CN209884129U - Central vein pressure measuring ruler - Google Patents

Abstract

The utility model provides a central vein pressure measuring ruler belongs to medical instrument technical field. A central vein pressure measuring ruler comprises a fixed rod and a pressure measuring scale with scales, wherein the pressure measuring scale is sleeved on the side surface of the fixed rod in a vertically sliding manner, and a fixing component for relatively fixing the pressure measuring scale and the fixed rod is arranged between the pressure measuring scale and the fixed rod; the side of pressure measurement scale is provided with the connecting rod, the one end and the pressure measurement scale of connecting rod are connected, and the other end of connecting rod is provided with the chi frame perpendicularly, sliding connection has the armpit central line scale of taking the scale about in the chi frame, be provided with the annular knurl screw of fixing armpit central line scale on the chi frame, one side that the chi frame is close to the connecting rod is equipped with the standard mark, the standard mark with zero scale mark on the pressure measurement scale is located same straight line. The central venous pressure measuring ruler has the advantages of simple structure and convenience in use, and can accurately and conveniently zero the central venous pressure.

Description

A central venous pressure gauge

【Technical field】

The utility model relates to the technical field of medical devices, in particular to a central venous pressure gauge.

【Background technique】

Central Venous Pressure (CVP) is the pressure in the proximal large veins, such as the pressure in the right atrium and the thoracic segments of the superior and inferior vena cava. CVP can judge the comprehensive condition of patient's blood volume, cardiac function and vascular tone. In clinical practice, CVP measurement is commonly used to monitor the state of peripheral circulation and cardiac pump function. By continuously observing the changes of CVP value, it has important guiding significance for dealing with shock and other situations. CVP determination is commonly used in: 1. Acute heart failure; 2. Infusion of large amounts of fluid or cardiac patients; 3. Critically ill patients or cardiopulmonary bypass surgery. The normal value of central venous pressure is 6-12cmH2O, and the decrease or increase of central venous pressure has important clinical significance.

The central venous pressure gauge is a CVP measurement tool. During the CVP measurement, after the pressure measuring tube used to connect the patient's venous catheter is installed on the central venous pressure gauge, the zero-point positioning of the central venous pressure gauge needs to be performed. A specific part (such as the fourth intercostal space of the midaxillary line) is used as the reference point, so that the zero point of the central venous pressure gauge and the reference point are at the same level, thereby improving the accuracy of CVP measurement. Existing central venous pressure gauges are often visually inspected, which affects the accuracy of CVP measurement results, thereby affecting the judgment of the patient's condition and normal treatment. In addition, the existing central venous pressure gauge is inconvenient to fix during use. After the hospital staff has adjusted the zero scale, the central venous pressure gauge is often tied to the infusion rod with tape, which is very inconvenient when the patient needs to adjust the position to zero again.

【Content of utility model】

In order to solve the above problems, the purpose of the present invention is to provide a central venous pressure gauge, which has the advantages of simple structure, low cost, convenient use, and can accurately and conveniently perform zero adjustment of central venous pressure.

In order to achieve the above object, the technical scheme adopted by the present utility model is:

A central venous pressure gauge, comprising a fixed rod and a scaled pressure measuring scale, the pressure measuring scale can be slid up and down and sleeved on the side of the fixed rod, and a pressure measuring scale and the fixed rod are provided between the pressure measuring scale and the fixed rod to connect the two relative to each other. A fixed fixing assembly; the side of the pressure measuring scale is provided with a connecting rod, one end of the connecting rod is connected with the pressure measuring scale, and the other end of the connecting rod is vertically provided with a ruler frame, and the inside of the ruler frame is slidably connected with a belt The mid-axillary line ruler of the scale, the ruler frame is provided with knurled screws for fixing the mid-axillary line ruler, the side of the ruler frame close to the connecting rod is provided with a standard line, and the standard line is connected to the pressure measuring ruler. The zero tick marks are on the same line.

Preferably, one end of the connecting rod is fixedly connected to the side surface of the pressure measuring scale, and the connecting rod and the pressure measuring scale are perpendicular to each other.

More preferably, one end of the connecting rod is connected with the front face of the pressure measuring scale through a rotating shaft, and a limit plate is arranged on the side of the pressure measuring scale, the limit plate is perpendicular to the pressure measuring scale, and the limit plate can connect the pressure measuring scale. The rod is constrained to be perpendicular to the pressure gauge.

Preferably, the length of the fixing rod is greater than that of the pressure measuring scale, and the top end of the fixing rod is provided with a hook.

Preferably, the upper part and the lower part of the fixing rod are respectively provided with a fixing device, the fixing device comprises a fixing seat fixedly connected with the fixing rod, one side of the fixing seat is provided with a horizontal support rod, and the support rod is connected with Two opposite clamping arms, the clamping arms are provided with communicating holes, and a threaded column is connected between the communicating holes, one end of the threaded column is a limit head, and the threaded column is located between the two communicating holes. The other end of the column is provided with a threaded adjustment bolt; the opposite surfaces of the two clamping arms are arc-shaped surfaces, so that the clamping arms are encircled.

Preferably, a sleeve is provided on the back of the pressure measuring scale, and the pressure measuring scale is sleeved on the side of the fixing rod through the sleeve. The inner wall of the positioning through hole is provided with an internal thread matching with the positioning bolt, and one end of the positioning bolt passes through the positioning hole and abuts the fixing rod.

Preferably, the length of the connecting rod is 50-80 cm, and the range of the mid-axillary line scale is 0-40 cm.

Owing to adopting the above-mentioned technical scheme, the utility model has the following beneficial effects:

1. The utility model is provided with a connecting rod on the side of the pressure measuring scale, the other end of the connecting rod is provided with a mid-axillary line scale, and the height of the patient's mid-axillary line is tested by the mid-axillary line scale, and the scale corresponding to the height value read by the mid-axillary line scale and the standard line. Align, twist the knurled screw to lock the mid-axillary line ruler, and then tighten the positioning bolt of the fixing assembly when the lower end of the mid-axillary line ruler is placed on the bed near the patient's body. The scale corresponds to the zero point of the central venous pressure, that is, the zero adjustment is completed, so that the zero point positioning is accurate.

2. The utility model slides the pressure measuring scale on the fixed rod, and the fixed rod is provided with a hook and a fixer. The utility model can be hung in the hanging ring on the ceiling or fixed on the infusion rod, which is convenient for the utility model. The new type of fixation improves the work efficiency of the fixed central venous pressure gauge.

【Description of drawings】

FIG. 1 is a plan view of the central venous pressure gauge provided by Embodiment 1 of the present invention.

FIG. 2 is a top plan view of the central venous pressure gauge provided in Embodiment 1 of the present invention.

FIG. 3 is an enlarged view of the position A in Embodiment 1 of the present invention.

4 is a plan view of the fixture in Embodiment 1 of the present invention.

FIG. 5 is a plan view of the central venous pressure gauge provided by Embodiment 2 of the present invention.

6 is a top view of the central venous pressure gauge provided by Embodiment 2 of the present utility model

Among them, 1-hook, 2-fixer, 21-fixed seat, 22-support rod, 23-adjustment bolt, 24-threaded post, 25-clamp arm, 26-limit head, 27-spring, 3-fixed rod , 4-pressure measuring ruler, 41-sleeve, 5-connecting rod, 6-standard line, 7-axillary midline ruler, 8-foot frame, 9-rotating shaft, 10-limiting plate, 11-fixed component, 12- Knurled screws.

【Detailed ways】

The technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the implementations. example. The accompanying drawings are for illustrative purposes only, and represent only schematic diagrams, not physical drawings, and should not be construed as limitations on this patent. In order to better illustrate the specific embodiments of the present invention, some parts of the accompanying drawings may be omitted or enlarged. or reduction, does not represent the size of the actual product. For those skilled in the art, it is understandable that some well-known structures, components and their descriptions in the drawings may be omitted. Based on the embodiments of the present invention, those skilled in the art may All other embodiments obtained without creative work fall within the protection scope of the present invention.

In the description of the present invention, it should also be noted that, unless otherwise expressly specified and limited, the terms "arrangement" and "connection" should be understood in a broad sense, for example, it may be a fixed connection or a detachable connection, or It can be connected in one piece; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be internal communication between two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific situations.

Example 1

As shown in Figure 1, a central venous pressure gauge includes a fixed rod 3 and a scaled pressure measuring scale 4. The pressure measuring scale 4 can be slid up and down on the side of the fixed rod 3. The pressure measuring scale 4 and the fixed A fixing assembly 11 is arranged between the rods 3 to relatively fix the two; FIG. 2 shows one of the possible ways. The back of the pressure measuring scale 4 is provided with a sleeve 41, and the pressure measuring scale 4 passes through the sleeve 41. Sleeved on the side of the fixing rod 3, the fixing assembly 11 includes a positioning through hole and a positioning bolt that are opened on the lower front of the pressure measuring scale 4, the inner wall of the positioning through hole is provided with an internal thread matching the positioning bolt, and one end of the positioning bolt is pierced. It abuts against the fixing rod 3 through the positioning hole.

Continue to refer to Figure 1-4, the side of the pressure measuring scale 4 is provided with a connecting rod 5, one end of the connecting rod 5 is connected with the pressure measuring scale 4, and the position of the connection is as close as possible to the zero scale line of the pressure measuring scale 4, so that the connecting rod 5 The central axis and the zero scale line are on the same horizontal line, and the other end of the connecting rod 5 is vertically provided with a ruler frame 8, and the ruler frame 8 is slidably connected with a mid-axillary line ruler 7 with a scale, and the ruler frame 8 is provided with There are knurled screws 12 that fix the mid-axillary line ruler 7, and the side of the ruler frame 8 close to the connecting rod 5 is provided with a standard line 6, and the standard line 6 is located on the same zero scale line on the pressure measuring scale 4. in a straight line. According to the needs of practical applications, the length of the connecting rod 5 is 50-80 cm, and the range of the mid-axillary line ruler 7 is 0-40 cm. In the present invention, the pressure measuring scale 4, the connecting rod 5, and the ruler frame 8 are preferably made of stainless steel, and the standard line 6 is preferably a concave scribe line, so as to avoid wear.

In this embodiment, the length of the fixing rod 3 is greater than the pressure measuring scale, and the top of the fixing rod 3 is provided with a hook 1, so that when there is an infusion rod hanging ring on the roof, the fixing rod 3 is hung on the roof through the hook 1, which is convenient for central vein measurement. Fixing of the pressure gauge.

In this embodiment, the upper and lower parts of the fixing rod 3 are respectively provided with a fixing device 2 . The structure of the fixing device 2 is shown in FIGS. 1 and 4 , including a fixing base 21 fixedly connected with the fixing rod 3 . One side is provided with a horizontal support rod 22, the support rod 22 is connected with two opposite clamping arms 25, the clamping arms 25 are all provided with communication holes, and a threaded column 24 is connected between the communication holes, and one end of the threaded column 24 is The limit head 26, the threaded post 24 is sleeved with a spring 27 at the position between the two communication holes, and the other end of the threaded post 24 is provided with a threaded adjustment bolt; the opposite surfaces of the two clamping arms 25 are arc-shaped so that the clamping arms 25 are encircled. When in use, the clamping arm is opened by adjusting the adjusting bolt 23, then the clamping arm is clamped on the infusion rod, and the adjusting bolt 23 is clamped, so that the central venous pressure gauge of the present utility model can be fixed on the infusion rod, which is convenient to use. .

When the utility model is in use, the central venous pressure gauge is hung on the roof through a hook or fixed on the infusion rod through a fixer, the lower end of the mid-axillary line ruler 7 is placed on the hospital bed close to the patient's body, and the fourth Intercostal reference point, read the height value of the patient's midaxillary line, align the scale corresponding to the height value read by the midaxillary line ruler 7 with the standard line, twist the knurled screw 12 to lock the midaxillary line ruler 7, and then fix it. Loosen the positioning bolts of the assembly 11 slightly, so that the pressure measuring scale 4 can slide up and down. When the lower end of the mid-axillary line scale 7 is placed on the bed near the patient's body, tighten the positioning bolts of the fixing assembly 11. At this time, the pressure measuring The zero scale on the ruler corresponds to the zero point of the central venous pressure, that is, the zero adjustment is completed, so that the zero point positioning is accurate.

Example 2

Please refer to FIG. 5 and FIG. 6 . The difference from Embodiment 1 is that the connection method between the connecting rod 5 and the pressure measuring scale 4 is different, that is, one end of the connecting rod 5 and the front face of the pressure measuring scale 4 are rotated through the rotating shaft 9 Connection, the side of the pressure measuring scale 4 is provided with a limit plate 10 , the limit plate 10 is perpendicular to the pressure measuring scale 4 , and the limit plate 10 can limit the connecting rod 5 to a position perpendicular to the pressure measuring scale 4 . Through this arrangement, when in use, the connecting rod 5 and the pressure measuring scale are perpendicular to each other and are in an open state. When not in use, the connecting rod 5 can be rotated to overlap with the pressure measuring scale 4, which is convenient for storage and placement of the present invention.

The above description is a detailed description of the preferred feasible embodiments of the present utility model, but the embodiments are not intended to limit the scope of the patent application of the present utility model. All should belong to the scope of the patent covered by this utility model.

Claims (7)

1. A central venous pressure gauge is characterized in that: comprising a fixed rod (3) and a pressure measuring scale (4) with a scale, and the pressure measuring scale (4) can be slidably sleeved on the fixed rod (3). ), the pressure measuring scale (4) and the fixing rod (3) are provided with a fixing assembly (11) for relatively fixing the two; the side of the pressure measuring scale (4) is provided with a connecting rod (5), One end of the connecting rod (5) is connected with the pressure measuring scale (4), the other end of the connecting rod (5) is vertically provided with a ruler frame (8), and the ruler frame (8) is slidably connected up and down with a scale. Axillary midline ruler (7), the ruler frame (8) is provided with knurled screws (12) for fixing the midaxillary line ruler (7), and the ruler frame (8) is provided with a side close to the connecting rod (5). There is a standard line (6), the standard line (6) and the zero scale line on the pressure measuring scale (4) are located on the same straight line. 2. The central venous pressure gauge according to claim 1, characterized in that: one end of the connecting rod (5) is fixedly connected to the side of the pressure measuring scale (4), and the connecting rod (5) is connected to the pressure measuring scale (4) are perpendicular to each other. 3. The central venous pressure gauge according to claim 1, characterized in that: one end of the connecting rod (5) is connected with the front of the pressure measuring scale (4) through a rotating shaft (9), and the pressure measuring scale (4) is rotatably connected. A limit plate (10) is arranged on the side of the 4) Vertical position. 4. The central venous pressure gauge according to claim 1, characterized in that: the length of the fixing rod (3) is greater than that of the pressure measuring scale, and the top of the fixing rod (3) is provided with a hook (1). 5. The central venous pressure gauge according to claim 4, characterized in that: the upper part and the lower part of the fixing rod (3) are respectively provided with a fixer (2), and the fixer (2) comprises a (3) A fixed base (21) is fixedly connected, a horizontal support rod (22) is provided on one side of the fixed base (21), and two opposite clamping arms (25) are connected to the support rod (22), The clamping arms (25) are provided with communicating holes, and a threaded column (24) is connected between the communicating holes. One end of the threaded column (24) is a limit head (26), and the threaded column (24) is located between the two communicating holes. A spring (27) is sleeved at the part of the threaded rod (24), and a threaded adjusting bolt (23) is provided at the other end of the threaded column (24); (25) in an embracing shape. 6. The central venous pressure gauge according to claim 1, characterized in that: the back of the pressure measuring scale (4) is provided with a sleeve (41), and the pressure measuring scale (4) is covered by the sleeve (41) Set on the side of the fixing rod (3), the fixing assembly (11) includes a positioning through hole and a positioning bolt that are opened on the lower front of the pressure measuring scale (4), and the inner wall of the positioning through hole is provided with an inner wall that matches the positioning bolt. thread, and one end of the positioning bolt passes through the positioning hole and abuts the fixing rod (3). 7 . The central venous pressure gauge according to claim 1 , wherein the length of the connecting rod ( 5 ) is 50-80 cm, and the range of the mid-axillary line ruler ( 7 ) is 0-40 cm. 8 .

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