CN205041878U - Infusion of needleless malleation connects - Google Patents
Infusion of needleless malleation connects Download PDFInfo
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- CN205041878U CN205041878U CN201520664894.4U CN201520664894U CN205041878U CN 205041878 U CN205041878 U CN 205041878U CN 201520664894 U CN201520664894 U CN 201520664894U CN 205041878 U CN205041878 U CN 205041878U
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- inner chamber
- lower house
- casing
- infusion connector
- upper shell
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Abstract
The embodiment of the utility model discloses infusion of needleless malleation connects belongs to medical instrument technical field, solves the infusion of traditional needleless and connects the blood backflow problem that exists. Reduce thromboses's risk, improve utilization ratio of pesticide. The embodiment of the utility model provides an in, the infusion connects and includes that inner chamber upper end internal diameter is lighter than the last casing of lower extreme internal diameter, is equipped with the piston valve in the internal chamber of epitheca, the cylinder upper end part, mid portion and the elasticity cylinder that are equipped with the cylinder recess have been included, the stereoplasm plunger is equipped with in the cylinder recess, stereoplasm plunger up end is equipped with a plurality of bosss, lower casing, the upper end of casing is arranged in the inner chamber of casing down, and lower casing lower extreme is for stretching out the circular cone locking of going up the inner chamber of casing connects, casing upper end lateral wall is equipped with and connects the liquid medicine circulation groove that constitutes the route with the circular cone locking down, inner chamber bottom in casing upper end is equipped with protrudingly and the exhaust hole down, mid portion and elasticity cylinder are arranged in casing and the lower common inner chamber of casing.
Description
Technical field
This utility model relates to technical field of medical instruments, particularly relates to a kind of Needleless barotropic infusion connector.
Background technology
Venous detaining needle is also called venous catheter needle, and it is made up of stainless nook closing member, soft trocar sheath and plastics needle stand.During puncture, trocar sheath is thrust in blood vessel together with nook closing member, after blood vessel sent into by sleeve pipe, extract nook closing member out, only the trocar sheath of softness is stayed the one transfusion instrument carrying out in the blood vessel infusing.The use of remaining needle can reduce patient because of venipuncture repeatedly and the misery caused and to the fear of having an injection, alleviate the impatience of the head of a family, be convenient to clinical application, suddenly, the rescue medication of critical patient, alleviate the workload of nurse, reduce patient pain, thus venous detaining needle is in wide clinical application.
But there is again some new problems in venous detaining needle in clinical position.As blocked in remaining needle, repeated multiple times washing pipe, tube sealing, extruding etc., both added nursing work load and consumptive material, too increases the probability of phlebitic incidence rate and nursing staff's accidental needle sticks wound.The appearance of no-needle transfusion joint well solves the problems referred to above of venous detaining needle existence.
Traditional needle-free infusion connector in use, when end of infusing removes Luer taper, can produce certain negative pressure, medicinal liquid meeting reverse flow under suction function, cause blood backflow in remaining needle, have thrombosed risk, thrombosis can cause remaining needle to block further.
Utility model content
This utility model embodiment provides a kind of Needleless barotropic infusion connector, avoids transfusion to terminate rear blood backflow, reduces thrombotic risk, improves the utilization rate of medicine.
In view of this, this utility model provides a kind of Needleless barotropic infusion connector, can comprise:
Inner chamber upper-end inner diameter is less than the upper shell 1 of bottom diameter, is provided with piston valve 3 in described upper shell inner chamber; Piston valve 3 comprises inside the upper part 15 of cylindrical groove 18, mid portion 16 and elastic cylinder 17; Cylindrical groove is built with hard plunger; Described hard its upper end face is provided with some boss 21;
Lower house 2, the upper end of described lower house is arranged in the inner chamber of upper shell, and lower house lower end is the cone locking joint 6 stretching out described upper shell inner chamber; Cone locking joint 6 has the structure of coincideing with upper shell lower end; The liquid medicine flow groove 10 forming path with described outer cone locked joints 6 is provided with outside described lower house upper end; Lower house upper end intracavity bottom is provided with protruding 12 and steam vent 14; Described projection is connected with elastic cylinder 17, and described mid portion 16 and elastic cylinder 17 are arranged in upper shell and the common inner chamber of lower house.Preferably, described piston valve 3 is yielding movable plug valve.
Preferably, upper part 15 outer wall of piston valve 3 is provided with integrated upper sealing ring 19.
Preferably, mid portion 16 outer wall of piston valve 3 is provided with integrated lower seal 20.
Preferably, be installed in described projection bottom piston valve 3.
Preferably, described upper shell and lower house are welded to connect.
Preferably, described upper shell is connected by ultrasonic bonding with lower house.
Preferably, the upper end lateral surface of described upper shell is helicitic texture.
Preferably, the projection across described lower house upper end intracavity bottom is provided with vent 13; Vent 13 communicates with steam vent 14.
Preferably, described elastic cylinder 17 inside is hollow structure, and outer wall is spring-like helically.
As can be seen from the above technical solutions, this utility model embodiment has the following advantages:
In this utility model embodiment, when liquid medicine injection, female Luer connects hard plunger, medicine liquid channel is formed between the boss of the upper surface of hard plunger, under External Force Acting, hard plunger and piston valve move down, and the medicine liquid channel outside the medicinal liquid between boss and lower house upper end circulates.When removing female Luer, hard plunger and piston valve reset, and extrude the inner medicinal liquid of Needleless barotropic infusion connector simultaneously, produce the positive pressure promoting rear medicinal liquid and discharge, prevent blood backflow.This Needleless barotropic infusion connector is simple to operate, use safety, malleation amount is large, residual capacity is little, and effectively can avoid needle stick injury and use the puncture exfoliation drawback brought of calparine cap, positive-pressure function avoids the formation of thrombosis, prevents the blocking of remaining needle.
Accompanying drawing explanation
In order to be illustrated more clearly in this utility model embodiment or technical scheme of the prior art, be briefly described to the accompanying drawing used required in embodiment or description of the prior art below, apparently, accompanying drawing in the following describes is embodiments more of the present utility model, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to these accompanying drawings.
Fig. 1 is the structural representation of Needleless barotropic infusion connector embodiment in this utility model;
Fig. 2 is the structural representation of the upper shell of Needleless barotropic infusion connector in this utility model;
Fig. 3 is the lower house structural representation of this utility model Needleless barotropic infusion connector;
Fig. 4 is the piston valve construction schematic diagram of this utility model Needleless barotropic infusion connector;
Fig. 5 is the hard plunger boss structure figure of this utility model Needleless barotropic infusion connector.
Detailed description of the invention
This utility model embodiment provides a kind of Needleless barotropic infusion connector, solves the blood backflow problem that traditional infusion joint exists, and reduces the risk that blood backflow causes thrombosis, improves the utilization rate of medicine, the blocking of control remaining needle.
The Needleless barotropic infusion connector that this utility model provides mainly comprises: the upper shell 1 with inner chamber, is provided with piston valve 3 in described upper shell inner chamber; Piston valve 3 comprises inside and offers the upper part 15 of cylindrical groove 18, mid portion 16 and elastic cylinder 17; Cylindrical groove is built with hard plunger; Described hard its upper end face is provided with some boss 21;
Lower house 2, the upper end of described lower house is arranged in the inner chamber of upper shell, lower house lower end be stretch out described upper shell inner chamber and be connected the cone locking joint 6 tightly locked with infusion connector apparatus; Cone locking joint 6 has the structure of coincideing with upper shell lower end; The liquid medicine flow groove 10 forming path with described outer cone locked joints 6 is provided with outside described lower house upper end; Lower house upper end intracavity bottom is provided with protruding and steam vent 14; Described projection is connected with elastic cylinder 17, and described mid portion 16 and elastic cylinder 17 are arranged in upper shell and the common inner chamber of lower house.
This utility model scheme is understood better in order to make those skilled in the art person, below in conjunction with the accompanying drawing in this utility model embodiment, technical scheme in this utility model embodiment is clearly and completely described, obviously, described embodiment is only the embodiment of this utility model part, instead of whole embodiments.Based on the embodiment in this utility model, those of ordinary skill in the art are not making the every other embodiment obtained under creative work prerequisite, all should belong to the scope of this utility model protection.
Shown in figure 1-Fig. 5, this Needleless barotropic infusion connector comprises the upper shell 1 and lower house 2 that are integrated by ultrasonic bonding, upper shell 1 and lower house 2 form main cavity (top of upper shell inner chamber, upper shell and lower house common inner chamber form), with reference to the structure of the upper shell inner chamber shown in figure 2, the inner chamber 8 that upper shell 1 inner chamber is divided into cylindrical cavity 7 from top to bottom, expands gradually, and in order to load the inner chamber 9 of lower house.
The inner core be jointly made up of piston valve 3 and hard plunger 4 has been installed in main cavity inside, piston valve 3 is made up of elastic rubber material, with reference to the structural representation of the piston valve shown in figure 4, comprise inside and offer the upper part 15 of cylindrical groove, mid portion 16 and elastic cylinder 17 3 part.A cylindrical groove 18 is offered in order to coated hard plunger 4 in inside, upper part 15, and elastic cylinder 17 inside is hollow structure, and outer wall is spring-like helically, be beneficial to compress and resilience time support upper part 15 and the moving up and down of mid portion 16.Upper part 15 outer wall of piston valve 3 is provided with the upper sealing ring 19 with cylindrical cavity 7 interference fit of upper shell 1, and mid portion 16 is provided with the lower seal 20 with cylindrical cavity 11 interference fit.Hard plunger 4 upper surface is provided with some boss 21 (shown in figure 5, for 3 boss), and the gap when inserting Rule outer cone between boss is that transfusion provides liquid medicine flow entrance.
Upper shell 1 upper end lateral surface is provided with screw thread 5, is convenient to firmly be connected with front end apparatus.
Shown in figure 3, lower house lower end is provided with cone locking joint 6, locks for being connected with transfusion instrument, and the inner chamber in the middle of cone locking joint 6 is communicated with the liquid medicine flow groove 10 outside lower house 2 upper end.The cylindrical cavity 11 of lower house provides space for piston valve 3 slides, and is provided with protruding 12 bottom cylindrical cavity 11, offers a vent 13 communicate with set steam vent 14 across protruding 12.Be arranged in the projection of lower house upper end inner chamber bottom piston valve, the vent of the air in piston valve in projection communicates with steam vent.
When external infusion apparatus is connected with Needleless barotropic infusion connector, the Luer taper of transfusion instrument and the boss of hard plunger are fitted, and form medicinal liquid runner between boss.The upper part 15 of hard plunger 4 and piston valve 3, mid portion 16 slide downward elasticity of compression cylinder 17 under the effect of external force, under the effect of lower seal 20, the inner additional air of elastic cylinder 17 flows through vent 13, jointly discharge through steam vent 14 together with the air between lower house cylindrical cavity 11 and elastic cylinder 17 outside, keep air in piston valve 3 inner chamber equal with outside air pressure.When upper sealing ring 19 is moved downward to disengaging upper shell cylindrical cavity 7, airtight medicine liquid channel is formed, medicinal liquid flows freely into, be input in other connectors of rear through the liquid medicine flow groove 10 of lower house, lower end cone locking joint, the upper end infusion pipeline of Needleless barotropic infusion connector is communicated with lower end infusion pipeline.Piston valve mid portion outer wall sealing ring keeps interference fit with lower house inwall all the time and slides at lower house inwall, ensure that the airtight of needleless joint inside, simultaneously lower housing cavity lower discharge hole effectively discharged under the effect of piston valve mid portion outer wall sealing ring piston valve inner and and lower house inwall between air.
Remove in the process of Luer taper, the cylinder upper part 15 of hard plunger 4 and piston valve 3, mid portion 16 upward sliding under the elastic force of elastic cylinder 17, under the effect of upper sealing ring 19 and lower seal 20, extrude the liquid medicine flow groove 10 that Needleless barotropic joint internal liquid flows through lower house 2 both sides downwards, thus produce positive pressure; After removing Luer taper completely, airtight under the effect of Needleless barotropic infusion connector sealing ring 19 on piston valve, home position got back to by piston valve 3.
The needleless forward infusion connector that the application provides, by producing positive pressure, preventing blood backflow, avoiding the formation of thrombosis and the blocking of remaining needle.This Needleless barotropic infusion connector is simple to operate, use safety, malleation amount is large, residual capacity is little, effectively can avoid needle stick injury and use the puncture exfoliation drawback brought of calparine cap.
The above, above embodiment only in order to the technical solution of the utility model to be described, is not intended to limit; Although be described in detail this utility model with reference to previous embodiment, those of ordinary skill in the art is to be understood that: it still can be modified to the technical scheme described in foregoing embodiments, or carries out equivalent replacement to wherein portion of techniques feature; And these amendments or replacement, do not make the essence of appropriate technical solution depart from the spirit and scope of each embodiment technical scheme of this utility model.
Claims (10)
1. a Needleless barotropic infusion connector, is characterized in that, comprising:
Inner chamber upper-end inner diameter is less than the upper shell (1) of bottom diameter, and piston valve (3) is housed in described upper shell inner chamber; Piston valve (3) comprises inside and offers the upper part (15) of cylindrical groove (18), mid portion (16) and elastic cylinder (17); Cylindrical groove is built with hard plunger; Described hard its upper end face is provided with some boss (21);
Lower house (2), the upper end of described lower house is arranged in the inner chamber of upper shell, and lower house lower end is the cone locking joint (6) stretching out described upper shell inner chamber; Cone locking joint (6) has the structure of coincideing with upper shell lower end; The liquid medicine flow groove (10) forming path with described cone locking joint (6) is provided with outside described lower house upper end; Lower house upper end intracavity bottom is provided with projection (12) and steam vent (14); Described projection is connected with elastic cylinder (17), and described mid portion (16) and elastic cylinder (17) are arranged in upper shell and the common inner chamber of lower house.
2. infusion connector according to claim 1, is characterized in that, described piston valve (3) is yielding movable plug valve.
3. infusion connector according to claim 1 and 2, is characterized in that, upper part (15) outer wall of piston valve (3) is provided with integrated upper sealing ring (19).
4. infusion connector according to claim 1 and 2, is characterized in that, mid portion (16) outer wall of piston valve (3) is provided with integrated lower seal (20).
5. infusion connector according to claim 1 and 2, is characterized in that, piston valve (3) bottom is installed in described projection (12).
6. infusion connector according to claim 1, is characterized in that, described upper shell and lower house are welded to connect.
7. the infusion connector according to claim 1 or 6, is characterized in that, described upper shell is connected by ultrasonic bonding with lower house.
8. infusion connector according to claim 1, is characterized in that, the upper end lateral surface of described upper shell is helicitic texture.
9. infusion connector according to claim 1, is characterized in that, the projection across described lower house upper end intracavity bottom is provided with vent (13); Vent (13) communicates with steam vent (14).
10. infusion connector according to claim 1, is characterized in that, described elastic cylinder (17) inside is hollow structure, and outer wall is spring-like helically.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520664894.4U CN205041878U (en) | 2015-08-28 | 2015-08-28 | Infusion of needleless malleation connects |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520664894.4U CN205041878U (en) | 2015-08-28 | 2015-08-28 | Infusion of needleless malleation connects |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205041878U true CN205041878U (en) | 2016-02-24 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520664894.4U Active CN205041878U (en) | 2015-08-28 | 2015-08-28 | Infusion of needleless malleation connects |
Country Status (1)
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| CN (1) | CN205041878U (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105771029A (en) * | 2016-04-29 | 2016-07-20 | 光玲 | Anti-reflux positive pressure device |
| CN106267451A (en) * | 2016-08-23 | 2017-01-04 | 徐俊鸽 | A kind of venous detaining needle |
| CN106730119A (en) * | 2017-02-17 | 2017-05-31 | 河南曙光汇知康生物科技股份有限公司 | A kind of transfusion needleless joint |
| CN107596496A (en) * | 2017-10-31 | 2018-01-19 | 安徽赢创医疗科技有限公司 | Disposable Needleless seal transfusion joint |
| CN107837459A (en) * | 2017-12-11 | 2018-03-27 | 江苏苏云医疗器材有限公司 | Autobarotropy formula band gas discharge connector |
| CN109010990A (en) * | 2018-08-28 | 2018-12-18 | 河南曙光汇知康生物科技股份有限公司 | A kind of novel infusion needleless joint |
| CN111097085A (en) * | 2018-10-25 | 2020-05-05 | 陈戴毅 | Needle-free connector |
| CN113769256A (en) * | 2021-09-07 | 2021-12-10 | 上海必趣医疗科技有限公司 | Closable male luer needleless medical connector |
-
2015
- 2015-08-28 CN CN201520664894.4U patent/CN205041878U/en active Active
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105771029A (en) * | 2016-04-29 | 2016-07-20 | 光玲 | Anti-reflux positive pressure device |
| CN106267451A (en) * | 2016-08-23 | 2017-01-04 | 徐俊鸽 | A kind of venous detaining needle |
| CN106730119A (en) * | 2017-02-17 | 2017-05-31 | 河南曙光汇知康生物科技股份有限公司 | A kind of transfusion needleless joint |
| CN107596496A (en) * | 2017-10-31 | 2018-01-19 | 安徽赢创医疗科技有限公司 | Disposable Needleless seal transfusion joint |
| CN107837459A (en) * | 2017-12-11 | 2018-03-27 | 江苏苏云医疗器材有限公司 | Autobarotropy formula band gas discharge connector |
| CN109010990A (en) * | 2018-08-28 | 2018-12-18 | 河南曙光汇知康生物科技股份有限公司 | A kind of novel infusion needleless joint |
| CN111097085A (en) * | 2018-10-25 | 2020-05-05 | 陈戴毅 | Needle-free connector |
| CN113769256A (en) * | 2021-09-07 | 2021-12-10 | 上海必趣医疗科技有限公司 | Closable male luer needleless medical connector |
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| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |