CN215083400U

CN215083400U - Anti-reflux remaining needle

Info

Publication number: CN215083400U
Application number: CN202120951973.9U
Authority: CN
Inventors: 万胤辰; 王招娣; 程丽娟
Original assignee: First Affiliated Hospital of Zhejiang University School of Medicine
Current assignee: First Affiliated Hospital of Zhejiang University School of Medicine
Priority date: 2021-04-30
Filing date: 2021-04-30
Publication date: 2021-12-10
Anticipated expiration: 2031-04-30

Abstract

The utility model provides an anti-reflux remaining needle, belonging to the field of medical instruments, solving the problem that the existing blood can reflux to the middle level of an extension tube, a one-way valve is arranged in a branch tube, an infusion flushing tube is connected with a fixed sleeve through the extension tube, and a liquid stopping clamp is arranged on an infusion tube; the liquid stopping clamp comprises a first plate body and a second plate body, one ends of the first plate body and the second plate body are connected through a bending arc section body, the bending arc section body is provided with a first hole for the penetration of an extension pipe, and the first plate body is provided with a second hole for the penetration of the extension pipe; a rubber ring is arranged between the first opening and the extension pipe; the other end of the first plate body is provided with a clamping groove, the other end of the second plate body is provided with a clamping block for clamping the clamping groove, the inner side of the first plate body is provided with a first protruding portion, the inner side of the second plate body is provided with a second protruding portion, and the first protruding portion and the second protruding portion are matched to clamp the extension pipe. The utility model discloses can prevent that blood from flowing back in the extension pipe, and end liquid and press from both sides convenient to use.

Description

Anti-reflux remaining needle

Technical Field

The utility model belongs to the field of medical equipment, in particular to anti palirrhea needle of keeping somewhere.

Background

Currently, an indwelling needle is generally used in clinic, for example, in the process of intravenous infusion, the use of the indwelling needle can reduce fear and pain of a patient caused by repeated venipuncture. However, the existing indwelling needle lacks a structure for preventing backflow of blood.

To solve the problems in the prior art, the specification of the utility model 'a valve type anti-reflux indwelling needle' with patent application number 201920126767.7 discloses a structure capable of avoiding blood reflux, which plays the purpose of preventing blood reflux by arranging a one-way valve in a transfusion wash pipe.

However, in the clinical use process, it is found that blood flows back to the liquid stopping clamp from the joint of the trocar and the extension tube, blood exists in the extension tube, and the venous blood of some patients is sticky and easy to coagulate, so that the venous blood remains adhered to the extension tube, and the use of the indwelling needle is influenced. Even sometimes, the patient moves and the liquid stopping clamp loosens, so that blood exceeds the liquid stopping clamp, and blood is coagulated in the extension tube to influence the use of the indwelling needle.

SUMMERY OF THE UTILITY MODEL

The utility model aims at the above-mentioned problem that exists among the prior art, provide an anti palirrhea needle of keeping somewhere.

The purpose of the utility model can be realized by the following technical proposal: the anti-reflux indwelling needle is characterized by comprising a fixed sleeve and an infusion flushing pipe, wherein an indwelling hose is arranged in the middle of the fixed sleeve, a puncture needle is arranged in the indwelling hose, a branch pipe is arranged on one side of the fixed sleeve, the indwelling hose is connected with an extension pipe through the branch pipe, a first one-way valve is arranged in the branch pipe, a second one-way valve is arranged in the infusion flushing pipe, the infusion flushing pipe is connected with the fixed sleeve through the extension pipe, and a liquid stopping clamp is arranged on the infusion flushing pipe;

the liquid stopping clamp comprises a first plate body and a second plate body, one ends of the first plate body and the second plate body are connected through a bent arc section body, the bent arc section body is provided with a first hole for an extension pipe to penetrate through, and the first plate body is provided with a second hole for the extension pipe to penetrate through; a rubber ring is arranged between the first opening and the extension pipe;

the other end of the first plate body is provided with a clamping groove, the other end of the second plate body is provided with a clamping block for clamping the clamping groove, a first protruding portion is arranged on the inner side of the first plate body, a second protruding portion is arranged on the inner side of the second plate body, and the first protruding portion and the second protruding portion are matched to clamp the extension pipe.

The utility model discloses a theory of operation: the puncture needle is inserted into a vein, the indwelling hose is inserted into the vein along with the puncture needle, and medical personnel can enter the vein through the liquid outside the infusion flushing pipe, enter the vein through the infusion flushing pipe and then enter the vein through the extension pipe, the branch pipe and the indwelling hose. After the infusion is finished, the liquid stopping clamp is adopted to clamp the extension tube, and because the first one-way valve is arranged in the branch tube and the second one-way valve is arranged in the infusion tube, compared with the prior art, the blood can not flow back into the extension tube, and the blood is prevented from being coagulated in the extension tube to influence the use of the indwelling needle.

Extension pipe passes from first trompil, the second trompil, medical personnel press first plate body and second plate body, make first plate body and second plate body be close to each other until the fixture block card goes into the draw-in groove, first bellying and the cooperation of second bellying press from both sides and end the extension pipe, when the extension pipe is worn to establish in first trompil, the rubber circle is in the state of compressed, frictional force between rubber circle and the extension pipe is big, make the extension pipe be difficult for the removal of crooked arc section body, thereby make and end the difficult slip of liquid clamp.

The utility model discloses a press first plate body and second plate body and just can press from both sides only ending extension pipe, it is very convenient.

In the anti-reflux indwelling needle, the liquid stopping clip is made of elastic plastic.

In foretell anti palirrhea needle of keeping somewhere, first one-way valve includes stop part and diaphragm, the through-hole has been seted up at the stop part middle part, the diaphragm middle part is provided with the arch that is used for sealing the through-hole, be provided with the hole of permeating water around the arch, the diaphragm is located one side that the stop part is close to the pjncture needle.

In the anti-reflux indwelling needle described above, the membrane is made of an elastic material.

In the anti-reflux indwelling needle described above, the outer edge of the membrane and the outer edge of the blocking portion are fixedly connected.

In the anti-reflux indwelling needle, the protrusion is disc-shaped, the through hole is a circular hole, and the diameter of the protrusion is larger than that of the through hole.

In the above-mentioned anti-reflux indwelling needle, the projection is made of an elastic material.

In the above-mentioned anti-reflux indwelling needle, the water permeable hole is covered with a water permeable filtering membrane.

In the anti-reflux indwelling needle, the anti-reflux indwelling needle further comprises an application patch, wherein the application patch is used for fixing the fixing sleeve and the trocar and is made of transparent materials.

Compared with the prior art, the utility model discloses can prevent that blood from flowing back in the extension pipe, and end liquid and press from both sides convenient to use.

Drawings

Fig. 1 is a schematic structural diagram of the present invention;

fig. 2 is an enlarged schematic view of a portion a in fig. 1 according to the present invention.

In the figure, 1, a fixed sleeve; 2. flushing a tube for transfusion; 3. a hose is left; 4. puncturing needle; 5. pipe distribution; 6. an extension tube; 7. a first one-way valve; 8. liquid stopping clips; 9. a first plate body; 10. a second plate body; 11. bending the arc segment body; 12. a first opening; 13. a second opening; 14. a rubber ring; 15. a card slot; 16. a clamping block; 17. a first boss portion; 18. a second boss portion; 19. a blocking portion; 20. a membrane; 21. a through hole; 22. a protrusion; 23. water permeable holes; 24. a water permeable filtration membrane; 25. applying; 26. sealing the pipe plug; 27. a needle handle; 28. a second one-way valve.

Detailed Description

The following are specific embodiments of the present invention and the accompanying drawings are used to further describe the technical solution of the present invention, but the present invention is not limited to these embodiments.

As shown in fig. 1-2, an anti-reflux indwelling needle comprises a fixed sleeve 1 and an infusion flushing pipe 2, wherein an indwelling hose 3 is arranged in the middle of the fixed sleeve 1, a puncture needle 4 is arranged in the indwelling hose 3, a branch pipe 5 is arranged on one side of the fixed sleeve 1, the indwelling hose 3 is connected with an extension pipe 6 through the branch pipe 5, a first one-way valve 7 is arranged in the branch pipe 5, a second one-way valve 28 is arranged in the infusion flushing pipe 2, the infusion flushing pipe 2 is connected with the fixed sleeve 1 through the extension pipe 6, and a liquid stopping clamp 8 is arranged on the infusion flushing pipe 2;

the liquid stopping clamp 8 comprises a first plate body 9 and a second plate body 10, one ends of the first plate body 9 and the second plate body 10 are connected through a bent arc section body 11, the bent arc section body 11 is provided with a first hole 12 for the extension pipe 6 to penetrate through, and the first plate body 9 is provided with a second hole 13 for the extension pipe 6 to penetrate through; a rubber ring 14 is arranged between the first opening 12 and the extension pipe 6;

the other end of the first plate body 9 is provided with a clamping groove 15, the other end of the second plate body 10 is provided with a clamping block 16 for clamping the clamping groove 15, the inner side of the first plate body 9 is provided with a first protruding portion 17, the inner side of the second plate body 10 is provided with a second protruding portion 18, and the first protruding portion 17 and the second protruding portion 18 are matched to clamp the extension pipe 6.

The infusion flushing pipe 2 is provided with a sealing pipe plug 26, and the opening of the infusion flushing pipe 2 is sealed by the sealing pipe plug 26 when not in use. The puncture needle 4 is also connected with a needle handle part 27, and the needle handle part 27 is convenient for medical staff to operate to puncture the puncture needle 4 into the vein.

In more detail, the liquid stopping clip 8 is made of elastic plastic. The liquid stopping clamp 8 is light in weight and low in cost due to the arrangement.

In more detail, the first one-way valve 7 comprises a blocking portion 19 and a membrane 20, a through hole 21 is formed in the middle of the blocking portion 19, a protrusion 22 for closing the through hole 21 is arranged in the middle of the membrane 20, a water permeable hole 23 is formed around the protrusion 22, and the membrane 20 is located on one side, close to the puncture needle 4, of the blocking portion 19. The membrane 20 is made of an elastic material. The outer edge of the diaphragm 20 is fixedly connected with the outer edge of the blocking part 19, the protrusion 22 is in a disc shape, the through hole 21 is a circular hole, and the diameter of the protrusion 22 is larger than that of the through hole 21. The projections 22 are made of an elastic material. In this embodiment, the stopper 19 is annular, and the diaphragm 20 is a circular disk.

When the infusion flushing pipe 2 is connected with an external infusion pipe and then the intravenous infusion is carried out through the extension pipe 6, the diaphragm 20 is enabled to bulge towards the puncture needle 4 side under the action of positive pressure during the infusion, the bulge 22 is far away from the through hole 21, the through hole 21 is opened, and the liquid enters the indwelling hose 3 from the extension pipe 6 through the permeable hole 23. When the external fluid pressure is lower than the pressure in the patient's body, the blood in the vein flows back, but the diaphragm 20 moves toward the stopper 19 due to the first one-way valve 7, and the protrusion 22 blocks the through hole 21, thereby preventing the blood from flowing back into the extension tube 6. The diameter of the protrusion 22 is larger than that of the through hole 21 and the protrusion 22 is made of an elastic material, so that the protrusion 22 has a good effect of sealing the through hole 21.

In further detail, the water permeable holes 23 are covered with a water permeable filtering membrane 24. When the infusion flushing pipe 2 is used for infusion, small particle impurities may still exist in the liquid medicine, and the water permeable filtering membrane 24 is used for filtering the liquid medicine and preventing the particle impurities from entering the body. The first one-way valve 7 of the present embodiment not only can prevent the backflow of blood into the extension tube but also can filter particulate impurities in the liquid medicine.

In further detail, the medical trocar sleeve also comprises an application 25, the application 25 is used for fixing the fixing sleeve 1 and the trocar, and the application 25 is made of transparent materials. The applicator 25 is used to fix the pouch 1 and cannula to the skin of the patient. The application 25 made of transparent material is easy to observe.

The specific embodiments described herein are merely illustrative of the spirit of the invention. Various modifications, additions and substitutions for the specific embodiments described herein may be made by those skilled in the art without departing from the spirit of the invention or exceeding the scope of the invention as defined in the accompanying claims.

Although a large number of terms are used here more, the possibility of using other terms is not excluded. These terms are used merely to more conveniently describe and explain the nature of the present invention; they are to be construed in a manner that is inconsistent with the spirit of the invention.

Claims

1. The anti-reflux indwelling needle is characterized by comprising a fixed sleeve (1) and an infusion flushing pipe (2), wherein an indwelling hose (3) is arranged in the middle of the fixed sleeve (1), a puncture needle (4) is arranged in the indwelling hose (3), a branch pipe (5) is arranged on one side of the fixed sleeve (1), the indwelling hose (3) is connected with an extension pipe (6) through the branch pipe (5), a first one-way valve (7) is arranged in the branch pipe (5), a second one-way valve (28) is arranged in the infusion flushing pipe (2), the infusion flushing pipe (2) is connected with the fixed sleeve (1) through the extension pipe (6), and a liquid stopping clamp (8) is arranged on the infusion flushing pipe (2);

the liquid stopping clamp (8) comprises a first plate body (9) and a second plate body (10), one ends of the first plate body (9) and the second plate body (10) are connected through a bent arc section body (11), the bent arc section body (11) is provided with a first opening (12) for the penetration of the extension pipe (6), and the first plate body (9) is provided with a second opening (13) for the penetration of the extension pipe (6); a rubber ring (14) is arranged between the first opening (12) and the extension pipe (6);

the other end of first plate body (9) is provided with draw-in groove (15), the other end of second plate body (10) is provided with fixture block (16) that are used for the card to go into draw-in groove (15), the inboard of first plate body (9) is provided with first bellying (17), the inboard of second plate body (10) is provided with second bellying (18), first bellying (17) and second bellying (18) cooperation are pressed from both sides and are ended extension pipe (6).

2. An anti-reflux indwelling needle according to claim 1, wherein the liquid stopper (8) is made of elastic plastic.

3. The anti-reflux indwelling needle according to claim 1, wherein the first one-way valve (7) comprises a blocking part (19) and a membrane (20), a through hole (21) is formed in the middle of the blocking part (19), a protrusion (22) for closing the through hole (21) is arranged in the middle of the membrane (20), water permeable holes (23) are formed around the protrusion (22), and the membrane (20) is positioned on one side of the blocking part (19) close to the puncture needle (4).

4. An anti-reflux indwelling needle according to claim 3, wherein the membrane (20) is made of an elastic material.

5. The anti-reflux indwelling needle according to claim 3, wherein the outer edge of the membrane (20) and the outer edge of the blocking portion (19) are fixedly connected.

6. The anti-reflux indwelling needle according to claim 3, wherein the protrusion (22) has a disk shape, the through hole (21) is a circular hole, and the diameter of the protrusion (22) is larger than that of the through hole (21).

7. An anti-reflux indwelling needle according to claim 3, wherein the protuberance (22) is made of an elastic material.

8. An anti-reflux indwelling needle according to claim 3, wherein the water permeable holes (23) are covered with a water permeable filter membrane (24).

9. An anti-reflux indwelling needle according to claim 1, further comprising an application (25), said application (25) being for securing the fixation sleeve (1) and the trocar, said application (25) being made of a transparent material.