CN205073412U - Venous indwelling needle - Google Patents
Venous indwelling needle Download PDFInfo
- Publication number
- CN205073412U CN205073412U CN201520690728.1U CN201520690728U CN205073412U CN 205073412 U CN205073412 U CN 205073412U CN 201520690728 U CN201520690728 U CN 201520690728U CN 205073412 U CN205073412 U CN 205073412U
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- China
- Prior art keywords
- needle
- bag body
- main bag
- cavity
- utricule
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Abstract
The utility model discloses a venous indwelling needle, include needle file, built -in elasticity bag, exert pressure and press piece and pjncture needle. The needle file includes trunk portion and formed at the side shoot portion of trunk portion, is formed with first cavity in the trunk portion, and the front end of trunk portion is equipped with a pipe, and the rear end of trunk portion has a pjncture needle interface, be formed with the second cavity that communicates with first cavity in the side shoot portion, and the free end of side shoot portion has a transfusion connector, the vice utricule that built -in elasticity bag is linked together including the main utricule in arranging first cavity in and in arranging the second cavity in and with main utricule, the front end of main utricule have one with the liquid outlet of pipe intercommunication, be equipped with in the liquid outlet one along going out the check valve that the liquid direction switched on, the free end of vice utricule is connected an infusion and is connected, exert pressure and set up on main utricule or vice utricule according to the piece for oppress main utricule or vice utricule and warp the intraductal normal pressure of applying of guide. The utility model discloses can realize preventing to keep somewhere pintle stopper scheduling problem, its simple structure, convenient operation prevents that the embolism effect is better.
Description
Technical field
This utility model relates to medical supplies, particularly relates to a kind of venous detaining needle.
Background technology
The application of venous detaining needle (veindetainedneedle) is the good method of clinical transfusion, can alleviate infant on the one hand because of scalp acupuncture the repeated localised puncture misery brought and the adult going for long-term infusion.Also the workload of clinical nurse is alleviated on the other hand.
But in use, the infusion connector after each infusion-completed pulls out action to venous detaining needle, must make to form certain negative pressure in remaining needle, blood backflow can be caused to enter in indwelling needle tubing, blood coagulation occurs, form embolus; Or blood flow more slowly or be retarded by silt, topical thrombin assemble, fibrin activity reduce, also can cause being partially formed embolus.When reusing, because of remaining needle channel blockage, need again to puncture, treatment can be affected and increase medical personnel's work; If moreover embolus intravasation, enter the different tissue of human body or organ with blood flow, cause the thromboembolism of this tissue or organ blood vessel, the serious ischemia, the necrosis that cause this organ, consequence is very serious and dangerous.
Utility model content
The purpose of this utility model is overcome deficiency of the prior art and provide a kind of venous detaining needle that can prevent thromboembolism.
The technical scheme that this utility model solution prior art problem adopts is: a kind of venous detaining needle, comprising:
Needle stand, described needle stand comprises stem portion and is formed at the side shoot portion of described stem portion, be formed with the first cavity, and the front end of described stem portion is provided with a conduit in described stem portion, and the rear end of described stem portion has a puncture needle interface; Be formed with the second cavity be communicated with described first cavity in described side shoot portion, and the free end in described side shoot portion has an infusion connector;
Built-in elastic capsule, described built-in elastic capsule comprises the main bag body that is placed in described first cavity and to be placed in described second cavity and the secondary utricule be connected with described main bag body; The front end of described main bag body has a liquid outlet be communicated with described conduit, is provided with one along the check valve of fluid direction conducting in described liquid outlet, and the free end of described secondary utricule connects an infusion connector being suitable for being connected with tube for transfusion;
Exert pressure by part, described in exert pressure and be arranged in described stem portion or side shoot portion by part, in order to oppress described main bag body or the distortion of secondary utricule applies normal pressure in described conduit;
Puncture needle, the front end of described puncture needle penetrates from described puncture needle interface and is passed by described conduit, and the rear end of described puncture needle is detachable is fixed on described puncture needle interface.
Preferably, described main bag body is cylindric, and cylindric described main bag body formed needle passageway along axis, described mistake in needle passageway was provided with needle shield, the described hardness crossing needle shield is greater than the hardness of described main bag body, and the periphery wall of described needle shield is excessively bonding with described main bag body, described puncture needle is arranged in described mistake in needle shield.
Preferably, the front end of described first cavity forms a step surface, and described step surface is provided with a sealing-plug, and the liquid outlet of described main bag body is communicated with described conduit through described sealing-plug.
Preferably, described main bag body or secondary utricule arrange a check valve, described check valve is constructed to be suitable for sucking extraneous gas when described main bag body or secondary utricule recover deformation.
Preferably, described main bag body or secondary utricule arrange the air-filtering membrane relative with described check valve, in order to filter the air sucked from described check valve.
Preferably, arrange a batching pig in described puncture needle interface, the rear of described batching pig arranges a plug be connected with described puncture needle interface thread.
Preferably, described puncture needle comprises needle holder and one end thereof and is fixedly installed in needle tubing in described needle holder, and described needle holder is detachable is connected to described plug, and described needle tubing is stretched out by described conduit through described plug and batching pig successively.
Preferably, described batching pig is arranged with sealing ring.
Preferably, the circumferential wall of the front end of described needle tubing is provided with blood back observation port.
The beneficial effects of the utility model are: the venous detaining needle provided according to this utility model, after liquid of being at every turn totally lost, can by exerting pressure by part extruding built-in elastic capsule, to make in built-in elastic capsule gas and or liquid conductive pipe in extruding, and then increase catheter interior pressure, avoid the blood backflow in conduit, thus the formation of anti-tampon, realize preventing the problems such as remaining needle thromboembolism.Its structure is simple, and easy to operate, anti-effect of embolization is better.
Accompanying drawing explanation
Fig. 1 is the decomposition texture schematic diagram of this utility model embodiment venous detaining needle;
Fig. 2 is this utility model embodiment venous detaining needle overall structure schematic diagram;
Fig. 3 is the structural representation of built-in elastic capsule in this utility model embodiment venous detaining needle.
Reference numeral:
Needle stand 10;
Stem portion 101;
Side shoot portion 102;
Conduit 11;
Sealing-plug 12;
Batching pig 13;
Plug 14;
Built-in elastic capsule 20;
Main bag body 201;
Secondary utricule 202;
Infusion connector 2021;
Cross needle passageway 203;
Cross needle shield 204;
Liquid outlet 205;
Exert pressure by part 30;
Puncture needle 40;
Needle holder 401;
Needle tubing 402;
Blood back observation port 4021.
The realization of this utility model object, functional characteristics and advantage will in conjunction with the embodiments, are described further with reference to accompanying drawing.
Detailed description of the invention
Be described below in detail embodiment of the present utility model, the example of described embodiment is shown in the drawings, and wherein same or similar label represents same or similar element or has element that is identical or similar functions from start to finish.Be exemplary below by the embodiment be described with reference to the drawings, be intended to for explaining this utility model, and can not be interpreted as restriction of the present utility model.
In description of the present utility model, it will be appreciated that, term " center ", " longitudinally ", " laterally ", " length ", " width ", " thickness ", " upper ", " under ", " front ", " after ", " left ", " right ", " vertically ", " level ", " top ", " end " " interior ", " outer ", " clockwise ", orientation or the position relationship of the instruction such as " counterclockwise " are based on orientation shown in the drawings or position relationship, only this utility model and simplified characterization for convenience of description, instead of indicate or imply that the device of indication or element must have specific orientation, with specific azimuth configuration and operation, therefore can not be interpreted as restriction of the present utility model.
In addition, term " first ", " second " only for describing object, and can not be interpreted as instruction or hint relative importance or imply the quantity indicating indicated technical characteristic.Thus, be limited with " first ", the feature of " second " can express or impliedly comprise one or more these features.In description of the present utility model, the implication of " multiple " is two or more, unless otherwise expressly limited specifically.
In this utility model, unless otherwise clearly defined and limited, the term such as term " installation ", " being connected ", " connection ", " fixing " should be interpreted broadly, and such as, can be fixedly connected with, also can be removably connect, or connect integratedly; Can be mechanical connection, also can be electrical connection; Can be directly be connected, also indirectly can be connected by intermediary, can be the connection of two element internals.For the ordinary skill in the art, the concrete meaning of above-mentioned term in this utility model can be understood as the case may be.
Shown in Fig. 3, this utility model embodiment provides a kind of venous detaining needle, comprises needle stand 10, built-in elastic capsule 20, exerts pressure by part 30 and puncture needle 40.
Specifically, needle stand 10 comprises stem portion 101 and is formed at the side shoot portion 102 of described stem portion 101, be formed with the first cavity in described stem portion 101, and the front end of described stem portion 101 is provided with a conduit 11, the rear end of described stem portion 101 has a puncture needle interface; Be formed with the second cavity be communicated with described first cavity in described side shoot portion 102, and the free end in described side shoot portion 102 has an infusion connector.
That is, needle stand 10 forms " Y " type structure by stem portion 101 with side shoot portion 102, and stem portion 101 is for installing puncture needle.And side shoot portion 102 is for connecting tube for transfusion, the medicinal liquid of access tube for transfusion.
Built-in elastic capsule 20 comprises the main bag body 201 that is placed in described first cavity and to be placed in described second cavity and the secondary utricule 202 be connected with described main bag body 201; The front end of described main bag body 201 has a liquid outlet 205 be communicated with described conduit 11, is provided with one along the check valve of fluid direction conducting in described liquid outlet 205, and the free end of described secondary utricule 202 connects an infusion connector 2021 being suitable for being connected with tube for transfusion.
That is, built-in elastic capsule 20 is arranged on needle stand 10 inside, and tube for transfusion inner liquid medicine can be inputed to secondary utricule 202 and main bag body 201 by input adapter, then is flowed in conduit 11 by the check valve of main bag body 201.
Exert pressure and be arranged in described stem portion 101 or side shoot portion 102 by part 30, be out of shape apply normal pressure in order to oppress described main bag body 201 or secondary utricule 202 in described conduit 11.
That is, exert pressure by part 30 for extruding built-in elastic capsule 20, force built-in elastic capsule 20 volume-diminished and increase inside and conduit 11 internal positive pressure power, after the pressure increase of conduit 11 and built-in elastic capsule 20, blood in human vas would not flow backward in conduit 11, and then avoid blood backflow to conduit 11, and condensation forms the problems such as thromboembolism in conduit 11.
The front end of puncture needle 40 penetrates from described puncture needle interface and is passed by described conduit 11, and the rear end of described puncture needle 40 is detachable is fixed on described puncture needle interface.
In concrete use procedure, needle tubing 402 and conduit 11 are together inserted in human vas, then extract puncture needle 40, infusion connector 2021 is connected to transfusion device input by tube for transfusion.After transfusion completes, pull out reservoir, and pressing is exerted pressure and forced the built-in elastic capsule 20 of needle stand 10 inside to compress by part 30, to make the normal pressure in built-in elastic capsule 20 and conduit 11 increase, so prevent endovascular blood backflow to conduit 11 and in conduit 11 problem such as formation thrombosis.
In an embodiment of the present utility model, main bag body 201 is cylindric, and cylindric described main bag body 201 formed needle passageway 203 along axis, described mistake in needle passageway 203 was provided with needle shield 204, the described hardness crossing needle shield 204 is greater than the hardness of described main bag body 201, and the periphery wall of described needle shield 204 is excessively bonding with described main bag body 201, described puncture needle 40 is arranged in described mistake in needle shield 204.
That is, the intermediate formation one of main bag body 201 crosses needle passageway 203, is not punctured pin 40 punctures to protect main bag body 201; therefore; pin protective sleeve was set in mistake needle passageway 203, so, when puncture needle 40 can be avoided encountering main bag body 201 through during main bag body 201.
It should be noted that, in the present embodiment, main bag body 201 adopts this structural design, puncture needle 40 can be realized can pass through, solving main bag body 201 may disturb puncture needle 40 to wear to the structural limitations problem in conduit 11, meanwhile, makes the internal structure of its entirety more simply compact.
In an embodiment of the present utility model, the front end of the first cavity forms a step surface, and described step surface is provided with a sealing-plug 12, and the liquid outlet 205 of described main bag body 201 is communicated with described conduit 11 through described sealing-plug 12.
That is, the liquid outlet 205 of main bag body 201 is connected with conduit 11, and seals by being formed between the first cavity in sealing-plug 12 and needle stand 10, the second cavity.So, can guarantee, in the first cavity that medicinal liquid can not leak out to needle stand 10 and the second cavity, to guarantee that sealing effectiveness is better.
In an embodiment of the present utility model, main bag body 201 or secondary utricule 202 arrange a check valve, described check valve is constructed to be suitable for sucking extraneous gas when described main bag body 201 or secondary utricule 202 recover deformation.
This check valve makes built-in elastic capsule 20 to return to original state for sucking extraneous air, so, meanwhile, also can ensure that inner elastomeric capsule increases internal pressure after can sucking air.In addition, because built-in elastic capsule 20 can restPose, therefore, after follow-up liquid of being at every turn totally lost can be made, this built-in elastic capsule 20 can both be utilized to compress and prevent blood backflow from causing the problem of thromboembolism.
More favorably, in a preferred embodiment of the present utility model, main bag body 201 or secondary utricule 202 arrange the air-filtering membrane relative with described check valve, in order to filter the air sucked from described check valve.
So, when built-in elastic capsule 20 recovers deformation, the extraneous air of check valve needs first to filter through air-filtering membrane, such as, antibacterial in filtered air, virus, dust particle etc., so, can guarantee that this venous detaining needle uses more safe and reliable.
In embodiments more of the present utility model, arrange a batching pig 13 in puncture needle interface, the rear of described batching pig 13 arranges a plug 14 be connected with described puncture needle interface thread.
So, the first cavity of needle stand 10 inside and the second cavity and external isolation can be made by the isolating seal of batching pig 13, improve the safety and reliability that this venous detaining needle uses further.
As preferably, batching pig 13 is arranged with sealing ring, so, isolating seal effect can be improved further.
Further, in a specific embodiment of the present utility model, puncture needle 40 comprises needle holder 401 and one end thereof and is fixedly installed in needle tubing 402 in described needle holder 401, described needle holder 401 is detachable is connected to described plug 14, and described needle tubing 402 is stretched out by described conduit 11 through described plug 14 and batching pig 13 successively.
So, the installation being convenient to puncture needle 40 is fixed, and, is also convenient to after puncture completes meanwhile, can extract puncture needle 40 smoothly.
In an embodiment of the present utility model, the circumferential wall of the front end of needle tubing 402 is provided with blood back observation port 4021.So, when puncturing, if endovascular blood is back in needle tubing 402, medical worker can be observed by blood back observation port 4021, is beneficial to medical worker and is confirmed whether blood back quickly, and then judges it is all correctly insert blood vessel.
In sum, according to the venous detaining needle that this utility model provides, after liquid of being at every turn totally lost, built-in elastic capsule 20 can be extruded by part 30 by exerting pressure, to make in built-in elastic capsule 20 gas and or liquid conductive pipe 11 in extruding, and then increase conduit 11 internal pressure, avoid the blood backflow in conduit 11, thus the formation of anti-tampon, realize preventing the problems such as remaining needle thromboembolism.Its structure is simple, and easy to operate, anti-effect of embolization is better.
In the description of this description, specific features, structure, material or feature that the description of reference term " embodiment ", " some embodiments ", " example ", " concrete example " or " some examples " etc. means to describe in conjunction with this embodiment or example are contained at least one embodiment of the present utility model or example.In this manual, identical embodiment or example are not necessarily referred to the schematic representation of above-mentioned term.And the specific features of description, structure, material or feature can combine in an appropriate manner in any one or more embodiment or example.
Although illustrate and described embodiment of the present utility model above, be understandable that, above-described embodiment is exemplary, can not be interpreted as restriction of the present utility model, those of ordinary skill in the art can change above-described embodiment when not departing from principle of the present utility model and aim, revising, replacing and modification in scope of the present utility model.
Claims (9)
1. a venous detaining needle, is characterized in that, comprising:
Needle stand, described needle stand comprises stem portion and is formed at the side shoot portion of described stem portion, be formed with the first cavity, and the front end of described stem portion is provided with a conduit in described stem portion, and the rear end of described stem portion has a puncture needle interface; Be formed with the second cavity be communicated with described first cavity in described side shoot portion, and the free end in described side shoot portion has an infusion connector;
Built-in elastic capsule, described built-in elastic capsule comprises the main bag body that is placed in described first cavity and to be placed in described second cavity and the secondary utricule be connected with described main bag body; The front end of described main bag body has a liquid outlet be communicated with described conduit, is provided with one along the check valve of fluid direction conducting in described liquid outlet, and the free end of described secondary utricule connects an infusion connector being suitable for being connected with tube for transfusion;
Exert pressure by part, described in exert pressure and be arranged in described stem portion or side shoot portion by part, in order to oppress described main bag body or the distortion of secondary utricule applies normal pressure in described conduit;
Puncture needle, the front end of described puncture needle penetrates from described puncture needle interface and is passed by described conduit, and the rear end of described puncture needle is detachable is fixed on described puncture needle interface.
2. venous detaining needle according to claim 1, it is characterized in that, described main bag body is cylindric, and cylindric described main bag body formed needle passageway along axis, described mistake in needle passageway was provided with needle shield, the hardness of described needle shield is excessively greater than the hardness of described main bag body, and the periphery wall of described needle shield is excessively bonding with described main bag body, and described puncture needle is arranged in described mistake in needle shield.
3. venous detaining needle according to claim 2, is characterized in that, the front end of described first cavity forms a step surface, and described step surface is provided with a sealing-plug, and the liquid outlet of described main bag body is communicated with described conduit through described sealing-plug.
4. venous detaining needle according to claim 1, is characterized in that, described main bag body or secondary utricule arrange a check valve, and described check valve is constructed to be suitable for sucking extraneous gas when described main bag body or secondary utricule recover deformation.
5. venous detaining needle according to claim 4, is characterized in that, described main bag body or secondary utricule arrange the air-filtering membrane relative with described check valve, in order to filter the air sucked from described check valve.
6. venous detaining needle according to claim 1, is characterized in that, arranges a batching pig in described puncture needle interface, and the rear of described batching pig arranges a plug be connected with described puncture needle interface thread.
7. venous detaining needle according to claim 6, it is characterized in that, described puncture needle comprises needle holder and one end thereof and is fixedly installed in needle tubing in described needle holder, described needle holder is detachable is connected to described plug, and described needle tubing is stretched out by described conduit through described plug and batching pig successively.
8. venous detaining needle according to claim 6, is characterized in that, described batching pig is arranged with sealing ring.
9. venous detaining needle according to claim 7, is characterized in that, the circumferential wall of the front end of described needle tubing is provided with blood back observation port.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520690728.1U CN205073412U (en) | 2015-09-08 | 2015-09-08 | Venous indwelling needle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520690728.1U CN205073412U (en) | 2015-09-08 | 2015-09-08 | Venous indwelling needle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205073412U true CN205073412U (en) | 2016-03-09 |
Family
ID=55425859
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520690728.1U Expired - Fee Related CN205073412U (en) | 2015-09-08 | 2015-09-08 | Venous indwelling needle |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205073412U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107485757A (en) * | 2017-08-16 | 2017-12-19 | 裴泽军 | Novel remaining needle |
| CN107929873A (en) * | 2017-12-11 | 2018-04-20 | 天津和力芹科技有限公司 | A kind of venous detaining needle |
| CN109646762A (en) * | 2019-01-15 | 2019-04-19 | 苏州林华医疗器械股份有限公司 | Fluting needle tubing and intravenous infusion indwelling needle |
-
2015
- 2015-09-08 CN CN201520690728.1U patent/CN205073412U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107485757A (en) * | 2017-08-16 | 2017-12-19 | 裴泽军 | Novel remaining needle |
| CN107929873A (en) * | 2017-12-11 | 2018-04-20 | 天津和力芹科技有限公司 | A kind of venous detaining needle |
| CN109646762A (en) * | 2019-01-15 | 2019-04-19 | 苏州林华医疗器械股份有限公司 | Fluting needle tubing and intravenous infusion indwelling needle |
| CN109646762B (en) * | 2019-01-15 | 2024-04-05 | 苏州林华医疗器械股份有限公司 | Grooved needle tube and intravenous infusion remaining needle |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160309 Termination date: 20170908 |
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| CF01 | Termination of patent right due to non-payment of annual fee |