CN208339877U - A kind of precision needle-free connecting type indwelling needle - Google Patents
A kind of precision needle-free connecting type indwelling needle Download PDFInfo
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- CN208339877U CN208339877U CN201720947101.9U CN201720947101U CN208339877U CN 208339877 U CN208339877 U CN 208339877U CN 201720947101 U CN201720947101 U CN 201720947101U CN 208339877 U CN208339877 U CN 208339877U
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Abstract
The utility model discloses a kind of accurate needle-free connecting type indwelling needles, including anti-backflow device, anti-backflow device is connected by conduit with needle stand, conduit is equipped with clip, anti-backflow device bottom is successively arranged the First stratum to connect and second step layer, and filter membrane is equipped between First stratum and second step layer；The top of needle stand is equipped with Needlestick prevention device, and Needlestick prevention device is equipped with puncture needle, and puncture needle is through the inner cavity of needle stand.The utility model is the utility model has the advantages that realize multilayer stereo structure by filter membrane, and precisely filtering rubber particle, glass fibre and insoluble drug particle etc. enter human vas with medical fluid, observes infusion last line of defense, ensure that patient's is healthy and safe.
Description
Technical field
The utility model relates to the field of medical instrument technology, it particularly relates to a kind of precision needle-free connecting type indwelling needle.
Background technique
Venous detaining needle is also known as venous catheter needle, can be retained in the conduit/casing and stainless steel of endovascular softness
Guiding puncture needle core, when use, punctures into conduit and needle core intravascular together, after conduit fully enters blood vessel, withdraws out
Needle core, only by soft catheter retaining in the blood vessels to carry out infusion treatment.
There is similar product currently on the market, but this technical solution structure is more complicated, the filter membrane of use is also fine
Film is tieed up, filter sizes 15um can not filter smaller particle, and the material used can only filter fine impurities, cause liquid low
Flow velocity influences therapeutic effect to postpone transfusion time.
For the problems in the relevant technologies, currently no effective solution has been proposed.
Utility model content
For above-mentioned technical problem in the related technology, the utility model proposes a kind of accurate needle-free connecting type indwelling needle,
Rubber particle, glass fibre and insoluble drug particle etc. can precisely be filtered and enter human vas with medical fluid, observe infusion most
One of defence line afterwards ensure that patient's is healthy and safe.
To realize the above-mentioned technical purpose, the technical solution of the utility model is achieved in that including anti-backflow device, is prevented
Backflow device is connected by conduit with needle stand, and conduit is equipped with clip, and anti-backflow device bottom is successively arranged the to connect
One step layer and second step layer are equipped with filter membrane between First stratum and second step layer；The top of needle stand is equipped with anti-needle
Thorn device, Needlestick prevention device are equipped with puncture needle, and puncture needle is through the inner cavity of needle stand.
Further, the top of Needlestick prevention device is connected with blood back flowing device, is equipped with cavity, puncture needle top inside blood back flowing device
Portion is through cavity.
Further, the aperture of the filter membrane is 0.03um-10um.
Further, the material of the filter membrane is poly (ether sulfone) film material.
Further, silica gel joint is equipped with inside the anti-backflow device.
Further, it is equipped with support column inside the anti-backflow device, the support column periphery is arranged with elastic device, institute
It states support top end and is connected with connector.
The utility model has the beneficial effects that realizing multilayer stereo structure by filter membrane, rubber particle, glass are precisely filtered
Glass fiber and insoluble drug particle etc. enter human vas with medical fluid, observe infusion last line of defense, ensure that patient's
It is healthy and safe, filter efficiency can not only be guaranteed using poly (ether sulfone) film material, and possess ultra high rate and superpower pollutant carrying capacity.
Detailed description of the invention
In order to illustrate the embodiment of the utility model or the technical proposal in the existing technology more clearly, below will be to embodiment
Needed in attached drawing be briefly described, it should be apparent that, the accompanying drawings in the following description is only the utility model
Some embodiments for those of ordinary skill in the art without creative efforts, can also be according to this
A little attached drawings obtain other attached drawings.
Fig. 1 be according to the utility model embodiment it is a kind of precision needle-free connecting type indwelling needle structural schematic diagram it
One；
Fig. 2 be according to the utility model embodiment it is a kind of precision needle-free connecting type indwelling needle structural schematic diagram it
Two；
Fig. 3 is a kind of structure of the filter membrane of precision needle-free connecting type indwelling needle according to the utility model embodiment
Schematic diagram.
In figure:
1, anti-backflow device；2, clip；3, puncture needle；4, blood back flowing device；5, Needlestick prevention device；6, conduit；7, needle stand；
8, First stratum；9, second step layer；10, filter membrane；11, silica gel joint；12, support column；13, elastic device；14, it connects
Head.
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's every other embodiment obtained, all belongs to
In the range of the utility model protection.
As shown in Figure 1-3, a kind of precision needle-free connecting type indwelling needle according to the utility model embodiment, including it is anti-
Backflow device 1, the anti-backflow device 1 are connected by conduit 6 with needle stand 7, and the conduit 6 is equipped with clip 2, described anti-reverse
Stream 1 bottom of device is successively arranged the First stratum 8 to connect and second step layer 9, the First stratum 8 and second step
Filter membrane 10 is equipped between layer 9；The top of the needle stand 7 is equipped with Needlestick prevention device 5, and the Needlestick prevention device 5, which is equipped with, to be punctured
Needle 3, the puncture needle 3 prevents medical staff's needle from stabbing through the inner cavity of needle stand 7, by Needlestick prevention device 5, to avoid blood
Liquid propagates class disease, and medical staff's operation is allowed more to feel at ease.
In a specific embodiment of the utility model, the top of the Needlestick prevention device 5 is connected with blood back flowing device 4,
Cavity is equipped with inside the blood back flowing device 4,3 top of puncture needle can facilitate through the cavity by blood back flowing device 4
Medical staff observes vein blood back in time, helps accurately to improve puncture success rate.
In a specific embodiment of the utility model, the material of the filter membrane 10 is poly (ether sulfone) film material, is used
Poly (ether sulfone) film material can not only guarantee filter efficiency, and possess ultra high rate and superpower pollutant carrying capacity.
In a specific embodiment of the utility model, the aperture of the filter membrane is 0.03um, 2um, 2.5um,
3um, 5um and 10um, this aperture will not change during filtration, not have any film while reducing Drug absorbability rate
Body falls off, and effectively prevent the adverse reactions such as clinical vein is scorching, blood vessel is hardened, localized plug and scleroma, sufficiently ensures clinic
Infusion safety.
In a specific embodiment of the utility model, it is equipped with silica gel joint 11 inside the anti-backflow device 1, passes through
Silica gel joint 11 can be realized long lasting for positive pressure, and one time liquid feeding keeps barotropic state for a long time, can repeatedly carry out liquid feeding, make
The blood entered in indwelling needle catheter slowly flows, and decreases the blood volume into conduit, to prevent thrombus plugging
Occur.
In a specific embodiment of the utility model, support column 12, the branch are equipped with inside the anti-backflow device 1
12 periphery of dagger is arranged with elastic device 13, and 12 top of support column is connected with connector 14, and using this structure, structure is simply saved
About cost.
In order to facilitate the above-mentioned technical proposal for understanding the utility model, below by way of practical new to this in specifically used mode
The above-mentioned technical proposal of type is described in detail.
When specifically used, according to accurate needle-free connecting type indwelling needle described in the utility model, front opening clip is punctured
2, so that medical fluid is passed sequentially through the cavity that First stratum 8, filter membrane 10 and second step layer 9 flow into needle stand, passes through filter membrane 10
When, rubber particle, glass fibre and insoluble drug particle can be filtered out, when puncturing, when puncture needle enters vein
After blood vessel, due to endovascular pressure be greater than blood back flowing device 5 pressure, blood along needle stand cavity and Needlestick prevention device 5, fastly
For speed by the cavity of blood backflow to blood back flowing device 5, medical staff observes that the blood back in blood back flowing device then judges to puncture successfully
Afterwards, Needlestick prevention device 5 and blood back flowing device 5 are withdrawn into needle stand 7, only by soft 7 indwelling of needle stand in the blood vessels to be infused
Treatment.
In conclusion multilayer stereo structure is realized by filter membrane by means of the above-mentioned technical proposal of the utility model,
Precisely filtering rubber particle, glass fibre and insoluble drug particle etc. enter human vas with medical fluid, observe and are infused last
Road defence line, ensure that patient's is healthy and safe, medical staff can be facilitated to observe vein blood back in time by blood back flowing device 4, had
Help accurately improve puncture success rate.
The above is only the preferred embodiment of the utility model only, is not intended to limit the utility model, all at this
Within the spirit and principle of utility model, any modification, equivalent replacement, improvement and so on should be included in the utility model
Protection scope within.
Claims (6)
1. a kind of precision needle-free connecting type indwelling needle, including anti-backflow device (1), the anti-backflow device (1) pass through conduit (6)
It is connected with needle stand (7), the conduit (6) is equipped with clip (2), which is characterized in that anti-backflow device (1) bottom is successively
Equipped with the First stratum (8) and second step layer (9) to connect, between the First stratum (8) and second step layer (9)
Equipped with filter membrane (10)；The top of the needle stand (7) is equipped with Needlestick prevention device (5), and the Needlestick prevention device (5) is equipped with and wears
Pricker (3), inner cavity of the puncture needle (3) through needle stand (7).
2. precision needle-free connecting type indwelling needle according to claim 1, which is characterized in that the Needlestick prevention device (5)
Top is connected with blood back flowing device (4), is equipped with cavity inside the blood back flowing device (4), through described at the top of the puncture needle (3)
Cavity.
3. precision needle-free connecting type indwelling needle according to claim 1, which is characterized in that the material of the filter membrane (10)
For poly (ether sulfone) film material.
4. precision needle-free connecting type indwelling needle according to claim 1, which is characterized in that the aperture of the filter membrane (10)
For 0.03um-10um.
5. precision needle-free connecting type indwelling needle according to claim 1-4, which is characterized in that the counterflow-preventing dress
It sets and is equipped with silica gel joint (11) inside (1).
6. precision needle-free connecting type indwelling needle according to claim 1-4, which is characterized in that the counterflow-preventing dress
It sets and is equipped with support column (12) inside (1), support column (12) periphery is arranged with elastic device (13), support column (12) top
End is connected with connector (14).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720947101.9U CN208339877U (en) | 2017-08-01 | 2017-08-01 | A kind of precision needle-free connecting type indwelling needle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720947101.9U CN208339877U (en) | 2017-08-01 | 2017-08-01 | A kind of precision needle-free connecting type indwelling needle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208339877U true CN208339877U (en) | 2019-01-08 |
Family
ID=64874120
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720947101.9U Active CN208339877U (en) | 2017-08-01 | 2017-08-01 | A kind of precision needle-free connecting type indwelling needle |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208339877U (en) |
-
2017
- 2017-08-01 CN CN201720947101.9U patent/CN208339877U/en active Active
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