CN216061531U

CN216061531U - Uninterrupted injection device

Info

Publication number: CN216061531U
Application number: CN202121982691.1U
Authority: CN
Inventors: 李晓; 李知; 胡明君
Original assignee: Guangyuan Central Hospital
Current assignee: Guangyuan Central Hospital
Priority date: 2021-08-23
Filing date: 2021-08-23
Publication date: 2022-03-18
Anticipated expiration: 2031-08-23

Abstract

The utility model discloses an uninterrupted injection device, relates to the field of injection pumps, and provides an injection device capable of basically realizing uninterrupted injection of a medicine. An uninterrupted injection device comprises an injection pump and an injector, wherein the injection pump comprises an injection pump main body and an injector driving structure; the injector is arranged on the injector driving structure and comprises an operation sheet; also comprises a liquid preparation device; the number of the injector driving structures and the number of the injectors are two, the two injector driving structures can work independently, the injector driving structures are provided with operation sheet grooves, the operation sheets are clamped in the operation sheet grooves, and the injector driving structures can drive the operation sheets to move in a reciprocating mode; the liquid distribution device comprises a three-way joint, an input one-way valve, an output one-way valve, an input joint and an output joint, wherein three ports of the three-way joint are respectively connected with the input one-way valve and the output one-way valve of the injector, the input joint is connected with the input one-way valve, and the output joint is connected with the output one-way valve.

Description

Uninterrupted injection device

Technical Field

The utility model relates to the field of injection pumps, in particular to an uninterrupted injection device.

Background

The injection pump is a medical appliance used for slowly, slightly and accurately injecting the liquid medicine into the body of a patient. The existing injection pump comprises an injection pump main body and an injector driving structure, when in use, a common injector sucking liquid medicine is arranged on the injector driving structure, the injector driving structure drives a piston rod of the injector to slowly move forwards to slowly push out the liquid medicine at a constant speed, so that the slow, micro and accurate medicine injection is realized. The above-mentioned injection pumps are disclosed in patent ZL202022021898.4 and ZL 201921694967.9.

Clinically, some liquid medicines need to be slowly injected into a human body for a long time, and after the liquid medicines in the syringe of the injection pump are injected, the injection pipeline needs to be detached, an empty syringe needs to be taken down, the syringe which sucks the liquid medicines is replaced, and then the injection pipeline is connected. The above operation inevitably causes interruption of liquid medicine injection, and uninterrupted injection cannot be realized; the syringe has smaller capacity, shorter replacement interval and more frequent operation.

SUMMERY OF THE UTILITY MODEL

The technical problem to be solved by the utility model is as follows: an injection device is provided that enables substantially uninterrupted injection of a medicament.

The technical scheme adopted for solving the problems is as follows: an uninterrupted injection device comprises an injection pump and an injector, wherein the injection pump comprises an injection pump main body and an injector driving structure; the injector is arranged on the injector driving structure and comprises an operation sheet; also comprises a liquid preparation device; the number of the injector driving structures and the number of the injectors are two, the two injector driving structures can work independently, the injector driving structures are provided with operation sheet grooves, the operation sheets are clamped in the operation sheet grooves, and the injector driving structures can drive the operation sheets to move in a reciprocating mode; the liquid distribution device comprises a three-way joint, an input one-way valve, an output one-way valve, an input joint and an output joint, wherein three ports of the three-way joint are respectively connected with the input one-way valve and the output one-way valve of the injector, the input joint is connected with the input one-way valve, and the output joint is connected with the output one-way valve.

Further, the method comprises the following steps: the syringe pump includes an infusion suspension device.

Further, the method comprises the following steps: infusion linkage includes connecting seat and transfusion rod, and the one end at syringe pump main part top is connected to the connecting seat, and transfusion rod is articulated with the connecting seat, and transfusion rod can rotate to level or vertical, and transfusion rod sets up along syringe pump main part length direction when rotatory to the level, has the couple on the transfusion rod.

Further, the method comprises the following steps: the transfusion hanging device comprises a first limiting rod and a second limiting rod; the connecting seat is provided with a U-shaped groove, the end part of the transfusion rod is positioned in the U-shaped groove and is hinged with the connecting seat, the first limiting rod is transversely arranged and is connected with the connecting seat, and the second limiting rod is hinged with the connecting seat; when the transfusion rod is vertical, the second limiting rod rotates to be transversely arranged, and the first limiting rod and the second limiting rod are respectively located on two sides of the transfusion rod and limit the transfusion rod to rotate together.

The utility model has the beneficial effects that: in use, as shown in fig. 4, the fluid bag is suspended and connected to the two input connectors by a tube. Then an operation piece is manually pulled to enable a piston of a syringe to move backwards to suck liquid medicine, an input one-way valve of a liquid distribution device connected with the syringe is opened in the process, and an output one-way valve is closed. The two syringes are then mounted on the two syringe drive structures. Then the injection pump is started, an injector driving structure drives an operation sheet of an injector connected with the injector to move forwards, a piston of the injector moves forwards to output liquid medicine, an input one-way valve of a corresponding liquid preparation device is closed, and an output one-way valve is opened; the other syringe driving structure drives the operation sheet of the syringe connected with the syringe to move backwards, the piston of the syringe moves backwards to suck the liquid medicine, the input one-way valve of the corresponding liquid distribution device is opened, and the output one-way valve is closed. After that, the piston of the syringe reciprocates, one syringe sucks the liquid medicine all the time, and the other syringe outputs the liquid medicine, so that the liquid is continuously output until the liquid in the liquid bag is completely output. When the liquid in the liquid bag is completely transported, the liquid bag is replaced. The utility model can realize the continuous injection of liquid basically except the short-time interruption of the injection when the liquid bag is replaced and the continuous injection of liquid in other time. The liquid bag has large capacity and low replacement frequency; when the liquid bag is changed, the new liquid bag is hung, the plug connected with the empty liquid bag is pulled out and inserted into the new liquid bag, and the operation is convenient and quick.

Drawings

FIG. 1 is a block diagram of an uninterrupted injection device;

FIG. 2 is a view of the syringe and dispensing device;

FIG. 3 is a cross-sectional view A-A of FIG. 1;

FIG. 4 is a view of the uninterrupted injection device in use;

FIG. 5 is a diagram of a state in which the syringe pump performs a normal injection;

labeled as: the infusion pump comprises an infusion pump 1, an infusion pump main body 1-1, an injector driving structure 1-2, an operation sheet groove 1-2-1, an infusion suspension device 1-3, an infusion rod 1-3-1, a connecting seat 1-3-2, a U-shaped groove 1-3-2-1, a hook 1-3-3, a first limiting rod 1-3-4, a second limiting rod 1-3-5, an injector 2, an injection tube 2-1, a piston 2-2, a piston rod 2-3, an operation sheet 2-4, a liquid distribution device 3, a three-way joint 3-1, an input one-way valve 3-2, an output one-way valve 3-3, an input joint 3-4, an output joint 3-5 and a liquid bag 4.

Detailed Description

The utility model is further described with reference to the following figures and detailed description.

An uninterrupted injection device comprises an injection pump 1 and an injector 2, wherein the injection pump 1 comprises an injection pump main body 1-1 and an injector driving structure 1-2; the injector 2 is arranged on the injector driving structure 1-2, and the injector 2 comprises an operation piece 2-4; also comprises a liquid preparation device 3; the number of the injector driving structures 1-2 and the number of the injectors 2 are two, the two injector driving structures 1-2 can work independently, the injector driving structures 1-2 are provided with operation sheet grooves 1-2-1, the operation sheets 2-4 are clamped in the operation sheet grooves 1-2-1, and the injector driving structures 1-2 can drive the operation sheets 2-4 to move in a reciprocating mode; the liquid distribution device 3 comprises a three-way joint 3-1, an input one-way valve 3-2, an output one-way valve 3-3, an input joint 3-4 and an output joint 3-5, three ports of the three-way joint 3-1 are respectively connected with the input one-way valve 3-2 and the output one-way valve 3-3 of the injector 2, the input joint 3-4 is connected with the input one-way valve 3-2, and the output joint 3-5 is connected with the output one-way valve 3-3.

The utility model improves the injector driving structure 1-2 and adds a liquid preparation device 3. The injector 2 is not modified and is a conventional injector, as shown in fig. 2, the injector comprises an injection cylinder 2-1, a piston 2-2, a piston rod 2-3 and an operation piece 2-4, and the operation piece 2-4 is used for pushing and pulling by hands when the injector 2 is used conventionally. The existing syringe driving structure 1-2 has a structure capable of reciprocating, but the existing syringe driving structure 1-2 can only push the operation piece 2-4, the piston rod 2-3 and the piston 2-2 forward, and the reciprocating structure thereof is moved backward for resetting. The utility model is provided with the operation sheet groove 1-2-1, and the operation sheet 2-4 is clamped in the operation sheet groove 1-2-1, so that the injector driving structure 1-2 can drive the operation sheet 2-4 to reciprocate, thereby driving the piston rod 2-3 and the piston 2-2 to reciprocate. The common injection pump 1 is provided with only one injector driving structure 1-2; there are also infusion pumps 1 having two syringe drive arrangements 1-2, such as the syringe pump 1 disclosed in ZL 201921694967.9. The two syringe drive arrangements 1-2 can operate independently so that it is possible for one syringe drive arrangement 1-2 to drive the operating plate 2-4 of one syringe 2 forward whilst the other syringe drive arrangement 1-2 drives the operating plate 2-4 of the other syringe 2 rearward. The input one-way valve 3-2 is a valve which can be opened towards the inside of the three-way joint 3-1 in one way, and the output one-way valve 3-3 is a valve which can be opened towards the outside of the three-way joint 3-1 in one way.

In use, as shown in fig. 4, the fluid bag 4 is suspended and connected to the fluid bag 4 and the two inlet connectors 3-4 by a pipe. Then an operation piece 2-4 is manually pulled to enable a piston 2-2 of a syringe 2 to move backwards to suck liquid medicine, an input one-way valve 3-2 of a liquid distribution device 3 connected with the syringe 2 is opened in the process, and an output one-way valve 3-3 is closed. Two syringes 2 are then mounted on the two syringe drive mechanisms 1-2. Then the injection pump 1 is started, an injector driving structure 1-2 drives an operation sheet 2-4 of an injector 2 connected with the injector to move forwards, a piston 2-2 of the injector 2 moves forwards to output liquid medicine, an input one-way valve 3-2 of a corresponding liquid preparation device 3 is closed, and an output one-way valve 3-3 is opened; the other syringe driving structure 1-2 drives an operation piece 2-4 of the syringe 2 connected with the syringe driving structure to move backwards, a piston 2-2 of the syringe 2 moves backwards to suck liquid medicine, an input one-way valve 3-2 of the corresponding liquid distribution device 3 is opened, and an output one-way valve 3-3 is closed. Thereafter, the pistons 2-2 of the syringes 2 reciprocate, and one syringe 2 sucks the liquid medicine all the time, and the other syringe 2 outputs the liquid medicine, so that the liquid is continuously output until the liquid in the liquid bag 4 is completely output. When the liquid in the liquid bag 4 is completely infused, the liquid bag 4 is replaced. The utility model can realize the continuous injection of the liquid basically except for the short-time interruption of the injection when the liquid bag 4 is replaced and the continuous injection of the liquid in other time. The liquid bag 4 has large capacity and low replacement frequency; when the liquid bag 4 is replaced, the new liquid bag 4 is hung, the plug connected with the empty liquid bag 4 is pulled out and inserted into the new liquid bag 4, and the operation is convenient and quick.

As previously mentioned, the present invention is intended for use with a hanging fluid bag 4. The fluid bag 4 can be hung from an existing stand, but takes up a lot of space and requires long piping connecting the fluid bag 4 and the input connectors 3-4. To this end, the preferred infusion pump 1 of the present invention includes an infusion suspension device 1-3. As shown in FIG. 4, the infusion hanging device 1-3 is used for hanging the liquid bag 4, so that an infusion support can be omitted; the liquid bag 4 does not need to be hung very high and is slightly higher than the injection pump main body 1-1, and the pipeline connecting the liquid bag 4 and the input joint 3-4 is very short.

The specific structure of the infusion suspension device 1-3 is preferably as follows: the infusion suspension device 1-3 comprises a connecting seat 1-3-2 and an infusion rod 1-3-1, the connecting seat 1-3-2 is connected to one end of the top of an injection pump main body 1-1, the infusion rod 1-3-1 is hinged to the connecting seat 1-3-2, the infusion rod 1-3-1 can rotate to be horizontal or vertical, the infusion rod 1-3-1 is arranged along the length direction of the injection pump main body 1-1 when rotating to be horizontal, and a hook 1-3-3 is arranged on the infusion rod 1-3-1. When the transfusion device is used, the transfusion rod 1-3-1 is rotated to be upright, and the liquid bag 4 can be hung. As shown in FIG. 5, when not in use, the transfusion rod 1-3-1 is rotated to be horizontal, and the occupied space is small. The length of the transfusion rod 1-3-1 is close to that of the injection pump body 1-1, and the transfusion rod does not exceed the injection pump body 1-1 when rotated to be horizontal.

The transfusion rod 1-3-1 is required to be positioned when rotating to be vertical, and various positioning modes can be specifically provided. The preferred positioning mode of the utility model is shown in figure 3, and an infusion hanging device 1-3 comprises a first limiting rod 1-3-4 and a second limiting rod 1-3-5; the connecting seat 1-3-2 is provided with a U-shaped groove 1-3-2-1, the end part of the transfusion rod 1-3-1 is positioned in the U-shaped groove 1-3-2-1 and is hinged with the connecting seat 1-3-2, the first limiting rod 1-3-4 is transversely arranged and is connected with the connecting seat 1-3-2, and the second limiting rod 1-3-5 is hinged with the connecting seat 1-3-2; when the transfusion rod 1-3-1 is vertical, the second limiting rod 1-3-5 rotates to be arranged transversely, and the first limiting rod 1-3-4 and the second limiting rod 1-3-5 are respectively positioned at two sides of the transfusion rod 1-3-1 and limit the transfusion rod 1-3-1 to rotate together. The second limiting rod 1-3-5 is rotated to the vertical direction, so that the transfusion rod 1-3-1 can be unblocked, and the transfusion rod 1-3-1 can be rotated to the horizontal direction.

The present invention enables not only the uninterrupted injection but also the ordinary injection, which can be performed without mounting the liquid device 3 as shown in fig. 5.

Claims

1. An uninterrupted injection device comprises an injection pump (1) and an injector (2), wherein the injection pump (1) comprises an injection pump main body (1-1) and an injector driving structure (1-2); the injector (2) is arranged on the injector driving structure (1-2), and the injector (2) comprises an operation sheet (2-4); the method is characterized in that: comprises a liquid preparation device (3); the number of the injector driving structures (1-2) and the number of the injectors (2) are two, the two injector driving structures (1-2) can work independently, the injector driving structures (1-2) are provided with operation sheet grooves (1-2-1), the operation sheets (2-4) are clamped in the operation sheet grooves (1-2-1), and the injector driving structures (1-2) can drive the operation sheets (2-4) to move in a reciprocating mode; the liquid distribution device (3) comprises a three-way connector (3-1), an input one-way valve (3-2), an output one-way valve (3-3), an input connector (3-4) and an output connector (3-5), three ports of the three-way connector (3-1) are respectively connected with the input one-way valve (3-2) and the output one-way valve (3-3) of the injector (2), the input connector (3-4) is connected with the input one-way valve (3-2), and the output connector (3-5) is connected with the output one-way valve (3-3).

2. An uninterruptable injection device as claimed in claim 1, wherein: the injection pump (1) comprises an infusion suspension device (1-3).

3. An uninterruptable injection device as claimed in claim 2 wherein: the infusion suspension device (1-3) comprises a connecting seat (1-3-2) and an infusion rod (1-3-1), the connecting seat (1-3-2) is connected to one end of the top of the injection pump main body (1-1), the infusion rod (1-3-1) is hinged to the connecting seat (1-3-2), the infusion rod (1-3-1) can rotate to be horizontal or vertical, the infusion rod (1-3-1) is arranged along the length direction of the injection pump main body (1-1) when rotating to be horizontal, and a hook (1-3-3) is arranged on the infusion rod (1-3-1).

4. An uninterruptable injection device as claimed in claim 3 wherein: the transfusion hanging device (1-3) comprises a first limiting rod (1-3-4) and a second limiting rod (1-3-5); the connecting seat (1-3-2) is provided with a U-shaped groove (1-3-2-1), the end part of the transfusion rod (1-3-1) is positioned in the U-shaped groove (1-3-2-1) and hinged with the connecting seat (1-3-2), the first limiting rod (1-3-4) is transversely arranged and connected with the connecting seat (1-3-2), and the second limiting rod (1-3-5) is hinged with the connecting seat (1-3-2); when the transfusion rod (1-3-1) is vertical, the second limiting rod (1-3-5) rotates to be arranged transversely, and the first limiting rod (1-3-4) and the second limiting rod (1-3-5) are respectively positioned on two sides of the transfusion rod (1-3-1) and limit the transfusion rod (1-3-1) to rotate together.