CN204840512U - Prevent back that blood infusion connects - Google Patents
Prevent back that blood infusion connects Download PDFInfo
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- CN204840512U CN204840512U CN201520431757.6U CN201520431757U CN204840512U CN 204840512 U CN204840512 U CN 204840512U CN 201520431757 U CN201520431757 U CN 201520431757U CN 204840512 U CN204840512 U CN 204840512U
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- liquid
- return prevention
- blood return
- joint chair
- interior joint
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Abstract
The utility model provides a prevent back that blood infusion connects, including outer union, interior joint chair and elasticity separation piece, wherein the outer union with interior joint chair sealing connection, elasticity separation piece set up the inlet of outer union with between the liquid outlet of interior joint chair, and its periphery with the interior wall connection of inlet, elasticity separation piece has closing member and leads to the liquid mouth, closing member covers the liquid outlet of interior joint chair. The utility model discloses a prevent back that blood infusion connects is initial with the fixed setting of elasticity separation piece, only relies on self deforming of elasticity separation piece to realize making the one -way circulation of liquid medicine the utility model discloses even equal or the two pressure differential also can prevent the blood backflow when less at hydraulic pressure and human venous pressure, effectively solved the prevent back that blood infusion connects among the prior art and can't really play the problem of preventing back blood and acting on to even if make infusion walk about at will or raise the arm and blood phenomenon, the clinical practice of being more convenient for also not to appear back at the infusion in -process.
Description
Technical field
This utility model relates to a kind of disposable medical instrument, particularly relates to a kind of infusion connector with blood return prevention function, belongs to medical instruments field.
Technical background
At present, the transfusion device that domestic each medical institutions are used for venous transfusion is generally disposable transfusion device, and it is a kind of through aseptic process, the medical treatment consumptive materials setting up passage between vein and medicinal liquid.Existing general infusion set is generally connected to form by syringe needle (as disposable venoclysis needle, venous detaining needle etc.), helmet, infusion tube, liquid medicine filter, flow regulator, Murphy's dropper, bottle plug puncture unit, air inlet pipe air filter etc., being mainly used in the transfusion of clinical gravity type, serving positive role to preventing the cross infection in infusion process.
In Clinical practice, the bottle plug puncture unit of transfusion device is inserted infusion bottle by medical personnel, infusion bottle is hung on transfusion pole, aerofluxus also makes whole infusion tube be full of medicinal liquid, close flow regulator subsequently, venipuncture can be carried out, just flow regulator can be opened after syringe needle puncture fixes, and an adjustment speed is infused, medicinal liquid flows in Murphy's dropper along infusion tube under the effect of atmospheric pressure, when in Murphy's dropper, water column pressure is greater than venous pressure, the liquid runs down infusion tube in infusion bottle flows into vein.But, in infusion process or when remaining a small amount of medicinal liquid in infusion tube or when medicinal liquid was totally lost or from the stopping time, because water column pressure is now lower than venous pressure, if do not close flow regulator in time or extract syringe needle, then will the venous return of patient be caused in infusion tube, unexpected blood back phenomenon occurs.Once there is blood back, gently then can frighten patient, cause worry and the uneasiness of patient, heavy then can cause infusion tube cannot continue due to air embolism transfusion.Therefore, how effectively to address this problem in treatment clinical course and the adverse consequences brought is industry comparatively stubborn problem always.
For this reason, much research is devoted to develop the transfusion device with blood return prevention function, such as Chinese patent literature CN203169710U discloses a kind of blood return preventer, comprise blood return prevention joint upper cover, silica gel piece, blood return prevention joint base, blood return prevention joint upper cover is fixedly connected with blood return prevention joint base, the junction of blood return prevention joint upper cover and blood return prevention joint base has a cavity, silica gel piece is arranged in the cavities, silica gel piece is drum-shaped, the bottom of silica gel piece is near blood return prevention joint upper cover, the opening of silica gel piece is near blood return prevention joint base, the bottom of silica gel piece is provided with circle first projection.In the process of transfusion, silica gel piece is under the pressure of medicinal liquid, to blood return prevention joint base motions in cavity, first projection is separated with blood return prevention joint upper cover, the opening portion of silica gel piece is touched gently on blood return prevention joint base, now medicinal liquid can from opening portion with flow in the conduit that is connected with blood return prevention joint base the contact gap of blood return prevention joint base; When transfusion completes, silica gel piece upwards pushes up by the pressure of inside of human body, and silica gel piece moves upward, and the first projection tightly fits together with blood return prevention joint upper cover, and this structure can prevent gas from entering, thus plays blood return prevention function.
Obviously, above-mentioned technology relies on barrel-shaped silica gel piece moving up and down in the cavity that joint upper cover and base enclose just to be achieved liquid medicine flow and the function of occlude blood, because silica gel piece is movable in above-mentioned cavity, not be fixedly installed, can make like this water column pressure in Murphy's dropper and venous pressure quite or the pressure reduction of the two is less time, silica gel piece all will move to the middle part of cavity, neither fit with joint upper cover, not inconsistent with joint base yet, silica gel piece now just cannot the backflow of block blood, thus cause the blood return preventer in this technology effectively can not play the effect of blood return prevention.Given this, how improving to overcome above-mentioned defect to the structure of blood return prevention infusion connector of the prior art, is the still unsolved technical problem in this area.
Utility model content
What this utility model solved is the problem that effectively can not realize blood return prevention function existing for blood return prevention infusion connector of the prior art, and then provides one effectively can prevent blood backflow and the more simple blood return prevention infusion connector of structure.
The technical scheme that this utility model realizes above-mentioned purpose is:
A kind of blood return prevention infusion connector, comprise coupling and interior joint chair, described coupling and described interior joint chair are tightly connected,
Also comprise the elasticity barrier flaps being provided with closure and fluid-through port;
Described closure covers the liquid outlet of described interior joint chair to limit the flowing of described liquid outlet place liquid;
Described elasticity barrier flaps is arranged between the inlet of described coupling and the liquid outlet of described interior joint chair, and its periphery is connected with the inwall of described inlet.
Further, the projection of liquid outlet in described elasticity barrier flaps of described interior joint chair is positioned at described closure, is not less than described liquid outlet to make described closure.
Preferably, described closure is arranged at the middle part of described elasticity barrier flaps, and described fluid-through port is arranged around described closure.
Further, be provided with the first medicine liquid channel in described interior joint chair, described first medicine liquid channel comprises Liquid transfer section and reducing section, and described reducing section reduces to form described liquid outlet along liquid medicine flow direction bore gradually.
Preferably, the cross section of described reducing section is circular or is the closed curve that two parallel line segments and two sections of circular arcs connecting two described line segment homonymy end points are formed, and described line segment is connected to form described closed curve from beginning to end with described circular arc.
Preferably, also comprise air vent, described air vent is arranged in the outside wall surface of motion stops, and described motion stops is embedded on the sidewall of described first medicine liquid channel, is provided with water preventing ability air-filtering membrane in described motion stops.
Preferably, the periphery around described reducing section is also formed with annular boss, between the inwall and the outside wall surface of described reducing section of described annular boss, form back liquid space, the fluid-through port of the described time corresponding described elasticity barrier flaps of liquid space.
Preferably, the second medicine liquid channel is provided with in described coupling, described second medicine liquid channel is divided into liquid-inlet section and transports section, and described liquid-inlet section reduces gradually along liquid medicine flow direction bore, and the import of described liquid-inlet section is the inlet of described coupling.
Preferably, the periphery of described elasticity barrier flaps is provided with fixture, between the liquid outlet being suitable for described elasticity barrier flaps to be fixed on described interior joint chair and the inlet of described coupling.
Preferably, described fixture is a round platform, described round platform is arranged at above described annular boss, the internal face of the liquid-inlet section of its periphery wall and described coupling fits, the upper and lower surface running through described round platform is provided with the 3rd medicine liquid channel, and the periphery of described elasticity barrier flaps is fixed on the internal face of described 3rd medicine liquid channel.
Blood return prevention infusion connector described in the utility model, its coupling and interior joint chair are tightly connected, and the elasticity barrier flaps with closure and fluid-through port is set between the inlet and the liquid outlet of interior joint chair of coupling, the periphery of elasticity barrier flaps is connected with the inwall of the inlet of coupling, and makes closure cover the liquid outlet of interior joint chair; Hydraulic pressure can be formed after being filled with medicinal liquid like this in the flexible pipe of transfusion device, force the generation deformation of elasticity barrier flaps and away from the liquid outlet of interior joint chair, thus form transfusion path to realize the flowing of medicinal liquid to human body, along with the carrying out of transfusion, when hydraulic pressure is equal to or less than human vein pressure, a small amount of blood backflow makes elasticity barrier flaps recover deformation and blocks the liquid outlet of interior joint chair, effectively to prevent blood backflow in the flexible pipe of transfusion device, thus can avoid the generation of unexpected blood back phenomenon.
Compared with blood return prevention infusion connector of the prior art, blood return prevention infusion connector tool described in the utility model has the following advantages:
(1) blood return prevention infusion connector described in the utility model first by allow medicinal liquid by but prevention blood backflow elasticity barrier flaps be fixed between the inlet of coupling and the liquid outlet of interior joint chair, only rely on the elastic deformation of elasticity barrier flaps self just can realize the one-way flow of medicinal liquid, could compared with the blood return prevention infusion connector that refluxes of occlude blood by the displacement of silica gel piece with needs of the prior art, even if infusion connector of the present utility model when hydraulic pressure and human vein press equal or the two pressure reduction is less, also still blood backflow can be stoped, thus efficiently solve the problem that blood return prevention infusion connector of the prior art really cannot play blood return prevention effect, even if make transfusion person arbitrarily walk about in infusion process or elevation arm also there will not be blood back phenomenon, more be convenient to Clinical practice.
(2) inwall of the periphery of elasticity barrier flaps with the inlet of coupling only need be connected by blood return prevention infusion connector described in the utility model, and make the closure of elasticity barrier flaps cover the liquid outlet of interior joint chair, utilize the mating reaction between elasticity barrier flaps and liquid outlet wall, just can realize the one-way flow of medicinal liquid and stop blood backflow, make this utility model and infusion connector structure compared of the prior art more simple, be also easier to processing and make.
(3) blood return prevention infusion connector described in the utility model, by arranging first medicine liquid channel with Liquid transfer section and reducing section within it joint chair, and reducing section reduces along liquid medicine flow direction bore the liquid outlet forming interior joint chair gradually, medicinal liquid because the bore of the first medicine liquid channel narrows, its flow velocity increased when can be made like this to arrive elasticity barrier flaps, thus can more effectively force elasticity barrier flaps along the flow direction generation deformation of medicinal liquid and away from the liquid outlet of interior joint chair, the fluid-through port that medicinal liquid like this just can be offered from elasticity barrier flaps flows to human body, to realize the circulation of medicinal liquid.
(4) blood return prevention infusion connector described in the utility model, by setting motion stops on the sidewall of the first medicine liquid channel, and air vent is set in the outside wall surface of motion stops, water preventing ability air-filtering membrane is set in motion stops, infusion connector of the present utility model is made also to have the function of aerofluxus like this, once be mixed with air in infusion pipeline, so bubble along with medicinal liquid flow through infusion connector of the present utility model time, bubble will be overflowed from air vent automatically, thus the situation effectively avoiding air to enter human body occurs, also greatly simplifie the bleeding in infusion process simultaneously.
(5) blood return prevention infusion connector described in the utility model, the periphery of the reducing section around the first medicine liquid channel is provided with annular boss, make to form back liquid space between the outside wall surface of the inwall of annular boss and reducing section, this time liquid space corresponds to the fluid-through port of elasticity barrier flaps; So be arranged so that elasticity barrier flaps only contacts with the wall of interior joint chair liquid outlet, be conducive to the surface smoothness keeping elasticity barrier flaps, thus guarantee that the closure of the elasticity barrier flaps when there being a small amount of blood backflow can closely be fitted with the wall of interior joint chair liquid outlet, to reach blood return prevention effect better.
(6) blood return prevention infusion connector described in the utility model, by arranging fixture at the periphery of elasticity barrier flaps, and preferably fixture is a round platform, this round platform is arranged at above annular boss, the internal face of the liquid-inlet section of its periphery wall and coupling fits, run through the upper of round platform, lower surface is provided with the 3rd medicine liquid channel, the periphery of elasticity barrier flaps is fixed on the internal face of the 3rd medicine liquid channel, thus the liquid outlet of elasticity barrier flaps and interior joint chair can be fitted more closely, also elasticity barrier flaps is made can be fixed on more firmly between the inlet of coupling and the liquid outlet of interior joint chair, be conducive to the blood return prevention effect strengthening elasticity barrier flaps.
(7) blood return prevention infusion connector described in the utility model, its coupling and interior joint chair can be standard 6: 100 cone joints, also can be 6: 100 screwed unions, interior joint chair can be connected with liquid medicine filter, also can be connected with band conehead two is logical; Coupling can directly replace transfusion needle stand to use, and it is bonding with the small hose of transfusion needle, on the small hose that also can be connected to transfusion needle or be assemblied on the threeway seat of venous detaining needle, thus make infusion connector of the present utility model have universality, can directly be assemblied in the various functional transfusion devices such as such as precision filter infusion set, bag transfusion system, burette type transfusion apparatus, automatic stop infusion apparatus, automatic-exhaust transfusion device and central venous catheter.
Accompanying drawing explanation
Fig. 1 is the sectional structure chart of a kind of embodiment of blood return prevention infusion connector described in the utility model;
Fig. 2 is the structure chart of a kind of embodiment of elasticity barrier flaps in blood return prevention infusion connector described in the utility model;
Fig. 3 is the structure chart of the another kind of embodiment of elasticity barrier flaps in blood return prevention infusion connector described in the utility model;
Fig. 4 is the sectional structure chart of the another kind of embodiment of blood return prevention infusion connector described in the utility model;
Wherein, Reference numeral is as follows:
10-coupling; 11-inlet; 12-second medicine liquid channel; 13-liquid-inlet section; 14-transports section; Joint chair in 20-; 21-liquid outlet; 22-first medicine liquid channel; 23-Liquid transfer section; 24-reducing section; 25-breeze way; 26-annular boss; 30-elasticity barrier flaps; 31-closure; 32-fluid-through port; 33-fixture; 40-air vent; 41-water preventing ability air-filtering membrane; 42-motion stops.
Detailed description of the invention
Below in conjunction with specific embodiment, blood return prevention infusion connector provided by the utility model is described in detail.
Blood return prevention infusion connector described in the present embodiment, as shown in Figure 1, comprise coupling 10, interior joint chair 20 and elasticity barrier flaps 30, wherein, described coupling 10 is tightly connected with described interior joint chair 20, described elasticity barrier flaps 30 is arranged between the inlet 11 of described coupling 10 and the liquid outlet 21 of described interior joint chair 20, and its periphery is connected with the internal face of described inlet 11; Described elasticity barrier flaps 30 has closure 31 and fluid-through port 32, and described closure 31 covers the liquid outlet 21 of described interior joint chair 20, to limit the flowing of described liquid outlet 21 place liquid.Elasticity barrier flaps 30 in the present embodiment can be made up of silica gel, can possess good elasticity.
Blood return prevention infusion connector described in the present embodiment in use, hydraulic pressure can be formed be filled with medicinal liquid in the flexible pipe of transfusion device after, force elasticity barrier flaps 30 that deformation occurs and away from the liquid outlet 21 of interior joint chair 20, thus form transfusion path to realize the flowing of medicinal liquid to human body, along with the carrying out of transfusion, when hydraulic pressure is equal to or less than human vein pressure, a small amount of blood backflow makes elasticity barrier flaps 30 recover deformation and block the liquid outlet 21 of interior joint chair 20, effectively to prevent blood backflow in the flexible pipe of transfusion device, thus the generation of unexpected blood back phenomenon can be avoided, even if make transfusion person arbitrarily walk about in infusion process or elevation arm also there will not be blood back phenomenon, very be convenient to Clinical practice.The projection of liquid outlet 21 in described elasticity barrier flaps 30 of described interior joint chair 20 is in the present embodiment positioned at described closure 31, described liquid outlet 21 is not less than to make described closure 31, such setting more can guarantee fitting tightly of the airtight portion 31 of elasticity barrier flaps 30 and the liquid outlet 21 of interior joint chair 20, makes the blood return prevention infusion connector described in the present embodiment have better blood return prevention effect.
As preferred embodiment, blood return prevention infusion connector described in the present embodiment is provided with the first medicine liquid channel 22 in described interior joint chair 20, described first medicine liquid channel 22 comprises Liquid transfer section 23 and reducing section 24, and described reducing section 24 reduces to form described liquid outlet 21 along liquid medicine flow direction bore gradually; Medicinal liquid because the bore of the first medicine liquid channel 22 narrows, its flow velocity increased when can be made like this to arrive elasticity barrier flaps, thus can more effectively force elasticity barrier flaps 30 along the flow direction generation deformation of medicinal liquid and away from the liquid outlet 21 of interior joint chair 20, the fluid-through port 32 that medicinal liquid like this just can be offered from elasticity barrier flaps 30 flows to human body, to realize the circulation of medicinal liquid.
The cross section of the described reducing section 24 in the present embodiment can be circular, also can be the closed curve that two parallel line segments and the two sections of circular arcs connecting two described line segment homonymy end points are formed, described line segment be connected to form described closed curve from beginning to end with described circular arc.Correspondingly, refer to Fig. 2 and Fig. 3, the shape of the shape of the elasticity barrier flaps 30 in the present embodiment and the cross section of described reducing section 24 matches, and described closure 31 is arranged at the middle part of described elasticity barrier flaps 30, described fluid-through port 32 is arranged around described closure 31, the shape of described fluid-through port 32 can be poroid, also can be wire.
Further, coupling can be flowed to by interior joint chair more swimmingly to make medicinal liquid, as shown in Figure 4, described first medicine liquid channel 22 in blood return prevention infusion connector described in the present embodiment such as to be also provided with at the breeze way 25 of bore, the import of described breeze way 25 is connected with the outlet of described reducing section 24, and the shape of cross section of described breeze way 25 is consistent with the shape of cross section that described reducing section 24 exports.
As the embodiment of changeable type, blood return prevention infusion connector described in the present embodiment is also formed with annular boss 26 around the periphery of its reducing section 24, liquid space is formed back, the fluid-through port 32 of the described time corresponding described elasticity barrier flaps 30 of liquid space between the inwall and the outside wall surface of described reducing section 24 of described annular boss 26; Elasticity barrier flaps 30 is so made only to contact with the wall of the liquid outlet 21 of interior joint chair 20, be conducive to the surface smoothness keeping elasticity barrier flaps, thus guarantee that the closure 31 of the elasticity barrier flaps 30 when there being a small amount of blood backflow can closely be fitted with the wall of the liquid outlet 21 of interior joint chair 20, to reach blood return prevention effect better.
As preferred embodiment, the second medicine liquid channel 12 is provided with in coupling 10 described in the present embodiment, described second medicine liquid channel 12 is divided into liquid-inlet section 13 and transports section 14, described liquid-inlet section 13 reduces gradually along liquid medicine flow direction bore, and the import of described liquid-inlet section 13 is the inlet 11 of described coupling 10.
Further preferably, can fit more closely with the liquid outlet 21 of interior joint chair 20 to make elasticity barrier flaps 30, the present embodiment also arranges fixture 33 at the periphery of described elasticity barrier flaps 30, with between the liquid outlet 21 that described elasticity barrier flaps 30 is fixed on described interior joint chair 20 more firmly and the inlet 11 of described coupling 10, thus be conducive to the blood return prevention effect strengthening elasticity barrier flaps.Described fixture 33 in the present embodiment can be chosen as a round platform, described round platform is arranged at above described annular boss 26, the internal face of the liquid-inlet section 13 of its periphery wall and described coupling 10 fits, the upper and lower surface running through described round platform is provided with the 3rd medicine liquid channel, and the periphery of described elasticity barrier flaps 30 is fixed on any position of the internal face of described 3rd medicine liquid channel.
As interchangeable embodiment, blood return prevention infusion connector described in the present embodiment also comprises air vent 40, described air vent 40 is arranged in the outside wall surface of motion stops 42, described motion stops 42 is embedded on the sidewall of described first medicine liquid channel 22, water preventing ability air-filtering membrane 41 is provided with in described motion stops 42, the infusion connector of the present embodiment can be made so also to have the function of aerofluxus concurrently, once be mixed with air in infusion pipeline, so bubble along with medicinal liquid flow through infusion connector of the present utility model time, bubble will be overflowed from air vent automatically, thus the situation effectively avoiding air to enter human body occurs, also greatly simplifie the bleeding in infusion process simultaneously.
In addition, because the described coupling 10 in the present embodiment and interior joint chair 20 can be standard 6: 100 cone joints, also can be 6
:100 screwed unions, interior joint chair 20 can be connected with liquid medicine filter, also can be connected with band conehead two is logical, coupling 10 can directly replace transfusion needle stand to use, and it is bonding with the small hose of transfusion needle, on the small hose that also can be connected to transfusion needle or be assemblied on the threeway seat of venous detaining needle, therefore, infusion connector described in the present embodiment has universality, can directly be assemblied in such as precision filter infusion set, bag transfusion system, burette type transfusion apparatus, automatic stop infusion apparatus, in the various functional transfusion device such as automatic-exhaust transfusion device and central venous catheter.
Obviously, above-described embodiment is only for clearly example being described, and the restriction not to embodiment.For those of ordinary skill in the field, can also make other changes in different forms on the basis of the above description.Here exhaustive without the need to also giving all embodiments.And thus the apparent change of extending out or variation be still among the protection domain that this utility model creates.
Claims (10)
1. a blood return prevention infusion connector, comprises coupling (10) and interior joint chair (20), and described coupling (10) and described interior joint chair (20) are tightly connected,
It is characterized in that, also comprise the elasticity barrier flaps (30) being provided with closure (31) and fluid-through port (32);
Described closure (31) covers the liquid outlet (21) of described interior joint chair (20) to limit the flowing of described liquid outlet (21) place liquid;
Described elasticity barrier flaps (30) is arranged between the inlet (11) of described coupling (10) and the liquid outlet (21) of described interior joint chair (20), and its periphery is connected with the inwall of described inlet (11).
2. blood return prevention infusion connector according to claim 1, it is characterized in that, the projection of liquid outlet (21) on described elasticity barrier flaps (30) of described interior joint chair (20) is positioned at described closure (31), is not less than described liquid outlet (21) to make described closure (31).
3. blood return prevention infusion connector according to claim 1, it is characterized in that, described closure (31) is arranged at the middle part of described elasticity barrier flaps (30), and described fluid-through port (32) is arranged around described closure (31).
4. the blood return prevention infusion connector according to any one of claim 1-3, it is characterized in that, the first medicine liquid channel (22) is provided with in described interior joint chair (20), described first medicine liquid channel (22) comprises Liquid transfer section (23) and reducing section (24), and described reducing section (24) reduces to form described liquid outlet (21) along liquid medicine flow direction bore gradually.
5. blood return prevention infusion connector according to claim 4, is characterized in that, the cross section of described reducing section (24) is circular, or,
Be the closed curve that two parallel line segments and the two sections of circular arcs connecting two described line segment homonymy end points are formed, described line segment is connected to form described closed curve from beginning to end with described circular arc.
6. blood return prevention infusion connector according to claim 5, it is characterized in that, also comprise air vent (40), described air vent (40) is arranged in the outside wall surface of motion stops (42), described motion stops (42) is embedded on the sidewall of described first medicine liquid channel (22), is provided with water preventing ability air-filtering membrane (41) in described motion stops (42).
7. the blood return prevention infusion connector according to claim 5 or 6, it is characterized in that, periphery around described reducing section (24) is also formed with annular boss (26), liquid space is formed back, the fluid-through port (32) of the described time corresponding described elasticity barrier flaps (30) of liquid space between the inwall and the outside wall surface of described reducing section (24) of described annular boss (26).
8. the blood return prevention infusion connector according to any one of claim 1-3, it is characterized in that, the second medicine liquid channel (12) is provided with in described coupling (10), described second medicine liquid channel (12) is divided into liquid-inlet section (13) and transports section (14), described liquid-inlet section (13) is reduced gradually along liquid medicine flow direction bore, and the import of described liquid-inlet section (13) is the inlet (11) of described coupling (10).
9. blood return prevention infusion connector according to claim 7, it is characterized in that, the periphery of described elasticity barrier flaps (30) is provided with fixture (33), between the liquid outlet (21) being suitable for described elasticity barrier flaps (30) to be fixed on described interior joint chair (20) and the inlet (11) of described coupling (10).
10. blood return prevention infusion connector according to claim 9, it is characterized in that, described fixture (33) is a round platform, described round platform is arranged at described annular boss (26) top, the internal face of the liquid-inlet section (13) of its periphery wall and described coupling (10) fits, the upper and lower surface running through described round platform is provided with the 3rd medicine liquid channel, and the periphery of described elasticity barrier flaps (30) is fixed on the internal face of described 3rd medicine liquid channel.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520431757.6U CN204840512U (en) | 2015-06-19 | 2015-06-19 | Prevent back that blood infusion connects |
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| CN201520431757.6U CN204840512U (en) | 2015-06-19 | 2015-06-19 | Prevent back that blood infusion connects |
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| CN204840512U true CN204840512U (en) | 2015-12-09 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104888310A (en) * | 2015-06-19 | 2015-09-09 | 河南曙光健士医疗器械集团股份有限公司 | Blood return prevention infusion connector |
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2015
- 2015-06-19 CN CN201520431757.6U patent/CN204840512U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104888310A (en) * | 2015-06-19 | 2015-09-09 | 河南曙光健士医疗器械集团股份有限公司 | Blood return prevention infusion connector |
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| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20210528 Address after: Luohe City, Henan province 462331 Yuanhui District Riverside Metro Xiangjiang Road Patentee after: Henan Shuguang Jianshi Industrial Development Co.,Ltd. Address before: Xiangjiang West Road, Binhe new town, Yuanhui District, Luohe City, Henan Province Patentee before: HENAN SHUGUANG JIANSHI MEDICAL EQUIPMENT GROUP Co.,Ltd. Patentee before: Zou Chunping |
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| TR01 | Transfer of patent right |