided with an opening, one end of the first needle is provided with a first sliding block, one end of the second needle is provided with a second sliding block, the first needle is connected in the needle cylinder component in a sliding mode through the first sliding block, the second needle is connected in the needle cylinder component in a sliding mode through the second sliding block, one end of the first needle is connected with one end of the second needle in a sliding mode, the first needle is communicated with the second needle, the first spring is sleeved on the first needle and provides a force for the first needle to move towards the direction, and the second, and provide a power of moving toward the opening direction for the second syringe needle, first driving block of first sliding block side fixedly connected with, second sliding block side fixedly connected with second driving block, the sliding groove of first driving block of lockable and second driving block is seted up to the cylinder subassembly side.

Preferably, the sliding groove comprises a sliding section, one end of the sliding section is provided with a first locking section used for locking the first driving block, the other end of the sliding section is provided with a second locking section used for locking the second driving block, the first locking section and the second locking section are L-shaped, the first locking section is connected with a first clamping groove, and the second locking section is connected with a second clamping groove.

Preferably, the sliding groove comprises a sliding section, one end of the sliding section is provided with a first locking section for locking the first driving block, and the other end of the sliding section is provided with a second locking section for locking the second driving block; the first locking section and the second locking section are I-shaped, and locking convex points are respectively arranged in the first locking section and the second locking section.

As a preferred scheme, one end of the second needle head is provided with a connecting pipe, the first needle head is connected with the second needle head in a sliding manner through the connecting pipe, and the first needle head, the connecting pipe and the second needle head are communicated with each other; furthermore, the first needle head and the connecting pipe are integrally formed.

As a preferred scheme, one end of the needle cylinder component is in threaded connection with one end of the vacuum tube; furthermore, the needle cylinder assembly comprises a needle cylinder body and a connecting piece, one end of the needle cylinder body is in threaded connection with one end of the connecting piece, and the other end of the connecting piece is in threaded connection with one end of the vacuum tube.

After the structure more than adopting, the beneficial effects of the utility model are that: the needle head can be contracted in the needle cylinder component before the hemospast is not used, so that medical care personnel can be prevented from being punctured by the needle head; this hemospast draws blood through the mode of vacuum hemospast, can realize the sealed to drawing blood after the hemospast finishes to can be with cylinder body and vacuum tube separation, the blood storage of being convenient for, this hemospast compact structure, convenient to use has good economic benefits.

Drawings

The present invention will be described in further detail with reference to the following examples, which are not intended to limit the invention.

Fig. 1 is a schematic view of an overall structure of a first needle and a second needle when the first needle and the second needle are idle in an embodiment of the present invention;

fig. 2 is a partial structural sectional view of the first needle and the second needle when the first needle and the second needle are idle in the embodiment of the present invention;

fig. 3 is a schematic view of the overall structure of the first needle and the second needle during operation according to the embodiment of the present invention;

FIG. 4 is a partial sectional view of the first and second needles during operation according to the embodiment of the present invention;

fig. 5 is a cross-sectional view of the overall structure of an embodiment of the present invention;

fig. 6 is a schematic structural diagram of the first locking section and the second locking section in the form of L according to the embodiment of the present invention;

fig. 7 is a schematic structural diagram of the embodiment of the present invention when the first locking section and the second locking section are I-shaped.

In the figure: the syringe comprises a vacuum tube 1, a rubber plug 2, a needle head 4, a needle head 5, a needle head second, a spring 6, a spring 7, a spring second, an opening 8, a sliding groove 9, a syringe body 31, a connecting piece 32, a sliding block 41, a first sliding block 42, a first driving block 51, a second sliding block 52, a second driving block 53, a connecting tube 91, a sliding section 92, a first locking section 93, a second locking section 94, a first clamping groove 95, a second clamping groove 95 and a locking salient point 96.

Detailed Description

Referring to fig. 1-5, the utility model relates to a blood drawing device for preventing needle stick injuries, which comprises a vacuum tube 1 and a blood drawing mechanism, wherein one end of the vacuum tube 1 is provided with a rubber plug 2, the blood drawing mechanism comprises a syringe component, a first needle 4, a second needle 5, a first spring 6 and a second spring 7 are arranged in the syringe component, one end of the syringe component is detachably and fixedly connected with one end of the vacuum tube 1, the other end of the syringe component is provided with an opening 8, one end of the first needle 4 is provided with a first sliding block 41, one end of the second needle 5 is provided with a second sliding block 51, the first needle 4 is connected in the syringe component in a sliding way through the first sliding block 41, the second needle 5 is connected in the syringe component in a sliding way through the second sliding block 51, one end of the first needle 4 is connected with one end of the second needle 5 in a sliding way, the first needle 4 is communicated with the second needle 5, the first spring 6 is, a force moving towards the vacuum tube 1 is provided for the first needle 4, the second spring 7 is sleeved on the second needle 5 and provides a force moving towards the opening 8 for the second needle 5, the side surface of the first sliding block 41 is fixedly connected with a first driving block 42, the side surface of the second sliding block 51 is fixedly connected with a second driving block 52, and the side surface of the syringe component is provided with a sliding groove 9 capable of locking the first driving block 42 and the second driving block 52; when the blood sucking device is used, the first sliding block 41 is pushed to move towards the opening 8 through the first driving block 42, in the pushing process, the first spring 6 is compressed, the first needle 4 gradually extends out of the opening 8, the pushing can be stopped after the first driving block 42 is locked at one end of the sliding groove 9, then the first needle 4 is inserted into a blood vessel, then the second sliding block 51 is pushed to move towards the vacuum tube 1 through the second driving block 52, in the pushing process, the second spring 7 is compressed, the second needle 5 is gradually inserted into the rubber plug 2 until entering the vacuum tube 1, when the second needle 5 enters the vacuum tube 1, blood in the blood vessel starts to be sucked into the vacuum tube 1 due to negative pressure, the blood sucking function is realized, and then the pushing can be stopped after the second driving block 52 is locked at one end of the sliding groove 9 by an operator; when the blood drawing is finished, the first needle 4 is firstly pulled out of the blood vessel, then the first driving block 42 is unlocked, the first needle 4 retracts into the syringe assembly under the elasticity of the first elastic piece, then the second driving block 52 is unlocked, the second needle 5 retracts into the syringe assembly under the elasticity of the second elastic piece, and meanwhile, the rubber plug 2 punctures the second needle 5 into the formed hole to shrink due to the self characteristic, so that the vacuum tube 1 is sealed; the hemospast can be sealed by a sealing bag after production, so that the hemospast is prevented from being polluted by dust; furthermore, the first driving block 42, the second driving block 52 and the sliding slot 9 can be arranged in two symmetrical groups for use, so as to facilitate pushing the first sliding block 41 and the second sliding block 51.

Preferably, as shown in fig. 6, the sliding groove 9 includes a sliding section 91, one end of the sliding section 91 is provided with a first locking section 92 for locking the first driving block 42, the other end of the sliding section 91 is provided with a second locking section 93 for locking the second driving block 52, the sliding section 91 is mainly used for guiding the first driving block 42 and the second driving block 52, when the hemospast is not used, the first driving block 42 and the second driving block 52 are located in the sliding section 91, the first locking section 92 and the second locking section 93 are L-shaped, locking can be completed by manually pushing the first driving block 42 and the second driving block 52 into the first locking section 92 and the second locking section 93, further, the first locking section 92 is connected with a first locking groove 94, the second locking section 93 is connected with a second locking groove 95, when the first driving block 42 enters the first locking section 92, the first spring 6 is in a gradually compressed state, when the first driving block 42 enters the first locking section 92, the first locking section 94 utilizes the first spring 6 to change the first locking section 94 into the second locking groove 94, and prevents the first locking section from sliding from the first locking groove 42, the first locking groove 92, the second locking section 94, and the sliding section 91 from sliding groove 92, and the first locking groove 94, and the second locking section 94, and the sliding section 91 can avoid the problem of the sliding section 90.

Preferably, as shown in fig. 7, the sliding groove 9 includes a sliding section 91, one end of the sliding section 91 is provided with a first locking section 92 for locking the first driving block 42, the other end of the sliding section 91 is provided with a second locking section 93 for locking the second driving block 52, the sliding section 91 is mainly used for guiding the first driving block 42 and the second driving block 52, and when the hemospast is not used, the first driving block 42 and the second driving block 52 are located in the sliding section 91; the first locking section 92 and the second locking section 93 are in an I shape, locking convex points 96 are respectively arranged in the first locking section 92 and the second locking section 93, the first driving block 42 and the second driving block 52 can be locked in the first locking section 92 and the second locking section 93 through the locking convex points 96, when the first driving block 42/the second driving block 52 passes through the locking convex points 96, the corresponding first locking section 92/the second locking section 93 deforms under the condition of applying external force, and the first driving block 42/the second driving block 52 can pass through the locking convex points 96.

Preferably, a connecting tube 53 is arranged at one end of the second needle 5, the first needle 4 is connected with the second needle 5 through the connecting tube 53 in a sliding manner, the first needle 4, the connecting tube 53 and the second needle 5 are communicated with each other, the connecting tube 53 can also be arranged on the first needle 4, although the length of the syringe assembly is related to the lengths of the first needle 4 and the second needle 5, and in order to shorten the length of the syringe assembly, it is more reasonable to arrange the connecting tube 53 at one end of the second needle 5; further, the first needle 4 and the connecting tube 53 are integrally formed, so that the processing and installation are convenient.

As the preferred scheme, one end of the needle cylinder component is in threaded connection with one end of the vacuum tube 1, so that the needle cylinder component is convenient to disassemble; furthermore, the syringe component comprises a syringe body 31 and a connecting piece 32, one end of the syringe body 31 is in threaded connection with one end of the connecting piece 32, the other end of the connecting piece 32 is in threaded connection with one end of the vacuum tube 1, and the connecting piece 32 can be left on the vacuum tube 1 after being disassembled, so that the rubber plug 2 is prevented from falling off.

Preferably, in order to facilitate the post-treatment of the disassembled syringe assembly, a film may be laminated on one end of the syringe assembly near the vacuum tube 1, a hole slightly larger than the second needle 5 is formed in the center of the film to avoid the second needle 5, and the film is arranged to limit the second spring 7 in the syringe body 31 to prevent the parts in the syringe body 31 from falling out.

The fixed connection is conventional connection modes such as welding, bonding and the like.

The above embodiment is the preferred embodiment of the present invention, which is only used to facilitate the explanation of the present invention, it is not right to the present invention, which makes the restriction on any form, and any person who knows commonly in the technical field can use the present invention to make the equivalent embodiment of local change or modification without departing from the technical features of the present invention.

Claims

1. The utility model provides a prevent hemospast of needle stick wound, includes vacuum tube (1), vacuum tube (1) one end is equipped with rubber end cap (2), its characterized in that: the blood drawing device comprises a needle cylinder assembly, a first needle (4), a second needle (5), a first spring (6) and a second spring (7) are arranged in the needle cylinder assembly, one end of the needle cylinder assembly is detachably and fixedly connected with one end of a vacuum tube (1), the other end of the needle cylinder assembly is provided with an opening (8), one end of the first needle (4) is provided with a first sliding block (41), one end of the second needle (5) is provided with a second sliding block (51), the first needle (4) is connected in the needle cylinder assembly in a sliding manner through the first sliding block (41), the second needle (5) is connected in the needle cylinder assembly in a sliding manner through the second sliding block (51), one end of the first needle (4) is connected with one end of the second needle (5) in a sliding manner, the first needle (4) is communicated with the second needle (5), the first spring (6) is sleeved on the first needle (4), and provide a power of moving toward vacuum tube (1) direction for first syringe needle (4), second spring (7) cup joint on second syringe needle (5) to for second syringe needle (5) provide a power of moving toward opening (8) direction, first driving block (42) of first sliding block (41) side fixedly connected with, second driving block (52) of second sliding block (51) side fixedly connected with, the sliding groove (9) of first driving block (42) of lockable and second driving block (52) is seted up to the syringe subassembly side.

2. A blood extractor for preventing needle stick injuries as claimed in claim 1, wherein: the sliding groove (9) comprises a sliding section (91), one end of the sliding section (91) is provided with a first locking section (92) used for locking the first driving block (42), and the other end of the sliding section (91) is provided with a second locking section (93) used for locking the second driving block (52).

3. A blood extractor for preventing needle stick injuries as claimed in claim 2, wherein the first locking section (92) and the second locking section (93) are L-shaped.

4. A blood extractor for preventing needle stick injuries as claimed in claim 3, wherein: the first locking section (92) is connected with a first clamping groove (94), and the second locking section (93) is connected with a second clamping groove (95).

5. A blood extractor for preventing needle stick injuries as claimed in claim 2, wherein: the first locking section (92) and the second locking section (93) are I-shaped, and locking convex points (96) are respectively arranged in the first locking section (92) and the second locking section (93).

6. A blood extractor for preventing needle stick injuries as claimed in claim 1, wherein: second syringe needle (5) one end is equipped with connecting pipe (53), first syringe needle (4) slide through connecting pipe (53) and second syringe needle (5) and be connected, first syringe needle (4), connecting pipe (53), second syringe needle (5) communicate each other.

7. The hemospast for preventing needle stick injuries of claim 6, wherein: the first needle head (4) and the connecting pipe (53) are integrally formed.

8. A blood extractor for preventing needle stick injuries as claimed in claim 1, wherein: one end of the needle cylinder component is in threaded connection with one end of the vacuum tube (1).

9. A blood extractor for preventing needle stick injuries as claimed in claim 8, wherein: the syringe component comprises a syringe body (31) and a connecting piece (32), one end of the syringe body (31) is in threaded connection with one end of the connecting piece (32), and the other end of the connecting piece (32) is in threaded connection with one end of the vacuum tube (1).