CN209108277U - A kind of intravenous infusion device - Google Patents
A kind of intravenous infusion device Download PDFInfo
- Publication number
- CN209108277U CN209108277U CN201821743493.8U CN201821743493U CN209108277U CN 209108277 U CN209108277 U CN 209108277U CN 201821743493 U CN201821743493 U CN 201821743493U CN 209108277 U CN209108277 U CN 209108277U
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- Prior art keywords
- valve
- gap
- face
- sealing
- needle
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Abstract
The utility model discloses a kind of intravenous infusion devices, it includes puncture needle, remaining needle and transfusion catheter, remaining needle is installed on outer needle stand, puncture needle is installed on interior needle stand, valve for preventing reverse-flow is also equipped in outer needle stand, valve for preventing reverse-flow includes valve body, 2 opposite sides of valve inner are symmetrically arranged valve plate, 2 valve plate inclinations extend and there are the gaps passed through for puncture needle between the two, end face on valve body where the gap constitutes the valve port end of valve body, valve port end is also equipped with seal assembly, seal assembly includes the sealing shroud for being socketed on valve plate periphery, sealing shroud is equipped with gap corresponding with gap, the opening rubber pad being softened under external force is additionally provided at gap, valve port end is screwed with sealing external cover, sealing external cover has the support through-hole for support sealing shroud, sealing shroud is located on the inside of sealing external cover.The valve port airtight performance of reflux valve is more preferable in the utility model, leaves no gaps its valve port completely after puncture needle extraction, solves the problems, such as blood back flow.
Description
Technical field
The utility model relates to be injected intravenously instrument technical field, especially a kind of intravenous infusion device.
Background technique
In clinical transfusion nursery work, in order to reduce patient's repeatedly puncturing repeatedly in infusion process, reduce patient
Pain and the workload for reducing clinical nursing staff, mostly use the infusion device with venous detaining needle to carry out clinical transfusion.
The structure of venous detaining needle in the prior art generally comprises: puncture needle, remaining needle and transfusion catheter.It uses
When, firstly, puncture needle connection remaining needle is inserted into the injection position of patient by user, then, by puncturing needle guide for indwelling
Needle, which imports patient vessel, stays in remaining needle in patient vessel finally, puncture needle is extracted out, and is fixed with application pad pasting.It uses
When, a perfusion tube is arranged in remaining needle and carries out drop.When nursing staff operates, due to leading to puncture needle after puncture needle extraction
Vacuum chamber is formed between remaining needle, leads to blood back flow phenomenon occur.In order to extract rear defence Hemostatic Oral Liquid adverse current out in puncture needle, in
State's license notification number are as follows: the remaining needle of CN103432682B, valve for preventing reverse-flow, which is arranged, to reach prevents blood back flow phenomenon
Generation.The valve body of its reflux valve is tubular structure, and 2 opposite sides of valve inner are symmetrical arranged valve plate, 2 valve plate sides
With the intersection closed connection of inner wall of rear end and valve body, the front end of 2 valve plates is symmetrically tilted to the direction inside valve body front end, and 2
The front end of valve plate is bonded to each other, and valve body and valve plate contain composition tubular conduit, and the rear end open of tubular conduit is set as valve body
Valve inlet, the front end of tubular conduit are set as the valve outlet of valve body, the front end of the front end wrapping valve plate of valve body, 2 valve plates it is outer
Support plate is fixedly installed between side surface and the inner wall of valve body respectively, the quantity of support plate is one or more.Support plate can be substantially
Degree improves the elastic closure ability of valve port.But the valve for preventing reverse-flow of above structure is in use, can also after puncture needle extraction
There are gap, obturation effect can also be further improved.
Utility model content
A kind of in order to overcome the deficiencies of the prior art, the utility model provides intravenous infusion device, venous transfusion dress
It sets and further design has been carried out for the valve port airtight performance of reflux valve, keep its airtight performance more preferable, make it after puncture needle extraction
Valve port leave no gaps completely, solve the problems, such as blood back flow.
To achieve the goals above, the technical solution adopted in the utility model is: a kind of intravenous infusion device, including punctures
Needle, remaining needle and transfusion catheter, remaining needle are installed on outer needle stand, and puncture needle is installed on interior needle stand, are also pacified in outer needle stand
Equipped with valve for preventing reverse-flow, valve for preventing reverse-flow includes valve body, and 2 opposite sides of valve inner are symmetrically arranged valve plate, 2 valve plate courts
Side and the intersection closed connection of valve interior wall to valve rear end, the inclined end face in the side of 2 valve plates towards valve body front ends is prolonged
It stretches and between two respective inclined end faces of valve plate there are the gap passed through for puncture needle, the end face on valve body where the gap
Constitute the valve port end of valve body, it is characterised in that: the valve port end is also equipped with seal assembly, and seal assembly includes being socketed on outside valve plate
The sealing shroud in week, sealing shroud are equipped with gap corresponding with gap, are additionally provided with the opening being softened under external force at gap
Rubber pad, valve port end are screwed with sealing external cover, and sealing external cover has the support through-hole for support sealing shroud, and sealing shroud is located at close
It seals on the inside of outer cover.
In above structure, after puncture needle exits the gap between two valve plates, by the opening rubber pad on sealing shroud because
External force cancels and its opening is automatically closed to achieve the purpose that valve port is closed completely, and prevents blood back flow.
Further, the sealing shroud includes with apertured ontology end face, and one end of body end facing towards valve plate is equipped with
The annular end edge radially extended, which forms between inner wall and the horizontal wall of ontology end face is embedded cooperation with valve plate end
Mounting groove, annular end forms the step contact surface abutted with outer cover between outer wall and the vertical outer wall of ontology end face, described
The step contact surface on annular end edge is held on the vertical wall and inside horizontal wall of support through-hole in ontology end face insertion support through-hole
Between transition beveled structure on.
In above structure, gap and rubber pad are arranged on the ontology end face of sealing shroud, the annular end of sealing shroud along then with
Sealing external cover cooperation guarantees that the mounting structure of sealing shroud is stable and firm.
Further, the gap two sides of the ontology end face are respectively set independent rubber pad, the respective one end of 2 rubber pads
It is fixedly arranged on corresponding slot sidewall respectively, the opposite one end of 2 rubber pads then overlaps to form in sealing contact up and down.
In above structure, rubber pad is in the corresponding distribution up and down in two sides, the structure setting of intermediate part superposition, when by outer masterpiece
Used time, intersections are open for puncture needle and pass through among 2 rubber pads, when puncture needle is retracted, then the part being opened
It retracts to restore to overlap to form sealing structure.
Further, the side of the body end facing towards valve body front end is equipped with the rubber pad that width is greater than gap, rubber
Pad one end is fixed in body end facing towards the side of valve body front end, and it is another that the rubber pad other end then axially extends to gap along gap
Free end is constituted at side, which is attached on ontology end face, and the length of rubber pad is greater than gap length.
In above structure, rubber pad is also possible to 1, and one end is fixed on ontology end face, and the other end is then free end, from
By forming adhesion contact between end and the gap other end, when external force struts, free end is opened, when external force revocation, free end
Reset the state for restoring closure valve port.
Further, adherency layer of silica gel is equipped on the ontology end face with the free end corresponding position of rubber pad.
In above structure, the setting for adhering to layer of silica gel is to reinforce the close of rubber pad free end and body end face corresponding position
Seal effect.
The utility model is further described with reference to the accompanying drawing.
Detailed description of the invention
Attached drawing 1 is the utility model specific embodiment structure sectional view；
Attached drawing 2 is the first example structure schematic diagram of the utility model valve for preventing reverse-flow；
Attached drawing 3 is the structural schematic diagram after second of embodiment puncture needle of the utility model valve for preventing reverse-flow exits；
Attached drawing 4 is the structural schematic diagram of sealing shroud in second of embodiment of the utility model；
Attached drawing 5 is the schematic enlarged-scale view of the utility model specific embodiment part A；
Attached drawing 6 is the schematic enlarged-scale view of the utility model specific embodiment part B；
Puncture needle 1, remaining needle 2, outer needle stand 3, interior needle stand 4, valve for preventing reverse-flow 5, valve body 51, valve plate 52, gap 53, sealing shroud
6, gap 61, ontology end face 62, annular end are along 63, mounting groove 64, step contact surface 65, rubber pad 7, sealing external cover 8, transition folding
Corner structure 81, support through-hole 82.
Specific embodiment
Specific embodiment of the utility model is intravenous infusion device as shown in Figure 1 comprising puncture needle 1, remaining needle 2 with
And transfusion catheter, remaining needle 2 are installed on outer needle stand 3, puncture needle 1 is installed on interior needle stand 4, is also equipped in outer needle stand 3 anti-
Reflux valve 5, valve for preventing reverse-flow 5 include valve body 51, and 2 opposite sides of 51 inside of valve body are symmetrically arranged 52,2 valve plates of valve plate
52 side and the intersection closed connection of 51 inner wall of valve body towards 51 rear end of valve body, 2 valve plates 52 are towards 51 front end of valve body (in Fig. 1
Arrow direction) the inclined end face in side extend and there are logical for puncture needle 1 between two respective inclined end faces of valve plate 52
The gap 53 crossed, the end face on valve body 51 where the gap 53 constitute the valve port end of valve body 51, which is also equipped with sealing
Component, seal assembly include the sealing shroud 6 for being socketed on 52 periphery of valve plate, and sealing shroud 6 is equipped with gap 61 corresponding with gap 53,
The opening rubber pad being softened under external force is additionally provided at gap 61, valve port end is screwed with sealing external cover 8, sealing external cover 8
With the support through-hole 82 for support sealing shroud 6, sealing shroud 6 is located at the inside of sealing external cover 8, sealing external cover 8 play prevent it is close
The effect that big envelope 6 falls off, above-mentioned sealing shroud 6 include the ontology end face 62 that band has the gap 61, and ontology end face 62 is towards valve plate 52
One end is equipped with the annular end radially extended along 63, which is formed between 63 inner walls and the horizontal wall of ontology end face 62 and valve
52 end of plate is embedded the mounting groove 64 of cooperation, and annular end is formed between 63 outer walls and the vertical outer wall of ontology end face 62 and outer cover
The step contact surface 65 of abutting, ontology end face 62 are embedded in annular end in support through-hole 82 and are held on and hold along 63 step contact surface 65
It holds in the palm on the transition beveled structure 81 between the vertical wall and inside horizontal wall of through-hole 82, guarantees that the mounting structure of sealing shroud 6 is stablized
Securely.
As shown in Fig. 2,5, the first example structure of rubber pad 7 is specifically 61 two sides of gap of ontology end face 62
7,2 respective one end of rubber pad 7 of independent rubber pad are respectively set to be fixedly arranged on respectively on corresponding 61 side wall of gap, 2 rubber pads 7
Opposite one end then overlaps to form in sealing contact up and down.Rubber pad 7 is in the corresponding distribution up and down in two sides, the structure of intermediate part superposition
Setting, when by external force, 2 intermediate intersections of rubber pad 7 are open for puncture needle 1 and pass through, when puncture needle 1 is retracted
When, then the part being opened is retracted to restore to overlap to form sealing structure.
As shown in Fig. 3,4,6, second of example structure of rubber pad 7 be specifically, ontology end face 62 is towards valve body 51
The side of front end is equipped with the rubber pad 7 that width is greater than gap 61, and 7 one end of rubber pad is fixed in ontology end face 62 towards before valve body 51
The side at end, 7 other end of rubber pad then axially extend to composition free end at 61 other side of gap, free end patch along gap 61
It invests on ontology end face 62, the length of rubber pad 7 is greater than 61 length of gap.Ontology end face is fixed in one end of above-mentioned rubber pad 7
On 62, the other end is then free end, forms adhesion contact between 61 other end of free end and gap, when external force struts, freely
End is opened, and when external force revocation, free end resets the state for restoring closure valve port.In order to reinforce 7 free end of rubber pad and ontology
The sealing effect of 62 corresponding position of end face is additionally provided with adherency layer of silica gel with the free end corresponding position of rubber pad on ontology end face 62.
The intravenous infusion device of the utility model, the puncture needle 1 in remaining needle 2 exit the gap between two valve plates 52
After 61, the mesh that valve port is closed completely is reached because its opening is automatically closed in external force revocation by the opening rubber pad 7 on sealing shroud 6
, blood back flow can be prevented, has the effect of highly significant.
The utility model is not limited to above-mentioned specific embodiment, and persons skilled in the art are according to the utility model public affairs
The content opened can be implemented the utility model or all using the utility model using other a variety of specific embodiments
Design structure and thinking, do simple change or change, both fall within the protection scope of the utility model.
Claims (5)
1. a kind of intravenous infusion device, including puncture needle, remaining needle and transfusion catheter, remaining needle are installed on outer needle stand, wear
Pricker is installed on interior needle stand, is also equipped with valve for preventing reverse-flow in outer needle stand, and valve for preventing reverse-flow includes valve body, valve inner it is opposite 2
A side is symmetrically arranged valve plate, side and valve interior wall intersection closed connection of 2 valve plates towards valve rear end, 2 valves
The inclined end face in the side of plate towards valve body front end extends and there are between two respective inclined end faces of valve plate for puncture needle
By gap, the end face on valve body where the gap constitutes the valve port end of valve body, it is characterised in that: the valve port end is also equipped with
Seal assembly, seal assembly include the sealing shroud for being socketed on valve plate periphery, and sealing shroud is equipped with gap corresponding with gap, gap
Place is additionally provided with the opening rubber pad being softened under external force, and valve port end is screwed with sealing external cover, and sealing external cover, which has, to be used for
The support through-hole of support sealing shroud, sealing shroud are located on the inside of sealing external cover.
2. intravenous infusion device according to claim 1, it is characterised in that: the sealing shroud includes with apertured ontology
End face, body end are equipped with the annular end edge radially extended facing towards one end of valve plate, and the annular end is along inner wall and ontology end face
The mounting groove that cooperation is embedded with valve plate end is formed between horizontal wall, annular end is between outer wall and the vertical outer wall of ontology end face
The step contact surface abutted with outer cover is formed, the step contact surface on annular end edge is shelved in the ontology end face insertion support through-hole
On transition beveled structure between the vertical wall and inside horizontal wall of support through-hole.
3. intravenous infusion device according to claim 2, it is characterised in that: the gap two sides of the ontology end face are set respectively
Independent rubber pad is set, respectively one end is fixedly arranged on corresponding slot sidewall 2 rubber pads respectively, the opposite one end of 2 rubber pads
It then overlaps to form up and down in sealing contact.
4. intravenous infusion device according to claim 2, it is characterised in that: the body end facing towards valve body front end one
Side is equipped with the rubber pad that width is greater than gap, and rubber pad one end is fixed in body end facing towards the side of valve body front end, rubber pad
The other end then axially extends to composition free end, the free end at the other side of gap along gap and is attached on ontology end face, rubber
The length of pad is greater than gap length.
5. intravenous infusion device according to claim 4, it is characterised in that: the freedom on the ontology end face with rubber pad
Corresponding position is held to be equipped with adherency layer of silica gel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821743493.8U CN209108277U (en) | 2018-10-25 | 2018-10-25 | A kind of intravenous infusion device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821743493.8U CN209108277U (en) | 2018-10-25 | 2018-10-25 | A kind of intravenous infusion device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209108277U true CN209108277U (en) | 2019-07-16 |
Family
ID=67202366
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821743493.8U Expired - Fee Related CN209108277U (en) | 2018-10-25 | 2018-10-25 | A kind of intravenous infusion device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209108277U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110559510A (en) * | 2019-09-04 | 2019-12-13 | 江西洪达医疗器械集团有限公司 | Remaining needle and assembling process thereof |
| WO2022027261A1 (en) * | 2020-08-05 | 2022-02-10 | 江苏采纳医疗科技有限公司 | Anti-backflow indwelling needle |
-
2018
- 2018-10-25 CN CN201821743493.8U patent/CN209108277U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110559510A (en) * | 2019-09-04 | 2019-12-13 | 江西洪达医疗器械集团有限公司 | Remaining needle and assembling process thereof |
| WO2022027261A1 (en) * | 2020-08-05 | 2022-02-10 | 江苏采纳医疗科技有限公司 | Anti-backflow indwelling needle |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20190716 Termination date: 20201025 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |