Integrated CVP measuring device

Abstract

The integrated CVP measuring device comprises an injection mechanism, a scale measuring mechanism and an attaching mechanism, the injection mechanism is used for pushing normal saline and measuring the height of a liquid level water column, the scale measuring mechanism and an extension pipe are sleeved with liquid in a detection pipe, and the scale measuring mechanism is tightly attached to the bottom of the injection mechanism. The attaching mechanism is bound to the wrist portion of a patient and attached to the body surface skin of the patient, and the scale measuring mechanism comprises an extension tube, scale marks and a scale for CVP measurement. The zero point fixing adhesive sticker in contact with the zero point position of the body surface of the patient is mounted at the front end of the extension tube with the scales, so that movement of the zero point position of the body surface caused by human factors is prevented, data accuracy is prevented from being affected, and complexity of mutual connection among parts is omitted.

Description

Technical Field

[0001] The utility model relates to the technical field of chemical instruments, in particular to an integrated CVP measuring device. Background Art

[0002] Central venous pressure (CVP) refers to the pressure at the point where the superior and inferior vena cava enter the right atrium. It can reflect the comprehensive situation of blood volume, cardiac function, and vascular tension. Moreover, central venous pressure reflects the whole body blood volume and cardiac function status earlier than arterial pressure. Therefore, it is widely used in clinical critical and emergency diseases. By continuously monitoring central venous pressure, the right cardiac preload can be accurately understood. When the central venous pressure is abnormal, it indicates possible diseases such as shock, heart failure, and heart failure.

[0003] Central venous pressure (CVP) refers to the pressure of the superior and inferior vena cava entering the right atrium. It can be measured through a catheter in the superior and inferior vena cava or right atrium. It reflects the right atrial pressure and is one of the main indicators for clinical observation of hemodynamics.

[0004] Among them, the integrated CVP measuring infusion stand disclosed in the application number "CN202021429361.5" is an "integrated CVP measuring infusion stand, comprising an infusion stand, a sliding sleeve which can slide up and down is provided on the infusion stand, a fastening knob for fixing the sliding sleeve is provided on one side of the sliding sleeve, a vertically upward scale is fixed on the other side of the sliding sleeve, and a pipe groove is provided on the scale. The utility model provides an integrated CVP measuring infusion stand, a sliding sleeve is provided to facilitate adjustment of the zero point position, a pipe groove is provided on the scale to facilitate fixing the pressure measuring tube and observing the liquid level change, and a leveling rod can further assist in finding the zero point position.

[0005] Further search revealed: Application number: CN201920212127.8, a disposable integrated CVP measuring infusion set. The utility model discloses that the utility model relates to a disposable integrated CVP measuring infusion set with a simple structure and scientific and reasonable structure. The utility model includes an L-shaped pressure measuring tube, the vertical part of which is provided with a scale, one end of the pressure measuring tube is connected to the infusion part, and the other end is connected to the internal jugular vein catheter; the end of the infusion tube connected to the internal jugular vein catheter is provided with a switch clamp, which is arranged on the outside of the infusion tube to control the connection and disconnection of the infusion tube and the internal jugular vein catheter; the right angle of the infusion tube is provided with a drug puncture injection port sealed with a silicone plug, and the silicone plug can be punctured after disinfection to push the intravenous drug. When measuring CVP, turn off the infusion, separate the infusion part from the CVP measuring part, straighten the vertical part of the pressure measuring tube, let the patient lie flat, adjust the position of the pressure measuring tube, that is, the starting point of the scale of the pressure measuring tube is flush with the right atrium position of the fourth intercostal space on the right mid-axillary line of the patient, and read the value of the pressure measuring tube after it stabilizes. This value is the patient's CVP. However, this kind of integrated CVP measuring device still has the following defects in actual use:

[0006] 1) The water column method is currently commonly used in clinical practice. In the actual measurement process, the nurse needs to prepare several pairs of saline syringes, extension tubes, rulers or tape measures required for measurement. Two people work together to operate, one person zeroes and fixes the extension tube vertically, and the other person vents the syringe to the atmosphere and then measures the height of the water column when the water column level stops falling;

[0007] 2) This process is cumbersome and inconvenient, requiring the cooperation of multiple medical colleagues. One needs to hold up and straighten the pressure measuring extension tube, and the other needs to check it. This process naturally takes a lot of time, and during the measurement process, the extension tube must be kept in a vertical state, otherwise it will lead to inaccurate data. The whole process requires many and scattered items to be prepared, the operation is cumbersome and affected by many factors, and it also wastes human resources. Utility Model Content

[0008] The purpose of the utility model is to provide an integrated CVP measuring device to solve the problems raised by the above background technology.

[0009] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: an integrated CVP measuring device, comprising an injection mechanism, a scale measuring mechanism and a fitting mechanism;

[0010] The injection mechanism is used to push physiological saline solution, and the height of the liquid level water column is measured;

[0011] The scale measuring mechanism is connected to the outer sleeve of the extension tube to detect the liquid in the tube;

[0012] The scale measuring mechanism is closely attached to the bottom of the injection mechanism;

[0013] The fitting mechanism is used to bind the patient's wrist to fit the patient's skin;

[0014] The scale measuring mechanism comprises an extension tube, scale lines, and a ruler for measuring CVP.

[0015] As a preferred solution of the utility model: the extension tube is a PVC intravenous infusion tube, which is made of transparent material, and the outer wall of the tube body is engraved with a plurality of scale lines for reference, and the data size of the scale lines is in millimeters.

[0016] As a preferred solution of the utility model: the scale is closely attached to the side wall of the extension tube, and a plurality of scale markings measured in centimeters are arranged on the surface in sequence, and the edges of the scale markings match the scale lines.

[0017] As a preferred solution of the utility model: a level bead is provided in the middle of the ruler, and a detachable mechanism is provided on the top side of the ruler;

[0018] The detachable mechanism comprises a silicone sleeve which is clamped on the outer wall of the extension tube, and the sleeve end of the silicone sleeve is adjusted in tightness by tightening the buckle.

[0019] As a preferred solution of the utility model: a roller is hinged on the side of the silicone sleeve, and the edge of the roller is hinged to the side of the ruler, wherein the scale lines and scale marking lines are adapted for use, and the gap between the two is ten times the scale difference.

[0020] As a preferred solution of the utility model: the injection mechanism includes a syringe connecting tube seat connected to the top of the extension tube, a three-way pipe connected to the top of the syringe connecting tube seat, the side wall of the three-way pipe is connected to an exhaust valve port, and one end of the exhaust valve port is connected to a U-shaped exhaust pipe through an airtight regulating valve pipe.

[0021] As a preferred solution of the utility model: a syringe with volume scale markings is connected to the top end of the three-way pipe, a piston push rod is sealed at the injection tube head of the syringe, and the injection port of the syringe is sealed and connected to the three-way pipe.

[0022] As a preferred solution of the utility model: the fitting mechanism includes a body surface zero-point fixing adhesive sticker arranged in the middle of the bottom end of the extension tube, a binding gasket is provided in the middle of the body surface zero-point fixing adhesive sticker, a connecting strap buckle is horizontally installed in the middle of the binding gasket, one end of the connecting strap buckle is bound to the middle of the extension tube, and oil facial paper is fitted on the back of the connecting strap buckle.

[0023] As a preferred solution of the utility model: a laser detection seat is provided on the side of the binding gasket, a positioning laser head is horizontally installed in the middle of the laser detection seat, and the top end of the positioning laser head matches the surface position of the ruler.

[0024] As a preferred solution of the utility model: a measuring pipeline is externally connected to the bottom of the extension tube body.

[0025] Compared with the prior art, the beneficial effects of the utility model are:

[0026] 1) The extension tube with scale can read the data directly without manual measurement. The front end of the extension tube with scale is installed with a zero-point fixing adhesive sticker that contacts the zero point position of the patient's body surface to prevent the movement of the zero point position of the body surface caused by human factors, which affects the accuracy of the data and saves the tediousness of connecting various components to each other;

[0027] 2) The oily paper and the zero-point fixed adhesive sticker on the edge are used to determine the zero point position of the patient's central venous pressure test. The binding gasket and the connecting strap buckle are convenient to realize the binding position of the zero-point fixed adhesive sticker and the outer wall of the extension tube. The oily paper is torn off and the side with adhesive properties is attached to the patient's zero point body surface position, which improves the convenience of testing by one person;

[0028] 3) The purpose of the level bead and the specific scale markings is to coordinate the specific clamping position between the silicone sleeve and the extension tube. It is used as an accessory and can be directly disassembled when not in use. After injecting enough saline into the syringe to reach the zero position, loosen the airtight regulating valve to determine the central venous pressure value in a short time. In addition, the level bead is used to improve the horizontal placement of the scale and correct the data accuracy. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 It is a schematic diagram of the structure of the utility model;

[0030] Figure 2 It is a schematic diagram of the back structure of the utility model;

[0031] Figure 3 This is a schematic diagram of the bonding mechanism structure of the utility model;

[0032] Figure 4 This is a schematic diagram of the structure of the syringe of the utility model;

[0033] Figure 5 This is a schematic diagram of the three-way pipe structure of the utility model;

[0034] Figure 6 This is a schematic diagram of the structure of the scale measurement mechanism of the utility model;

[0035] Figure 7 It is a schematic diagram of the structure of a level bead of the utility model.

[0036] In the figure: 1, injection mechanism; 11, syringe connection pipe seat; 12, three-way pipe; 13, exhaust valve port; 14, U-shaped exhaust pipe; 141, airtight regulating valve; 15, syringe; 151, piston push rod;

[0037] 2. Scale measuring mechanism; 21. Extension tube; 22. Scale line; 23. Ruler; 24. Scale marking line; 25. Level bead;

[0038] 3. Laminating mechanism; 31. Zero point fixing adhesive sticker; 32. Binding gasket; 33. Connecting strap buckle; 341. Laser detection seat; 34. Oil paper; 341. Laser detection seat; 35. Position laser head; 36. Measuring pipeline;

[0039] 4. Removable mechanism; 41. Silicone sleeve; 42. Tightening buckle; 43. Roller. DETAILED DESCRIPTION

[0040] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0041] See also Figure 1 - Figure 7 , the utility model provides a technical solution: an integrated CVP measuring device, comprising an injection mechanism 1, a scale measuring mechanism 2 and a fitting mechanism 3;

[0042] The injection mechanism 1 is used to push the physiological saline solution, and the liquid level water column height is measured;

[0043] The scale measuring mechanism 2 and the outer cover of the extension tube 21 are connected to the liquid in the detection tube;

[0044] The scale measuring mechanism 2 is closely attached to the bottom of the injection mechanism 1;

[0045] The fitting mechanism 3 is bound to the patient's wrist and fits with the patient's skin surface;

[0046] The scale measuring mechanism 2 includes an extension tube 21, scale lines 22, and a scale 23 for measuring CVP.

[0047] In this embodiment, the extension tube 21 is a PVC intravenous infusion tube, which is made of transparent material. A plurality of scale lines 22 for reference are engraved on the outer wall of the tube, and the data size of the scale lines 22 is in millimeters.

[0048] The scale lines 22 are in millimeters, so that the CVP data obtained is more precise.

[0049] In this embodiment, the scale 23 is closely attached to the side wall of the extension tube 21 , and a plurality of scale marks 24 measured in centimeters are arranged on the surface in sequence, and the edges of the scale marks 24 match the scale marks 22 .

[0050] By matching the scale markings 24 and the scale markings 22, the scale markings 24 are counted in centimeters, and the range is large. The data obtained by combining the millimeter counting and the scale markings 24 can be smaller.

[0051] In this embodiment: a level bead 25 is provided in the middle of the ruler 23, wherein a detachable mechanism 4 is provided on the top side of the ruler 23;

[0052] The detachable mechanism 4 comprises a silicone sleeve 41 which is clamped on the outer wall of the extension tube 21 . The sleeve end of the silicone sleeve 41 is adjusted in tightness by tightening the buckle 42 .

[0053] The silicone sleeve 41 and the tightening buckle 42 are used to make the connection between the ruler 23 and the extension tube 21 more flexible. The tube body can be replaced later because it is a disposable device.

[0054] In this embodiment: a roller 43 is hinged on the side of the silicone sleeve 41, and the edge of the roller 43 is hinged to the side of the ruler 23, wherein the scale line 22 and the scale mark line 24 are adapted for use, and the gap between the two is ten times the scale difference.

[0055] The roller 43 and the scale 23 are deflected and stretched to make the section of the extension tube 21 in the zero scale body surface area straighter due to the stretched state of the scale 23.

[0056] In this embodiment: the injection mechanism 1 includes a syringe connecting tube seat 11 connected to the top of the extension tube 21, a three-way pipe 12 connected to the top of the syringe connecting tube seat 11, and a side wall of the three-way pipe 12 is connected to an exhaust valve port 13, and one end of the exhaust valve port 13 is connected to a U-shaped exhaust pipe 14 through an airtight regulating valve 141.

[0057] Through the cooperation between the extension tube 21 and the three-way tube 12, a short change of the injected saline after exhaust due to the change in air pressure is achieved. This short change is measured by the water column method.

[0058] In this embodiment, a syringe 15 with volume scale marks is connected to the top end of the three-way tube 12 , a piston push rod 151 is sealed at the injection tube head of the syringe 15 , and an injection port of the syringe 15 is sealed and connected to the three-way tube 12 .

[0059] The syringe 15 is used to suck the liquid, and the three-way pipe 12 can slowly exhaust the gas during the injection stage to change the internal and external air pressures.

[0060] In this embodiment: the fitting mechanism 3 includes a body surface zero-point fixed adhesive patch 31 arranged in the middle of the bottom end of the extension tube 21, a binding gasket 32 ​​is provided in the middle of the body surface zero-point fixed adhesive patch 31, a connecting strap buckle 33 is horizontally installed in the middle of the binding gasket 32, one end of the connecting strap buckle 33 is bound to the middle of the extension tube 21, and an oil facial paper 34 is fitted on the back of the connecting strap buckle 33.

[0061] The oily paper 34 and the fastened state of the connecting strap buckle 33 realize the binding with the outer wall of the extension tube 21.

[0062] In this embodiment: a laser detection seat 341 is provided on the side of the binding gasket 32 ​​, a positioning laser head 35 is laterally installed in the middle of the laser detection seat 341 , and the top end of the positioning laser head 35 matches the surface position of the ruler 23 .

[0063] The positioning laser head 35 used is actually a laser pen. The purpose of emitting laser is to determine whether the ruler 23 is straight. Assuming that the binding gasket 32 ​​is a plane, the laser and the ruler 23 need to be approximately at right angles to the binding gasket 32 ​​at the patient's fitting part. The light path of the laser radiation can solve this problem that is difficult to detect with the naked eye, and the laser head is also easy to disassemble.

[0064] In this embodiment, a measuring pipe 36 is externally connected to the bottom of the extension tube 21 .

[0065] Its purpose is to obtain the patient's CPV data by means of the tube-guided conversion means of the measuring pipe 36.

[0066] Step 1: Preliminary preparations;

[0067] After the tightening buckle 42 and the edge of the silicone sleeve 41 are stretched open, the elastic clamp is clamped on the surface of the extension tube 21, and the roller 43 is turned over, and the bottom of the ruler 23 is supported by the fitting mechanism 3;

[0068] Then ensure that the extension tube 21 of one end tube is vertically supported;

[0069] Step 2: Determine the zero fixed point on the patient's body surface;

[0070] At this time, the user adheres according to the bonding structure of the zero-point fixed adhesive sticker 31, and based on the corresponding oil-faced paper 34, the middle part of the extension tube 21 is bound with the extension tube 21 according to the buckling state of the middle connecting strap buckle 33, and the connecting strap buckles 33 on both sides are tightened and coordinated, and the extension tube 21 is further extended after vertical insertion by using the tube structure of the extension tube 21;

[0071] Until the extension tube 21 is connected, the user only needs to tighten the interval between them, and then manually connect the upper syringe 15 and the piston push rod 151 at the top. At this time, the syringe 15 is filled with enough physiological saline, and the prepared 20 ml of physiological saline is manually pushed into the three-way tube 12. Then, in order to ensure the smooth discharge of air in the tube during the pushing stage, the airtight regulating valve 141 is appropriately loosened to allow air to be generated at the regulating valve port, so that the liquid pushed into the extension tube 21 will occupy most of the space and the gas can be smoothly discharged from the U-shaped exhaust pipe 14 (similar to the vertical placement of the hanging needle operation);

[0072] At this moment, the physiological saline will gradually slide down and flow into the pipe part with the scale line 22;

[0073] Step 3: After the scale 23 is attached, the extension tube 21 is connected to achieve matching;

[0074] After the liquid is injected, manually rotate the tee to open the passage between the syringe 15 and the extension tube 21, exhaust the air, and then connect the measuring pipe 36;

[0075] After determining the zero point position on the patient's body surface, fix the dressing at the front end of the extension tube 21 there;

[0076] After the infusion set is ventilated to the atmosphere, when the water column level stops dropping, check the scale on the extension tube 21 at the end of the patient's exhalation, which is the CVP value;

[0077] In addition, the corresponding scale 23 and the adapted scale line 22 can be unified to complete the mutual matching of data and read information;

[0078] The light path illuminated by the laser head 35 is combined to check whether the ruler 23 is placed horizontally, and the reference level bead 25 is also consistent.

[0079] The contents not described in detail in this specification belong to the prior art known to professional and technical personnel in the field. Although the present invention has been described in detail with reference to the aforementioned embodiments, it is still possible for technical personnel in the field to modify the technical solutions described in the aforementioned embodiments, or to make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention shall be included in the protection scope of the present invention.

Claims

1. An integrated CVP measuring device, comprising an injection mechanism (1), a scale measuring mechanism (2) and a fitting mechanism (3); Features: The injection mechanism (1) is used to push physiological saline solution and measure the height of the liquid level water column; The scale measuring mechanism (2) and the extension tube (21) are connected to the outer surface of the detection tube for detecting the liquid in the tube; The scale measuring mechanism (2) is closely attached to the bottom of the injection mechanism (1); The fitting mechanism (3) is bound to the patient's wrist and fits with the patient's skin surface; The scale measuring mechanism (2) comprises an extension tube (21), scale lines (22), and a scale (23) for measuring CVP.

2. An integrated CVP measuring device according to claim 1, characterized in that: The extension tube (21) is a PVC intravenous infusion tube, which is made of transparent material. The outer wall of the tube is engraved with a plurality of scale lines (22) for reference, and the data size of the scale lines (22) is in millimeters.

3. The integrated CVP measuring device according to claim 1, characterized in that: The scale (23) is closely attached to the side wall of the extension tube (21), and a plurality of scale markings (24) measured in centimeters are arranged on the surface in sequence, and the edges of the scale markings (24) match the scale markings (22).

4. The integrated CVP measuring device according to claim 3, characterized in that: A level bead (25) is provided in the middle of the ruler (23), wherein a detachable mechanism (4) is provided on the top side of the ruler (23); The detachable mechanism (4) comprises a silicone sleeve (41) clamped on the outer wall of the extension tube (21), and the sleeve end of the silicone sleeve (41) is adjusted in tightness by tightening the buckle (42).

5. The integrated CVP measuring device according to claim 4, characterized in that: The side of the silicone sleeve (41) is hinged with a roller (43), and the edge of the roller (43) is hinged with the side of the ruler (23), wherein the scale line (22) and the scale mark line (24) are adapted for use, and the gap between the two is ten times the scale difference.

6. The integrated CVP measuring device according to claim 1, characterized in that: The injection mechanism (1) comprises a syringe connecting tube seat (11) connected to the top of the extension tube (21), a three-way tube (12) connected to the top of the syringe connecting tube seat (11), a pipe side wall of the three-way tube (12) connected to an exhaust valve port (13), and one end of the exhaust valve port (13) connected to a U-shaped exhaust pipe (14) via an airtight regulating valve (141).

7. The integrated CVP measuring device according to claim 6, characterized in that: The top end of the three-way tube (12) is connected to a syringe (15) with volume scale markings, the injection tube head of the syringe (15) is sealed with a piston push rod (151), and the injection port of the syringe (15) is sealed and connected to the three-way tube (12).

8. The integrated CVP measuring device according to claim 1, characterized in that: The bonding mechanism (3) comprises a body surface zero-point fixing adhesive sticker (31) arranged at the middle of the bottom end of the extension tube (21), a binding gasket (32) is arranged in the middle of the body surface zero-point fixing adhesive sticker (31), a connecting strap buckle (33) is transversely installed in the middle of the binding gasket (32), one end of the connecting strap buckle (33) is bound to the middle of the extension tube (21), and an oily facial paper (34) is bonded to the back of the connecting strap buckle (33).

9. The integrated CVP measuring device according to claim 8, characterized in that: A laser detection seat (341) is provided on the side of the binding gasket (32), and a positioning laser head (35) is installed laterally in the middle of the laser detection seat (341), and the top end of the positioning laser head (35) matches the surface position of the ruler (23).

10. The integrated CVP measuring device according to claim 8, characterized in that: The bottom of the extension tube (21) is externally connected to a measuring pipe (36).

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