CN203609712U - Long catheter structure for intravenous indwelling needle - Google Patents
Long catheter structure for intravenous indwelling needle Download PDFInfo
- Publication number
- CN203609712U CN203609712U CN201320731209.6U CN201320731209U CN203609712U CN 203609712 U CN203609712 U CN 203609712U CN 201320731209 U CN201320731209 U CN 201320731209U CN 203609712 U CN203609712 U CN 203609712U
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- Prior art keywords
- needle
- catheter
- long duct
- long
- seat
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- Expired - Lifetime
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- 238000001990 intravenous administration Methods 0.000 title abstract 3
- 238000001802 infusion Methods 0.000 claims abstract description 19
- 239000007788 liquid Substances 0.000 claims abstract description 12
- 239000003814 drug Substances 0.000 claims abstract description 4
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 10
- 239000000741 silica gel Substances 0.000 claims description 10
- 229910002027 silica gel Inorganic materials 0.000 claims description 10
- 208000007536 Thrombosis Diseases 0.000 abstract description 5
- 229920001296 polysiloxane Polymers 0.000 abstract 2
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 abstract 1
- 229910052710 silicon Inorganic materials 0.000 abstract 1
- 239000010703 silicon Substances 0.000 abstract 1
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 description 7
- 238000010586 diagram Methods 0.000 description 3
- 239000008280 blood Substances 0.000 description 2
- 210000004369 blood Anatomy 0.000 description 2
- 239000012530 fluid Substances 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
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000036772 blood pressure Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 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
- 210000003462 vein Anatomy 0.000 description 1
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- Infusion, Injection, And Reservoir Apparatuses (AREA)
Abstract
The utility model discloses a long catheter structure for an intravenous indwelling needle. The intravenous indwelling needle comprises a needle seat mechanism and an infusion connector assembly, wherein the needle seat mechanism comprises a three-way catheter seat, a catheter, a needle seat and a needle tube arranged on the needle seat, and the catheter is arranged at the front end of the three-way catheter seat; the needle tube penetrates the inside of the three-way catheter seat and is inserted into the catheter, and the needle seat is propped against the three-way catheter; especially, the three-way catheter seat is connected with the infusion connector assembly through a long catheter, and the long catheter is externally connected with a flow limiting clip for limiting the flow rate of liquid medicine in the long catheter; the long catheter is an expendable silicone tube with a plurality of inner cavities, and any inner cavity can be communicated with the orifices of the two ends of the expendable silicon tube. With the long catheter structure, the expendable silicone tube with a plurality of inner cavities is adopted, the inner cavities can be accommodated with stock liquid, and the long catheter and the catheter are always in a positive through-flow state by the stock liquid, so that the thrombus can be effectively prevented, and thus the risk of medical malpractice is reduced.
Description
Technical field
This utility model relates to a kind of long duct structure, relates in particular to a kind of long duct structure 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 long duct structure of venous detaining needle.
The purpose of this utility model, will be achieved by the following technical programs: a kind of long duct structure of venous detaining needle,
Described 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 connects the current limliting folder that is useful on the described long duct inner liquid medicine flow velocity of restriction outward, and described long duct is the inflatable silica gel tube with a plurality of inner chambers, and wherein inner chamber communicates with the inflatable silica gel tube two ends mouth of pipe arbitrarily.
Preferably, described inflatable silica gel tube has three inner chambers.
Preferably, described transfusion adapter assembly is needleless infusion joint.
The beneficial effects of the utility model are mainly reflected in: adopt the inflatable silica gel tube with a plurality of inner chambers, inner chamber can hold liquid storage, liquid storage can make long duct and conduit all the time in the through-flow state of malleation, has effectively prevented the formation of thrombosis, thereby has reduced the risk that causes malpractice.
Accompanying drawing explanation
Fig. 1 is that the long duct structure applications of a kind of venous detaining needle of utility model is in the overall structure schematic diagram of venous detaining needle.
Fig. 2 is the preferred structure schematic diagram of long duct in the long duct structure of a kind of venous detaining needle of utility model.
Fig. 3 is the cross section structure schematic diagram of Fig. 2.
The specific embodiment
This utility model provides a kind of long duct structure of venous detaining needle, as shown in Figure 1, a kind of long duct structure of venous detaining needle, venous detaining needle comprises 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, the port 22 of threeway catheter block 2 connects transfusion adapter assembly by a long duct 4, the outer current limliting folder 5 that is useful on restriction long duct 4 inner liquid medicine flow velocitys that connects of long duct 4, long duct 4 is for having the inflatable silica gel tube of a plurality of inner chambers 41, and wherein inner chamber communicates with the inflatable silica gel tube two ends mouth of pipe arbitrarily.
Wherein, as shown in Figure 2 to Figure 3; inflatable silica gel tube has three inner chambers 41; article three, the design of inner chamber has improved the liquid storage ability of long duct; can effectively extend the fluid time of medicinal liquid; extend the guard time to venous detaining needle simultaneously, and possessed mutual pressure between three inner chambers, made the through-flow state of malleation of long duct 4 and conduit 1 more stable.
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.
Below use principle and the process of the long duct structure 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, 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, make to enter into fast each inner chamber 41 of the normal saline compressing long duct 4 in long duct 4, and the inner chamber 41 of long duct 4 is expanded, and then liquid storage.Then, remove the defeated device 9 of note, the outer wall after inner chamber 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 (3)
1. a long duct structure for venous detaining needle,
Described 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 connects the current limliting folder that is useful on the described long duct inner liquid medicine flow velocity of restriction outward, and described long duct is the inflatable silica gel tube with a plurality of inner chambers, and wherein inner chamber communicates with the inflatable silica gel tube two ends mouth of pipe arbitrarily.
2. the long duct structure of venous detaining needle according to claim 1, is characterized in that: described inflatable silica gel tube has three inner chambers.
3. the long duct structure of venous detaining needle according to claim 1, is characterized in that: described transfusion adapter assembly is needleless infusion joint.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320731209.6U CN203609712U (en) | 2013-11-19 | 2013-11-19 | Long catheter structure for intravenous indwelling needle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320731209.6U CN203609712U (en) | 2013-11-19 | 2013-11-19 | Long catheter structure for intravenous indwelling needle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203609712U true CN203609712U (en) | 2014-05-28 |
Family
ID=50762399
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320731209.6U Expired - Lifetime CN203609712U (en) | 2013-11-19 | 2013-11-19 | Long catheter structure for intravenous indwelling needle |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203609712U (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104998323A (en) * | 2015-07-20 | 2015-10-28 | 北京伏尔特技术有限公司 | Novel continuous slow liquid feeding apparatus and installation and application method thereof |
| WO2016086832A1 (en) * | 2014-12-01 | 2016-06-09 | 邹卫平 | Indwelling needle having sustained release positive pressure |
| CN105664337A (en) * | 2016-04-15 | 2016-06-15 | 董鹏 | Punch-through catheter and expansion method thereof |
| CN105879151A (en) * | 2014-08-21 | 2016-08-24 | 陈艳玲 | Fixed handle storage seal liquid type non-backflow disposal vein remaining needle |
| CN112642018A (en) * | 2020-12-18 | 2021-04-13 | 河南科技大学第一附属医院 | Blood glucose detection device matched with venous indwelling needle and detection method thereof |
| WO2022048132A1 (en) * | 2020-09-02 | 2022-03-10 | 苏州林华医疗器械股份有限公司 | Continuous positive pressure maintaining needle |
-
2013
- 2013-11-19 CN CN201320731209.6U patent/CN203609712U/en not_active Expired - Lifetime
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105879151A (en) * | 2014-08-21 | 2016-08-24 | 陈艳玲 | Fixed handle storage seal liquid type non-backflow disposal vein remaining needle |
| WO2016086832A1 (en) * | 2014-12-01 | 2016-06-09 | 邹卫平 | Indwelling needle having sustained release positive pressure |
| CN104998323A (en) * | 2015-07-20 | 2015-10-28 | 北京伏尔特技术有限公司 | Novel continuous slow liquid feeding apparatus and installation and application method thereof |
| CN104998323B (en) * | 2015-07-20 | 2019-02-05 | 北京伏尔特技术有限公司 | It is a kind of to continue slow liquid dispensing apparatus and its installation method |
| CN105664337A (en) * | 2016-04-15 | 2016-06-15 | 董鹏 | Punch-through catheter and expansion method thereof |
| CN105664337B (en) * | 2016-04-15 | 2019-09-03 | 董鹏 | Break-through conduit and its expansion method |
| WO2022048132A1 (en) * | 2020-09-02 | 2022-03-10 | 苏州林华医疗器械股份有限公司 | Continuous positive pressure maintaining needle |
| CN112642018A (en) * | 2020-12-18 | 2021-04-13 | 河南科技大学第一附属医院 | Blood glucose detection device matched with venous indwelling needle and detection method thereof |
| CN112642018B (en) * | 2020-12-18 | 2023-05-23 | 河南科技大学第一附属医院 | Blood sugar detection device matched with venous indwelling needle and detection method thereof |
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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 | ||
| CX01 | Expiry of patent term |
Granted publication date: 20140528 |