Equipment capable of monitoring central venous pressure in real time and use method

Abstract

The invention is suitable for the technical field of medical instruments, and provides equipment capable of monitoring central venous pressure in real time and a using method. The central venous pressure equipment comprises a central venous catheter connector and a central venous catheter connector, wherein one end of the central venous catheter connector is communicated with a central venous catheter; an infusion tube; and the number of the fixing assemblies is three. According to the invention, the pressure sensor is manually operated to drive the rectangular frame to enter the central venous pressure sensor connector, and when the surface of the pressure sensor is in contact with the inner surface of the central venous pressure sensor connector, the first spring drives the conical block to enter the first through hole formed in the rectangular frame; according to the utility model, rapid installation and automatic self-locking processing are carried out on the pressure sensor and the central venous pressure sensor connector, and the phenomenon that the equipment falls off due to external acting force in the use process is prevented, so that the installation portability and firmness of the product in the actual use process are improved.

Description

Technical Field

[0001] The present invention belongs to the technical field of medical devices, and in particular relates to a device capable of monitoring central venous pressure in real time and a method of using the device. Background Art

[0002] Central venous pressure is the pressure at the point where the superior and inferior vena cava enter the right atrium. It is measured through a catheter inserted into the superior and inferior vena cava or right atrium. It is one of the main indicators for clinical observation of hemodynamics. However, the current clinical measurement of central venous pressure mainly uses the catheter method based on the principle of a communicating vessel. This method is relatively complex to measure, has the risk of air embolism, and cannot monitor the patient's central venous pressure in real time.

[0003] For example, a central venous pressure measuring device disclosed in Chinese patent document (CN201046117Y) mainly solves the shortcomings of the existing central venous pressure measuring method, namely, the device is cumbersome to install, the operation is complicated, and the entire device cannot be moved at any time with the change of the patient's body position. The utility model includes a three-way connector with a switch, a measuring tube and an infusion tube marked with scale lines, wherein the two ports in the three-way connector are respectively connected to the measuring tube and the infusion tube. The utility model has the advantages of simple structure and convenient installation. However, during the use of the device, since the infusion tube is a disposable item, it needs to be replaced. The operation during the replacement and fixation of the infusion tube and the measuring tube is cumbersome, and the sealing is poor, which affects the central venous pressure measurement accuracy of the device.

[0004] In addition, in the existing central venous pressure monitoring equipment, due to the large number of pipes and their cross-entanglement, the infusion tube is often bent by external force, resulting in measurement obstruction. Therefore, it is necessary to use third-party equipment or third-party staff to assist in the operation. As a result, the overall amount of equipment carried is larger, the use is cumbersome and the detection is not accurate enough. Summary of the invention

[0005] The purpose of the embodiments of the present invention is to provide a device and a method of using the device that can monitor central venous pressure in real time, aiming to solve the problem of quickly disassembling and installing a measuring tube and an infusion tube while ensuring the sealing of the connection between the pipelines.

[0006] The embodiment of the present invention is implemented as follows: a device capable of monitoring central venous pressure in real time, the central venous pressure device comprising:

[0007] A central venous catheter connector, one end of which is connected to a central venous catheter;

[0008] An infusion tube, one end of which is connected to the central venous catheter connector, and the infusion tube is arranged on a side away from the central venous catheter;

[0009] The other end of the infusion tube is connected to an infusion device connector, a measuring tube is arranged on one side of the infusion tube, the measuring tube is arranged as a hose, one end of the measuring tube is connected to a central venous catheter connector, the other end of the measuring tube is connected to a central venous pressure sensor connector, the other side of the central venous pressure sensor connector is connected to a pressure sensor, and the pressure sensor is electrically connected to an external display and an alarm through a wire;

[0010] A fixing component, wherein three fixing components are provided, and the three fixing components are respectively arranged inside the central venous catheter connector, the infusion device connector and the central venous pressure sensor connector;

[0011] The anti-bending component is arranged above the measuring tube. The anti-bending component opens the valve in response to the venous pressure test start-up program, squeezes and injects liquid on the outside of the measuring tube and injects infusion liquid into the measuring tube, thereby assisting the measuring tube in resisting bending.

[0012] As a further limitation of the technical solution of the embodiment of the present invention, the bottom of the central venous catheter connector, the infusion device connector and the central venous pressure sensor connector is set to an arc shape, and the fixing assembly includes:

[0013] A first cavity, wherein two first cavities are provided, and the two first cavities are symmetrically arranged inside the central venous catheter connector, the infusion device connector and the central venous pressure sensor connector respectively;

[0014] A first spring, one side of which is fixedly connected to the inner wall of the central venous catheter connector, the infusion device connector and the central venous pressure sensor connector, and the other side of which is fixedly connected to a sliding plate, which is slidably connected to the inside of the first cavity;

[0015] A conical block, one side of which is fixedly connected to the sliding plate, and the conical block is arranged on a side away from the first spring;

[0016] A rectangular frame, one side of which is fixedly connected to the pressure sensor and the central venous catheter, and the rectangular frame is slidably connected to the inside of the first cavity, a first through hole is opened inside the rectangular frame, and the first through hole is clamped with the tapered block.

[0017] A connecting block, the bottom of which is fixedly connected to the top of the sliding plate.

[0018] A first cone block, wherein the bottom of the first cone block is fixedly connected to the top of the connecting block, a second cone block is arranged on the top of the first cone block, a fixing block is fixedly connected at the center of the top of the second cone block, and a pressing plate is fixedly connected to the top of the fixing block;

[0019] The second spring is provided with two second springs, which are symmetrically arranged on both sides of the fixed block, and the two sides of the second spring are respectively fixedly connected to the inner wall of the pressing plate, the central venous catheter connector, the infusion device connector and the central venous pressure sensor connector.

[0020] As a further limitation of the technical solution of the embodiment of the present invention, a sealing component is provided on one side of the fixing component, and multiple sealing components are respectively arranged inside the central venous catheter connector, the infusion device connector and the central venous pressure sensor connector, and the sealing component includes:

[0021] a second cavity, the second cavity being disposed inside the central venous catheter connector, the infusion set connector, and the central venous pressure sensor connector;

[0022] A third spring, one side of the third spring is fixedly connected to the inner wall of the central venous catheter connector, the infusion device connector and the central venous pressure sensor connector, and the other side of the third spring is fixedly connected to a sliding block, and the sliding block is slidably connected inside the second cavity;

[0023] A connecting rod, one end of which is fixedly connected to the sliding block, and the other end of which is fixedly connected to an annular sealing layer, which is arranged on the inner circumference of the pressure sensor and the central venous catheter, and the annular sealing layer and the connecting rod are both slidably sealed inside the second cavity;

[0024] A first airbag, the first airbag is arranged inside the second cavity, and two sides of the first airbag are respectively fixedly connected to the inner wall of the sliding block, the central venous catheter connector, the infusion device connector and the central venous pressure sensor connector, and one side of the first airbag is connected to the air delivery tube;

[0025] The second airbag, one side of the second airbag is connected to the air supply pipe, the second airbag is arranged inside the first cavity, and the two sides of the second airbag are respectively fixedly connected to the sliding plate, the central venous catheter connector, the infusion device connector and the inner wall of the central venous pressure sensor connector.

[0026] As a further limitation of the technical solution of the embodiment of the present invention, a valve body is provided on the infusion tube and the measuring tube, a valve core is rotatably connected inside the valve body, a valve stem is fixedly connected to the top of the valve core, and the top of the valve stem extends to the outside of the valve body and is fixedly connected to a rotating handle.

[0027] As a further limitation of the technical solution of the embodiment of the present invention, the anti-bending component is provided with one, and the anti-bending component is located at the top of the valve body on the measuring tube, and the anti-bending component includes:

[0028] A fixed box, the bottom of which is fixedly connected to the top of the valve body, and the fixed box is rotatably connected to the outer peripheral side of the valve stem through a bearing;

[0029] A double-headed convex block, wherein the double-headed convex block is fixedly connected to the outer peripheral side of the valve stem and the double-headed convex block is arranged inside the fixed box;

[0030] Arc plates, two of which are provided, and the two arc plates are symmetrically arranged on the outer peripheral side of the double-headed protrusion;

[0031] A liquid sac, one side of which is fixedly connected to the arc plate, and the other side of which is fixedly connected to the inner wall of the fixed box.

[0032] One side of the liquid bag is connected to an infusion tube, and the other end of the infusion tube is connected to an annular frame. The inner circumference of the annular frame is fixedly connected to the outer wall of the measuring tube. An annular cavity is opened inside the annular frame, and the outer circumference of the annular cavity is connected to multiple water outlets, which are located inside the annular frame. An outer sleeve is provided on the outer circumference of the annular frame, and both ends of the outer sleeve are respectively fixedly connected to the outer walls of the valve body, the central venous catheter connector and the infusion device connector.

[0033] The anti-bending component also includes:

[0034] The fourth spring is provided with two fourth springs, and the two fourth springs are symmetrically arranged on the outer peripheral side of the liquid bag, and the two sides of the fourth spring are respectively fixedly connected to the arc plate and the inner wall of the fixed box.

[0035] A method for using a device capable of real-time monitoring of central venous pressure comprises the following steps:

[0036] S1. Manually operate the pressure sensor to drive the rectangular frame into the central venous pressure sensor connector. At this time, the rectangular frame will first squeeze the tapered block, the sliding plate and the first spring. When the surface of the pressure sensor contacts the inner surface of the central venous pressure sensor connector, the first spring will drive the sliding plate and the tapered block to move toward the rectangular frame, so that the tapered block enters the first through hole opened in the rectangular frame, thereby quickly installing and self-locking the pressure sensor and the central venous pressure sensor connector.

[0037] S2, while the sliding plate drives the conical block to move toward the rectangular frame, it squeezes the second airbag, and transmits the gas inside the second airbag to the first airbag through the air pipe, so that it expands and drives the sliding block, the connecting rod and the annular sealing layer to move, and the connection between the pressure sensor and the central venous pressure sensor connector is sealed through the annular sealing layer;

[0038] S3, then connect the fixed and sealed infusion tube, measuring tube, pressure sensor and central venous catheter connector to the patient's built-in central venous catheter. The central venous catheter and the central venous catheter connector can be quickly installed and self-locked fixed according to the above principle;

[0039] S4. After the infusion tube is connected to the central venous catheter connector and the central venous catheter, the other end of the infusion tube is connected to the external infusion set through the infusion set connector. At this time, the valve body on the infusion tube is in an open state, and the valve body on the measuring tube is in a closed state;

[0040] S5. When the patient's central venous pressure needs to be monitored, the valve body on the measuring tube is in an open state, and the valve body on the infusion tube is in a closed state. At this time, the physiological saline in the external infusion set will fill the measuring tube, and then the external infusion set is closed, so that the pressure sensor can monitor and evaluate the patient's central venous pressure in real time;

[0041] S6. When the valve body on the measuring tube needs to be opened, the handle is manually operated to drive the valve stem and the valve core to rotate. At this time, the valve stem drives the double-headed protrusion to rotate, and the double-headed protrusion squeezes the arc plate, the liquid capsule and the fourth spring during the rotation process, and the liquid in the liquid capsule is transported to the inside of the annular frame through the infusion tube, and then transported to the outer sleeve and the inside of the measuring tube through multiple water outlets, so as to increase the bending resistance of the measuring tube during use;

[0042] S7. After use, the medical staff manually presses the two pressing plates at the same time, so that the fixing block and the second cone block move downward. During the downward movement, the second cone block uses its inclined surface to cause the first cone block to drive the connecting block and the sliding plate to squeeze the first spring, so that the sliding plate drives the cone block to move away from the first through hole, thereby releasing the self-locking fixing effect of the cone block on the rectangular frame, and the central venous catheter connector and the central venous catheter can be disassembled and replaced.

[0043] Beneficial effects:

[0044] 1. Compared with the prior art, the device and method for using central venous pressure monitoring in real time provided by the embodiment of the present invention manually operate the pressure sensor to drive the rectangular frame to enter the interior of the central venous pressure sensor connector. When the surface of the pressure sensor contacts the inner surface of the central venous pressure sensor connector, the first spring drives the sliding plate and the tapered block to move in the direction of the rectangular frame, so that the tapered block enters the first through hole opened in the rectangular frame, which is convenient for self-locking and fixing the rectangular frame, and then the pressure sensor and the central venous pressure sensor connector are quickly installed and automatically self-locked, so as to prevent the device from being damaged by external forces during use. The device is easy to install and can be used to remove the conical block and the second conical block by manually pressing the two pressing plates at the same time, so that the fixed block and the second conical block can be moved downward, and the first conical block can drive the connecting block, the sliding plate and the conical block to move away from the first through hole, so that the central venous catheter connector and the central venous catheter can be disassembled. The self-locking state between the conical block and the rectangular frame can be released by pressing the pressing plates at the same time, which reduces the influence of external factors on the connection state between the central venous catheter connector and the central venous catheter.

[0045] 2. Compared with the prior art, the embodiment of the present invention provides a device for real-time monitoring of central venous pressure and a method of use. When the sliding plate drives the conical block to move toward the rectangular frame, the gas inside the second airbag is transported to the first airbag, causing it to expand and drive the sliding block, the connecting rod and the annular sealing layer to move. The annular sealing layer is used to seal the connection between the pressure sensor and the central venous pressure sensor connector to prevent external air pressure from entering the interior from the connection, thereby preventing the real-time monitoring accuracy of the central venous pressure of the device from being affected.

[0046] 3. Compared with the prior art, the device and method for using central venous pressure in real time provided by the embodiment of the present invention do not require the assistance of third-party equipment or third-party staff for auxiliary operation, thereby reducing the number of overall equipment carried, making it convenient to use and ensuring accurate detection. When the valve body on the measuring tube needs to be opened, the handle is manually operated to drive the valve stem and the valve core to rotate. At this time, the valve stem will drive the double-headed protrusion to rotate, and the double-headed protrusion will transport the liquid inside the liquid bag through the infusion tube, the annular frame and multiple water outlets to the outer sleeve and the measuring tube during the rotation process, so as to increase the internal pressure of the pipeline, thereby increasing the overall rigidity and stability of the pipeline, thereby improving the bending resistance of the measuring tube, preventing the measuring tube from bending due to patient movement during the central venous pressure monitoring process, and thereby preventing the real-time monitoring accuracy of the device from being affected.

[0047] 4. Compared with the prior art, the real-time monitoring central venous pressure device and the use method provided by the embodiments of the present invention, under the combined action of the fixing component, the sealing component and the sealing component, enable medical staff to quickly replace and install the measuring tube, the infusion tube and the pressure sensor, thereby improving the portability of the device during use, and realizing automatic self-locking between the pipelines during the installation process, reducing the impact of external factors on the pipeline connections, and helping to improve the applicability of the device. At the same time, during the installation process, the sealing of the pipeline connections is effectively guaranteed to prevent external factors from affecting the monitoring accuracy of the equipment, and helping to improve the bending resistance of the measuring tube during real-time monitoring, further improving the applicability of the equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0048] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings in the following description are only some embodiments of the present invention.

[0049] Figure 1 It is a schematic diagram of the three-dimensional structure of a device that can monitor central venous pressure in real time.

[0050] Figure 2 A device that can monitor central venous pressure in real time Figure 1 Schematic diagram of the local enlarged structure at A.

[0051] Figure 3 The present invention is a schematic diagram of the internal top view structure of a central venous pressure sensor connector in a device capable of real-time monitoring of central venous pressure.

[0052] Figure 4 A device that can monitor central venous pressure in real time Figure 3 Schematic diagram of the local enlarged structure at point B.

[0053] Figure 5 It is a schematic diagram of a partial three-dimensional structure of a fixed component in a device that can monitor central venous pressure in real time.

[0054] Figure 6 The present invention is a schematic diagram of the internal structure of a valve body and a fixed box in a device capable of real-time monitoring of central venous pressure.

[0055] Figure 7 A device that can monitor central venous pressure in real time Figure 6 Schematic diagram of the local enlarged structure at C.

[0056] Figure 8 It is a schematic diagram of the three-dimensional structure of a double-headed protrusion in a device that can monitor central venous pressure in real time.

[0057] In the attached drawings: 1, central venous catheter connector; 2, central venous catheter; 3, infusion tube; 4, measuring tube; 5, infusion device connector; 6, central venous pressure sensor connector; 7, fixing assembly; 701, first cavity; 702, first spring; 703, sliding plate; 704, tapered block; 705, rectangular frame; 706, first through hole; 707, connecting block; 708, first tapered block; 709, second tapered block; 710, fixing block; 711, pressing plate; 712, second spring; 8, sealing assembly Parts; 801, second cavity; 802, third spring; 803, sliding block; 804, connecting rod; 805, annular sealing layer; 806, first air bag; 807, air pipe; 808, second air bag; 9, anti-bending component; 901, fixed box; 902, arc plate; 903, liquid bag; 904, fourth spring; 905, infusion pipe; 906, annular frame; 907, outer sleeve; 908, double-headed bump; 10, pressure sensor; 11, valve body; 12, valve stem; 13, handle. DETAILED DESCRIPTION

[0058] In order to make the purpose, technical solution and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0059] The purpose of the embodiments of the present invention is to provide a device and a method of using the device that can monitor central venous pressure in real time, aiming to solve the problem of quickly disassembling and installing a measuring tube and an infusion tube while ensuring the sealing of the connection between the pipelines.

[0060] The specific implementation of the present invention is described in detail below in conjunction with specific embodiments.

[0061] Example 1

[0062] Figure 1 It is a schematic diagram of the three-dimensional structure of a device that can monitor central venous pressure in real time.

[0063] Figure 6 The present invention is a schematic diagram of the internal structure of a valve body and a fixed box in a device capable of real-time monitoring of central venous pressure.

[0064] Specifically, Figure 1 As shown, in an embodiment of the present invention, a device capable of real-time monitoring of central venous pressure includes a central venous catheter connector 1, one end of the central venous catheter connector 1 is connected to a central venous catheter 2;

[0065] An infusion tube 3, one end of which is connected to the central venous catheter connector 1, and the infusion tube 3 is arranged on a side away from the central venous catheter 2;

[0066] The other end of the infusion tube 3 is connected to an infusion device connector 5, a measuring tube 4 is arranged on one side of the infusion tube 3, the measuring tube 4 is arranged as a hose, one end of the measuring tube 4 is connected to the central venous catheter connector 1, the other end of the measuring tube 4 is connected to a central venous pressure sensor connector 6, the other side of the central venous pressure sensor connector 6 is connected to a pressure sensor 10, and the pressure sensor 10 is electrically connected to an external display and an alarm through a wire;

[0067] A fixing component 7, wherein three fixing components 7 are provided, and the three fixing components 7 are respectively arranged inside the central venous catheter connector 1, the infusion device connector 5 and the central venous pressure sensor connector 6;

[0068] The anti-bending component 9 is arranged above the measuring tube 4. The anti-bending component opens the valve in response to the venous pressure test start-up program, squeezes and injects liquid on the outside of the measuring tube and injects infusion liquid into the measuring tube, thereby assisting the measuring tube in resisting bending.

[0069] Figure 3 The present invention is a schematic diagram of the internal top view structure of a central venous pressure sensor connector in a device capable of real-time monitoring of central venous pressure.

[0070] Figure 4 A device that can monitor central venous pressure in real time Figure 3 Schematic diagram of the local enlarged structure at point B.

[0071] Figure 5 It is a schematic diagram of a partial three-dimensional structure of a fixed component in a device that can monitor central venous pressure in real time.

[0072] See also Figure 1 , Figure 3-Figure 6 In the embodiment of the present invention, the bottoms of the central venous catheter connector 1, the infusion device connector 5 and the central venous pressure sensor connector 6 are arranged in an arc shape, and the fixing assembly 7 includes:

[0073] A first cavity 701, wherein two first cavities 701 are provided, and the two first cavities 701 are symmetrically arranged inside the central venous catheter connector 1, the infusion device connector 5 and the central venous pressure sensor connector 6 respectively;

[0074] A first spring 702, one side of which is fixedly connected to the inner wall of the central venous catheter connector 1, the infusion device connector 5 and the central venous pressure sensor connector 6, and the other side of which is fixedly connected to a sliding plate 703, and the sliding plate 703 is slidably connected to the inside of the first cavity 701;

[0075] A conical block 704, one side of which is fixedly connected to the sliding plate 703, and the conical block 704 is arranged on a side away from the first spring 702;

[0076] A rectangular frame 705 , one side of which is fixedly connected to the pressure sensor 10 and the central venous catheter 2 , and the rectangular frame 705 is slidably connected to the inside of the first cavity 701 , a first through hole 706 is opened inside the rectangular frame 705 , and the first through hole 706 is snap-fitted to the conical block 704 .

[0077] The connecting block 707 has a bottom that is fixedly connected to the top of the sliding plate 703 .

[0078] A first cone block 708, wherein the bottom of the first cone block 708 is fixedly connected to the top of the connecting block 707, a second cone block 709 is disposed on the top of the first cone block 708, a fixing block 710 is fixedly connected at the center of the top of the second cone block 709, and a pressing plate 711 is fixedly connected to the top of the fixing block 710;

[0079] The second spring 712, two second springs 712 are provided, and the two second springs 712 are symmetrically arranged on both sides of the fixed block 710, and the two sides of the second spring 712 are respectively fixedly connected to the inner walls of the pressing plate 711, the central venous catheter connector 1, the infusion device connector 5 and the central venous pressure sensor connector 6.

[0080] Example 2

[0081] Figure 1 It is a schematic diagram of the three-dimensional structure of a device that can monitor central venous pressure in real time.

[0082] Figure 6 The present invention is a schematic diagram of the internal structure of a valve body and a fixed box in a device capable of real-time monitoring of central venous pressure.

[0083] Specifically, Figure 1 As shown, in an embodiment of the present invention, a device capable of real-time monitoring of central venous pressure includes a central venous catheter connector 1, one end of the central venous catheter connector 1 is connected to a central venous catheter 2;

[0084] An infusion tube 3, one end of which is connected to the central venous catheter connector 1, and the infusion tube 3 is arranged on a side away from the central venous catheter 2;

[0085] The other end of the infusion tube 3 is connected to an infusion device connector 5, a measuring tube 4 is arranged on one side of the infusion tube 3, the measuring tube 4 is arranged as a hose, one end of the measuring tube 4 is connected to the central venous catheter connector 1, the other end of the measuring tube 4 is connected to a central venous pressure sensor connector 6, the other side of the central venous pressure sensor connector 6 is connected to a pressure sensor 10, and the pressure sensor 10 is electrically connected to an external display and an alarm through a wire;

[0086] A fixing component 7, wherein three fixing components 7 are provided, and the three fixing components 7 are respectively arranged inside the central venous catheter connector 1, the infusion device connector 5 and the central venous pressure sensor connector 6;

[0087] The anti-bending component 9 is arranged above the measuring tube 4 .

[0088] Figure 2 A device that can monitor central venous pressure in real time Figure 1 Schematic diagram of the local enlarged structure at A.

[0089] Figure 3 The present invention is a schematic diagram of the internal top view structure of a central venous pressure sensor connector in a device capable of real-time monitoring of central venous pressure.

[0090] Figure 4 A device that can monitor central venous pressure in real time Figure 3 Schematic diagram of the local enlarged structure at point B.

[0091] See also Figure 1-Figure 4 and Figure 6 In the embodiment of the present invention, a sealing component 8 is provided on one side of the fixing component 7, and a plurality of sealing components 8 are respectively arranged inside the central venous catheter connector 1, the infusion device connector 5 and the central venous pressure sensor connector 6, and the sealing component 8 includes:

[0092] A second cavity 801, which is disposed inside the central venous catheter connector 1, the infusion device connector 5 and the central venous pressure sensor connector 6;

[0093] A third spring 802, one side of the third spring 802 is fixedly connected to the inner wall of the central venous catheter connector 1, the infusion device connector 5 and the central venous pressure sensor connector 6, and the other side of the third spring 802 is fixedly connected to a sliding block 803, and the sliding block 803 is slidably connected to the inside of the second cavity 801;

[0094] A connecting rod 804, one end of which is fixedly connected to the sliding block 803, and the other end of which is fixedly connected to an annular sealing layer 805, which is arranged on the inner circumference of the pressure sensor 10 and the central venous catheter 2, and the annular sealing layer 805 and the connecting rod 804 are both slidably sealed inside the second cavity 801;

[0095] The first airbag 806 is disposed inside the second cavity 801, and both sides of the first airbag 806 are respectively fixedly connected to the inner walls of the sliding block 803, the central venous catheter connector 1, the infusion device connector 5 and the central venous pressure sensor connector 6, and one side of the first airbag 806 is connected to the air delivery tube 807;

[0096] The second airbag 808, one side of the second airbag 808 is connected to the air supply tube 807, the second airbag 808 is arranged inside the first cavity 701, and the two sides of the second airbag 808 are respectively fixedly connected to the inner walls of the sliding plate 703, the central venous catheter connector 1, the infusion device connector 5 and the central venous pressure sensor connector 6.

[0097] Example 3

[0098] Figure 1 It is a schematic diagram of the three-dimensional structure of a device that can monitor central venous pressure in real time.

[0099] Figure 6 The present invention is a schematic diagram of the internal structure of a valve body and a fixed box in a device capable of real-time monitoring of central venous pressure.

[0100] Specifically, Figure 1 As shown, in an embodiment of the present invention, a device capable of real-time monitoring of central venous pressure includes a central venous catheter connector 1, one end of the central venous catheter connector 1 is connected to a central venous catheter 2;

[0101] An infusion tube 3, one end of which is connected to the central venous catheter connector 1, and the infusion tube 3 is arranged on a side away from the central venous catheter 2;

[0102] The other end of the infusion tube 3 is connected to an infusion device connector 5, a measuring tube 4 is arranged on one side of the infusion tube 3, the measuring tube 4 is arranged as a hose, one end of the measuring tube 4 is connected to the central venous catheter connector 1, the other end of the measuring tube 4 is connected to a central venous pressure sensor connector 6, the other side of the central venous pressure sensor connector 6 is connected to a pressure sensor 10, and the pressure sensor 10 is electrically connected to an external display and an alarm through a wire;

[0103] A fixing component 7, wherein three fixing components 7 are provided, and the three fixing components 7 are respectively arranged inside the central venous catheter connector 1, the infusion device connector 5 and the central venous pressure sensor connector 6;

[0104] The anti-bending component 9 is arranged above the measuring tube 4 .

[0105] Figure 7 A device that can monitor central venous pressure in real time Figure 6 Schematic diagram of the local enlarged structure at C. Figure 8 It is a schematic diagram of the three-dimensional structure of a double-headed protrusion in a device that can monitor central venous pressure in real time.

[0106] See also Figure 1 , Figure 6 and Figure 8In the embodiment of the present invention, a valve body 11 is provided on the infusion tube 3 and the measuring tube 4, a valve core is rotatably connected inside the valve body 11, a valve stem 12 is fixedly connected to the top of the valve core, and the top of the valve stem 12 extends to the outside of the valve body 11 and is fixedly connected to a rotating handle 13.

[0107] As a further limitation of the technical solution of the embodiment of the present invention, the anti-bending component 9 is provided with one, and the anti-bending component 9 is located on the top of the valve body 11 on the measuring tube, and the anti-bending component 9 includes:

[0108] A fixed box 901, wherein the bottom of the fixed box 901 is fixedly connected to the top of the valve body 11, and the fixed box 901 is rotatably connected to the outer peripheral side of the valve stem 12 through a bearing;

[0109] A double-headed protrusion 908, wherein the double-headed protrusion 908 is fixedly connected to the outer peripheral side of the valve stem 12, and the double-headed protrusion 908 is arranged inside the fixed box 901;

[0110] The arc-shaped plate 902 is provided with two arc-shaped plates 902, and the two arc-shaped plates 902 are symmetrically arranged on the outer peripheral side of the double-headed protrusion 908;

[0111] The liquid capsule 903 has one side fixedly connected to the arc plate 902 , and the other side fixedly connected to the inner wall of the fixed box 901 .

[0112] One side of the liquid bag 903 is connected to an infusion tube 905, and the other end of the infusion tube 905 is connected to an annular frame 906. The inner circumference of the annular frame 906 is fixedly connected to the outer wall of the measuring tube 4. An annular cavity is opened inside the annular frame 906, and the outer circumference of the annular cavity is connected to multiple water outlets, which are located inside the annular frame 906. An outer sleeve 907 is provided on the outer circumference of the annular frame 906, and both ends of the outer sleeve 907 are fixedly connected to the outer walls of the valve body 11, the central venous catheter connector 1 and the infusion device connector 5 respectively.

[0113] The anti-bending component 9 also includes:

[0114] The fourth spring 904 is provided with two fourth springs 904 , and the two fourth springs 904 are symmetrically arranged on the outer peripheral side of the liquid capsule 903 , and the two sides of the fourth spring 904 are fixedly connected to the arc plate 902 and the inner wall of the fixed box 901 respectively.

[0115] In summary:

[0116] The embodiment of the present invention provides a device for real-time monitoring of central venous pressure. The pressure sensor 10 is manually operated to drive the rectangular frame 705 to enter the interior of the central venous pressure sensor connector 6. At this time, the rectangular frame 705 will first squeeze the conical block 704, the sliding plate 703 and the first spring 702. When the surface of the pressure sensor 10 contacts the inner surface of the central venous pressure sensor connector 6, the first spring 702 will drive the sliding plate 703 and the conical block 704 to move in the direction of the rectangular frame 705, so that the conical block 704 enters the first through hole 706 opened in the rectangular frame 705, which is convenient for self-locking and fixing the rectangular frame 705, and then the pressure sensor 10 and the central venous pressure sensor connector 6 are quickly installed and automatically self-locked, so as to prevent the device from being damaged by external forces during use. This causes it to fall off, thereby improving the portability and firmness of the product during actual use. After use, the medical staff manually presses the two pressing plates 711 at the same time, so that the fixing block 710 and the second cone block 709 move downward, and the first cone block 708 drives the connecting block 707, the sliding plate 703 and the cone block 704 to move away from the first through hole 706, so that the cone block 704 releases the self-locking fixing effect on the rectangular frame 705, and the central venous catheter connector 1 and the central venous catheter 2 can be disassembled. The self-locking state between the cone block 704 and the rectangular frame 705 can be released by pressing the pressing plate 711 at the same time, thereby reducing the influence of external factors on the connection state between the central venous catheter connector 1 and the central venous catheter 2.

[0117] The device for real-time monitoring of central venous pressure provided by an embodiment of the present invention, when the sliding plate 703 drives the conical block 704 to move in the direction of the rectangular frame 705, the internal gas of the second airbag 808 is transported to the interior of the first airbag 806, causing it to expand and drive the sliding block 803, the connecting rod 804 and the annular sealing layer 805 to move. The connection between the pressure sensor 10 and the central venous pressure sensor connector 6 is sealed through the annular sealing layer 805 to prevent external air pressure from entering its interior from the connection, thereby preventing the real-time monitoring accuracy of the central venous pressure of the device from being affected.

[0118] The embodiment of the present invention provides a device for real-time monitoring of central venous pressure. When the valve body 11 on the measuring tube 4 needs to be opened, the handle 13 is manually operated to drive the valve stem 12 and the valve core to rotate. At this time, the valve stem 12 will drive the double-headed protrusion 908 to rotate, and the double-headed protrusion 908 will squeeze the arc plate 902, the liquid capsule 903 and the fourth spring 904 during the rotation process, and the liquid inside the liquid capsule 903 is transported to the inside of the annular frame 906 through the infusion tube 905, and then transported to the outer sleeve 907 and the inside of the measuring tube 4 through multiple water outlets, so as to increase the internal pressure of the pipeline, thereby increasing the overall rigidity and stability of the pipeline, thereby improving the bending resistance of the measuring tube 4, preventing the measuring tube 4 from bending due to patient movement during the central venous pressure monitoring process, and thus preventing the real-time monitoring accuracy of the device from being affected.

[0119] Working principle:

[0120] S1. Manually operate the pressure sensor 10 to drive the rectangular frame 705 into the central venous pressure sensor connector 6. At this time, the rectangular frame 705 will first squeeze the tapered block 704, the sliding plate 703 and the first spring 702. When the surface of the pressure sensor 10 contacts the inner surface of the central venous pressure sensor connector 6, the first spring 702 will drive the sliding plate 703 and the tapered block 704 to move in the direction of the rectangular frame 705, so that the tapered block 704 enters the first through hole 706 opened in the rectangular frame 705, thereby quickly installing and self-locking the pressure sensor 10 and the central venous pressure sensor connector 6.

[0121] S2. When the sliding plate 703 drives the conical block 704 to move toward the rectangular frame 705, the second airbag 808 is squeezed, and the gas inside the second airbag 808 is transported to the inside of the first airbag 806 through the air pipe 807, so that the second airbag 808 expands and drives the sliding block 803, the connecting rod 804 and the annular sealing layer 805 to move, and the connection between the pressure sensor 10 and the central venous pressure sensor connector 6 is sealed through the annular sealing layer 805;

[0122] S3, then connect the fixed and sealed infusion tube 3, measuring tube 4, pressure sensor 10 and central venous catheter connector 1 to the patient's internal central venous catheter 2. The central venous catheter 2 and central venous catheter connector 1 can be quickly installed and self-locked and fixed according to the above principle;

[0123] S4, after the infusion tube 3 is connected to the central venous catheter connector 1 and the central venous catheter 2, the other end of the infusion tube 3 is connected to the external infusion set through the infusion set connector 5, at this time, the valve body 11 on the infusion tube 3 is in the open state, and the valve body 11 on the measuring tube 4 is in the closed state;

[0124] S5. When the central venous pressure of the patient needs to be monitored, the valve body 11 on the measuring tube 4 is in an open state, and the valve body 11 on the infusion tube 3 is in a closed state. At this time, the physiological saline in the external infusion set will fill the measuring tube 4, and then the external infusion set is closed, so that the pressure sensor 10 can monitor and evaluate the central venous pressure of the patient in real time;

[0125] S6. When the valve body 11 on the measuring tube 4 needs to be opened, the handle 13 is manually operated to drive the valve stem 12 and the valve core to rotate. At this time, the valve stem 12 will drive the double-headed protrusion 908 to rotate, and the double-headed protrusion 908 will squeeze the arc plate 902, the liquid capsule 903 and the fourth spring 904 during the rotation process, and the liquid in the liquid capsule 903 is transported to the inside of the annular frame 906 through the infusion tube 905, and then transported to the outer sleeve 907 and the inside of the measuring tube 4 through multiple water outlets, so as to increase the bending resistance of the measuring tube 4 during use;

[0126] S7. After use, the medical staff manually presses the two pressing plates 711 at the same time, so that the fixing block 710 and the second cone block 709 move downward. During the downward movement, the second cone block 709 uses its inclined surface to cause the first cone block 708 to drive the connecting block 707 and the sliding plate 703 to squeeze the first spring 702, so that the sliding plate 703 drives the cone block 704 to move away from the first through hole 706, thereby releasing the self-locking fixing effect of the cone block 704 on the rectangular frame 705, and the central venous catheter connector 1 and the central venous catheter 2 can be disassembled and replaced.

[0127] In the above process, the real-time monitoring central venous pressure device and use method provided by the embodiment of the present invention do not require the assistance of third-party equipment or third-party staff for auxiliary operation, thereby reducing the number of overall equipment carried, making it convenient to use while ensuring accurate detection. When the valve body on the measuring tube needs to be opened, the handle is manually operated to drive the valve stem and the valve core to rotate. At this time, the valve stem will drive the double-headed protrusion to rotate, and the double-headed protrusion will transport the liquid inside the liquid bag through the infusion tube, the annular frame and multiple water outlets to the outer sleeve and the measuring tube during the rotation process, so as to increase the internal pressure of the pipeline, thereby increasing the overall rigidity and stability of the pipeline, thereby improving the bending resistance of the measuring tube, preventing the measuring tube from bending due to patient movement during the central venous pressure monitoring process, and thus preventing the real-time monitoring accuracy of the equipment from being affected.

[0128] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A device capable of real-time monitoring of central venous pressure, characterized in that: The central venous pressure device comprises: A central venous catheter connector, one end of which is connected to a central venous catheter; An infusion tube, one end of which is connected to the central venous catheter connector, and the infusion tube is arranged on a side away from the central venous catheter; The other end of the infusion tube is connected to an infusion device connector, a measuring tube is arranged on one side of the infusion tube, the measuring tube is arranged as a hose, one end of the measuring tube is connected to a central venous catheter connector, the other end of the measuring tube is connected to a central venous pressure sensor connector, the other side of the central venous pressure sensor connector is connected to a pressure sensor, and the pressure sensor is electrically connected to an external display and an alarm through a wire; A fixing component, wherein three fixing components are provided, and the three fixing components are respectively arranged inside the central venous catheter connector, the infusion device connector and the central venous pressure sensor connector; The anti-bending component is arranged above the measuring tube, and the anti-bending component comprises: a fixed box, the bottom of which is fixedly connected to the top of the valve body, and the fixed box is rotatably connected to the outer peripheral side of the valve stem through a bearing; A double-headed protrusion, the double-headed protrusion is fixedly connected to the outer peripheral side of the valve stem, and the double-headed protrusion is arranged inside the fixed box; an arc plate, two arc plates are provided, and the two arc plates are symmetrically arranged on the outer peripheral side of the double-headed protrusion; a liquid sac, one side of the liquid sac is fixedly connected to the arc plate, and the other side of the liquid sac is fixedly connected to the inner wall of the fixed box, one side of the liquid sac is connected to an infusion tube, and the other end of the infusion tube is connected to an annular frame, the inner peripheral side of the annular frame is fixedly connected to the outer wall of the measuring tube, an annular cavity is opened inside the annular frame, and a plurality of water outlets are connected to the outer peripheral side of the annular cavity, the water outlets are located inside the annular frame, and an outer sleeve is provided on the outer peripheral side of the annular frame, the anti-bending component opens the valve in response to the venous pressure test start-up program, squeezes and injects liquid on the outside of the measuring tube and injects infusion liquid into the measuring tube, thereby assisting the bending resistance of the measuring tube.

2. A device capable of real-time monitoring of central venous pressure according to claim 1, characterized in that: The bottoms of the central venous catheter connector, the infusion device connector and the central venous pressure sensor connector are arranged in an arc shape, and the fixing assembly comprises: A first cavity, wherein two first cavities are provided, and the two first cavities are symmetrically arranged inside the central venous catheter connector, the infusion device connector and the central venous pressure sensor connector respectively; A first spring, one side of which is fixedly connected to the inner wall of the central venous catheter connector, the infusion device connector and the central venous pressure sensor connector, and the other side of which is fixedly connected to a sliding plate, which is slidably connected to the inside of the first cavity; A conical block, one side of which is fixedly connected to the sliding plate, and the conical block is arranged on a side away from the first spring; A rectangular frame, one side of which is fixedly connected to the pressure sensor and the central venous catheter, and the rectangular frame is slidably connected to the inside of the first cavity, a first through hole is opened inside the rectangular frame, and the first through hole is clamped with the tapered block.

3. A device capable of real-time monitoring of central venous pressure according to claim 2, characterized in that: The fixing assembly also includes: A connecting block, the bottom of which is fixedly connected to the top of the sliding plate; A first cone block, wherein the bottom of the first cone block is fixedly connected to the top of the connecting block, a second cone block is arranged on the top of the first cone block, a fixing block is fixedly connected at the center of the top of the second cone block, and a pressing plate is fixedly connected to the top of the fixing block; The second spring is provided with two second springs, which are symmetrically arranged on both sides of the fixed block, and the two sides of the second spring are respectively fixedly connected to the inner wall of the pressing plate, the central venous catheter connector, the infusion device connector and the central venous pressure sensor connector.

4. The device capable of real-time monitoring of central venous pressure according to claim 3, characterized in that: A sealing component is provided on one side of the fixing component, and a plurality of sealing components are respectively arranged inside the central venous catheter connector, the infusion device connector and the central venous pressure sensor connector, and the sealing component includes: a second cavity, the second cavity being disposed inside the central venous catheter connector, the infusion set connector, and the central venous pressure sensor connector; A third spring, one side of the third spring is fixedly connected to the inner wall of the central venous catheter connector, the infusion device connector and the central venous pressure sensor connector, and the other side of the third spring is fixedly connected to a sliding block, and the sliding block is slidably connected inside the second cavity; A connecting rod, one end of which is fixedly connected to the sliding block, and the other end of which is fixedly connected to an annular sealing layer, which is arranged on the inner circumference of the pressure sensor and the central venous catheter, and the annular sealing layer and the connecting rod are both slidably sealed inside the second cavity.

5. The device capable of real-time monitoring of central venous pressure according to claim 4, characterized in that: The sealing assembly further comprises: A first airbag, the first airbag is arranged inside the second cavity, and two sides of the first airbag are respectively fixedly connected to the inner wall of the sliding block, the central venous catheter connector, the infusion device connector and the central venous pressure sensor connector, and one side of the first airbag is connected to the air delivery tube; The second airbag, one side of the second airbag is connected to the air supply pipe, the second airbag is arranged inside the first cavity, and the two sides of the second airbag are respectively fixedly connected to the sliding plate, the central venous catheter connector, the infusion device connector and the inner wall of the central venous pressure sensor connector.

6. The device capable of real-time monitoring of central venous pressure according to claim 5, characterized in that: The infusion tube and the measuring tube are both provided with a valve body, a valve core is rotatably connected inside the valve body, a valve stem is fixedly connected to the top of the valve core, and the top of the valve stem extends to the outside of the valve body and is fixedly connected to a rotating handle.

7. The device capable of real-time monitoring of central venous pressure according to claim 6, characterized in that: The anti-bending component is provided with one, and the anti-bending component is located on the top of the valve body on the measuring tube.

8. The device capable of real-time monitoring of central venous pressure according to claim 7, characterized in that: The two ends of the outer sleeve are respectively fixedly connected to the valve body, the central venous catheter connector and the outer wall of the infusion device connector.

9. The device capable of real-time monitoring of central venous pressure according to claim 8, characterized in that: The anti-bending component also includes: The fourth spring is provided with two fourth springs, and the two fourth springs are symmetrically arranged on the outer peripheral side of the liquid bag, and the two sides of the fourth spring are respectively fixedly connected to the arc plate and the inner wall of the fixed box.

10. A method for using a device capable of real-time monitoring of central venous pressure, characterized in that: A device capable of real-time monitoring of central venous pressure as described in any one of claims 1 to 9, comprising the following steps: S1. Manually operate the pressure sensor to drive the rectangular frame into the central venous pressure sensor connector. At this time, the rectangular frame will first squeeze the tapered block, the sliding plate and the first spring. When the surface of the pressure sensor contacts the inner surface of the central venous pressure sensor connector, the first spring will drive the sliding plate and the tapered block to move toward the rectangular frame, so that the tapered block enters the first through hole opened in the rectangular frame, thereby quickly installing and self-locking the pressure sensor and the central venous pressure sensor connector. S2, while the sliding plate drives the conical block to move toward the rectangular frame, it squeezes the second airbag, and transmits the gas inside the second airbag to the first airbag through the air pipe, so that it expands and drives the sliding block, the connecting rod and the annular sealing layer to move, and the connection between the pressure sensor and the central venous pressure sensor connector is sealed through the annular sealing layer; S3, then connect the fixed and sealed infusion tube, measuring tube, pressure sensor and central venous catheter connector to the patient's built-in central venous catheter. The central venous catheter and the central venous catheter connector can be quickly installed and self-locked fixed according to the above principle; S4. After the infusion tube is connected to the central venous catheter connector and the central venous catheter, the other end of the infusion tube is connected to the external infusion set through the infusion set connector. At this time, the valve body on the infusion tube is in an open state, and the valve body on the measuring tube is in a closed state; S5. When the patient's central venous pressure needs to be monitored, the valve body on the measuring tube is in an open state, and the valve body on the infusion tube is in a closed state. At this time, the physiological saline in the external infusion set will fill the measuring tube, and then the external infusion set is closed, so that the pressure sensor can monitor and evaluate the patient's central venous pressure in real time; S6. When the valve body on the measuring tube needs to be opened, the handle is manually operated to drive the valve stem and the valve core to rotate. At this time, the valve stem drives the double-headed protrusion to rotate, and the double-headed protrusion squeezes the arc plate, the liquid capsule and the fourth spring during the rotation process, and the liquid in the liquid capsule is transported to the inside of the annular frame through the infusion tube, and then transported to the outer sleeve and the inside of the measuring tube through multiple water outlets, so as to increase the bending resistance of the measuring tube during use; S7. After use, the medical staff manually presses the two pressing plates at the same time, so that the fixing block and the second cone block move downward. During the downward movement, the second cone block uses its inclined surface to cause the first cone block to drive the connecting block and the sliding plate to squeeze the first spring, so that the sliding plate drives the cone block to move away from the first through hole, thereby releasing the self-locking fixing effect of the cone block on the rectangular frame, and the central venous catheter connector and the central venous catheter can be disassembled and replaced.

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