CN215461403U

CN215461403U - Disposable venous indwelling needle positive pressure three-way connector

Info

Publication number: CN215461403U
Application number: CN202120760127.9U
Authority: CN
Inventors: 赵立群; 邹志易; 文蓝
Original assignee: Shanghai Pudong Hospital Fudan University Pudong Medical Center
Current assignee: Shanghai Pudong Hospital Fudan University Pudong Medical Center
Priority date: 2021-04-14
Filing date: 2021-04-14
Publication date: 2022-01-11
Anticipated expiration: 2031-04-14

Abstract

The utility model discloses a disposable venous indwelling needle positive-pressure three-way connector, which comprises a main body, wherein the main body is a cylindrical cavity, one end of the main body is fixedly connected with a positive-pressure connector, the outer surface of the positive-pressure connector is provided with external threads, the other end of the main body is provided with a connecting seat, a first connecting channel is arranged inside the side wall of the main body and is used for communicating the connecting seat with the positive-pressure connector, the side wall of the main body is fixedly connected with a conical connector, a second connecting channel is arranged between the conical connector and the connecting seat, and a valve core is arranged on the inner surface of the main body in a sliding manner. Thereby facilitating the operation of medical personnel.

Description

Disposable venous indwelling needle positive pressure three-way connector

Technical Field

The utility model relates to the technical field of medical instruments, in particular to a positive pressure three-way joint of a disposable venous indwelling needle.

Background

The application of a venous indwelling needle (vein) is a better method for clinical transfusion, on one hand, the venous indwelling needle can relieve the pain of an infant caused by repeated puncture of a scalp needle and can be suitable for adults with long-term transfusion. On the other hand, the workload of clinical nurses is also reduced. The venous indwelling needle can reduce the pain of a patient caused by repeated venipuncture and the fear of injection, relieve the anxiety of family members, facilitate clinical medication, rescue medication of critical and critical patients and reduce the pain of the patient, so the venous indwelling needle is widely applied clinically.

At present, after a medical worker punctures a vein of a patient by using a vein indwelling needle, a puncture needle tube is pulled out from the rear end of a cannula base and an indwelling needle cannula, a relatively soft cannula part is left in the vein of the patient, and the patient is continuously or discontinuously transfused by the indwelling needle cannula. Because the existing transfusion pipeline joint connected with the three-way type sleeve is not provided with a positive pressure connecting device, when medical equipment such as a syringe and the like is drawn out from the transfusion pipeline joint, liquid backflow and human blood outflow are often caused due to the influence of factors such as human blood pressure and the like, blood flows out of a patient and enters the sleeve, the blood is blocked or coagulated in the sleeve, and the use and transfusion safety of the venous indwelling needle are seriously influenced.

Medical personnel use the backflow that can appear venous blood in the disposable needle of keeping somewhere in-process often, the problem of excessive and air admission, cause medical personnel will produce a psychological burden when using this type of product, thereby influenced the treatment to patient, in order to solve current problem, appear on the market now that one kind has protection device's disposable needle of keeping somewhere, nevertheless still there is the problem of inconvenient operation in the use, for this reason, provide a disposable vein and keep somewhere needle malleation three way connection.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a disposable venous indwelling needle positive pressure three-way connector to solve the problems in the background technology.

In order to achieve the purpose, the utility model provides the following technical scheme: the utility model provides a needle malleation three way connection is kept somewhere to disposable vein, includes the main part, the main part is cylindrical cavity, the one end fixedly connected with malleation of main part connects, the surface that the malleation connects is equipped with the external screw thread, the other end of main part is equipped with the connecting seat, the inside first interface channel that is equipped with of lateral wall of main part, first interface channel will the connecting seat with the malleation communicates between the joint, the lateral wall fixedly connected with taper joint of main part, taper joint with be equipped with the second interface channel between the connecting seat, the internal surface slip of main part is equipped with the case, the case corresponds to be kept away from the one end surface of connecting seat is located the inside that the malleation connects.

Preferably, the case respectively with the malleation connect and the internal surface sliding connection of main part, the both ends of case are equipped with the seal groove respectively, the internal surface of seal groove is equipped with the sealing washer respectively, the one end of first connecting channel is located the internal surface of main part is kept away from the one end of connecting seat, the other end of first connecting channel with the connecting seat is connected, the case is close to a side surface of connecting seat is equipped with the bar groove, the internal surface sliding in bar groove is equipped with the fixed plate, the fixed plate is close to one end of a side fixed surface of connecting seat is connected with the connecting rod, the other end of connecting rod with the connecting seat is connected, the fixed plate with be equipped with the spring between the bar groove.

Preferably, the connecting seat is rotatably connected with the main body, the connecting seat is fixedly connected with a circular plate through a rod piece, the circular plate is rotatably connected with the inner surface of the main body, and the ends, far away from the valve core, of the first connecting channel and the second connecting channel are respectively located between the connecting seat and the circular plate.

Preferably, the outer surface of the connecting rod is provided with an external thread, the connecting rod penetrates through the circular plate, and the connecting rod is in threaded connection with the circular plate.

Preferably, the inner surface of the strip-shaped groove is provided with a sliding block, and the surface of the fixing plate is provided with a sliding groove corresponding to the sliding block.

Compared with the prior art, the utility model has the beneficial effects that: the utility model provides a needle malleation three way connection is kept somewhere to disposable vein, through setting up the main part, sets up malleation joint and connecting seat respectively at main part both ends, produces the negative pressure through the case, and the case is located and connects inside like this to when connecting, the connector inserts earlier in the malleation connects the back again with the case contact, thereby the medical personnel operation of being convenient for.

Drawings

FIG. 1 is a schematic cross-sectional front view of the present invention;

FIG. 2 is a schematic diagram of a right-side cross-sectional structure of the main body according to the present invention;

fig. 3 is a schematic diagram of a right view structure of the valve core of the present invention.

In the figure: the hydraulic pressure type hydraulic pressure valve comprises a main body 1, a positive pressure joint 2, a connecting seat 3, a first connecting channel 4, a conical joint 5, a second connecting channel 6, a valve core 7, a sealing groove 8, a sealing ring 9, a sliding groove 10, a strip groove 11, a fixing plate 12, a connecting rod 13, a spring 14, a rod piece 15, a circular plate 16 and a sliding block 17.

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, the present invention provides a technical solution: a disposable venous indwelling needle positive-pressure three-way connector comprises a main body 1, wherein the main body 1 is a cylindrical cavity, one end of the main body 1 is fixedly connected with a positive-pressure connector 2, the positive-pressure connector 2 is cylindrical, the outer surface of the positive-pressure connector 2 is provided with an external thread, the other end of the main body 1 is provided with a connecting seat 3, the connecting seat 3 and the positive-pressure connector 2 are positioned on the same axis, a first connecting channel 4 is arranged inside the side wall of the main body 1, as shown in figure 1, the connecting seat 3 is communicated with the positive-pressure connector 2 through the first connecting channel 4, a conical connector 5 is fixedly connected with the side wall of the main body 1, a second connecting channel 6 is arranged between the conical connector 5 and the connecting seat 3, a valve core 7 is arranged on the inner surface of the main body 1 in a sliding manner, one end surface of the valve core 7, which is correspondingly far away from the connecting seat 3, is positioned inside the positive-pressure connector 2, the valve core 7 seals the positive pressure connector 2 under the action of the elastic piece, and meanwhile, after the connector is inserted, the valve core 7 moves under the action of stress, so that liquid medicine can flow into the connecting seat 3 through the first connecting channel 4, and after the connector is drawn out, the valve core 7 resets under the action of the elastic piece, so that positive pressure is generated inside the main body 1, the liquid medicine is injected into the connecting seat 3 through the first connecting channel 4, and liquid medicine or blood backflow is prevented.

Specifically, the valve element 7 is slidably connected to the inner surfaces of the positive pressure connector 2 and the main body 1, the two ends of the valve element 7 are respectively provided with a sealing groove 8, the sealing grooves 8 are respectively annular, the inner surface of each sealing groove 8 is provided with a sealing ring 9, one end of the first connecting channel 4 is located at one end of the inner surface of the main body 1, which is far away from the connecting seat 3, the other end of the first connecting channel 4 is connected to the connecting seat 3, one side surface of the valve element 7, which is close to the connecting seat 3, is provided with a strip-shaped groove 11, the inner surface of the strip-shaped groove 10 is slidably provided with a fixing plate 12, one end of the fixing plate 12, which is close to one side surface of the connecting seat 3, is fixedly connected with a connecting rod 13, the other end of the connecting rod 13 is connected to the connecting seat 3, and a spring 14 is arranged between the fixing plate 12 and the strip-shaped groove 11, the spring 14 forms stress, so that the valve core 7 is located at one end far away from the connecting seat 3, the fixing plate 12 is fixedly connected with the spring 14, and one end of the spring 14 far away from the fixing plate 12 is fixedly connected with the inner surface of the strip-shaped groove 11, so that when the fixing plate 12 moves along with the movement of the connecting rod 13, the valve core 7 also moves along with the movement.

Specifically, the connecting seat 3 is rotatably connected with the body 1, the connecting seat 3 is fixedly connected with a circular plate 16 through a rod member 15, the circular plate 16 is rotatably connected with the inner surface of the body 1, and the ends of the first connecting channel 4 and the second connecting channel 6, which are far away from the valve core 7, are respectively located between the connecting seat 3 and the circular plate 16, so that when the connecting seat 3 rotates, the first connecting channel 4 and the second connecting channel 6 can always be communicated with the connecting seat 3.

Particularly, the outer surface of connecting rod 13 is equipped with the external screw thread, connecting rod 13 runs through circular plate 16, connecting rod 13 with spiro union between the circular plate 16 to when rotating connecting seat 3, drive circular plate 16 and rotate thereupon, circular plate 16 rotates for connecting rod 13 promptly, and then drives connecting rod 13 and remove thereupon, adjusts the position of case 7, thereby is convenient for medical personnel to operate.

Specifically, the inner surface of the strip-shaped groove 11 is provided with a sliding block 17, and the surface of the fixing plate 12 is provided with a sliding slot 10 corresponding to the sliding block 17, so that when the circular plate 16 rotates, the connecting rod 13 does not rotate along with the rotation of the circular plate 16.

The working principle is as follows: when the blood pressure measuring device is used, the connector is inserted by the positive pressure connector 2, the valve core 7 moves along with the positive pressure connector, so that the connector is connected with the connecting seat 3 through the first connecting channel 4, when the connector is pulled out, the valve core 7 moves under the action of the spring 14, positive pressure is generated inside the main body 1, blood backflow is prevented through injection of the first connecting channel 4, the connecting seat 3 is rotated, the connecting seat 3 drives the circular plate 16 to rotate through the rod piece 15, the valve core 7 is driven to move to a proper position through thread matching, and operation of medical staff is facilitated.

In the description of the present invention, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "fixed" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral part; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

The standard parts used in the utility model can be purchased from the market, the special-shaped parts can be customized according to the description of the specification and the accompanying drawings, the specific connection mode of each part adopts conventional means such as bolts, rivets, welding and the like mature in the prior art, the machines, the parts and equipment adopt conventional models in the prior art, and the circuit connection adopts the conventional connection mode in the prior art, so that the detailed description is omitted.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the utility model, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides a needle malleation three way connection is kept somewhere to disposable vein, includes main part (1), its characterized in that: the utility model discloses a pressure welding device, including main part (1), the one end fixedly connected with malleation of main part (1) connects (2), the surface that malleation connects (2) is equipped with the external screw thread, the other end of main part (1) is equipped with connecting seat (3), the inside first connecting channel (4) that is equipped with of lateral wall of main part (1), first connecting channel (4) will connecting seat (3) with communicate between malleation connects (2), the lateral wall fixedly connected with taper joint (5) of main part (1), taper joint (5) with be equipped with second connecting channel (6) between connecting seat (3), the internal surface slip of main part (1) is equipped with case (7), case (7) are corresponding to be kept away from the one end surface of connecting seat (3) is located the inside that malleation connects (2).

2. The positive pressure tee fitting of a disposable venous indwelling needle according to claim 1, wherein: the valve element (7) is respectively connected with the positive pressure connector (2) and the inner surface of the main body (1) in a sliding manner, two ends of the valve element (7) are respectively provided with a sealing groove (8), the inner surface of the sealing groove (8) is respectively provided with a sealing ring (9), one end of the first connecting channel (4) is positioned at one end, far away from the connecting seat (3), of the inner surface of the main body (1), the other end of the first connecting channel (4) is connected with the connecting seat (3), one side surface, close to the connecting seat (3), of the valve element (7) is provided with a strip-shaped groove (11), the inner surface of the strip-shaped groove (11) is provided with a fixing plate (12) in a sliding manner, one side surface, close to the connecting seat (3), of the fixing plate (12) is fixedly connected with one end of a connecting rod (13), and the other end of the connecting rod (13) is connected with the connecting seat (3), and a spring (14) is arranged between the fixing plate (12) and the strip-shaped groove (11).

3. The positive pressure tee fitting of a disposable venous indwelling needle according to claim 2, wherein: the connecting seat (3) is rotatably connected with the main body (1), the connecting seat (3) is fixedly connected with a circular plate (16) through a rod piece (15), the circular plate (16) is rotatably connected with the inner surface of the main body (1), and one ends, far away from the valve core (7), of the first connecting channel (4) and the second connecting channel (6) are respectively located between the connecting seat (3) and the circular plate (16).

4. The positive pressure tee fitting of a disposable venous indwelling needle according to claim 3, wherein: the outer surface of connecting rod (13) is equipped with the external screw thread, connecting rod (13) run through circular plate (16), connecting rod (13) with the spiro union between circular plate (16).

5. The positive pressure tee fitting of a disposable venous indwelling needle according to claim 4, wherein: the inner surface of the strip-shaped groove (11) is provided with a sliding block (17), and the surface of the fixed plate (12) is provided with a sliding groove (10) corresponding to the sliding block (17).