Central venous pressure measuring device
Technical Field
The utility model relates to the technical field of central venous pressure measurement, in particular to a central venous pressure measurement device.
Background
The central venous pressure is the pressure of the upper and lower vena cava entering the right atrium, measured through the internal ducts of the upper and lower vena cava or the right atrium, reflects the right atrium pressure, is one of the main indexes of clinical observation hemodynamics, and is influenced by 3 factors of cardiac function, circulating blood volume and vascular tension. Blood pressure in the right atrium and great intrathoracic veins is commonly referred to as central venous pressure.
At present, hospitals do not have special equipment for measuring central venous pressure, and manual production is needed every time, so that the workload of medical staff is increased, bacteria are easily contacted on the equipment during production, too many pipelines are needed during use, unfamiliar medical staff easily make mistakes during use, and the measuring consumables are more.
Disclosure of utility model
The utility model aims to solve the problems in the prior art and provides a central venous pressure measuring device.
In order to achieve the above purpose, the present utility model adopts the following technical scheme:
The utility model provides a central venous pressure measuring device, includes the transfer line, the one end of transfer line is provided with the puncture ware of puncture normal saline bag, be provided with the drip chamber on the transfer line and control the flow regulator of drip chamber flow, the one end that the puncture ware was kept away from to the transfer line is connected with the three-way valve, two other interfaces swing joint of three-way valve have pressure measurement pipe and the venous catheter of being connected with central vein.
Preferably, the outer side of the puncture outfit is communicated with an exhaust pipe, and one end of the exhaust pipe, which is far away from the puncture outfit, is provided with an exhaust valve.
Preferably, one end of the pressure measuring tube far away from the three-way valve is connected with a piston cover, the piston cover comprises a rubber connecting sheet connected with the end part of the pressure measuring tube and a rubber plug connected with the rubber connecting sheet, and the outer side wall of the rubber plug is movably propped against the inner side wall of the pressure measuring tube.
Preferably, scale marks are arranged on the piezometer tube.
Preferably, the length interval of the piezometer tube is 30-40cm.
Preferably, the three-way valve comprises a valve body, a sealing ring movably connected in the valve body, a ball body arranged in the sealing ring and used for controlling the flow direction of liquid, and a handle connected with the ball body and rotated on the valve body.
Preferably, the device further comprises a support frame, wherein the support frame is provided with a support rod and a hook for hooking a physiological saline bag, and the pressure relief pipe is attached to the outer side of the support rod.
Compared with the prior art, the utility model provides a central venous pressure measuring device, which has the following beneficial effects:
1. This central venous pressure measuring device combines together transfer line, piezometer tube and intravenous catheter through the three-way valve, can directly carry out central venous pressure measurement to the patient, need not medical staff and dismantle the equipment to other pipes, and the consumable is many, the operation is complicated and the problem that the easy contact bacterium leads to the infection when having solved central venous pressure measurement.
Drawings
FIG. 1 is a schematic diagram of the structure of the present utility model;
FIG. 2 is a schematic cross-sectional view of a three-way valve according to the present utility model;
FIG. 3 is a schematic view of a pressure relief tube according to the present utility model;
fig. 4 is a schematic structural view of the present utility model when used with a support frame.
1, A transfusion tube, 101, a drip chamber, 102, a flow regulator, 2, a puncture outfit, 3, a three-way valve, 301, a valve body, 302, a sealing ring, 303, a sphere, 304, a handle, 4, a pressure measuring tube, 401, a scale mark, 5, a venous catheter, 6, a pressure release tube, 7, a piston cover, 701, a rubber connecting sheet, 702, a rubber plug, 8, a support frame, 801, a support rod, 802 and a hook.
Detailed Description
The technical solutions of the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model, and it is apparent that the described embodiments are only some embodiments of the present utility model, but not all embodiments, and all other embodiments obtained by those skilled in the art without making any inventive effort based on the embodiments of the present utility model are within the scope of the present utility model.
In the description of the present utility model, it should be noted that the positional or positional relationship indicated by the terms such as "upper", "lower", "inner", "outer", "top/bottom", etc. are based on the positional or positional relationship shown in the drawings, are merely for convenience of describing the present utility model and simplifying the description, and do not indicate or imply that the apparatus or elements 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 utility model. Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present utility model, unless explicitly specified and limited otherwise, the terms "mounted," "configured to," "engaged with," "connected to," and the like are to be construed broadly, and may be, for example, "connected" as well as "fixedly connected" as well as "detachably connected" or integrally connected, mechanically connected as well as electrically connected, directly connected as well as indirectly connected through an intermediate medium, and may be in communication with each other between two elements, as will be apparent to those skilled in the art, and the specific meaning of the terms in the present utility model will be understood in a specific manner.
1-4, A central venous pressure measuring device comprises a transfusion tube 1, wherein a puncture outfit 2 for puncturing a physiological saline bag is arranged at the upper end of the transfusion tube 1, an exhaust pipe 6 is communicated with the outer side of the puncture outfit 2, and an exhaust valve is arranged at one end of the exhaust pipe 6 far away from the puncture outfit 2. In this embodiment, one end of the pressure measuring tube 4 far away from the three-way valve 3 is connected with a piston cover 7, the piston cover 7 comprises a rubber connecting sheet 701 connected with the end of the pressure measuring tube 4 and a rubber plug 702 connected with the rubber connecting sheet 701, the rubber plug 702 adopts a boss structure, and the outer side wall of the rubber plug 702 is movably propped against the inner side wall of the pressure measuring tube 4. Be provided with the drip chamber 101 and control the flow regulator 102 of drip chamber 101 flow on the transfer line 1, the one end that keeps away from puncture ware 2 on the transfer line 1 is connected with three-way valve 3, and three-way valve 3 includes valve body 301, swing joint in valve body 301's sealing washer 302, sets up in sealing washer 302 and is used for controlling the spheroid 303 that liquid flowed to and links to each other and rotate the handle 304 on valve body 301 with spheroid 303. The other two interfaces of the three-way valve 3 are movably connected with a pressure measuring pipe 4 and a venous catheter 5 connected with a central vein. The pressure measuring tube 4 is provided with scale marks 401, and the length interval range of the pressure measuring tube 4 is 30 cm to 40cm.
The measuring device of this embodiment also includes support frame 8, is provided with bracing piece 801 on the support frame 8 and is used for the couple 802 of normal saline bag hook, and pressure release pipe 6 laminating is placed in the bracing piece 801 outside.
Specifically, when in use, the pressure measuring tube 4 is vertically stuck on the supporting rod 801, the zero position at the bottom of the graduation line 401 of the pressure measuring tube 4 is parallel to the horizontal axillary center line of the right atrium between the fourth ribs of a patient, then a physiological saline bag is hung on the hook 802 of the supporting frame 8, the infusion tube 1 is connected with the physiological saline bag through the puncture outfit 2, the patient is communicated with the intravenous catheter 5 through the infusion tube 1 to supplement liquid, when in venous pressure measurement, the intravenous catheter 5 is controlled to be closed firstly through the three-way valve 3, the infusion tube 1 is connected with the pressure measuring tube 4, the liquid in the infusion tube 1 is filled with the pressure measuring tube 4 to be higher than the expected venous pressure, then the infusion tube 1 is closed through the three-way valve 3, the intravenous catheter 5 is opened, the pressure measuring tube 4 is communicated with the intravenous catheter 5, when the liquid in the pressure measuring tube 4 is not lowered any more, the corresponding graduation value of the graduation line 401 of the liquid level is observed after the liquid in the pressure measuring tube is not lowered any more, namely the CVP value is not measured, the intravenous catheter 5 is closed, and the intravenous catheter 5 is communicated with the infusion tube 1 is continuously used for supplementing liquid.
According to the application, the infusion tube 1, the pressure measuring tube 4 and the venous catheter 5 are combined through the three-way valve 3, so that the central venous pressure measurement can be directly carried out on a patient, disassembly and assembly of other tubes are not required before the venous pressure is detected by medical staff, and the problems of multiple consumables, complex operation and easy contact with bacteria to cause infection during the central venous pressure measurement are solved.
The foregoing is only a preferred embodiment of the present utility model, but the scope of the present utility model is not limited thereto, and any person skilled in the art, who is within the scope of the present utility model, should make equivalent substitutions or modifications according to the technical scheme of the present utility model and the inventive concept thereof, and should be covered by the scope of the present utility model.