CN217793970U - Novel indwelling needle capable of preventing blood return - Google Patents
Novel indwelling needle capable of preventing blood return Download PDFInfo
- Publication number
- CN217793970U CN217793970U CN202122435917.2U CN202122435917U CN217793970U CN 217793970 U CN217793970 U CN 217793970U CN 202122435917 U CN202122435917 U CN 202122435917U CN 217793970 U CN217793970 U CN 217793970U
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- sealing plug
- needle
- screw cap
- blood return
- pipe
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Abstract
The utility model provides a prevent to return novel needle of keeping somewhere of blood, including the tee bend, the pipe, the sealing plug, hold the needle handle, the steel needle, the extension pipe, heparin cap and malleation joint, three-way one end is worn out and the connection is equipped with the screw cap to sealing plug one end, the screw cap inside wall is equipped with screw thread one, screw cap inside wall edge integrated into one piece is equipped with spacing snap ring, one side outer wall that the tee bend is close to the screw cap is equipped with screw thread two with screw thread one matched with, tee bend outer wall middle part integrated into one piece is equipped with spacing draw-in groove with spacing snap ring matched with, one side that the pipe was kept away from to the sealing plug is equipped with mounting groove, the inside fixture block that is equipped with of mounting groove, the fixture block is connected on one side and is equipped with the connecting block, the screw cap just is located mounting groove notch edge and is equipped with the through-hole, the connecting block other end is worn out the through-hole and is connected with holding the needle handle, steel needle one end is passed the sealing plug and is pegged graft with the fixture block. Compared with the prior art, the utility model the advantage lies in: the physical method is adopted, and the movement in the sealing plug net is utilized to cut off the blood return path, so that the blood return is effectively prevented.
Description
Technical Field
The utility model relates to the technical field of metallurgical equipment, in particular to metallurgical submerged arc furnace pusher.
Background
Existing research on indwelling needle for preventing blood return
1, a forward positive pressure force is formed by adopting a fitting or protective bandage to prevent blood return. Clinically, the limb movement of a patient, blood flow in blood vessels, pressure change, obvious blood return of an indwelling needle and poor effect.
2. The positive pressure connector is used, the single-way guiding and the retaining clip are used, and due to the change of the pressure of the blood vessel, liquid in the retaining needle can also enter the blood vessel to form negative pressure, so that blood returns.
3. Some designs prevent back blood cover in hose front end design, keep somewhere needle hose material itself very soft, improper operation when pulling out the needle, the hose also can drop in the blood vessel, increases at the hose front end and prevents back blood cover, prevents that back blood cover drops the blood vessel more easily, causes the loss that is difficult to retrieve for patient.
4. The one-way guide that designs at indwelling needle hose front end leads to, can prevent the blood backward flow, but can increase the puncture point friction, causes the puncture point to bleed, perhaps the liquid medicine oozes, shortens greatly for indwelling needle live time.
SUMMERY OF THE UTILITY MODEL
To the above-mentioned not enough among the prior art, the utility model provides a prevent blood return's novel needle of keeping somewhere, including tee bend, pipe, sealing plug, hold needle handle, steel needle, extension tube and heparin cap, tee bend one end is the integrated into one piece structure with the pipe, extension tube one end is connected with tee bend one end, the extension tube other end is connected with the malleation articulate, heparin cap one end is connected with one side that the extension tube is close to the malleation and connects, sealing plug one end is worn out tee bend one end and is equipped with the screw cap in the connection, the screw cap inside wall is equipped with screw thread one, screw cap inside wall edge integrated into one piece is equipped with spacing snap ring, one side outer wall that the tee bend is close to the screw cap is equipped with screw thread one matched with two, tee bend outer wall middle part integrated into one piece is equipped with the spacing draw-in groove with spacing snap ring matched with, one side that the pipe was kept away from is equipped with the installation draw-in groove, the inside fixture block that is equipped with of installation draw-in groove, fixture block one side connection is equipped with the connecting block, the screw cap just is located installation draw-in groove notch edge and is equipped with the through-hole, the through-hole is worn out to the connecting block other end and is connected with holding needle handle, fixture block is passed through with the sealing plug, steel needle handle, the sealing plug is passed to one end.
As an improvement: the sealing plug is located inside the tee joint and is in pressing contact with the side wall of the tee joint.
As an improvement: the sealing plug and the clamping block are made of elastic materials.
As an improvement: the inner side wall of one end of the tee joint connected with the guide pipe is of an arc-shaped structure.
As an improvement: the end, located at the connection end of the matching tee joint and the guide pipe, of the sealing plug is of an arc-shaped structure matched with the arc-shaped inner side wall of the tee joint.
Compared with the prior art, the utility model the advantage lies in: the physical method is adopted, the movement in the sealing plug net is utilized, the blood return path is cut off, the blood return is effectively prevented, the sealing plug is screwed outwards, the transfusion channel can be recovered, the traditional hemostatic clamp of the indwelling needle can be directly cancelled, and the design is simple, economic and effective. The puncture flow of the medical staff is not changed, and the step of closing the hemostatic clamp after the indwelling needle seals the tube is changed into the action of screwing the sealing plug forwards, so that the tube sealing can be completed.
Drawings
FIG. 1 is a schematic structural view of a novel indwelling needle for preventing blood return of the present invention;
FIG. 2 is a schematic view of a three-way structure of a novel indwelling needle for preventing blood return;
FIG. 3 is a schematic view of the internal structure of the screw cap of the novel indwelling needle for preventing blood return;
reference symbol comparison table:
1. a tee joint; 2. a conduit; 3. a sealing plug; 4. a screw cap; 5. a first thread; 6. a limit snap ring; 7. a second thread; 8. a limiting clamping groove; 9. a needle holding handle; 10. a clamping block; 11. installing a clamping groove; 12. a through hole; 13. a steel needle; 14. an extension tube; 15. a heparin cap; 16. a positive pressure joint; 17. and (4) connecting the blocks.
Detailed Description
The following describes the present invention with reference to the accompanying drawings.
As shown in fig. 1-3, a novel indwelling needle for preventing blood return comprises a tee joint 1, a catheter 2, a sealing plug 3, a needle holding handle 9, a steel needle 13, an extension tube 14 and a heparin cap 15, wherein one end of the tee joint 1 is of an integrally formed structure with the catheter 2, one end of the extension tube 14 is connected with one end of the tee joint 1, the other end of the extension tube 14 is connected with a positive pressure joint 16, one end of the heparin cap 15 is connected with one side of the extension tube 14 close to the positive pressure joint 16, one end of the sealing plug 3 penetrates out of one end of the tee joint 1 and is connected with a screw cap 4, the inner side wall of the screw cap 4 is provided with a first thread 5, the edge of the inner side wall of the screw cap 4 is provided with a second thread 7 matched with the first thread 5, one end of the tee joint 1, the middle portion of the outer wall of the tee joint 1 is integrally formed with a limiting clamping groove 8 matched with the first thread 6, one side of the sealing plug 3, which is far away from the catheter 2 is provided with an installation clamping groove 11, a clamping block 10 is arranged inside the installation clamping groove 11 is arranged inside the installation clamping block 10, one side of the clamping block 10 is connected with a connecting block 17, the screw cap 4 is arranged at one side of the edge and is located at the other end of the through hole 12, the through hole of the steel cap 11, the through hole 12 penetrates out of the through hole of the through hole 12, and the needle holding handle 13 of the needle holding handle 13.
The sealing plug 3 is positioned inside the tee joint 1 and is in compression contact with the side wall of the tee joint 1.
The sealing plug 3 and the fixture block 10 are made of elastic materials.
The inner side wall of one end of the tee joint 1 connected with the guide pipe 2 is of a circular arc structure.
And one end of the sealing plug 3, which is positioned at the connection end of the matching tee joint 1 and the guide pipe 2, is of an arc-shaped structure matching the arc-shaped inner side wall of the tee joint 1.
When the utility model is implemented specifically, the steel needle 13 is connected with the clamping block 10, the sealing plug 3 and the clamping block 10 are made of elastic materials, after the steel needle 13 and the catheter 2 are inserted into the blood vessel of a patient, a nurse fixes the tee joint 1 by one hand, the other hand pulls the needle handle 9, the clamping block 10 is pulled out from the installation clamping groove 11 by the connecting block 17 on one side of the needle handle 9, thereby driving the steel needle 13 to be pulled out from the catheter 2, the sealing plug 3 is made of elastic materials, the sealing state can still be kept after the steel needle 13 is pulled out, the patient carries out transfusion, after the transfusion is finished, the nurse fixes the tee joint 1 by one hand, the screw cap 4 is screwed by the other hand, the screw cap 4 is matched with the screw thread I5 on the inner side wall of the screw cap 4 and the screw thread II 7 on the outer side of the tee joint 1, the screw cap 4 moves towards the catheter 2 along the outer wall of the tee joint 1, the sealing plug 3 is pushed to move towards the catheter 2 by the screw cap 4, when the limiting snap ring 6 at the edge of the inner side of the spiral cap 4 is clamped into the limiting clamping groove 8, the sealing plug 3 of the remaining needle cannot fall off and is always in a sealing state, the catheter 2 and the extension tube 14 are isolated by the sealing plug 3 at the moment, blood return is prevented, the infusion tube is taken down from the heparin cap 15, a patient can move freely, when infusion is needed again, the infusion tube is only connected with the positive pressure connector 16, one hand of a nurse fixes the tee joint 1, the other hand twists the spiral cap 4 in the opposite direction to the blood return prevention and is matched with the force of pulling outwards, the limiting snap ring 6 is pulled out of the limiting clamping groove 8 by certain pulling force, and then the sealing plug 3 moves towards the direction away from the catheter 2 by matching the first thread 5 on the inner side wall of the spiral cap 4 with the second thread 7 on the outer side of the tee joint 1, so that the catheter 2 and the extension tube 14 are in a conducting state, and (5) carrying out transfusion.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not intended to limit the present invention, and all modifications, equivalents, improvements and the like that are made within the spirit and principles of the present invention are intended to be included within the scope of the present invention.
Claims (5)
1. The utility model provides a prevent novel needle of keeping somewhere of blood return, includes tee bend (1), pipe (2), sealing plug (3), holds needle handle (9), steel needle (13), extension pipe (14), heparin cap (15) and malleation joint (16), tee bend (1) one end and pipe (2) are integrated into one piece structure, extension pipe (14) one end is connected with tee bend (1) one end, the extension pipe (14) other end is connected with malleation joint (16), heparin cap (15) one end is connected its characterized in that with one side that extension pipe (14) are close to malleation joint (16): sealing plug (3) one end is worn out tee bend (1) one end and is connected and be equipped with screw cap (4), screw cap (4) inside wall is equipped with screw thread (5), screw cap (4) inside wall edge integrated into one piece is equipped with spacing snap ring (6), one side outer wall that tee bend (1) is close to screw cap (4) is equipped with screw thread (5) matched with two (7), tee bend (1) outer wall middle part integrated into one piece is equipped with spacing draw-in groove (8) with spacing snap ring (6) matched with, one side that pipe (2) was kept away from in sealing plug (3) is equipped with installation clamping groove (11), installation clamping groove (11) inside is equipped with fixture block (10), fixture block (10) one side is connected and is equipped with connecting block (17), screw cap (4) just are located installation clamping groove (11) notch edge and are equipped with through-hole (12), connecting block (17) other end is worn out through-hole (12) and is connected with needle handle (9), steel needle (13) one end is passed sealing plug (3) and is pegged graft with fixture block (10).
2. The novel indwelling needle for preventing blood return according to claim 1, wherein: the sealing plug (3) is positioned in the tee joint (1) and is in extrusion contact with the side wall of the tee joint (1).
3. The novel indwelling needle for preventing blood return according to claim 1, wherein: the sealing plug (3) and the fixture block (10) are made of elastic materials.
4. The novel indwelling needle for preventing blood return according to claim 1, wherein: the inner side wall of one end of the tee joint (1) connected with the guide pipe (2) is of an arc-shaped structure.
5. The novel indwelling needle for preventing blood return according to claim 4, wherein: and one end of the sealing plug (3) which is positioned at the connection end of the matching tee joint (1) and the guide pipe (2) is of an arc-shaped structure matching the arc-shaped inner side wall of the tee joint (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122435917.2U CN217793970U (en) | 2021-10-09 | 2021-10-09 | Novel indwelling needle capable of preventing blood return |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122435917.2U CN217793970U (en) | 2021-10-09 | 2021-10-09 | Novel indwelling needle capable of preventing blood return |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217793970U true CN217793970U (en) | 2022-11-15 |
Family
ID=83958993
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122435917.2U Active CN217793970U (en) | 2021-10-09 | 2021-10-09 | Novel indwelling needle capable of preventing blood return |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217793970U (en) |
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2021
- 2021-10-09 CN CN202122435917.2U patent/CN217793970U/en active Active
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