CN217593514U

CN217593514U - Anti-blocking remaining needle

Info

Publication number: CN217593514U
Application number: CN202220520896.6U
Authority: CN
Inventors: 蔡海利
Original assignee: Ziyang People's Hospital
Current assignee: Ziyang People's Hospital
Priority date: 2022-03-08
Filing date: 2022-03-08
Publication date: 2022-10-18
Anticipated expiration: 2032-03-08

Abstract

The utility model provides an anti-blocking indwelling needle, which comprises a needle core and an indwelling tube, wherein the indwelling tube is sleeved on the outer wall of the needle core; a tube seat is fixed at the rear end of the indwelling tube, a separation plate is rotationally connected in the tube seat, a first through hole is formed in the separation plate, the aperture of the first through hole is matched with the outer diameter of the needle core, and the first through hole penetrates through the side wall of the separation plate; the outer wall of the tube seat is rotatably connected with a rotating block, and the rotating block is fixedly connected with the isolation plate; the infusion tube is characterized in that a sleeve is arranged at one end, far away from the indwelling tube, of the tube seat, an infusion port is formed in the sleeve and connected with an infusion tube. The utility model discloses can effectual isolated blood flow back to in sleeve pipe and the transfer line, avoid remaining blood on the pipe wall of sleeve pipe and transfer line, prevent that blood from solidifying and blockking up transfer line and sleeve pipe, guarantee that the infusion is unobstructed.

Description

Anti-blocking remaining needle

Technical Field

The utility model relates to an indwelling needle field particularly, relates to an anti-blocking indwelling needle.

Background

The indwelling needle mainly comprises a soft catheter/cannula which can be indwelling in a blood vessel, and a stainless steel puncture guiding needle core. When in use, the catheter and the needle core are punctured into a blood vessel together, after the catheter completely enters the blood vessel, the needle core is withdrawn, and only the soft catheter is kept in the blood vessel so as to carry out infusion treatment. The use of the indwelling needle can reduce the pain of the patient caused by repeated venipuncture, is convenient for clinical medication, can help the critical patient to rescue the drug, and can reduce the workload of nurses and the pain of the patient.

However, when the conventional indwelling needle is not used for infusion, blood of the patient easily flows back into the indwelling needle, and the indwelling needle is easily clogged. Therefore, most patents prevent blood from flowing backwards by additionally arranging an anti-virus plug or an isolation plug and other similar structures, and avoid blockage caused by blood coagulation in a tube, wherein the patent CN201822094509.3 discloses a blockage-preventing indwelling needle, and the patent CN201720212382.3 discloses a blockage-preventing venous indwelling needle.

However, similar indwelling needles with anti-clogging function need to be pulled out when preparing infusion, and when pulling out the anti-clogging function, because the anti-clogging function is closely attached to the wall of the tube, the blood in the venous blood vessel can enter the tube along with the anti-clogging function; although most of the blood entering the vessel enters the vessel along with the liquid medicine under the action of transfusion, a small amount of blood remains on the vessel wall, and the blood remaining on the vessel wall is easy to be brought into the vessel by the liquid medicine after being coagulated, so that thrombus is easy to form, and further the health of human bodies is damaged.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a prevent stifled needle of keeping somewhere, it is not enough to prior art, can effectual isolated blood flow back to in sleeve pipe and the transfer line, avoids remaining blood on the pipe wall of sleeve pipe and transfer line, prevents that blood from solidifying and blockking up transfer line and sleeve pipe, guarantees that the infusion is unobstructed.

The embodiment of the utility model discloses a realize through following technical scheme: an anti-blocking indwelling needle comprises a needle core and an indwelling tube, wherein the indwelling tube is sleeved on the outer wall of the needle core; a tube seat is fixed at the rear end of the indwelling tube, an isolating plate is rotationally connected in the tube seat, a first through hole is formed in the isolating plate, the aperture of the first through hole is matched with the outer diameter of the needle core, and the first through hole penetrates through the side wall of the isolating plate; the outer wall of the tube seat is rotatably connected with a rotating block, and the rotating block is fixedly connected with the isolation plate; the infusion tube is characterized in that a sleeve is arranged at one end, far away from the indwelling tube, of the tube seat, an infusion port is formed in the sleeve and connected with an infusion tube.

Further, the terminal of sleeve pipe is connected with the shutoff piece, the shutoff piece includes plugging head, block cap and fixed connection at the connecting rod between plugging head and block cap, the block cap is used for closing the terminal of sleeve pipe.

Further, the blocking piece is connected with the sleeve through a connecting band.

Furthermore, a through hole is formed between the partition board and the end face, far away from the indwelling tube, of the tube seat, a communicating pipe is arranged between the tube seat and the infusion tube, one end of the communicating pipe is communicated with the infusion tube, and the other end of the communicating pipe is connected with the through hole

Furthermore, a second through hole is formed in the isolation plate, the liquid inlet end of the second through hole is connected with the infusion tube, the liquid outlet end of the second through hole is communicated with the first through hole, a liquid outlet is formed in one end face of the isolation plate, and the liquid outlet is connected with the first through hole.

Furthermore, a communicating pipe is arranged between the pipe seat and the infusion pipe, one end of the communicating pipe is communicated with the infusion pipe, and the other end of the communicating pipe is connected with the second through hole through a rotary joint.

Further, a handle is fixed at the tail end of the stylet.

Further, an application is fixed on the outer side surface of the sleeve.

The utility model discloses technical scheme has following advantage and beneficial effect at least:

the utility model discloses a set up the division board, the division board does not influence the nook closing member and moves back out after the puncture and keep somewhere the pipe operation to it is rotatory to take the division board through rotatory piece, changes the state of division board, realizes sealing and opening keeping somewhere the pipe, when the division board seals and keeps somewhere the pipe, effectual prevention blood refluence gets into transfer line and cover intraductal.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are required to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention, and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.

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

fig. 2 is a schematic structural view of the partition board disclosed in the present invention;

an icon: 1-a needle core; 2-indwelling tube; 3-a rotary joint; 4-rotating the block; 5-communicating pipe; 6-an infusion tube; 7-application; 8-a stopper; 81-plugging head; 82-a connecting rod; 83-a cap; 9-a separation plate; 91-a second via; 92-a first via; 93-a liquid outlet; 10-handle.

Detailed Description

In the description of the present invention, it should be noted that, if the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" and the like indicate the position or positional relationship based on the position or positional relationship shown in the drawings, or the position or positional relationship which is usually placed when the product of the present invention is used, the description is only for convenience of description and simplification, but the indication or suggestion that the device or element to be referred must have a specific position, be constructed and operated in a specific position, and thus, cannot be understood as a limitation of the present invention.

In the description of the present invention, it should be further noted that unless otherwise explicitly stated or limited, the terms "disposed," "mounted," "connected," and "connected" should be broadly construed, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood as a specific case by those skilled in the art.

Example 1

As shown in figures 1-2, the anti-blocking indwelling needle comprises a needle core 1 and an indwelling tube 2, wherein the indwelling tube 2 is sleeved on the outer wall of the needle core 1, the needle core 1 pierces the skin, and the needle core is inserted into a vein with the indwelling tube 2; a tube seat is fixed at the rear end of the indwelling tube 2, a separation plate 9 is rotationally connected in the tube seat, a first through hole 92 is formed in the separation plate 9, the aperture of the first through hole 92 is matched with the outer diameter of the stylet 1, and the first through hole 92 penetrates through the side wall of the separation plate 9; on the one hand, when the indwelling needle is not used, the needle core 1 passes through the first through hole 92, and when the needle core 1 is taken out after the needle core 1 with the indwelling tube 2 is inserted into the venous blood vessel, the partition plate 9 does not interfere with the needle core 1, and the needle core 1 is directly taken out from the first through hole 92; on the other hand, the first through hole 92 can also allow the liquid medicine to flow therethrough during the infusion, thereby ensuring smooth flow of the liquid medicine.

In this embodiment, in order to enable the medical staff to rotate the isolation board 9, the outer wall of the tube seat is rotatably connected with a rotating block 4, the rotating block 4 is fixedly connected with the isolation board 9, and the isolation board 9 is rotated by rotating the rotating block 4, so as to change the states of the isolation board 9 for closing the indwelling tube 2 and opening the indwelling tube 2.

Furthermore, the rotation angle stroke of the rotating block 4 is 0-90 degrees, when the rotation angle of the rotating block 4 is 0 degrees, the end surface of the isolation plate 9 is parallel to the axis of the indwelling tube 2, a gap is formed between the end surface of the isolation plate 9 and the inner wall of the tube seat, and the liquid medicine can flow to the indwelling tube 2 through the gap; when the rotation angle of the rotating block 4 is 90 degrees, the end surface of the isolation plate 9 is perpendicular to the axis of the indwelling tube 2, the first through hole 92 is sealed by the inner wall of the tube seat, and the end surface of the isolation plate 9 seals the indwelling tube 2 to block the backflow of blood.

In this embodiment, the one end of keeping away from on the tube socket and keeping somewhere pipe 2 is provided with the sleeve pipe, the transfusion mouth has been seted up on the sleeve pipe, transfusion tube 6 is connected to the transfusion mouth, and the liquid medicine flows to the sleeve pipe from the transfusion mouth through transfusion tube 6, and then gets into in the vein blood vessel through keeping somewhere pipe 2.

In this embodiment, in order to guarantee that division board 9 can rotate smoothly, division board 9 and tube socket inner wall do not set up seal structure, just because so, it is not very ideal only to have division board 9 to block the effect of blood backward flow, and from this, sheathed tube end-to-end connection has blocking member 8, blocking member 8 includes blocking head 81, block cap 83 and fixed connection at the connecting rod 82 between blocking head 81 and block cap 83, cap 83 is used for the terminal of closed casing, and medical staff holds block cap 83, puts into the sleeve with blocking head 81 and promotes blocking head 81 through connecting rod 82 and make the terminal surface of blocking head 81 butt at the tube socket, blocks up the tube socket, further blocks blood backward flow to sleeve pipe and transfer line 6.

Further, the outer diameter of the plugging head 81 is matched with that of the sleeve, so that the plugging head 81 can be used for tightly plugging the pipe seat.

In this embodiment, since the blocking member 8 has a certain length dimension, in order to facilitate the insertion of the blocking member 8 into the cannula, a certain distance needs to exist between the blocking member 8 and the distal end of the cannula, whereby the blocking member 8 is connected to the cannula by a connection band, which is usually a soft material.

In this embodiment, as shown in fig. 2, further, since the blocking member 8 is provided, the blocking member 8 needs to be removed during the infusion, but the blocking head 81 is in tight sliding connection with the inner wall of the cannula, and the partition plate 9 is in a state of closing the indwelling tube 2 in order to prevent the blocking member 8 from drawing blood in the venous blood vessel like a medical injection tube when the blocking member 8 is removed; however, after the partition board 9 seals the indwelling tube 2, along with the process of taking out the plugging head 81, the pressure intensity of the space between the plugging head 81 and the partition board 9 is gradually reduced, which results in the pressure intensity difference between the two ends of the plugging head 81, so that the plugging head 81 is difficult to take out, in order to solve the defect of the technical stretching, the partition board 9 is provided with the second through hole 91, the liquid inlet end of the second through hole 91 is connected with the infusion tube 6, the liquid outlet end of the second through hole 91 is communicated with the first through hole 92, one end surface of the partition board 9 is provided with the liquid outlet 93, the liquid outlet 93 is connected with the first through hole 92, in the process of taking out the plugging head 81, the liquid medicine in the infusion tube 6 can enter the gap between the plugging head 81 and the partition board 9 through the second through hole 91 and the liquid outlet 93, the pressure intensity at the two ends of the plugging head 81 is ensured to be equal, the purpose of conveniently taking out the plugging head 81 is achieved, and the blood in the venous blood tube can be prevented from being drawn by the plugging head 81.

In this embodiment, because rotatory piece 4 needs to have rotary motion, and second through-hole 91 needs to communicate with transfer line 6 again, be provided with communicating pipe 5 between tube socket and the transfer line 6, the one end and the transfer line 6 intercommunication of communicating pipe 5, the other end of communicating pipe 5 passes through rotary joint 3 and is connected with second through-hole 91, and rotary joint 3 guarantees that rotatory piece 4 can normally rotate, can make communicating pipe 5 be connected with second through-hole 91 again.

It should be noted that the structure of the rotary joint 3 is, for example, the rotary joint 3 commonly used in machinery, and the size is adjusted according to the size of the device, which is not described herein again.

In the present embodiment, a handle 10 is fixed at the end of the stylet 1, so as to facilitate the operation of the stylet 1 by medical staff.

In this embodiment, an application 7 is fixed to the outer side of the cannula, the application 7 being capable of fixing the indwelling needle to the skin surface near the puncture site.

In this embodiment, an anti-blocking operation of the anti-blocking indwelling needle is as follows:

s1: after the venipuncture is finished, the needle core 1 is taken out, and the isolation plate 9 can freely rotate;

s2: when the blood backflow is blocked, the rotating block 4 is rotated to the 90-degree position, the state of the isolation plate 9 is as described above, and the isolation plate 9 isolates the blood backflow; the blocking head 81 of the blocking piece 8 is inserted into the sleeve and pushed to be attached to the end face of the tube seat to block the end face of the tube seat, and at the moment, the cap 83 seals the tail end of the sleeve to prevent dust or germs in the air from entering, so that the blocking of blood backflow is completed;

s3: during transfusion, the rotating block 4 is firstly stored at a 90-degree position, the transfusion tube 6 is connected with a liquid medicine belt filled with liquid medicine, and the blocking piece 8 is extracted, wherein the principle and the mode are explained above, and are not described herein; when the blocking head 81 is positioned between the infusion port and the tail end of the sleeve, the rotating block 4 is rotated to the 0-degree position, the state of the partition plate 9 is as described above, and the liquid medicine can normally flow to the indwelling tube 2;

example 2

Different from the embodiment 1, in order to ensure that the pressures at the two ends of the plugging head 81 are equal, a through hole is formed between the partition plate 9 and the end surface of the tube seat far away from the indwelling tube 2, a communicating tube 5 is arranged between the tube seat and the infusion tube 6, one end of the communicating tube 5 is communicated with the infusion tube 6, and the other end of the communicating tube 5 is connected with the through hole; this arrangement also achieves the object of facilitating the removal of the plugging head 81, and also eliminates the need for providing the second through hole 91 and the liquid outlet 93 in the partition plate 9, and also eliminates the need for the rotary joint 3 since the communicating pipe 5 is not connected to the partition plate 9.

The above is only a preferred embodiment of the present invention, and is not intended to limit the present invention, and various modifications and changes will occur to those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. An anti-blocking indwelling needle comprises a needle core (1) and an indwelling tube (2), wherein the indwelling tube (2) is sleeved on the outer wall of the needle core (1); the method is characterized in that: a tube seat is fixed at the rear end of the indwelling tube (2), a separation plate (9) is rotationally connected in the tube seat, a first through hole (92) is formed in the separation plate (9), the aperture of the first through hole (92) is matched with the outer diameter of the needle core (1), and the first through hole (92) penetrates through the side wall of the separation plate (9); the outer wall of the tube seat is rotatably connected with a rotating block (4), and the rotating block (4) is fixedly connected with an isolation plate (9); a sleeve is arranged at one end of the tube seat, which is far away from the indwelling tube (2), an infusion port is arranged on the sleeve, and the infusion port is connected with an infusion tube (6).

2. The anti-clogging indwelling needle of claim 1, wherein: the sheathed tube end-to-end connection has stifled plug member (8), stifled plug member (8) are including stifled stopper (81), block cap (83) and fixed connection at connecting rod (82) between stifled stopper (81) and block cap (83), block cap (83) are used for sealing sheathed tube end.

3. The anti-clogging indwelling needle according to claim 2, wherein: the plugging piece (8) is connected with the sleeve through a connecting band.

4. The anti-clogging indwelling needle according to claim 2, wherein: set up the through-hole between the terminal surface of keeping away from on division board (9) and the tube socket and keeping away from pipe (2), be provided with communicating pipe (5) between tube socket and transfer line (6), the one end and transfer line (6) intercommunication of this communicating pipe (5), the other end and the through-hole of communicating pipe (5) are connected.

5. The anti-clogging indwelling needle of claim 2, wherein: the infusion device is characterized in that a second through hole (91) is formed in the isolation plate (9), the liquid inlet end of the second through hole (91) is connected with the infusion tube (6), the liquid outlet end of the second through hole (91) is communicated with the first through hole (92), a liquid outlet (93) is formed in one end face of the isolation plate (9), and the liquid outlet (93) is connected with the first through hole (92).

6. The anti-clogging indwelling needle according to claim 4, wherein: a communicating pipe (5) is arranged between the pipe seat and the infusion pipe (6), one end of the communicating pipe (5) is communicated with the infusion pipe (6), and the other end of the communicating pipe (5) is connected with the second through hole (91) through a rotary joint (3).

7. The anti-clogging indwelling needle according to claim 1, wherein: a hand-held handle (10) is fixed at the tail end of the stylet (1).

8. The anti-clogging indwelling needle of claim 1, wherein: an application patch (7) is fixed on the outer side surface of the sleeve.