CN213249127U - Artery is put pipe and is got blood and use syringe - Google Patents
Artery is put pipe and is got blood and use syringe Download PDFInfo
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- CN213249127U CN213249127U CN202021533705.7U CN202021533705U CN213249127U CN 213249127 U CN213249127 U CN 213249127U CN 202021533705 U CN202021533705 U CN 202021533705U CN 213249127 U CN213249127 U CN 213249127U
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Abstract
The utility model relates to an artery is put a tub and is got blood device field, especially relates to an artery is put a tub and is got blood and use syringe, include: an outer syringe and an inner syringe; wherein, the outer syringe comprises a first syringe and a first nipple fixed at the bottom end of the first syringe. The inner injector comprises a second needle cylinder, a second nipple, a first piston, a second piston and a piston rod, the second nipple is fixed at the bottom end of the second needle cylinder, and the outer diameter of the second nipple is smaller than the inner diameter of the first nipple; the first piston is positioned in the first syringe, the diameter of the first piston is equal to the inner diameter of the outer syringe, and the first piston is fixed on the second nipple; the second piston is positioned in the inner cavity of the second needle cylinder and is fixed at one end of the piston rod, and the other end of the piston rod is positioned outside the second needle cylinder. The utility model discloses a this kind of syringe can accomplish artery blood gas analysis blood sample acquisition work through once getting blood, convenient and fast, and is simple high-efficient.
Description
Technical Field
The utility model relates to an artery is put the pipe and is got blood device field, especially relates to an artery is put pipe and is got blood and use syringe.
Background
The information disclosed in the background of the invention is only for enhancement of understanding of the general background of the invention and is not necessarily to be construed as an admission or any form of suggestion that this information constitutes prior art that is already known to a person of ordinary skill in the art.
The common clinical practice of artery catheterization is that the radial artery is put the pipe, mainly used real-time arterial pressure detects (because the artery puts the pipe pressure great, puts the pipe unobstructed for maintaining the artery, simultaneously in order to detect blood pressure, need continuously pressurize to the artery in the trace infusion), also can follow this and put the pipe simultaneously and get blood (get blood mainly used artery blood gas analysis, all the other examinations mainly get blood from the vein department). The procedure for taking blood from this catheterization is relatively complex, requiring application to two syringes, and requires two disconnections of the arterial catheterization: the arterial cannula switch is first closed, the first syringe is connected with the arterial cannula, then the arterial cannula switch is opened, about 5ml of blood is taken out, the blood is mixed with the input liquid and must be discarded, at the moment, the steps are repeated, the arterial cannula switch is closed, the second syringe is connected with the arterial cannula switch, then the arterial cannula switch is opened, and about 1-2ml of blood is taken out for arterial blood gas analysis. Therefore, the current methods have the defects of complicated steps, workload increase, bleeding increase, infection risk increase and the like.
SUMMERY OF THE UTILITY MODEL
To foretell problem, the utility model provides an artery is put the pipe and is got blood and use syringe, this kind of syringe can be through once getting blood and can accomplish artery blood gas analysis blood sample and obtain work, convenient and fast, simple high-efficient. In order to achieve the above object, the technical solution of the present invention is as follows.
An arterial catheterization syringe for blood sampling, comprising: an outer syringe and an inner syringe; wherein, the outer syringe comprises a first syringe and a first nipple fixed at the bottom end of the first syringe. The inner injector comprises a second needle cylinder, a second nipple, a first piston, a second piston and a piston rod, the second nipple is fixed at the bottom end of the second needle cylinder, and the outer diameter of the second nipple is smaller than the inner diameter of the first nipple; the first piston is positioned in the first syringe, the diameter of the first piston is equal to the inner diameter of the outer syringe, and the first piston is fixed on the second nipple; the second piston is positioned in the inner cavity of the second needle cylinder and is fixed at one end of the piston rod, and the other end of the piston rod is positioned outside the second needle cylinder.
Further, a piston handle is fixed at the other end of the piston rod.
Furthermore, be fixed with one-way flap on the inner chamber bottom surface of second cylinder, and one-way flap covers the intercommunication mouth of second nipple and second cylinder inner chamber, one-way flap can make blood get into in the second cylinder inner chamber from the outside, and can not flow out from the second cylinder inner chamber, prevents that blood outflow from polluting the blood sample in the first cylinder in the second cylinder.
Further, first piston and second piston are the rubber buffer.
Further, the syringe further comprises a stopper which is fixed on the inner wall of the top end of the first syringe so as to limit the first piston and prevent the first piston from sliding out of the first syringe.
Furthermore, the center of the first piston is provided with a through hole, the first piston is bonded at the bottom end of the second needle cylinder after the second nipple passes through the through hole, or the first piston is fixed on the second needle cylinder through an annular clamping device on the second nipple.
Furthermore, first cylinder and second cylinder are all made by transparent material to the real-time observation sample condition of being convenient for.
Compared with the prior art, the utility model discloses following beneficial effect has: the utility model discloses a syringe is bilayer structure, wherein interior syringe stays in interior syringe through the blood sample that interior syringe will be adulterated with input liquid earlier during the use as piston and piston rod of outer syringe, then utilize the piston effect of interior syringe to continue to absorb the blood sample that does not dope input liquid and get into in the outer syringe to blood sample in the outer syringe of blood pollution through one-way flap in preventing interior syringe, thereby can accomplish arterial blood gas analysis blood sample through once getting blood and acquire work, convenient and fast, and is simple high-efficient.
Drawings
The accompanying drawings, which form a part of the specification, are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention without unduly limiting the scope of the invention.
Fig. 1 is a schematic structural view of an outer syringe in an embodiment of the present invention.
Fig. 2 is a schematic structural diagram of an inner injector in an embodiment of the present invention.
Fig. 3 is a schematic structural view of an injector for arterial catheterization and blood sampling in the embodiment of the present invention.
Fig. 4 is a schematic structural view of an inner injector in another embodiment of the present invention.
Fig. 5 is a schematic structural view of an arterial catheterization blood sampling syringe according to another embodiment of the present invention.
The scores in the figure represent: 101-first syringe, 102-first nipple, 104-stopper, 201-second syringe, 202-second nipple, 203-first piston, 204-second piston, 205-piston rod, 206-piston handle, 207-one-way flap.
Detailed Description
It should be noted that the following detailed description is exemplary and is intended to provide further explanation of the invention. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs.
It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments in accordance with the invention. As used herein, the singular is intended to include the plural unless the context clearly dictates otherwise. Furthermore, it will be further understood that the terms "comprises" and/or "comprising," when used in this specification, specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof.
For convenience of description, the words "upper", "lower", "left" and "right" in the present application, if any, merely indicate that the device or element referred to in the present application is constructed and operated in a particular orientation, and thus should not be construed as limiting the present invention, since they are merely intended to be oriented in the upper, lower, left and right directions of the drawings themselves, and not to limit the structure, but merely to facilitate the description of the invention and to simplify the description.
Term interpretation section: the terms "mounted," "connected," "fixed," and the like in the present invention are to be understood in a broad sense, for example, they may be fixedly connected, detachably connected, or integrated; the two components can be connected mechanically, directly or indirectly through an intermediate medium, or connected internally or in an interaction relationship, and those skilled in the art can understand the specific meaning of the above terms in the present invention according to specific situations.
As mentioned above, the existing method for analyzing blood sample by arterial blood gas through arterial catheterization still has the disadvantages of complicated steps, increased workload, increased bleeding, increased infection risk, etc. Therefore, the utility model provides an injector for taking blood by placing artery; the invention will now be further described with reference to the drawings and specific examples.
Referring to fig. 1-3, the arterial catheterization syringe shown in the drawings mainly comprises: an outer syringe and an inner syringe; a portion of the inner syringe is disposed within the outer syringe, and the inner syringe serves both as a pre-stage blood sample extraction and storage device and as a plunger and piston for the outer syringe to serve as an acquisition device for analyzing the blood sample.
In particular, for the outer syringe, it comprises a first syringe 101 and a first teat 102. The first needle cylinder is a cylinder body with an opening at one end and a closed inner cavity at the other end, and the first nipple 102 is fixed on the end surface of the closed end of the first needle cylinder 101 and is communicated with the inner cavity.
For the inner injector, it includes a second syringe 201, a second nipple 202, a first piston 203, a second piston 204 and a piston rod 205, the second nipple 202 is fixed at the bottom end of the second syringe 201, and the outer diameter of the second nipple 202 is smaller than the inner diameter of the first nipple 102; the first piston 203 is positioned in the first syringe 101, the diameter of the first piston 203 is equal to the inner diameter of the outer syringe 1, and the first piston 203 is fixed on the second nipple 202; the second piston 204 is located in the inner cavity of the second syringe 201, the second piston 204 is fixed at one end of the piston rod 205, and the other end of the piston rod 205 is located outside the second syringe 201. A piston handle 206 is fixed at the other end of the piston rod 205.
Further, referring to fig. 4, in other embodiments, a one-way flap 207 is fixed on the bottom surface of the inner cavity of the second syringe 201, and the one-way flap 207 covers the communication port between the second nipple 202 and the inner cavity of the second syringe, and the one-way flap enables blood to enter the inner cavity of the second syringe from the outside and not to flow out of the inner cavity of the second syringe, so that blood in the inner syringe is prevented from contaminating blood samples in the outer syringe.
Further, in other embodiments, the first piston 203 has a through hole in the center, and after the second nipple 202 passes through the through hole, the first piston 203 is adhered to the bottom end of the second syringe 201, or the first piston 203 is fixed on the second syringe 201 by an annular stopper on the second nipple 202.
Further, referring to fig. 5, in other embodiments, a stopper 104 is further included, and is fixed to an inner wall of the top end of the first syringe to limit the first piston and prevent the first piston from sliding out of the first syringe.
In use, the first teat 102 of the outer syringe is connected to the arterial cannula, the second teat 202 is positioned in the first teat 102, the piston rod 205 is then drawn outwards, the spiked infusion liquid blood (the previous blood sample) enters the second syringe 201, the inner syringe, and the drawing outwards is stopped when the second piston 204 reaches the top of the second syringe 201. Then the whole inner syringe is pumped outwards through the second syringe 201, blood enters the outer syringe, the outward pumping is stopped when the first piston 203 reaches the position of the stopper 104, and then the linkage of the outer syringe and the arterial catheterization is disconnected, so that the blood taking is completed. At the moment, the blood is divided into two independent parts, the blood in the outer injector is the blood needed by the analysis and detection of arterial blood gas, and after the detection is finished, the whole injector is discarded. Therefore, the syringe of this embodiment can accomplish the work of obtaining of artery blood gas analysis blood sample of artery catheterization department through once getting blood, convenient and fast, simple high-efficient.
Finally, it should be understood that any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention. Although the present invention has been described with reference to the accompanying drawings, it is not intended to limit the scope of the present invention, and those skilled in the art should understand that various modifications or variations that can be made by those skilled in the art without inventive work are still within the scope of the present invention.
Claims (7)
1. An artery is put a tub syringe for blood sampling which characterized in that includes:
the outer syringe comprises a first syringe and a first nipple fixed at the bottom end of the first syringe;
an inner syringe comprising a second syringe, a second nipple, a first piston, a second piston, and a piston rod;
wherein the second nipple is fixed at the bottom end of the second needle cylinder, and the outer diameter of the second nipple is smaller than the inner diameter of the first nipple;
the first piston is positioned in the first syringe, the diameter of the first piston is equal to the inner diameter of the outer syringe, and the first piston is fixed on the second nipple;
the second piston is positioned in the inner cavity of the second needle cylinder and is fixed at one end of the piston rod, and the other end of the piston rod is positioned outside the second needle cylinder.
2. The arterial cannulation blood collection syringe of claim 1, wherein a plunger shaft is fixed to the other end of the plunger rod.
3. The arterial catheterization blood sampling syringe of claim 1, wherein a one-way flap is fixed on the bottom surface of the inner cavity of the second syringe, and the one-way flap covers the communication port between the second nipple and the inner cavity of the second syringe.
4. The syringe for arterial catheterization of claim 1, wherein the first piston has a through hole in the center, and the first piston is adhered to the bottom end of the second syringe after the second nipple passes through the through hole, or is fixed on the second syringe through an annular stopper on the second nipple.
5. The arterial cannulation blood collection syringe of claim 1, further comprising a stopper fixed to an inner wall of the top end of the first barrel.
6. An arterial cannulation blood collection syringe according to any one of claims 1 to 5, wherein the first and second pistons are rubber stoppers.
7. The arterial catheterization blood sampling syringe of any one of claims 1-5, wherein the first syringe and the second syringe are made of transparent material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021533705.7U CN213249127U (en) | 2020-07-29 | 2020-07-29 | Artery is put pipe and is got blood and use syringe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021533705.7U CN213249127U (en) | 2020-07-29 | 2020-07-29 | Artery is put pipe and is got blood and use syringe |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN213249127U true CN213249127U (en) | 2021-05-25 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021533705.7U Active CN213249127U (en) | 2020-07-29 | 2020-07-29 | Artery is put pipe and is got blood and use syringe |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN213249127U (en) |
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2020
- 2020-07-29 CN CN202021533705.7U patent/CN213249127U/en active Active
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