CN105056341A - Remaining needle capable of providing positive pressure continuously and application method thereof - Google Patents
Remaining needle capable of providing positive pressure continuously and application method thereof Download PDFInfo
- Publication number
- CN105056341A CN105056341A CN201510519539.2A CN201510519539A CN105056341A CN 105056341 A CN105056341 A CN 105056341A CN 201510519539 A CN201510519539 A CN 201510519539A CN 105056341 A CN105056341 A CN 105056341A
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- China
- Prior art keywords
- flexible pipe
- roller
- base
- remaining needle
- positive pressure
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Abstract
The invention relates to a remaining needle capable of providing positive pressure continuously. The remaining needle comprises a transfusion joint, an extension flexible pipe, a puncture needle, a puncture needle base and a catheter assembly, the transfusion joint is connected with a catheter base through the extension flexible pipe, the extension flexible pipe is provided with a positive pressure device, the positive pressure device comprises a base and a rolling wheel, a transfusion groove is formed between the base and the rolling wheel, the extension flexible pipe passes through the transfusion groove, guide rails are arranged at the two sides inside the base of the positive pressure device, two or more pairs of rolling wheel location devices are arranged on the guide rails at the two sides, and the cross section of the inlet end of the transfusion groove is larger than that of the outlet end of the transfusion groove; as for the base and the rolling wheel, when the rolling wheel is pushed to the outlet end of the base, the gap between the bottom of the rolling wheel and the base takes up 70%-80% of the double wall-thickness of the extension flexible pipe; the extension flexible pipe is made of high molecular materials which are high in elasticity, and the wall thickness of the extension flexible pipe ranges from 0.35 mm to 0.45 mm. By means of the remaining needle, embolism in the catheter can be avoided, the catheter sealing effect is good, the operation is convenient and fast, and the retention time is effectively prolonged; in addition, it is facilitated to judge the catheter blocking condition.
Description
[technical field]
The present invention relates to technical field of medical instruments, when being specifically related to a kind of indwelling, can continuous positive pressure be provided, without the need to tube sealing, avoid remaining needle and the using method thereof of catheter blockage.
[background technology]
Existing venoclysis needle is easy piercing blood vessel in infusion process, must change at every turn.The invention of venous detaining needle and application overcome these shortcomings, need nook closing member to extract out during use after completing venipuncture, only leave sleeve pipe, so can not injured blood vessel, can stay Ink vessel transfusing continuously with several days.Meanwhile, the use of venous detaining needle can also reduce patient because of venipuncture repeatedly and the misery caused, and alleviate the workload of nurse simultaneously, be convenient to clinical application, thus venous detaining needle is used widely clinically.
Existing venous detaining needle, in its extension tube, all cover has flow-stopping clip.During normal infusion, flow-stopping clip is in open mode, coordinates calparine cap or end cap to infuse by noting defeated device; When needs suspend transfusion, apply external force and fluid stopping clamping is closed, extension tube clamps and makes extension tube be in disconnection state by the boss in flow-stopping clip.The mode that this kind suspends transfusion be direct clamping mode rapidly, usual flow-stopping clip is semi-steel plastic material manufacture, due to the elastic reaction of plastics while directly clamping, make with the conduit of sick body contact position in produce negative pressure, thus cause the conduit be retained in human body to produce blood back, this blood back produces blood coagulation in inlying catheter at known causing, form the immediate cause of thrombosis or blocking, these blood coagulation bolts are hidden in inlying catheter end, be hidden in us and opaque Ink vessel transfusing, naked eyes cannot directly be observed and relatively hidden, affect follow-up transfusion, even if pressurization is washed open, thrombosis also may block blood capillary, even cause vasculitis, cause unnecessary malpractice.
Plugging is caused in order to avoid blood backflow to pin, adopt slowly injection positive pressure tube sealing method or malleation fluid stopping device positive pressure tube sealing, but existing malleation fluid stopping apparatus structure is complicated, expensive, and malleation effect is of short duration, in the indwelling time of more than ten hour, blood also can slowly infiltrate in remaining needle, may form thrombosis, this situation be avoided in indwelling time, can only to supplement heparin again, and supplementary heparin can form extra charge burden.
[summary of the invention]
The present invention is to solve the problem, there is provided a kind of simple to operate, blood back problem during simultaneously solving indwelling, not only while possessing malleation performance but possess avoid indwelling during because of blood back, and cause blood coagulation, blocking, thus shorten the technical problem of indwelling time, design a kind of novel structure, the remaining needle of continuous positive pressure can be provided in indwelling time.
To achieve these goals, design a kind of sustainable remaining needle that malleation is provided, comprise infusion connector, extend flexible pipe, puncture needle, Paracentesis needle holder and conduit tube component, infusion connector is by extending hose connection catheter block, described prolongation flexible pipe is provided with positive pressure devices, described positive pressure devices comprises base and roller, transfusion groove is provided with between base and roller, extend flexible pipe through this transfusion groove, described positive pressure devices chassis interior both sides are provided with guide rail, two side rails are at least provided with two pair roller positioners, described transfusion groove entrance point cross-sectional area is greater than transfusion groove port of export cross-sectional area, described base and roller, when roller is pushed into pan outlet end, now the gap of idler wheel bottom and base is extend flexible pipe twice wall thickness 70% ~ 80%, described prolongation flexible pipe is made by having elastomeric macromolecular material, and wall thickness is 0.35mm ~ 0.45mm.
Two described side rails are at least provided with two pair roller positioners to can be replaced two side rails and be provided with at least three pair roller retaining muscle, described roller retaining muscle lays respectively near transfusion groove entrance point place, in the middle part of transfusion groove port of export place and guide rail.
A circular shaft structure is had above described pan outlet end, circular shaft is provided with a hasp, for preventing roller rollback, have the barb that two places extend below the front end of hasp, when on buckle cap, barb will be buckled in the guide rail of base, hasp have two through holes, two described through holes are the locating hole of roller, and this two places locating hole is positioned at the position of roller first time location and second time location, prevents roller rollback.
Described prolongation flexible pipe one end connects infusion connector and calparine cap, extend the flexible pipe other end and connect piercing portions, piercing portions comprises catheter block, Paracentesis needle holder and sheath, isolation room is provided with in described catheter block, isolation room is by inlying catheter connecting puncture needle, and sheath is set in puncture needle and the outside also one end of inlying catheter is fixed on catheter block.
Described base bottom is provided with arcuate structure.
Described guide rail and the parallel placement of prolongation flexible pipe.
Described transfusion groove entrance point cross-sectional width is greater than cross-sectional width in the middle part of cavity.
Described positioner is retaining muscle or snap ring or hasp or latch.
Described positioner, near entrance point, for preventing roller from exiting base, near the port of export, for preventing the rollback of roller in indwelling process, avoids producing blood back for a pair for a pair.
The using method of the remaining needle of continuous positive pressure is provided, comprises the following steps: 1, during stopping infusion, roller is pushed into pan outlet end, stop medicinal liquid backflow; 2, use 1ml syringe, extract 0.5ml normal saline; 3,0.5ml normal saline is expelled in remaining needle by calparine cap, keeps syringe core rod not rollback, extract syringe rapidly; 4, now extend flexible pipe to be stressed expansion, owing to extending the high resiliency of flexible pipe, hydraulic pressure is produced in the prolongation flexible pipe of infusion connector one end, this hydraulic pressure can make the prolongation flexible pipe of roller and base gap location produce gap, the normal saline before injected slowly can flow to inlying catheter by this gap, stop blood backflow in indwelling flexible pipe, avoid blood to solidify in inlying catheter, block.
The present invention compared with the existing technology, its advantage is: after transfusion completes, by injecting a small amount of normal saline, formed in prolongation flexible pipe and inlying catheter and continue forward flow, when avoiding transfusion next time, blood remains in conduit and forms thromboembolism, and tube sealing is effective, simple operation, effectively extend indwelling time; In addition when again infusing, pushing back roller and can form blood back, be conducive to judging plugging situation.In addition, hasp structure also effectively can prevent roller-coaster, accurately locates, and ensures patient safety.
[accompanying drawing explanation]
Fig. 1 is the apparatus structure schematic diagram of the embodiment of the present invention 1;
Fig. 2 is the concrete structure schematic diagram of the positive pressure devices of the embodiment of the present invention 1;
Fig. 3 is the top view of the roller of positive pressure devices in the device of the embodiment of the present invention 1;
Fig. 4 is view when positive pressure devices is opened in the embodiment of the present invention 1;
Fig. 5 is view when positive pressure devices closes in the embodiment of the present invention 1;
Fig. 6 is the device continuous positive pressure process schematic of the embodiment of the present invention 1;
Fig. 7 is the concrete structure schematic diagram of positive pressure devices in the embodiment of the present invention 2;
View when Fig. 8 is first time malleation in the embodiment of the present invention 2;
View when Fig. 9 is second time malleation in the embodiment of the present invention 2;
Figure 10 is the concrete structure schematic diagram of positive pressure devices in the embodiment of the present invention 3;
Figure 11 is view when positive pressure devices is opened in the embodiment of the present invention 3;
View when Figure 12 is positive pressure devices first time malleation in the embodiment of the present invention 3;
View when Figure 13 is positive pressure devices second time malleation in the embodiment of the present invention 3;
Figure 14 is the front view of hasp in the embodiment of the present invention 3;
Figure 15 is the side view of hasp in the embodiment of the present invention 3;
Figure 16 is the top view of hasp in the embodiment of the present invention 3;
In figure: 1. sheath 2. inlying catheter 3. extends flexible pipe 4. catheter block 5. batching pig 6. puncture needle 7. Paracentesis needle holder 8. positive pressure devices 9. calparine cap 10. fungi-proofing block 11. infusion connector 12. retaining muscle 13. roller 14. positioning bar 15. hasp 16. circular shaft 151. through hole 152. barb;
Fig. 1 is specified to be Figure of abstract of the present invention.
[detailed description of the invention]
Below in conjunction with accompanying drawing, the invention will be further described, and the structure of this device and principle are very clearly concerning the people of this specialty.Should be appreciated that specific embodiment described herein only in order to explain the present invention, be not intended to limit the present invention.
Embodiment 1
As shown in Figure 1, comprise infusion connector for the remaining needle in the pusher positive pressure devices of extruding of remaining needle, extend flexible pipe, puncture needle and Paracentesis needle holder, infusion connector, by extending hose connection puncture needle and Paracentesis needle holder, extends flexible pipe and is provided with positive pressure devices.
The concrete structure figure of positive pressure devices is see Fig. 2, positive pressure devices comprises base and roller, transfusion groove is provided with between base and roller, extend flexible pipe through this transfusion groove, positive pressure devices chassis interior both sides are provided with guide rail, guide rail and the parallel placement of prolongation flexible pipe, two side rails are at least provided with two pair roller positioners.
Positioner can be retaining muscle or snap ring or the other forms of location structure such as hasp or latch.
Now provide following examples using retaining muscle as the positioner of roller:
Positive pressure devices inside is provided with cavity, extend flexible pipe through this cavity, cavity entrance point side is provided with the retaining muscle of a protrusion, exits positive pressure devices for preventing roller, cavity exit end side is provided with the retaining muscle of a protrusion, for preventing the rollback of roller in indwelling process.Roller surface is provided with stamp, sees Fig. 3, in order to increasing friction force, prevents roller-coaster.
Cavity entrance point cross-sectional width in positive pressure devices is greater than cavity exit end cross-sectional width, during use, liquid flows through cavity through extending flexible pipe, positive pressure devices is opened, see Fig. 4, liquid inflow port is cavity entrance point, and liquid flowing outlet is cavity exit end, when roller-coaster is to cavity exit end, roller outer surface and cavity inner wall fit, and positive pressure devices closes, and sees Fig. 5.When will again infuse, needing first to push back roller, pushing back in process and can forming reverse flow and even blood back in prolongation flexible pipe, by observing whether have blood back, can judge whether inlying catheter plugging occurs.
The using method of the remaining needle of continuous positive pressure is provided, comprises the following steps, can see Fig. 6:
1, during stopping infusion, roller is pushed into pan outlet end, stops medicinal liquid backflow;
2, use 1ml syringe, extract 0.5ml normal saline;
3,0.5ml normal saline is expelled in remaining needle by calparine cap, keeps syringe core rod not rollback, extract syringe rapidly;
4, now extend flexible pipe to be stressed expansion, owing to extending the high resiliency of flexible pipe, hydraulic pressure is produced in the prolongation flexible pipe of infusion connector one end, this hydraulic pressure can make the prolongation flexible pipe of roller and base gap location produce gap, the normal saline before injected slowly can flow to inlying catheter by this gap, stop blood backflow in indwelling flexible pipe, avoid blood to solidify in inlying catheter, block.
Embodiment 2
Infusion connector is by extending hose connection catheter block, and extend flexible pipe and be provided with positive pressure devices, positive pressure devices comprises base and roller, transfusion groove is provided with between base and roller, extend flexible pipe through this transfusion groove, positive pressure devices chassis interior both sides are provided with guide rail, guide rail and the parallel placement of prolongation flexible pipe.Two side rails are at least provided with three pair roller retaining muscle, transfusion groove entrance point cross section is greater than transfusion groove port of export cross section, and transfusion groove entrance point cross-sectional width is greater than cross-sectional width in the middle part of cavity.
As shown in Figure 7, a pair, retaining muscle, near entrance point, exits base for preventing roller; Be positioned at for a pair in the middle part of guide rail, for rear first time positioning roller and prevent roller rollback of having infused, avoid producing blood back; Be positioned at for a pair near the port of export, locate for second time in indwelling process and prevent roller rollback, avoid producing blood back.
Base bottom is provided with fits with the finger shape of people, clamps the arcuate structure of base, handled easily when pushing away and push back roller before being convenient to.Initial and namely positive pressure devices under opening produces active force by positive pressure devices to prolongation flexible pipe by shifting roller, by extruding, propelling positive pressure devices after having infused, flowed in liquid conductive pipe front end in prolongation flexible pipe, catheter proximal end is made to have liquid to flow out, when avoiding infuse next time, blood remains in conduit and forms thromboembolism, as shown in Fig. 8 ~ Fig. 9.
Embodiment 3
Extend flexible pipe through this transfusion groove, positive pressure devices chassis interior both sides are provided with guide rail, guide rail and the parallel placement of prolongation flexible pipe.Two side rails are at least provided with three pair roller retaining muscle, transfusion groove entrance point cross section is greater than transfusion groove port of export cross section, and transfusion groove entrance point cross-sectional width is greater than cross-sectional width in the middle part of cavity.
A pair, retaining muscle, near entrance point, exits base for preventing roller; Be positioned at for a pair in the middle part of guide rail, for rear first time positioning roller and prevent roller rollback of having infused, avoid producing blood back; Be positioned at for a pair near the port of export, locate for second time in indwelling process and prevent roller rollback, avoid producing blood back.Above pan outlet end, have a circular shaft structure, circular shaft is provided with a hasp, as shown in figure 13, for preventing roller rollback.Have the barb that two places extend below the front end of hasp, as shown in figure 15, when on buckle cap, barb will be buckled in the guide rail of base.Hasp has two sections of through holes just in time corresponding roller first time location and position of second time location, prevents roller rollback.
Base bottom is provided with fits with the finger shape of people, clamps the arcuate structure of base, handled easily when pushing away and push back roller before being convenient to.Initial and positive pressure devices schematic diagram under opening as shown in figure 11, namely by positive pressure devices, active force is produced to prolongation flexible pipe by shifting roller, by extruding, propelling positive pressure devices after having infused, flowed in liquid conductive pipe front end in prolongation flexible pipe, catheter proximal end is made to have liquid to flow out, when avoiding infuse next time, blood remains in conduit and forms thromboembolism, as shown in Figure 12 ~ Figure 13.
Claims (10)
1. the sustainable remaining needle that malleation is provided, comprise infusion connector, extend flexible pipe, puncture needle, Paracentesis needle holder and conduit tube component, infusion connector is by extending hose connection catheter block, described prolongation flexible pipe is provided with positive pressure devices, described positive pressure devices comprises base and roller, transfusion groove is provided with between base and roller, extend flexible pipe through this transfusion groove, described positive pressure devices chassis interior both sides are provided with guide rail, two side rails are at least provided with two pair roller positioners, described transfusion groove entrance point cross-sectional area is greater than transfusion groove port of export cross-sectional area, described base and roller, when roller is pushed into pan outlet end, now the gap of idler wheel bottom and base is extend flexible pipe twice wall thickness 70% ~ 80%, described prolongation flexible pipe is made by having elastomeric macromolecular material, and wall thickness is 0.35mm ~ 0.45mm.
2. a kind of sustainable remaining needle that malleation is provided as claimed in claim 1, it is characterized in that two described side rails are at least provided with two pair roller positioners to can be replaced two side rails and be provided with at least three pair roller retaining muscle, described roller retaining muscle lays respectively near transfusion groove entrance point place, in the middle part of transfusion groove port of export place and guide rail.
3. a kind of sustainable remaining needle that malleation is provided as claimed in claim 2, it is characterized in that there is a circular shaft structure above described pan outlet end, circular shaft is provided with a hasp, for preventing roller rollback, the barb that two places extend is had below the front end of hasp, when on buckle cap, barb will be buckled in the guide rail of base, hasp have two through holes, two described through holes are the locating hole of roller, this two places locating hole is positioned at the position of roller first time location and second time location, prevents roller rollback.
4. a kind of sustainable remaining needle that malleation is provided as claimed in claim 2, it is characterized in that described prolongation flexible pipe one end connects infusion connector and calparine cap, extend the flexible pipe other end and connect piercing portions, piercing portions comprises catheter block, Paracentesis needle holder and sheath, isolation room is provided with in described catheter block, isolation room is by inlying catheter connecting puncture needle, and sheath is set in puncture needle and the outside also one end of inlying catheter is fixed on catheter block.
5. a kind of sustainable remaining needle providing malleation as claimed in claim 2, is characterized in that described base bottom is provided with arcuate structure.
6. a kind of sustainable remaining needle providing malleation as claimed in claim 1 or 2, is characterized in that described guide rail and the parallel placement of prolongation flexible pipe.
7. a kind of sustainable remaining needle providing malleation as claimed in claim 1 or 2, is characterized in that described transfusion groove entrance point cross-sectional width is greater than cross-sectional width in the middle part of cavity.
8. a kind of sustainable remaining needle providing malleation as claimed in claim 1 or 2, is characterized in that described positioner is retaining muscle or snap ring or hasp or latch.
9. a kind of sustainable remaining needle that malleation is provided as claimed in claim 1 or 2, it is characterized in that described positioner, a pair near entrance point, base is exited for preventing roller, near the port of export, for preventing the rollback of roller in indwelling process, avoid producing blood back for a pair.
10. a kind of sustainable remaining needle providing malleation as claimed in claim 1 or 2, is characterized in that described remaining needle using method comprises the following steps:
1, during stopping infusion, roller is pushed into pan outlet end, stops medicinal liquid backflow;
2, use 1ml syringe, extract 0.5ml normal saline;
3,0.5ml normal saline is expelled in remaining needle by calparine cap, keeps syringe core rod not rollback, extract syringe rapidly;
4, now extend flexible pipe to be stressed expansion, owing to extending the high resiliency of flexible pipe, hydraulic pressure is produced in the prolongation flexible pipe of infusion connector one end, this hydraulic pressure can make the prolongation flexible pipe of roller and base gap location produce gap, the normal saline before injected slowly can flow to inlying catheter by this gap, stop blood backflow in indwelling flexible pipe, avoid blood to solidify in inlying catheter, block.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510519539.2A CN105056341B (en) | 2015-07-08 | 2015-08-21 | A kind of remaining needle that continuous positive pressure is provided |
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2015204882720 | 2015-07-08 | ||
| CN201520488272 | 2015-07-08 | ||
| CN201510519539.2A CN105056341B (en) | 2015-07-08 | 2015-08-21 | A kind of remaining needle that continuous positive pressure is provided |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105056341A true CN105056341A (en) | 2015-11-18 |
| CN105056341B CN105056341B (en) | 2018-02-23 |
Family
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Family Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520638475.3U Withdrawn - After Issue CN205084112U (en) | 2015-07-08 | 2015-08-21 | A keep somewhere needle of continuous positive airway pressure is provided |
| CN201510519539.2A Active CN105056341B (en) | 2015-07-08 | 2015-08-21 | A kind of remaining needle that continuous positive pressure is provided |
Family Applications Before (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520638475.3U Withdrawn - After Issue CN205084112U (en) | 2015-07-08 | 2015-08-21 | A keep somewhere needle of continuous positive airway pressure is provided |
Country Status (1)
| Country | Link |
|---|---|
| CN (2) | CN205084112U (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105854125A (en) * | 2016-04-05 | 2016-08-17 | 欧阳小青 | Positive-pressure liquid stopping clamp |
| CN105944185A (en) * | 2016-04-06 | 2016-09-21 | 欧阳小青 | Thrombosis-preventing blood-stopping clip |
| CN106730141A (en) * | 2016-12-23 | 2017-05-31 | 欧阳小青 | A kind of safe type retention needle |
| CN107998484A (en) * | 2017-12-28 | 2018-05-08 | 谢世庚 | Washing pipe formula liquid stopping clamp |
| CN109091752A (en) * | 2018-09-19 | 2018-12-28 | 华蓥市明月镇小学 | A kind of disposable infusion connector |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN205084112U (en) * | 2015-07-08 | 2016-03-16 | 上海正邦医疗科技有限公司 | A keep somewhere needle of continuous positive airway pressure is provided |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2077713U (en) * | 1990-10-27 | 1991-05-29 | 刘建军 | Logarithm graduation type safety perfusion tube clip. |
| CN2431890Y (en) * | 2000-03-17 | 2001-05-30 | 上海米沙瓦医科工业有限公司 | Flow regulator |
| CN2561421Y (en) * | 2002-08-26 | 2003-07-23 | 上海长海医院 | Disposable speed control quantitative infusion adjuster |
| CN203139264U (en) * | 2013-03-20 | 2013-08-21 | 南通市肿瘤医院 | Gear adjustable transfusion adjuster convenient and fast to use |
| CN103480060A (en) * | 2013-09-16 | 2014-01-01 | 张丽君 | Convenient medical positive-pressure remaining needle |
| CN205084112U (en) * | 2015-07-08 | 2016-03-16 | 上海正邦医疗科技有限公司 | A keep somewhere needle of continuous positive airway pressure is provided |
-
2015
- 2015-08-21 CN CN201520638475.3U patent/CN205084112U/en not_active Withdrawn - After Issue
- 2015-08-21 CN CN201510519539.2A patent/CN105056341B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2077713U (en) * | 1990-10-27 | 1991-05-29 | 刘建军 | Logarithm graduation type safety perfusion tube clip. |
| CN2431890Y (en) * | 2000-03-17 | 2001-05-30 | 上海米沙瓦医科工业有限公司 | Flow regulator |
| CN2561421Y (en) * | 2002-08-26 | 2003-07-23 | 上海长海医院 | Disposable speed control quantitative infusion adjuster |
| CN203139264U (en) * | 2013-03-20 | 2013-08-21 | 南通市肿瘤医院 | Gear adjustable transfusion adjuster convenient and fast to use |
| CN103480060A (en) * | 2013-09-16 | 2014-01-01 | 张丽君 | Convenient medical positive-pressure remaining needle |
| CN205084112U (en) * | 2015-07-08 | 2016-03-16 | 上海正邦医疗科技有限公司 | A keep somewhere needle of continuous positive airway pressure is provided |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105854125A (en) * | 2016-04-05 | 2016-08-17 | 欧阳小青 | Positive-pressure liquid stopping clamp |
| CN105944185A (en) * | 2016-04-06 | 2016-09-21 | 欧阳小青 | Thrombosis-preventing blood-stopping clip |
| CN106730141A (en) * | 2016-12-23 | 2017-05-31 | 欧阳小青 | A kind of safe type retention needle |
| CN107998484A (en) * | 2017-12-28 | 2018-05-08 | 谢世庚 | Washing pipe formula liquid stopping clamp |
| CN109091752A (en) * | 2018-09-19 | 2018-12-28 | 华蓥市明月镇小学 | A kind of disposable infusion connector |
Also Published As
| Publication number | Publication date |
|---|---|
| CN105056341B (en) | 2018-02-23 |
| CN205084112U (en) | 2016-03-16 |
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