Intra-abdominal pressure monitoring device and monitoring method

Abstract

The present invention discloses an intra-abdominal pressure monitoring device and a monitoring method thereof, comprising a puncture unit and a fixing unit, the puncture unit comprising a probe and a connecting tube, the probe being arranged at the end of the connecting tube; the fixing unit being arranged at the side of the connecting tube close to the probe, the fixing unit being coaxially matched with the connecting tube, the fixing unit comprising an expansion arm, a limiting ring and an extrusion sleeve, the expansion arm being hingedly connected to the limiting ring, the limiting ring being symmetrically arranged on both sides of the extrusion sleeve, the limiting ring being hingedly connected to the extrusion sleeve, and the beneficial effects of the present invention are as follows: the probe is passed through the drainage tube indwelling on the patient and enters the patient's abdominal cavity, firstly, secondary puncture injury is avoided and the patient's pain is reduced, and secondly, when the probe reaches the designated position, the fixing unit is used to fix the probe, thereby improving the monitoring accuracy and avoiding the error caused by unstable fixation of the probe, so that the medical staff can grasp the patient's condition more accurately and improve the doctor's treatment efficiency.

Description

Technical Field

[0001] The present invention relates to the technical field of intra-abdominal pressure monitoring, in particular to an intra-abdominal pressure monitoring device and a monitoring method thereof. Background Art

[0002] Intra-abdominal pressure, also known as intra-abdominal pressure, is one of the important physiological parameters for clinical diagnosis and treatment of diseases. There are two methods for measuring intra-abdominal pressure: direct measurement and indirect measurement. The direct measurement method is to measure the pressure by connecting a sensor to an abdominal drainage tube or puncture needle, and the measurement value is accurate. Of course, this method is an invasive operation, and most patients have complex abdominal conditions, so it is rarely used clinically. The indirect measurement method directly reflects the abdominal pressure by measuring the pressure of the abdominal organs. Among them, the intra-bladder pressure can objectively reflect the intra-abdominal pressure, which is convenient for the diagnosis of abdominal compartment syndrome, and can also evaluate the impact of increased intra-abdominal pressure on circulation, respiration and renal function. It has the advantages of simple technical operation and low trauma, and is currently recognized as the gold standard for indirect measurement and determination of intra-abdominal pressure.

[0003] When testing the intra-abdominal pressure, sometimes it is necessary to conduct uninterrupted testing for 24 hours. Most of the instruments required for the test are placed next to the bed and cannot be adjusted and fixed well. They are not very convenient to use, especially in an environment with too many medical devices in the intensive care unit. Summary of the invention

[0004] In view of the inconvenience in monitoring the intra-abdominal pressure of patients mentioned above or in the prior art, the present invention is proposed.

[0005] Therefore, an object of the present invention is to provide an intra-abdominal pressure monitoring device, comprising.

[0006] To solve the above technical problems, the present invention provides the following technical solutions: an intra-abdominal pressure monitoring device, comprising a puncture unit, the puncture unit comprising a probe and a connecting tube, the probe being arranged at the end of the connecting tube; and a fixing unit, the fixing unit being arranged at the side of the connecting tube close to the probe, the fixing unit being concentrically matched with the connecting tube, the fixing unit comprising an expansion arm, a limiting ring and an extrusion sleeve, the expansion arm being hingedly connected to the limiting ring, the limiting ring being symmetrically arranged on both sides of the extrusion sleeve, and the limiting ring being hingedly connected to the extrusion sleeve.

[0007] As a preferred solution of the intra-abdominal pressure monitoring device of the present invention, the probe is a silicon piezoresistive pressure sensor.

[0008] As a preferred embodiment of the intra-abdominal pressure monitoring device described in the present invention, the expansion arm includes a hinge, an elastic member and a bite ring, the two expansion arms are arranged in a V-shape, the junction of the two expansion arms is a hinge, the elastic member is arranged between the two expansion arms, the bite ring is respectively arranged at both ends of the two expansion arms, and the side of the bite ring is provided with bite teeth.

[0009] As a preferred solution of the intra-abdominal pressure monitoring device described in the present invention, wherein: the limiting ring includes a matching plate, an arc plate and a gap groove, the matching plate is arranged on the side of the limiting ring, the arc plate is arranged in the middle of the matching plate, the gap groove is arranged in alignment with the arc plate, the arc plate includes a friction portion arranged at its end, and the gap groove includes connecting rings symmetrically arranged on both sides thereof.

[0010] As a preferred solution of the intra-abdominal pressure monitoring device of the present invention, the two ends of the limiting ring are respectively hinged to the extrusion sleeve and the expansion arm, and the expansion arm, the limiting ring and the extrusion sleeve are connected to form a pentagon.

[0011] As a preferred embodiment of the intra-abdominal pressure monitoring device described in the present invention, the extrusion sleeve includes a hollow groove, an insertion rod and an arc-shaped cavity, the hollow groove is symmetrically arranged on both sides of the extrusion sleeve, the insertion rod is arranged in alignment with the hollow groove, and the arc-shaped cavity is symmetrically arranged on both sides of the extrusion sleeve.

[0012] As a preferred embodiment of the monitoring method for the intra-abdominal pressure monitoring device described in the present invention, the probe is calibrated and passed through the fixing unit; the fixing unit is slid into the end of the connecting tube close to the probe; the probe is inserted into the abdominal cavity along the abdominal drainage tube; when the probe reaches the designated position, the expansion arm is released so that the fixing unit is engaged and fixed with the connecting tube; the intra-abdominal pressure is monitored; after the monitoring is completed, the expansion arm is held by hand to reduce its angle, and the probe is pulled out.

[0013] As a preferred embodiment of the monitoring method for the intra-abdominal pressure monitoring device of the present invention, the probe is calibrated by placing the probe in a standard pressure source of known pressure, and adjusting the zero point and range of the sensor according to the calibration procedure.

[0014] As a preferred embodiment of the monitoring method for the intra-abdominal pressure monitoring device described in the present invention, inserting the probe into the abdominal cavity along the abdominal drainage tube is to open the interface of the drainage tube, and slowly insert the probe into the abdominal cavity along the inner cavity of the drainage tube to reach a suitable position.

[0015] As a preferred embodiment of the monitoring method for the intra-abdominal pressure monitoring device of the present invention, the intra-abdominal pressure is monitored with a data collection frequency of twice per minute for patients with stable conditions and five times per minute for patients with critical conditions.

[0016] The beneficial effects of the present invention are as follows: the present invention allows the probe to pass through the drainage tube indwelling the patient and enter the patient's abdominal cavity through a connecting tube, thereby firstly avoiding secondary puncture injury and reducing the patient's pain; secondly, when the probe reaches the designated position, the probe is fixed by a fixing unit, thereby improving the accuracy of monitoring and avoiding errors caused by unstable fixation of the probe, enabling medical staff to have a more accurate grasp of the patient's condition and improving the doctor's treatment efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other accompanying drawings can be obtained based on these accompanying drawings without paying creative labor.

[0018] Figure 1 It is the overall structure diagram of the intra-abdominal pressure monitoring device.

[0019] Figure 2 This is a structural diagram of a fixing device for an intra-abdominal pressure monitoring device.

[0020] Figure 3 This is an expanded view of the fixing device of the intra-abdominal pressure monitoring device.

[0021] Figure 4 A side view of the fixation device for the intra-abdominal pressure monitoring device.

[0022] Figure 5 This is an oblique view of the fixing device of the intra-abdominal pressure monitoring device.

[0023] Figure 6 The present invention is a flow chart of a monitoring method of an intra-abdominal pressure monitoring device.

[0024] Reference numerals:

[0025] 100, puncture unit; 101, probe; 102, connecting tube; 200, fixing unit; 201, expansion arm; 202, limiting ring; 203, extrusion sleeve; 201a, hinge; 201b, elastic member; 201c, bite ring; 201c-1, bite teeth; 202a, matching plate; 202b, arc plate; 202c, gap groove; 202b-1, friction part; 202c-1, connecting ring; 203a, hollow groove; 203b, insertion rod; 203c, arc cavity. DETAILED DESCRIPTION

[0026] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific implementation methods of the present invention are described in detail below in conjunction with the accompanying drawings.

[0027] In the following description, many specific details are set forth to facilitate a full understanding of the present invention, but the present invention may also be implemented in other ways different from those described herein, and those skilled in the art may make similar generalizations without violating the connotation of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0028] Secondly, the term "one embodiment" or "embodiment" as used herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation of the present invention. The term "in one embodiment" that appears in different places in this specification does not necessarily refer to the same embodiment, nor does it refer to a separate or selective embodiment that is mutually exclusive with other embodiments.

[0029] Example 1, reference Figure 1 to Figure 3 , which is the first embodiment of the present invention, provides an intra-abdominal pressure monitoring device, which includes a puncture unit 100 and a fixing unit 200. The puncture unit 100 penetrates the patient's abdominal cavity by using a drainage tube left on the patient to allow the probe 101 to perform detection. The fixing unit 200 fixes the connecting tube 102 and the probe 101 after the puncture action is completed, so that the monitoring result is true and reliable.

[0030] Specifically, the puncture unit 100 includes a probe 101 and a connecting tube 102, and the probe 101 is arranged at the end of the connecting tube 102; the fixing unit 200 is arranged on the side of the connecting tube 102 close to the probe 101, and the fixing unit 200 is concentrically matched with the connecting tube 102. The fixing unit 200 includes an expansion arm 201, a limiting ring 202 and an extrusion sleeve 203, the expansion arm 201 is hingedly connected to the limiting ring 202, the limiting ring 202 is symmetrically arranged on both sides of the extrusion sleeve 203, and the limiting ring 202 is hingedly connected to the extrusion sleeve 203.

[0031] When in use, first insert the fixing unit 200 into the connecting tube 102, and then puncture the probe into the patient's abdominal cavity through the drainage tube. When the probe 101 reaches the designated position, release the hand holding the expansion arm 201. Under the action of elasticity, the expansion arm 201 is turned outward, pushing the limiting ring 202 to deflect. At this time, the extrusion sleeve 203 and the limiting rings 202 on both sides thereof form an arc path, so that the connecting tube 102 is bent. The connecting tube 102 in the bent state is fixed to the fixing unit 200 and does not move relative to each other. The wall of the drainage tube is between the fixing unit 200 and the connecting tube 102. When the extrusion effect occurs, friction is generated between the fixing unit 200 and the drainage tube and the connecting tube 102, so that the connecting tube 102 is fixed, and the probe 101 is located at the designated position without moving.

[0032] Example 2, reference Figure 2-Figure 5, which is the second embodiment of the present invention, and is different from the first embodiment in that: the expansion arm 201 includes a hinge 201a, an elastic member 201b and a bite ring 201c, the two expansion arms 201 are arranged in a V shape, the junction of the two expansion arms 201 is the hinge 201a, the elastic member 201b is arranged between the two expansion arms 201, the bite ring 201c is respectively arranged at both ends of the two expansion arms 201, and the side of the bite ring 201c is provided with a bite tooth 201c-1.

[0033] Furthermore, the limiting ring 202 includes a matching plate 202a, an arc plate 202b and a gap groove 202c, the matching plate 202a is arranged on the side of the limiting ring 202, the arc plate 202b is arranged in the middle of the matching plate 202a, the gap groove 202c is arranged in alignment with the arc plate 202b, the arc plate 202b includes a friction portion 202b-1 arranged at its end, and the gap groove 202c includes connecting rings 202c-1 symmetrically arranged on both sides thereof.

[0034] Preferably, the two ends of the limiting ring 202 are respectively hinged to the extrusion sleeve 203 and the expansion arm 201, and the expansion arm 201, the limiting ring 202 and the extrusion sleeve 203 are connected to form a pentagon.

[0035] Preferably, the extrusion sleeve 203 includes a hollow groove 203a, an insertion rod 203b and an arc-shaped cavity 203c, the hollow groove 203a is symmetrically arranged on both sides of the extrusion sleeve 203, the insertion rod 203b is arranged in alignment with the hollow groove 203a, and the arc-shaped cavity 203c is symmetrically arranged on both sides of the extrusion sleeve 203.

[0036] On the basis of the previous embodiment, the wall of the drainage tube is between the fixing unit 200 and the connecting tube 102. When the squeezing effect occurs, friction is generated between the fixing unit 200 and the drainage tube and the connecting tube 102, so that the connecting tube 102 is fixed, thereby keeping the probe 101 at the designated position without movement.

[0037] When in use, the hinge 201a provides an articulated connection for the expansion arm 201, so that one section of the expansion arm 201 moves away from each other. When the expansion arm 201 is opened, the end of the limiting ring 202 that is not hinged to the extrusion sleeve 203 makes a circular motion. At this time, the circular axis in the middle of the limiting ring 202 is deflected and combined with the axis of the extrusion sleeve 203 to form a rear arc path, so that the connecting tube 102 does not move.

[0038] Furthermore, the arc plate 202b at the end of the matching plate 202a deflects and penetrates into the arc cavity 203c on the side of the extrusion sleeve 203, so that the friction part 202b-1 contacts the wall of the drainage tube to increase the friction effect, further ensuring that the connecting tube 102 does not move relative to the drainage tube.

[0039] Preferably, the friction portion 202b-1 extends into the extrusion sleeve 203 and also produces an extrusion effect on the tube wall of the drainage tube. The extrusion effect reduces the space inside the extrusion sleeve 203 and increases the contact surface. At this time, the connection between the extrusion sleeve 203 and the drainage tube is more stable.

[0040] Furthermore, the engaging teeth 201c-1 contact the drainage tube walls on both sides to further limit the fixing unit 200. At this time, the shapes of the connecting tube 102 and the drainage tube are as follows: Figure 3 The dotted line hose indicates that, supported by the elastic member 201 b , the fixing unit 200 is tightly attached to the drainage tube and the connecting tube 102 .

[0041] Example 3, reference Figure 1 to Figure 6 , which is the third embodiment of the present invention, based on the previous two embodiments: it also includes a monitoring method of an intra-abdominal pressure monitoring device.

[0042] The probe 101 is calibrated and passed through the fixing unit 200;

[0043] Slide the fixing unit 200 into the end of the connecting tube 102 close to the probe 101;

[0044] Insert the probe 101 into the abdominal cavity along the abdominal drainage tube;

[0045] When the probe 101 reaches the designated position, the expansion arm 201 is released, so that the fixing unit 200 is engaged and fixed with the connecting tube 102;

[0046] Monitor intra-abdominal pressure;

[0047] After the monitoring is completed, hold the expansion arm 201 by hand to reduce its angle and pull out the probe.

[0048] Furthermore, the probe 101 is calibrated by placing the probe 101 in a standard pressure source of known pressure, and adjusting the zero point and the range of the sensor according to a calibration procedure.

[0049] Specifically, the probe 101 is inserted into the abdominal cavity along the abdominal drainage tube to open the interface of the drainage tube, and the probe 101 is slowly inserted into the abdominal cavity along the inner cavity of the drainage tube to reach a suitable position.

[0050] In combination with the previous two embodiments, the intra-abdominal pressure is monitored at a data collection frequency of twice per minute for patients with stable conditions; and five times per minute for patients with critical conditions.

[0051] In this embodiment, the probe 101 is a silicon piezoresistive pressure sensor.

[0052] When in use, it is first necessary to notify the patient in advance and calibrate the pressure sensor in order to maintain the sensitivity and accuracy of the pressure sensor, and then open the indwelling catheter interface, place the probe 101 along the inner cavity, release the fixing unit 200 after it is in place, use the MCU to receive data, first perform temperature compensation, then filter, store and display the data.

[0053] After the probe is inserted, continuous monitoring is performed and the data is transmitted to the bedside or hospital system for remote viewing by medical staff.

[0054] The threshold setting for the patient's intra-abdominal pressure alarm is: when the intra-abdominal pressure exceeds 15 mmHg, it is a level one alarm; when it exceeds 20 mmHg, it is a level two alarm. Monitoring equipment is used to prompt medical staff.

[0055] At the end of monitoring, the percutaneous puncture is pulled out under ultrasound guidance and compression is applied to stop bleeding; for catheter insertion, the probe is removed first and then the interface is closed according to routine care. After each use, it is cleaned and disinfected, the probe is sterilized, the main unit casing is wiped with alcohol, and the electricity is checked.

[0056] To sum up, the present invention uses a connecting tube to allow the probe to pass through the drainage tube left on the patient and enter the patient's abdominal cavity. Firstly, secondary puncture injuries are avoided and the patient's pain is reduced. Secondly, when the probe reaches the specified position, the probe is fixed by a fixing unit, which improves the accuracy of monitoring and avoids errors caused by unstable probe fixation. This enables medical staff to grasp the patient's condition more accurately and improves the doctor's treatment efficiency.

[0057] 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 without departing from the spirit and scope of the technical solutions of the present invention, which should all be included in the scope of the claims of the present invention.

Claims

1. An intra-abdominal pressure monitoring device, characterized in that: include, A puncture unit (100), the puncture unit (100) comprising a probe (101) and a connecting tube (102), the probe (101) being arranged at the end of the connecting tube (102); and, A fixing unit (200), wherein the fixing unit (200) is arranged on the side of the connecting tube (102) close to the probe (101), the fixing unit (200) and the connecting tube (102) are coaxially matched, the fixing unit (200) comprises an expansion arm (201), a limiting ring (202) and an extrusion sleeve (203), the expansion arm (201) and the limiting ring (202) are hingedly connected, the limiting ring (202) is symmetrically arranged on both sides of the extrusion sleeve (203), and the limiting ring (202) and the extrusion sleeve (203) are hingedly connected.

2. The intra-abdominal pressure monitoring device according to claim 1, characterized in that: The probe (101) is a silicon piezoresistive pressure sensor.

3. The intra-abdominal pressure monitoring device according to claim 2, characterized in that: The expansion arm (201) comprises a hinge (201a), an elastic member (201b) and a bite ring (201c); the two expansion arms (201) are arranged in a V-shape; the junction of the two expansion arms (201) is the hinge (201a); the elastic member (201b) is arranged between the two expansion arms (201); the bite ring (201c) is respectively arranged at two ends of the two expansion arms (201); and bite teeth (201c-1) are arranged on the side of the bite ring (201c).

4. The intra-abdominal pressure monitoring device according to claim 3, characterized in that: The limiting ring (202) comprises a matching plate (202a), an arc plate (202b) and a clearance groove (202c); the matching plate (202a) is arranged on the side of the limiting ring (202); the arc plate (202b) is arranged in the middle of the matching plate (202a); the clearance groove (202c) and the arc plate (202b) are arranged in alignment; the arc plate (202b) comprises a friction portion (202b-1) arranged at its end; and the clearance groove (202c) comprises connecting rings (202c-1) symmetrically arranged on both sides thereof.

5. The intra-abdominal pressure monitoring device according to claim 4, characterized in that: The two ends of the limiting ring (202) are respectively hinged to the extrusion sleeve (203) and the expansion arm (201); the expansion arm (201), the limiting ring (202) and the extrusion sleeve (203) are connected to form a pentagon.

6. The intra-abdominal pressure monitoring device according to claim 5, characterized in that: The extrusion sleeve (203) comprises a hollow groove (203a), an insertion rod (203b) and an arc-shaped cavity (203c); the hollow groove (203a) is symmetrically arranged on both sides of the extrusion sleeve (203); the insertion rod (203b) is arranged in alignment with the hollow groove (203a); and the arc-shaped cavity (203c) is symmetrically arranged on both sides of the extrusion sleeve (203).

7. A monitoring method for an intra-abdominal pressure monitoring device, characterized in that: An intra-abdominal pressure monitoring device according to any one of claims 1 to 6, characterized in that: Calibrate the probe (101) and pass it through the fixing unit (200); Slide the fixing unit (200) into the end of the connecting tube (102) close to the probe (101); Inserting the probe (101) into the abdominal cavity along the abdominal drainage tube; When the probe (101) reaches the designated position, the expansion arm (201) is released, so that the fixing unit (200) and the connecting tube (102) are engaged and fixed; Monitor intra-abdominal pressure; After the monitoring is completed, the expansion arm (201) is held by hand to reduce its angle, and the probe is pulled out.

8. The monitoring method for the intra-abdominal pressure monitoring device according to claim 7, characterized in that: The calibration of the probe (101) is performed by placing the probe (101) in a standard pressure source of known pressure, and adjusting the zero point and the range of the sensor according to a calibration procedure.

9. The monitoring method for the intra-abdominal pressure monitoring device according to claim 8, characterized in that: The step of inserting the probe (101) into the abdominal cavity along the abdominal drainage tube is to open the interface of the drainage tube, and slowly insert the probe (101) into the abdominal cavity along the inner cavity of the drainage tube to reach a suitable position.

10. The monitoring method for the intra-abdominal pressure monitoring device according to claim 9, characterized in that: The intra-abdominal pressure monitoring is performed with a data collection frequency of twice per minute for patients with stable conditions and five times per minute for patients with critical conditions.

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