A central venous pressure measuring device

Abstract

The utility model discloses a central venous pressure measuring device, including main support, main support upper portion and lower part are slidably connected with two telescopic frames of upper telescopic frame and lower telescopic frame, main support be equipped with center point, and two telescopic frames are symmetrically arranged with center point as center, main support with two telescopic frames between be equipped with when one of telescopic frame removes and push another telescopic frame reverse movement's linkage structure, main support be connected with measuring assembly, measuring assembly be equipped with the clamping structure for clamping infusion tube on, measuring assembly be equipped with the measuring scale for measuring the liquid level of infusion tube on, the zero point of measuring scale is located the position corresponding to center point, the utility model discloses the purpose is to overcome the deficiency of prior art, provide a kind of convenient operation, and the central venous pressure measuring device of more accurate measurement.

Description

Technical Field

[0001] This utility model specifically relates to a central venous pressure measuring device. Background Technology

[0002] Central venous pressure (CVP) refers to the pressure in the right atrium and the thoracic segments of the superior and inferior vena cava. Measuring CVP reflects a patient's overall blood volume, cardiac function, and vascular tone. CVP measurement has significant clinical value, with indications including, but not limited to, various types of severe shock, dehydration, blood loss, or hypovolemia requiring monitoring of blood volume changes. In cases of heart failure and acute pulmonary edema, it can be used to differentiate between heart failure and hypovolemia. Furthermore, CVP measurement is indispensable in cases requiring long-term intravenous fluid infusion or intravenous hyperalimentation.

[0003] Before performing CVP measurement, thorough preparation is necessary. This includes explaining the purpose, procedure, and precautions to the patient to gain their cooperation, and preparing necessary items such as a central venous access kit, pressure measuring device, sterile gloves, and disinfectants. During the procedure, first, a suitable puncture site is selected (usually the internal jugular vein, subclavian vein, or femoral vein). Then, disinfection, draping, and local anesthesia are performed. The Seldinger technique is used to insert the central venous catheter correctly into the superior or inferior vena cava. Next, the central venous catheter is connected to the pressure sensor or measuring tube, ensuring a tight, leak-free connection. The zero point of the pressure sensor or measuring tube is then adjusted to the level of the fourth intercostal space at the mid-axillary line, which corresponds to the level of the right atrium. Finally, the specific value of the central venous pressure is observed and recorded. Normally, the CVP value should be between 5 and 12 cmH2O. Values ​​below this range may indicate insufficient blood volume, while values ​​above this range may indicate abnormal cardiac function or other related problems.

[0004] However, traditional CVP measurement methods have certain limitations. For example, errors may occur when aligning the measurement reference point, affecting the accuracy of the measurement results. Furthermore, the operation procedures are relatively cumbersome, increasing the workload of medical staff. Therefore, developing a central venous pressure measurement device that simplifies the operation process and improves measurement accuracy is particularly important.

[0005] This utility model was developed precisely because of the aforementioned shortcomings. Utility Model Content

[0006] The purpose of this invention is to overcome the shortcomings of the existing technology and provide a central venous pressure measuring device that is easy to operate and provides more accurate measurements.

[0007] This utility model is achieved through the following technical solution:

[0008] This utility model provides a central venous pressure measuring device, including a main support. Two telescopic frames, an upper telescopic frame and a lower telescopic frame, are slidably connected to the upper and lower parts of the main support, respectively. The main support has a center point, and the two telescopic frames are symmetrically arranged around the center point. A linkage structure is provided between the main support and the two telescopic frames, which pushes the other telescopic frame to move in the opposite direction when one telescopic frame moves. A measuring component is connected to the main support. The measuring component has a clamping structure for holding the infusion tube and a measuring scale for measuring the fluid level in the infusion tube. The zero point of the measuring scale is located at the position corresponding to the center point.

[0009] As described above, in the central venous pressure measuring device, the upper end of the upper telescopic frame is connected to an upper positioning plate for resting against the front of the human body, and the lower end of the lower telescopic frame is connected to a lower positioning plate for resting against the back of the human body.

[0010] In the central venous pressure measuring device described above, the lower positioning plate is rotatably connected to the lower telescopic frame, allowing the lower positioning plate to fold towards the lower telescopic frame, and the upper positioning plate is rotatably connected to the upper telescopic frame, allowing the upper positioning plate to fold towards the upper telescopic frame.

[0011] In the central venous pressure measuring device described above, the clamping structure is a groove provided on the measuring component.

[0012] As described above, the central venous pressure measuring device consists of two rotatably connected measuring plates, allowing the measuring assembly to be folded. When the two measuring plates are unfolded and aligned, the slots on the two measuring plates form the groove.

[0013] As described above, the central venous pressure measuring device includes a linkage structure comprising a gear rotatably connected to the main support, a first rack connected to the upper telescopic frame, and a second rack connected to the lower telescopic frame. Both the first rack and the second rack mesh with the gear, and the first rack and the second rack are symmetrically located on both sides of the gear.

[0014] In the central venous pressure measuring device described above, the main support has side grooves on both sides for accommodating the first and second racks.

[0015] In the central venous pressure measuring device described above, the lower telescopic frame is fitted under the main support so that the lower telescopic frame can slide up and down, and the upper telescopic frame is fitted under the main support so that the upper telescopic frame can slide up and down.

[0016] As described above, the central venous pressure measuring device has sliding ribs on the inner sides of both the lower and upper telescopic frames that can be engaged with the side grooves.

[0017] As described above, the central venous pressure measuring device has a housing surrounding the central support.

[0018] Compared with the prior art, the present invention has the following advantages:

[0019] 1. Improve measurement accuracy: By setting a center point on the main support and ensuring that the two telescopic frames are symmetrically arranged around the center point, the zero point of the measurement scale can always be aligned with the midpoint of the back and chest of the human body when measuring central venous pressure. This design can significantly improve the accuracy of measurement data.

[0020] 2. Enhanced ease of operation: The device adopts an upper positioning plate and a lower positioning plate, which are used to fit the patient's chest and back respectively, simplifying the operation steps of aligning the position during measurement and improving the convenience and repeatability of use; Compact structure and easy storage: By designing the upper and lower positioning plates as foldable structures and the measurement component 4 as a foldable design, the entire device is more compact when not in use, making it easy to store and carry. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the central venous pressure measuring device of this utility model. Figure 1 ;

[0022] Figure 2 This is a schematic diagram of the central venous pressure measuring device of this utility model. Figure 2 ;

[0023] Figure 3 This is a schematic diagram of the central venous pressure measuring device of this utility model in use;

[0024] Figure 4 This is an exploded schematic diagram of the central venous pressure measuring device of this utility model. Detailed Implementation

[0025] The utility model will be further described below with reference to the accompanying drawings:

[0026] The orientations described in this utility model specification, such as "up," "down," "left," "right," "front," and "back," are based on the orientations in the accompanying drawings and are intended to facilitate the description of the relationships between the various components. They do not indicate the unique or absolute positional relationships between the various components, but are merely one embodiment of the utility model and are not a limitation on its implementation.

[0027] This embodiment describes a central venous pressure measuring device, such as... Figures 1 to 4As shown, this structure includes a main support 1. The upper and lower parts of the main support 1 are slidably connected to two telescopic frames: an upper telescopic frame 2 and a lower telescopic frame 3. The main support 1 has a center point P. In this embodiment, the center point P is located at the midpoint of the vertical direction of the main support 1. The two telescopic frames are symmetrically arranged around the center point P. A linkage structure 5 is provided between the main support 1 and the two telescopic frames, which pushes the other telescopic frame to move in the opposite direction when one telescopic frame moves. A measuring component 4 is connected to the main support 1. The measuring component 4 has a clamping structure 40 for clamping the infusion tube. The measuring component 4 has a measuring scale 41 for measuring the fluid level of the infusion tube. The zero point of the measuring scale 41 is located at the position corresponding to the center point P. In use, the central venous pressure measuring device is placed vertically on one side of the lying patient. By moving the two telescopic frames, the ends of the telescopic frames are aligned with the patient's back and chest, respectively. At this time, the center point P is located in the middle of the patient's back and chest. The infusion tubing is placed in the clamping structure 40, and the position of the fluid level in the infusion tubing can be observed with the naked eye. The position of the measuring scale 41 is measured accordingly as the reference data for central venous pressure. This device ensures that when measuring the fluid level in the infusion tubing, the zero point of the measuring scale 41 is always aligned with the midpoint of the patient's back and chest, improving the accuracy of the measurement.

[0028] Preferably, to ensure that the ends of the two telescopic frames are aligned with the patient's back and chest respectively, such as... Figure 1 and Figure 3 As shown, the upper telescopic frame 2 is connected to an upper positioning plate 6 for abutting against the chest of the human body, and the lower telescopic frame 3 is connected to a lower positioning plate 7 for abutting against the back of the human body.

[0029] As a priority, to save space and make the measuring device more compact, such as Figure 1 As shown, the lower positioning plate 7 is rotatably connected to the lower telescopic frame 3, allowing the lower positioning plate 7 to fold towards the lower telescopic frame 3. The upper positioning plate 6 is rotatably connected to the upper telescopic frame 2, allowing the upper positioning plate 6 to fold towards the upper telescopic frame 2. Preferably, the clamping structure 40 is a groove provided on the measuring component 4, which can be used to insert the infusion set tubing, allowing the infusion set tubing to be arranged straight along the vertical direction. The measuring scale 41 is distributed in the same direction as the length of the groove.

[0030] As a priority, to save space and make the measuring device more compact, such as Figure 2As shown, the measuring component 4 consists of two rotatably connected measuring plates 42, which allows the measuring component 4 to be folded. When the two measuring plates 42 are unfolded and aligned, the slots 401 set on the two measuring plates 42 form the groove. One end of one of the measuring plates 42 is connected to the center point P of the main support 1, so that the zero point of the measuring scale 41 is located at the position corresponding to the center point P.

[0031] As one implementation of the linkage structure 5, such as Figure 4 As shown, the linkage structure 5 includes a gear 51 rotatably connected to the main support 1, a first rack 21 connected to the upper telescopic frame 2, and a second rack 31 connected to the lower telescopic frame 3. The first rack 21 and the second rack 31 are both meshed with the gear 51, and the first rack 21 and the second rack 31 are symmetrically located on both sides of the gear 51. In this way, when one of the upper telescopic frame 2 or the lower telescopic frame 3 moves, the other moves in the opposite direction, thereby ensuring that the two are always symmetrically set with the center point P as the center, so that the center point P always corresponds to the zero point of the measuring scale 41.

[0032] To make the structure more stable, such as Figure 4 As shown, the main support 1 has side grooves 10 on both sides for accommodating the first rack 21 and the second rack 31.

[0033] To make the structure more stable, such as Figure 4 As shown, the lower telescopic frame 3 is sleeved on the lower part of the main support 1 so that the lower telescopic frame 3 can slide up and down, and the upper telescopic frame 2 is sleeved on the upper part of the main support 1 so that the upper telescopic frame 2 can slide up and down.

[0034] To make the structure more stable, such as Figure 4 As shown, both the lower telescopic frame 3 and the upper telescopic frame 2 are provided with sliding ribs A that can be inserted into the side groove 10.

[0035] To make the structure more robust and flat, such as Figure 4 As shown, the main support 1 has a housing 8 in the middle that surrounds it, and the measuring component 4 can be connected to the housing 8. Moreover, the shape of the housing 8 matches the cross-sectional shape of the upper telescopic frame 2 and the lower telescopic frame 3. When the upper telescopic frame 2 and the lower telescopic frame 3 approach each other, they and the housing 8 abut against each other to form a flat overall structure.

[0036] The above descriptions are merely embodiments of this utility model, and common knowledge regarding specific structures and characteristics is not elaborated upon here. It should be noted that those skilled in the art can make various modifications and improvements without departing from the structure of this utility model, and these should also be considered within the scope of protection of this utility model. These modifications will not affect the effectiveness of the implementation of this utility model or the practicality of the patent. The scope of protection claimed in this application shall be determined by the content of its claims, and the specific embodiments described in the specification can be used to interpret the content of the claims.

Claims

1. A central venous pressure measuring device, characterized by: The system includes a main support (1), with an upper telescopic frame (2) and a lower telescopic frame (3) slidably connected to the upper and lower parts of the main support (1), respectively. The main support (1) has a center point, and the two telescopic frames are symmetrically arranged with the center point as the center. A linkage structure (5) is provided between the main support (1) and the two telescopic frames, which pushes the other telescopic frame to move in the opposite direction when one of the telescopic frames moves. A measuring component (4) is connected to the main support (1), and the measuring component (4) has a clamping structure (40) for clamping the infusion tube. The measuring component (4) has a measuring scale (41) for measuring the liquid level of the infusion tube, and the zero point of the measuring scale (41) is located at the position corresponding to the center point.

2. The central venous pressure measuring device according to claim 1, characterized in that: The upper telescopic frame (2) is connected to an upper positioning plate (6) for abutting against the chest of the human body, and the lower telescopic frame (3) is connected to a lower positioning plate (7) for abutting against the back of the human body.

3. The central venous pressure measuring device according to claim 2, characterized in that: The lower positioning plate (7) is rotatably connected to the lower telescopic frame (3), so that the lower positioning plate (7) can be folded toward the lower telescopic frame (3). The upper positioning plate (6) is rotatably connected to the upper telescopic frame (2), so that the upper positioning plate (6) can be folded toward the upper telescopic frame (2).

4. The central venous pressure measuring device of claim 1, wherein: The clamping structure (40) is a groove provided on the measuring component (4).

5. The central venous pressure measuring device according to claim 4, characterized in that: The measuring component (4) consists of two rotatably connected measuring plates (42), which allows the measuring component (4) to be folded. When the two measuring plates (42) are unfolded and aligned, the slots (401) provided on the two measuring plates (42) form the groove.

6. The central venous pressure measuring device of claim 1, wherein: The linkage structure (5) includes a gear (51) rotatably connected to the main support (1), a first rack (21) connected to the upper telescopic frame (2), and a second rack (31) connected to the lower telescopic frame (3). The first rack (21) and the second rack (31) are both meshed with the gear (51), and the first rack (21) and the second rack (31) are symmetrically located on both sides of the gear (51).

7. The central venous pressure measuring device of claim 6, wherein: The main support (1) has side grooves (10) on both sides for accommodating the first rack (21) and the second rack (31).

8. The central venous pressure measuring device of claim 7, wherein: The lower telescopic frame (3) is fitted on the lower part of the main support (1) so that the lower telescopic frame (3) can slide up and down, and the upper telescopic frame (2) is fitted on the upper part of the main support (1) so that the upper telescopic frame (2) can slide up and down.

9. The central venous pressure measuring device of claim 8, wherein: The lower telescopic frame (3) and the upper telescopic frame (2) are both provided with sliding ribs (A) that can be inserted into the side groove (10).

10. The central venous pressure measuring device of claim 1, wherein: The main support (1) has a shell (8) in the middle that surrounds it.

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