Positive pressure device for remaining needle

Abstract

The utility model relates to a positive pressure device for an indwelling needle, belongs to the technical field of medical instruments, and solves the problem that the existing indwelling needle is easy to block. The device comprises a liquid bag, a communicating pipe and a control valve, wherein heparin water is contained in the liquid bag; one end of the communicating pipe is connected with the liquid bag, and the other end is connected with the remaining needle; the control valve is arranged on the communicating pipe and used for controlling the communicating pipe to be connected and disconnected and controlling the flow of heparin water in the liquid bag; the liquid bag is an elastic bag; the communicating pipe is opened through the control valve, heparin water can be injected into the indwelling needle through the communicating pipe under the action of contraction force of the liquid bag, and positive-pressure liquid flowing in the indwelling needle is kept. According to the indwelling needle, liquid is continuously fed into the indwelling needle, positive-pressure liquid flowing is kept in the indwelling needle, blood backflow can be effectively prevented, blood platelets, blood coagulation substances and the like can be prevented from depositing in the indwelling needle and forming thrombus when the indwelling needle stays for a long time, and therefore the tube sealing effect on the indwelling needle is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to medical instrument technical field especially, and it is a kind of positive pressure device for indwelling needle. BACKGROUND

[0002] Infusion therapy is a common treatment in modern medicine, for patients who need frequent infusion in a short time, using indwelling needle to infuse can reduce the pain and fear of injection caused by repeated intravenous puncture, alleviate the anxiety of family members, facilitate clinical medication, rescue medication for critical patients, reduce the workload of nurses, and reduce patient pain, so intravenous indwelling needle is widely used in clinic.

[0003] The existing indwelling needle needs to be retained in the patient's body for a long time when in use, and the patient's bed activity is reduced, which can slow down or stagnate the venous blood flow, the patient's body or disease factors (diabetes, high blood lipids, high blood pressure, etc.) can make the body in a high coagulation state, and the blood backflow caused by the impact of flowing blood, which can easily cause the indwelling needle to be blocked; The existing indwelling needle adopts a positive pressure connector tube sealing method, that is, when the indwelling needle is in a non-use state, a positive pressure liquid is sealed in the indwelling needle through the positive pressure connector to prevent blood from flowing back into the indwelling needle, avoid the formation of thrombus, and make the indwelling needle blocked; The positive pressure connector is used for sealing, and no positive pressure liquid flows in the indwelling needle, and when the indwelling needle is retained for a long time, platelets and coagulation substances will still deposit in the indwelling needle, thereby forming thrombus and making the indwelling needle blocked. CONTENT OF THE UTILITY MODEL

[0004] In view of the above analysis, the utility model aims to provide a positive pressure device for indwelling needle to solve the problem that the existing indwelling needle is easy to be blocked.

[0005] The utility model mainly aims to realize the following technical scheme:

[0006] A positive pressure device for indwelling needle, comprising a liquid capsule, a communication pipe and a control valve, the liquid capsule contains heparin water; one end of the communication pipe is connected with the liquid capsule, and the other end is connected with the indwelling needle; the control valve is arranged on the communication pipe, for controlling the on-off of the communication pipe and the flow of heparin water in the liquid capsule; the liquid capsule is an elastic capsule; the communication pipe is opened by the control valve, and the heparin water can be injected into the indwelling needle through the communication pipe under the contraction force of the liquid capsule, so that the positive pressure liquid in the indwelling needle keeps flowing.

[0007] Further, it further comprises a pressure stabilizing assembly, and the pressure stabilizing assembly is used for providing stable contraction force for the contraction of the liquid capsule.

[0008] Further, the pressure stabilizing assembly comprises an air pump and a shell, the shell has a pressure stabilizing cavity, and the air pump is communicated with the pressure stabilizing cavity.

[0009] Further, the liquid bag is arranged in the pressure stabilizing cavity.

[0010] Further, a main pipe is further arranged, two ends of the main pipe are connected with the infusion device and the indwelling needle respectively.

[0011] Further, the main pipe is further connected with the communication pipe.

[0012] Further, the main pipe further comprises an anti-reflux valve.

[0013] Further, a fixing plate is further arranged, the fixing plate is used for mounting the liquid bag, the communication pipe, the control valve, the pressure stabilizing assembly and the main pipe, and is connected with the patient's body.

[0014] Further, a bandage is further arranged, the bandage is used for fixedly connecting with the patient's body.

[0015] Further, the bandage is connected with the fixing plate.

[0016] The technical scheme of the utility model can realize at least one of the following effects:

[0017] (1) the utility model discloses a kind of positive pressure device for indwelling needle, including liquid bag, communication pipe and control valve, heparin water is contained in the liquid bag;The one end of the communication pipe is connected with the liquid bag, and the other end is connected with the indwelling needle;The control valve is arranged on the communication pipe, for controlling the on-off of communication pipe and the flow of heparin water in liquid bag;The liquid bag is elastic bag;By opening the communication pipe of control valve, heparin water can be injected into indwelling needle in the contraction force of liquid bag, so that the positive pressure liquid in indwelling needle keeps flowing;The utility model realizes that liquid is continuously given to indwelling needle by liquid bag contraction, so that the positive pressure liquid in indwelling needle keeps flowing, not only can effectively prevent blood reflux, but also can prevent platelet, coagulation material etc. in indwelling needle deposition when indwelling needle is long time detained, prevent thrombus from being formed, thereby improve the sealing pipe effect of indwelling needle, and indwelling needle long time detained is not easy to be blocked.

[0018] (2) the utility model further includes pressure stabilizing assembly, the pressure stabilizing assembly includes air pump and shell, the shell has pressure stabilizing cavity, the liquid bag is arranged in the pressure stabilizing cavity;The air pump is communicated with the pressure stabilizing cavity, and the contraction of liquid bag is provided with constant pressure by injecting gas into the pressure stabilizing cavity by air pump, so as to realize the stable contraction of liquid bag, and then realize the stable injection of heparin water in indwelling needle, so that the pressure and flow of heparin water injected into indwelling needle always keep stable;In addition, the mode of compressing liquid bag by injecting gas into the pressure stabilizing cavity belongs to flexible compression, has certain buffering effect, makes the soft change of liquid bag after being pressed, can effectively prevent the sharp change caused when rigidly compressing liquid bag, so that the pressure and flow of heparin water injected into indwelling needle are more stable.

[0019] The above technical solutions can be combined with each other to realize more optional combination solutions. Other features and advantages of the present application will be described in the following description, and some advantages can be apparent from the description or can be understood by implementing the present application. The purposes and other advantages of the present application can be realized and obtained from the contents particularly pointed out in the description and the drawings. BRIEF DESCRIPTION OF DRAWINGS

[0020] The drawings are only for the purpose of illustrating specific embodiments and are not considered as limiting the present application, and in the whole drawings, the same reference signs represent the same parts.

[0021] Figure 1 is a sectional view of the positive pressure device of the embodiment of the present application;

[0022] Figure 2 is a structural schematic view of the positive pressure device of the embodiment of the present application.

[0023] Reference signs:

[0024] 1, liquid bag; 2, communication pipe; 3, control valve; 4, air pump; 5, shell; 6, main pipe; 7, fixed sheet; 8, bandage. DETAILED DESCRIPTION

[0025] The preferred embodiments of the present application will be described in detail below with reference to the drawings, wherein the drawings form a part of the present application and are used to explain the principles of the present application together with the embodiments of the present application, and are not used to limit the scope of the present application.

[0026] One specific embodiment of the present application is a positive pressure device for a remaining needle, as shown in Figure 1 which comprises a liquid bag 1, a communication pipe 2 and a control valve 3, the liquid bag 1 contains heparin water; one end of the communication pipe 2 is connected with the liquid bag 1, and the other end is connected with the remaining needle; the control valve 3 is arranged on the communication pipe 2, and is used to control the on-off of the communication pipe 2 and the flow of the heparin water in the liquid bag 1; the liquid bag 1 can be automatically contracted, and the heparin water can be injected into the remaining needle through the contraction of the liquid bag 1, so that the remaining needle can keep the positive pressure liquid flowing; compared with the prior art, the liquid bag 1 is continuously supplied to the remaining needle through the contraction, so that the remaining needle can keep the positive pressure liquid flowing, which not only can effectively prevent the blood backflow, but also can prevent the platelets, coagulation substances and the like from depositing in the remaining needle when the remaining needle is long-stayed, and prevent the formation of thrombus, so as to improve the sealing effect of the remaining needle, and the long-stayed remaining needle is not easy to be blocked.

[0027] Preferably, the liquid bag 1 is an elastic balloon, and the heparin water is injected into the indwelling needle through the elastic balloon by its own elastic force, so that the positive pressure liquid in the indwelling needle flows.

[0028] Preferably, since the liquid bag 1 is contracted by its own elastic force, at the beginning, the elastic force of the liquid bag 1 is large, and the contraction force is strong, so that the pressure and flow of the heparin water injected into the indwelling needle are large, and as the liquid bag 1 contracts, the elastic force of the liquid bag 1 becomes smaller, and the contraction force becomes weaker, so that the pressure and flow of the heparin water injected into the indwelling needle become smaller, so that the pressure and flow of the heparin water injected into the indwelling needle are unstable; in order to solve the above technical defects, the positive pressure device further comprises a pressure stabilizing assembly, which is used to provide a stable contraction force for the contraction of the liquid bag 1, so that the liquid bag 1 injects the heparin water into the indwelling needle with a stable contraction force, so that the pressure and flow of the heparin water injected into the indwelling needle remain stable, and the sealing effect of the indwelling needle is further improved.

[0029] Preferably, as shown in Figure 2 the pressure stabilizing assembly comprises a gas pump 4 and a housing 5, the housing 5 has a pressure stabilizing cavity, and the liquid bag 1 is arranged in the pressure stabilizing cavity; the gas pump 4 communicates with the pressure stabilizing cavity, and the gas pump 4 injects gas into the pressure stabilizing cavity to provide a constant pressure for the contraction of the liquid bag 1, so as to realize stable contraction of the liquid bag 1, and then realize stable injection of the heparin water into the indwelling needle, so that the pressure and flow of the heparin water injected into the indwelling needle remain stable; in addition, the way of compressing the liquid bag 1 by injecting gas into the pressure stabilizing cavity belongs to flexible compression, which has a certain buffering effect, so that the liquid bag 1 changes softly after being pressed, which can effectively prevent the sharp change caused by rigidly compressing the liquid bag 1, so that the pressure and flow of the heparin water injected into the indwelling needle are more stable.

[0030] Preferably, the positive pressure device further comprises a main pipe 6, the main pipe 6 comprises a liquid inlet end and a liquid outlet end, the liquid inlet end is connected with the infusion device, the liquid outlet end is connected with the indwelling needle, and the liquid outlet end is further connected with the communication pipe 2, so that the positive pressure device can be used alone with the indwelling needle or used with the infusion pipeline, and the flexibility of the positive pressure device is improved.

[0031] Preferably, the main pipe 6 further comprises an anti-reflux valve, and the anti-reflux valve is provided with two anti-reflux valves respectively arranged at the liquid inlet end and the liquid outlet end.

[0032] Preferably, the positive pressure device further comprises a fixing sheet 7, and the liquid bag 1, the communication pipe 2, the control valve 3, the pressure stabilizing assembly and the main pipe 6 are fixedly installed on the fixing sheet 7, so that the positive pressure device can be conveniently connected with the patient's body through the fixing sheet 7.

[0033] Preferably, the positive pressure device further comprises a bandage 8 connected with the fixing sheet 7, through which the positive pressure device can be further fixedly connected with the patient's body to prevent the positive pressure device from moving and causing adverse consequences.

[0034] Preferably, the control valve 3 is a ball valve, and the control valve 3, the air pump 4 and the anti-backflow valve are all existing devices.

[0035] The above is only a preferred specific implementation of the present application, but the protection scope of the present application is not limited to this, any person skilled in the art can easily think of changes or replacements within the technical range disclosed by the present application, which should be covered within the protection scope of the present application.

Claims

1. A positive pressure device for a catheter needle, characterized in that The application relates to a heparin water injection device, which comprises a liquid bag (1), a communication pipe (2) and a control valve (3), the liquid bag (1) containing heparin water; one end of the communication pipe (2) is connected with the liquid bag (1), and the other end is connected with a retention needle; the control valve (3) is arranged on the communication pipe (2) and is used for controlling the opening and closing of the communication pipe (2) and the flow of the heparin water in the liquid bag (1); the liquid bag (1) is an elastic bag; the heparin water can be injected into the retention needle through the communication pipe (2) under the contraction force of the liquid bag (1) by opening the communication pipe (2) through the control valve (3), so that the retention needle can keep a positive pressure liquid flowing.

2. The positive pressure device for a catheter needle according to claim 1, wherein The application further comprises a pressure stabilizing assembly which is used for providing a stable contraction force for the contraction of the liquid bag (1).

3. A positive pressure device for a catheter needle as defined in claim 2, characterized in that The pressure stabilizing assembly comprises a gas pump (4) and a shell (5), the shell (5) has a pressure stabilizing cavity, and the gas pump (4) is communicated with the pressure stabilizing cavity.

4. The positive pressure device for a catheter needle according to claim 3, wherein The liquid bag (1) is arranged in the pressure stabilizing cavity.

5. A positive pressure device for a catheter needle as defined in claim 4, wherein The application further comprises a main pipe (6), two ends of the main pipe (6) are respectively connected with an infusion device and the retention needle.

6. A positive pressure device for a catheter needle as defined in claim 5, characterized in that The main pipe (6) is further connected with the communication pipe (2).

7. A positive pressure device for a catheter needle as defined in claim 6, characterized in that The main pipe (6) further comprises an anti-reflux valve.

8. A positive pressure device for a catheter needle as defined in claim 7, characterized in that The application further comprises a fixing sheet (7) which is used for mounting the liquid bag (1), the communication pipe (2), the control valve (3), the pressure stabilizing assembly and the main pipe (6) and connecting with a patient's body.

9. A positive pressure device for a catheter needle as defined in claim 8, characterized in that The application further comprises a bandage (8) which is used for fixedly connecting with the patient's body.

10. A positive pressure device for a catheter needle as defined in claim 9, characterized in that The bandage (8) is connected with the fixing sheet (7).

Images