CN213155856U

CN213155856U - Pressure measuring pipe

Info

Publication number: CN213155856U
Application number: CN202021602501.4U
Authority: CN
Inventors: 王瑞舸; 贾海英; 郭锐
Original assignee: Shenzhen University General Hospital
Current assignee: Shenzhen University General Hospital
Priority date: 2020-08-04
Filing date: 2020-08-04
Publication date: 2021-05-11
Anticipated expiration: 2030-08-04

Abstract

The utility model discloses a piezometer tube, which comprises a piezometer tube body, a puncture liquid inlet cannula, a vent pipe with a cap, a Murphy drip cup and an exhaust filter membrane, wherein the top end of the piezometer tube body is sequentially communicated downwards; the manual switch is arranged on the piezometric tube body and is positioned between the puncture liquid inlet cannula and the vent tube with the cap; and the speed regulation switch is arranged on the pressure measuring pipe body and is positioned between the Murphy drip cup and the exhaust filter membrane. The embodiment of the utility model provides a pressure-measuring pipe is when surveying central venous pressure, through closing manual switch, opens simultaneously and takes cap breather pipe, separation transfer line and infusion bottle when having avoided the pressure measurement to prevent that the pressure-measuring pipe from being contaminated.

Description

Pressure measuring pipe

Technical Field

The utility model relates to the technical field of medical equipment, in particular to piezometric tube.

Background

In clinical medical activities, it is very common to measure central venous pressure or cerebrospinal fluid pressure, sometimes the central venous pressure needs to be measured many times in a short time according to the needs of the patient (such as cardiogenic shock patients), the central venous pressure has very important clinical significance in clinics, and the heart function, vascular tension and volume state of the patient can be judged by combining blood pressure, heart rate and the amount of inflow and outflow, so as to guide further fluid therapy. Particularly, in critical patients, central venous pressure is an indispensable monitoring item.

The central vein pressure measuring tube has the advantages that the central vein pressure measuring tube is used for measuring the central vein pressure in the prior art, but the existing central vein pressure measuring tube needs to be pulled out of a transfusion bottle when measuring the pressure, so that air in the central vein pressure measuring tube is discharged, the central vein pressure measuring tube is extremely easy to pollute in the exhaust process, and potential safety hazards are brought to the subsequent transfusion process.

Thus, the prior art has yet to be improved and enhanced.

SUMMERY OF THE UTILITY MODEL

In view of the weak point of the above-mentioned prior art, the utility model aims at providing a pressure-measuring pipe, the central vein pressure-measuring pipe that aims at solving among the prior art needs to separate and cause the contaminated problem of central vein pressure-measuring pipe with central vein pipe after the pressure measurement is accomplished.

The utility model provides a technical scheme that technical problem adopted as follows:

in a first aspect, the embodiment of the utility model provides a piezometer tube, which comprises a piezometer tube body, a puncture liquid inlet cannula, a vent pipe with a cap, a Murphy drip cup and an exhaust filter membrane, wherein the top end of the piezometer tube body is sequentially communicated downwards; the manual switch is arranged on the piezometric tube body and is positioned between the puncture liquid inlet cannula and the vent tube with the cap; and the speed regulation switch is arranged on the pressure measuring pipe body and is positioned between the Murphy drip cup and the exhaust filter membrane.

As a further improved technical scheme, in the pressure measuring pipe, the vent pipe with the cap comprises a vent straight pipe and a cap, one end of the vent straight pipe is communicated with the pressure measuring pipe body, and the other end of the vent straight pipe is detachably connected with the cap.

As a further improved technical scheme, the pressure measuring pipe further comprises a universal infusion adapter communicated with the bottom end of the pressure measuring pipe body.

As a further improved technical scheme, in the pressure measuring pipe, a scale area is arranged on a pressure measuring pipe body between the speed regulating switch and the exhaust filter membrane, and a zero scale line of the scale area is close to the exhaust filter membrane.

As a further improved technical scheme, in the pressure measuring pipe, the manual switch comprises a manual switch body and a manual button which is arranged on the manual switch body and is used for extruding the pressure measuring pipe body.

As a further improved technical scheme, in the piezometer tube, the speed regulating switch comprises a speed regulating switch body and a regulating roller arranged on the speed regulating switch body; the adjusting roller is connected with the pressure measuring pipe body in an abutting mode.

As a further improved technical scheme, in the piezometric tube, one end, far away from the top end of the piezometric tube body, of the puncture liquid inlet cannula is pointed.

Compared with the prior art, the embodiment of the utility model provides a have following advantage:

the pressure measuring tube provided by the embodiment of the utility model comprises a pressure measuring tube body, a puncture liquid inlet cannula, a vent pipe with a cap, a Murphy drip cup and an exhaust filter membrane, wherein the top end of the pressure measuring tube body is sequentially communicated downwards; the manual switch is arranged on the piezometric tube body and is positioned between the puncture liquid inlet cannula and the vent tube with the cap; and the speed regulation switch is arranged on the pressure measuring pipe body and is positioned between the Murphy drip cup and the exhaust filter membrane. The embodiment of the utility model provides a pressure-measuring pipe is when surveying central venous pressure, through closing manual switch, opens simultaneously and takes cap breather pipe, separation transfer line and infusion bottle when having avoided the pressure measurement to prevent that the pressure-measuring pipe from being contaminated.

Drawings

Fig. 1 is a schematic structural view of a pressure measuring tube provided by the present invention;

in the figure: 100. a pressure measuring pipe body; 200. puncturing a liquid inlet cannula; 300. a capped vent tube; 400. a Murphy drip cup; 500. an exhaust filter membrane; 600. a manual switch; 700. a speed regulating switch; 800. a universal transfusion adapter; 110. a scale zone; 310. a ventilation straight pipe; 320. capping; 610. a manual switch body; 620. a manual control button; 710. a speed regulating switch body; 720. and adjusting the roller.

Detailed Description

In order to make the objects, technical solutions and effects of the present invention clearer and clearer, the following description of the present invention will refer to the accompanying drawings and illustrate embodiments. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the invention.

In the embodiments and claims, the terms "a" and "an" can mean "one or more" unless the article is specifically limited.

In addition, if there is a description relating to "first", "second", etc. in the embodiments of the present invention, the description of "first", "second", etc. is for descriptive purposes only and is not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In addition, the technical solutions in the embodiments may be combined with each other, but it must be based on the realization of those skilled in the art, and when the technical solutions are contradictory or cannot be realized, the combination of the technical solutions should not be considered to exist, and is not within the protection scope of the present invention.

The first embodiment is as follows:

please refer to fig. 1, fig. 1 is a schematic structural diagram of a pressure measuring tube according to the present invention. Wherein the pressure measuring pipe comprises a pressure measuring pipe body 100; the puncture liquid inlet cannula 200, the vent pipe 300 with the cap, the Murphy drip cup 400 and the exhaust filter membrane 500 are sequentially communicated downwards from the top end of the piezometric tube body 100; the manual switch 600 is arranged on the piezometric tube body 100 and is positioned between the puncture liquid inlet cannula 200 and the capped vent tube 300; and a speed regulating switch 700 arranged on the pressure measuring tube body 100 and positioned between the Murphy drip cup 400 and the exhaust filter membrane 500.

In the embodiment of the present invention, the piezometric tube body 100 is cylindrical and is a hollow infusion tube, such as an infusion tube commonly used in medical instruments; the puncturing liquid inlet cannula 200 is used for puncturing an infusion bottle, for example, a common physiological saline bottle, and a bottle stopper for inserting the puncturing liquid inlet cannula 200 into the physiological saline is used to enable the physiological saline to flow into the pressure measuring pipe body 100 from the puncturing liquid inlet cannula 200, wherein, in order to facilitate smooth puncturing, one end of the puncturing liquid inlet cannula 200, which is far away from the top end of the pressure measuring pipe body 100, is in a pointed shape. The vent pipe with a cap 300 enables the inside of the pressure measuring pipe body 100 to be communicated with the atmosphere in an open state, and enables the physiological saline in the pressure measuring pipe body 100 to move downwards under the atmospheric pressure; the Murphy drip cup 400 is used for observing the flow speed of the physiological saline entering the piezometer tube body 100; the exhaust filter membrane 500 is used for blocking the normal saline in the pressure measuring pipe body 100 and exhausting the gas in the pressure measuring pipe body 100, and preventing the gas from continuously flowing downwards and entering a human body; the manual switch 600 is used for controlling whether the physiological saline in the infusion bottle flows into the pressure measuring pipe body 100; specifically, the speed regulating switch 700 is used for controlling the flow rate of the physiological saline in the Murphy drip cup 400 and controlling the on-off of the physiological saline in the Murphy drip cup 400 and the pressure measuring tube body 100 below.

Further, the capped vent pipe 300 comprises a vent straight pipe 310 and a cap 320, wherein one end of the vent straight pipe 310 is communicated with the pressure measuring pipe body 100, and the other end is detachably connected with the cap 320. Specifically, the ventilation straight tube 310 and the pressure measuring tube body 100 are arranged at an angle, and the other end of the ventilation straight tube 310 is far away from the pressure measuring tube body 100 and is arranged upwards, so that the physiological saline in the pressure measuring tube body 100 is prevented from flowing out of the ventilation straight tube 310. The cap 320 is detachably connected to the other end of the straight ventilation pipe 310, so as to prolong the service life of the cap 320.

More specifically, the speed regulation switch 700 is in an on state (the flow rate is small at this time) in a default state, and the speed regulation switch 700 includes a speed regulation switch body 710 and an adjusting roller 720 arranged on the speed regulation switch body 710; the adjusting roller 720 abuts against the piezometer tube body 100. The speed regulating switch body 710 is tapered, and a rolling rail (not shown) is further disposed on the speed regulating switch body 710, so that the regulating roller 720 rolls on the rolling rail. The different positions of the adjusting roller 720 on the rolling track enable the adjusting roller 720 to be abutted with the pressure measuring pipe body 100 to different degrees.

Furthermore, the utility model also comprises a universal transfusion adapter 800 communicated with the bottom end of the piezometric tube body 100. The universal infusion adapter 800 is used for connecting various interfaces or conduits, and is convenient for various pressure measurement operations. For example, the universal infusion adapter 800 is used to connect to a central venous catheter or a three-lumen catheter flush port.

Specifically, the manual switch 600 is turned off when operating, and is turned on when not operating. Specifically, the manual switch 600 is in an open state in a normal state, at this time, the puncturing liquid inlet cannula 200 is communicated with the infusion bottle to enable the physiological saline to flow into the Murphy drip cup 400, after the physiological saline in the Murphy drip cup 400 occupies most of the space, the speed regulating switch 700 is adjusted to increase the flow rate of the physiological saline flowing into the pressure measuring tube body 100 below from the Murphy drip cup 400, and the physiological saline flows into the central venous catheter or the three-cavity urinary catheter flushing interface. At this time, the manual switch 600 is closed to prevent the physiological saline in the infusion bottle from flowing into the Murphy drip cup 400 again, and the vent pipe 300 with the cap is opened at the same time, so that the atmospheric pressure drives the physiological saline in the Murphy drip cup 400 to be slowly input into the human body through the central venous catheter or the three-cavity urinary catheter flushing interface.

The manual switch 600 includes a manual switch body 610 and a manual button 620 disposed on the manual switch body 610 and used for pressing the pressure measuring tube body 100. In a normal state, when the manual switch 600 is not in an operating state, the manual button 620 is in a released state, and when the manual switch 600 is in an operating state, the manual button 620 is pressed to squeeze the pressure measuring tube body 100, so that physiological running water in the infusion bottle is prevented from flowing into the Murphy drip cup 400.

More specifically, a scale area 110 is arranged on the piezometer tube body 100 between the speed regulation switch 700 and the exhaust filter membrane 500, and a zero scale line of the scale area 110 is close to the exhaust filter membrane 500. When pressure is measured, the liquid level of the physiological saline in the pressure measuring tube body 100 corresponds to a certain scale mark of the scale area 110, and the required pressure value can be known by reading the numerical value of the scale mark.

The following is to the utility model provides a pressure-measuring pipe carries out the detailed description at the theory of operation when measuring central venous pressure:

1. the puncture liquid inlet cannula 200 of the middle piezometer tube is inserted into the bottle stopper of the physiological saline bottle, and the Murphy drip cup 400 is squeezed (the manual switch 600 is in an open state) to ensure that the physiological saline enters the Murphy drip cup 400 and occupies most space.

2. The speed regulating switch 700 is turned on to make the physiological saline in the physiological saline bottle enter the lower pressure measuring tube through the Murphy drip cup 400, the air in the tube is exhausted, and the pressure measuring tube is communicated with the central venous catheter (not shown in the figure) through the universal transfusion adapter 800 in time.

3. After the pressure measuring pipe is communicated with the central venous catheter, the speed regulating switch 700 is completely turned on after the physiological saline enters the central venous catheter to be washed, the manual switch 600 is turned off, and the cap 320 in the ventilation pipe 300 with the cap is turned on. Under atmospheric pressure, physiological saline is slowly infused into the human body through a central venous catheter.

4. The zero scale line of the scale area 110 is aligned with the heart plane of the patient, and then the pressure measuring tube body 100 is straightened, so that the pressure measuring tube body 100 is perpendicular to the horizontal plane or the ground.

5. When the saline in the graduated area 110 is substantially calm, the graduated value corresponding to the saline level can be read as the central venous pressure value. When the central venous pressure changes, the fluid level changes as well.

6. When the pressure measurement time is long and the blood flowing back into the central venous catheter and the pressure measurement pipe body 100 is large, the pressure measurement pipe body 100 and the central venous catheter should be flushed. The capped air tube 300 and the speed control switch 700 are turned off, the manual switch 600 is turned on, and the Murphy drip cup 400 is squeezed to allow the physiological saline to enter the Murphy drip cup 400 and occupy most of the space. The speed regulation switch 700 is turned on to complete the flushing operation; the normal saline enters the scale area 110, the liquid level of the normal saline in the scale area 110 for reading the central venous pressure gradually descends, when the liquid level descends to the position of the exhaust filter membrane 500, because the pressure of the liquid level in the pressure measuring tube body 100 is greater than the pressure of the external air, the liquid level stops descending, the air section above the liquid level of the normal saline for reading the central venous pressure is exhausted out of the pressure measuring tube body 100 through the exhaust filter membrane 500, and the liquid at the upper part of the air section gradually descends until the air is completely exhausted.

And (4) loosening the speed regulation manual switch 600 again, entering the flow of the step 3, and entering the pressure measurement mode again.

The following explains the working principle of the piezometer tube in measuring the bladder pressure in detail:

2. The speed regulation switch 700 is turned on to enable the physiological saline in the physiological saline bottle to enter the pressure measuring tube below through the Murphy drip cup 400, air in the pipeline is exhausted, and the pressure tube body 100 is communicated with the three-cavity urine tube flushing interface through the universal infusion adapter 800 in time.

3. After the pressure measuring pipe is communicated with the three-cavity catheter flushing port, the speed regulating switch 700 is completely turned on after the physiological saline enters the catheter for flushing, the manual switch 600 is turned off, and the ventilation pipe 300 with the cap is turned on. Under atmospheric pressure, 50-100ml of normal saline is infused into the bladder through the ureter.

4. The zero scale lines of the scale zone 110 are aligned with the patient's pubic symphysis and the pressure tube body 100 is then straightened so that the pressure tube body 100 is perpendicular to the horizontal plane or ground.

5. When the physiological saline in the graduated area 110 is basically calm, the scale value corresponding to the physiological saline level can be read. When the bladder pressure changes, the fluid level changes.

It should be noted that, the above is only two kinds of embodiments of the pressure measuring pipe provided by the present invention, the pressure measuring pipe can also be used for pressure measurement in different modes, and the actual measurement requirement can be determined in the actual use of course.

To sum up, the utility model provides a pressure measuring tube, which comprises a pressure measuring tube body, a puncture liquid inlet cannula, a vent pipe with a cap, a Murphy drip cup and an exhaust filter membrane, wherein the top end of the pressure measuring tube body is sequentially communicated downwards; the manual switch is arranged on the piezometric tube body and is positioned between the puncture liquid inlet cannula and the vent tube with the cap; and the speed regulation switch is arranged on the pressure measuring pipe body and is positioned between the Murphy drip cup and the exhaust filter membrane. The embodiment of the utility model provides a pressure-measuring pipe is when surveying central venous pressure, through closing manual switch, opens simultaneously and takes cap breather pipe, separation transfer line and infusion bottle when having avoided the pressure measurement to prevent that the pressure-measuring pipe from being contaminated.

Other embodiments of the invention will be apparent to those skilled in the art from consideration of the specification and practice of the invention disclosed herein. The present invention is intended to cover any variations, uses, or adaptations of the invention following, in general, the principles of the invention and including such departures from the present disclosure as come within known or customary practice within the art to which the invention pertains. It is intended that the specification and examples be considered as exemplary only, with a true scope and spirit of the invention being indicated by the following claims.

Claims

1. A piezometer tube is characterized by comprising a piezometer tube body, a puncture liquid inlet cannula, a vent pipe with a cap, a Murphy drip cup and an exhaust filter membrane, wherein the top end of the piezometer tube body is sequentially communicated downwards; the manual switch is arranged on the piezometric tube body and is positioned between the puncture liquid inlet cannula and the vent tube with the cap; and the speed regulation switch is arranged on the pressure measuring pipe body and is positioned between the Murphy drip cup and the exhaust filter membrane.

2. The pressure measuring tube according to claim 1, wherein the capped vent tube comprises a vent straight tube and a cap, one end of the vent straight tube is communicated with the pressure measuring tube body, and the other end of the vent straight tube is detachably connected with the cap.

3. The pressure measuring tube according to claim 1 further comprising a universal fluid transfer adapter in communication with the bottom end of the pressure measuring tube body.

4. The piezometer tube according to claim 1, wherein a scale area is provided on the piezometer tube body between the speed-regulating switch and the exhaust filter membrane, and a zero scale line of the scale area is close to the exhaust filter membrane.

5. The piezometer tube according to claim 1, wherein the manual switch comprises a manual switch body and a manual button provided on the manual switch body.

6. The piezometer tube according to claim 1, wherein said speed regulation switch comprises a speed regulation switch body and an adjustment roller disposed on said speed regulation switch body; the adjusting roller is connected with the pressure measuring pipe body in an abutting mode.

7. The piezometer tube according to claim 1, wherein the end of the puncturing liquid inlet cannula remote from the top end of the piezometer tube body is pointed.