Central venous pressure gauge

Abstract

The utility model belongs to the technical field of medical supplies, and discloses a central venous pressure manometer which comprises an infusion bottle support, a measuring leveling ruler, a connecting clamping block and a pressure measuring tube, the measuring leveling ruler is movably connected to a vertical rod of the infusion bottle support through the connecting clamping block, one side of the connecting clamping block is vertically connected with a supporting shaft, and the other side of the connecting clamping block is connected with a pressure measuring tube. A positioning rod is rotatably arranged on the outer side of the supporting shaft, two blocking pieces are arranged at the positions, in the right-angle relation, of the side face of the connecting clamping block and located in the horizontal direction and the vertical direction of one side of the supporting shaft respectively, and the two ends of the pressure measuring pipe are fixedly communicated with a three-way connector and an exhaust hole connector respectively. The pressure measuring tube can be conveniently matched with the infusion bottle support and the measuring leveling ruler for use, the height of the measuring leveling ruler can be conveniently adjusted, the position of a measured central positioning point can be accurately positioned, the measuring accuracy is improved, the central venous pressure can be independently measured, the using process is simplified, and the environmental applicability is improved.

Description

Technical Field

[0001] This utility model belongs to the field of medical supplies technology, specifically relating to a central venous pressure monitor. Background Technology

[0002] Central venous pressure (CVP) refers to the pressure generated when blood flows through the right atrium and superior and inferior vena cava. It is generally measured via internal jugular or femoral vein puncture. Clinically, it is used as a common and important indicator for assessing right ventricular function, effective circulating blood volume, and vascular tone. Currently, manual measurement is a relatively traditional method. First, a three-way stopcock is used to connect the catheter, infusion set, and manometer. Then, the patient is placed in a supine position, ensuring the zero point of the manometer is at the same level as the right atrium. The clamps of the infusion set and manometer are opened, allowing saline solution from the infusion set to enter the manometer. When the fluid reaches... After estimating the venous pressure, close the clamp on the infusion set, then open the clamp on the catheter and observe the drop in the manometer. When the fluid level drops to a certain point and stops decreasing, read the number on the manometer; this is the manually measured central venous pressure. The above-mentioned existing technology has the following shortcomings: the measurement process is complex, relying on the nurse's eyesight to locate the central venous pressure, which can easily lead to inaccurate positioning; the manometer itself does not have a scale indication, requiring manual operation of a measuring ruler for close comparison; the measurement results are greatly affected by human factors and are inaccurate.

[0003] Based on this, the present invention designs a central venous pressure manometer to solve the above problems. Utility Model Content

[0004] The purpose of this invention is to provide a central venous pressure monitor to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a central venous pressure gauge, comprising an IV drip support, a measuring ruler, a connecting block, and a pressure measuring tube. The measuring ruler is movably connected to the upright of the IV drip support via the connecting block. A support shaft is vertically connected to one side of the connecting block, and a positioning rod is rotatably attached to the outer side of the support shaft. Two baffles are provided at right angles on the side of the connecting block, with the two baffles located horizontally and vertically on one side of the support shaft, respectively. A tee connector and a vent connector are fixedly connected to both ends of the pressure measuring tube, respectively. A three-way ball valve is provided in the middle of the tee connector. A water-stop clamp is movably sleeved on the outer side of the pressure measuring tube near the tee connector. The outer surface of the pressure measuring tube has graduation lines matching the measuring ruler, and the surface of the measuring ruler has a groove that matches the outer diameter of the pressure measuring tube, with the groove located on one side of the graduation lines on the measuring ruler.

[0006] Preferably, the connecting block has a U-shaped slot on the side away from the support shaft that matches the upright of the bottle holder. A locking bolt is threaded through the side of the connecting block, and the end of the locking bolt is pressed against the surface of the upright of the bottle holder. A clamping groove is provided on the side of the connecting block away from the locking bolt, and an elastic clamping piece is connected to one side of the inside of the clamping groove.

[0007] Preferably, the elastic clip is configured as an arc-shaped strip, and the side of the elastic clip away from the clamping groove is bent to form a limiting block.

[0008] Preferably, the positioning rod adopts a telescopic rod structure in which multiple sections of stainless steel tubes slide and are connected to each other, and one end of the positioning rod is slidably connected to the support shaft.

[0009] Preferably, a fastening nut is screwed onto the outer end of the support shaft, and the fastening nut is pressed against the surface of the positioning rod.

[0010] Preferably, the pressure measuring tube is a medical silicone tube, and the length of the pressure measuring tube is greater than 30cm.

[0011] Preferably, a T-shaped handle is fixedly connected to the valve stem of the three-way ball valve, and the top surface of the T-shaped handle is provided with a passage arrow that matches the channel direction of the three-way connector. The vent connector adopts a one-way breather valve.

[0012] This utility model provides a central venous pressure monitor, which has the following beneficial effects:

[0013] (1) By using the connecting clip and positioning rod, the measuring rod can be vertically connected to the upright of the IV drip stand, which makes it convenient to adjust the height of the measuring rod according to the height of the bed or the patient's infusion site. When using it, rotate the positioning rod to make it horizontal, adjust the height of the connecting clip on the upright of the IV drip stand so that the positioning rod is at the same level as the right atrium of the patient lying flat, and then align the zero point of the measuring rod with the positioning rod. This can accurately locate the position of the central positioning point. By attaching the pressure measuring tube to the surface of the measuring rod and aligning the scale lines on both, it is convenient to measure the patient immediately and effectively improve the accuracy of central venous pressure measurement.

[0014] (2) By setting a scale line on the pressure measuring tube that matches the measuring ruler, it can be closely attached to the measuring ruler for comparison measurement, and the measurement results are more clearly and reliably observed. It can also be used independently for central venous pressure measurement, making the measurement convenient and timely, simplifying the usage process, and improving environmental applicability. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0016] Figure 2 This is a schematic diagram of the structure of the measuring straightedge of this utility model being attached to the connecting block;

[0017] Figure 3 This is a schematic diagram of the connecting block of this utility model;

[0018] Figure 4 This is a schematic diagram of the pressure measuring tube of this utility model when used independently.

[0019] In the diagram: 1. Drip bottle bracket; 2. Measuring straightedge; 21. Slot; 3. Connecting block; 31. Support shaft; 311. Fastening nut; 32. Baffle; 33. U-shaped slot; 34. Locking bolt; 35. Clamping groove; 36. Elastic clamp; 361. Limiting block; 4. Pressure measuring tube; 41. T-connector; 411. T-ball valve; 412. T-handle; 42. Vent port connector; 43. Water stop clamp; 5. Positioning rod. Detailed Implementation

[0020] The technical solutions 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. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0021] like Figures 1-4 As shown, this utility model provides a central venous pressure monitor, which includes an IV drip support 1, a measuring ruler 2, a connecting block 3, and a pressure measuring tube 4. The measuring ruler 2 is movably connected to the upright of the IV drip support 1 via the connecting block 3. A support shaft 31 is vertically connected to one side of the connecting block 3, and a positioning rod 5 is rotatably mounted on the outer side of the support shaft 31. Two baffles 32 are provided at right angles on the side of the connecting block 3, and the two baffles 32 are respectively located in the horizontal and vertical directions on one side of the support shaft 31, which can limit the rotation angle of the positioning rod 5 to a range of 90 degrees between the horizontal and vertical directions. The two ends of the pressure measuring tube 4 are respectively fixedly connected to a T-junction. The head 41 and the vent connector 42 are equipped with a three-way ball valve 411 in the middle of the three-way connector 41. A water-stop clamp 43 is movably sleeved on the outer side of the end of the pressure measuring tube 4 near the three-way connector 41. The three-way connector 41 facilitates the connection of the pressure measuring tube 4 with the infusion tube of the central venous catheter and infusion set. The outer surface of the pressure measuring tube 4 is provided with scale lines that match the measuring ruler 2. The surface of the measuring ruler 2 is provided with a groove 21 that matches the outer diameter of the pressure measuring tube 4. The groove 21 is located on one side of the scale line of the measuring ruler 2, which facilitates the clamping and assembly of the pressure measuring tube 4 onto the surface of the measuring ruler 2, so that the scale lines on both are aligned and facilitating the measurement of central venous pressure.

[0022] It should be noted that: such as Figure 4As shown, a T-shaped handle 412 is fixedly connected to the valve stem of the three-way ball valve 411. The top surface of the T-shaped handle 412 is provided with a passage arrow that matches the channel direction of the three-way connector 41. The vent connector 42 adopts a one-way breather valve. By rotating the T-shaped handle 412, the opening and closing status of each pipeline of the three-way connector 41 can be easily adjusted. The operation is simple. Through the one-way breather valve, air can be smoothly discharged when liquid is injected into the pressure measuring tube 4, preventing backflow.

[0023] In a preferred embodiment, such as Figure 2 and Figure 3 As shown, the connecting block 3 has a U-shaped slot 33 on the side away from the support shaft 31 that matches the upright of the bottle holder 1. A locking bolt 34 is threaded through the side of the connecting block 3, and the end of the locking bolt 34 is pressed against the surface of the upright of the bottle holder 1. A clamping groove 35 is provided on the side of the connecting block 3 away from the locking bolt 34, and an elastic clamping piece 36 is connected to the inside of the clamping groove 35.

[0024] Furthermore, the elastic clip 36 is configured as an arc-shaped strip, and the side of the elastic clip 36 away from the clamping groove 35 is bent to form a limiting block 361.

[0025] In the above embodiment, the U-shaped slot 33 on one side of the connecting block 3 can be movably engaged with the upright of the IV drip support 1, and then the locking bolt 34 can be tightened for fixation. This facilitates adjustment of the height of the connecting block 3 on the upright of the IV drip support 1. Through the compression of the elastic clip 36 and the restriction of the limiting block 361, the measuring ruler 2 can be firmly engaged in the clamping groove 35, making the measuring ruler 2 vertically placed. At the same time, it is convenient for the measuring ruler 2 to move rubbed within the clamping groove 35 in the vertical direction, thereby facilitating the adjustment of the height and position of the measuring ruler 2 according to the height of the hospital bed or the patient's infusion site.

[0026] In a preferred embodiment, such as Figure 1 and Figure 2 As shown, the positioning rod 5 adopts a telescopic rod structure with multiple sections of stainless steel tubes slidingly connected to each other. One end of the positioning rod 5 is slidably connected to the support shaft 31. A fastening nut 311 is screwed onto the outer side of the end of the support shaft 31, and the fastening nut 311 is pressed against the surface of the positioning rod 5. The telescopic rod structure allows for adjustment of the length of the positioning rod 5 for easy storage. By tightening the fastening nut 311, the positioning rod 5 can be pressed against the connecting block 3 for fixation, ensuring the stability of the positioning rod 5 after its position is determined.

[0027] In a preferred embodiment, such as Figure 1 and Figure 4As shown, the pressure measuring tube 4 is made of medical silicone tubing and is longer than 30cm to ensure that the saline solution in the infusion set can enter the pressure measuring tube 4 in sufficient quantity, making it convenient to observe the fluid position and monitor the patient's central venous pressure.

[0028] Working principle: In actual use, the connecting block 3 is engaged with the upright of the IV drip stand 1 through the U-shaped slot 33 on one side. The measuring ruler 2 is fixed to the connecting block 3 through the clamping groove 35 and the elastic clip 36. The positioning rod 5 is in a vertical position. When measuring central venous pressure, one end of the pressure measuring tube 4 is connected to the central venous catheter and the infusion tube of the infusion set through the three-way connector 41. Then, the patient is kept in a supine position. The positioning rod 5 is rotated to make it horizontal. The height of the connecting block 3 is then adjusted so that the positioning rod 5 is aligned with the patient's right atrium. The measuring ruler 2 is then moved so that its zero point is on the horizontal plane of the positioning rod 5. The pressure measuring tube 4 is engaged with the surface of the measuring ruler 2 so that the scale lines on both are aligned, ensuring that the zero point of the pressure measuring tube 4 is at the same level as the right atrium. Then, the clamps on the infusion set and the stop clamps 43 on the pressure measuring tube 4 are opened. The three-way connector 41 is rotated to make the patient lie flat. The patient is then ... The three-way ball valve 411 on the connector 41 allows the saline solution in the infusion set to enter the pressure measuring tube 4. Once the fluid level reaches above the estimated venous pressure, the clamp of the infusion set is closed. Then, the three-way ball valve 411 is rotated to connect the pressure measuring tube 4 to the central venous catheter. The clamp on the central venous catheter is opened, and the fluid level in the pressure measuring tube 4 is observed to drop. When the fluid level drops to a certain point and stops dropping, the number on the scale line of the pressure measuring tube 4 or the measuring ruler 2 can be read, which is the manually measured central venous pressure. In this embodiment, the pressure measuring tube 4 can also be used independently for central venous pressure measurement. The nursing staff can use experience and eyesight to align the zero point of the pressure measuring tube 4 with the patient's right atrium, keep the pressure measuring tube 4 vertical, and then measure using the above measurement method. This allows for independent central venous pressure measurement, making the measurement immediate and relatively accurate, simplifying the usage process, and improving environmental applicability.

[0029] Finally, it should be noted that the above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A central venous pressure manometer, comprising a hanging bottle support (1), a measuring ruler (2), a connecting block (3) and a manometer tube (4), the measuring ruler (2) is movably connected to the vertical rod of the hanging bottle support (1) through the connecting block (3), characterized in that: The side of the connecting block (3) is vertically connected with a supporting shaft (31), the outer side of the supporting shaft (31) is rotatably connected with a positioning rod (5), the side surface of the connecting block (3) is provided with two stop flaps (32) in a right angle relationship, the two stop flaps (32) are located in the horizontal direction and the vertical direction of the side of the supporting shaft (31) respectively, the two ends of the pressure measuring pipe (4) are fixedly connected with a three-way joint (41) and an exhaust hole joint (42) respectively, the inner middle of the three-way joint (41) is provided with a three-way ball valve (411), the outer side of the one end of the pressure measuring pipe (4) close to the three-way joint (41) is movably sleeved with a water stop clamp (43), the outer surface of the pressure measuring pipe (4) is provided with a scale line matched with the measuring ruler (2), and the surface of the measuring ruler (2) is provided with a clamping groove (21) matched with the outer diameter of the pressure measuring pipe (4), and the clamping groove (21) is located on the side of the scale line of the measuring ruler (2).

2. The central venous pressure manometer of claim 1, wherein: The side of the connecting block (3) is vertically connected with a supporting shaft (31), the outer side of the supporting shaft (31) is rotatably connected with a positioning rod (5), the side surface of the connecting block (3) is provided with two stop flaps (32) in a right angle relationship, the two stop flaps (32) are located in the horizontal direction and the vertical direction of the side of the supporting shaft (31) respectively, the two ends of the pressure measuring pipe (4) are fixedly connected with a three-way joint (41) and an exhaust hole joint (42) respectively, the inner middle of the three-way joint (41) is provided with a three-way ball valve (411), the outer side of the one end of the pressure measuring pipe (4) close to the three-way joint (41) is movably sleeved with a water stop clamp (43), the outer surface of the pressure measuring pipe (4) is provided with a scale line matched with the measuring ruler (2), and the surface of the measuring ruler (2) is provided with a clamping groove (21) matched with the outer diameter of the pressure measuring pipe (4), and the clamping groove (21) is located on the side of the scale line of the measuring ruler (2).

3. The central venous pressure manometer of claim 2, wherein: The side of the connecting block (3) is vertically connected with a supporting shaft (31), the outer side of the supporting shaft (31) is rotatably connected with a positioning rod (5), the side surface of the connecting block (3) is provided with two stop flaps (32) in a right angle relationship, the two stop flaps (32) are located in the horizontal direction and the vertical direction of the side of the supporting shaft (31) respectively, the two ends of the pressure measuring pipe (4) are fixedly connected with a three-way joint (41) and an exhaust hole joint (42) respectively, the inner middle of the three-way joint (41) is provided with a three-way ball valve (411), the outer side of the one end of the pressure measuring pipe (4) close to the three-way joint (41) is movably sleeved with a water stop clamp (43), the outer surface of the pressure measuring pipe (4) is provided with a scale line matched with the measuring ruler (2), and the surface of the measuring ruler (2) is provided with a clamping groove (21) matched with the outer diameter of the pressure measuring pipe (4), and the clamping groove (21) is located on the side of the scale line of the measuring ruler (2).

4. The central venous pressure manometer of claim 1, wherein: The side of the connecting block (3) is vertically connected with a supporting shaft (31), the outer side of the supporting shaft (31) is rotatably connected with a positioning rod (5), the side surface of the connecting block (3) is provided with two stop flaps (32) in a right angle relationship, the two stop flaps (32) are located in the horizontal direction and the vertical direction of the side of the supporting shaft (31) respectively, the two ends of the pressure measuring pipe (4) are fixedly connected with a three-way joint (41) and an exhaust hole joint (42) respectively, the inner middle of the three-way joint (41) is provided with a three-way ball valve (411), the outer side of the one end of the pressure measuring pipe (4) close to the three-way joint (41) is movably sleeved with a water stop clamp (43), the outer surface of the pressure measuring pipe (4) is provided with a scale line matched with the measuring ruler (2), and the surface of the measuring ruler (2) is provided with a clamping groove (21) matched with the outer diameter of the pressure measuring pipe (4), and the clamping groove (21) is located on the side of the scale line of the measuring ruler (2).

5. The central venous pressure manometer of claim 4, wherein: ​ 6. The central venous pressure manometer of claim 1, wherein: ​ 7. The central venous pressure manometer of claim 1, wherein: ​

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