CN203370153U - Anti-reflux venous indwelling needle - Google Patents
Anti-reflux venous indwelling needle Download PDFInfo
- Publication number
- CN203370153U CN203370153U CN201320447043.5U CN201320447043U CN203370153U CN 203370153 U CN203370153 U CN 203370153U CN 201320447043 U CN201320447043 U CN 201320447043U CN 203370153 U CN203370153 U CN 203370153U
- Authority
- CN
- China
- Prior art keywords
- needle
- plemum
- venous indwelling
- indwelling needle
- reflux
- 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 - Fee Related
Links
Images
Landscapes
- Infusion, Injection, And Reservoir Apparatuses (AREA)
Abstract
The utility model discloses an anti-reflux venous indwelling needle which comprises a needle base, a catheter and a puncture needle core, wherein a transfusion cavity is formed in the needle base, the catheter is arranged at the front end of the needle base and communicated with the transfusion cavity, the puncture needle core axially penetrates through the needle base and the catheter, the needle base is further provided with a medical isolation plug for closing the transfusion cavity, and the volume of the transfusion cavity is not more than 0.02ml. According to the anti-reflux venous indwelling needle and a use method of the anti-reflux venous indwelling needle, when transfusion is stopped temporarily, because the medical isolation plug has elasticity, the medical isolation plug can automatically close a pore passage penetrated by a transfusion needle when the needle is retreated, backflow of medicine liquid of the transfusion cavity and the catheter is effectively blocked, and the anti-reflux effect is achieved; meanwhile, the volume of the transfusion cavity and the volume of the catheter are extremely small, so blood backflow caused by venous pressure fluctuation of a human body can be effectively reduced. The anti-reflux venous indwelling needle is simple in structure, low in material consumption and easy to produce.
Description
Technical field
This utility model relates to a kind ofly inputs the medical equipment in human body by medium, relates in particular to a kind of remaining needle that is used to patient infusion.
Background technology
The invention of venous detaining needle and application alleviate patient's misery and improve quality of medical care, have also reduced the labor intensity of medical personnel for patient infusion.But existing venous detaining needle must carry out tube sealing when suspending transfusion, within every 6-8 hours, carries out No. one time washing pipe, otherwise form thrombosis, result in blockage and produce vasculitis; While re-starting transfusion, need again to carry out siphunculus.The operation of tube sealing, washing pipe and siphunculus has increased patient's financial burden and medical personnel's workload, also likely make in the thrombosis intravasation of formation and cause other diseases, the anticoagulation medicines such as the heparin sodium that tube sealing, washing pipe and siphunculus are used, urokinase also may bring side effect to human body.
Recent domestic is for solving the problems of the technologies described above, there is the Anti-reflux venous indwelling needle technology, the utility model patent that is CN201257220Y as publication number discloses a kind of Anti-reflux venous indwelling needle, comprise needle tubing, conduit, nook closing member, needle stand, catheter block, blood back device, catheter block is installed with valve block, the rear end of valve block is close to the inner chamber of catheter block, the mass axis of two flat of conduit and valve block is in same position, the valve block front end is strip, and the valve block rear end is that circular configuration tightly adheres to the catheter block inner chamber.Above-mentioned reverse flow resistant indwelling needle complex structure, consumptive material is many, high to technological requirement, cost is expensive.In addition, this reverse flow resistant indwelling needle is due to the sealing effectiveness deficiency of valve block, and the situation of blood back flow also occurs often.
The utility model content
The technical problems to be solved in the utility model is to provide the Anti-reflux venous indwelling needle that a kind of cost is low, counterflow-preventing is effective.
This utility model solves the technical scheme that its technical problem adopts:
A kind of Anti-reflux venous indwelling needle, in comprising, be provided with transfusing chamber needle stand, be arranged on needle stand front end and the conduit be communicated with described transfusing chamber and axially through the puncture nook closing member of described needle stand and conduit, described needle stand also is provided with the medical batching pig of the described transfusing chamber of sealing, and the volume of described transfusing chamber is not more than 0.02ml.
Also comprise the plemum that adjacent described transfusing chamber arranges in described needle stand, described transfusing chamber and described plemum are separated by described medical batching pig; Described medical batching pig is provided with seepage channel, and for when there are pressure differential in described plemum and transfusing chamber, the liquid in described plemum can flow into described transfusing chamber through described seepage channel automatic slowly.
Described seepage channel is filtering material, porous media or the compositions of the two be embedded in described medical batching pig, and the both ends of the surface of described filtering material, porous media or the compositions of the two contact with described plemum and transfusing chamber respectively.
Described filtering material, porous media or the compositions of the two depart from described medical batching pig center.
Described seepage channel is for embedding the hydrophilic fibers line of described medical batching pig, and the two ends of described hydrophilic fibers line are communicated with respectively described plemum and transfusing chamber.
Preferably, the volume of described plemum is greater than the volume sum of described transfusing chamber and conduit.
Preferably, the volume of described plemum is 0.02ml-0.3ml.
The open rearward end of described needle stand plemum is used the sealing of sealing batching pig.
The open rearward end of described needle stand plemum adopts the sealing cap sealing of easy disassembly.
Described sealing cap is calparine cap.
Compared with prior art, Anti-reflux venous indwelling needle of the present utility model and using method thereof have following useful technique effect; Anti-reflux venous indwelling needle of the present utility model and using method thereof are when suspending transfusion, because described medical batching pig itself has elastic reaction, can effectively intercept transfusing chamber and conduit medicinal liquid and reflux in the withdraw of the needle duct that the self-closed transfusion needle passed through simultaneously, realize the counterflow-preventing effect; Simultaneously, because the volume of transfusing chamber and conduit is minimum, can effectively reduce the blood backflow that human vein presses fluctuation to cause; This utility model is simple in structure in addition, consumptive material is few, be easy to production.
The accompanying drawing explanation
The structural representation of the Anti-reflux venous indwelling needle that Fig. 1 is this utility model embodiment 1;
The schematic diagram be used in conjunction with transfusion device of the Anti-reflux venous indwelling needle that Fig. 2 is this utility model embodiment 1;
The transfusion schematic diagram of the Anti-reflux venous indwelling needle that Fig. 3 is this utility model embodiment 1;
The structural representation of the Anti-reflux venous indwelling needle that Fig. 4 is this utility model embodiment 2;
The structural representation of the another kind of lumen openings sealing of the Anti-reflux venous indwelling needle that Fig. 5 is this utility model embodiment 2 mode;
The schematic diagram be used in conjunction with transfusion device of the Anti-reflux venous indwelling needle that Fig. 6 is this utility model embodiment 2;
The transfusion schematic diagram of the Anti-reflux venous indwelling needle that Fig. 7 is this utility model embodiment 2;
The schematic diagram of the Anti-reflux venous indwelling needle tube sealing operating procedure I that Fig. 8 is this utility model embodiment 2;
The schematic diagram of the Anti-reflux venous indwelling needle tube sealing operating procedure II that Fig. 9 is this utility model embodiment 2;
The schematic diagram of the Anti-reflux venous indwelling needle tube sealing operating procedure III that Figure 10 is this utility model embodiment 2.
The specific embodiment
Below in conjunction with the drawings and specific embodiments, this utility model is described further.
The medical encapsulant of mentioning in this utility model description and claims has clear and definite definition, refer to there is definite shape, the elastomeric material of size, sealing for pharmaceutical containers such as glass, plastics, require harmful soluble substance such as not leaded, hydrargyrum, arsenic, barium, but inoperative with the powder charge agent, material itself can not have ejecta; Syringe needle can pierce through this medical encapsulant and enter in container, can be in the withdraw of the needle duct that the self-closed transfusion needle passed through simultaneously; Medical encapsulant can be selected rubber, silica gel elastomeric material.
The medical batching pig of mentioning in this utility model description and claims refers to the resilient plug that uses medical encapsulant to make, for isolation, the sealing of remaining needle.
embodiment 1:
The Anti-reflux venous indwelling needle 10 of this utility model embodiment 1 as shown in Figure 1, in comprising, be provided with transfusing chamber 41 needle stand 3, be arranged on needle stand 3 front ends and the conduit 2 be communicated with described transfusing chamber 41 and axially through the puncture nook closing member 1 of described needle stand 3 and conduit 2, described needle stand 3 also is provided with the medical batching pig 5 of the described transfusing chamber 41 of sealing, and the volume of described transfusing chamber 41 is not more than 0.02ml.
Refer to Fig. 2, the Anti-reflux venous indwelling needle 10 of this utility model embodiment 1 has coordinated transfusion and tube sealing work with existing transfusion device 9, and described transfusion device 9 comprises transfusion needle 91, actuator 92, tube for transfusion 93 and dropper 94.
During transfusion, as shown in Figure 3, the transfusion needle 91 of transfusion device 9 inserts described transfusing chamber 41 by the described transfusing chamber 41 of infusion of medicine through described medical batching pig 5.
After transfusion finishes, need to carry out tube sealing to the Anti-reflux venous indwelling needle 10 of this utility model embodiment 1 according to conventional remaining needle tube sealing method, because described medical batching pig 5 itself has elastic reaction, can be in the withdraw of the needle duct that the self-closed transfusion needle passed through simultaneously, effectively intercept transfusing chamber and conduit medicinal liquid and reflux, realize the counterflow-preventing effect.After tube sealing finishes, because the volume of transfusing chamber 41 and conduit 2 is minimum, can effectively reduce the blood backflow that human vein presses fluctuation to cause.
embodiment 2:
The Anti-reflux venous indwelling needle of this utility model embodiment 2 is the improvement to embodiment 1, has increased the structure of automatic pipe sealing preventing thrombosis on the basis of the Anti-reflux venous indwelling needle of embodiment 1.
The Anti-reflux venous indwelling needle 10 of this utility model embodiment 2 as shown in Figure 4, comprise puncture nook closing member 1, needle stand 3 and be arranged on the conduit 2 of described needle stand 3 front ends, described needle stand 3 is provided with inner chamber 4, described inner chamber 4 openings are used medical batching pig 7 sealings, be plugged with medical batching pig 5 in inner chamber 4, this medical batching pig 5 cuts off described inner chamber 4 for the transfusing chamber 41 of described conduit 2 connections and the plemum 42 of adjacent described transfusing chamber 41, and described puncture nook closing member 1 can insert described conduit 2 through described medical batching pig 5.Be provided with in medical batching pig 5 and can be communicated with described transfusing chamber 41 and described plemum 42 seepage channels 6.
, except using medical batching pig 7 sealings, also there are other sealing modes in the opening of described inner chamber 4: refer to Fig. 5, described inner chamber 4 openings can be realized sealing by sealing cap 8 is installed, and this sealing cap 8 preferably adopts the widely used calparine cap of prior art.
The parts understandable, that described medical batching pig 5 can also adopt other medical encapsulants to make, only need to realize described transfusing chamber 41 and the function that plemum 42 cuts off are got final product.
Preferably, the volume of described plemum 42 is greater than the volume sum of described transfusing chamber 41 and conduit 2.
Described seepage channel 6 is for implanting the hydrophilic fibers line of described medical batching pig 5, and the two ends of this hydrophilic fibers line are communicated with respectively described plemum 42 and transfusing chamber 41.
Described seepage channel 6 can also be to be embedded in described medical batching pig 5 and both ends of the surface are exposed to respectively filtering material, porous media or the compositions of the two of described plemum 42 and transfusing chamber 41.
Described filtering material includes but not limited to one or more in following material: semipermeable membrane, nanofiltration material and ultrafiltration material.
Described porous media includes but not limited to one or more in following material: macromolecule polyporous materials, ceramic-like porous material, carbon foam, metal foam and natural porous media.
Refer to Fig. 6, the Anti-reflux venous indwelling needle 10 of this utility model embodiment 2 has coordinated transfusion and tube sealing work with existing transfusion device 9, and described transfusion device 9 comprises transfusion needle 91, actuator 92, tube for transfusion 93 and dropper 94.
During transfusion, as shown in Figure 7, the transfusion needle 91 of transfusion device 9 inserts described transfusing chamber 41 by the described transfusing chamber 41 of infusion of medicine through described medical batching pig 5.
Preferably, described seepage channel 6 departs from medical batching pig 5 centers, to prevent puncture needle core 1 or transfusion needle 91, damages seepage channel 6 while passing.
After transfusion finishes, need to carry out tube sealing to the Anti-reflux venous indwelling needle 10 of this utility model embodiment 2.The tube sealing operation refers to Fig. 8 to Figure 10, comprises the following steps:
I. part extracts that transfusion needle 91 to the infusion hole of described transfusion needle 91 front ends has left medical batching pig 5 but still in plemum 42, as shown in Figure 8;
II. roll the roller of actuator 92 of transfusion device 9 to closed condition, the medicinal liquids in tube for transfusion 93 are pushed by roller, flow into plemum 42 through the infusion hole of described transfusion needle 91 front ends, thereby make the pressure in described plemum 42 be greater than transfusing chamber 41, as shown in Figure 9;
. all extract described transfusion needle 91, owing between described plemum 42 and transfusing chamber 41, having pressure differential, the medicinal liquid in described plemum 42 flows into described transfusing chamber 41 through seepage channel 6 automatic slowlies, as shown in figure 10.
Owing to plemum 42, injecting medicinal liquid, make the air of plemum 42 inside be compressed, the pressure of plemum 42 is greater than the pressure of transfusing chamber 41; Liquid in described plemum 42 slowly flows into transfusing chamber 41 by described seepage channel 6, and the blood in inflow catheter 2 and/or transfusing chamber 41 is discharged, and realizes tube sealing; Along with the pressure reduction between plemum 42 and transfusing chamber 41 reduces, percolation flow velocity also can slow down thereupon, makes described plemum 42 can maintain for a long time malleation, even washing pipe, siphunculus can not infused again yet.
In Step II, arbitrarily roll described actuator 92 roller or adopt other modes to push tube for transfusion 93, all medicinal liquid can be inputted to plemum 42 and make plemum 42 produce malleations; But this can make the volume of the medicinal liquid of inputting plemum 42 uncertain, effect not identical, automatic pipe sealing is unstable for the malleation that causes the rear plemum 42 of each operation to produce.
Through overtesting, when the volume of described plemum 42 is 0.02ml-0.3ml, use transfusion device 9 can produce applicable malleation after plemum 42 injects medicinal liquid.When the volume of described transfusing chamber 41 is not more than 0.02ml, can effectively reduce the blood backflow that human vein presses fluctuation to cause, reach the effect of good counterflow-preventing.
Understandable, only need to inject medicinal liquid to described plemum 42 and make plemum 42 pressure be greater than transfusing chamber 41, can complete above-mentioned tube sealing work, also can adopt other syringes to inject medicinal liquid.The medicinal liquid that injects plemum 42 can be the medicine be used for the treatment of, and can be also the anticoagulation medicines such as heparin sodium, urokinase, can be even also normal saline.
Above-described embodiment is this utility model preferred implementation, and all its principles are identical with the present embodiment or approximate with basic structure, all within this utility model protection domain.
Claims (9)
1. an Anti-reflux venous indwelling needle, in comprising, be provided with transfusing chamber (41) needle stand (3), be arranged on needle stand (3) front end and the conduit (2) be communicated with described transfusing chamber (41) and axially through the puncture nook closing member (1) of described needle stand (3) and conduit (2), it is characterized in that: described needle stand (3) also is provided with the medical batching pig (5) of the described transfusing chamber of sealing (41), and the volume of described transfusing chamber (41) is not more than 0.02ml.
2. Anti-reflux venous indwelling needle according to claim 1, it is characterized in that: also comprise the plemum (42) that adjacent described transfusing chamber (41) arranges in described needle stand (3), described transfusing chamber (41) and described plemum (42) are separated by described medical batching pig (5);
Described medical batching pig (5) is provided with seepage channel (6), for when described plemum (42) and transfusing chamber (41) while having pressure differential, the interior liquid of described plemum (42) can flow into described transfusing chamber (41) through described seepage channel (6) automatic slowly.
3. Anti-reflux venous indwelling needle according to claim 2, it is characterized in that: described seepage channel (6) departs from described medical batching pig (5) center.
4. Anti-reflux venous indwelling needle according to claim 2, it is characterized in that: described seepage channel (6) is for embedding the hydrophilic fibers line of described medical batching pig (5), and the two ends of described hydrophilic fibers line are communicated with respectively described plemum (42) and transfusing chamber (41).
5. Anti-reflux venous indwelling needle according to claim 2, it is characterized in that: the volume of described plemum (42) is greater than the volume sum of described transfusing chamber (41) and conduit (2).
6. Anti-reflux venous indwelling needle according to claim 2, it is characterized in that: the volume of described plemum (42) is 0.02ml-0.3ml.
7. according to the described Anti-reflux venous indwelling needle of claim 1 to 6 any one, it is characterized in that: the open rearward end of described needle stand (3) plemum (42) is used sealing batching pig (7) sealing.
8. according to the described Anti-reflux venous indwelling needle of claim 1 to 6 any one, it is characterized in that: the open rearward end of described needle stand (3) plemum (42) adopts sealing cap (8) sealing of easy disassembly.
9. Anti-reflux venous indwelling needle according to claim 8, it is characterized in that: described sealing cap (8) is calparine cap.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320447043.5U CN203370153U (en) | 2013-07-25 | 2013-07-25 | Anti-reflux venous indwelling needle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320447043.5U CN203370153U (en) | 2013-07-25 | 2013-07-25 | Anti-reflux venous indwelling needle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203370153U true CN203370153U (en) | 2014-01-01 |
Family
ID=49832711
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320447043.5U Expired - Fee Related CN203370153U (en) | 2013-07-25 | 2013-07-25 | Anti-reflux venous indwelling needle |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203370153U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2015010222A1 (en) * | 2013-07-25 | 2015-01-29 | Xie Shigeng | Self-sealing anti-thrombotic venous indwelling needle and use method thereof |
| CN108635666A (en) * | 2018-07-17 | 2018-10-12 | 锦州诺德医疗器械科技有限公司 | A kind of calparine cap |
| CN108815630A (en) * | 2018-06-28 | 2018-11-16 | 圣光医用制品股份有限公司 | Lower resistance batching pig and lower resistance venous detaining needle |
-
2013
- 2013-07-25 CN CN201320447043.5U patent/CN203370153U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2015010222A1 (en) * | 2013-07-25 | 2015-01-29 | Xie Shigeng | Self-sealing anti-thrombotic venous indwelling needle and use method thereof |
| CN108815630A (en) * | 2018-06-28 | 2018-11-16 | 圣光医用制品股份有限公司 | Lower resistance batching pig and lower resistance venous detaining needle |
| CN108635666A (en) * | 2018-07-17 | 2018-10-12 | 锦州诺德医疗器械科技有限公司 | A kind of calparine cap |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103330970B (en) | Automatically-sealed thrombus-prevented venous indwelling needle and use method thereof | |
| CN204766829U (en) | Device in blood vessel, opening pipe and female rule accessory | |
| KR20030029610A (en) | Medical valve with positive flow characteristics | |
| CN114699599B (en) | Indwelling needle with slow-release positive pressure device | |
| CN104399144A (en) | Remaining needle with slow release positive pressure | |
| CN203370153U (en) | Anti-reflux venous indwelling needle | |
| CN104043162A (en) | Thrombus preventing venous indwelling needle and thrombus preventing method thereof | |
| CN203370152U (en) | Self-sealing thrombus prevention venous indwelling needle | |
| CN204275171U (en) | A kind of remaining needle with slow release malleation | |
| CN100551453C (en) | Remain-type infusion device | |
| CN105251081A (en) | Positive pressure cavity type remaining needle and method of preventing thrombi through positive pressure cavity type remaining needle | |
| CN203001687U (en) | Perfusion connector of disposable indwelling catheter | |
| CN203556057U (en) | Junction valve capable of preventing blood return | |
| CN205127008U (en) | Needle is kept somewhere to malleation cavate | |
| CN201271413Y (en) | Metering cylinder stop valve and infusion cover with the same | |
| CN104606739A (en) | Anti-thrombotic safety cap for venous indwelling needle and using method thereof | |
| CN204637265U (en) | A kind of ophthalmologic operation syringe pump extension tube | |
| CN201179271Y (en) | One-way positive pressure valve | |
| CN204411414U (en) | The anti-blood of a kind of venous detaining needle fastens safety head | |
| CN204543117U (en) | A kind of self-sealing venous detaining needle | |
| CN106039466A (en) | Multiple-time positive pressure thrombus preventing venous indwelling needle and thrombus preventing method thereof | |
| CN102178988A (en) | Disposable safety transfusion device | |
| CN202128777U (en) | Disposable safety transfusion device | |
| CN220327739U (en) | Hemodialysis pipeline venous kettle dosing assembly | |
| CN103495257B (en) | Medical drainage tube capable of avoiding iatrogenic contamination |
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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140101 Termination date: 20160725 |