CN203609713U - Continuous positive-pressure venous indwelling needle - Google Patents
Continuous positive-pressure venous indwelling needle Download PDFInfo
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- CN203609713U CN203609713U CN201320731303.1U CN201320731303U CN203609713U CN 203609713 U CN203609713 U CN 203609713U CN 201320731303 U CN201320731303 U CN 201320731303U CN 203609713 U CN203609713 U CN 203609713U
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- Prior art keywords
- needle
- continuous positive
- long duct
- catheter
- current limliting
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Abstract
The utility model discloses a continuous positive-pressure venous indwelling needle, which comprises a catheter component, a needle tube component and an infusion joint component, wherein the catheter component comprises a three-way catheter seat and a catheter; the needle tube component comprises a needle seat and a needle tube; the infusion joint component is a needle-less infusion joint; the three-way catheter seat is connected with the needle-less infusion joint through a long catheter; a flow limiting clamp for limiting the flow velocity of liquid medicine in the long catheter is connected outside the long catheter in a matched way; a pressure liquid storage part is arranged on the long catheter; when the liquid medicine is arranged in the pressure liquid storage part, the long catheter and the catheter are in a positive-pressure flow passing state all the time under the action of a pressure source of the pressure liquid storage part. The continuous positive-pressure venous indwelling needle has the prominent effects that the long catheter and the catheter are in the positive-pressure flow passing state all the time under the action of the pressure liquid storage part of the long catheter, so that the formation of thrombus is effectively prevented, and the risks of medical accidents are greatly lowered.
Description
Technical field
This utility model belongs to the defeated instrument field of note, relates in particular to one and can effectively prevent thrombotic venous detaining needle.
Background technology
The use of venous detaining needle can reduce patient because of cause painful of venipuncture repeatedly and to the fear of having an injection, alleviate family members' impatience, be convenient to clinical application, suddenly, the rescue medication of critical patient, alleviate nurse's workload, reduce patient's pain, thereby venous detaining needle is in wide clinical application.
A kind of venous detaining needle is disclosed in Chinese patent CN202822325U, as shown in Figure 1, comprise conduit tube component, needle tubing assembly and transfusion adapter assembly, described conduit tube component comprises threeway catheter block 2 and is connected to the conduit 1 of the first opening 21 front ends of described threeway catheter block 2.Described needle tubing assembly comprises the needle stand 3 outside the 3rd opening 23 that is set in described threeway catheter block 2 and is connected to the needle tubing (not shown) on needle stand 3, and described needle tubing is inserted in the inside of described conduit 1 and threeway catheter block 2.The second opening 22 of described threeway catheter block 2 connects described transfusion adapter assembly, and described transfusion adapter assembly comprises long duct 4, flow-stopping clip 5 ', infusion joint 6, calparine cap 7, end cap 8 etc.; The second opening 22 of described threeway catheter block 2 connects described long duct 4, on described long duct 4, is furnished with flow-stopping clip 5 ', and the other end of described long duct 4 is connected to described infusion joint 6; One side of described infusion joint 6 is provided with calparine cap 7, and opposite side is connected with an end cap 8; Note defeated device and can be inserted into the infusion that carries out normal saline in described calparine cap 7.
Existing venous detaining needle in use, need to make described flow-stopping clip 5 ' in open mode, coordinates calparine cap 7 or end cap 8 to infuse by noting defeated device; When after infusion-completed, seal a side of infusion joint 6 by end cap 8, and opposite side pushes the normal saline in the defeated device of this note by the defeated device of note being connected on calparine cap 7, in order to wash away the inner chamber of described venous detaining needle; After washing away, apply external force and flow-stopping clip 5 ' is closed close, the boss 51 of described flow-stopping clip 5 ' clamps long duct 4 and makes long duct 4 in disconnection state.And can make like this with the conduit of sick body contact position in negative pressure state, blood can be back in conduit 1, long thromboblast precipitation and then the promotion thrombosis of can shining of time one, likely can cause venous detaining needle to stop up, or also may upper while once infusing thrombosis can enter in sick body with medicinal liquid, cause unnecessary malpractice.
Utility model content
In view of the defect that above-mentioned prior art exists, the purpose of this utility model is to propose a kind of continuous positive pressure venous detaining needle, makes interior can the continuing in barotropic state of conduit of venous detaining needle, the formation of anti-tampon.
The purpose of this utility model will be achieved by the following technical programs:
A kind of continuous positive pressure venous detaining needle, comprising: conduit tube component, needle tubing assembly and transfusion adapter assembly, and described conduit tube component comprises threeway catheter block and is arranged on the conduit of described threeway catheter block front end; Described needle tubing assembly comprises needle stand and is installed in the needle tubing on described needle stand, and described needle tubing is inserted in the inside of described conduit and threeway catheter block; Described transfusion adapter assembly is needleless infusion joint; Described threeway catheter block connects described needleless infusion joint by a long duct, and described long duct connects the current limliting folder that is useful on the described long duct inner liquid medicine flow velocity of restriction outward; Described long duct is provided with pressure liquid storage part, and in the time being provided with medicinal liquid in described pressure liquid storage part, the pressure source of described pressure liquid storage part makes long duct and conduit all the time in the through-flow state of malleation.
Preferably, described long duct is inflatable soft tube, and the dilation of described inflatable soft tube is pressure liquid storage part.
Preferably, the pressure source of described inflatable soft tube is the retraction outer wall after described dilation expands.
Preferably, described long duct is the inflatable silica gel tube of an integration.Or described long duct is the silica gel tube at least with two-stage structure, wherein at least one section is inflatable silica gel tube.
Preferably, described current limliting folder is for not exclusively sealing folder.
Preferably, described current limliting fixture is useful on the boss that described long duct is clamped to current limliting, and described boss is provided with the groove for medicinal liquid can slowly be passed through, and the reeded boss of described tool forms the incomplete enclosed construction of described incomplete sealing folder.
Preferably, described current limliting folder is electrodeless or has extremely adjustable current limliting folder.
Preferably, described current limliting folder comprises at least two grabs.
Outstanding effect of the present utility model is: the pressure liquid storage part of described long duct makes long duct and conduit all the time in the through-flow state of malleation, has effectively prevented the formation of thrombosis, thereby greatly reduces the risk that causes malpractice.
Below just accompanying drawing in conjunction with the embodiments, is described in further detail the specific embodiment of the present utility model, so that technical solutions of the utility model are easier to understand, grasp.
Accompanying drawing explanation
Fig. 1 is the structural representation of the venous detaining needle of prior art;
Fig. 2 is the part-structure schematic diagram of the preferred embodiment of this utility model continuous positive pressure venous detaining needle, and now current limliting is pressed from both sides in open mode;
Fig. 3 is the part-structure schematic diagram of the preferred embodiment of this utility model continuous positive pressure venous detaining needle, and now current limliting is pressed from both sides in closing the state of closing, and notes defeated device and be inserted into infusion normal saline in needleless infusion joint;
Fig. 4 is the structural representation of the second embodiment of the long duct of this utility model continuous positive pressure venous detaining needle.
Fig. 5 is the structural representation of the second embodiment of the current limliting folder of this utility model continuous positive pressure venous detaining needle.
The specific embodiment
This utility model has disclosed a kind of continuous positive pressure venous detaining needle, as shown in Figure 2, same as the prior art, comprises conduit tube component, needle tubing assembly.Described conduit tube component comprises threeway catheter block 2 and is connected to the conduit 1 of the first opening 21 front ends of described threeway catheter block 2.Described needle tubing assembly comprises the needle stand 3 outside the 3rd opening 23 that is set in described threeway catheter block 2 and is connected to the needle tubing 31 on needle stand 3, and described needle tubing 31 is inserted in the inside of described conduit 1 and threeway catheter block 2.
In this utility model, the second opening 22 of described threeway catheter block 2 connects described transfusion adapter assembly by a long duct 4, described transfusion adapter assembly is needleless infusion joint 10, notes defeated device 9 and can be inserted into the infusion that carries out normal saline in described needleless infusion joint 10.Described needleless infusion joint 10 is an one-way valve structures, all has announcement in Chinese patent ZL201220270229.3 and ZL201320048046.1, does not therefore repeat them here.In the time that the defeated device 9 of note carries out the infusion of normal saline, the infusion direction of normal saline only allows from noting defeated device 9 toward long duct 4 directions.
Shown in Fig. 2 and Fig. 3, described long duct 4 is provided with pressure liquid storage part, and described long duct 4 is inflatable soft tube, and the dilation 41 of described inflatable soft tube is pressure liquid storage part.The pressure source of described inflatable soft tube is the retraction outer wall after described dilation 41 expands.
The inflatable soft tube of an integration that described long duct 4 can disclose for Fig. 3, the inflatable soft tube at least with two-stage structure that also can disclose for Fig. 4, wherein at least one section is inflatable soft tube, an i.e. conduct wherein segment structure is the inflatable soft tube with dilation 41, and another segment structure is the common soft tube that does not possess expansion structure.In this utility model, silica gel tube is as the respond well soft tube of dilatancy as first-selection, and certainly, the silica gel tube in this utility model also can be with the expandable tubular replacement of other soft materials.As shown in Figure 4, described long duct 4 comprises two segment expandable silica gel tubes.Certainly, two sections of above inflatable silica gel tubes are also within protection domain of the present utility model.
The outer current limliting folder 5 that is useful on the described long duct 4 inner liquid medicine flow velocitys of restriction that connects of described long duct 4.Described current limliting folder 5 is that not exclusively sealing is pressed from both sides, described current limliting folder 5 boss 51 that have for described long duct 4 being clamped to current limliting, described boss 51 is provided with the groove 52 for medicinal liquid can slowly be passed through, described in there is groove 52 boss 51 form the incomplete enclosed construction of described incomplete sealing folder.The effect of current limliting in this utility model folder is: can play metering function when it closes after closing, and note and when defeated device 9 pushes normal saline, limitedly seal one end of long duct 4 and the dilation 41 of this long duct 4 is expanded and then liquid storage.All belong to replacement scheme of the present utility model as long as therefore can reach well the current limliting folder of these effects.
When continuous positive pressure venous detaining needle of the present utility model in use, as shown in Figure 2, first described current limliting folder 5 is placed in to open mode, coordinate needleless infusion joint 10 or end cap 8 one sides to infuse by noting defeated device; When after infusion-completed, use end cap 8 seals a side of infusion joint 6, and opposite side pushes the normal saline in the defeated device of this note by noting defeated device 9, in order to wash away the inner chamber of described venous detaining needle; As shown in Figure 3, after washing away, applying external force closes current limliting folder 5 to close, and then once use the defeated device 9 of note to pass through needleless infusion joint 10 to the interior propelling movement normal saline of long duct 4, and now, due to the metering function of current limliting folder 5 and the check valve effect of needleless infusion joint 10, the normal saline that makes to enter into fast in long duct 4 is oppressed described long duct 4, and the dilation 41 of long duct 4 is expanded, and then liquid storage.Then, remove the defeated device 9 of note, the outer wall after described dilation 41 expands can produce pressure to the normal saline in it in the process of retraction, and then makes long duct 4 and conduit 1 all the time in the through-flow state of malleation under the cooperation of current limliting folder 5.Like this, just can effectively prevent blood backflow, and well limit the generation of thrombosis.
Preferably, current limliting folder 5 of the present utility model can be electrodeless or have extremely adjustable current limliting folder.As shown in Figure 5, described current limliting folder 5 comprises at least two grabs 53.Each grab 53 makes current limliting folder 5 close the clamping force difference of closing rear clamping long duct 4, and then can have the regulation and control of polar region to long duct 4 inner liquid medicine flow velocitys.And same, adopt existing transfusion device speed regulator to press from both sides as current limliting, can relatively carry out the regulation and control of medicinal liquid flow velocity without polar region.
This utility model still has numerous embodiments, and the pressure source of for example described inflatable soft tube also can be for being connected in the external pressure source of described dilation; Or needleless infusion joint 10 needn't arrange the note infusion channel of end cap 8 one sides.All employing equivalents or equivalent transformation and all technical schemes of forming, within all dropping on protection domain of the present utility model.
Claims (9)
1. a continuous positive pressure venous detaining needle, comprising:
Conduit tube component, needle tubing assembly and transfusion adapter assembly,
Described conduit tube component comprises threeway catheter block (2) and is arranged on the conduit (1) of described threeway catheter block (2) front end;
Described needle tubing assembly comprises needle stand (3) and is installed in the needle tubing (31) on described needle stand (3), and described needle tubing (31) is inserted in the inside of described conduit (1) and threeway catheter block (2);
It is characterized in that:
Described transfusion adapter assembly is needleless infusion joint (10);
Described threeway catheter block (2) connects described needleless infusion joint (10) by a long duct (4), and the outer current limliting folder (5) that is useful on restriction described long duct (4) inner liquid medicine flow velocity that connects of described long duct (4);
Described long duct (4) is provided with pressure liquid storage part, and in the time being provided with medicinal liquid in described pressure liquid storage part, the pressure source of described pressure liquid storage part makes long duct (4) and conduit (1) all the time in the through-flow state of malleation.
2. continuous positive pressure venous detaining needle according to claim 1, is characterized in that: described long duct (4) is inflatable soft tube, and the dilation (41) of described inflatable soft tube is pressure liquid storage part.
3. continuous positive pressure venous detaining needle according to claim 2, is characterized in that: the pressure source of described inflatable soft tube is the retraction outer wall after described dilation (41) expands.
4. according to the continuous positive pressure venous detaining needle described in claim 1 or 2 or 3, it is characterized in that: described long duct (4) is the inflatable silica gel tube of an integration.
5. according to the continuous positive pressure venous detaining needle described in claim 1 or 2 or 3, it is characterized in that: described long duct (4) is at least having the silica gel tube of two-stage structure, and wherein at least one section is inflatable silica gel tube.
6. according to the continuous positive pressure venous detaining needle described in claim 1 or 2 or 3, it is characterized in that: described current limliting folder (5) is for not exclusively sealing folder.
7. continuous positive pressure venous detaining needle according to claim 6, it is characterized in that: described current limliting folder (5) has the boss (51) for described long duct (4) being clamped to current limliting, described boss (51) is provided with the groove (52) for medicinal liquid can slowly be passed through, described in there are groove (52) boss (51) form the incomplete enclosed construction of described incomplete sealing folder.
8. continuous positive pressure venous detaining needle according to claim 6, is characterized in that: described current limliting folder (5) is electrodeless or has extremely adjustable current limliting folder.
9. continuous positive pressure venous detaining needle according to claim 8, is characterized in that: described current limliting folder (5) comprises at least two grabs (53).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320731303.1U CN203609713U (en) | 2013-11-19 | 2013-11-19 | Continuous positive-pressure venous indwelling needle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320731303.1U CN203609713U (en) | 2013-11-19 | 2013-11-19 | Continuous positive-pressure venous indwelling needle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203609713U true CN203609713U (en) | 2014-05-28 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320731303.1U Withdrawn - After Issue CN203609713U (en) | 2013-11-19 | 2013-11-19 | Continuous positive-pressure venous indwelling needle |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203609713U (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103599580A (en) * | 2013-11-19 | 2014-02-26 | 苏州林华医疗器械有限公司 | Continuous positive pressure venous indwelling needle |
| WO2016086833A1 (en) * | 2014-12-01 | 2016-06-09 | 邹卫平 | Indwelling needle sustained release positive pressure apparatus |
| CN105879151A (en) * | 2014-08-21 | 2016-08-24 | 陈艳玲 | Fixed handle storage seal liquid type non-backflow disposal vein remaining needle |
| CN106552301A (en) * | 2015-09-24 | 2017-04-05 | 邹卫平 | A kind of slow release positive pressure devices and its remaining needle |
| CN108837224A (en) * | 2018-07-16 | 2018-11-20 | 杭州光启医疗科技发展有限公司 | The medical fluid delivery instrument of anti-backflow |
-
2013
- 2013-11-19 CN CN201320731303.1U patent/CN203609713U/en not_active Withdrawn - After Issue
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103599580A (en) * | 2013-11-19 | 2014-02-26 | 苏州林华医疗器械有限公司 | Continuous positive pressure venous indwelling needle |
| CN103599580B (en) * | 2013-11-19 | 2016-03-02 | 苏州林华医疗器械有限公司 | Continuous positive pressure venous detaining needle |
| CN105879151A (en) * | 2014-08-21 | 2016-08-24 | 陈艳玲 | Fixed handle storage seal liquid type non-backflow disposal vein remaining needle |
| WO2016086833A1 (en) * | 2014-12-01 | 2016-06-09 | 邹卫平 | Indwelling needle sustained release positive pressure apparatus |
| CN106552301A (en) * | 2015-09-24 | 2017-04-05 | 邹卫平 | A kind of slow release positive pressure devices and its remaining needle |
| CN108837224A (en) * | 2018-07-16 | 2018-11-20 | 杭州光启医疗科技发展有限公司 | The medical fluid delivery instrument of anti-backflow |
| CN108837224B (en) * | 2018-07-16 | 2021-02-02 | 青岛市精神卫生中心（青岛市第七人民医院、青岛市心理咨询中心） | Liquid medicine delivery device capable of preventing backflow |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20140528 Effective date of abandoning: 20160302 |
|
| C25 | Abandonment of patent right or utility model to avoid double patenting |