Blood extracorporeal circulation pipeline temperature monitoring device and blood temperature measuring device

Abstract

The utility model provides a blood extracorporeal circulation pipeline temperature monitoring device and a blood temperature measuring device. The blood extracorporeal circulation pipeline temperature monitoring device comprises a blood temperature seat and a cover body, the blood temperature seat is provided with a groove part for containing a circulation pipeline, the cover body is provided with a pressing block, when the blood temperature seat covers the cover body, the pressing block limits the circulation pipeline on the groove part, and when the blood temperature seat covers the cover body, the pressing block presses the circulation pipeline on the groove part. A first temperature sensor for detecting the temperature of the outer surface of the circulating pipeline in the groove part and a second temperature sensor for detecting the temperature of the local environment where the circulating pipeline in the groove part is located are arranged in the blood temperature seat, and the first temperature sensor and the second temperature sensor are respectively connected with a controller; and the collected temperature information is sent to the controller. According to the utility model, the temperature of the outer surface of the circulating pipeline in the blood temperature seat and the temperature of the local environment can be accurately collected, and data support is provided for blood temperature analysis of the extracorporeal circulating pipeline.

Description

Technical Field

[0001] The utility model relates to the technical field of medical devices, and in particular to a blood extracorporeal circulation pipeline temperature monitoring device and a blood temperature measuring device, which can be used for monitoring the temperature of blood and its environment in a hemodialysis machine or a blood purification device. Background Art

[0002] Hemodialysis machines or blood purification equipment use external devices to filter blood, remove impurities from the blood, and circulate the cleaned blood into the patient's body through the circulation pipeline to achieve the purpose of treating the patient. As stated in the patent authorization announcement number CN212466709U and the patent name "A temperature measurement device with temperature control function for CRRT", the blood temperature needs to be regulated and monitored during the pipeline circulation process. The solution uses a temperature sensor to measure the temperature of the liquid in the pipeline, and the accuracy of the measurement of the liquid temperature in the pipeline is guaranteed by constant temperature control. However, in actual application, it is necessary to monitor the temperature inside and on the surface of the circulation pipeline and the local application environment, but the existing temperature measurement device does not have this function, resulting in incomplete and inaccurate temperature detection and large detection errors. At the same time, when patients undergo dialysis or blood purification directly, arteriovenous circulation will occur simultaneously, and existing equipment cannot monitor and detect the temperature of both arteriovenous circulation pipelines at the same time. Utility Model Content

[0003] In order to overcome the defects existing in the above-mentioned prior art, the purpose of the utility model is to provide a blood extracorporeal circulation pipeline temperature monitoring device, which can be used for hemodialysis or purification circulation pipeline temperature monitoring, and improves the comprehensiveness and accuracy of circulation pipeline blood temperature monitoring.

[0004] In order to achieve the above-mentioned purpose of the utility model, the utility model provides a blood extracorporeal circulation pipeline temperature monitoring device, including a blood temperature seat and a cover body, the blood temperature seat has a groove portion for accommodating the circulation pipeline, the cover body has a pressure block, when the blood temperature seat and the cover body are covered, the pressure block limits the circulation pipeline to the groove portion, wherein the blood temperature seat has a first temperature sensor for detecting the temperature of the outer surface of the circulation pipeline in the groove portion and a second temperature sensor for detecting the temperature of the local environment where the circulation pipeline in the groove portion is located, the first temperature sensor and the second temperature sensor are respectively connected to the controller to send the collected temperature information to the controller.

[0005] The device uses the blood temperature seat and the grooves and pressure blocks in the cover body to limit the circulation pipeline and form a temperature monitoring application environment. The first temperature sensor and the second temperature sensor are then used to monitor the temperature of the outer surface of the circulation pipeline and the local environment respectively, thereby improving the comprehensiveness and accuracy of various temperature monitoring parameters and forming complete temperature parameter data, which is convenient for the subsequent accurate analysis of blood temperature.

[0006] In an optional solution of the blood extracorporeal circulation pipeline temperature monitoring device, the inner side of the groove has a heat conductive sheet that can fit with the wall of the circulation pipeline, and when the blood temperature seat is covered with the cover body, the pressure block limits the circulation pipeline to the heat conductive sheet.

[0007] This optional solution utilizes the thermal conductivity of the heat conducting sheet to improve the heat conduction between the outer surface of the circulation pipe and the local environment, thereby enabling the heat conducting sheet to accurately and sensitively detect the temperature of the outer surface of the pipe.

[0008] In an optional solution of the blood extracorporeal circulation pipeline temperature monitoring device, the inner side of the thermal conductive sheet has a sensor positioning groove for placing and positioning the first temperature sensor. In this optional solution, the first temperature sensor is built into the positioning groove of the thermal conductive sheet, and the first temperature sensor and the thermal conductive sheet are both used as the local environment of the circulation pipeline, thereby avoiding the difference between the first temperature sensor itself and the local temperature and affecting the local temperature monitoring error.

[0009] In an optional solution of the blood extracorporeal circulation pipeline temperature monitoring device, a sensor pad is fixedly connected to the bottom of the blood temperature seat, and the sensor pad is supported by at least two heat conductive plate brackets to form the inner groove bottom of the groove. In this optional solution, the sensor pad and the blood temperature seat form a closed local environment of the circulation pipeline, reducing the impact of the outside world on the temperature inside the blood temperature seat and ensuring the accuracy of local temperature monitoring; at the same time, the heat conductive plate is integrated with the inner groove bottom of the groove, reducing the structural consumables of the device and having a high overall integration.

[0010] In an optional solution of the blood extracorporeal circulation pipeline temperature monitoring device, the second temperature sensor is positioned on the heat conducting plate bracket. In this optional solution, the second temperature sensor is used to independently monitor the local temperature, and the monitoring accuracy is high.

[0011] In an optional solution of the blood extracorporeal circulation pipeline temperature monitoring device, the bottom of the sensor pad is fixedly connected to a mounting seat connection block, and the bottom of the mounting seat connection block is provided with a fixed bracket and a fixed knob assembly thereon. In this optional solution, the knob positioning of the entire device is achieved by the fixed bracket and the fixed knob assembly, which ensures the relatively stable positioning of the entire device in the dialysis machine or purification equipment, and indirectly improves the monitoring stability of the entire device.

[0012] In an optional solution of the blood extracorporeal circulation pipeline temperature monitoring device, a positioning spring is connected between the pressing block and the cover body. In this optional solution, the positioning spring is used to achieve the tightness of the pressing block on the circulation pipeline when the cover is closed, so that the pressing block can provide a stable pressure on the circulation pipeline, thereby making the circulation pipeline and the heat conducting sheet close to ensure the continuity and stability of the temperature conduction on the outer surface of the circulation pipeline, and finally ensure the accuracy of monitoring the local temperature.

[0013] In an optional solution of the blood extracorporeal circulation pipeline temperature monitoring device, the number of the grooves is two, and the cover body is provided with the same number of the pressing blocks as the number of the grooves. In this optional solution, the arteriovenous dual channel monitoring of the blood circulation pipeline is realized by the double grooves, thereby improving the monitoring efficiency.

[0014] In an optional solution of the blood extracorporeal circulation pipeline temperature monitoring device, a Hall sensor is further included, a Hall element of the Hall sensor is arranged on the blood temperature seat, a magnetic steel corresponding to the position of the Hall element is arranged on the cover body, and a signal output end of the Hall sensor is connected to a controller. In this optional solution, the Hall sensor can detect the opening and closing state of the cover body.

[0015] In an optional solution of the blood extracorporeal circulation pipeline temperature monitoring device, one side of the cover body of the blood temperature seat is hinged by a first rotating shaft, and the other side is provided with a corresponding locking structure.

[0016] The present application also proposes a device for measuring the temperature of blood in an extracorporeal circulation pipeline, including the above-mentioned blood extracorporeal circulation pipeline temperature monitoring device, wherein the controller obtains the blood temperature in the extracorporeal circulation pipeline based on the temperature information collected by the first temperature sensor and the second temperature sensor, and the relationship coefficient between the temperature information and the blood temperature in the circulation pipeline.

[0017] The beneficial effects of the utility model are as follows: the utility model can accurately collect the temperature of the outer surface of the circulation pipe in the blood temperature seat and the temperature of the local environment, and provide data support for the blood temperature analysis of the extracorporeal circulation pipe.

[0018] Additional aspects and advantages of the present invention will be given in part in the following description, and in part will become apparent from the following description, or will be learned through the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The above and / or additional aspects and advantages of the present invention will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0020] Figure 1 This is an assembly structure diagram of the temperature measuring device in the utility model;

[0021] Figure 2 This utility model Figure 1 A top view of

[0022] Figure 3 This utility model Figure 2 Section view along line AA;

[0023] Figure 4 It is a stereoscopic diagram of the temperature measuring device in the utility model. DETAILED DESCRIPTION

[0024] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0025] In the description of the present utility model, unless otherwise specified and limited, it should be noted that the terms "installation", "connection" and "connection" should be understood in a broad sense. For example, it can be a mechanical connection or an electrical connection, or it can be the internal connection of two components. It can be a direct connection or an indirect connection through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms can be understood according to the specific circumstances.

[0026] like Figures 1 to 4 As shown, the utility model provides a blood extracorporeal circulation pipeline temperature monitoring device, including a blood temperature seat 1 and a cover body 6, the blood temperature seat 1 has a groove for accommodating the circulation pipeline, the cover body 6 has a pressing block 11, when the blood temperature seat 1 and the cover body 6 are covered, the pressing block 11 limits the circulation pipeline on the groove, the blood temperature seat 1 has a first temperature sensor 18 for detecting the temperature of the outer surface of the circulation pipeline in the groove and a second temperature sensor 22 for detecting the temperature of the local environment where the circulation pipeline in the groove is located, the first temperature sensor 18 and the second temperature sensor 22 are respectively connected to the controller to send the collected temperature information to the controller.

[0027] The blood temperature seat 1 and the grooves in the cover body 6 and the pressure block 11 are used to limit the circulation pipeline and form a temperature monitoring application environment. The first temperature sensor 18 and the second temperature sensor 22 are used to monitor the temperature of the outer surface of the circulation pipeline and the local environment respectively, thereby improving the comprehensiveness and accuracy of various temperature monitoring parameters and forming complete temperature parameter data, which is convenient for the accurate analysis of blood temperature in the later stage.

[0028] Specifically, the blood temperature seat 1 can be formed by sheet metal stamping, or a box-shaped structure with an open bottom formed by sheet metal welding, and a vertical through groove is set on the top of the blood temperature seat 1. A sensor pad 23 is fixedly connected to the bottom of the blood temperature seat 1, and the sensor pad 23 supports the heat conductive sheet 4 through at least two heat conductive sheet brackets 5 and 12 to form the inner groove bottom of the groove. The heat conductive sheet 4 is in contact with the wall of the circulation pipeline. When the blood temperature seat 1 is covered with the cover body 6, the pressing block 11 limits the circulation pipeline to the heat conductive sheet 4. At the same time, the second temperature sensor 22 is positioned on the heat conductive sheet brackets 5 and 12, and is used to detect the local ambient temperature of the circulation pipeline. Because the blood temperature seat 1 and the sensor pad 23 form a relatively closed space, there will not be much change in the process of detecting the local ambient temperature.

[0029] The inner side of the heat conducting sheet 4 has a sensor positioning groove for placing and positioning the first temperature sensor 18. The number of the first temperature sensor 18 can be one, two, or even more to ensure accurate temperature measurement of the outer surface of the circulation pipe.

[0030] The bottom of the sensor pad 23 is fixedly connected to the mounting seat connecting block 2. The bottom of the mounting seat connecting block 2 is provided with a fixing bracket 14 and a fixing knob assembly 13 thereon. The fixing bracket 14 cooperates with the fixing knob assembly 13 to form a fixed positioning for the entire temperature measuring device.

[0031] In order to ensure that the pressing block 11 is fixedly positioned on the circulation pipe, a positioning spring 21 is connected between the pressing block 11 and the cover body 6. When the cover is closed, the positioning spring 21 enables the pressing block 11 to provide a stable pressure on the circulation pipe, so that the circulation pipe and the heat conducting plate 4 are stably close to each other, ensuring stable temperature conduction.

[0032] In this case, there are two grooves, and the cover body 6 is provided with pressure blocks 11 with the same number as the grooves. In this way, during use, the device can perform simultaneous temperature detection on the arteriovenous circulation pipelines respectively, thereby improving the detection efficiency.

[0033] The blood extracorporeal circulation pipeline temperature monitoring device also includes a Hall sensor, a Hall element of the Hall sensor is arranged on the blood temperature seat 1, a magnetic steel corresponding to the position of the Hall element is arranged on the cover body 6, and the signal output end of the Hall sensor is connected to the controller. The Hall sensor can detect the opening and closing state of the cover body, reducing the influence of the external environment on the local environment of the blood temperature seat and the cover body.

[0034] Finally, in this case, the blood temperature seat 1 and the cover body 6 are hinged together. One side of the blood temperature seat 1 and the cover body 6 is hinged by a first rotating shaft 19, and the other side is provided with a corresponding locking structure, wherein a sleeve 3 is provided at the end of the blood temperature seat 1, and a torsion spring 9 and a buckle 8 are sleeved at the corresponding position of the cover body 6 through a second rotating shaft 20. When the cover is closed, the buckle 8 is directly buckled onto the sleeve 3 to form a locking structure.

[0035] The present application also provides a device for measuring blood temperature in an extracorporeal circulation pipeline, including the above-mentioned blood extracorporeal circulation pipeline temperature monitoring device, wherein the controller obtains the blood temperature in the extracorporeal circulation pipeline according to the temperature information collected by the first temperature sensor 18 and the second temperature sensor 22, and the relationship coefficient between the temperature information and the blood temperature in the circulation pipeline. The relationship coefficient between the temperature information and the blood temperature in the circulation pipeline is a known quantity and can be obtained based on a large amount of experimental test data.

[0036] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0037] Although the embodiments of the present invention have been shown and described, those skilled in the art will appreciate that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the claims and their equivalents.

Claims

1. A blood extracorporeal circulation pipeline temperature monitoring device, comprising a blood temperature seat (1) and a cover (6), wherein the blood temperature seat (1) has a groove for accommodating the circulation pipeline, and the cover (6) has a pressing block (11). When the blood temperature seat (1) and the cover (6) are covered, the pressing block (11) limits the circulation pipeline to the groove, characterized in that: The blood temperature seat (1) comprises a first temperature sensor (18) for detecting the temperature of the outer surface of the circulation pipe in the groove and a second temperature sensor (22) for detecting the temperature of the local environment in which the circulation pipe in the groove is located. The first temperature sensor (18) and the second temperature sensor (22) are respectively connected to a controller to send the collected temperature information to the controller.

2. A blood extracorporeal circulation pipeline temperature monitoring device according to claim 1, characterized in that: The inner side of the groove portion is provided with a heat conducting sheet (4) which can be fitted with the wall of the circulation pipeline. When the blood temperature seat (1) is covered with the cover body (6), the pressing block (11) limits the circulation pipeline to the heat conducting sheet (4).

3. A blood extracorporeal circulation pipeline temperature monitoring device according to claim 2, characterized in that: The inner side of the heat conducting sheet (4) has a sensor positioning groove for placing and positioning the first temperature sensor (18).

4. A blood extracorporeal circulation pipeline temperature monitoring device according to claim 3, characterized in that: A sensor pad (23) is fixedly connected to the bottom of the blood temperature seat (1), and the sensor pad (23) supports the heat conducting plate (4) through at least two heat conducting plate brackets (5, 12) to form the inner groove bottom of the groove.

5. A blood extracorporeal circulation pipeline temperature monitoring device according to claim 4, characterized in that: The second temperature sensor (22) is positioned on the heat conducting plate bracket (5, 12).

6. A blood extracorporeal circulation pipeline temperature monitoring device according to claim 4, characterized in that: The bottom of the sensor pad (23) is fixedly connected to a mounting seat connecting block (2), and the bottom of the mounting seat connecting block (2) is provided with a fixing bracket (14) and a fixing knob assembly (13) thereon.

7. The device for monitoring temperature of an extracorporeal blood circulation pipeline according to claim 1, characterized in that: A positioning spring (21) is connected between the pressing block (11) and the cover body (6).

8. The device for monitoring temperature of an extracorporeal blood circulation pipeline according to claim 1, characterized in that: The number of the grooves is two, and the cover body (6) is provided with the pressing blocks (11) whose number matches the number of the grooves.

9. The device for monitoring temperature of an extracorporeal blood circulation pipeline according to claim 1, characterized in that: It also comprises a Hall sensor, a Hall element of the Hall sensor is arranged on the blood temperature seat (1), a magnetic steel corresponding to the position of the Hall element is arranged on the cover body (6), and a signal output end of the Hall sensor is connected to a controller.

10. The device for monitoring temperature of an extracorporeal blood circulation pipeline according to claim 1, characterized in that: The blood temperature seat (1) is hinged to the cover body (6) on one side via a first rotating shaft (19), and a corresponding locking structure is provided on the other side.

11. A device for measuring blood temperature in an extracorporeal circulation pipeline, characterized in that: A blood extracorporeal circulation pipeline temperature monitoring device comprising the device according to any one of claims 1 to 10, wherein the controller obtains the blood temperature in the extracorporeal circulation pipeline based on the temperature information collected by the first temperature sensor (18) and the second temperature sensor (22), and the relationship coefficient between the temperature information and the blood temperature in the circulation pipeline.

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