CN204337406U - A kind of anti-reverse streaming no-needle transfusion joint - Google Patents
A kind of anti-reverse streaming no-needle transfusion joint Download PDFInfo
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- CN204337406U CN204337406U CN201420785853.6U CN201420785853U CN204337406U CN 204337406 U CN204337406 U CN 204337406U CN 201420785853 U CN201420785853 U CN 201420785853U CN 204337406 U CN204337406 U CN 204337406U
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- counterflow
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Abstract
The utility model discloses a kind of anti-reverse streaming no-needle transfusion joint, comprise transfusion base, shell and silica gel valve, described transfusion base be provided with the counterflow-preventing spool of liquid passage, the bottom of described counterflow-preventing spool is provided with the counterflow-preventing closeouts keeping the normally closed or opened liquid passage of pressurized of liquid passage, and described counterflow-preventing closeouts is provided with and crosses the liquid pass hole of liquid channel connection.This utility model is on traditional infusion joint, increase the counterflow-preventing spool and counterflow-preventing closeouts that cooperatively interact, counterflow-preventing closeouts pressurized opened liquid passage during transfusion, when infusion pressure is cancelled, counterflow-preventing closeouts kept liquid pathway closure, prevented reverse flow.
Description
Technical field
This utility model relates to the medical no-needle transfusion jointing of a kind of safety, particularly relates to a kind of anti-reverse streaming no-needle transfusion joint.
Background technology
At present, in medicinal, undertaken transfusing blood by venipuncture, to infuse or drug injection is modal method in treatment patient procedure.Need to use calparine cap to carry out the port of closed infusion pipeline in traditional infusion nursing process, need when transfusion, with the rubber blanket connected in the syringe needle puncture calparine cap of transfusion device, the pipeline in insertosome could be communicated with and infuse smoothly.In medical first aid field, usually can run into some situations needing a large amount of quick infusion, when the chemotherapeutics of infusion high viscosity medicinal liquid, need the pressure and the speed that add infusion solutions, common infusion connector just cannot meet the requirement of use.
As a kind of no-needle transfusion joint that the application number patent documentation that is 201320379673.3 provides, comprise transfusion base, shell and silica gel valve, described transfusion base is annular hollow structure, and bottom is provided with the catheter connecting joint for being connected with transfusion catheter; Described silica gel valve is socketed on the medial surface of described shell, and is fixed on the top of described transfusion base by described shell; Described silica gel valve axial centre is provided with the self-enclosed infusion channel of normally off, and the female Luer of transfusion device can be inserted described self-enclosed infusion channel and form the transfusion system be isolated from the outside.
The deficiency of traditional infusion mode is: 1, because infusion process needs to use syringe needle, there is the risk of by mistake stabbing medical personnel, particularly for the patient having infectious disease, greatly will increase the infected risk of medical personnel; 2, rubber blanket generally uses natural rubber to make, and has irritated hidden danger to few patients, easily has chip to drop in transfusion path simultaneously, cause the infection of patient in syringe needle piercing process; 3, in the pressure transfusion process of quick large discharge, medicinal liquid can be accumulated in liquid-transport pipe-line and the vein blood vessel that is connected with human body not yet carry and scatter and the overbottom pressure retained, overbottom pressure can cause medicinal liquid, blood backflow enters liquid-transport pipe-line, cause the malpractice of blood back, plugging, cause corresponding inlying catheter, remaining needle needs the malpractice pulled out in advance, cause multiple injury to patient and increase unnecessary repeated work to medical personnel.
Utility model content
Technical problem to be solved in the utility model is, a kind of anti-reverse streaming no-needle transfusion joint is provided, the connection of pipeline in transfusion device and human body can be completed when not using syringe needle, reduction medical personnel are infected risk because of maloperation, reduce patient infected or cause irritated probability in infusion process, in quick infusion field, stop because transfusion is too fast and occur that medicinal liquid backflows, the malpractice of blood back plugging, and structure is simple, safe and reliable.
The concrete technical scheme that this utility model adopts is as follows:
A kind of anti-reverse streaming no-needle transfusion joint, comprise transfusion base, shell and silica gel valve, described transfusion base be provided with the counterflow-preventing spool of liquid passage, the bottom of described counterflow-preventing spool is provided with the counterflow-preventing closeouts keeping the normally closed or opened liquid passage of pressurized of liquid passage, and described counterflow-preventing closeouts is provided with and crosses the liquid pass hole of liquid channel connection.
This utility model is on traditional infusion joint, increase the counterflow-preventing spool and counterflow-preventing closeouts that cooperatively interact, counterflow-preventing closeouts pressurized opened liquid passage during transfusion, when infusion pressure is cancelled, counterflow-preventing closeouts kept liquid pathway closure, prevented reverse flow.
As improvement, described transfusion base is annular hollow structure, and bottom is provided with the catheter connecting joint for being connected with transfusion catheter, and described casing is located on transfusion base, in transfusion base with shell, form the infusion channel be communicated with.
As improvement, described silica gel valve top is provided with self-enclosed otch, opens the infusion channel described in silica gel valve connection after the otch described in female Luer insertion of transfusion device, and the wall of described otch compresses the outer wall maintenance sealing of female Luer.
Self-enclosed otch still can keep sealing after the repeated multiple times plug of female Luer, prevents antibacterial from entering patient fluid infusion's pipeline, ensures patient fluid infusion's safety.
As improvement, described counterflow-preventing spool rely on silica gel valve and the compressing of transfusion base fixing, be provided with holding tank in the middle part of the end face of described counterflow-preventing spool, cross the bottom that liquid passage bias is communicated with described holding tank, and described to cross liquid passage be circular passage.
The diameter of holding tank is greater than the channel diameter in silica gel valve, has the effect of buffering and point pressure infuser, transfusion is evenly exerted pressure to counterflow-preventing closeouts by circular passage, was convenient to opening of liquid passage.
As improvement, described counterflow-preventing closeouts has support cylindrical shell, and support the elastic ring in cylindrical shell with compressive deformation, the middle part of elastic ring is described liquid pass hole, and elastic ring end face has the sealing member opening or closing described liquid passage excessively; Meanwhile, described sealing member is annular protrusion, is provided with the sealing ring keeping counterflow-preventing spool and counterflow-preventing closeouts to fit tightly outside described annular protrusion.
In this utility model, counterflow-preventing closeouts adopts silica gel to make, and has low compression deformation and elastomeric feature, realizes infusion channel and opens fast and the closedown that resets after pressure release.Annular protrusion is corresponding with the position crossing liquid passage, opened liquid passage after pressurized, and annularly convex surfaces flows to liquid pass hole, and sealing ring can keep the sealing between counterflow-preventing spool and counterflow-preventing closeouts, and prevent from infusing the space rested between the two.
As improvement, in the middle part of described counterflow-preventing spool, be protruding with the sealing station of closed liquid pass hole downwards.
When infusion pressure is cancelled, sealing station props up the marginal position of liquid pass hole, has the effect of closed liquid pass hole, prevents the backflow of medicinal liquid and blood further.
Anti-reverse streaming no-needle transfusion joint of the present utility model is connected with the female Luer of transfusion device by silica gel valve, without the need to using existing needle head structure, can reduce medical personnel because of maloperation infected risk; Carry after the unidirectional infusion function of counterflow-preventing prevents transfusion and occur liquid return blood back plugging phenomenon etc., alleviate the burden of medical personnel; Particularly in pressure transfusion field, when after high-voltage high-speed transfusion, must have the pressure retaining back action in tube for transfusion and connected vein blood vessel, counterflow-preventing no-needle transfusion joint just in time can solve this reflux effect, the phenomenon of medicinal liquid, blood backflow when having stopped high pressure infuser; There is not the possibility that rubber blanket chip drops simultaneously, avoid chip to drop in transfusion path, and cause the infection of patient.
Accompanying drawing explanation
Fig. 1 is the structure chart of anti-reverse streaming no-needle transfusion joint;
Fig. 2 is the structure chart of counterflow-preventing closeouts;
Fig. 3 is the transfusion state figure of anti-reverse streaming no-needle transfusion joint;
Fig. 4 is the counterflow-preventing schematic diagram of anti-reverse streaming no-needle transfusion joint.
Detailed description of the invention
As shown in Figure 1, a kind of anti-reverse streaming no-needle transfusion joint, comprises transfusion base 1, shell 2, silica gel valve 3, counterflow-preventing spool 4 and counterflow-preventing closeouts 5.Transfusion base 1 is annular hollow structure, bottom is provided with the catheter connecting joint for being connected with transfusion catheter, shell 2 is set on transfusion base 1, in transfusion base 1 with shell 2, form the infusion channel be communicated with, silica gel 3, counterflow-preventing spool 4 and counterflow-preventing closeouts 5 are arranged in shell 2 and transfusion base 1.
Silica gel valve 3 top is provided with self-enclosed otch 6, open silica gel valve 3 after the female Luer insertion otch 6 of transfusion device and be communicated with infusion channel, the wall of otch 6 compresses the outer wall maintenance sealing of female Luer, prevents antibacterial from entering patient fluid infusion's pipeline, ensures patient fluid infusion's safety.
Counterflow-preventing spool 4 is made up of hard plastic, and rely on silica gel valve 3 and transfusion base 1 to oppress fixing, be provided with holding tank 7 in the middle part of end face, the bottom of holding tank 7 is communicated with the liquid passage 8 of crossing of annular.
As shown in Figure 2, counterflow-preventing closeouts 5 adopts silica gel to make, and is positioned at the bottom of counterflow-preventing spool 4, and it comprises support cylindrical shell 51, and support the elastic ring 52 that cylindrical shell 51 top is inverted to form compressive deformation, the middle part of elastic ring 52 is liquid pass hole 53.Elastic ring 52 end face is provided with the annular protrusion 54 opening or closing liquid passage, and be provided with the sealing ring 55 keeping counterflow-preventing spool 4 and counterflow-preventing closeouts 5 to fit tightly outside annular protrusion 54, preventing from infusing rests on both gaps.
In addition, be protruding with the sealing station (not marking in figure) of closed liquid pass hole 53 in the middle part of counterflow-preventing spool 4 downwards, when infusion pressure is cancelled, sealing station props up the marginal position of liquid pass hole 53, there is the effect of closed liquid pass hole 53, prevent the backflow of medicinal liquid and blood further.
In the present embodiment, when the female Luer of transfusion device inserts self-enclosed otch 6, form the transfusion system be isolated from the outside; When infusing, the pressure of transfusion effect can open the infusion channel of counterflow-preventing closeouts 5 and counterflow-preventing spool 4 composition, as shown in Figure 3; When infusion pressure is cancelled, counterflow-preventing closeouts 5 and counterflow-preventing spool 4 will be closed and be prevented reverse flow, as shown in Figure 4.
The foregoing is only better implementation example of the present utility model, be not limited to this utility model, all within this utility model spirit and principle, any amendment done, equivalent replacement, improvement etc., all should be included within protection domain of the present utility model.
Claims (9)
1. an anti-reverse streaming no-needle transfusion joint, comprise transfusion base, shell and silica gel valve, it is characterized in that, described transfusion base be provided with the counterflow-preventing spool of liquid passage, the bottom of described counterflow-preventing spool is provided with the counterflow-preventing closeouts keeping the normally closed or opened liquid passage of pressurized of liquid passage, and described counterflow-preventing closeouts is provided with and crosses the liquid pass hole of liquid channel connection.
2. anti-reverse streaming no-needle transfusion joint as claimed in claim 1, it is characterized in that, described transfusion base is annular hollow structure, bottom is provided with the catheter connecting joint for being connected with transfusion catheter, described casing is located on transfusion base, in transfusion base with shell, form the infusion channel be communicated with.
3. anti-reverse streaming no-needle transfusion joint as claimed in claim 2, it is characterized in that, described silica gel valve top is provided with self-enclosed otch, open the infusion channel described in silica gel valve connection after the otch described in female Luer insertion of transfusion device, the wall of described otch compresses the outer wall maintenance sealing of female Luer.
4. anti-reverse streaming no-needle transfusion joint as claimed in claim 1, it is characterized in that, described counterflow-preventing spool relies on silica gel valve and the compressing of transfusion base to fix, and is provided with holding tank, crosses the bottom that liquid passage bias is communicated with described holding tank in the middle part of the end face of described counterflow-preventing spool.
5. anti-reverse streaming no-needle transfusion joint as claimed in claim 4, is characterized in that, described liquid passage is excessively circular passage.
6. anti-reverse streaming no-needle transfusion joint as claimed in claim 1, it is characterized in that, described counterflow-preventing closeouts has support cylindrical shell, support the elastic ring in cylindrical shell with compressive deformation, the middle part of elastic ring is described liquid pass hole, and elastic ring end face has the sealing member opening or closing described liquid passage excessively.
7. anti-reverse streaming no-needle transfusion joint as claimed in claim 6, it is characterized in that, described sealing member is annular protrusion.
8. anti-reverse streaming no-needle transfusion joint as claimed in claim 7, is characterized in that, is provided with the sealing ring keeping counterflow-preventing spool and counterflow-preventing closeouts to fit tightly outside described annular protrusion.
9. anti-reverse streaming no-needle transfusion joint as claimed in claim 1, is characterized in that, be protruding with the sealing station of closed liquid pass hole in the middle part of described counterflow-preventing spool downwards.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420785853.6U CN204337406U (en) | 2014-12-12 | 2014-12-12 | A kind of anti-reverse streaming no-needle transfusion joint |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420785853.6U CN204337406U (en) | 2014-12-12 | 2014-12-12 | A kind of anti-reverse streaming no-needle transfusion joint |
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| Publication Number | Publication Date |
|---|---|
| CN204337406U true CN204337406U (en) | 2015-05-20 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420785853.6U Active CN204337406U (en) | 2014-12-12 | 2014-12-12 | A kind of anti-reverse streaming no-needle transfusion joint |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106390221A (en) * | 2016-07-11 | 2017-02-15 | 欧阳小青 | Medical push-pull type needless infusion connector |
| CN106421999A (en) * | 2016-07-11 | 2017-02-22 | 欧阳小青 | Medical spiral needleless transfusion joint |
| CN110201298A (en) * | 2019-07-03 | 2019-09-06 | 深圳安特医疗股份有限公司 | Check valve and infusion device |
-
2014
- 2014-12-12 CN CN201420785853.6U patent/CN204337406U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106390221A (en) * | 2016-07-11 | 2017-02-15 | 欧阳小青 | Medical push-pull type needless infusion connector |
| CN106421999A (en) * | 2016-07-11 | 2017-02-22 | 欧阳小青 | Medical spiral needleless transfusion joint |
| CN110201298A (en) * | 2019-07-03 | 2019-09-06 | 深圳安特医疗股份有限公司 | Check valve and infusion device |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |