CN203724552U - Vein indwelling needle - Google Patents
Vein indwelling needle Download PDFInfo
- Publication number
- CN203724552U CN203724552U CN201320730977.XU CN201320730977U CN203724552U CN 203724552 U CN203724552 U CN 203724552U CN 201320730977 U CN201320730977 U CN 201320730977U CN 203724552 U CN203724552 U CN 203724552U
- Authority
- CN
- China
- Prior art keywords
- catheter
- needle
- current limliting
- holder
- boss
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
- 210000003462 vein Anatomy 0.000 title abstract description 3
- 238000001802 infusion Methods 0.000 claims description 17
- 239000007788 liquid Substances 0.000 claims description 16
- 239000003814 drug Substances 0.000 claims description 8
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical group O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 3
- 230000010354 integration Effects 0.000 claims description 3
- 239000000741 silica gel Substances 0.000 claims description 3
- 229910002027 silica gel Inorganic materials 0.000 claims description 3
- 208000007536 Thrombosis Diseases 0.000 abstract description 5
- 230000015572 biosynthetic process Effects 0.000 abstract description 2
- 239000003978 infusion fluid Substances 0.000 abstract 5
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 description 7
- 230000010339 dilation Effects 0.000 description 4
- 239000008280 blood Substances 0.000 description 2
- 210000004369 blood Anatomy 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000005406 washing Methods 0.000 description 2
- 206010049976 Impatience Diseases 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000036772 blood pressure Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 229940079593 drug Drugs 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 238000001990 intravenous administration Methods 0.000 description 1
- 238000001556 precipitation Methods 0.000 description 1
- 229940127558 rescue medication Drugs 0.000 description 1
- 210000001792 thromboblast Anatomy 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
Landscapes
- Infusion, Injection, And Reservoir Apparatuses (AREA)
Abstract
The utility model discloses a vein indwelling needle, which comprises a needle holder mechanism and an infusion solution joint assembly. The needle holder mechanism comprises a three-way catheter holder, a catheter, a needle holder and a needle tube arranged on the needle holder. The catheter is arranged at the front end of the three-way catheter holder. The needle tube is configured to pass through the interior of the three-way catheter holder to be inserted onto the catheter. The needle holder is configured to abut against the three-way catheter holder. In particular, the three-way catheter holder is connected with the infusion solution joint assembly through a long catheter. The long catheter is in the form of an integrally expansible hose. The outside of the expansible hose is provided with an adjustable flow-limiting clip mechanism used for controlling the flow of the infusion solution inside the long catheter. According to the technical scheme of the utility model, due to the adoption of a flow-limiting clip with multi-stage bosses, the clamping state of each stage can be adjusted as required, so that the infusion solution inside the long catheter and the infusion solution inside the catheter are enabled to effectively communicate with each other. By means of a pressure reservoir portion in the long catheter, the through-flow state at a positive pressure between the long catheter and the catheter is enabled all the time. Therefore, the formation of thromboses is prevented, and the risk of induced medical accidents is also lowered.
Description
Technical field
This utility model relates to a kind of venous detaining needle, belongs to technical field of medical instruments.
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.
In Chinese patent CN202822325U, disclose a kind of venous detaining needle, comprised conduit tube component, needle tubing assembly and transfusion adapter assembly, conduit tube component comprises threeway catheter block and is connected to the conduit of the first open front of threeway catheter block.Needle tubing assembly comprises the needle stand outside the 3rd opening that is set in threeway catheter block and is connected to the needle tubing on needle stand, and needle tubing is inserted in the inside of conduit and threeway catheter block.The second opening of threeway catheter block connects transfusion adapter assembly, and transfusion adapter assembly comprises long duct, flow-stopping clip, infusion joint, calparine cap, end cap etc.; The second opening of threeway catheter block connects long duct, is furnished with flow-stopping clip on long duct, and the other end of long duct is connected to infusion joint; One side of infusion joint is provided with calparine cap, and opposite side is connected with an end cap; Note defeated device and can be inserted into the infusion that carries out normal saline in calparine cap.Venous detaining needle in use, need to make flow-stopping clip in open mode, coordinates calparine cap or end cap to infuse by noting defeated device; When after infusion-completed, by a side of end caps infusion joint, 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, in order to wash away the inner chamber of described venous detaining needle; After washing away, apply external force fluid stopping clamping is closed, the boss of flow-stopping clip clamps long duct and makes long duct in disconnection state.
Venous detaining needle of the prior art, pull away at the note Cheng Houhui that is totally lost, because human vein possesses certain blood pressure, can be in negative pressure state in conduit, blood can be back to conduit, time one is long can and then promote thrombosis according to thromboblast precipitation, or also may upper while once infusing thrombosis can enter in sick body with medicinal liquid, cause unnecessary malpractice.
Utility model content
The purpose of this utility model is to solve above-mentioned technical problem, proposes a kind of Novel intravenous catheter.
The purpose of this utility model, will be achieved by the following technical programs: a kind of venous detaining needle, comprise needle stand mechanism and transfusion adapter assembly,
Described needle stand mechanism comprises threeway catheter block, conduit, needle stand and is arranged at the needle tubing of needle stand, and described conduit is arranged at threeway catheter block front end, and described needle tubing is inner and be inserted in conduit through threeway catheter block, and described needle stand and threeway catheter block connect;
Especially, described threeway catheter block connects described transfusion adapter assembly by a long duct, described long duct is an integration inflatable hose, and the outside of described inflatable hose is provided with the adjustable current limliting clamp mechanism that can control described long duct inner liquid medicine circulation.
Preferably, described adjustable current limliting clamp mechanism is to be provided with at least current limliting folder of two-stage boss, the standby clamping state corresponding with boss at different levels of described current limliting fixture, and wherein, under at least one clamping state, described long duct inner liquid medicine is in limited through-flow state.
Preferably, described adjustable current limliting clamp mechanism is the current limliting folder that is provided with three grades of boss, described current limliting fixture standby with three grades of three kinds of clamping states that boss is corresponding.
Preferably, described transfusion adapter assembly is needleless infusion joint.
Preferably, described inflatable hose is silica gel tube.
The beneficial effects of the utility model are mainly reflected in: adopt the current limliting folder with multistage boss, can regulate as required clamping states at different levels that long duct and conduit inner liquid medicine can effectively be circulated, long duct internal pressure liquid storage part makes long duct and conduit all the time in the through-flow state of malleation, effectively prevent the formation of thrombosis, thereby reduced the risk that causes malpractice.
Brief description of the drawings
Fig. 1 is the overall structure schematic diagram of a kind of venous detaining needle of utility model.
Fig. 2 is the structural representation that in a kind of venous detaining needle of utility model, preferably current limliting is pressed from both sides.
Detailed description of the invention
This utility model provides a kind of venous detaining needle, as shown in Figure 1, a kind of venous detaining needle, comprise needle stand mechanism and transfusion adapter assembly, needle stand mechanism comprises threeway catheter block 2, conduit 1, needle stand 3 and is arranged at the needle tubing 31 of needle stand 3, conduit 1 is arranged at the front port 21 of threeway catheter block 2, and needle tubing 31 is through threeway catheter block 2 inside and be inserted in conduit 1, and needle stand 3 connects with the port 23 of threeway catheter block; Especially, threeway catheter block 2 connects transfusion adapter assembly by a long duct 4, long duct 4 is an integration inflatable hose, inflatable hose possesses dilation 41, dilation 41 expands and then liquid storage, and the outside of inflatable hose is provided with the adjustable current limliting clamp mechanism that can control long duct 4 inner liquid medicine circulatioies.
Wherein, adjustable current limliting clamp mechanism is to be provided with at least current limliting folder 5 of two-stage boss 53, and current limliting folder 5 possesses the clamping state corresponding with boss at different levels, and wherein, under at least one clamping state, long duct 5 inner liquid medicines are in limited through-flow state.As shown in Figure 2, adjustable current limliting clamp mechanism is the current limliting folder 5 that is provided with three grades of boss, current limliting folder 5 possesses and three grades of three kinds of clamping states that boss is corresponding, three kinds of clamping states can meet adjusting long duct 5 inner liquid medicine velocities of liquid assets, regulate according to demand, the boss that wherein first order is high velocity of liquid assets, the second level be in the boss of low velocity of liquid assets, the third level is low velocity of liquid assets boss or closed boss.
In addition, transfusion adapter assembly is needleless infusion joint 10, note defeated device 9 and can be inserted into the infusion that carries out normal saline in needleless infusion joint 10, needleless infusion joint 10 is an one-way valve structures, the side joint of needleless infusion joint is provided with end cap 8, needleless infusion joint 10 belongs to prior art, admittedly do not repeat them here.
Finally, inflatable hose is silica gel tube.
Below use principle and the process of this utility model venous detaining needle:
First current limliting folder 5 is placed in to open mode, coordinates needleless infusion joint 10 to infuse by noting defeated device 9; When after infusion-completed, use end cap 8 seals a side of needleless infusion joint 10, and opposite side pushes the normal saline in the defeated device 9 of this note by noting defeated device 9, in order to wash away the inner chamber of venous detaining needle; After washing away, apply external force make current limliting folder 5 on demand the boss of rank close and 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, make to enter into fast the normal saline compressing long duct 4 in 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 dilation expands can produce pressure to the normal saline in it in the process of retraction, and then makes long duct 4 conduits 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.
This utility model still has numerous embodiments, and all employing equivalents or equivalent transformation and all technical schemes of forming, within all dropping on protection domain of the present utility model.
Claims (4)
1. a venous detaining needle, comprises needle stand mechanism and transfusion adapter assembly,
Described needle stand mechanism comprises threeway catheter block, conduit, needle stand and is arranged at the needle tubing of needle stand, and described conduit is arranged at threeway catheter block front end, and described needle tubing is inner and be inserted in conduit through threeway catheter block, and described needle stand and threeway catheter block connect;
It is characterized in that: described threeway catheter block connects described transfusion adapter assembly by a long duct, described long duct is an integration inflatable hose, the outside of described inflatable hose is provided with the adjustable current limliting clamp mechanism that can control described long duct inner liquid medicine circulation, described adjustable current limliting clamp mechanism is to be provided with at least current limliting folder of two-stage boss, the standby clamping state corresponding with boss at different levels of described current limliting fixture, wherein, under at least one clamping state described long duct inner liquid medicine in limited through-flow state.
2. venous detaining needle according to claim 1, is characterized in that: described adjustable current limliting clamp mechanism is the current limliting folder that is provided with three grades of boss, described current limliting fixture standby with three grades of three kinds of clamping states that boss is corresponding.
3. venous detaining needle according to claim 1, is characterized in that: described transfusion adapter assembly is needleless infusion joint.
4. venous detaining needle according to claim 1, is characterized in that: described inflatable hose is silica gel tube.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320730977.XU CN203724552U (en) | 2013-11-19 | 2013-11-19 | Vein indwelling needle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320730977.XU CN203724552U (en) | 2013-11-19 | 2013-11-19 | Vein indwelling needle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203724552U true CN203724552U (en) | 2014-07-23 |
Family
ID=51194659
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320730977.XU Expired - Lifetime CN203724552U (en) | 2013-11-19 | 2013-11-19 | Vein indwelling needle |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203724552U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110841138A (en) * | 2019-11-06 | 2020-02-28 | 北京伏尔特技术有限公司 | an indwelling needle |
-
2013
- 2013-11-19 CN CN201320730977.XU patent/CN203724552U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110841138A (en) * | 2019-11-06 | 2020-02-28 | 北京伏尔特技术有限公司 | an indwelling needle |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 215101 No. 3, new road, Suzhou Industrial Park, Jiangsu, China Patentee after: SUZHOU LINHWA MEDICAL DEVICES CO.,LTD. Address before: 215101 No. 3, new road, Suzhou Industrial Park, Jiangsu, China Patentee before: SUZHOU LINHUA MEDICAL DEVICE CO.,LTD. |
|
| CX01 | Expiry of patent term |
Granted publication date: 20140723 |
|
| CX01 | Expiry of patent term |