PH value monitoring device for gastric mucosa

Abstract

The invention provides a gastric mucosa PH value monitoring device which comprises a stomach tube body, a probe containing cavity is formed in the stomach tube body, a PH probe is telescopically arranged in the probe containing cavity, and a detection die head is arranged on the PH probe; the stomach tube body is used for being inserted into the stomach of a patient, and the detection die head on the PH probe extends out of the probe containing cavity to detect the PH value of the gastric mucosa. The problem that in the prior art, due to the fact that a PH sensor is prone to adhering to gastric juice of other parts, PH value detection at the gastric mucosa is inaccurate is solved.

Description

Technical Field

[0001] The present application relates to the technical field of gastric juice pH value detection, and more specifically, to a gastric mucosal pH value monitoring device. Background Art

[0002] During the patient's gastric medical treatment, a gastric tube is commonly used to attract and inject food, which is beneficial to the healing of the anastomosis after surgery, relieves abdominal distension, promotes early intestinal peristalsis, etc. Liquid food can also be injected through the gastric tube into patients who cannot eat orally to ensure that the patient takes in enough nutrition, water and medicine.

[0003] There are existing tools that set a PH sensor on the gastric tube to detect the PH value of different positions of the stomach and intestines. However, since the PH sensor performs detection at various positions during the insertion of the gastric tube, gastric juice from different positions continues to stick to the PH sensor. The PH sensor itself has a small structure, and after it sticks to gastric juice from other positions, it has a great influence on the PH detection result. For example, when detecting the PH value at the gastric mucosa, the PH sensor sticks to gastric juice from other positions during the process of entering the gastric mucosa, resulting in inaccurate detection of the PH value at the gastric mucosa.

[0004] Therefore, the prior art still needs to be improved and developed. Summary of the invention

[0005] The purpose of the present application is to provide a gastric mucosal pH monitoring device, which solves the problem in the prior art that the pH sensor is easily adhered to gastric juice in other parts, resulting in inaccurate pH value detection at the gastric mucosa.

[0006] To achieve the above purpose, the technical solution adopted in this application is:

[0007] The present application provides a gastric mucosal pH monitoring device, comprising:

[0008] The stomach tube body has a probe accommodating cavity, a PH probe is retractably arranged in the probe accommodating cavity, and a detection die is arranged on the PH probe;

[0009] The gastric tube body is used to be inserted into the patient's stomach, and the detection die head on the pH probe is extended out of the probe accommodating cavity to detect the pH value of the gastric mucosa.

[0010] Optionally, a telescopic component is provided in the stomach tube body, the telescopic component is connected to the PH probe, and the PH probe moves along the probe accommodating cavity through the action of the telescopic component;

[0011] The PH probe cooperates with the probe accommodating cavity to seal the probe accommodating cavity, and the detection die head is extended out or accommodated in the probe accommodating cavity through the movement of the PH probe.

[0012] Optionally, the telescopic assembly includes: an elastic member, the elastic member connecting the probe accommodating cavity and the pH probe;

[0013] Pull the wire, which is connected to the pH probe and extends along the gastric tube to the outside of the patient's body;

[0014] The elastic member is contracted by tightening the pull wire, so that the detection die head is accommodated in the probe accommodating cavity;

[0015] Alternatively, the elastic member is released by loosening the pull wire, and the detection die head is pushed out of the probe accommodating cavity.

[0016] Optionally, the PH probe comprises a probe housing, and the probe housing is movably disposed in the probe accommodating cavity;

[0017] The detection die head is arranged on the side of the probe housing.

[0018] Optionally, a sealing ring is fixedly arranged in the opening of the probe accommodating cavity, the sealing ring is sleeved on the probe housing, and the probe housing moves in the sealing ring.

[0019] Optionally, the detection die head can be retractably arranged in the probe housing;

[0020] The movable detection die head is contracted by the squeezing of the sealing ring so as to enter and exit the probe accommodating cavity.

[0021] Optionally, arc chamfers are provided at both ends of the detection die head along the inlet and outlet directions.

[0022] Optionally, guide fillets are provided at both ends of the sealing ring along the entry and exit directions.

[0023] Optionally, a plurality of detection dies are provided, and the plurality of detection dies are distributed along the axial direction and / or circumferential direction of the PH probe.

[0024] Optionally, a plurality of detection dies are electrically connected to a monitoring host;

[0025] The monitoring host detects multiple pH values ​​at different positions of the gastric mucosa through multiple detection dies to determine the current pH value of the gastric mucosa.

[0026] The beneficial effect of a gastric mucosal pH monitoring device provided by the present application is at least that: a probe accommodating cavity is provided on the gastric tube body, and a pH probe is retractably provided in the probe accommodating cavity. In the initial state, the pH probe is accommodated in the probe accommodating cavity. Before the gastric tube body is inserted into the patient's stomach and reaches the position of the gastric mucosa, the liquid in other parts cannot contact the detection die of the pH probe due to the obstruction of the probe accommodating cavity. After reaching the position of the gastric mucosa, the detection die on the pH probe is extended out of the probe accommodating cavity to detect the pH value of the gastric mucosa. Therefore, in the process of the gastric tube body extending into the patient's body, it will not contact the liquid in other parts, and the detection will be performed only after reaching the gastric mucosa, thereby improving the detection accuracy and making the pH value detection at the gastric mucosa more accurate. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0028] Figure 1 A schematic diagram of a first structure of a gastric mucosal pH monitoring device provided in an embodiment of the present application;

[0029] Figure 2 A partial structural diagram of a second structure of a gastric mucosal pH monitoring device provided in an embodiment of the present application;

[0030] Figure 3 A cross-sectional view of a second structural schematic diagram of a gastric mucosal pH monitoring device provided in an embodiment of the present application;

[0031] Figure 4 A cross-sectional view of a pH probe of a gastric mucosal pH monitoring device provided in an embodiment of the present application being accommodated in a probe accommodating cavity;

[0032] Figure 5 A half-section view of a pH probe of a gastric mucosal pH monitoring device provided in an embodiment of the present application, during the process of extending out of a probe accommodating cavity;

[0033] Figure 6 A cross-sectional view of a pH probe of a gastric mucosal pH monitoring device provided in an embodiment of the present application after extending out of a probe accommodating cavity.

[0034] Among them, the reference numerals in the figure are:

[0035] 100, gastric tube body; 110, main tube; 111, branch tube; 120, probe accommodating cavity; 130, sealing ring; 131, guide fillet; 132, guide boss; 133, spring pressure strip; 134, support ball; 135, deformation gap; 200, PH probe; 210, probe shell; 211, installation cavity; 212, micro switch; 220, detection die; 221, arc chamfer; 222, second spring; 300, telescopic assembly; 310, elastic member; 320, pull wire. DETAILED DESCRIPTION

[0036] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present application more clearly understood, the present application 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 application and are not used to limit the present application.

[0037] It should be noted that when a component is referred to as being "fixed on" or "disposed on" another component, it may be directly or indirectly located on the other component. When a component is referred to as being "connected to" another component, it may be directly or indirectly connected to the other component. The directions or positions indicated by the terms "upper", "lower", "left", "right", "front", "back", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc. are based on the directions or positions shown in the accompanying drawings and are only for the convenience of description and cannot be understood as limitations on the present technical solution. The terms "first" and "second" are only used for the convenience of description and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features. "Multiple" means two or more, unless otherwise clearly and specifically defined.

[0038] like Figure 1 , Figure 2 , Figure 3As shown, this embodiment proposes a gastric mucosal pH monitoring device, including: a gastric tube body 100 and a pH probe 200 arranged on the gastric tube body 100. The gastric tube body 100 is used to be inserted into the patient's stomach. For the convenience of structural description, the end inserted into the patient's stomach is the distal end, and the end held by the medical staff is the proximal end. A probe accommodating cavity 120 is arranged at the distal end of the gastric tube body 100, and the pH probe 200 can be retractably arranged in the probe accommodating cavity 120. A detection die 220 is arranged on the pH probe 200. The detection die 220 is used to detect the pH value. The detection die 220 is electrically connected to the outside of the gastric tube body 100. For example, a detection circuit is arranged in the pH probe 200, and the detection circuit is connected by a cable (not shown in the figure), and the cable extends from the proximal end along the gastric tube body 100 in the wall of the gastric tube body 100 and is connected to an external monitoring host. In a specific structure of the gastric tube body 100, the gastric tube body 100 itself has a main tube 110, the main tube 110 has a main channel, and a branch tube 111 is additionally arranged outside the distal end of the main tube 110, and the probe accommodating cavity 120 is arranged in the branch tube 111, which does not affect the function of the main channel. In another structure, the branch tube 111 is arranged in the main channel, and the probe accommodating cavity 120 is arranged in the branch tube 111, which occupies a certain space of the distal opening of the main channel, and can also achieve the technical effect. When the pH value is detected after reaching the gastric mucosa, the detection die head 220 on the pH probe 200 is extended out of the distal end of the probe accommodating cavity 120, so as to detect the pH value of the gastric mucosa.

[0039] like Figure 4 , Figure 5 , Figure 6 As shown, the pH value monitoring device of this embodiment is provided with a probe accommodating cavity 120 on the stomach tube body 100, and a pH probe 200 is retractably arranged in the probe accommodating cavity 120. In the initial state, the pH probe 200 is accommodated in the probe accommodating cavity 120. Before the stomach tube body 100 is inserted into the patient's stomach and reaches the position of the gastric mucosa, the liquid in other parts cannot contact the detection die 220 of the pH probe 200 due to the obstruction of the probe accommodating cavity 120. After reaching the position of the gastric mucosa, the detection die 220 on the pH probe 200 is extended out of the probe accommodating cavity 120 to detect the pH value of the gastric mucosa. Therefore, in the process of the stomach tube body 100 extending into the patient's body, it will not contact the liquid in other parts, and the detection is performed only after reaching the gastric mucosa, thereby improving the detection accuracy and making the pH value detection at the gastric mucosa more accurate.

[0040] like Figure 3 , Figure 4As shown, further, in this embodiment, a telescopic assembly 300 is provided in the stomach tube body 100, and the telescopic assembly 300 is connected to the PH probe 200. The PH probe 200 moves along the probe accommodating cavity 120 through the action of the telescopic assembly 300. The PH probe 200 cooperates with the probe accommodating cavity 120 to seal the probe accommodating cavity 120, and the detection die 220 is extended or accommodated in the probe accommodating cavity 120 through the movement of the PH probe 200. The extension and retraction of the PH probe 200 are controlled by the telescopic assembly 300. After the PH probe 200 is retracted into the probe accommodating cavity 120, the sealing of the probe accommodating cavity 120 is achieved, so that the detection die 220 located in the probe accommodating cavity 120 does not contact the PH value of other parts, so as to detect and protect the detection die 220. After the stomach tube reaches the predetermined position, the PH probe 200 is extended by the telescopic assembly 300 to achieve accurate detection of the PH value of the current part.

[0041] like Figure 3 , Figure 4 , Figure 6 As shown, further, the telescopic assembly 300 in this embodiment specifically includes: an elastic member 310 and a pull wire 320. The elastic member 310 connects the probe accommodating cavity 120 and the PH probe 200, and the pull wire 320 connects the PH probe 200 and extends along the gastric tube body 100 to the outside of the patient. In the specific structure, a through hole is opened in the wall of the gastric tube body 100, and the pull wire 320 can be a flexible steel wire, and the pull wire 320 is passed through the through hole and can move in the through hole. The elastic member 310 is contracted by tightening the pull wire 320, and the detection die 220 is accommodated in the probe accommodating cavity 120; or, the elastic member 310 is released by loosening the pull wire 320, and the detection die 220 is pushed out of the probe accommodating cavity 120.

[0042] The distal end of the probe accommodating cavity 120 is an opening, and the proximal end is the cavity bottom. For the convenience of description, the direction from the cavity bottom to the opening is the in-and-out direction. The elastic member 310 can be a spring, the proximal end of the spring is connected to the cavity bottom, and the distal end extends toward the opening and is connected to the PH probe 200. The pull wire 320 is fixedly connected to the proximal end of the PH probe 200. The pull wire 320 can apply force on the outside of the gastric tube body 100 to pull the PH probe 200, so that the PH probe 200 compresses the spring when it moves toward the cavity bottom. When the detection die 220 on the PH probe 200 is accommodated in the probe accommodating cavity 120, it reaches the initial state. At this time, the position of the pull wire 320 can be locked. For example, a handle (not shown in the figure) is set at the proximal end of the gastric tube. The handle has a winding and unwinding function, and can be locked at any time during winding and unwinding, so that the winding process of the pull wire 320 can be locked at any time. The cooperation of the pull wire 320 and the elastic member 310 realizes the telescopic control function of the PH probe 200.

[0043] like Figure 4 , Figure 5 , Figure 6 As shown, further, the PH probe 200 in this embodiment also includes: a probe housing 210, which is movably arranged in the probe accommodating cavity 120, and a detection die 220 is arranged on the side of the probe housing 210. The detection circuit is arranged in the probe housing 210, and the cable is connected to the proximal end of the probe housing 210 and extends out of the probe housing 210. The cable is arranged in a spiral in the part of the probe accommodating cavity 120, so that the PH probe 200 can be smoothly retracted and released with the probe housing 210 during the contraction process, and because the distal end of the probe housing 210 is located in the sealing area of ​​the probe accommodating cavity 120, it is ensured that the internal detection circuit is not easily contacted by liquid to cause a short circuit. The detection die 220 is arranged on the side wall of the probe housing 210, so that the probe housing 210 can be sealed and matched with the orifice position of the probe accommodating cavity 120, so that the function of the detection die 220 entering and exiting the probe accommodating cavity 120 can be realized.

[0044] like Figure 4 , Figure 5 , Figure 6 As shown, further, in this embodiment, a sealing ring 130 is fixedly arranged in the opening of the probe accommodating cavity 120, and the sealing ring 130 is sleeved on the probe housing 210, and the probe housing 210 moves in the sealing ring 130. The sealing ring 130 can be integrally arranged with the probe accommodating cavity 120, and the probe housing 210 that moves from the sealing ring 130 is sealed due to the compression of the sealing ring 130 on its outer side wall, so that external liquid is not easy to enter the space inside the sealing ring 130 on the probe accommodating cavity 120, and a more stable sealing effect is achieved.

[0045] like Figure 4 , Figure 5 , Figure 6 As shown, the detection die 220 in this solution can be fixed on the side wall of the probe housing 210. When the probe housing 210 extends out of the probe accommodating cavity 120, the detection die 220 can also extend to the outside of the probe accommodating cavity 120 to achieve the detection function. However, the detection die 220 must basically be flush with the side wall of the probe housing 210, and the corresponding sealing ring 130 can be set as an O-shaped sealing structure to achieve effective sealing. The area of ​​the detection die 220 contacting the liquid at the gastric mucosa is limited, resulting in a low sensitivity of pH value detection. Therefore, the detection die 220 in this embodiment can be retractably arranged in the probe housing 210. The movable detection die 220 is contracted by the extrusion of the sealing ring 130 to enter and exit the probe accommodating cavity 120. When the detection die 220 extends out of the probe accommodating cavity 120, the detection die 220 can protrude to the outside of the outer wall of the probe housing 210, so that it can more conveniently contact the liquid at the detection site, making the pH value detection faster and improving the detection performance.

[0046] like Figure 4 , Figure 5 , Figure 6 As shown, in order to realize the extension and retraction of the detection die head 220, a mounting cavity 211 can be provided in the probe housing 210, and the detection die head 220 and the mounting cavity 211 are also sealed, so that the liquid is prevented from entering the inside of the probe housing 210 during the movement of the detection die head 220. A small second spring 222 is provided in the mounting cavity 211, which contracts when the detection die head 220 is squeezed so that the detection die head 220 can be squeezed into the mounting cavity 211, and the in-and-out function can be realized. When the detection die head 220 is pushed out to the outside of the sealing ring, the detection die head 220 can be smoothly pushed out by the second spring 222, so that the detection die head 220 can protrude from the outer wall of the probe housing 210, so that it is more convenient to contact the liquid in the part to be detected.

[0047] The detection working area of ​​the detection die 220 for contacting liquid to realize the detection function can be set at the end of the detection die 220 away from the probe housing 210. In the process of extending or retracting the probe housing 210 into the probe accommodating cavity 120, the detection working area of ​​the detection die 220 can be squeezed by the sealing ring 130 to scrape off the liquid thereon, thereby preventing residual liquid from entering the probe accommodating cavity 120, and ensuring that the surface of the detection die 220 is clean without additional liquid residue each time it is used.

[0048] In addition, the detection working area on the detection die 220 can also be set on the outer side of the detection die 220, for example, the detection working area is set on the surrounding sides of the detection die 220, and the detection die 220 is smoothly pushed out by the spring, so that the detection die 220 can protrude from the outer wall of the probe housing 210, so that it is more convenient to contact the liquid in the part to be detected. Moreover, when the PH probe 200 enters and exits the probe accommodating cavity 120 and passes the position of the sealing ring 130, the sealing ring 130 squeezes the end face of the detection die 220, and the side is subjected to less squeezing force, which can effectively protect the detection working area of ​​the detection die 220.

[0049] like Figure 5 As shown, further, the detection die head 220 in this embodiment is provided with arc chamfers 221 at both ends along the in-and-out direction. The structure of the arc chamfers 221 allows the detection die head 220 to be guided by the arc chamfers 221 when entering and exiting, so that the PH probe 200 can smoothly connect with the sealing ring 130 through the arc chamfers 221 during the movement, and then the detection die head 220 on the PH probe 200 passes through the sealing ring 130 more smoothly through the guiding effect of the arc chamfers 221. In the specific structure, the detection die head 220 adopts a structure with four sides, so the two sides in the in-and-out direction are set as arc surfaces, and the other two sides and / or the top surface are set as detection working areas.

[0050] like Figure 5 As shown, further, the sealing ring 130 in this embodiment is provided with guide fillets 131 at both ends along the in-and-out direction. Similarly, the proximal side and the distal side of the sealing ring 130 are both provided with guide fillets 131, which can cooperate with the arc chamfer 221 of the detection die head 220, so that the detection die head 220 on the PH probe 200 can pass through the sealing ring 130 more smoothly through the guiding effect.

[0051] like Figure 5 As shown, in order to achieve a more stable sealing effect and allow the detection die head 220 to pass through the sealing ring 130 more smoothly, this embodiment makes a special structural design for the sealing ring 130. The sealing ring 130 specifically includes: a guide boss 132 and a spring-loaded strip 133 connected to the guide boss 132. The guide boss 132 is annular and integrally formed on the inner wall of the probe accommodating cavity 120. The side of the guide boss 132 facing the outlet is the distal side, and the side away from the outlet is the proximal side. The spring-loaded strip 133 is integrally formed on the side of the guide boss 132 facing the central axis of the probe accommodating cavity 120. The spring-loaded strip 133 is arranged in the direction of entry and exit and extends a certain length toward the bottom of the probe accommodating cavity 120. A guide fillet 131 is set at the portion where the guide boss 132 and the spring strip 133 are connected, that is, the guide fillet 131 is formed on the distal side, and the thickness of the side of the guide boss 132 connected to the inner wall of the probe accommodating cavity 120 is large, and the thickness of the side facing the central axis is small. For example, the guide boss 132 can be set to a frustum shape, so that the larger thickness is combined with the guide fillet 131 on the distal side, so that in the process of guiding by the guide boss 132, it has a certain structural strength, which can support the smooth docking of the guide fillet 131 and the detection die 220, and then through the guiding effect of the guide fillet 131, the detection die 220 on the PH probe 200 can enter the probe accommodating cavity 120 and pass through the sealing ring 130 more smoothly. Similarly, a guide fillet 131 is provided on the proximal side of the spring strip 133, and the spring strip 133 is bent toward the side away from the central axis, so that when the detection die 220 on the PH probe 200 is extended out of the probe accommodating cavity 120, the guide fillet 131 on this side can smoothly connect with the detection die 220. Since there is no need to block the liquid on this side, the end of the spring strip 133 can be bent, and the deformation is more flexible, so that a more stable guidance is achieved after contacting the detection die.

[0052] like Figure 5As shown, in addition, in order to ensure the sealing performance of the detection die head 220 when passing through the sealing ring 130, a support ball 134 is also arranged between the guide boss 132 and the spring pressure strip 133. The support ball 134 itself can also be deformed. The support ball 134 is fixedly connected to the guide boss 132 and the spring pressure strip 133 respectively, and the support ball 134 is only arranged in the part of the sealing ring 130 corresponding to the line in the in and out direction of the detection die head 220. A deformation gap 135 is formed between the distal end of the support ball 134 and the wire boss and the spring pressure strip 133. The deformation gap 135 can make the guide boss 132 and the spring pressure strip 133 relatively easy to deform at this position, so that the detection die head 220 on the PH probe 200 can be smoothly docked in the process of entering the probe accommodating cavity 120. After the PH probe 200 is gradually moved and accommodated in the probe accommodating cavity 120, the detection die head 220 moves along the inner wall of the spring pressure strip 133 to reach the top position of the support ball 134. Since the support ball 134 has a certain supporting effect on the spring pressure strip 133, the pressure applied by the spring pressure strip 133 to the detection die head 220 is relatively large, which can squeeze out the residual liquid on the detection die head, which not only well ensures the extrusion sealing effect of the sealing ring 130 in the active position, but also avoids liquid residue on the detection die head 220, thereby ensuring the cleanliness of the detection die head 220.

[0053] Furthermore, in this embodiment, one or more detection die heads 220 may be provided.

[0054] When multiple detection die heads 220 are provided, the multiple detection die heads 220 are distributed along the axial direction or / and the circumferential direction of the pH probe 200. The pH values ​​at different positions in the region of the gastric mucosa can be detected by multiple detection die heads, and a comprehensive evaluation can be performed to achieve a more accurate pH detection effect. In a specific process, the multiple detection die heads 220 are electrically connected to the monitoring host, and the monitoring host detects multiple pH values ​​at different positions of the gastric mucosa through the multiple detection die heads 220 to determine the current pH value of the gastric mucosa. For example, the current pH value of the gastric mucosa is comprehensively evaluated and determined by taking the average value of multiple pH values.

[0055] In another scheme, a micro switch 212 is provided on the detection circuit, and the micro switch 212 can be provided in the installation cavity 211. The extension and contraction of the detection die 220 is sensed by the micro switch 212, and it is determined whether the detection die 220 is in the state of extending out of the probe accommodating cavity 120 or being accommodated in the inner side of the probe accommodating cavity 120 (for example, a touch state is preset, and the state is changed once when it is touched again). When it is detected that the PH probe 200 is in the process of extending out of the probe accommodating cavity 120, the PH value on the detection die 220 at this time is detected. If the PH value is neutral, then the PH value after the PH probe 200 extends out of the probe accommodating cavity 120 is detected again, and the PH value is used as the detection value for evaluation. If the PH value on the detection die 220 at this time is detected to be acidic or alkaline, then the PH value after the PH probe 200 extends out of the probe accommodating cavity 120 is corrected, and the corrected PH value is used as the detection value for evaluation, so that the detection result is more accurate.

[0056] In addition, when the micro switch 212 senses the extension and retraction of the detection die 220, a signal is sent to an external monitoring host. The monitoring host controls the detection die 220 to start detection and performs detection at a predetermined frequency. The frequency is set relatively fast, so it is possible to timely evaluate whether the liquid residue in the detection die 220 is cleaned up during the process of passing through the sealing ring 130.

[0057] In summary, the present application provides a gastric mucosal pH monitoring device, which is provided with a probe accommodating cavity on the gastric tube body, and a pH probe is retractably arranged in the probe accommodating cavity. In the initial state, the pH probe is accommodated in the probe accommodating cavity. Before the gastric tube body is inserted into the patient's stomach and reaches the position of the gastric mucosa, the liquid in other parts cannot contact the detection die of the pH probe due to the obstruction of the probe accommodating cavity. After reaching the position of the gastric mucosa, the detection die on the pH probe is extended out of the probe accommodating cavity to detect the pH value of the gastric mucosa. Therefore, in the process of the gastric tube body extending into the patient's body, it will not contact the liquid in other parts, and the detection will be performed after reaching the gastric mucosa, thereby improving the detection accuracy and making the pH value detection at the gastric mucosa more accurate.

[0058] The above description is only a preferred embodiment of the present application and is not intended to limit the present application. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present application should be included in the protection scope of the present application.

Claims

1. A gastric mucosal pH monitoring device, characterized in that: include: A stomach tube body, wherein the stomach tube body has a probe accommodating cavity, a PH probe is retractably arranged in the probe accommodating cavity, and a detection die is arranged on the PH probe; The gastric tube body is used to be inserted into the stomach of a patient, and the detection die head on the pH probe is extended out of the probe accommodating cavity to detect the pH value of the gastric mucosa.

2. The gastric mucosal pH monitoring device according to claim 1, characterized in that: A telescopic component is disposed in the stomach tube body, the telescopic component is connected to the PH probe, and the PH probe moves along the probe accommodating cavity through the action of the telescopic component; The PH probe cooperates with the probe accommodating cavity to seal the probe accommodating cavity, and the detection die head is extended out or accommodated in the probe accommodating cavity through the movement of the PH probe.

3. The gastric mucosal pH monitoring device according to claim 2, characterized in that: The telescopic assembly includes: an elastic member, the elastic member connecting the probe accommodating cavity and the PH probe; A pull line, the pull line is connected to the pH probe and extends along the gastric tube body to the outside of the patient; The elastic member is contracted by tightening the pull wire, so that the detection die head is accommodated in the probe accommodating cavity; Alternatively, the elastic member is released by loosening the pull wire, and the detection die head is pushed out of the probe accommodating cavity.

4. The gastric mucosal pH monitoring device according to claim 1, characterized in that: The PH probe comprises a probe housing, and the probe housing is movably disposed in the probe accommodating cavity; The detection die head is arranged on the side of the probe housing.

5. The gastric mucosal pH monitoring device according to claim 4, characterized in that: A sealing ring is fixedly arranged in the opening of the probe accommodating cavity. The sealing ring is sleeved on the probe housing, and the probe housing moves in the sealing ring.

6. The gastric mucosal pH monitoring device according to claim 5, characterized in that: The detection die head is retractably arranged in the probe housing; The movable detection die head is contracted by the squeezing of the sealing ring to enter and exit the probe accommodating cavity.

7. The gastric mucosal pH monitoring device according to claim 6, characterized in that: The two ends of the detection die head along the inlet and outlet directions are provided with arc chamfers.

8. The gastric mucosal pH monitoring device according to claim 7, characterized in that: The sealing ring is provided with guide fillets at both ends along the inlet and outlet directions.

9. The gastric mucosal pH monitoring device according to any one of claims 1 to 7, characterized in that: The detection die heads are provided in plurality, and the plurality of detection die heads are distributed along the axial direction and / or the circumferential direction of the PH probe.

10. The gastric mucosal pH monitoring device according to claim 9, characterized in that: A plurality of the detection dies are electrically connected to a monitoring host; The monitoring host detects multiple pH values ​​at different positions of the gastric mucosa through multiple detection dies to determine the current pH value of the gastric mucosa.

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