CN211583122U

CN211583122U - Infusion apparatus for measuring central venous pressure

Info

Publication number: CN211583122U
Application number: CN202020121168.9U
Authority: CN
Inventors: 赵煜华; 王俊霞; 吴田瑞; 付中岩
Original assignee: Zhengzhou University
Current assignee: Zhengzhou University
Priority date: 2020-01-19
Filing date: 2020-01-19
Publication date: 2020-09-29
Anticipated expiration: 2030-01-19

Abstract

The utility model discloses a transfusion device for measuring central venous pressure, which comprises a transfusion device body, wherein the transfusion device body comprises a transfusion hose, the transfusion hose is sequentially provided with a puncture outfit with an exhaust hole, a water stop part, a Murphy's dropper with an air inlet, a flow regulating switch, a filtering component and a connector from top to bottom, and the transfusion hose between the Murphy's dropper and the filtering component is provided with scale marks; the infusion apparatus body also comprises a protection structure for protecting the puncture outfit. The utility model has the advantages of ingenious structure, no need of pulling out the infusion apparatus body from the physiological saline bottle, and avoiding cross contamination caused by exposure; the zero scale value can be placed at the axillary midline of a patient, so that the initial measurement points of different nurses have uniform standards, and errors are reduced; the filtering component can automatically discharge the air in the transfusion hose, thereby simplifying the operation steps; after the measurement or the transfusion is finished, the puncture outfit can be inserted into the slot, so that the nurse is prevented from being punctured or the medical bag is prevented from being punctured.

Description

Infusion apparatus for measuring central venous pressure

Technical Field

The utility model relates to a medical instrument, in particular to an infusion apparatus for measuring central venous pressure.

Background

Central Venous Pressure (CVP) refers to the pressure at the junction of the vena cava and the right atrium. CVP reflects right atrial pressure, is one of the main indicators for clinical observation of hemodynamics, and is often used for auxiliary diagnosis of diseases such as hypovolemia or hypervolemia.

Currently, intensive care units are usually equipped with monitoring devices dedicated to monitoring CVP, and because of the high cost of these devices, in order to reduce the economic burden of patients, central iv lines are often used to measure CVP of patients. During measurement, the liquid medicine in the central venous transfusion pipeline of a patient is closed firstly to ensure that the whole transfusion pipeline is only physiological saline; then filling normal saline in the ordinary infusion apparatus, communicating the ordinary infusion apparatus with a three-way connector of a central venous infusion pipeline, pulling out a puncture outfit of the infusion apparatus from a normal saline bottle, straightening the infusion apparatus, and placing the lower end of the infusion apparatus in the axillary midline of a patient; when the flow regulating switch is turned on, the physiological saline in the infusion apparatus automatically descends, and when the liquid level in the infusion apparatus is unchanged, the liquid level height is measured from bottom to top by using the ruler. However, the above measurement process has the following problems: firstly, a puncture outfit at the top of an infusion set is exposed in the air in the measurement process, so that the hidden danger of pollution exists; when reading, a nurse carries the infusion tube with one hand and measures the infusion tube with the other hand by using a ruler, and the reading difficulty is high; the starting position of each nurse has errors, so that the reading of each different nurse has great deviation and poor repeatability; secondly, after the measurement is finished, if the infusion apparatus is used for infusion, the infusion apparatus needs to be exhausted again, so that the operation is complicated, and the nursing workload of medical staff is increased; thirdly, the puncture head lacks a protective structure, and is easy to puncture medical personnel or puncture medical recovery bags during recovery.

Disclosure of Invention

An object of the utility model is to provide an infusion apparatus for measuring central venous pressure has not only simplified CVP's measuring step, has still reduced the evaluation standard error.

In order to achieve the above purpose, the utility model adopts the following technical proposal:

the utility model discloses an infusion apparatus for measuring central venous pressure, including the infusion apparatus body, the infusion apparatus body includes the infusion hose, the infusion hose top-down sets gradually the puncture outfit in exhaust hole, stagnant water portion, the Murphy's dropper that has the air inlet, flow control switch, filtering component and connector, is provided with the scale mark on the infusion hose that is located between Murphy's dropper and the filtering component;

sterile films are arranged in the exhaust hole of the puncture outfit and the air inlet of the Murphy's dropper;

the water stopping part comprises a water stopping clamp which is arranged on the infusion hose in a penetrating way and is made of plastics, and a pair of clamping pieces used for clamping the infusion hose are symmetrically arranged on the inner surface of the water stopping clamp; one end of the water stop clamp is clamped in the limiting groove at the other end of the water stop clamp, so that the two clamping pieces are in a closed state to clamp the infusion hose;

one end of the connector is inserted in the infusion hose in a sealing manner, and a nut used for fixing an infusion needle or a catheter is integrally formed on the outer side of one end of the connector;

the filtering assembly comprises a shell which is hermetically communicated with the infusion hose, a filtering membrane used for filtering air is arranged in the shell, the filtering membrane divides the shell into a filtrate cavity and an exhaust cavity, an exhaust port is arranged on the exhaust cavity, and a sterile breathable membrane is arranged at the exhaust port; the liquid medicine flows into the exhaust cavity through the infusion hose, so that the gas in the infusion hose is exhausted through the exhaust port, and the liquid medicine enters the filtrate cavity through the filtering membrane;

the infusion apparatus body further comprises a protection structure for protecting the puncture outfit.

The protection structure comprises a protection cap made of elastic plastic, the bottom of the protection cap is provided with an insertion hole, the puncture outfit is provided with a buckle matched with the insertion hole, and the protection caps positioned at two sides of the insertion hole are provided with an anti-unhooking hook matched with a limiting edge on the puncture outfit.

The protection structure comprises a slot arranged on the flow regulating switch, and the puncture outfit is clamped in the slot.

The filtering membrane is an ionic membrane or a fiber membrane.

The length of the infusion hose between the Murphy's dropper and the filtering component is 25-40 cm.

The utility model has the advantages that the structure is ingenious, the transfusion device body is not required to be pulled out from the physiological saline bottle during measurement, the cross contamination caused by exposure is avoided, and the safety is improved; meanwhile, the zero scale value can be placed at the axillary midline of a patient, so that the initial measurement points of different nurses have uniform standards, and errors are reduced; when the transfusion is needed after the measurement, the air in the transfusion hose can be automatically exhausted by the filter assembly without pulling out the transfusion hose and then exhausting, so that the operation steps are simplified; after measurement or infusion are finished, the puncture outfit can be inserted into the slot, or a protective cap is sleeved on the puncture outfit, so that a nurse is effectively prevented from being punctured or a medical bag is prevented from being punctured, and the safety is high.

Drawings

Fig. 1 is a schematic structural diagram of the present invention.

Fig. 2 is an enlarged schematic view of the water stop portion of fig. 1.

Fig. 3 is an enlarged schematic view of the filter assembly of fig. 1.

Fig. 4 is a side view of the filter assembly of fig. 3.

Fig. 5 is another schematic structural diagram of the protection structure of the present invention.

Fig. 6 is a side view of fig. 5.

Detailed Description

The following describes embodiments of the present invention in detail with reference to the drawings, which are implemented on the premise of the technical solution of the present invention, and detailed embodiments and specific operation procedures are provided, but the scope of the present invention is not limited to the following embodiments.

As shown in fig. 1-4, the utility model discloses an infusion apparatus for measuring central venous pressure, including the infusion apparatus body, the infusion apparatus body includes infusion hose 1 and protection architecture, infusion hose 1 top-down has set gradually puncture ware 2, the stagnant water portion that has the exhaust hole, the Murphy's dropper 3.2 that has air inlet 3.1, flow control switch 4, filtering component and connector 5, is 30cm in the infusion hose length that lies in between Murphy's dropper 3.2 and the filtering component, and is provided with the scale mark, the scale interval increases from zero to top in proper order, and zero scale mark is located the filtering component top, will infuse the zero scale mark on the hose and put to patient's axillary midline department during the measurement, unified different nurse's initial measuring point, reduce the error;

sterile films are arranged in an exhaust hole of the puncture outfit 2 and an air inlet 3.1 of the Murphy's dropper 3.2 to prevent small particles in the air from entering the transfusion hose 1;

the water stopping part comprises a water stopping clamp 6.1 which is arranged on the infusion hose 1 in a penetrating way and is made of elastic plastics, a pair of clamping pieces 6.2 used for clamping the infusion hose 1 are symmetrically arranged on the inner surface of the water stopping clamp 6.1, an arc-shaped edge 6.3 is arranged at one end of the water stopping clamp 6.1 in an extending way, and a limiting groove is formed by a limiting table 6.4 on the inner surface of the water stopping clamp and the inner surface of the water stopping clamp 6.1 in a surrounding way; when the infusion hose is clamped, the other end of the water stop clamp 6.1 is clamped in the limiting groove, so that the two clamping pieces 6.2 are in a closed state to clamp the infusion hose 1; when the infusion hose is opened, the arc-shaped edge 6.3 is pulled upwards to enable the other end of the water stop clamp 6.1 to automatically pop up, and the infusion hose 1 is in a passage state;

one end of the connector 5 is hermetically inserted in the infusion hose 1, a screw cap 5.1 matched with a three-way connector of the central venous infusion pipeline is integrally formed on the outer side of one end of the connector, and the quick connection between the infusion hose 1 and the central venous infusion pipeline can be realized by directly screwing one connector of the three-way connector into the screw cap 5.1;

the filtering component comprises a shell 7.1 which is hermetically communicated with the infusion hose 1, a filtering membrane 7.2 (an ionic membrane or a fiber membrane) for filtering air is arranged in the shell 7.1, the filtering membrane 7.2 divides the shell 7.1 into a filtrate cavity and an exhaust cavity, an exhaust port 7.3 is arranged on the exhaust cavity, and a sterile breathable membrane with a through hole is arranged at the position of the exhaust port 7.3;

the liquid medicine flows into the exhaust cavity through the transfusion hose 1, so that the gas in the transfusion hose 1 is exhausted through the exhaust port 7.3, and the liquid medicine enters the filtrate cavity through the filtering membrane 7.2 and flows into the transfusion hose 1 at the lower part from the filtrate cavity.

As shown in fig. 1, the protection structure is a slot 9 (or may be provided in the flow control switch 4) provided on the outer side wall of the flow control switch 4, and after infusion or measurement is completed, the puncture instrument 2 is inserted into the slot.

In actual manufacture, the protective structure may also have the structure shown in fig. 5-6: the puncture outfit comprises a protective cap 8.1 (the protective cap 8.1 is formed by surrounding a top wall and three side walls) made of elastic plastic, the bottom of the middle side wall of the protective cap 8.1 is provided with a jack, the puncture outfit 2 is provided with a buckle 8.2 matched with the jack, and the side walls of the protective cap positioned at the two sides of the jack are provided with a pair of anti-falling hooks 8.4 matched with a limiting edge 8.3 on the puncture outfit 2. After infusion or measurement is finished, the infusion hose 1 is pulled out from the central venous infusion pipeline, the buckle 8.2 penetrates through the jack, the other two side walls of the protective cap are pulled outwards to be clamped on the puncture outfit 2, and the anti-disengaging hook 8.4 and the limiting edge 8.3 are clamped together to protect the puncture outfit 2 and prevent a nurse from being punctured or a medical recovery bag from being punctured.

During measurement, the puncture outfit 2 is inserted into a physiological saline bottle, the physiological saline bottle is hung on an infusion support, a flow regulating switch 4 is opened to enable the infusion hose 1 to be filled with physiological saline quickly, then the flow regulating switch 4 is closed, the infusion hose 1 is connected with a three-way joint of a central venous infusion pipeline into a whole by a connector 5, other passages of the central venous infusion pipeline are closed, then a 0-scale mark is placed at the axillary midline of the liquid of a patient, the flow regulating switch 4 is opened, the upper part of the infusion hose 1 is clamped by a water stop clamp 6.1, an air inlet 3.1 of a Murphy's dropper 3.2 is opened, the physiological saline automatically flows into the body of the patient, and when the liquid level in the infusion hose 1 does not change any more, the scale value is read, and the error is;

after the measurement is finished, if a patient needs to input other liquid medicines into the body by the infusion apparatus, the patient only needs to replace the physiological saline with the required liquid medicine, then the air inlet 3.1 of the Murphy's dropper 3.2 is closed, the water stop clamp 6.1 is opened, the infusion can be carried out, the filtering membrane 7.2 can ensure that the liquid smoothly passes through and block the gas, so that the gas is discharged from the exhaust port 7.3, and the automatic exhaust is realized; after the puncture outfit is used, the puncture outfit 2 is penetrated into the slot on the flow regulating switch 4, thereby avoiding puncturing medical care personnel and also avoiding puncturing the medical recovery bag.

In the description of the present invention, it should be noted that the terms "front", "back", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience in describing the present invention and simplifying the description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.

Claims

1. The utility model provides an infusion set for measuring central venous pressure, includes the infusion set body, its characterized in that: the infusion apparatus body comprises an infusion hose, the infusion hose is sequentially provided with a puncture outfit with an exhaust hole, a water stop part, a Murphy's dropper with an air inlet, a flow regulating switch, a filtering assembly and a connector from top to bottom, and scale marks are arranged on the infusion hose between the Murphy's dropper and the filtering assembly; sterile films are arranged in the exhaust hole of the puncture outfit and the air inlet of the Murphy's dropper;

2. The infusion set for measuring central venous pressure of claim 1, wherein: the protection structure comprises a protection cap made of elastic plastic, the bottom of the protection cap is provided with an insertion hole, the puncture outfit is provided with a buckle matched with the insertion hole, and the protection caps positioned at two sides of the insertion hole are provided with an anti-unhooking hook matched with a limiting edge on the puncture outfit.

3. The infusion set for measuring central venous pressure of claim 1, wherein: the protection structure comprises a slot arranged on the flow regulating switch, and the puncture outfit is clamped in the slot.

4. The infusion set for measuring central venous pressure of claim 1, wherein: the filtering membrane is an ionic membrane or a fiber membrane.

5. The infusion set for measuring central venous pressure of claim 1, wherein: the length of the infusion hose between the Murphy's dropper and the filtering component is 25-40 cm.