Central venous pressure measuring device

Abstract

The utility model provides a central venous pressure measuring device, which belongs to the field of medical machinery and comprises a saline bag, a main pipeline, a water delivery pipe section, an air inlet pipe section and an exhaust pipe section, the first end of the main pipeline is used for being detachably connected with a central venous catheter, and a scale identification layer is arranged on the middle pipe section of the main pipeline; one end of the water conveying pipe section is fixed and communicated with the second end of the main pipeline, and the other end of the water conveying pipe section is detachably connected with the saline bag; one end of the air inlet pipe section is fixed and communicated with the second end of the main pipeline; one end of the exhaust pipe section is fixed and communicated with the main pipeline, and the other end of the exhaust pipe section is arranged close to the first end of the main pipeline. The utility model has the beneficial effects that the main pipeline, the water delivery pipe section, the exhaust pipe section, the air inlet pipe section and the scale identification layer are designed into a whole, two infusion pipes and one graduated scale in the prior art are replaced, the steps of connecting a tee joint with each component and installing the main pipeline on the graduated scale are omitted, the connection is convenient, and the efficiency is high.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of medical apparatus and instruments, and particularly relates to a central venous pressure measuring device. BACKGROUND

[0002] Central venous pressure (CVP) is the pressure at the entrance of superior and inferior vena cava into right atrium, which is measured through the superior and inferior vena cava or the right atrium built-in tube, and it reflects the right atrium pressure and is one of the main indexes for clinically observing blood dynamics.

[0003] Generally, the steps for measuring central venous pressure are as follows: 1) puncture the internal jugular vein of a patient and place a central venous catheter; 2) a medical staff member takes a measuring device, which includes two infusion tubes, a three-way joint, a saline bag and a scale, wherein the two infusion tubes, the three-way joint and the saline bag are disposable; 3) fix the scale on an infusion stand, hang the saline bag on the infusion stand, connect the first communication port of the three-way joint with the central venous catheter, connect the second communication port of the three-way joint with one end of the first infusion tube, connect the third communication port of the three-way joint with the second infusion tube, connect the other end of the first infusion tube with the saline bag, open the air vent of the second infusion tube to make the second infusion tube communicate with the outside, and set the second infusion tube on the clamping groove of the scale; 4) adjust the patient's lying position and the position of the scale to make the zero scale line of the scale keep the same level with the right atrium of the patient; 5) the medical staff member rotates the rotary valve for the first time to make the central venous catheter communicate with the first infusion tube, close the passage of the second infusion tube, input saline, and observe whether the saline in the first infusion tube flows smoothly; 6) the medical staff member rotates the rotary valve for the second time to close the passage of the central venous catheter, make the first infusion tube communicate with the second infusion tube, input saline, and discharge the air in the first infusion tube and the second infusion tube; 7) the medical staff member rotates the rotary valve for the third time to close the passage of the first infusion tube, make the central venous catheter communicate with the second infusion tube, and observe the height of the saline column corresponding to the value of the scale, which is the value of the measured central venous pressure.

[0004] In the above steps 2) and 3), the measuring device includes two infusion tubes, a three-way joint, a saline bag and a scale which are separately arranged, and the medical staff member needs to connect them in sequence, so that there are too many connection places, the operation is complicated, and the efficiency is low. UTILITY MODEL CONTENTS

[0005] To overcome the problems of existing measuring devices, which consist of two separate infusion tubes, a T-connector, a saline bag, and a ruler, requiring medical staff to install them sequentially, resulting in numerous connections, cumbersome operation, and low efficiency, this invention provides a central venous pressure measuring device for connecting to a central venous catheter and measuring central venous pressure. The central venous pressure measuring device includes:

[0006] saline bags;

[0007] The main pipe includes a first end and a second end that are disposed opposite to each other. The first end of the main pipe is used to be detachably connected to the central venous catheter. A scale marking layer is provided in the middle section of the main pipe, or a scale ruler is fixed on the outer surface of the middle section of the main pipe, and a scale marking layer is provided on the scale ruler. The setting direction of the scale marking layer corresponds to the extension direction of the middle section of the main pipe.

[0008] A water supply pipe section, one end of which is fixed and connected to the second end of the main pipe, and the other end of which is detachably connected to the saline bag;

[0009] An intake pipe section, one end of which is fixed and connected to the second end of the main pipe, and the intake pipe section and the main pipe extend in the same direction;

[0010] An exhaust pipe section, one end of which is fixed to and connected to the main pipe, and one end of which is located near the first end of the main pipe.

[0011] Preferably, an air intake device is fixed at the other end of the air intake pipe section;

[0012] A drain plug is fixed at the other end of the exhaust pipe section.

[0013] Preferably, a first water-stop clamp is provided on the water supply pipe section, a second water-stop clamp is provided on the air inlet pipe section, and a third water-stop clamp is provided on the exhaust pipe section.

[0014] Preferably, a flow regulator is also provided on the main pipeline, and the flow regulator is located near the first end of the main pipeline.

[0015] Preferably, the outer surface of the middle section of the main pipe is fixed to the front of the scale, and the front of the scale is also provided with the scale marking layer, which is located near the edge of the main pipe, and the zero mark on the scale marking layer corresponds to the first end of the main pipe.

[0016] Preferably, the central venous pressure measuring device further includes an infusion stand, and a positioning plate is provided in the middle of the infusion stand. The back of the positioning plate is fixedly connected to the infusion stand, and a strip magnetic sheet is fixed on the front of the positioning plate.

[0017] The back of the scale is fixed with several evenly spaced iron sheets, the back of the scale is provided with the front of the positioning plate, the iron sheet and the magnetic sheet are corresponding and adsorbed.

[0018] Preferably, the width of the positioning plate is greater than the width of the scale, and the length of the positioning plate is greater than the length of the scale.

[0019] The width of the magnetic sheet is greater than the width of the scale, and the length of the magnetic sheet is greater than the length of the scale.

[0020] Preferably, the outer periphery of the main pipeline is further provided with two hard collars, and the two hard collars are provided in one-to-one correspondence with the two ends of the scale mark layer, or the two hard collars are provided in one-to-one correspondence with the two ends of the scale, and the two hard collars and the infusion stand are detachably connected through magic tape.

[0021] Preferably, the top of the infusion stand is provided with a hook for hanging the saline bag.

[0022] Preferably, the other end of the water delivery pipe section is provided with a bottle plug piercer for plugging with the saline bag, and the first end of the main pipeline is threadedly connected with the central venous catheter.

[0023] Beneficial effects:

[0024] The beneficial effects of the technical scheme of the utility model are as follows:

[0025] (1) The middle pipe section of the main pipeline is provided with a scale mark layer, or the outer surface of the middle pipe section of the main pipeline is fixed with a scale, and the scale is provided with a scale mark layer, one end of the water delivery pipe section is fixed and communicated with the second end of the main pipeline, one end of the air inlet pipe section is fixed and communicated with the second end of the main pipeline, and the air inlet pipe section and the main pipeline extend in the same direction, one end of the air outlet pipe section is fixed and communicated with the main pipeline, and the other end of the air outlet pipe section is arranged close to the first end of the main pipeline, the main pipeline, the water delivery pipe section, the air outlet pipe section, the air inlet pipe section and the scale mark layer are designed as an integral whole, instead of two infusion pipes and a scale in the prior art, when the central venous pressure is measured, only the first end of the main pipeline and the central venous catheter need to be connected, the middle pipe section of the main pipeline or the scale is fixed on the infusion stand, and the saline bag is hung on the infusion stand, the other end of the water delivery pipe section is connected with the saline bag, the steps of connecting the three-way joint with each component and installing the main pipeline on the scale are omitted, the operation is simple and efficient, and the saline bag is used to input saline into the main pipeline.

[0026] (2) the second end of the main pipeline is fixed and communicated with the air inlet pipe section, when the air inlet pipe section is communicated with the outside, the air pressure above the brine column in the main pipeline is equal to the atmospheric pressure; the air outlet pipe section is arranged close to the first end of the main pipeline, when the air outlet pipe section is communicated with the outside, the air outlet pipe section is used for discharging the air in the main pipeline; the setting direction of the scale mark layer corresponds to the extension direction of the middle pipe section of the main pipeline, so that the height value of the brine column in the main pipeline is observed.

[0027] When the device is applied to the scene of central venous pressure determination, the medical staff fixes the middle pipe section or the scale of the main pipeline on the infusion support, hangs the brine bag on the infusion support, connects the other end of the water supply pipe section with the brine bag, connects the first end of the main pipeline with the central venous catheter, completes the connection and installation of each component of the device, adjusts the patient's lying position, adjusts the position of the middle pipe section or the scale of the main pipeline, so that the zero scale of the scale mark layer is kept on the same level with the right atrium of the patient, and then the determination operation is performed. BRIEF DESCRIPTION OF DRAWINGS

[0028] In order to more clearly illustrate the technical scheme of the embodiments of the present application, the following will briefly introduce the drawings needed to be used in the embodiments, and it should be understood that the following drawings only show some embodiments of the present application, and therefore should not be regarded as a limitation to the scope, and for those skilled in the art, other related drawings can also be obtained without creative labor on the basis of these drawings.

[0029] Fig. 1 It is a structural schematic view of the central venous pressure determination device of the present application;

[0030] Fig. 2 It is a structural schematic view of the back of the scale of the present application;

[0031] Fig. 3 It is a structural schematic view of the infusion support and the positioning plate of the present application;

[0032] In the drawings:

[0033] 1-saline bag, 2-main pipe, 2a-first end of main pipe, 2b-second end of main pipe, 201-hard ferrule, 202-magic tape, 203-flow regulator, 3-water delivery pipe section, 301-first water stop clamp, 302-bottle plug piercer, 4-air inlet pipe section, 401-air inlet device, 402-second water stop clamp, 5-air outlet pipe section, 501-drainage plug, 502-third water stop clamp, 6-ruler, 6a-front of ruler, 6b-back of ruler, 601-ruler mark layer, 602-iron sheet, 7-infusion stand, 701-hook, 8-positioning plate, 8a-front of positioning plate, 801-magnetic sheet. DETAILED DESCRIPTION

[0034] In order to make the purpose, technical scheme and advantages of the embodiments of the present application clearer, the technical scheme of the embodiments of the present application will be described clearly and completely below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are some of the embodiments of the present application, rather than all the embodiments of the present application. Therefore, the following detailed description of the embodiments of the present application provided in the drawings is not intended to limit the scope of the claimed present application, but only represents selected embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative work fall within the scope of the present application.

[0035] Reference should be made to Figs. 1 to 3The utility model provides a central venous pressure measuring device for and central venous catheter connection and measure central venous pressure, central venous pressure measuring device includes saline bag 1, main pipeline 2, water delivery pipe section 3, air inlet pipe section 4 and exhaust pipe section 5, main pipeline 2 includes first end and second end of opposite setting, and the middle pipe section of main pipeline 2 is provided with scale mark layer 601, or, the outer surface of the middle pipe section of main pipeline 2 is fixed with scale 6, be provided with scale mark layer 601 on scale 6, one end of water delivery pipe section 3 and the second end 2b of main pipeline fixed and communicate, one end of air inlet pipe section 4 and the second end 2b of main pipeline fixed and communicate, and air inlet pipe section 4 and main pipeline 2 same direction extension, one end of exhaust pipe section 5 and main pipeline 2 fixed and communicate, and one end of exhaust pipe section 5 is close to the first end 2a of main pipeline and sets up, five of main pipeline 2, water delivery pipe section 3, exhaust pipe section 5, air inlet pipe section 4 and scale mark layer 601 are designed into an organic whole, replace two infusion tubes and a scale 6 in prior art, when central venous pressure measurement, only need to connect the first end 2a of main pipeline and central venous catheter, the middle pipe section of main pipeline 2 or scale 6 is fixed on infusion support 7, and saline bag 1 is hung on infusion support 7, another end of water delivery pipe section 3 and saline bag 1 are connected, and the steps of connecting three ways and each component and installing main pipeline 2 on scale 6 are less, simple operation, high efficiency, saline bag 1 is used to input saline to main pipeline 2, air inlet pipe section 4 and the second end 2b of main pipeline fixed and communicate, when air inlet pipe section 4 communicates with outside, make the air pressure above saline column in main pipeline 2 equal atmospheric pressure, exhaust pipe section 5 is close to the first end 2a of main pipeline and sets up, when exhaust pipe section 5 and outside communicate, be used for discharging the air in main pipeline 2, the setting direction of scale mark layer 601 corresponds with the extension direction of the middle pipe section of main pipeline 2, and the height value of saline column in main pipeline 2 is convenient for observation,The utility model is applied to the scene of central venous pressure determination, medical staff fixes the middle pipe section or scale 6 of main pipe 2 on infusion support 7, hangs saline bag 1 on infusion support 7, connects the other end of water supply pipe section 3 and saline bag 1, connects the first end 2a of main pipe and central venous catheter, completes the connection and installation of each component of device, adjusts patient lying position, adjusts the position of middle pipe section or scale 6 of main pipe 2, makes the zero scale of scale mark layer 601 keep same level with patient right atrium, then carries out determination operation, first, medical staff makes water supply pipe section 3, main pipe 2 and central venous catheter communicate, closes the passage of air inlet pipe section 4 and the passage of exhaust pipe section 5, inputs saline, and observes whether the saline in main pipe 2 flows smoothly, then, medical staff closes the passage of central venous catheter and the passage of air inlet pipe section 4, makes water supply pipe section 3, main pipe 2 and exhaust pipe section 5 communicate, inputs saline, and exhausts the air in main pipe 2, finally, closes the passage of water supply pipe section 3 and exhaust pipe section 5, makes central venous catheter, main pipe 2 and air inlet pipe section 4 communicate, and the saline column height in main pipe 2 drops until stopping, observes the height of saline column corresponding to the value of scale mark layer 601, that is, the value of central venous pressure, completes determination operation.

[0036] As a preferred implementation, the other end of the air inlet pipe section 4 is fixed with an air inlet device 401; the other end of the air outlet pipe section 5 is fixed with a drainage plug 501. The water delivery pipe section 3 is provided with a first water stop clamp 301 for controlling whether the water delivery pipe section 3 is open or not, the air inlet pipe section 4 is provided with a second water stop clamp 402 for controlling whether the air inlet pipe section 4 is open or not, and the air outlet pipe section 5 is provided with a third water stop clamp 502 for controlling whether the air outlet pipe section 5 is open or not. The main pipeline 2 is also provided with a flow regulator 203, which is arranged close to the first end 2a of the main pipeline, for controlling the speed of the saline water input from the saline bag 1 to the main pipeline 2. The central venous catheter is provided with a fourth water stop clamp for controlling whether the central venous catheter is open or not; when the utility model is applied to the scene of central venous pressure determination, the medical staff first opens the first water stop clamp 301 and the fourth water stop clamp, closes the second water stop clamp 402 and the third water stop clamp 502, so that the water delivery pipe section 3, the main pipeline 2 and the central venous catheter are communicated, the channel of the air inlet pipe section 4 and the channel of the air outlet pipe section 5 are closed, the saline water is input, and whether the saline water in the main pipeline 2 flows smoothly is observed, then the first water stop clamp 301 and the third water stop clamp 502 are opened, the second water stop clamp 402 and the fourth water stop clamp are closed, so that the channel of the central venous catheter and the channel of the air inlet pipe section 4 are closed, the water delivery pipe section 3, the main pipeline 2 and the air outlet pipe section 5 are communicated, the saline water is input, and the air in the main pipeline 2 is discharged, finally, the second water stop clamp 402 and the fourth water stop clamp are opened, the first water stop clamp 301 and the third water stop clamp 502 are closed, so that the channel of the water delivery pipe section 3 and the channel of the air outlet pipe section 5 are closed, the central venous catheter, the main pipeline 2 and the air inlet pipe section 4 are communicated, the saline water column height in the main pipeline 2 drops until it stops, the height of the saline water column corresponding to the numerical value of the scale mark layer 601 is observed, that is, the numerical value of the central venous pressure, and the determination operation is completed.

[0037] As a preferred implementation, the outer surface of the middle pipeline section of the main pipeline 2 is fixed on the front surface 6a of the scale, and the front surface 6a of the scale is also provided with a scale mark layer 601, which is arranged close to the edge of the main pipeline 2, so as to facilitate the observation of the height of the saline water column, and the zero scale on the scale mark layer 601 corresponds to the first end 2a of the main pipeline.

[0038] As a preferred embodiment, the central venous pressure measuring device further comprises a drip stand 7, and a positioning plate 8 is further arranged at the middle part of the drip stand 7, the back surface of the positioning plate 8 is fixedly connected with the drip stand 7, and a strip-shaped magnetic sheet 801 is fixedly arranged on the front surface 8a of the positioning plate; a plurality of iron sheets 602 are fixedly arranged on the back surface 6b of the scale, the back surface 6b of the scale is arranged corresponding to the front surface 8a of the positioning plate, the iron sheets 602 and the magnetic sheet 801 are corresponding and are in adsorptive connection, when the central venous pressure is actually measured, whether the central venous pressures of a plurality of body positions are the same needs to be measured, when the body positions are different, the position of the right atrium of the patient is different, that is, the position of the scale 6 needs to be adjusted again, the scale 6 and the positioning plate 8 are in magnetic adsorptive connection, so that the position of the middle pipe section of the main pipe 2 or the scale 6 is conveniently adjusted. The width of the positioning plate 8 is greater than the width of the scale 6, the length of the positioning plate 8 is greater than the length of the scale 6, the width of the magnetic sheet 801 is greater than the width of the scale 6, and the length of the magnetic sheet 801 is greater than the length of the scale 6, so that the adsorption between the scale 6 and the positioning plate 8 is firm. The outer periphery of the main pipe 2 is further provided with two hard collars 201, the two hard collars 201 are arranged corresponding to the two ends of the scale mark layer 601, or the two hard collars 201 are arranged corresponding to the two ends of the scale 6, and the two hard collars 201 and the drip stand 7 are detachably connected through magic tapes 202, so that the two hard collars 201 and the drip stand 7 are conveniently detached and reconnected to adjust the position of the middle pipe section of the main pipe 2 or the scale 6.

[0039] As a preferred embodiment, the top of the drip stand 7 is provided with a hook 701 for hanging the saline bag 1. The other end of the water pipe section 3 is provided with a bottle plug piercer 302 for plugging the saline bag 1, and the first end 2a of the main pipe is threadedly connected with the central venous catheter.

[0040] The above only describes the preferred embodiments of the present application and is not used to limit the present application. For those skilled in the art, the present application can be variously changed and modified. Any modification, equivalent replacement, improvement, etc. within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A central venous pressure measuring device for use in connection with a central venous catheter and for measuring central venous pressure, characterized in that, The central venous pressure measuring device comprises: a saline bag; a main pipeline comprising oppositely arranged first and second ends, the first end of the main pipeline being detachably connected with the central venous catheter, a middle pipeline section of the main pipeline being provided with a scale mark layer, or an outer surface of the middle pipeline section of the main pipeline being fixed with a scale ruler, the scale ruler being provided with the scale mark layer, and a setting direction of the scale mark layer corresponding to an extension direction of the middle pipeline section of the main pipeline; a water delivery pipeline section, one end of the water delivery pipeline section being fixedly connected with the second end of the main pipeline and in communication, and the other end of the water delivery pipeline section being detachably connected with the saline bag; an air inlet pipeline section, one end of the air inlet pipeline section being fixedly connected with the second end of the main pipeline and in communication, and the air inlet pipeline section and the main pipeline extending in the same direction; an air outlet pipeline section, one end of the air outlet pipeline section being fixedly connected with the main pipeline and in communication, and the one end of the air outlet pipeline section being arranged close to the first end of the main pipeline.

2. The central venous pressure measuring device according to claim 1, wherein: the other end of the air inlet pipeline section is fixed with an air inlet device; the other end of the air outlet pipeline section is fixed with a drainage plug.

3. The central venous pressure measuring device according to claim 2, wherein: the water delivery pipeline section is provided with a first water stop clamp, the air inlet pipeline section is provided with a second water stop clamp, and the air outlet pipeline section is provided with a third water stop clamp.

4. The central venous pressure measuring device according to claim 3, wherein: the main pipeline is further provided with a flow regulator, and the flow regulator is arranged close to the first end of the main pipeline.

5. The central venous pressure measuring device according to claim 4, wherein: an outer surface of the middle pipeline section of the main pipeline is fixed on a front surface of the scale ruler, the front surface of the scale ruler is further provided with the scale mark layer, the scale mark layer is arranged close to an edge of the main pipeline, and a zero scale on the scale mark layer corresponds to the first end of the main pipeline.

6. The central venous pressure measuring device according to claim 5, wherein: the central venous pressure measuring device further comprises an infusion stand, a middle part of the infusion stand is further provided with a positioning plate, a back surface of the positioning plate is fixedly connected with the infusion stand, and a front surface of the positioning plate is fixed with a strip-shaped magnetic sheet; a back surface of the scale ruler is fixed with a plurality of iron sheets which are uniformly spaced, the back surface of the scale ruler corresponds to the front surface of the positioning plate, and the iron sheets and the magnetic sheet correspond to and are attractively connected with each other.

7. The central venous pressure measuring device according to claim 6, wherein: a width of the positioning plate is greater than a width of the scale ruler, and a length of the positioning plate is greater than a length of the scale ruler; a width of the magnetic sheet is greater than the width of the scale ruler, and a length of the magnetic sheet is greater than the length of the scale ruler.

8. The central venous pressure measuring device according to claim 7, wherein: The outer periphery of the main pipeline is also provided with two hard collars, and the two hard collars are arranged in one-to-one correspondence with the two ends of the scale mark layer, or the two hard collars are arranged in one-to-one correspondence with the two ends of the scale ruler, and the two hard collars and the infusion support are detachably connected through magic tape.

9. The central venous pressure measuring device according to claim 8, wherein: The top of the infusion support is provided with a hook for hanging the saline bag.

10. The central venous pressure measuring device according to claim 9, wherein: The other end of the water delivery pipe section is provided with a bottle plug piercer for plugging with the saline bag, and the first end of the main pipeline is threadedly connected with the central venous catheter.

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