Anti-dropping and anti-blocking device for monitoring end-expiratory carbon dioxide

Abstract

The invention discloses an end-expiratory carbon dioxide monitoring anti-falling and anti-blocking device. The device comprises an anti-falling sampling head and a suction device used for pumping out secretory fluid entering the anti-falling sampling head. The anti-falling sampling head comprises a middle tube, an anti-falling ring located on the front portion of the middle tube and used for being implanted into the nasal vestibule and ribs connecting the anti-falling ring and the middle tube, a vent hole is formed between every two adjacent ribs, and the anti-falling ring is larger than a nostril outlet. The rear end of the middle pipe is provided with a first pipe connector used for being connected with an end-expiratory carbon dioxide monitoring sampling pipe and a second pipe connector used for being connected with a suction device. According to the anti-falling sampling head, the technical problem that a sampling pipe is prone to falling off in end-expiratory carbon dioxide monitoring is solved, the problem that mucus secreted by the nasal cavity blocks a sampling pipeline can be solved through the arranged suction device, and therefore long-time stable monitoring of end-expiratory carbon dioxide can be guaranteed.

Description

Technical Field

[0001] The present invention relates to the technical field of medical devices, and in particular to a device for assisting end-tidal carbon dioxide monitoring. Background Art

[0002] The end-tidal CO2 concentration or partial pressure can reflect the pulmonary ventilation status. The normal range of the end-tidal CO2 partial pressure is 35-45 mmHg. The end-tidal CO2 concentration of 5% is equivalent to 5 KPa (38 mmHg). In the prior art, when performing end-tidal carbon dioxide monitoring, the sampling tube used to collect end-tidal CO2 is fixed by tape, and the air inlet end of the sampling tube is placed in the nasal vestibule. The normal end-tidal CO2 partial pressure monitoring waveform is roughly rectangular and consists of 4 different stages of the respiratory cycle (as shown in the instruction manual). Figure 1 Phase A is the baseline, representing the beginning of exhalation. The exhaled air is the dead space gas in the respiratory tract, and the CO2 content is extremely low, which can be regarded as 0; Phase B is the ascending branch of exhalation, which is a mixture of dead space gas and alveolar gas. As the exhalation process, the proportion of alveolar gas increases, and the CO2 concentration in the exhaled mixed gas increases rapidly; Phase C is the expiratory plateau, which is almost a horizontal line, representing the end of exhalation. The exhaled air is alveolar gas with a high concentration of CO2. The CO2 partial pressure at the end of the plateau is the highest, and the highest value is the end-tidal CO2 partial pressure (P ET CO2); Phase D is the descending branch of inspiration, which drops sharply to the baseline level, representing the beginning of the inspiration process, and the CO2 concentration drops sharply to 0. When the cardiopulmonary function is normal, P ET The normal value of CO2 is 35-40 mmHg (1 mmHg = 0.133 kPa).

[0003] After general anesthesia surgery, during the patient's recovery in the recovery room, monitoring the patient's end-tidal CO2 partial pressure can detect ventilation abnormalities early and ensure the patient's safety.

[0004] However, the existing methods for monitoring the end-tidal carbon dioxide partial pressure have the following problems: First, the sampling tube for collecting end-tidal CO2 is fixed by tape, which has low reliability and is easy to fall off; second, the sampling tube has a small diameter and is easily blocked by the patient's nasal secretions, making continuous monitoring difficult and affecting the observation of the patient's condition. Medical staff need to adjust and replace it frequently, which is not conducive to improving nursing work efficiency. Summary of the invention

[0005] In view of this, the purpose of the present invention is to provide an anti-falling and anti-blocking device for end-tidal carbon dioxide monitoring, so as to solve the technical problem that the sampling tube in end-tidal carbon dioxide monitoring is easily fallen off and blocked, making it impossible to maintain long-term stable monitoring of end-tidal carbon dioxide.

[0006] The end-tidal carbon dioxide monitoring anti-falling and anti-blocking device of the present invention comprises an anti-falling sampling head and a suction device for extracting secretion liquid entering the anti-falling sampling head;

[0007] The anti-slip sampling head includes a middle tube, an anti-slip ring located at the front of the middle tube for implantation in the nasal vestibule, and ribs connecting the anti-slip ring and the middle tube, with vents formed between adjacent ribs. The anti-slip ring is larger than the nostril outlet, and the rear end of the middle tube is provided with a first tube interface for connecting to an end-tidal carbon dioxide monitoring sampling tube and a second tube interface for connecting to a suction device.

[0008] Furthermore, the suction device includes an air pump, a suction pipe and a check valve, the front end of the suction pipe is connected to the second pipe interface of the anti-detachment sampling head, the rear end of the suction pipe is connected to the inlet of the air pump, and the check valve is arranged on the suction pipe.

[0009] Furthermore, the suction device further comprises a filter, and the filter is arranged on the suction pipe between the check valve and the air pump.

[0010] Furthermore, the side of the anti-slip ring that contacts the inner wall of the nasal vestibule is an arc-shaped surface.

[0011] Beneficial effects of the present invention:

[0012] The present invention discloses an anti-detachment and anti-blocking device for end-tidal carbon dioxide monitoring, wherein the anti-detachment sampling head is connected to the nasal vestibule via an anti-detachment ring, and the anti-detachment ring is larger than the nostril outlet, so that the anti-detachment ring cannot automatically fall out after being implanted in the nasal vestibule, thereby solving the technical problem that the sampling tube is easy to fall off in end-tidal carbon dioxide monitoring. Moreover, the vents formed between adjacent ribs in the anti-detachment sampling head can ensure normal exhalation and inhalation of the patient.

[0013] When mucus secreted from the nasal cavity enters the middle tube of the anti-drop sampling head, the secretion liquid entering the middle tube is extracted by the vacuum pump to eliminate the blockage, thereby restoring the end-tidal carbon dioxide monitoring to normal, thereby ensuring long-term and stable monitoring of end-tidal carbon dioxide. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is a schematic diagram of the end-tidal carbon dioxide partial pressure monitoring waveform.

[0015] Figure 2 This is a schematic diagram of the three-dimensional structure of the end-tidal carbon dioxide monitoring and anti-dehydration and anti-blockage device. DETAILED DESCRIPTION

[0016] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0017] In this embodiment, the end-tidal carbon dioxide monitoring anti-slip and anti-blocking device includes an anti-slip sampling head and a suction device for extracting secretion liquid entering the anti-slip sampling head.

[0018] The anti-slip sampling head includes a middle tube 1, an anti-slip ring 2 located at the front of the middle tube for implantation in the nasal vestibule, and ribs 3 connecting the anti-slip ring and the middle tube, with vents formed between adjacent ribs, and the anti-slip ring being larger than the nostril outlet. In a specific implementation, the anti-slip ring can be supported by silicone, which is comfortable to contact with the skin. The rear end of the middle tube is provided with a first tube interface 4 for connecting the end-tidal carbon dioxide monitoring sampling tube and a second tube interface 5 for connecting the suction device.

[0019] In this embodiment, the suction device includes an air pump 6, a suction pipe 7 and a check valve 8. The front end of the suction pipe is connected to the second pipe interface of the anti-detachment sampling head, and the rear end of the suction pipe is connected to the inlet of the air pump. The check valve is arranged on the suction pipe.

[0020] When performing end-tidal carbon dioxide monitoring, the anti-detachment ring 2 of the anti-detachment sampling head is implanted into the patient's nasal vestibule, the first tube interface 4 is connected to the sampling tube 10 of the end-tidal carbon dioxide monitor 9, the second tube interface 5 is connected to the suction tube 7, and the control signal output end of the end-tidal carbon dioxide monitor 9 is connected to the suction pump 6. During the monitoring process, the gas exhaled by the patient enters the end-tidal carbon dioxide monitor 9 through the middle tube 1 and the sampling tube 10. When the end-tidal carbon dioxide monitor 9 detects that the end-tidal carbon dioxide partial pressure (or concentration) is abnormal, the end-tidal carbon dioxide monitor 9 first sends a control signal to the suction pump 6 to make the suction pump 6 work to pump air, thereby discharging the secretion liquid entering the middle tube 1; if the end-tidal carbon dioxide monitoring value returns to normal after the suction pump 6 is operated to pump air and discharge liquid, the end-tidal carbon dioxide monitor 9 will not send an alarm signal; if the end-tidal carbon dioxide monitoring value cannot return to normal after the suction pump 6 is operated to pump air and discharge liquid, the end-tidal carbon dioxide monitor 9 sends an alarm signal to remind medical staff.

[0021] As an improvement to the above embodiment, the suction device further comprises a filter 11, which is arranged on the suction pipe between the check valve and the suction pump. The improvement filters out the mucus in the pipe by arranging the filter 11, thereby avoiding the problem of mucus discharge polluting the air.

[0022] As an improvement to the above-mentioned embodiment, the side of the anti-slip ring that contacts the inner wall of the nasal vestibule is an arc-shaped surface. This improvement makes the connection between the anti-slip ring and the nasal vestibule more comfortable.

[0023] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the present invention may be modified or replaced by equivalents, but these essentially the same modifications or equivalent replacements should also be included in the scope of the claims of the present invention.

Claims

1. A device for monitoring end-tidal carbon dioxide and preventing loss and blocking, characterized in that: It includes an anti-slip sampling head and a suction device for extracting secretion liquid entering the anti-slip sampling head; The anti-slip sampling head includes a middle tube, an anti-slip ring located at the front of the middle tube for implantation in the nasal vestibule, and ribs connecting the anti-slip ring and the middle tube, with vents formed between adjacent ribs. The anti-slip ring is larger than the nostril outlet, and the rear end of the middle tube is provided with a first tube interface for connecting to an end-tidal carbon dioxide monitoring sampling tube and a second tube interface for connecting to a suction device.

2. The end-tidal carbon dioxide monitoring and anti-falling and anti-blocking device according to claim 1 is characterized in that: The suction device includes an air pump, a suction pipe and a check valve. The front end of the suction pipe is connected to the second pipe interface of the anti-detachment sampling head, the rear end of the suction pipe is connected to the inlet of the air pump, and the check valve is arranged on the suction pipe.

3. The end-tidal carbon dioxide monitoring and anti-falling and anti-blocking device according to claim 1 is characterized in that: The suction device further comprises a filter, which is arranged on the suction pipe between the check valve and the suction pump.

4. The end-tidal carbon dioxide monitoring and anti-loss and anti-blocking device according to claim 1, characterized in that: The side of the anti-slip ring that contacts the inner wall of the nasal vestibule is an arc-shaped surface.

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