Detection box and detection system for detecting liquid flow in medical flow guiding device

Abstract

The invention discloses a detection box and a detection system for detecting liquid flow in a medical flow guiding device, the detection box comprises a top cover and a main body part which are connected through a pivoting mechanism, and the joint surfaces of the top cover and the main body part are respectively provided with a local concave shape. When the two parts are closed, a channel suitable for holding the catheter and a hollow space suitable for containing and fixing the fluid sensing device are formed. Wherein the top cover further comprises a top cover shell and a locking mechanism with an operating element, and the locking mechanism is configured to be capable of locking the top cover relative to the main body part when the top cover is in the closed position and can only be unlocked by pushing the operating element in the preset direction so as to open the top cover. According to the invention, the reliability and robustness of liquid flow detection in a complex clinical medical environment can be improved, and the operation required for executing the detection becomes more convenient and efficient.

Description

Technical Field

[0001] The present disclosure relates to the field of medical technology, and particularly to the detection of the flow of liquids (such as human body fluids) in a diversion device in clinical medicine, and more particularly to a detection cartridge for detecting the liquid flow in a medical diversion device and a detection system. Background Art

[0002] In clinical medicine, various liquid diversion devices are widely used, such as some devices that guide the flow of a patient's body fluids or discharge from the body itself. For example, a typical such diversion device is a urinary catheterization device, which generally includes a urine drainage tube and a urine collection bag. The two ends of the urine drainage tube (which can be referred to as the patient end and the collection end) are respectively connected to the indwelling urinary catheter of the patient and the urine collection bag.

[0003] One major requirement in the clinical use of such devices is that parameters such as the flow rate and flow volume of the liquid flow in these diversion devices often have important reference values for the patient's condition, treatment, and determination of medical treatment plans. Therefore, it is necessary to detect these liquid flow parameters in order to monitor, record, observe, and analyze relevant data based on this detection.

[0004] However, in the relatively complex clinical environment of a hospital, the existing technologies cannot provide a satisfactory solution that can accurately and reliably detect such liquid flow parameters while avoiding causing inconvenience or bringing additional risks to patients, doctors, and nurses.

[0005] For example, most of the currently known solutions use a weighing method to detect the liquid flow in the diversion device. However, the disadvantages of such solutions include the following aspects: The detection device based on weight measurement can only be attached near the container at the liquid collection end of the diversion device, such as at the urine collection bag, and the detection device and the liquid-containing container need to maintain a relatively fixed position and avoid contact with other surrounding devices in order to meet the need for accurate weight measurement; during the operation of the detection device, if a nearby patient or medical staff touches or moves the detection device or the liquid container, it will affect the detection data; when replacing the urine collection bag, for example, it is necessary to manually record the data; the real-time performance of the detected data is poor, and usually only the cumulative value within a certain long period of time can be obtained; before each arrangement of the detection device for detection, the preparation operation of installing the detection device in place is relatively cumbersome and inconvenient.

[0006] In addition, existing detection devices may also have the following disadvantages: the operation is inconvenient due to the presence of connecting wires, which hinders the movement of patients, etc.; the volume of some detection devices themselves is relatively large, further occupying the limited clinical space; some detection devices have relatively high requirements for static fixation of their own positions, so they need to be additionally fixed to the components of the hospital bed through a bracket to complete more accurate detection; the detection accuracy is low, and so on.

[0007] Therefore, there is an urgent need to provide a new detection device for detecting the liquid flow in a medical diversion device to at least partially alleviate or solve the above problems and defects existing in the existing solutions. Summary of the Invention

[0008] An object of the present disclosure is to propose a detection box for detecting the liquid flow in a medical diversion device and a detection system including the detection box in order to overcome at least a part of the above-mentioned various defects existing in the existing solutions or detection devices for detecting the liquid flow in a medical diversion device.

[0009] The present disclosure provides a detection box for detecting the liquid flow in a medical diversion device, wherein the diversion device has a catheter through which the liquid flows. The detection box is characterized in that a fluid sensing device is arranged in the catheter, and the fluid sensing device is configured to be able to sense the liquid flow in the catheter and generate a corresponding electrical signal based on the liquid flow;

[0010] The detection box includes a top cover and a main body part connected via a pivoting mechanism, and the pivoting mechanism is configured to be able to allow the top cover to pivot relative to the main body part about a pivot axis between a closed position and an open position;

[0011] The top cover and the main body part respectively include joint surfaces having a partially recessed shape, and the partially recessed shape includes a groove extending transversely through the joint surface and a recess communicating with the groove. When the top cover is in the closed position, the grooves of the two together form a channel suitable for holding the catheter, and the recesses of the two together form a hollow space for accommodating and fixing the fluid sensing device;

[0012] Moreover, the main body part further includes a receiving circuit, and the receiving circuit has electrical contacts that can be electrically connected to the fluid sensing device fixed in the hollow space for obtaining the electrical signal from the fluid sensing device;

[0013] The top cover further includes a top cover housing and a locking mechanism with an operating element, the operating element being disposed at a distal portion of the top cover housing opposite to the pivot shaft and an outer surface of the operating element being substantially flush with the distal portion of the top cover housing. The locking mechanism is configured to be able to lock the top cover relative to the main body portion when the top cover is in the closed position, and can only be unlocked to open the top cover by pushing the operating element in a predetermined direction. Wherein, the predetermined direction is perpendicular to the extending direction of the pivot shaft and extends substantially along the outer surface of the distal portion of the top cover housing.

[0014] The test cartridge according to the present disclosure mainly consists of a top cover and a main body portion connected via a pivoting mechanism, which avoids the risk of a part of the components of the test cartridge becoming detached or lost in a relatively crowded environment such as a hospital ward. Moreover, this design of the top cover and its locking mechanism of the test cartridge enables the operating element of the locking mechanism to extend substantially along the outer surface of the distal portion of the top cover housing in any state, which in turn maximally avoids the risk that people such as patients, doctors, and nurses accidentally touch the operating element and actuates it to cause the test cartridge to be accidentally opened during operation. This characteristic is very beneficial and user-friendly for the use environment of a hospital ward, because it means that the test cartridge itself can be ignored during the operation of the test cartridge (for example, monitoring the fluid flow rate of a patient or the flow rate of a physiological fluid delivered to a patient).

[0015] According to an embodiment of the present disclosure, the main body portion further includes a plate-shaped protrusion, the plate-shaped protrusion protruding upward from the joint surface of the main body portion at a distal end opposite to the pivot shaft and forming a part of the distal end surface of the main body portion for attaching a display screen;

[0016] The top cover further includes a plate-shaped recess, the plate-shaped recess and the plate-shaped protrusion having complementary shapes and having two adjacent surfaces substantially perpendicular to the joint surface.

[0017] According to an embodiment of the present disclosure, the top cover housing has an upwardly convex arc-shaped top surface, the arc-shaped top surface having a notch at a distal end opposite to the pivot shaft, and the shape of the notch being adapted to the shape of the plate-shaped protrusion.

[0018] According to an embodiment of the present disclosure, the operating element is disposed at an edge portion of the top cover housing adjacent to the notch, the edge portion having an upward inclination angle with respect to the joint surface, the inclination angle being between 15 degrees and 60 degrees. Preferably, the inclination angle is between 20 degrees and 40 degrees.

[0019] One advantage of the test kit according to this embodiment is that this design of the edge portion of the top cover housing allows the direction in which the operator pushes the operating element (such as a slider) to unlock to naturally provide a sufficient component force in the direction of opening the top cover (such as upward) such that the top cover is opened along with the unlocking operation. Thus, a process with a very high success rate is provided, and the unlocking and opening of the top cover can be basically completed simultaneously by a single action of the operator. Also, compared with the position of the unlocking element provided on the top surface or the front surface of the test kit, the risk of accidental touch of this design is significantly smaller.

[0020] In other words, this design allows for a very simple and quick operation of opening / closing the top cover. To open the top cover, it is basically only necessary to (for example, with the thumb in the state of holding the test kit) push the operating element in a predetermined direction to unlock and, by means of the component force of this pushing operation, push the top cover open, which means that the user actions required for the operation process of unlocking and opening the top cover are simple and coherent, and there is hardly any inconvenience or jamming in operation. For the operation of closing the top cover, the user only needs to close the top cover in any way.

[0021] According to an embodiment of the present disclosure, the locking mechanism further includes:

[0022] A stop portion that protrudes from an adjacent surface of the plate-shaped protruding portion;

[0023] A latch portion that is provided on the plate-shaped recessed portion and is connected to the operating element, so that it can move from a locked position to an unlocked position along with the movement of the operating element in the predetermined direction. Wherein, in the locked position, the latch portion protrudes beyond the adjacent surface of the plate-shaped recessed portion to reach a first protruding height, and in the unlocked position, the latch portion does not protrude beyond the adjacent surface of the plate-shaped recessed portion.

[0024] Optionally, the locking mechanism is further designed such that when the top cover is in the closed position, the gap between the two adjacent surfaces does not exceed 3 millimeters, and the first protruding height is between 0.5 millimeter and 2 millimeters.

[0025] This design ensures that the top cover can be locked in the closed position very securely, and the operating stroke required for unlocking is very short, making it more convenient for the user to complete the unlocking operation with a finger in the state of holding the test kit. In addition, this design of the locking mechanism also allows the user to close the top cover in any way (i.e., the closed or enclosed position of the top cover relative to the main body portion), and both the latch portion and the stop portion are engaged to prevent the top cover from being opened.

[0026] According to an embodiment of the present disclosure, relative to the centerline parallel to the pivot axis of the joint surface, the groove (i.e., the channel adapted to hold the catheter) is offset by a first offset distance. More specifically, the groove divides the joint surface of the top cover into a first flat surface portion adjacent to the plate-shaped protrusion in the closed position and a second flat surface portion adjacent to the pivot axis, and the size of the second flat surface portion is between 1.3 times and 3 times, and preferably between 1.5 times and 2.5 times, the size of the first flat surface portion.

[0027] This embodiment provides an asymmetric design in which the channel adapted to hold the catheter is not centered relative to the joint surface, such that it is impossible to accidentally place the fluid sensing device together with the catheter backwards into the test cartridge.

[0028] According to an embodiment of the present disclosure, relative to the centerline parallel to the pivot axis of the recess, the groove is offset by a second offset distance, wherein the offset direction of the second offset distance is the same as that of the first offset distance.

[0029] The present disclosure also provides a detection system for detecting liquid flow in a medical diversion device, which includes a test cartridge having some or all of the multi-faceted features described above and a fluid sensing device disposed in or connected to the catheter, and when performing detection, the test cartridge and the fluid sensing device are attached to each other as described above.

[0030] Based on common general knowledge in the art, the above preferred conditions can be combined arbitrarily to obtain various preferred examples of the present disclosure.

[0031] The positive and progressive effects of the present disclosure are as follows:

[0032] The test cartridge for detecting liquid flow in a medical diversion device according to the present disclosure and the detection system including the test cartridge help to improve the reliability and robustness of the detection of liquid flow in the complex environment of clinical medicine, and make the operations required for performing such detections more convenient and efficient. Moreover, the risk of component detachment or loss of the test cartridge itself is reduced, and the risk of misoperation and accidental actuation related to the test cartridge switch is also reduced or even avoided. Brief Description of the Drawings

[0033] Figure 1 A perspective view schematically showing a test cartridge for detecting liquid flow in a medical diversion device in an open state according to a preferred embodiment of the present disclosure.

[0034] Figure 2 Schematically shown Figure 1 The top view of the test cartridge in

[0035] Figure 3 Schematically shows Figure 1 a front view of the test cartridge in

[0036] Figure 4 Schematically shows Figure 1 a side view of the test cartridge in

[0037] Figure 5 Schematically shows Figure 1 a top view of the test cartridge in the closed state in

[0038] Figure 6 Schematically shows Figure 1 a front view of the test cartridge in the closed state in

[0039] Figure 7 Schematically shows Figure 1 a side view of the test cartridge in the closed state and in the perspective view from left to right in

[0040] Explanation of reference numerals:

[0041] 1: Top cover

[0042] 2: Main body part

[0043] 3: Conduit joint

[0044] 4: Fluid sensing device

[0045] 5: Pivoting mechanism

[0046] 11: Joint surface

[0047] 111: First flat surface part

[0048] 112: Second flat surface part

[0049] 12: Groove

[0050] 13: Locking mechanism

[0051] 131: Operating element

[0052] 132: Latch part

[0053] 14: Plate-shaped recess

[0054] 15: Top cover housing

[0055] 16: Block-shaped recess

[0056] 21: Joint surface

[0057] 211: Third flat surface part;

[0058] 212: Fourth flat surface portion:

[0059] 22: Groove

[0060] 23: Block-shaped recess

[0061] 24: Plate-shaped protrusion;

[0062] 25: Display screen Detailed implementation mode

[0063] Combined with the accompanying drawings of the specification below, the preferred embodiments of the present invention will be further described in detail. The following description is exemplary and not a limitation of the present invention. Any other similar situations also fall within the protection scope of the present invention.

[0064] In the following specific description, directional terms, such as "left", "right", "up", "down", "front", "rear", etc., are used with reference to the directions described in the accompanying drawings. The components of the embodiments of the present invention can be placed in a variety of different directions, and the directional terms are for illustrative purposes and not restrictive.

[0065] From the above description and the following more detailed exemplary description of the test cartridge according to the preferred embodiment of the present disclosure, those skilled in the art will be able to understand that the present disclosure can be applied to detect the liquid flow in a medical diversion device, especially applicable to a relatively complex and restrictive application environment such as clinical medicine, and has many advantages.

[0066] Figure 1-4 Schematically shows multiple views of a test cartridge for detecting liquid flow in a medical diversion device according to a preferred embodiment of the present disclosure, wherein the test cartridge is in an open state. Figure 5-7 Then schematically shows multiple views of the test cartridge in a closed state.

[0067] Figure 1-4 Schematically shows a fluid sensing device suitable for being arranged in the test cartridge and a catheter connector 3 connected to the fluid sensing device and optionally integrated into one body. The catheter connector 3 can be connected to a catheter (not shown) of a medical diversion device through which a liquid (for example, patient body fluid or physiological fluid for infusion) flows. It can be understood that the fluid sensing device 4 is arranged in the catheter or communicates with the catheter via the catheter connectors 3 on the opposite sides, and is configured to be able to sense the liquid flow in the catheter and generate a corresponding electrical signal based on the liquid flow.

[0068] Nowadays, since there are already fluid sensing devices 4 in the art that can achieve the above-mentioned measurements and are of low cost, in the medical field, it has become completely feasible to pre-set or integrate such fluid sensing devices 4 into related medical catheter products without incurring significant high costs. Examples of the fluid sensing device 4 will be described below.

[0069] Referring Figure 1-7 As shown, a lid 1 and a main body part 2 connected via a pivoting mechanism 5 are included according to a preferred embodiment of the present disclosure. The pivoting mechanism 5 is configured to allow the lid 1 to pivot relative to the main body part 2 about a pivot axis between a closed position and an open position.

[0070] The lid 1 and the main body part 2 respectively include mating surfaces 11, 21 having a partially recessed shape. The partially recessed shape includes grooves 12, 22 extending transversely through the mating surfaces 11, 21 and block-shaped recesses 16, 23 communicating with the grooves 12, 22. When the lid 1 is in the closed position, the grooves 12, 22 of the two together form a channel adapted to hold a catheter, and the block-shaped recesses 11 and 21 of the two together form a hollow space for receiving and fixing the fluid sensing device. Further, the main body part 2 also includes a receiving circuit (not shown), and the receiving circuit has electrical contacts that can be electrically connected to the fluid sensing device fixed in the hollow space for obtaining an electrical signal from the fluid sensing device.

[0071] In particular, referring Figure 1 and 2 As shown, the lid 1 further includes a lid housing 15 and a locking mechanism 13 with an operating element 131. The operating element 131 is arranged at a distal portion of the lid housing 15 opposite to the pivot axis and the outer surface of the operating element 131 is substantially flush with the distal portion of the lid housing 15. The locking mechanism 13 is configured to lock the lid 1 relative to the main body part 2 when the lid 1 is in the closed position and can only be unlocked to open the lid 1 by pushing the operating element 131 in a predetermined direction, wherein the predetermined direction is perpendicular to the extension direction of the pivot axis and extends substantially along the outer surface of the distal portion of the lid housing 15. Referring Figure 1 and 2 As shown, what is referred to herein as "distal" or "distal portion" generally means away from the pivot axis, where the pivot axis is generally located adjacent to the back of the detection box, and the distal portion is generally near the front of the detection box in the closed state of the lid.

[0072] It should be understood that the detection box mainly consists of a lid 1 and a main body part 2 connected via a pivoting mechanism 5, which avoids the risk of components of the detection box detaching from the detection box and being lost. And, more importantly, referring Figure 5-7As shown, this design of the top cover 1 of the test cartridge and its locking mechanism 13 enables the operating element 131 of the locking mechanism 13 to extend substantially along the outer surface of the distal portion of the top cover housing 15 in any state, which in turn maximally avoids the risk that people such as patients, doctors, and nurses accidentally touch the operating element 131 and actuates it, causing the test cartridge to be accidentally opened during operation. This feature is very beneficial and user-friendly for the usage environment in a hospital ward because it means that there is no need to pay attention to the test cartridge itself during the operation of the test cartridge (for example, monitoring the fluid flow rate of a patient or the flow rate of physiological fluid delivered to a patient).

[0073] Reference Figure 1 and 2 As shown, according to a preferred embodiment of the present disclosure, the main body portion 2 further includes a plate-shaped protrusion 24 that protrudes upward from the joint surfaces 11, 21 of the main body portion 2 at the distal end opposite to the pivot axis and forms a part of the distal end surface of the main body portion 2 for attaching a display screen 25. The top cover 1 further includes a plate-shaped recess 14. The plate-shaped recess 14 and the plate-shaped protrusion 24 have complementary shapes and have two adjacent surfaces that are substantially perpendicular to the joint surfaces 11, 21. The display screen 25 can provide an easily observable flow rate / flow monitoring data for patients or medical staff, such as the total flow rate in the past hour or the cumulative flow rate in the past 24 hours. And reference Figure 3 and 6 As shown, the fact that the plate-shaped protrusion 24 forms a part of the distal end surface of the main body portion 2 can also provide a larger area for setting a display screen on the front of the test cartridge to provide a larger display screen.

[0074] Further preferably, with combined reference to Figure 1-2 and shown in 4 - 7, the top cover housing 15 has an upwardly convex arc-shaped top surface, and the arc-shaped top surface has a notch at the distal end opposite to the pivot axis ( Figure 1-2 the notch is visible in), and the shape of the notch is adapted to the shape of the plate-shaped protrusion 24.

[0075] Further preferably, with combined reference to Figure 1-2 and shown in 5 - 7, the operating element 131 is arranged at the edge portion of the top cover housing 15 adjacent to the notch, and the edge portion has an upward inclination angle with respect to the joint surfaces 11, 21, and the inclination angle is between 15 degrees and 60 degrees. Preferably, the inclination angle is between 20 degrees and 40 degrees.

[0076] The advantage of adopting the above-mentioned preferred design and designing the edge portion mentioned above to have an upward inclination angle of about 15-60 degrees (preferably 20-40 degrees) relative to the engagement surfaces 11, 21 is that the design of the edge portion of the top cover shell 15 allows the operator to push the operating element 131 (for example, in the form of a slider) in the unlocking direction so that the force applied by the operator will naturally provide a sufficiently large component force in the direction of opening the top cover 1 (for example, upward) so that the top cover 1 is opened along with the unlocking operation, refer to Figure 5 This provides a process with a very high success rate in which the unlocking and opening of the top cover 1 can be basically completed simultaneously through a single action of the operator.

[0077] In other words, this design allows for an extremely simple and quick operation of opening / closing the top cover 1. To open the top cover 1, it is basically only necessary to (for example, by using the thumb while holding the test box) push the operating element 131 in a predetermined direction to release the lock and use the force of the pushing operation to push the top cover 1 to open, for example Figure 5 In the view shown, pushing the operating element 131 upward will naturally generate an outward component force perpendicular to the paper surface (a component force toward the top of the detection box), which will naturally push the unlocked top cover 1 to open.

[0078] This means that the user actions required for unlocking and opening the top cover 1 are simple and continuous, and there is almost no inconvenience or lag in operation. As for closing the top cover 1, the user only needs to close the top cover 1 in any way.

[0079] As for the engaging surfaces 11 and 21 with partial concave shapes respectively provided on the top cover 1 and the main body 2, it can be understood that when the top cover 1 is in the closed position and is closed on the main body 2, the channel formed by the grooves 12 and 22 of the two will inevitably hold the catheter therein, and the hollow space formed by the block-shaped recessed parts 16 and 23 of the two will inevitably accommodate and fix the fluid sensing device 4 therein, so the operator will not have to worry about any inconspicuous misoperation. Because, if the catheter or the fluid sensing device 4 is not in the correct position, then the top cover 1 will obviously not be able to cover the main body 2 directly so that the engaging surfaces 11 and 21 of the two engage with each other, and this is almost impossible to be ignored by any operator.

[0080] In addition, the above detection box can be made of lightweight materials, and due to the above installation method and principle of attachment to the catheter and the fluid sensing device 4 and the simple structure of the detection box itself, the detection box can be made to have a very small size to save the space it occupies. At the same time, in this installation, the catheter can be regarded as a carrier or carrier for carrying or hanging the detection box, so there is no need to additionally equip a bracket for mounting the detection box.

[0081] Similarly, once the top cover 1 and the main body portion 2 are closed to the closed state as shown Figure 5-7 Once in the closed state as shown, there is generally no relative movement between the detection cartridge and the conduit or the fluid sensing device 4 because the locking mechanism 13 locks the position of the top cover 1 relative to the main body portion 2. Therefore, using the above-described detection cartridge for fluid detection in a pipeline has strong robustness and is hardly affected by accidental touches of surrounding people or equipment.

[0082] It can be understood that the block-shaped recesses 16, 23 can be adapted to the shape of the fluid sensing device 4. For example, in the illustrated example, they each generally have a rectangular planar shape. Since the fluid sensing device 4 usually has a shape or cross-sectional shape inconsistent with the conduit, the matching shapes of the block-shaped recesses 16, 23 and the fluid sensing device 4 help prevent any movement of the detection cartridge relative to the conduit or the fluid sensing device 4, and are particularly suitable for a medical diversion device using a flexible conduit.

[0083] According to a preferred embodiment of the present disclosure, the locking mechanism 13 further includes:

[0084] A stop portion (not shown in the figure), the stop portion protruding from the adjacent surface of the plate-shaped protrusion 24;

[0085] A latch portion 132, the latch portion 132 is disposed on the plate-shaped recess 14 and connected to the operating element 131, so that it can move from the locked position to the unlocked position along with the movement of the operating element 131 in a predetermined direction. Wherein, in the locked position, the latch portion 132 extends beyond the adjacent surface of the plate-shaped recess 14 to a first protruding height, and in the unlocked position, the latch portion 132 does not extend beyond the adjacent surface of the plate-shaped recess 14.

[0086] Although the stop portion is not shown in the figure, it can be understood that the position where the stop portion is provided and the direction in which it laterally protrudes from the plate-shaped protrusion 24 correspond to the position where the latch portion 132 is provided. The stop portion has an appropriate shape so that it can contact the latch portion 132 in the locked position or the closed state of the top cover 1 to prevent the top cover 1 from being opened upward.

[0087] The locking mechanism 13 is optionally further designed such that when the top cover 1 is in the closed position, the gap between the two adjacent surfaces does not exceed 3 mm, and the first protruding height is between 0.5 mm and 2 mm. This design ensures that the top cover 1 can be safely locked in the closed position, and the operating stroke required for unlocking is very short, which is more convenient for the user to complete the unlocking operation with a finger while holding the detection cartridge. In addition, this design of the locking mechanism 13 also allows the user to close the top cover 1 in any way (i.e., the closed or sealed position of the top cover 1 relative to the main body portion 2), and the latch portion 132 and the stop portion will engage and prevent the top cover 1 from being opened.

[0088] According to a preferred embodiment of the present disclosure, with reference to Figure 1-2 in particular Figure 2 as shown, relative to the center line parallel to the pivot axis of the joining surfaces 11, 21, the grooves 12, 22 (i.e., the channels adapted to hold the catheter) are offset by a first offset distance. More specifically, the grooves 12, 22 divide the joining surfaces 11, 21 of the top cover 1 into a first flat surface portion 111 adjacent to the plate-like protrusion 24 in the closed position and a second flat surface portion 112 adjacent to the pivot axis. The size of the second flat surface portion 112 is between 1.3 times and 3 times, and preferably between 1.5 times and 2.5 times, the size of the first flat surface portion 111.

[0089] It can be understood that the joining surfaces 11, 21 of the main body portion 2 have a structure exactly corresponding to that of the joining surfaces 11, 21 of the above-mentioned top cover 1, that is, the grooves 12, 22 divide the joining surfaces 11, 21 of the main body portion 2 into a third flat surface portion 211 adjacent to the plate-like protrusion 24 and a fourth flat surface portion 212 adjacent to the pivot axis. The size of the fourth flat surface portion 212 is between 1.3 times and 3 times, and preferably between 1.5 times and 2.5 times, the size of the third flat surface portion 211.

[0090] This preferred embodiment provides an asymmetric design in which the channels adapted to hold the catheter are not centered relative to the joining surfaces 11, 21, making it impossible to misplace the fluid sensing device together with the catheter in the test cartridge in the reverse direction.

[0091] For example, the first offset distance reaches more than 1 / 20, preferably more than 1 / 8, of the width of the entire joining surfaces 11, 21 (i.e., the dimension in the vertical direction in Figure 2 ); or, this offset makes the sizes of the first flat surface portion 111 and the second flat surface portion 112 differ significantly, exceeding 1 / 3 (preferably 1 / 2) of the smaller flat surface portion of the two. Moreover, the design in which the flat surface portion on the side closer to the pivot axis has a relatively smaller size also facilitates the operation of placing the fluid sensing device 4 together with the catheter into the test cartridge or removing it from the test cartridge.

[0092] With reference again to Figure 1 and 2 as shown, according to a preferred embodiment of the present disclosure, relative to the center line parallel to the pivot axis of the recess, the grooves 12, 22 are offset by a second offset distance, where the second offset distance has the same offset direction as the first offset distance. For example, the second offset distance reaches the width dimension of the block-shaped recess (i.e., the detection sensor) (i.e., Figure 2more than 1 / 20, preferably more than 1 / 8 of the vertical dimension in

[0093] According to some preferred embodiments of the present disclosure, the fluid sensing device 4 is a liquid pressure sensing device, which is configured to sense the pressure difference between the inflow pressure and the outflow pressure of the flowing liquid and generate a corresponding electrical signal based on the pressure difference. For example, the fluid sensing device 4 may include a channel portion and a fluid sensor chip, and the chip may be, for example, an existing MEMS micro flow sensor chip.

[0094] Wherein, the fluid sensing device 4, or the chip contained therein, or the processing unit contained in the detection cartridge may be pre-set with a flow rate calculation algorithm, and the flow rate calculation algorithm includes a flow velocity-pressure difference function. Thus, the flow velocity and / or the liquid flow rate of the liquid passing through the liquid pressure sensing device can be calculated according to the flow velocity-pressure difference function.

[0095] According to some preferred embodiments of the present disclosure, there is also provided a detection system for detecting the liquid flow in a medical diversion device. The detection system includes any detection cartridge as described above and a fluid sensing device 4 disposed in a catheter. It can be understood that in order to make more full use of the real-time liquid flow parameters that can be obtained by the detection cartridge described above, the detection system may further be provided with a host computer connected to the detection cartridge in a wireless communication manner. The host computer can remotely obtain the real-time data obtained locally by the detection cartridge and perform further data analysis, storage, summarization or analysis.

[0096] The detection cartridge and the detection system according to the above embodiments of the present disclosure help to improve the reliability and robustness of the detection of liquid flow in the complex environment of clinical medicine, and make the operations required for performing such detections more convenient and efficient. Moreover, the risk of component detachment or loss of the detection cartridge itself is reduced, and the risk of misoperation and misactuation related to the detection cartridge switch is also reduced or even avoided.

[0097] Although the specific embodiments of the present invention have been described above, those skilled in the art should understand that these are only examples, and the protection scope of the present invention is defined by the appended claims. Without departing from the principles and essence of the present invention, those skilled in the art can make various changes or modifications to these embodiments, but these changes and modifications all fall within the protection scope of the present invention.

Claims

1. A detection cartridge for detecting liquid flow in a medical diversion device, the diversion device having a conduit through which liquid flows, characterized in that, A fluid sensing device is disposed in the catheter, and the fluid sensing device is configured to sense the liquid flow in the catheter and generate a corresponding electrical signal based on the liquid flow; The detection box includes a top cover and a main body portion connected via a pivoting mechanism, and the pivoting mechanism is configured to allow the top cover to pivot relative to the main body portion about a pivot axis between a closed position and an open position; The top cover and the main body portion respectively include engaging surfaces having a partially recessed shape, the partially recessed shape including a groove extending transversely through the engaging surface and a recess communicating with the groove. When the top cover is in the closed position, the grooves of the two together form a channel adapted to hold the catheter, and the recesses of the two together form a hollow space for receiving and fixing the fluid sensing device; Moreover, the main body portion further includes a receiving circuit, and the receiving circuit has electrical contacts that can be electrically connected to the fluid sensing device fixed in the hollow space for obtaining the electrical signal from the fluid sensing device; The top cover further includes a top cover housing and a locking mechanism with an operating element. The operating element is disposed at a distal portion of the top cover housing opposite to the pivot axis, and the outer surface of the operating element is substantially flush with the distal portion of the top cover housing. The locking mechanism is configured to lock the top cover relative to the main body portion when the top cover is in the closed position, and can only be unlocked to open the top cover by pushing the operating element in a predetermined direction. The predetermined direction is perpendicular to the extension direction of the pivot axis and extends substantially along the outer surface of the distal portion of the top cover housing.

2. The detection cartridge for detecting liquid flow in a medical diversion device according to claim 1, wherein, The main body portion further includes a plate-like protrusion that protrudes upward from the engaging surface of the main body portion at a distal end opposite to the pivot axis and forms a part of the distal face of the main body portion for attaching a display screen; The top cover further includes a plate-like recess, and the plate-like recess and the plate-like protrusion have complementary shapes and two adjacent surfaces substantially perpendicular to the engaging surface.

3. The detection cartridge for detecting liquid flow in a medical diversion device according to claim 2, characterized in that, The top cover housing has an upwardly convex arc-shaped top surface, and the arc-shaped top surface has a notch at a distal end opposite to the pivot axis, and the shape of the notch is adapted to the shape of the plate-like protrusion.

4. The detection cartridge for detecting liquid flow in a medical diversion device according to claim 3, characterized in that, The operating element is disposed at an edge portion of the top cover housing adjacent to the notch, and the edge portion has an upward inclination angle relative to the engaging surface, and the inclination angle is between 15 degrees and 60 degrees.

5. The detection cartridge for detecting liquid flow in a medical diversion device according to claim 4, characterized in that, The inclination angle is between 20 degrees and 40 degrees.

6. The detection cartridge for detecting liquid flow in a medical drainage device according to claim 2, wherein, The locking mechanism further includes: A stop portion that protrudes from an adjacent surface of the plate-like protrusion; A latch portion, the latch portion is disposed on the plate-shaped recess and is connected to the operating element, so that it can move from the locked position to the unlocked position along with the movement of the operating element in the predetermined direction. Wherein, in the locked position, the latch portion protrudes beyond the adjacent surface of the plate-shaped recess to reach a first protrusion height, and in the unlocked position, the latch portion does not protrude beyond the adjacent surface of the plate-shaped recess.

7. The detection cartridge for detecting liquid flow in a medical diversion device according to claim 6, characterized in that, When the top cover is in the closed position, the gap between the two adjacent surfaces does not exceed 3 mm, and the first protrusion height is between 0.5 mm and 2 mm.

8. The detection cartridge for detecting liquid flow in a medical diversion device according to claim 1, characterized in that, The groove is offset by a first offset distance with respect to the center line parallel to the pivot axis of the engaging surface.

9. The detection cartridge for detecting liquid flow in a medical diversion device according to claim 8, wherein, The groove divides the engaging surface of the top cover into a first flat surface portion adjacent to the plate-shaped protrusion in the closed position and a second flat surface portion adjacent to the pivot axis. The size of the second flat surface portion is between 1.3 times and 3 times the size of the first flat surface portion.

10. The detection cartridge for detecting liquid flow in a medical diversion device according to claim 9, wherein, The size of the second flat surface portion is between 1.5 times and 2.5 times the size of the first flat surface portion.

11. The detection cartridge for detecting liquid flow in a medical diversion device according to claim 8, characterized in that, The groove is offset by a second offset distance with respect to the center line parallel to the pivot axis of the recess, wherein the offset directions of the second offset distance and the first offset distance are the same.

12. A detection system for detecting liquid flow in a medical diversion device, characterized in that, The detection system includes a detection cartridge for detecting liquid flow in a medical diversion device as described in any one of claims 1-11 and the fluid sensing device disposed in or connected to the catheter.

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