Deep venipuncture integrated device for monitoring pH value of blood in blood vessel and use method of deep venipuncture integrated device

Abstract

The invention discloses a deep vein puncture integrated device for monitoring the pH value of blood in a blood vessel and a use method, and belongs to the technical field of medical equipment, the deep vein puncture integrated device comprises a remaining needle catheter, the remaining needle catheter comprises a first pipeline and a second pipeline which are relatively independent, the first pipeline is used for conveying therapeutic liquid, and the second pipeline is used for blood sampling; the three-way valve is arranged on the indwelling needle seat, three ports of the three-way valve are communicated with the second pipeline, the pH value detection unit and the flushing fluid unit respectively, and the three-way valve is provided with a knob used for driving the three-way valve to be switched among different working positions; the control module is in signal connection with the pH value detection unit, the three-way valve driver and external clinical equipment. The whole process of sampling, detecting and flushing can be automatically and intermittently completed according to the preset period, and an almost continuous pH value dynamic change trend curve is provided, so that intervention is performed before clinical symptoms are obviously deteriorated, and the timeliness and accuracy of treatment are remarkably improved.

Description

Technical Field

[0001] This invention belongs to the field of medical device technology, and specifically relates to an integrated device for monitoring intravascular blood pH and its usage method. Background Technology

[0002] Maintaining homeostasis, especially acid-base balance, is a crucial core treatment goal in the treatment of critically ill patients (such as those undergoing major surgery, severe trauma, or septic shock). However, during surgery, the surgical procedure and anesthesia can disrupt the patient's homeostasis, causing dynamic fluctuations in pH levels. Continuous monitoring of pH levels is necessary to support clinical decision-making. Therefore, there is an urgent need for an integrated deep vein puncture device for monitoring intravascular blood pH and its usage method. Summary of the Invention

[0003] To achieve the above objectives, the present invention adopts the following technical solution: An integrated device for monitoring intravascular blood pH via deep vein puncture includes: An indwelling needle catheter, comprising a relatively independent first tubing and a second tubing, wherein the first tubing is used to deliver therapeutic fluids and the second tubing is used for blood sampling; A three-way valve is mounted on the indwelling needle seat, and its three ports are respectively connected to the second pipeline, the pH detection unit, and the flushing fluid unit. The three-way valve is equipped with a knob, and the knob is detachably connected to a three-way valve driver. The housing of the three-way valve driver is fixed on the indwelling needle seat and is used to drive the three-way valve to switch between different working positions. The pH detection unit includes a suction pump and a pH meter. The control module is connected to the pH detection unit, the three-way valve driver, and external clinical equipment signals.

[0004] Furthermore, the indwelling needle seat is provided with a slot, the three-way valve driver is provided with a protrusion that cooperates with the slot, and the driving end of the three-way valve driver is detachably connected to the knob.

[0005] Furthermore, the external clinical equipment includes at least one of a ventilator, a monitor, and an anesthesia machine.

[0006] Furthermore, the pH detection unit includes: The third pipeline has a first end connected to the three-way valve, and a second end that is detachably connected in sequence along the fluid direction to a suction pump, a pH meter, and a waste liquid tank. The third pipeline is equipped with a first one-way valve.

[0007] Furthermore, a second check valve is also provided between the second pipeline and the three-way valve.

[0008] Furthermore, the flushing fluid unit includes: The fourth pipeline has a first end connected to the three-way valve and a second end connected to a heparinized saline flushing bag. A third one-way valve is installed on the fourth pipeline.

[0009] Furthermore, the inlet of the second pipeline is located on the side wall of the second pipeline.

[0010] Furthermore, the inlet of the second tubing is one or more side holes to reduce the dilution of the extracted blood sample by the infusion fluid from the first tubing.

[0011] A method of using an integrated device for monitoring intravascular blood pH, comprising any of the aforementioned integrated devices for monitoring intravascular blood pH, including: Under normal circumstances, the control module controls the three-way valve driver and pH detection unit to perform the following cycle according to the first preset cycle: switch the three-way valve to the position that connects the second pipeline to the pH detection unit, and start the suction pump of the pH detection unit to draw blood samples to the pH detection unit for analysis. After the analysis is completed, switch the three-way valve to the position that connects the flushing fluid unit to the second pipeline and start the suction pump to flush the pipeline. The first preset cycle is 5-15 minutes. In abnormal situations, upon receiving an abnormal status signal from an external clinical device, the execution cycle of the loop is adjusted from the first preset cycle to a shorter second preset cycle, which is 1-3 minutes. The abnormal status signal includes at least one of decreased blood oxygen saturation, abnormal heart rate, or abnormal blood pressure.

[0012] The beneficial effects of this invention are: This invention can automatically and intermittently complete the entire process of "sampling-detection-rinsing" according to a preset cycle, providing a nearly continuous dynamic trend curve of pH value change. Anesthesiologists or ICU physicians can intuitively see the direction and rate of pH value change, realizing early warning of latent acidosis / alkalosis, thereby intervening before clinical symptoms deteriorate significantly, and significantly improving the timeliness and accuracy of treatment. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the structure of an integrated deep vein puncture device for monitoring intravascular blood pH value according to the present invention.

[0014] In the diagram: 1. Indwelling needle hub; 2. First tubing; 3. Second tubing; 4. Third tubing; 5. Fourth tubing; 6. First check valve; 7. Second check valve; 8. Third check valve; 9. Suction pump; 10. pH meter; 11. Waste liquid tank; 12. Heparin saline flushing bag; 13. Stop clamp. Detailed Implementation

[0015] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0016] This section will describe in detail specific embodiments of the present invention. Preferred embodiments of the present invention are shown in the accompanying drawings. The purpose of the drawings is to supplement the textual description with graphics, so that people can intuitively and vividly understand each technical feature and overall technical solution of the present invention, but they should not be construed as limiting the scope of protection of the present invention.

[0017] In the description of this invention, it should be understood that the orientation descriptions, such as up, down, front, back, left, right, etc., are based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limiting this invention.

[0018] In the description of this invention, "several" means one or more, "more than" means two or more, "greater than," "less than," and "exceeding" are understood to exclude the stated number, while "above," "below," and "within" are understood to include the stated number. The use of "first" and "second" in the description is merely for distinguishing technical features and should not be construed as indicating or implying relative importance, or implicitly indicating the number of indicated technical features, or implicitly indicating the order of the indicated technical features.

[0019] In the description of this invention, unless otherwise explicitly defined, terms such as "set up," "install," and "connect" should be interpreted broadly, and those skilled in the art can reasonably determine the specific meaning of the above terms in this invention in conjunction with the specific content of the technical solution.

[0020] Example 1

[0021] refer to Figure 1 An integrated device for monitoring intravascular blood pH via deep vein puncture, comprising: An indwelling needle catheter includes a relatively independent first tubing 2 and a second tubing 3. The first tubing 2 is used to deliver therapeutic fluids, and the second tubing 3 is used for blood sampling. Three-way valve 14 is installed on the indwelling needle seat 1, and its three ports are respectively connected to the second pipeline 3, the pH detection unit and the flushing fluid unit. The three-way valve 14 is equipped with a knob, and the knob is detachably connected to a three-way valve driver. The housing of the three-way valve driver is fixed on the indwelling needle seat and is used to drive the three-way valve to switch between different working positions. The control module is connected to the pH detection unit, the three-way valve actuator, and the external clinical equipment signals.

[0022] This invention can automatically and intermittently complete the entire "sampling-detection-rinsing" process according to a preset cycle, providing a near-continuous dynamic trend curve of pH value changes. Anesthesiologists or ICU physicians can intuitively see the direction and rate of pH value changes, enabling early warning of latent acidosis / alkalosis, and thus allowing intervention before clinical symptoms significantly worsen, significantly improving the timeliness and accuracy of treatment.

[0023] In this embodiment, the indwelling needle seat 1 is provided with a slot, the three-way valve driver is provided with a protrusion that cooperates with the slot, and the driving end of the three-way valve driver is detachably connected to the knob.

[0024] In practice, the detachable connection design between the three-way valve actuator and the disposable three-way valve stopcock, as well as the way it is fixed on the indwelling needle hub, achieves the separation of the drive mechanism (reusable) from the consumable tubing (disposable). This controls usage costs and makes clinical operation extremely simple.

[0025] In this embodiment, the external clinical equipment includes at least one of a ventilator, a monitor, and an anesthesia machine.

[0026] In this embodiment, the pH detection unit includes: The third pipeline 4 has a first end connected to a three-way valve, and the second end is detachably connected to a suction pump 9, a pH meter 10 and a waste liquid tank 11 in sequence along the fluid direction. A first one-way valve 6 is installed on the third pipeline 4.

[0027] In practice, the second tubing is only used to draw a very small amount of blood (about tens of microliters each time), which has no effect on the patient's circulation. This reduces the risks of pain, hematoma and infection caused by repeated punctures.

[0028] In practice, liquid stop clamps 13 are installed on the first pipeline 2 and the third pipeline 4.

[0029] In this embodiment, a second check valve 7 is also provided between the second pipeline 3 and the three-way valve.

[0030] In this embodiment, the flushing fluid unit includes: The fourth pipeline 5 has a first end connected to a three-way valve and a second end connected to a heparinized saline flushing bag 12. A third one-way valve 8 is installed on the fourth pipeline 5.

[0031] In this embodiment, the liquid inlet of the second pipeline 3 is located on the side wall of the second pipeline 3.

[0032] In this embodiment, the inlet of the second pipeline 3 is one or more side holes to reduce the dilution of the extracted blood sample by the infusion fluid from the first pipeline 2.

[0033] In practice, the second pipeline uses a side-wall inlet, which effectively reduces the dilution of the collected blood sample by the liquid continuously infused by the first pipeline, ensuring the representativeness of the sample and the accuracy of the test results.

[0034] Example 2

[0035] This embodiment provides a method for using an integrated device for monitoring intravascular blood pH using deep vein puncture. The integrated device for monitoring intravascular blood pH using deep vein puncture, as described in Embodiment 1, includes: Under normal circumstances, the control module controls the three-way valve driver and pH detection unit to perform the following cycle according to the first preset cycle: switch the three-way valve to the position that connects the second pipeline 3 to the pH detection unit, and start the suction pump 9 of the pH detection unit to draw blood samples to the pH detection unit for analysis. After the analysis is completed, switch the three-way valve to the position that connects the flushing fluid unit to the second pipeline and start the suction pump 9 to flush the pipeline. The first preset cycle is 5-15 minutes. In abnormal situations, upon receiving an abnormal status signal from an external clinical device, the execution cycle of the cycle is adjusted from a first preset cycle to a shorter second preset cycle, which is 1-3 minutes. The abnormal status signal includes at least one of decreased blood oxygen saturation, abnormal heart rate, or abnormal blood pressure.

[0036] In practice, when abnormal fluctuations in a patient's vital signs are detected (such as a sudden drop in blood oxygen saturation or a rapid drop in blood pressure), the system can automatically switch the monitoring frequency from a regular cycle (such as every 10 minutes) to a high-frequency emergency cycle (such as every 2 minutes). This ensures that high temporal resolution data is provided during the most unstable and intensive monitoring phases, while reducing unnecessary blood sampling when the patient's condition is stable.

[0037] The above description is merely a preferred embodiment of the present invention and is not intended to limit the invention. Various modifications and variations can be made to the present invention by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention are included within the scope of protection of the present invention.

Claims

1. An integrated device for monitoring intravascular blood pH, characterized in that, include: An indwelling needle catheter, comprising a relatively independent first tubing and a second tubing, wherein the first tubing is used to deliver therapeutic fluids and the second tubing is used for blood sampling; A three-way valve is mounted on the indwelling needle seat, and its three ports are respectively connected to the second pipeline, the pH detection unit, and the flushing fluid unit. The three-way valve is equipped with a knob, and the knob is detachably connected to a three-way valve driver. The housing of the three-way valve driver is fixed on the indwelling needle seat and is used to drive the three-way valve to switch between different working positions. The pH detection unit includes a suction pump and a pH meter. The control module is connected to the pH detection unit, the three-way valve driver, and external clinical equipment signals.

2. The integrated device for monitoring intravascular blood pH as described in claim 1, characterized in that, The indwelling needle seat is provided with a slot, the three-way valve driver is provided with a protrusion that cooperates with the slot, and the driving end of the three-way valve driver is detachably connected to the knob.

3. The integrated device for monitoring intravascular blood pH as described in claim 1, characterized in that, The external clinical equipment includes at least one of a ventilator, a monitor, and an anesthesia machine.

4. The integrated device for monitoring intravascular blood pH as described in claim 1, characterized in that, The pH detection unit includes: The third pipeline has a first end connected to the three-way valve, and a second end that is detachably connected in sequence along the fluid direction to a suction pump, a pH meter, and a waste liquid tank. The third pipeline is equipped with a first one-way valve.

5. The integrated device for monitoring intravascular blood pH as described in claim 1, characterized in that, A second check valve is also provided between the second pipeline and the three-way valve.

6. The integrated device for monitoring intravascular blood pH as described in claim 1, characterized in that, The flushing fluid unit includes: The fourth pipeline has a first end connected to the three-way valve and a second end connected to a heparinized saline flushing bag. A third one-way valve is installed on the fourth pipeline.

7. The integrated device for monitoring intravascular blood pH as described in claim 1, characterized in that, The inlet of the second pipeline is located on the side wall of the second pipeline.

8. The integrated device for monitoring intravascular blood pH as described in claim 7, characterized in that, The inlet of the second tubing is one or more side holes to reduce the dilution of the extracted blood sample by the infusion fluid from the first tubing.

9. A method of using the integrated deep vein puncture device for monitoring intravascular blood pH as described in any one of claims 1-8, characterized in that, include: Under normal circumstances, the control module controls the three-way valve driver and pH detection unit to perform the following cycle according to the first preset cycle: switch the three-way valve to the position that connects the second pipeline to the pH detection unit, and start the suction pump of the pH detection unit to draw blood samples to the pH detection unit for analysis. After the analysis is completed, switch the three-way valve to the position that connects the flushing fluid unit to the second pipeline and start the suction pump to flush the pipeline. The first preset cycle is 5-15 minutes. In abnormal situations, upon receiving an abnormal status signal from an external clinical device, the execution cycle of the loop is adjusted from the first preset cycle to a shorter second preset cycle, which is 1-3 minutes. The abnormal status signal includes at least one of decreased blood oxygen saturation, abnormal heart rate, or abnormal blood pressure.

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