CN220833005U - Central venous pressure measuring device - Google Patents
Central venous pressure measuring device Download PDFInfo
- Publication number
- CN220833005U CN220833005U CN202321787950.4U CN202321787950U CN220833005U CN 220833005 U CN220833005 U CN 220833005U CN 202321787950 U CN202321787950 U CN 202321787950U CN 220833005 U CN220833005 U CN 220833005U
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- China
- Prior art keywords
- tube
- pressure measuring
- way valve
- pipe
- central venous
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- 238000001802 infusion Methods 0.000 claims abstract description 47
- 238000003780 insertion Methods 0.000 claims abstract description 4
- 230000037431 insertion Effects 0.000 claims abstract description 4
- 239000007788 liquid Substances 0.000 claims description 11
- 238000009530 blood pressure measurement Methods 0.000 claims description 7
- 238000000034 method Methods 0.000 claims description 2
- 238000005259 measurement Methods 0.000 abstract description 12
- 230000008901 benefit Effects 0.000 abstract description 3
- 230000001276 controlling effect Effects 0.000 description 6
- 239000002504 physiological saline solution Substances 0.000 description 6
- 230000000474 nursing effect Effects 0.000 description 4
- 210000005245 right atrium Anatomy 0.000 description 3
- 230000009471 action Effects 0.000 description 2
- 230000001746 atrial effect Effects 0.000 description 2
- 230000005484 gravity Effects 0.000 description 2
- 210000001631 vena cava inferior Anatomy 0.000 description 2
- 210000002620 vena cava superior Anatomy 0.000 description 2
- 238000005452 bending Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000008280 blood Substances 0.000 description 1
- 210000004369 blood Anatomy 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 239000003814 drug Substances 0.000 description 1
- 229940079593 drug Drugs 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 230000004217 heart function Effects 0.000 description 1
- 230000000004 hemodynamic effect Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 230000002792 vascular Effects 0.000 description 1
Landscapes
- Infusion, Injection, And Reservoir Apparatuses (AREA)
Abstract
The utility model discloses a central venous pressure measuring device, which comprises a transfusion tube and a CVC tube; the head end of the infusion tube is provided with an insertion tube for communicating with the infusion bag; the distinguishing features are that: the central venous pressure measuring device also comprises a pressure measuring tube and a three-way valve; the pressure measuring pipe is a transparent vertical pipe, and scales are arranged on the pipe wall of the pressure measuring pipe; the three connecting ends of the three-way valve are respectively connected with the tail end of the infusion tube, the tube orifice of the pressure measuring tube and the connector of the CVC tube, and the three-way valve is used for controlling the infusion tube to be communicated with the pressure measuring tube or controlling the pressure measuring tube to be communicated with the CVC tube. The utility model has the advantages of convenient operation and high measurement accuracy.
Description
Technical Field
The utility model relates to a measuring device, in particular to a central venous pressure measuring device.
Background
CVP is an abbreviation for central venous pressure, which is the pressure at which the superior and inferior vena cava enters the right atrium, measured through the superior and inferior vena cava or the right atrial catheter, and reflects the right atrial pressure, which is one of the main indicators of clinical observation of hemodynamics, and is affected by 3 factors, namely cardiac function, circulating blood volume and vascular tension.
The measurement of the CVP in the intensive care unit is provided with a professional CVP continuous detection instrument, when the patient state is improved to the ordinary ward and the CVP still needs to be measured, two nursing staff are generally required to cooperate for operation, and one operation method is as follows: the disposable infusion set is adopted to connect a physiological saline bag, one hand of a nursing staff fixes the infusion tube to a measurement zero position (positioned at the right atrium level), the other hand is used for separating the infusion bag from the infusion set and holding the infusion set to be vertical to the bed of a measured person, and when the physiological saline in the infusion set tube does not fall down any more, the liquid height in the infusion tube is measured, and because the infusion tube lacks scales, the other nursing staff is required to measure the reading value by using a ruler with the scales. Because two persons are needed to operate, under the condition that the number of clinical nursing staff is insufficient, CVP measurement work is difficult to carry out, the infusion tube is soft and is not easy to keep vertical, the zero position is fixed by hands, a ruler is taken to measure CVP values, larger errors can exist in measurement results, and the measurement steps are complicated.
In view of the above-mentioned possible problems, the present utility model provides a central venous pressure measuring device that is convenient to operate and capable of improving measurement accuracy.
Disclosure of utility model
The utility model aims to solve the technical problem of providing a central venous pressure measuring device which has the advantages of convenience in operation and high measuring accuracy.
In order to solve the technical problems, the utility model adopts the following technical scheme:
A central venous pressure measuring device, which comprises a transfusion tube and a CVC tube; the head end of the infusion tube is provided with an insertion tube for communicating with the infusion bag; the distinguishing features are that: the central venous pressure measuring device also comprises a pressure measuring tube and a three-way valve; the pressure measuring pipe is a transparent vertical pipe, and scales are arranged on the pipe wall of the pressure measuring pipe; the three connecting ends of the three-way valve are respectively connected with the tail end of the infusion tube, the tube orifice of the pressure measuring tube and the connector of the CVC tube, and the three-way valve is used for controlling the infusion tube to be communicated with the pressure measuring tube or controlling the pressure measuring tube to be communicated with the CVC tube.
Further, the three-way valve comprises a three-hole disc with a hollow structure, and the three connecting ends are uniformly arranged on the outer wall of the three-hole disc in a circumference manner; the inside of the three-hole disc is provided with a steering wheel with the diameter smaller than or equal to the inner diameter of the steering wheel, and the outside of the three-hole disc is provided with a rotating disc which is connected with the steering wheel and is used for controlling the steering wheel to rotate; the section of the steering wheel is fan-shaped, and only two connecting ends can be communicated.
Further, the three connecting ends of the three-way valve are arranged at an angle of 120 degrees.
Further, the rotating disc is provided with an indication arrow for indicating the flow direction of the liquid.
Further, the pipeline of the infusion tube and the pressure measuring tube is provided with a flow regulator; a Murphy type dropper is arranged on the pipeline of the infusion tube.
Further, the mouth of pipe that the three-way valve was kept away from to the piezometer pipe is provided with the tube cap, and the tube cap is the hollow structure that both ends link up, is provided with the filter screen in the tube cap.
The beneficial effects of the utility model are as follows:
According to the central venous pressure measuring device, during measurement, the infusion tube is conducted with the pressure measuring tube through the three-way valve, the cannula of the infusion tube is inserted into the infusion bag, physiological saline flows to the pressure measuring tube through the infusion tube, so that the pressure measuring tube is filled with the physiological saline, the pressure measuring tube is conducted with the CVC tube through the three-way valve, at the moment, liquid in the pressure measuring tube can be lowered under the action of gravity, when the liquid level is not changed, the numerical value of the central venous pressure can be read through the scale on the pressure measuring tube, the other medical staff is not required to hold the scale for measurement, labor is reduced, and the central venous pressure measuring device has the advantage of convenience in operation; and the pressure measuring pipe is a vertical pipe, so that compared with a hose, the pressure measuring pipe is easy to keep in a vertical state, the measuring error is reduced, and the measuring accuracy is improved.
Drawings
Fig. 1 is a schematic structural view of an embodiment of the present utility model.
Fig. 2 is an enlarged view of region a of fig. 1.
Fig. 3 is an exploded view of a three-way valve according to an embodiment of the present utility model.
Fig. 4 is a cross-sectional view of a three-way valve in a connected state of a pressure measuring tube and an infusion tube according to an embodiment of the present utility model.
Fig. 5 is a cross-sectional view of a three-way valve in a condition where a pressure measuring tube is in communication with a CVC tube according to an embodiment of the present utility model.
The reference numerals in the figures are: 1. an infusion tube; 11. a cannula; 2. a CVC tube; 3. a pressure measuring tube; 4. a three-way valve; 41. a three-hole disc; 42. a steering wheel; 43. a rotating disc; 44. an indication arrow; 5. a flow regulator; 6. a Murphy's dropper; 7. a tube cap; 71. and (5) a filter screen.
Detailed Description
The present utility model is described below with reference to the accompanying drawings, and the specific embodiments described herein are for illustrating and explaining the present utility model, not for limiting the present utility model, and various modifications and improvements made by those skilled in the art to which the present utility model pertains without departing from the spirit of the design of the present utility model, should fall within the scope of the present utility model.
As shown in fig. 1 to 5, the central venous pressure measuring device of the present embodiment includes an infusion tube 1, a CVC tube 2, a pressure measuring tube 3, and a three-way valve 4.
Wherein, the head end of the infusion tube 1 is provided with a cannula 11 for communicating with an infusion bag. The pipeline of the infusion tube 1 is provided with a flow regulator 5 and a Murphy's dropper 6, wherein the flow regulator 5 is used for regulating the flow rate of liquid, and the Murphy's dropper 6 is used for reflecting the flow rate of liquid, which are common articles in life.
The CVC tube 2, i.e. a central venous catheter, has one end connected to the patient's body and the other end provided with a connector for connecting an infusion set or syringe for injecting a drug or extracting a fluid into the patient.
The pressure measuring pipe 3 is a transparent vertical pipe, scales are arranged on the pipe wall of the pressure measuring pipe 3, the pressure measuring pipe 3 can adopt a hard vertical pipe, and bending of the pressure measuring pipe 3 can be effectively avoided when the pressure measuring pipe is used. The pipeline of the pressure measuring pipe 3 is provided with a flow regulator 5, and the flow regulator 5 can control the conduction and the closing of the pressure measuring pipe 3. The mouth of pipe that three-way valve 4 was kept away from to pressure measurement pipe 3 is provided with pipe cap 7, and pipe cap 7 is the hollow structure that both ends link up, is provided with filter screen 71 in the pipe cap 7, and the purpose of setting up filter screen 71 is that on the one hand can make this mouth of pipe and external air intercommunication for the liquid in the pipe can flow downwards, on the other hand prevents that great object from entering into pressure measurement pipe 3, the pollution abatement.
In general, the three-way valve 4 has three connection ends, and the three connection ends are respectively connected with the tail end of the infusion tube 1, the orifice of the pressure measuring tube 3 and the connector of the CVC tube 2, and the three-way valve 4 is used for controlling the infusion tube 1 to be conducted with the pressure measuring tube 3 or controlling the pressure measuring tube 3 to be conducted with the CVC tube 2.
In this embodiment, the three-way valve 4 includes a three-hole disk 41 with a hollow structure, wherein three connection ends are uniformly arranged on the outer wall of the three-hole disk 41 in a circumference, and the three connection ends are uniformly distributed at an angle of 120 °. The inside of the three-hole disc 41 is provided with a steering wheel 42 with the diameter smaller than or equal to the inside diameter, the outside of the three-hole disc 41 is provided with a rotating disc 43 which is connected with the steering wheel 42 and used for controlling the steering wheel 42 to rotate, and the rotating disc 43 is provided with an indication arrow 44 used for indicating the flowing direction of liquid. The cross section of the steering wheel 42 is a sector, the sector area is larger than 1/2 of the circle area and smaller than 2/3 of the circle area, the circle area is the value obtained by multiplying the square of the radius of the steering wheel 42 by pi, and at this time, after the steering wheel 42 rotates, the two connection ends can be communicated.
Also defined is that when rotating the rotating disc 43 such that the pointing arrow 44 points to the pressure tube 3, the pressure tube 3 and the infusion tube 1 are now conducting with each other, while the CVC tube 2 is not conducting; when the rotary disk 43 is rotated so that the indication arrow 44 points to the infusion tube 1, the infusion tube 1 and the CVC tube 2 are conducted with each other while the pressure measuring tube 3 is not conducted; when the rotating disc 43 is rotated such that the pointing arrow 44 points towards the CVC tube 2, the CVC tube 2 is now in conduction with the pressure tube 3 and the infusion tube 1 is not.
During measurement, the rotary disk 43 is rotated to conduct the infusion tube 1 and the pressure measuring tube 3, then the insertion tube 11 of the infusion tube 1 is inserted into the infusion bag, the hanging height of the infusion bag is ensured to be higher than the height of the tube cap 7 when the pressure measuring tube 3 is vertically upwards as much as possible, then physiological saline flows into the pressure measuring tube 3 through the infusion tube 1, the pressure measuring tube 3 is filled with the physiological saline, and the flow regulator 5 is closed to close a pipeline of the pressure measuring tube 3; then, the zero graduation line of the pressure measuring tube 3 is positioned at the measurement zero point position (positioned at the right atrium level), the pressure measuring tube 3 is vertical to the bed surface, the rotating disc 43 is rotated, the pressure measuring tube 3 is communicated with the CVC tube 2, the flow regulator 5 is opened, the pressure measuring tube 3 is communicated, at the moment, liquid in the pressure measuring tube 3 can be lowered under the action of gravity, when the liquid level is not changed, the numerical value of the central venous pressure can be read through graduations on the pressure measuring tube 3, the other medical staff is not required to hold the graduations for measurement, the labor is reduced, and the operation is convenient; and the pressure measuring pipe 3 is a vertical pipe, so that compared with a hose, the vertical state is easy to keep, the measuring error is reduced, and the measuring accuracy is improved.
Claims (6)
1. A central venous pressure measuring device, which comprises a transfusion tube (1) and a CVC tube (2); the head end of the infusion tube (1) is provided with an insertion tube (11) for communicating with an infusion bag; the method is characterized in that: the pressure measuring device also comprises a pressure measuring pipe (3) and a three-way valve (4); the pressure measuring pipe (3) is a transparent vertical pipe, and scales are arranged on the pipe wall of the pressure measuring pipe (3); three connecting ends of the three-way valve (4) are respectively connected with the tail end of the infusion tube (1), the tube orifice of the pressure measuring tube (3) and the connector of the CVC tube (2), and the three-way valve (4) is used for controlling the infusion tube (1) to be conducted with the pressure measuring tube (3) or controlling the pressure measuring tube (3) to be conducted with the CVC tube (2).
2. The central venous pressure measurement device of claim 1, wherein: the three-way valve (4) comprises a three-hole disc (41) with a hollow structure, and the three connecting ends are uniformly arranged on the outer wall of the three-hole disc (41) in a circumference manner; a steering wheel (42) with the diameter smaller than or equal to the inner diameter of the steering wheel is arranged in the three-hole disc (41), and a rotating disc (43) which is connected with the steering wheel (42) and used for controlling the steering wheel (42) to rotate is arranged outside the three-hole disc (41); the section of the steering wheel (42) is fan-shaped, and only two connecting ends can be communicated.
3. The central venous pressure measurement device of claim 2, wherein: the three connecting ends of the three-way valve (4) are arranged at an angle of 120 degrees.
4. The central venous pressure measurement device of claim 2, wherein: the rotating disc (43) is provided with an indication arrow (44) for indicating the flow direction of the liquid.
5. The central venous pressure measurement device of claim 1, wherein: the flow regulator (5) is arranged on the pipeline of the infusion tube (1) and the pressure measuring tube (3); a Murphy's dropper (6) is arranged on the pipeline of the infusion tube (1).
6. The central venous pressure measurement device of claim 1, wherein: the pipe orifice that three-way valve (4) was kept away from to piezometer tube (3) is provided with cap (7), and cap (7) are hollow structure that both ends link up, are provided with filter screen (71) in cap (7).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321787950.4U CN220833005U (en) | 2023-07-07 | 2023-07-07 | Central venous pressure measuring device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321787950.4U CN220833005U (en) | 2023-07-07 | 2023-07-07 | Central venous pressure measuring device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220833005U true CN220833005U (en) | 2024-04-26 |
Family
ID=90786076
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321787950.4U Active CN220833005U (en) | 2023-07-07 | 2023-07-07 | Central venous pressure measuring device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220833005U (en) |
-
2023
- 2023-07-07 CN CN202321787950.4U patent/CN220833005U/en active Active
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| GR01 | Patent grant | ||
| GR01 | Patent grant |