CN212395528U

CN212395528U - Multi-tip valve type vein backflow preventing indwelling needle

Info

Publication number: CN212395528U
Application number: CN202021804457.5U
Authority: CN
Inventors: 安晓燕; 封帆
Original assignee: Yanan University Affiliated Hospital
Current assignee: Yanan University Affiliated Hospital
Priority date: 2020-08-26
Filing date: 2020-08-26
Publication date: 2021-01-26
Anticipated expiration: 2030-08-26

Abstract

The utility model discloses a needle is kept somewhere in vein backward flow is prevented to many sharp valve formula, including keeping somewhere the needle body and keeping somewhere the needle, the afterbody of keeping somewhere the needle body is equipped with the pipe seat, be provided with the sealing plug in the pipe seat, the lateral wall of sealing plug and the inboard wall of pipe seat are laminated mutually, the trailing end connection of pipe seat has sleeve pipe an, pipe seat overcoat has the cap, the cap still overcoat is on the tail end of keeping somewhere the needle body, the one end that keeps somewhere the needle is kept away from to the pipe seat is equipped with sleeve pipe b, it lies in sleeve pipe b to keep somewhere the needle and pass behind the sealing plug, the bottom outer wall of keeping somewhere the needle body is equipped with presses the splenium, the inside of keeping somewhere the needle body is equipped with the negative pressure and attracts the bag, press the splenium setting to attract the top of bag at the negative pressure, the one. The utility model discloses simple structure can effectually prevent the venous return.

Description

Multi-tip valve type vein backflow preventing indwelling needle

Technical Field

The utility model belongs to the technical field of medical supplies, a needle is kept somewhere to many cusp valve formula venous return of preventing is related to.

Background

The venous indwelling needle is widely used for venous transfusion treatment, but the end part of the existing clinical heating indwelling needle sleeve does not have a closing function, venous blood backflow is easily caused in the non-transfusion process, the backflow venous blood forms small thrombi in the indwelling needle, and further the blockage of the indwelling needle is caused, so that the liquid can not smoothly flow.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a needle is kept somewhere to many cusp valve formula venous return of preventing, can effectually prevent the venous return.

The utility model adopts the technical proposal that: the utility model provides a needle is kept somewhere to many sharp valve formula venous return of preventing, including keeping somewhere the needle body and keeping somewhere the needle, the afterbody of keeping somewhere the needle body is equipped with the pipe seat, be provided with the sealing plug in the pipe seat, the lateral wall of sealing plug and the inboard wall of pipe seat are laminated mutually, the trailing end connection of pipe seat has sleeve pipe an, pipe seat overcoat has the cap, the cap still overcoat is on the tail end of keeping somewhere the needle body, the one end that keeps somewhere the needle is kept away from to the pipe seat is equipped with sleeve pipe b, it lies in sleeve pipe b to keep somewhere the needle and pass behind the sealing plug, the bottom outer wall of keeping somewhere the needle body is equipped with presses the splenium, the inside of keeping somewhere the needle body is equipped with the vacuum aspiration bag, press the splenium setting to attract the top of bag at the vacuum aspiration bag, the.

The technical proposal adopted by the utility model is also characterized in that,

the open end of the negative pressure suction bag is arranged in an upward inclined mode, the aperture of the open end of the negative pressure suction bag is the same as the aperture of the sleeve b, and the lowest end of the negative pressure suction bag after being pressed is aligned with the lowest end of the sleeve b.

The bottom of the opening end of the negative pressure suction bag is fixedly connected with a spring, and one end of the spring is fixedly connected with the inner wall of the indwelling needle tube body.

The end part of the sleeve a far away from the indwelling needle body is provided with a movable flap, the end part of the sleeve a is provided with a plurality of gaps along the radial direction, the number of the gaps is a plurality and even number, and the end part of the sleeve a forms a multi-flap structure.

The movable valve is a magnetic valve, and the magnetism of adjacent valves is opposite.

Each movable flap is fixedly connected with a 301 steel wire, and the other end of the 301 steel wire is fixedly connected in the catheter seat.

The pressing part and the indwelling needle tube body are of an integrated structure.

The outside of the sleeve a is sleeved with a needle cap.

The utility model has the advantages that: the movable flap is opened to the pressure that current means passes through infusion liquid, pressure is too little sometimes, often not open the movable flap, the utility model discloses a means of pressing is exerted pressure, the size of pressure can be controlled at will, can be quick, accurate open the movable flap, can effectively improve nurse personnel's venipuncture's success rate, in addition, through setting up a plurality of movable flaps, it is opened under certain pressure and is carried out the venous transfusion, close during the absence of pressure to play the emergence that prevents the venous return, 301 steel wire can prevent that the movable flap from in the process interruption of using in the human body, causes certain risk, the utility model discloses simple structure can improve the success rate of keeping somewhere the needle puncture greatly, can also be very big make things convenient for nurse personnel's operation.

Drawings

FIG. 1 is a schematic structural view of a multi-tip valve type anti-venous return indwelling needle of the present invention;

FIG. 2 is a schematic cross-sectional view of the multi-cusp valve type anti-venous return indwelling needle of the present invention;

fig. 3 is a schematic structural view of the movable flap of the present invention;

FIG. 4 is a schematic view of the internal structure of the indwelling needle body of the present invention;

fig. 5 is a schematic structural view of the movable flap of the present invention;

fig. 6 is a schematic view of the movable valve of the multi-tip valve type anti-venous return indwelling needle of the present invention.

In the figure, 1, an indwelling needle tube body, 2, an indwelling needle, 3, a catheter seat, 4, a sealing plug, 5, a sleeve a, 6, a sleeve cap, 7, a sleeve b, 8, a pressing part, 9, a negative pressure suction bag, 10, a spring, 11, a movable flap, 12.301 steel wires and 13, a needle cap.

Detailed Description

The present invention will be described in detail with reference to the accompanying drawings and specific embodiments.

As shown in figure 1, the structure of the multi-tip valve type anti-venous return indwelling needle of the present invention comprises an indwelling needle body 1 and an indwelling needle 2, the indwelling needle body 1 is provided at the tail thereof with a catheter holder 3, a sealing plug 4 is provided in the catheter holder 3, the outer side wall of the sealing plug 4 is attached to the inner side wall of the catheter holder 3, the tail end of the catheter holder 3 is connected with a sleeve a5, a cap 6 is sleeved on the catheter holder 3, the cap 6 is further sleeved on the tail end of the indwelling needle body 1, a sleeve b7 is provided at the end of the catheter holder 3 far from the indwelling needle 2, the indwelling needle 2 is positioned in the sleeve b7 after passing through the 4, the outer wall of the tail of the indwelling needle body 1 is provided with a pressing part 8, the pressing part 8 and the indwelling needle body 1 are integrated, as shown in figure 2, a negative pressure suction bag 9 is provided inside the indwelling needle body 1, the structure of the negative pressure suction bag 9 is shown in figure 3, the negative pressure, one end of the negative pressure suction bag 9 close to the indwelling needle 2 is opened, and one end of the sleeve b7 remote from the indwelling needle 2 is provided on the side of the open end of the negative pressure suction bag 9.

As shown in fig. 4, the open end of the negative pressure suction bag 9 is disposed in an upward inclined manner, the lowest end of the negative pressure suction bag 9 is aligned with the open end of the cannula b7, the aperture of the open end of the negative pressure suction bag 9 is the same as the aperture of the cannula b7, the bottom of the open end of the negative pressure suction bag 9 is fixedly connected with the spring 10, one end of the spring 10 is fixedly connected to the inner wall of the indwelling needle tube 1, the negative pressure suction bag 9 at the open end can be pressed by the pressing portion 8, so that the open end of the negative pressure suction bag 9 is communicated with the cannula b7 to form a closed structure, a larger pressure can be generated in the indwelling needle by pressing, so that the pressure in the indwelling needle cannula is larger than the venous pressure, thereby increasing the blood returning speed and improving the puncture success rate of the indwelling needle, the pressure ratio of the existing indwelling needle is smaller, such as a scalp vein puncture needle, the backflow speed of the static blood is slow, the indwelling needle is successfully punctured, the backflow speed of the transfemoral blood is slow, and the nurse can think that the puncture fails, so that the operation of the nurse is not facilitated.

The end part of the sleeve a5 far away from the indwelling needle body 1 is provided with a movable flap 11, the movable flap 11 is formed by equally arranging a plurality of gaps at the end part of the sleeve a5 along the radial direction, the movable flap has a structure shown in fig. 5, the number of the gaps is a plurality and even, fig. 5 is a movable flap with 4 gaps, namely, the end part of the sleeve a5 is provided with a multi-flap structure, the movable flap 11 is a magnetic flap, and the magnetism of the adjacent flaps is opposite, as shown in fig. 6, during transfusion, the transfusion tube hanger is higher in general, liquid conveyed in the transfusion tube hanger forms certain pressure in a hose, the movable flap 11 can be opened under the action of the pressure, when the pressure is reduced or no pressure is generated, the movable flap 11 can be closed, venous blood backflow can be prevented, tube sealing is not needed when transfusion is stopped, and the workload of a nurse is reduced.

Each movable flap 11 is fixedly connected with a 301 steel wire 12, the other end of the 301 steel wire 12 is fixedly connected in the catheter holder 3, and the 301 steel wire 12 mainly has the function of preventing the movable flap from being broken in a human body to cause certain risks.

The sleeve a5 is externally sleeved with a needle cap 13, and the needle cap 13 is used for protecting the sleeve a5 and the remaining needle 2.

The utility model discloses a theory of operation is: the negative pressure of the existing indwelling needle is too low to easily cause puncture failure, the utility model discloses the device is in the time of venipuncture, and the negative pressure of the indwelling needle negative pressure suction bag 9 is greater than the pressure of blood, can find that the indwelling needle has entered into the blood vessel, prevents the venipuncture failure, and the movable flap 11 can place the venous blood backflow in the process of infusion, and the pressure is produced in the infusion process, and the movable flap 11 is opened under the effect of liquid pressure, then the infusion is carried out; when the transfusion is stopped, if no atmospheric pressure exists, the pressure is low, the movable valve 11 is closed, and the venous blood backflow can be prevented.

The utility model discloses a working process does: when needing to carry out venipuncture to the patient, operating personnel presses the negative pressure suction bag 9 of pressing portion 8 to open end, communicate negative pressure suction bag 9 and sleeve pipe b7, make the open end of negative pressure suction bag 9 and sleeve pipe b7 intercommunication form enclosed construction, can produce great pressure in keeping somewhere the needle through pressing, thereby the pressure in keeping somewhere the needle sleeve is greater than venous pressure, thereby increase the speed of returning blood, thereby improve the success rate of keeping somewhere the needle puncture, carry out the infusion after the venipuncture, when needing the infusion, movable valve 11 opens when atmospheric pressure reaches certain pressure, movable valve 11 is in the closed condition when liquid is over the atmospheric pressure of finishing keeping somewhere the needle, prevent that blood backward flow from blockking up in keeping somewhere the needle sleeve pipe or blood backward flow into keeping somewhere the needle sleeve pipe and make the blood that has coagulated into the thrombus flow into the human body again.

Claims

1. A multi-tip valve type vein backflow preventing indwelling needle is characterized by comprising an indwelling needle tube body (1) and an indwelling needle (2), wherein a catheter seat (3) is arranged at the tail part of the indwelling needle tube body (1), a sealing plug (4) is arranged in the catheter seat (3), the outer side wall of the sealing plug (4) is attached to the inner side wall of the catheter seat (3), a sleeve a (5) is connected to the tail end of the catheter seat (3), a sleeve cap (6) is sleeved outside the catheter seat (3), the sleeve cap (6) is further sleeved on the tail end of the indwelling needle tube body (1), a sleeve b (7) is arranged at one end of the catheter seat (3) far away from the indwelling needle (2), the indwelling needle (2) penetrates through the sealing plug (4) and then is located in the sleeve b (7), a pressing part (8) is arranged on the outer wall of the bottom of the indwelling needle tube body (1), and a negative pressure suction bag (9) is arranged, the pressing part (8) is arranged at the top of the negative pressure suction bag (9), one end of the negative pressure suction bag (9) close to the indwelling needle (2) is arranged as an opening, and one end of the sleeve b (7) far away from the indwelling needle (2) is arranged on one side of the opening end of the negative pressure suction bag (9).

2. The multi-cusp valve type vein reflux prevention indwelling needle according to claim 1, wherein the open end of the negative pressure suction bag (9) is arranged to be inclined upward, the aperture of the open end of the negative pressure suction bag (9) is the same as that of the cannula b (7), and the lowest end of the negative pressure suction bag (9) after being pressed is aligned with the lowest end of the cannula b (7).

3. The multi-cusp valve type vein reflux prevention indwelling needle of claim 2, wherein a spring (10) is fixedly connected to the bottom of the open end of the negative pressure suction bag (9), and one end of the spring (10) is fixedly connected to the inner wall of the indwelling needle tube body (1).

4. The multicuspid valvular anti-venous return indwelling needle according to claim 1, wherein the end of the cannula a (5) far away from the indwelling needle body (1) is provided with a movable flap (11), the movable flap (11) is a plurality of slits equally arranged at the end of the cannula a (5) along the radial direction, the number of the slits is a plurality and even, that is, the end of the cannula a (5) forms a multi-flap structure.

5. The multi-cusped valvular anti-venous return indwelling needle of claim 4, wherein the movable valve (11) is a magnetic valve and the adjacent valves are oppositely magnetic.

6. The multi-cusp valve type anti-venous return indwelling needle of claim 5, wherein a 301 steel wire (12) is fixedly connected to each movable valve (11), and the other end of the 301 steel wire (12) is fixedly connected to the catheter seat (3).

7. The multi-cusp valve type vein reflux prevention indwelling needle of claim 1, wherein the pressing part (8) and the indwelling needle tube body (1) are of an integrated structure.

8. The multi-cusped valve type anti-venous return indwelling needle of any one of claims 1 to 7, wherein the sleeve a (5) is externally sleeved with a needle cap (13).