CN209361520U - A kind of enhanced CT anti-extravasation remaining needle - Google Patents
A kind of enhanced CT anti-extravasation remaining needle Download PDFInfo
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- CN209361520U CN209361520U CN201821638374.6U CN201821638374U CN209361520U CN 209361520 U CN209361520 U CN 209361520U CN 201821638374 U CN201821638374 U CN 201821638374U CN 209361520 U CN209361520 U CN 209361520U
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- skewback
- extravasation
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Abstract
The utility model relates to field of mechanical technique, in particular a kind of enhanced CT anti-extravasation remaining needle, including indwelling needle, the indwelling needle is equipped with puncture tip, the indwelling needle is equipped with soft needle, the soft needle is equipped with connecting tube close to the end of the indwelling needle puncture tip, the end of the connecting tube sets that there are four the annularly bifurcated pieces that equidistantly arrange, skewback is installed in the connecting tube, several unhurried current holes linearly equidistantly arranged are offered in the skewback, the side of the skewback is additionally provided with arc fixed plate.The bifurcated piece that the utility model passes through setting, when carrying out high-pressure injection, four bifurcated pieces are opened, and pass through the elastic filament of setting, the open angle for guaranteeing four bifurcated pieces within limits, finally by the skewback and arc fixed plate of setting, slows down the surge of liquid, the problem of blood vessel bears pressure maximum at remaining needle head end, and vascular wall is caused to be easily broken, is solved in high-pressure injection.
Description
Technical field
The utility model relates to field of mechanical technique, specially a kind of enhanced CT anti-extravasation remaining needle.
Background technique
Pain caused by the use of remaining needle can be reduced infant due to venipuncture repeatedly and to the fear having an injection, mitigates
The impatience of parent is convenient for clinical application, and anxious, critical patient rescue medication mitigates the workload of nurse, reduces infant pain
Bitterly, thus venous detaining needle in wide clinical application, although nurse selects suitable vessel, CT high pressure injector note when puncturing
Medicine speed is fast, and the speed routinely enhanced is 3.5ml/s, 4.0~5.5ml/s of speed of blood vessel imaging, the speed of veins of lower extremity injection
Degree is 4.5ml/s.Flow velocity is fast, and the impact force to vascular wall is the main reason for causing extravasation of contrast media greatly.At present when enhanced CT
Nurse is all made of common retained needle puncture, and in high-pressure injection, blood vessel bears pressure maximum at remaining needle head end, and most fragile
Split place.In consideration of it, it is proposed that a kind of enhanced CT anti-extravasation remaining needle.
Summary of the invention
The purpose of this utility model is to provide a kind of enhanced CT anti-extravasation remaining needles, to solve to mention in above-mentioned background technique
To bear pressure maximum for blood vessel at remaining needle head end when high-pressure injection out, and easily rupturable problem.
To achieve the above object, the utility model provides the following technical solutions:
A kind of enhanced CT anti-extravasation remaining needle, including indwelling needle, the indwelling needle is equipped with puncture tip, described to stay
Syringe needle is set equipped with soft needle, the soft needle is equipped with connecting tube, the connecting tube close to the end of the indwelling needle puncture tip
End set there are four the annularly bifurcated piece that equidistantly arranges, and four bifurcated pieces be mutually spliced to form one it is complete
Hollow cylindrical is often equipped with several elastic filament linearly equidistantly arranged between two adjacent bifurcated pieces, and
Each two end of the elastic filament is closely bonded respectively in two adjacent bifurcated on pieces.
Preferably, the connecting tube and the soft needle use integrated formed structure.
Preferably, skewback is installed in the connecting tube, it is linear equidistant that several are offered in the skewback
The unhurried current hole of arrangement, the bottom surface of the skewback are equipped with connecting plate, and the connecting plate is equipped with inclined-plane, and the skewback
Bottom surface and the inclined-plane are in the same plane, offer arc groove on the connecting plate.
Preferably, each external world unhurried current Kong Junyu is connected.
Preferably, the connecting plate closely bonds on the tube wall of the connecting tube.
Preferably, the side of the skewback is additionally provided with arc fixed plate, and the arc fixed plate is closely bonded in institute
It states on the tube wall of connecting tube, the bottom surface of the arc fixed plate is equipped with vertical connecting plates, the bottom surface peace of the vertical connecting plates
Equipped with curved baffle, several throughbores linearly equidistantly arranged are offered in the curved baffle, and each described
Throughbore is connected with the external world.
Preferably, the center of circle of concentric circles is located at the vertical connecting plates far from the indwelling needle where the curved baffle
Side.
Compared with prior art, the utility model has the beneficial effects that the utility model is being stayed by the bifurcated piece of setting
It sets syringe needle and is punctured to intravascular, indwelling needle is decorporated, and soft needle is left to remain in blood vessels, in no progress high-pressure injection, four bifurcateds
Piece is in closed state, and when carrying out high-pressure injection, four bifurcated pieces are in open state, and pass through the elastic force of setting
Silk, the open angle for guaranteeing four bifurcated pieces within limits, avoid four bifurcated pieces since open angle is excessive, produce
Raw irreversible transformation, the above process, which is realized, reduces soft needle end part pressure, to reduce the surge to vascular wall, and by setting
The skewback and arc fixed plate set can generate certain when hydraulic shock is to skewback or arc fixed plate
Reflux effect is realized the liquid in soft needle carrying out slow pressure, slows down its surge, and then avoid water velocity excessive to blood vessel
Wall causes shocking damage, and solving in high-pressure injection blood vessel at remaining needle head end, to bear pressure maximum, and vascular wall is caused to be easy
The problem of rupture.
Detailed description of the invention
Fig. 1 is the three-dimensional view of the utility model；
Fig. 2 is the three-dimensional view of the soft needle of the utility model；
Fig. 3 is the three-dimensional view that the soft needle of the utility model opens；
Fig. 4 is the enlarged drawing in the utility model Fig. 3 at A；
Fig. 5 is the explosive view of the utility model；
Fig. 6 is the three-dimensional view of the arc fixed plate of the utility model；
Fig. 7 is the three-dimensional view of the utility model skewback.
In figure: 1, indwelling needle；2, soft needle；21, connecting tube；211, skewback；2111, unhurried current hole；2112, connecting plate；
2113, inclined-plane；2114, arc groove；212, arc fixed plate；2121, vertical connecting plates；2122, curved baffle；2123, water flow
Through-hole；22, bifurcated piece；221, elastic filament.
Specific embodiment
The following will be combined with the drawings in the embodiments of the present invention, carries out the technical scheme in the embodiment of the utility model
Clearly and completely describe, it is clear that the described embodiments are only a part of the embodiments of the utility model, rather than whole
Embodiment.Based on the embodiments of the present invention, those of ordinary skill in the art are without making creative work
Every other embodiment obtained, fall within the protection scope of the utility model.
In the description of the present invention, it should be understood that term " center ", " longitudinal direction ", " transverse direction ", " length ", " width
Degree ", " thickness ", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outside",
The orientation or positional relationship of the instructions such as " clockwise ", " counterclockwise " be based on the orientation or positional relationship shown in the drawings, be only for
Convenient for description the utility model and simplify description, rather than the equipment of indication or suggestion meaning or element must have specifically
Orientation is constructed and operated in a specific orientation, therefore should not be understood as limiting the present invention.
Embodiment 1
A kind of enhanced CT anti-extravasation remaining needle, shown in as shown in Figure 1, Figure 2, Fig. 3, Fig. 4 and Fig. 5, including indwelling needle 1, indwelling
Syringe needle 1 is equipped with puncture tip, and indwelling needle 1 is equipped with soft needle 2, and soft needle 2 is equipped with close to the end of 1 puncture tip of indwelling needle
Connecting tube 21, the end of connecting tube 21 set that there are four the annularly bifurcated pieces 22 that equidistantly arrange, and four bifurcated pieces 22 are mutual
It is spliced to form a complete hollow cylindrical, it is linear equidistant that several are equipped between every two adjacent bifurcated pieces 22
The elastic filament 221 of arrangement, and 221 liang of ends of each elastic filament are closely bonded respectively on two adjacent bifurcated pieces 22.
In the present embodiment, indwelling needle 1 is whole to be made of stainless steel, and stainless steel material is not easy to get rusty and to human body
It is nontoxic, when being punctured, indwelling needle 1 is facilitated to pierce through skin.
Further, connecting tube 21 and soft needle 2 use integrated formed structure, guarantee the stability of connecting tube 21 and soft needle 2,
It avoids connecting tube 21 from being detached from soft needle 2, is trapped in human vas.
In addition, in no progress high-pressure injection, four bifurcated pieces 22 are in closed state, that is, are in hollow cylindrical, into
When horizontal high voltage is injected, four bifurcated pieces 22 are in open state, and by the elastic filament 221 of setting, guarantee four points
The open angle of forks piece 22 within limits, avoids four bifurcated pieces 22 since open angle is excessive, generates irreversible
Deformation.
It is worth noting that the length of bifurcated piece 22 be 1-2mm, on the one hand guarantee its when penetrating into intravascular, no
Vascular wall can be penetrated, on the other hand guarantees that is, vascular opening when opening, since its length is relatively short, will not will not by it
It will be contacted with vascular wall.
In the present embodiment, by the bifurcated piece 22 of setting, and in high-pressure injection, four bifurcated pieces 22 are in open shape
State realizes the pressure reduced at soft 2 ends of needle, that is, 22 position of bifurcated piece, to reduce the surge to vascular wall, solves
The problem of blood vessel bears pressure maximum at 1 end of indwelling needle when high-pressure injection, and vascular wall is caused to be easily broken.
Embodiment 2
It in concrete operations, since in high-pressure injection, pressure is bigger, is easy to rupture vascular wall, in order into one
Step guarantees the flowing velocity that liquid is reduced under high-pressure injection, that is, reduces its surge, guarantees that vascular wall will not rupture, because
This, on the basis of embodiment 1 makes improvements connecting tube 21, as a kind of preferred embodiment, as shown in Figure 6 and Figure 7, connection
Skewback 211 is installed in pipe 21, several unhurried current holes 2111 linearly equidistantly arranged are offered in skewback 211, often
A unhurried current hole 2111 is connected with the external world, and the bottom surface of skewback 211 is equipped with connecting plate 2112, and connecting plate 2112 closely bonds
On the tube wall of connecting tube 21, connecting plate 2112 is equipped with inclined-plane 2113, and the bottom surface of skewback 211 and inclined-plane 2113 are located at together
In one plane, arc groove 2114 is offered on connecting plate 2112, the side of skewback 211 is additionally provided with arc fixed plate 212, and arc
Shape fixed plate 212 closely bonds on the tube wall of connecting tube 21, and the bottom surface of arc fixed plate 212 is equipped with vertical connecting plates
2121, the bottom surface of vertical connecting plates 2121 is equipped with curved baffle 2122, and the center of circle of 2122 place concentric circles of curved baffle is located at
Side of the vertical connecting plates 2121 far from indwelling needle 1 offers several linear equidistant arrangements in curved baffle 2122
Throughbore 2123, and each throughbore 2123 is connected with the external world.
In the present embodiment, skewback 211 is closely bonded on the tube wall of connecting tube 21.
Specifically, under high-pressure injection, liquid can impact the slot of arc groove 2114 first by the arc groove 2114 of setting
On wall, then partially liq is flowed out along unhurried current hole 2111, and another part liquid is flowed through from the top of skewback 211, and due to
The inclined-plane 2113 of setting, when guaranteeing that liquid flows through inclined-plane 2113, due to the sky between 21 tube wall of inclined-plane 2113 and connecting tube
Between it is larger, liquid is in the gap between 21 tube wall of inclined-plane 2113 and connecting tube, and flowing velocity lowers, and further slows down liquid
Surge.
It is worth noting that further liquid can encounter arc when liquid is by inclined-plane 2113 and connecting tube 21 again
Shape baffle 2122, and the direct flowing of the barrier liquid of curved baffle 2122 further, play buffer function to liquid, into one
Step realizes that the flowing velocity of liquid reduces.
In the present embodiment, by the curved baffle 2122 and arc groove 2114 of setting, arc groove is collided in liquid
When 2114, realize and flow slowly to the first step of liquid, when liquid continues flow through curved baffle 2122, realize to liquid into
One step unhurried current, guarantees under high-pressure injection, the flowing velocity of liquid is relatively slow, solves water velocity and crosses conference to blood vessel
Wall causes the problem of shocking damage.
The enhanced CT anti-extravasation remaining needle of the utility model punctures skin and puncture vessel when in use, by indwelling needle 1
Enter intravascular, and it is intravascular to guarantee that the synchronous puncture skin of soft needle 2 enters, and then extracts indwelling needle 1, soft needle 2
It remaining in intravascular, does not carry out high-pressure injection at this time, four bifurcated pieces 22 are in closed state, when carrying out high-pressure injection,
Liquid can impact skewback 211 and arc fixed plate 212, in hydraulic shock to skewback 211 or arc fixed plate 212
When, certain reflux effect can be generated, realizes and the liquid in soft needle 2 is subjected to slow pressure, slow down its surge, in liquid
When flowing through bifurcated piece 22, four bifurcated pieces 22 are in open state, reduce soft 2 pressure against the ends of needle, and pass through setting
Elastic filament 221, the open angle for guaranteeing four bifurcated pieces 22 within limits, avoid four bifurcated pieces 22 due to open
Angle is excessive, generates irreversible transformation, and the above process, which is realized, reduces soft 2 pressure against the ends of needle, to reduce the impact to vascular wall
Pressure, solving in high-pressure injection blood vessel at 1 end of indwelling needle, to bear pressure maximum, causes vascular wall is crackly to ask
Topic.
Basic principles, main features, and advantages of the present invention has been shown and described above.Current row
The technical staff of industry is described in above embodiments and description it should be appreciated that the present utility model is not limited to the above embodiments
Be only the utility model preference, be not intended to limit the utility model, do not departing from the spirit and scope of the utility model
Under the premise of, the utility model also has various changes and improvements, these changes and improvements both fall within claimed it is practical
In novel range.The protection scope of the present invention is defined by the appended claims and their equivalents.
Claims (7)
1. a kind of enhanced CT anti-extravasation remaining needle, including indwelling needle (1), it is characterised in that: the indwelling needle (1) is equipped with
Puncture tip, the indwelling needle (1) are equipped with soft needle (2), and the soft needle (2) is close to the indwelling needle (1) puncture tip
End be equipped with connecting tube (21), the end of the connecting tube (21) sets that there are four the annularly bifurcated pieces that equidistantly arrange
(22), and four bifurcated pieces (22) are mutually spliced to form a complete hollow cylindrical, often divide described in adjacent two
Several elastic filament (221) linearly equidistantly arranged, and each elastic filament (221) two are equipped between forks piece (22)
End is closely bonded respectively on two adjacent bifurcated pieces (22).
2. enhanced CT anti-extravasation remaining needle according to claim 1, it is characterised in that: the connecting tube (21) with it is described soft
Needle (2) uses integrated formed structure.
3. enhanced CT anti-extravasation remaining needle according to claim 1, it is characterised in that: be equipped in the connecting tube (21)
Skewback (211), the skewback (211) is interior to offer several unhurried current holes (2111) linearly equidistantly arranged, described
The bottom surface of skewback (211) is equipped with connecting plate (2112), and the connecting plate (2112) is equipped with inclined-plane (2113), and described oblique
The bottom surface of panel (211) and the inclined-plane (2113) are in the same plane, offer arc groove on the connecting plate (2112)
(2114)。
4. enhanced CT anti-extravasation remaining needle according to claim 3, it is characterised in that: each unhurried current hole (2111) is equal
It is connected with the external world.
5. enhanced CT anti-extravasation remaining needle according to claim 3, it is characterised in that: the connecting plate (2112) is closely viscous
It connects on the tube wall of the connecting tube (21).
6. enhanced CT anti-extravasation remaining needle according to claim 3, it is characterised in that: the side of the skewback (211)
It is additionally provided with arc fixed plate (212), and the arc fixed plate (212) closely bonds on the tube wall of the connecting tube (21),
The bottom surface of the arc fixed plate (212) is equipped with vertical connecting plates (2121), the bottom surface peace of the vertical connecting plates (2121)
Equipped with curved baffle (2122), several throughbores linearly equidistantly arranged are offered in the curved baffle (2122)
(2123), and each throughbore (2123) is connected with the external world.
7. enhanced CT anti-extravasation remaining needle according to claim 6, it is characterised in that: where the curved baffle (2122)
The center of circle of concentric circles is located at side of the vertical connecting plates (2121) far from the indwelling needle (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821638374.6U CN209361520U (en) | 2018-10-10 | 2018-10-10 | A kind of enhanced CT anti-extravasation remaining needle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821638374.6U CN209361520U (en) | 2018-10-10 | 2018-10-10 | A kind of enhanced CT anti-extravasation remaining needle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209361520U true CN209361520U (en) | 2019-09-10 |
Family
ID=67838194
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821638374.6U Active CN209361520U (en) | 2018-10-10 | 2018-10-10 | A kind of enhanced CT anti-extravasation remaining needle |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209361520U (en) |
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2018
- 2018-10-10 CN CN201821638374.6U patent/CN209361520U/en active Active
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