CN201481963U - Cladding hollow vein indwelling needle - Google Patents
Cladding hollow vein indwelling needle Download PDFInfo
- Publication number
- CN201481963U CN201481963U CN2009201762543U CN200920176254U CN201481963U CN 201481963 U CN201481963 U CN 201481963U CN 2009201762543 U CN2009201762543 U CN 2009201762543U CN 200920176254 U CN200920176254 U CN 200920176254U CN 201481963 U CN201481963 U CN 201481963U
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- CN
- China
- Prior art keywords
- needle
- water
- infiltration
- expansion
- cladding
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- Expired - Fee Related
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- Infusion, Injection, And Reservoir Apparatuses (AREA)
Abstract
A cladding hollow vein indwelling needle belongs to the field of medical appliances, and comprises a needle head, a water seepage anti-expansion cladding, a needle seat and an infusion tube. The needle head is coated by the water seepage anti-expansion cladding, a needle body formed by the needle head and the water seepage anti-expansion cladding is fixed on the needle seat, and the needle seat is connected with the infusion tube. The needle head is a hollow cylinder or a triangular prism, and is made of a material which has higher hardness in a dry environment and becomes soft in water. The water seepage anti-expansion cladding is made of a water seepage anti-expansion material which has the water seepage function but has no volume expansion in water. The utility model is characterized in that the water seepage anti-expansion cladding can efficiently control the problems that the needle head has volume expansion and narrower and blocked inner diameter after meeting water, so that the utility model can be used for blood vessels with smaller diameters.
Description
Technical field
This utility model relates to a kind of samdwich hollow venous detaining needle, belongs to medical instruments field.
Background technology
At present known hollow venous detaining needle is made up of the impervious barrier that is fixed on the syringe needle on the needle body base and is fixed on syringe needle inside.Advantage with this kind venous detaining needle is that simple in structure, clinical manipulation is easy, uses health.But the needle section of this venous detaining needle is divided into and has more low-expansion hydrogel and be made, so this syringe needle after entering human body small volumetric expansion can take place.Therefore this pin only is fit to the trunk of human body, and is not suitable for little blood vessel.
Summary of the invention
In order to overcome the deficiencies in the prior art, this utility model provides a kind of cladding structure of having, the hollow venous detaining needle of covering because its syringe needle inner and outer wall has the anti-expanded clad of one deck infiltration, runs into expansible problem behind the blood so this structure can be controlled needle body effectively.
The purpose of this utility model is achieved through the following technical solutions: the hollow venous detaining needle of a kind of covering is made up of syringe needle, the anti-covering that expands of infiltration, needle stand, tube for transfusion.It is characterized in that: the anti-bloated covering of infiltration wraps up syringe needle, and the anti-needle body that expands covering and the two common composition of syringe needle of infiltration is fixed on the needle stand, and needle stand links to each other with tube for transfusion.
The hollow venous detaining needle of described covering is characterized in that; The anti-covering that expands of infiltration with having infiltration function but the infiltration that volume can not expand after running into water prevent expanding material and make.As micropore polysulfone membrane or polyamide film with infiltration function.
Syringe needle by meet behind the water can deliquescing material make, this material has higher hardness under drying regime, the slight expansion deliquescing of meeting when meeting water, tension is anti-squeezes, [note: this material also is Adaptable polymer (adaptation polymer) or Sea cucumbers inspire switchable material (Stichopus japonicus exciting switch material) as high intensity hydrogel or Stimuli-responsive polymernanocomposites (irritant reaction polymer nanocomposites), this material is that a kind of chance water has higher hardness before, meets the composite of water meeting deliquescing afterwards.Particulars is published in, the 63-67 page or leaf of the U.S. " Science " magazine 2008-03-07 phase e-magazine.]
The beneficial effects of the utility model are: be wrapped in the anti-covering that expands of the outer field infiltration of syringe needle and can effectively control syringe needle and meet that volume can expand the problem that can narrow down, block with internal diameter after body runs into water behind the water, so this utility model can be used for the thinner blood vessel of diameter.
Description of drawings
Accompanying drawing is a structural representation of the present utility model.
Among the figure: 1. covering 3. needle stands 4. tube for transfusions that expand are prevented in syringe needle 2. infiltrations.
The specific embodiment mode
Connect below that the utility model is described in further detail with specific embodiment.
Accompanying drawing can be used as the structural representation that this utility model specifically is an example.The hollow venous detaining needle of a kind of covering is prevented bloated covering (2), needle stand (3), tube for transfusion (4), is formed by syringe needle (1) infiltration.The anti-covering (2) that expands of infiltration is wrapped in syringe needle (1) outer wall.By syringe needle (1), the anti-needle body that expands covering (2), forms jointly of infiltration, be fixed on the needle stand (3), needle stand (3) is connected with tube for transfusion (4).
Syringe needle (1) by meet behind the water can deliquescing material make, this material has higher hardness under drying regime, can slight expansion deliquescing when meeting water, tension is anti-squeezes avirulence.[note: this material also is Adaptable polymer (adaptation polymer) Sea cucumbers inspire switchable material (Stichopus japonicus exciting switch material) as high intensity hydrogel or Stimuli-responsive polymernanocomposites (irritant reaction polymer nanocomposites), this material is that a kind of chance water has higher hardness before, meets the composite of water meeting deliquescing afterwards.Particulars is published in, the 63-67 page or leaf of the U.S. " Science " magazine 2008-03-07 phase e-magazine.]。
Because syringe needle (1) inwall outer wall is enclosed with the anti-bloated covering (2) of infiltration so after syringe needle runs into moisture, not only volumetric expansion can not take place, and internal diameter can not be out of shape yet, block.Be the swelling that prevents that needle point is too fast, can on needle point, be coated with nontoxic waterproof hardening agent.Syringe needle (1) is made into hollow cylindrical, also can be made into hollow triangular prism shaped, to improve the counter-bending ability of syringe needle.
The anti-covering (2) that expands of infiltration is will have infiltration function but the anti-expanding material of the infiltration that volume can not expand after running into water is wrapped on the syringe needle (1) and makes by physics or chemical means, and the anti-covering (2) that expands of infiltration can prevent effectively that syringe needle (1) from meeting the phenomenon generation that narrow diameter behind the water, obstruction are met in volumetric expansion and syringe needle (1) behind the water.
This utility model is wrapped in technology on the syringe needle (1) with the anti-covering (2) that expands of infiltration, and volume can expand the problem that can narrow down, block with internal diameter after effectively having controlled syringe needle (1) and running into water, so this utility model can be used for the thinner blood vessel of diameter.
Claims (3)
1. three layers of hollow venous detaining needle are made up of syringe needle, the anti-covering that expands of infiltration, needle stand, tube for transfusion, and it is characterized in that: the anti-covering that expands of infiltration is wrapped in the syringe needle outer wall, and the two common needle body of forming is fixed on the needle stand, and needle stand is connected with tube for transfusion.
2. a kind of hollow venous detaining needle according to claim 1, it is characterized in that: syringe needle be hollow cylinder or triangular prism shaped and by meet behind the water can deliquescing material make, this material has higher hardness under drying regime, the slight expansion deliquescing of meeting when meeting water, and tension is anti-squeezes.
3. a kind of hollow venous detaining needle according to claim 1 is characterized in that: the anti-covering employing of expanding of infiltration has the infiltration function but the anti-expanding material of the infiltration that volume can not expand after running into water is made.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009201762543U CN201481963U (en) | 2009-09-07 | 2009-09-07 | Cladding hollow vein indwelling needle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009201762543U CN201481963U (en) | 2009-09-07 | 2009-09-07 | Cladding hollow vein indwelling needle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201481963U true CN201481963U (en) | 2010-05-26 |
Family
ID=42420857
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009201762543U Expired - Fee Related CN201481963U (en) | 2009-09-07 | 2009-09-07 | Cladding hollow vein indwelling needle |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201481963U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107280691A (en) * | 2017-06-19 | 2017-10-24 | 马根昌 | Animal blood sampling bag |
-
2009
- 2009-09-07 CN CN2009201762543U patent/CN201481963U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107280691A (en) * | 2017-06-19 | 2017-10-24 | 马根昌 | Animal blood sampling bag |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20100526 Termination date: 20130907 |