CN215900577U - Prevent venous return and keep somewhere needle - Google Patents
Prevent venous return and keep somewhere needle Download PDFInfo
- Publication number
- CN215900577U CN215900577U CN202121752408.6U CN202121752408U CN215900577U CN 215900577 U CN215900577 U CN 215900577U CN 202121752408 U CN202121752408 U CN 202121752408U CN 215900577 U CN215900577 U CN 215900577U
- Authority
- CN
- China
- Prior art keywords
- needle
- positive pressure
- venous return
- pressure valve
- clamp
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
- 238000007789 sealing Methods 0.000 claims abstract description 26
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 16
- 239000010959 steel Substances 0.000 claims abstract description 16
- 230000002265 prevention Effects 0.000 claims abstract description 5
- 238000002955 isolation Methods 0.000 claims abstract description 4
- 230000006835 compression Effects 0.000 claims description 17
- 238000007906 compression Methods 0.000 claims description 17
- 229920003023 plastic Polymers 0.000 claims description 9
- 239000004033 plastic Substances 0.000 claims description 9
- 238000001914 filtration Methods 0.000 claims description 8
- 238000009434 installation Methods 0.000 claims description 6
- 239000000463 material Substances 0.000 claims description 5
- 238000010276 construction Methods 0.000 claims description 2
- 201000002282 venous insufficiency Diseases 0.000 claims 1
- 239000003814 drug Substances 0.000 abstract description 12
- 239000008187 granular material Substances 0.000 abstract description 6
- 210000003462 vein Anatomy 0.000 abstract description 6
- 238000000034 method Methods 0.000 abstract description 5
- 238000002844 melting Methods 0.000 abstract description 3
- 230000008018 melting Effects 0.000 abstract description 3
- 230000007774 longterm Effects 0.000 description 3
- 230000000151 anti-reflux effect Effects 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 238000001990 intravenous administration Methods 0.000 description 1
- 238000010992 reflux Methods 0.000 description 1
- 210000004761 scalp Anatomy 0.000 description 1
Images
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- Infusion, Injection, And Reservoir Apparatuses (AREA)
Abstract
The utility model discloses a vein backflow prevention indwelling needle, which relates to the technical field of medical instruments and comprises a transparent tee joint, an outer sleeve, an isolating plug, a needle holding handle and a steel needle, wherein a shell is arranged at the lower end of the transparent tee joint close to the outer side of the outer sleeve; this structure is in the use, and the effectual pipe clamp centre gripping that will seal of clamping structure is at the isolation stopper surface, prevents that the patient from sealing the touching and not hard up of pipe clamp at the removal in-process, improves the practicality of sealing the pipe clamp, in addition, crosses the filter core in the use, prevents that powdered medicine from not in time melting the phenomenon that leads to the medicine of large granule to block up the steel needle and taking place.
Description
Technical Field
The utility model relates to the technical field of medical instruments, in particular to an anti-venous return indwelling needle.
Background
The application of the vein indwelling needle is a better method for clinical transfusion, on one hand, the pain of the infant caused by repeated puncture of the scalp needle can be relieved, and the vein indwelling needle can be suitable for the adult with long-term transfusion; on the other hand also alleviates clinical nurse's work load, but present anti-venous return keeps somewhere the needle in the use, seals the pipe clamp in the use, and the patient is in the removal in-process or not paying attention to touching the in-process, seals the pipe clamp and takes place to become flexible easily, reduces the practicality of sealing the pipe clamp, in addition to in the use, the phenomenon that powdered medicine does not in time melt and lead to the medicine of large granule to block up the steel needle appears easily, for this reason, the staff in this field has proposed an anti-venous return and has kept somewhere the needle.
SUMMERY OF THE UTILITY MODEL
Aiming at the defects of the prior art, the utility model provides an anti-venous return indwelling needle, which solves the problems of inconvenience in fixation of a tube sealing clamp and medicament injection filtration.
In order to achieve the purpose, the utility model is realized by the following technical scheme: a vein backflow preventing indwelling needle comprises a transparent tee joint, an outer sleeve, an isolating plug, a needle holding handle and a steel needle, wherein a shell is installed at the outer side, close to the outer sleeve, of the lower end of the transparent tee joint, an extension pipe is installed at the other end of the transparent tee joint, a pipe sealing clamp is movably installed at the outer side of the extension pipe, a clamping structure is arranged on the outer surface of one end of the pipe sealing clamp, a positive pressure valve is installed at one end, far away from the transparent tee joint, of the extension pipe, a valve cap is installed at one end of the positive pressure valve, and a filtering structure is arranged on the outer surface of one side of the positive pressure valve;
the clamping structure comprises a fixed rod, a sliding groove is formed in one side of the pipe sealing clamp close to the lower end of the fixed rod, an adjusting rod is movably mounted on the inner side of the sliding groove, a limiting block is mounted at one end, close to the inner side of the sliding groove, of the adjusting rod, a limiting groove is formed in the outer surface of the inner side of the sliding groove, and a compression block is mounted at the lower end of the adjusting rod and inside the sliding groove;
the filter structure comprises a mounting hole, clamping grooves are symmetrically formed in the outer surface of the inner side of the mounting hole, a filter element is movably mounted on the inner side of the mounting hole, and clamping blocks are symmetrically mounted on the outer ring of the filter element.
As a further technical scheme of the utility model, the length of the outer sleeve is greater than that of the steel needle, the cross-sectional area of the outer sleeve is greater than that of the steel needle, the shell is made of plastic materials, and the extension pipe is of a plastic structure.
As a further technical scheme, the sealing pipe clamp is made of plastic materials, the inner side surface of the sealing pipe clamp is of an arc-shaped structure, the positive pressure valve is of a Y-shaped structure, and the positive pressure valve is in spiral connection with the valve cap.
As a further technical scheme of the utility model, the fixing rod is of a quarter-ring structure, the top end reference surface of the fixing rod is higher than that of the tube sealing clamp, the inner side edge of the fixing rod is arc-shaped, and the cross-sectional area of the sliding groove is smaller than that of the tube sealing clamp.
As a further technical scheme, the adjusting rod and the fixed rod are identical in structure, the limiting block is of a rectangular structure, the number of the compression blocks is two, the compression blocks are of cylindrical compression structures, and the adjusting rod drives the limiting block to move up and down along the outer surface of the inner side of the limiting groove.
As a further technical scheme of the utility model, the mounting hole is of a cylindrical structure, the depth of the mounting hole is smaller than that of the positive pressure valve, the clamping groove is of a rectangular structure, and the depth of the clamping groove is smaller than that of the mounting hole.
As a further technical scheme, the filter core is of a cylindrical structure, the filter core is of a hollow structure, the filter core is matched with the mounting hole, the outer surface of the lower end of the fixture block is of an arc structure, and the cross section area of the fixture block is smaller than that of the filter core.
Advantageous effects
The utility model provides a vein reflux prevention indwelling needle, which has the following beneficial effects compared with the prior art:
1. the utility model provides a needle is kept somewhere in anti venous return, the lower extreme that is close to the dead lever through one side of sealing the pipe clamp has seted up the sliding tray, the inboard movable mounting of sliding tray has the regulation pole, the regulation pole is close to the inboard one end of sliding tray and installs the stopper, the spacing groove has been seted up to the inboard surface of sliding tray, the lower extreme of adjusting the pole has the compression piece with the internally mounted of sliding tray, this structure is in the use, adjust the pole through the pulling, make the regulation pole remove along the inboard surface of sliding tray, compress the compression piece simultaneously, the inboard centre gripping of adjusting the pole and dead lever is keeping apart the stopper surface, make the pipe clamp fix the surface at keeping apart the stopper, prevent that the patient from moving the touching and not hard up of in-process sealing the pipe clamp, improve the practicality of sealing the pipe clamp.
2. The utility model provides a needle is kept somewhere in anti-venous return, the draw-in groove has been seted up through the inboard surface symmetry of mounting hole, the inboard movable mounting of mounting hole has the filter core, the fixture block is installed to the outer lane symmetry of filter core, before keeping somewhere the needle and using, it is inboard in the mounting hole to cross the filter core, make the fixture block move along the inboard surface of draw-in groove, until the fixture block is fixed with the draw-in groove inside, it is fixed to cross the filter core installation, thereby in the use, prevent that powdered medicine from not in time melting the phenomenon that leads to the medicine of large granule to block up the steel needle and taking place.
Drawings
FIG. 1 is a schematic view of a structure of an anti-venous return indwelling needle;
FIG. 2 is a disassembled view of an anti-venous return indwelling needle;
FIG. 3 is a schematic view of a seal tube clamp in an anti-reflux venous indwelling needle;
FIG. 4 is a side and cross-sectional view of a catheter clamp in an anti-reflux intravenous catheter;
fig. 5 is a split view of a positive pressure valve and a filtering structure in the anti-venous return indwelling needle.
In the figure: 1. a transparent tee joint; 2. an outer sleeve; 3. an isolation plug; 4. a needle holding handle; 5. a steel needle; 6. a housing; 7. an extension tube; 8. a pipe sealing clamp; 9. a clamping structure; 91. fixing the rod; 92. a sliding groove; 93. adjusting a rod; 94. a limiting block; 95. a limiting groove; 96. compressing the block; 10. a positive pressure valve; 11. a bonnet; 12. a filter structure; 121. mounting holes; 122. a card slot; 123. a filter element; 124. and (7) clamping blocks.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1-5, the present invention provides a technical solution of an anti-venous return indwelling needle: a vein backflow prevention indwelling needle comprises a transparent tee joint 1, an outer sleeve 2, an isolating plug 3, a needle holding handle 4 and a steel needle 5, wherein a shell 6 is installed at the outer side, close to the outer sleeve 2, of the lower end of the transparent tee joint 1, an extension pipe 7 is installed at the other end of the transparent tee joint 1, a sealing pipe clamp 8 is movably installed at the outer side of the extension pipe 7, a clamping structure 9 is arranged on the outer surface of one end of the sealing pipe clamp 8, a positive pressure valve 10 is installed at the end, far away from the transparent tee joint 1, of the extension pipe 7, a valve cap 11 is installed at one end of the positive pressure valve 10, a filtering structure 12 is arranged on the outer surface of one side of the positive pressure valve 10, the clamping structure 9 comprises a fixing rod 91, a sliding groove 92 is formed in the lower end, close to the fixing rod 91, of one side of the sealing pipe clamp 8, an adjusting rod 93 is movably installed on the inner side of the sliding groove 92, a limiting block 94 is installed at one end, a limiting groove 95 is formed in the outer surface of the inner side of the sliding groove 92, a compression block 96 is installed inside the lower end of the adjustment lever 93 and the slide groove 92.
Further, including mounting hole 121 at filtration 12, draw-in groove 122 has been seted up to the inboard surface symmetry of mounting hole 121, the inboard movable mounting of mounting hole 121 has filter core 123, filter core 123's outer lane symmetry installs fixture block 124, the length of outer tube 2 is greater than the length of steel needle 5, the cross-sectional area of outer tube 2 is greater than the cross-sectional area of steel needle 5, shell 6 is made for the plastics material, extension pipe 7 is plastic structure, seal pipe clamp 8 is made for the plastic material, the inboard surface of seal pipe clamp 8 is the arc structure, positive pressure valve 10 is "Y" type structure, be threaded connection between positive pressure valve 10 and the valve cap 11, in clamping structure 9 use, be convenient for keep somewhere the long-term use of needle, wherein filter core 123 is great prevents that the jam phenomenon of the granule medicine that does not melt from taking place steel needle 5.
The dead lever 91 is the quarter ring structure, the top reference surface of dead lever 91 is higher than the top reference surface of sealing tube clamp 8, the inboard edge of dead lever 91 is the arc, the cross-sectional area of sliding tray 92 is less than the cross-sectional area of sealing tube clamp 8, it is the same with the structure of dead lever 91 to adjust pole 93, stopper 94 is the rectangle structure, compression piece 96 is two sets of in quantity, and compression piece 96 is cylinder compression structure, it reciprocates along the inboard surface of spacing groove 95 to adjust pole 93 drive stopper 94, through the pushing down of adjusting pole 93, make compression piece 96 push down, thereby will adjust the pole 93 and attach and keep apart 3 outer ends of stopper, be convenient for the fixed of clamping structure 9, can fix the isolation stopper 3 of different width.
The working principle of the utility model is as follows: when the needle-sealing device is used, a user pulls the adjusting rod 93 through a sliding groove 92 formed in one side of the needle-sealing clamp 8 close to the lower end of the fixing rod 91, an adjusting rod 93 movably mounted on the inner side of the sliding groove 92, a limiting block 94 mounted at one end of the adjusting rod 93 close to the inner side of the sliding groove 92, a limiting groove 95 formed in the outer surface of the inner side of the sliding groove 92, a compression block 96 mounted at the lower end of the adjusting rod 93 and in the sliding groove 92, so that the adjusting rod 93 moves along the outer surface of the inner side of the sliding groove 92, the compression block 96 is compressed at the same time, the inner side of the adjusting rod 93 and the inner side of the fixing rod 91 are clamped on the outer surface of the isolating plug 3, the needle-sealing clamp 8 is fixed on the outer surface of the isolating plug 3, the needle-sealing clamp 8 is prevented from touching and loosening during the movement of a patient, and the use of an indwelling needle is facilitated;
before keeping somewhere the needle and using, the user passes through draw-in groove 122 that the inboard surface symmetry of mounting hole 121 was seted up, the inboard movable mounting's of mounting hole 121 crosses filter core 123, cross the fixture block 124 of the outer lane symmetry installation of filter core 123, it places in mounting hole 121 inboard to cross filter core 123, make fixture block 124 remove along the inboard surface of draw-in groove 122, until fixture block 124 is fixed with draw-in groove 122 inside, it is fixed to install filter core 123, thereby in the use, prevent that powdered medicine from not in time melting the phenomenon that leads to large granule medicine to block up steel needle 5 and taking place, improve the practicality of keeping somewhere the needle.
Claims (7)
1. The utility model provides a needle is kept somewhere in anti-venous return, includes transparent tee bend (1), outer tube (2), isolation stopper (3), holds needle handle (4) and steel needle (5), its characterized in that, shell (6) are installed near the outside of outer tube (2) to the lower extreme of transparent tee bend (1), extension pipe (7) are installed to the other end of transparent tee bend (1), the outside movable mounting of extension pipe (7) has a pipe clamp (8), the one end surface of pipe clamp (8) is provided with clamping structure (9), positive pressure valve (10) are installed to the one end that transparent tee bend (1) was kept away from to extension pipe (7), valve cap (11) are installed to the one end of positive pressure valve (10), one side surface of positive pressure valve (10) is provided with filtration (12);
clamping structure (9) include dead lever (91), sliding tray (92) have been seted up to the lower extreme that one side of seal pipe clamp (8) is close to dead lever (91), the inboard movable mounting of sliding tray (92) has regulation pole (93), it installs stopper (94) to adjust pole (93) to be close to the inboard one end of sliding tray (92), spacing groove (95) have been seted up to the inboard surface of sliding tray (92), the lower extreme of adjusting pole (93) and the internally mounted of sliding tray (92) have compression piece (96).
2. The anti-venous return indwelling needle of claim 1, wherein the length of the outer cannula (2) is greater than the length of the steel needle (5), the cross-sectional area of the outer cannula (2) is greater than the cross-sectional area of the steel needle (5), the housing (6) is made of plastic, and the extension tube (7) is of plastic construction.
3. The venous return prevention indwelling needle of claim 1, wherein the seal clamp (8) is made of plastic material, the inner side surface of the seal clamp (8) is of an arc structure, the positive pressure valve (10) is of a Y-shaped structure, and the positive pressure valve (10) is in threaded connection with the valve cap (11).
4. The anti-venous return indwelling needle of claim 1, wherein the fixing rod (91) is a quarter-ring structure, the top reference surface of the fixing rod (91) is higher than the top reference surface of the tube sealing clamp (8), the inner edge of the fixing rod (91) is arc-shaped, and the cross-sectional area of the sliding groove (92) is smaller than that of the tube sealing clamp (8).
5. The anti-venous return indwelling needle of claim 1, wherein the adjusting rod (93) and the fixing rod (91) have the same structure, the stopper (94) has a rectangular structure, the number of the compression blocks (96) is two, the compression blocks (96) have a cylindrical compression structure, and the adjusting rod (93) drives the stopper (94) to move up and down along the inner outer surface of the stopper groove (95).
6. The anti-venous-reflux indwelling needle according to claim 1, wherein the filtering structure (12) comprises a mounting hole (121), a clamping groove (122) is symmetrically formed in the outer surface of the inner side of the mounting hole (121), a filter core (123) is movably mounted on the inner side of the mounting hole (121), and clamping blocks (124) are symmetrically mounted on the outer ring of the filter core (123);
the installation hole (121) is of a cylindrical structure, the depth of the installation hole (121) is smaller than that of the positive pressure valve (10), the clamping groove (122) is of a rectangular structure, and the depth of the clamping groove (122) is smaller than that of the installation hole (121).
7. The venous return prevention indwelling needle of claim 6, wherein the filter element (123) is of a cylindrical structure, the filter element (123) is of a hollow structure, the filter element (123) is matched with the mounting hole (121), the outer surface of the lower end of the clamping block (124) is of an arc structure, and the cross section area of the clamping block (124) is smaller than that of the filter element (123).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121752408.6U CN215900577U (en) | 2021-07-29 | 2021-07-29 | Prevent venous return and keep somewhere needle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121752408.6U CN215900577U (en) | 2021-07-29 | 2021-07-29 | Prevent venous return and keep somewhere needle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215900577U true CN215900577U (en) | 2022-02-25 |
Family
ID=80290244
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121752408.6U Expired - Fee Related CN215900577U (en) | 2021-07-29 | 2021-07-29 | Prevent venous return and keep somewhere needle |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215900577U (en) |
-
2021
- 2021-07-29 CN CN202121752408.6U patent/CN215900577U/en not_active Expired - Fee Related
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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: 20220225 |