CN217014932U - Venous indwelling needle capable of preventing blood from flowing back - Google Patents
Venous indwelling needle capable of preventing blood from flowing back Download PDFInfo
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- CN217014932U CN217014932U CN202123326938.7U CN202123326938U CN217014932U CN 217014932 U CN217014932 U CN 217014932U CN 202123326938 U CN202123326938 U CN 202123326938U CN 217014932 U CN217014932 U CN 217014932U
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Abstract
The utility model discloses a venous indwelling needle for preventing blood backflow, which comprises a three-way pipe, wherein one end of the three-way pipe is connected with an extension pipe, a connecting plate is sleeved on the surface of the extension pipe, a bottom plate is arranged at the bottom of the connecting plate, and a clamping component is arranged at the top of the bottom plate; the joint subassembly includes the diaphragm, the stripper plate, two first springs, two joint pieces, two risers and two second springs, the diaphragm is installed through the pivot at the top of connecting plate, the bottom of diaphragm is provided with the stripper plate, the stripper plate is located the diaphragm and keeps away from the one end of connecting plate, two shifting chutes have been seted up to the inside of stripper plate, the equal level in inside of two shifting chutes is provided with first spring, the shifting chute is all extended to the one end of two first springs, the vertical two risers that are provided with in top of bottom plate, the one end of connecting plate is kept away from to two risers all being located the bottom plate, the stripper plate is located between two risers, all seted up on two risers with two first spring assorted joint grooves. Thus greatly improving the working efficiency of nurses.
Description
Technical Field
The utility model relates to the field of indwelling needles, in particular to a venous indwelling needle for preventing blood backflow.
Background
The venous indwelling needle consists of a stainless steel core, a soft outer sleeve and a plastic needle seat. An infusion tool for puncturing a blood vessel with an outer cannula and a stylet during puncture, withdrawing the stylet after the cannula is fed into the blood vessel, and only leaving the soft outer cannula in the blood vessel for infusion. The venous indwelling needle is used for intermittent, continuous or daily venous transfusion treatment. The use of scalp needles should be limited to short-term or single dose administration, collection of blood samples or infusion of blood, blood products, hemodynamic monitoring, infusion of fluids at or near isotonic, normal PH range (irritant drugs: only intermittent bolus injections).
Prevent the vein of blood backward flow and keep somewhere needle when using among the prior art, connect the pulsed injection tube sealing liquid through the malleation to promote the clip and be close to toward the person's of connecing hand department, inject the time of injection and close the clip simultaneously, form the malleation, avoid blood return and formation thrombus, but the clip on the extension pipe is opened and is died comparatively troublesome with the clamp, seriously delays nurse's time.
SUMMERY OF THE UTILITY MODEL
The utility model provides a venous indwelling needle capable of preventing blood backflow, which solves the problems that in the prior art, a clamp on an extension tube of the venous indwelling needle is troublesome to open and clamp, and time of a nurse is delayed seriously.
In order to achieve the purpose, the utility model provides the following technical scheme: a venous indwelling needle for preventing blood backflow comprises a three-way pipe, wherein one end of the three-way pipe is connected with an extension pipe, a connecting plate is sleeved on the surface of the extension pipe, a bottom plate is arranged at the bottom of the connecting plate, and a clamping assembly is arranged at the top of the bottom plate;
the clamping component comprises a transverse plate, an extrusion plate, two first springs, two clamping blocks, two vertical plates and two second springs, the transverse plate is installed at the top of the connecting plate through a rotating shaft, the extrusion plate is arranged at the bottom of the transverse plate and is positioned at one end, away from the connecting plate, of the transverse plate, two moving grooves are formed in the extrusion plate, the first springs are horizontally arranged in the two moving grooves, one ends of the two first springs extend out of the moving grooves, the two vertical plates are vertically arranged at the top of the bottom plate and are positioned at one ends, away from the connecting plate, of the bottom plate, the extrusion plate is positioned between the two vertical plates, clamping grooves matched with the two first springs are formed in the two vertical plates, the two second springs are vertically installed at the top of the bottom plate, two the second spring is kept away from the one end of bottom plate all with the bottom of diaphragm is connected.
Preferably, a guide pipe is arranged at one end of the three-way pipe, an isolation plug is arranged at one end, far away from the guide pipe, of the three-way pipe, a steel needle is arranged on one side, far away from the guide pipe, of the isolation plug, the isolation plug and the guide pipe are penetrated through by one end, close to the three-way pipe, of the steel needle, and a needle holding handle is arranged on the surface of the steel needle.
Preferably, a pipe sleeve is sleeved on the surface of one end, far away from the isolating plug, of the three-way pipe, and the pipe sleeve is sleeved on the surface of the guide pipe.
Preferably, one end of the extension pipe, which is far away from the three-way pipe, is connected with a positive pressure joint, one end of the positive pressure joint, which is far away from the extension pipe, is connected with a heparin cap, and one side of the positive pressure joint is provided with an end cap.
Preferably, the three-way pipe, the extension pipe and the pipe sleeve are all semitransparent.
The utility model has the beneficial effects that: when the extension pipe needs to be sealed, the transverse plate is pressed, the transverse plate drives the extrusion plate to move downwards and the two second springs to contract under the action of the rotating shaft, the extrusion plate drives the two first springs to drive the two clamping blocks to move downwards when beginning to move, the two clamping blocks move towards the corresponding moving grooves and extrude the two first springs under the action of the two vertical plates, the extrusion plate is contacted with the top of the extension pipe and slowly extrudes the extension pipe to deform the extension pipe when continuing to move, the two clamping blocks correspond to the two clamping grooves at the moment when the extension pipe is sealed by the extrusion plate, the two clamping blocks penetrate through the two clamping grooves under the action of the two first springs, the hand pressing the transverse plate is released, and the two clamping blocks are attached to the inner walls of the clamping grooves under the action of the elastic force of the two second springs, when extension pipe was opened to needs, two joint pieces of follow both sides extrusion to joint inslot portion for two joint pieces remove to the inside of two shifting chutes, and under the effect of two second springs, the device resets, has realized sealing and opening the quick of extension pipe, has improved nurse's work efficiency greatly.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the embodiments or the prior art descriptions will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and other drawings can be obtained by those skilled in the art without creative efforts.
FIG. 1 is a schematic view of the overall structure of a venous indwelling needle for preventing blood backflow according to the present invention;
FIG. 2 is a partial view showing the structure of a locking assembly of an intravenous needle for preventing the backflow of blood according to the present invention;
fig. 3 is a schematic view of the internal structure of the venous indwelling needle at the position a in fig. 2 for preventing backflow of blood according to the present invention.
In the figure: 1. a three-way pipe; 2. an extension tube; 3. a connecting plate; 4. a base plate; 5. a transverse plate; 6. a pressing plate; 7. a first spring; 8. a clamping block; 9. a vertical plate; 10. a clamping groove; 11. a second spring; 12. a conduit; 13. an isolation plug; 14. a steel needle; 15. a needle holding handle; 16. pipe sleeve; 17. a positive pressure joint; 18. a heparin cap; 19. and an end cap.
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. 1-3, a venous indwelling needle for preventing blood backflow comprises a three-way pipe 1, wherein one end of the three-way pipe 1 is connected with an extension pipe 2, a connecting plate 3 is sleeved on the surface of the extension pipe 2, a bottom plate 4 is arranged at the bottom of the connecting plate 3, and a clamping component is arranged at the top of the bottom plate 4 and is used for realizing quick sealing and opening of the extension pipe 2 through the clamping component, so that the working efficiency of a nurse is greatly improved.
The clamping assembly comprises a transverse plate 5, an extrusion plate 6, two first springs 7, two clamping blocks 8, two vertical plates 9 and two second springs 11, the transverse plate 5 is installed at the top of the connecting plate 3 through a rotating shaft, the extrusion plate 6 is arranged at the bottom of the transverse plate 5, the extrusion plate 6 is positioned at one end of the transverse plate 5, which is far away from the connecting plate 3, two moving grooves are formed in the extrusion plate 6, the first springs 7 are horizontally arranged in the two moving grooves, one ends of the two first springs 7 extend out of the moving grooves, the two vertical plates 9 are vertically arranged at the top of the bottom plate 4, the two vertical plates 9 are positioned at one ends of the bottom plate 4, which are far away from the connecting plate 3, the extrusion plate 6 is positioned between the two vertical plates 9, clamping grooves 10 matched with the two first springs 7 are formed in the two vertical plates 9, the two second springs 11 are vertically arranged at the top of the bottom plate 4, one ends of the two second springs 11, which are far away from the bottom plate 4, are connected with the bottom of the transverse plate 5, the sealing device has the effects that when the extension pipe 2 needs to be sealed, the transverse plate 5 is pressed, the transverse plate 5 drives the extrusion plate 6 to move downwards and the two second springs 11 to contract under the action of the rotating shaft, the extrusion plate 6 drives the two first springs 7 to drive the two clamping blocks 8 to move downwards when beginning to move, the two clamping blocks 8 move towards the corresponding moving grooves and extrude the two first springs 7 under the action of the two vertical plates 9, the extrusion plate 6 is contacted with the top of the extension pipe 2 when continuing to move and slowly extrudes the extension pipe 2 to deform the extension pipe 2, when the extension pipe 2 is sealed by the extrusion plate 6, the positions of the two clamping blocks 8 correspond to the positions of the two clamping grooves 10, the two clamping blocks 8 penetrate through the two clamping grooves 10 under the action of the two first springs 7, and the hand for pressing the transverse plate 5 is released, under the effect of two second spring 11 elasticity, make two joint pieces 8 and the laminating of joint groove 10 inner wall, when extension pipe 2 is opened to needs, from both sides to two joint pieces 8 of joint inslot portion extrusion, make two joint pieces 8 remove to the inside of two shifting chutes, under the effect of two second springs 11, the device resets, has realized closing fast and opening extension pipe 2, has improved nurse's work efficiency greatly.
One end of the three-way pipe 1 is provided with a guide pipe 12, one end of the three-way pipe 1, which is far away from the guide pipe 12, is provided with an isolation plug 13, one side of the isolation plug 13, which is far away from the guide pipe 12, is provided with a steel needle 14, one end of the steel needle 14, which is close to the three-way pipe 1, penetrates through the isolation plug 13 and the guide pipe 12, the surface of the steel needle 14 is provided with a needle holding handle 15, the effect of the steel needle is that the isolation plug 13 is pulled through the needle holding handle 15, and the isolation plug 13 drives the steel needle 14 to be taken out.
The pipe sleeve 16 is sleeved on the surface of one end, away from the isolating plug 13, of the three-way pipe 1, the pipe sleeve 16 is sleeved on the surface of the guide pipe 12, the function of the three-way pipe is that the guide pipe 12 and the steel needle 14 are sealed through the pipe sleeve 16, and the guide pipe 12 and the steel needle 14 are prevented from being infected by external microorganisms.
The pipe sleeve 16 of the three-way pipe 1 and the extension pipe 2 is semitransparent, and therefore nurses can observe the device conveniently.
The working principle and the using process of the utility model are as follows: when the device is used, a nurse firstly prepares for work, such as hand disinfection and placement of an infusion bottle, the steel needle 14 punctures the skin at an angle of fifteen to thirty degrees, after blood returns, the angle is reduced, and then the steel needle 14 and the catheter 12 are pushed to puncture two to five millimeters. The patient is instructed to make a fist, tighten the skin in the left hand, and clamp the needle 14 of the catheter needle with the thumb and forefinger in the right hand. Fixing the three-way pipe 1 by the right hand, pulling out the steel needle 14 by the left hand, feeding the catheter 12 into the vein by the left hand, loosening and pressing the tourniquet, ordering the patient to loosen the fist, drawing out the steel needle 14 by holding the needle handle 15, fixing the three-way pipe 1 by a special application, writing the name, the remaining date and time of the patient on the application, fixing the extension pipe 2 by an adhesive tape, taking down the heparin cap 18, injecting a catheter sealing liquid in a pulse mode through the positive pressure joint 17, pushing the clamping component to approach the three-way pipe 1, pressing the transverse plate 5 on one side when the injection is almost performed, driving the injection extrusion plate 6 to move downwards and the two second springs 11 to contract by the transverse plate 5 under the action of the rotating shaft, driving the two first springs 7 to drive the two clamping blocks 8 to move downwards when the extrusion plate 6 just starts to move, driving the two clamping blocks 8 to move downwards under the action of the two vertical plates 9, enabling the two clamping blocks 8 to move towards the corresponding moving groove and extrude the two first springs 7, when 6 continuation removals of stripper plate, with the top contact of extension pipe 2, and slowly extrude extension pipe 2, make extension pipe 2 warp, when stripper plate 6 makes extension pipe 2 sealed, two joint piece 8 positions are corresponding with two joint groove 10 positions this moment, under the effect of two first springs 7, make two joint pieces 8 run through two joint grooves 10, loosen the hand of pressing down diaphragm 5, under the effect of two second springs 11 elasticity, make two joint pieces 8 and the laminating of joint groove 10 inner wall, the malleation sealed tube has been realized, avoid blood return and formation thrombus.
The foregoing shows and describes the general principles, essential features, and advantages of the utility model. It should be understood by those skilled in the art that the present invention is not limited to the above embodiments, and the above embodiments and descriptions are only preferred examples of the present invention and are not intended to limit the present invention, and that various changes and modifications may be made without departing from the spirit and scope of the present invention, which fall within the scope of the claimed invention. The scope of the utility model is defined by the appended claims and equivalents thereof.
Claims (5)
1. The venous indwelling needle capable of preventing blood backflow is characterized by comprising a three-way pipe (1), wherein one end of the three-way pipe (1) is connected with an extension pipe (2), a connecting plate (3) is sleeved on the surface of the extension pipe (2), a bottom plate (4) is arranged at the bottom of the connecting plate (3), and a clamping assembly is arranged at the top of the bottom plate (4);
the clamping assembly comprises a transverse plate (5), an extrusion plate (6), two first springs (7), two clamping blocks (8), two vertical plates (9) and two second springs (11), the transverse plate (5) is installed at the top of the connecting plate (3) through a rotating shaft, the extrusion plate (6) is arranged at the bottom of the transverse plate (5), the extrusion plate (6) is positioned at one end, far away from the connecting plate (3), of the transverse plate (5), two moving grooves are formed in the extrusion plate (6), the first springs (7) are horizontally arranged in the two moving grooves, one ends of the two first springs (7) extend out of the moving grooves, the two vertical plates (9) are vertically arranged at the top of the bottom plate (4), and the two vertical plates (9) are positioned at one end, far away from the connecting plate (3), of the bottom plate (4), stripper plate (6) are located two between riser (9), two all seted up on riser (9) with two first spring (7) assorted joint groove (10), the vertical two of installing in top of bottom plate (4) second spring (11), two second spring (11) are kept away from the one end of bottom plate (4) all with the bottom of diaphragm (5) is connected.
2. The venous indwelling needle for preventing blood backflow according to claim 1, wherein a catheter (12) is arranged at one end of the three-way pipe (1), an isolating plug (13) is arranged at one end of the three-way pipe (1) far away from the catheter (12), a steel needle (14) is arranged on one side of the isolating plug (13) far away from the catheter (12), one end of the steel needle (14) close to the three-way pipe (1) penetrates through the isolating plug (13) and the catheter (12), and a needle holding handle (15) is arranged on the surface of the steel needle (14).
3. The venous indwelling needle for preventing blood backflow according to claim 2, wherein a pipe sleeve (16) is sleeved on one end surface of the three-way pipe (1) far away from the isolating plug (13), and the pipe sleeve (16) is sleeved on the surface of the catheter (12).
4. The venous indwelling needle for preventing blood backflow according to claim 1, wherein a positive pressure joint (17) is connected to one end of the extension tube (2) far away from the three-way tube (1), a heparin cap (18) is connected to one end of the positive pressure joint (17) far away from the extension tube (2), and an end cap (19) is arranged on one side of the positive pressure joint (17).
5. The venous indwelling needle for prevention of blood reflux according to claim 3, wherein the three-way tube (1), the extension tube (2) and the cannula (16) are all translucent.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123326938.7U CN217014932U (en) | 2021-12-27 | 2021-12-27 | Venous indwelling needle capable of preventing blood from flowing back |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123326938.7U CN217014932U (en) | 2021-12-27 | 2021-12-27 | Venous indwelling needle capable of preventing blood from flowing back |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217014932U true CN217014932U (en) | 2022-07-22 |
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ID=82442963
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202123326938.7U Active CN217014932U (en) | 2021-12-27 | 2021-12-27 | Venous indwelling needle capable of preventing blood from flowing back |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217014932U (en) |
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2021
- 2021-12-27 CN CN202123326938.7U patent/CN217014932U/en active Active
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