Non-contact pressure measurement system for balloon catheter and non-contact pressure measurement method for balloon catheter using the same

Abstract

A non-contact pressure measurement system for a balloon catheter and a non-contact pressure measurement method for a balloon catheter using the same include a chamber section, a balloon, a tube section, a pump section, and a displacement sensor section. The chamber section stores saline solution. The balloon is located inside the body and expands when the saline solution is provided. The tube section connects the chamber section and the balloon. The pump section controls the supply of the saline solution through the tube section. The displacement sensor section measures the degree of expansion of the tube section, which expands when the saline solution is provided, at a predetermined section of the tube section.

Description

[Technical Field]

[0001] The present invention relates to a non-contact pressure measurement system for a balloon catheter and a non-contact pressure measurement method for a balloon catheter using the same, and more particularly to a non-contact pressure measurement system for a balloon catheter that can non-contactly measure the pressure and amount of saline injected into a uterine balloon tamponade or a uterine balloon catheter in a method for treating postpartum hemorrhage, and a non-contact pressure measurement method for a balloon catheter using the same. [Background technology]

[0002] Postpartum hemorrhage is excessive bleeding within 24 hours after delivery, and if not treated appropriately, it can cause fatal problems. The main methods used to treat this type of postpartum hemorrhage are hemostasis methods using uterine balloon tamponades or uterine balloon catheters.

[0003] In the past, hemostasis methods using uterine balloon tamponades or uterine balloon catheters required medical staff to manually inject saline solution into the patient, making it difficult to inject the required amount of saline solution into the patient. Furthermore, it was also difficult to quantitatively measure the injection pressure of the saline solution being injected. In other words, the procedure relied on the experience of the medical staff, resulting in numerous problems, such as excessive or insufficient pressure or volume being injected.

[0004] Meanwhile, prior art such as Korean Patent Publication No. 10-2019-0111294 discloses mechanisms for treating such intrauterine bleeding, but it merely discloses the mechanical structure and design features for treating bleeding, and no technology has been developed to measure the amount and pressure of saline solution injected when using an actual catheter.

[0005] In particular, injecting saline through a uterine balloon catheter requires the use of a tube that is pulled into the human body, and adding a separate device or structure for measuring the injection amount or pressure on the tube is very restrictive in order to prevent infection inside the human body due to the saline. [Prior art documents] [Patent documents]

[0006] [Patent Document 1] Republic of Korea Patent Publication No. 10-2019-0111294 Summary of the Invention [Problem to be solved by the invention]

[0007] The present invention has been made with this in mind, and an object of the present invention is to provide a non-contact pressure measurement system for a balloon catheter that can effectively assist treatment in a method of treating postpartum hemorrhage by measuring the pressure applied to a uterine balloon tamponade or uterine balloon catheter and the amount of saline injected in a non-contact manner, thereby preventing contamination and infection and enabling accurate measurements.

[0008] Another object of the present invention is to provide a method for non-contact pressure measurement of a balloon catheter using the non-contact pressure measurement system. [Means for solving the problem]

[0009] According to one embodiment of the present invention, a non-contact pressure measurement system includes a chamber, a balloon, a tube, a pump, and a displacement sensor. The chamber stores saline solution. The balloon is located inside the body and expands when the saline solution is supplied. The tube connects the chamber and the balloon. The pump controls the supply of the saline solution through the tube. The displacement sensor measures the degree of expansion of the tube, which expands in response to the supply of the saline solution, at a predetermined section of the tube.

[0010] The chamber includes a weight sensor located below the chamber and configured to measure the weight of the saline solution stored in the chamber.

[0011] The pump section supplies the saline solution in pulses through the tube section without contacting the saline solution.

[0012] Furthermore, it includes an injection amount measuring unit that measures the amount of saline injected into the balloon by the tube unit based on the weight of the saline measured by the weight sensor unit and the pulse information operated by the pump unit.

[0013] The displacement sensor unit includes a first fixing part that fixes one end of the tube portion at a predetermined section, a second fixing part that fixes the other end of the tube portion at a predetermined section, and a sensor unit that is located between the first and second fixing parts and measures the degree of expansion of the tube portion due to the supply of the saline solution.

[0014] The sensor unit is a displacement sensor that uses a laser to measure the degree of expansion of the tube portion.

[0015] The sensor unit includes a light emitting unit located on one side of the tube unit for emitting a laser beam, and a light receiving unit located on the other side of the tube unit for receiving the laser beam.

[0016] The displacement sensor unit further includes a base plate to which the first and second fixed portions are fixed at a predetermined distance apart, a first connector connected to one end of the tube portion and fixed on the first fixed portion, and a second connector connected to the other end of the tube portion and fixed on the second fixed portion.

[0017] The spacing between the first and second fixing parts is variable on the base plate, and the base plate has a plurality of fixing grooves formed thereon so that the first and second fixing parts are fixed at different spacings.

[0018] A plurality of the sensor units are arranged on a predetermined section of the tube portion to form a sensor array, and the sensor array measures the degree of expansion of the tube portion at a plurality of positions on the tube portion.

[0019] Furthermore, it includes a database section in which the relationship between the pressure applied to the tube section and the degree of expansion of the tube section is stored in advance for each type of tube section, and a pressure measurement section that measures the pressure applied to the tube section based on the information stored in the database section and the degree of expansion of the tube section measured by the displacement sensor section.

[0020] In accordance with another embodiment of the present invention, a non-contact pressure measurement method pre-stores a relationship between pressure applied to a tube portion and the degree of expansion of the tube portion for each type of tube portion. Saline stored in a chamber is injected into the tube portion to provide it to a balloon. The amount of saline injected into the tube portion is measured. The degree of expansion of the tube portion, which expands due to the supply of saline, is measured at a predetermined section of the tube portion. The pressure applied to the tube portion is measured based on the pre-stored information and the degree of expansion of the tube portion.

[0021] If an emergency occurs during the process of injecting the saline solution into the tube portion, the method includes the steps of discharging all of the saline solution provided in the balloon into the chamber portion and stopping the injection of the saline solution into the tube portion. [Effects of the Invention]

[0022] According to the present invention, the pressure and amount of saline solution supplied to a balloon located inside the body can be measured without direct contact with the saline solution or tube, i.e., by using a non-contact system, which prevents problems such as infection and avoids treatment based on the experience and subjective judgment of medical staff, allowing for more objective treatment based on more accurate measurement results.

[0023] In other words, the amount of saline solution being supplied can be accurately measured without contact based on the pulse information from the weight sensor unit provided in the chamber unit and the pump unit that supplies saline solution in pulses, and the displacement sensor measures the degree of expansion of the tube unit, allowing the pressure exerted by the saline solution on the tube unit to be accurately measured.

[0024] In this case, the degree of expansion of the tube section measured by the displacement sensor can be used to derive pressure using the relationship between the degree of expansion of a specified tube section and pressure, so that the pressure at which saline is supplied can be accurately derived for various types of tubes or various saline supply environments.

[0025] In particular, in order to measure the degree of expansion of the tube portion using a displacement sensor, the tube portion is fixed by a pair of fixing parts so that the tube portion expands at a predetermined section on the tube portion, and the expansion displacement of the tube portion is directly measured using a laser, so that the degree of expansion can be measured relatively accurately.

[0026] In this case, by varying the length of a predetermined section on the tube section or by applying a sensor array in which multiple sensor units are aligned within the predetermined section, the degree of expansion of the tube section can be accurately measured depending on various environmental variables such as the type of tube section, the type of saline solution, or the pressure and amount of saline solution applied. [Brief explanation of the drawings]

[0027] [Figure 1]FIG. 1 is a schematic diagram showing a non-contact pressure measurement system according to one embodiment of the present invention.

[0028] [Figure 2] 2a to 2c are plan views showing sensing states of the displacement sensor unit in FIG. [Figure 3] 3a to 3c are cross-sectional views taken along line II' in FIG. 2a in a sensing state of the displacement sensor unit in FIG.

[0029] [Figure 4] 4a is a plan view showing in detail the displacement sensor section in FIG. 1, and FIGS. 4b and 4c are plan views showing an example in which the length of the tube section in FIG. 4a is extended.

[0030] [Figure 5] 5a and 5b are plan views showing other examples of the displacement sensor unit in FIG.

[0031] [Figure 6] FIG. 6 is a perspective view showing the first and second fixing parts in FIG. 4a.

[0032] [Figure 7] FIG. 7 is a perspective view showing a state in which the first and second connectors and the tube portion are fixed onto the first and second fixing portions in FIG. 4a.

[0033] [Figure 8] FIG. 8 is a flowchart showing a non-contact pressure measurement method using FIG.

[0034] <Explanation of symbols>

[0035] 10: Non-contact pressure measurement system 50: Tube section

[0036] 100: Chamber section 110: Weight sensor unit

[0037] 200: Pump section 300: Injection amount measuring section

[0038] 400: Displacement sensor part 410: Base plate

[0039] 420: Sensor unit 425, 426: Sensor array

[0040] 430, 440: Fixed part 450, 460: Connector

[0041] 500: Pressure measurement section 600: Balloon

[0042] 700: Control unit 800: Database Department DETAILED DESCRIPTION OF THE INVENTION

[0043] The present invention may be modified in various ways and may have various forms, and specific embodiments will be described in detail herein. However, this is not intended to limit the present invention to the specific disclosed form, but it should be understood that the present invention includes all modifications, equivalents, and alternatives falling within the spirit and technical scope of the present invention. In the accompanying drawings, the same or similar reference numerals indicate the same or similar components. Terms such as "first," "second," etc. are used to describe various components, but the components are not limited by these terms.

[0044] The above terms are used only for the purpose of distinguishing one component from another. The terms used in this application are merely used to describe specific embodiments and are not intended to limit the present invention. The singular expression includes the plural expression unless the context clearly indicates otherwise.

[0045] In this application, the use of terms such as "comprises" or "consists" is intended to specify the presence of the features, numbers, steps, operations, components, parts, or combinations thereof described in the specification, but is to be understood as not precluding the presence or possible addition of one or more other features, numbers, steps, operations, components, parts, or combinations thereof.

[0046] Unless otherwise defined, all terms used herein, including technical and scientific terms, have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. Terms as defined in commonly used dictionaries should be interpreted as having a meaning consistent with the meaning they have in the context of the relevant art, and should not be interpreted as having an idealized or overly formal meaning unless expressly defined in this application.

[0047] DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, preferred embodiments of the present invention will be described in more detail with reference to the accompanying drawings.

[0048] FIG. 1 is a schematic diagram showing a non-contact pressure measurement system according to one embodiment of the present invention.

[0049] As shown in FIG. 1, the non-contact pressure measurement system 10 (hereinafter referred to as the pressure measurement system) according to this embodiment includes a chamber section 100, a pump section 200, an injection amount measurement section 300, a displacement sensor section 400, a pressure measurement section 500, a balloon 600, a control section 700, a database section 800, and a tube section 50.

[0050] The chamber unit 100 is a chamber that forms a predetermined space therein, and saline solution 120 is stored in the internal space of the chamber unit 100. The saline solution 120 is physiological saline that passes through the inside of the tube unit 50 and is provided to the balloon 600, and any type of saline solution may be used.

[0051] The balloon 600 is located inside the body, for example, the uterus, and is inflated by the saline solution 120 provided inside the balloon 600. As described above, when the balloon 600 is inflated, it can stop bleeding at the site of postpartum bleeding, and serves as a so-called uterine balloon tamponade or uterine balloon catheter.

[0052] In this embodiment, the amount of saline solution 120 provided in the balloon 600 and the injection pressure are measured, thereby providing objective information on the amount and pressure, thereby making it possible to maintain a constant amount of saline solution and injection pressure required to stop postpartum hemorrhage.

[0053] The tube portion 50 extends from the chamber portion 100 to the balloon 600, and in particular, the portion adjacent to the balloon 600 that is drawn into the body must be kept free of contamination to prevent infection.

[0054] In this case, there are no particular limitations on the material and length of the tube portion 50, and various options are available. In this embodiment, even if the material of the tube portion 50 is changed, the pressure measurement system 10 (described later) can accurately measure the amount and pressure of saline solution supplied, which is advantageous in that the pressure measurement system 10 can be applied to various types of tube portions.

[0055] Meanwhile, a weight sensor unit 110 is installed under the chamber unit 100. The weight sensor unit 110 can sense the weight of the chamber unit 100 and the saline solution 120, thereby obtaining weight information of the saline solution 120, i.e., weight information of the saline solution 120 provided by the tube unit 50.

[0056] In this case, weight information of the saline solution 120 obtained by the weight sensor unit 110 is provided to the injection amount measurement unit 300 .

[0057] The pump unit 200 pumps the saline solution 120 so that the saline solution 120 flows into the tube unit 50 .

[0058] In this case, the pump unit 200 is operated based on an operation control signal from the control unit 700, and provides the saline solution 120 toward the balloon 600 according to a control command from the control unit 700. Alternatively, the pump unit 200 can discharge the saline solution 120 filled in the balloon 600 toward the chamber unit 100.

[0059] The pump unit 200 does not come into contact with the saline solution 120 and pumps the saline solution 120, for example, by performing pulse driving to pump the saline solution 120 and provide the saline solution 120 in the tube unit 50 at a constant amount.

[0060] Meanwhile, information regarding the pulse driving driven by the pump unit 200 is provided to the injection amount measuring unit 300 .

[0061] The injection amount measuring unit 300 can measure the amount of the saline solution 120 provided by the tube unit 50 based on information regarding the weight change of the saline solution 120 measured by the weight sensor unit 110 and pulse information from the pulse drive of the pump unit 200.

[0062] That is, based on the weight change information, information on the amount of saline solution 120 supplied to the tube portion 50 can be obtained. Similarly, since information on the amount of saline solution 120 provided per pulse in the pump portion 200 is already known, information on the amount of saline solution 120 supplied can be obtained based on the number of pulses.

[0063] Thus, the injection amount measuring unit 300 can obtain more accurate information about the amount of the saline solution 120 provided to the tube unit 50 based on the information about the weight change and the pulse information.

[0064] Meanwhile, the information on the amount of saline solution 120 thus obtained is provided to the control unit 700, which determines whether the amount falls within a predetermined volume and pressure range together with information on the supply pressure of the saline solution 120, which will be described later, and controls the operation of the pump unit 200 accordingly.

[0065] The displacement sensor unit 400 measures the pressure of the saline solution 120 passing through the tube unit 50, and is designed to expand the tube unit 50 as the saline solution 120 passes through a predetermined section of the tube unit 50, and measures the pressure of the saline solution 120 by sensing the degree of expansion of the tube unit 50.

[0066] The displacement sensor unit 400 will be described in detail later.

[0067] The pressure measuring unit 500 measures the pressure applied to the tube unit 50 by the saline solution 120 based on information on the degree of expansion of the tube unit 50 measured by the displacement sensor unit 400 .

[0068] However, the displacement sensor unit 400 provides only information regarding the degree of expansion of the tube unit 50 to the pressure measurement unit 500, and based on this, the information stored in the database unit 800 is used to obtain the pressure applied to the tube unit 50, i.e., the pressure information of the saline solution 120.

[0069] The relationship between the degree of expansion of the tube portion and the pressure of the saline solution is stored in the database unit 800. In this case, the relationship between the degree of expansion of the tube portion and the pressure is also stored for various types of tube portions.

[0070] That is, in an environment similar to that of the non-contact pressure measurement system 10 in FIG. 1 (similar environment), saline solution is supplied to various tube sections, the applied pressure is measured using another pressure sensor, and the degree of expansion of the tube sections at the corresponding pressure is measured and stored in the database unit 800.

[0071] In this way, by storing the degree of expansion of the tube portion and the corresponding pressure information in a separate similar environment, it is possible to prevent the saline solution 120 from coming into direct contact with the outside, for example, a pressure sensor, and becoming contaminated during the actual treatment process, and it is also possible to derive the actual pressure information only from the information on the degree of expansion of the tube portion 50, which can be derived without contacting the saline solution 120.

[0072] Meanwhile, the pressure information of the saline solution 120 measured by the pressure measuring unit 500 as described above is provided to the control unit 700, and the control unit 700 determines whether the pressure is within a predetermined range, and if it is outside the predetermined range, performs control such as suspending the operation of the pump unit 200.

[0073] 2a to 2c are plan views showing the sensing state of the displacement sensor unit in FIG. 1, and FIGS. 3a to 3c are cross-sectional views taken along line II' in FIG. 2a in the sensing state of the displacement sensor unit in FIG.

[0074] First, as shown in Figures 2a and 3a, the displacement sensor part 400 includes a sensor unit 420 including a light emitting part 421, a light receiving part 422, and a base frame 423, a first fixing part 430, and a second fixing part 440.

[0075] Thus, in a predetermined region on the tube portion 50, one end of the tube portion 50 is fixed by the first fixing portion 430 and the other end is fixed by the second fixing portion 440, and the sensor unit 420 measures the displacement of the tube portion 50 which expands as the saline solution 120 passes through it.

[0076] Here, in the cases of Figures 2a and 3a, the saline solution 120 does not pass through the tube portion 50, and therefore the displacement of the tube portion 50 measured by the sensor unit 420 corresponds to the initial state.

[0077] Thereafter, as shown in Figures 2b and 3b, as the saline solution 120 passes through the tube portion 50, the tube portion 50 expands in a predetermined area fixed by the first and second fixing portions 430, 440, and the sensor unit 420 measures the degree of expansion of the tube portion 50.

[0078] Furthermore, as shown in Figures 2c and 3c, as the amount of saline solution 120 passing through the tube portion 50 increases, the degree of expansion of the tube portion 50 expanding in the specified area increases, and the sensor unit 420 measures the degree of expansion of the tube portion 50.

[0079] Thus, information on the degree of expansion of the tube portion 50 due to the supply of the saline solution 120 is obtained by the sensor unit 420 in real time, and the information thus obtained is provided to the pressure measuring portion 500 .

[0080] 4a is a plan view showing in detail the displacement sensor section in FIG. 1, and FIGS. 4b and 4c are plan views showing examples in which the length of the tube section in FIG. 4a has been extended.

[0081] First, as shown in FIG. 4 a, the displacement sensor unit 400 further includes a base plate 410 , a first connector 450 , and a second connector 460 .

[0082] The base plate 410 is a plate extending over a predetermined area, and the first and second fixing portions 430 and 440 and the sensor unit 420 are positioned on the base plate 410 .

[0083] In this case, a plurality of fixing grooves 411 are formed on the base plate 410 at predetermined intervals, and the first and second fixing portions 430 and 440, which are spaced apart by a predetermined distance, are fixed in the fixing grooves 411 by fixing units (not shown).

[0084] 4b and 4c, the first and second fixing portions 430 and 440 may have various distances between them. As the distance between them changes, the length of the tube portion 50 extending between them also changes.

[0085] If the tube portion 50 is made of a relatively flexible material and has a large degree of expansion, and if the length at which the tube portion 50 is fixed by the first and second fixing portions 430 and 440 is too short, the amount of expansion of the tube portion 50 will be large, making it difficult for the sensor unit 420 to measure the degree of expansion of the tube portion 50.

[0086] On the other hand, if the tube portion 50 is made of a relatively rigid material and has a small degree of expansion, and if the length of the tube portion 50 fixed by the first and second fixing portions 430 and 440 is too long, the amount of expansion of the tube portion 50 will be small, making it difficult for the sensor unit 420 to measure the degree of expansion of the tube portion 50.

[0087] Therefore, as shown in Figures 4a to 4c, the distance between the first and second fixing parts 430, 440 can be controlled in various ways, taking into consideration the material of the tube part 50, i.e., the degree of expansion, and the type of saline solution 120 passing through the tube part 50.

[0088] Meanwhile, the sensor unit 420 is a displacement sensor that measures the degree of expansion of the tube part 50, that is, the displacement caused by expansion, using a laser, as described above.

[0089] In this case, the base frame 423 is fixed on the base plate 410 in a direction intersecting the extending direction of the tube portion 50 .

[0090] The light emitting unit 421 is located on one side of the tube unit 50 and emits a laser beam, and the light receiving unit 422 is located on the other side of the tube unit 50 and receives the laser beam that is emitted from the light emitting unit 421, passes through the tube unit 50, and reaches the light receiving unit 422. That is, the tube unit 50 extends between the light emitting unit 421 and the light receiving unit 422.

[0091] Thus, in the light receiving unit 422, the laser irradiated from the light emitting unit 421 is blocked by the tube portion 50, and the degree of expansion of the tube portion 50 is measured based on the laser that reaches the light receiving unit 422.

[0092] The first and second connectors 450, 460 will be described later.

[0093] 5a and 5b are plan views showing other examples of the displacement sensor unit in FIG.

[0094] In the displacement sensor section 401 in FIG. 5a, the distance between the first and second fixed sections 430, 440 is increased, so that three sensor units 420 are arranged in parallel to each other between the first and second fixed sections 430, 440 to form a sensor array 425.

[0095] In this case, the sensor units 420 are arranged in parallel at regular intervals, with the sensor units 420 having the same structure, in a direction perpendicular to the extending direction of the tube portion 50 .

[0096] Similarly, in the displacement sensor part 402 in FIG. 5b, as the distance between the first and second fixed parts 430, 440 increases, five sensor units 420 are arranged in parallel to each other between the first and second fixed parts 430, 440 to form a sensor array 425.

[0097] In this case, the sensor units 420 are arranged in parallel at regular intervals with the same structure in a direction perpendicular to the extending direction of the tube portion 50, as in FIG. 5a.

[0098] As described above, a plurality of sensor units are arranged between the first and second fixing portions 430, 440 to form sensor arrays 425, 426, thereby making it possible to measure the degree of expansion of the tube portion 50 at various positions of the tube portion 50 extending between the first and second fixing portions 430, 440.

[0099] Thus, based on information on the degree of expansion of the tube portion 50 at various positions sensed by the sensor arrays 425, 426, more accurate information on the degree of expansion of the tube portion 50 can be obtained even if the length of the measurement area of ​​the tube portion 50 increases.

[0100] Fig. 6 is a perspective view showing the first and second fixing parts in Fig. 4a. Fig. 7 is a perspective view showing the state in which the first and second connectors and the tube parts are fixed onto the first and second fixing parts in Fig. 4a.

[0101] As shown in FIG. 6, the first and second fixing portions 430 and 440 are disposed opposite each other and have symmetrical structures, so only the first fixing portion 430 will be described.

[0102] That is, the first fixing portion 430 includes a base portion 431 , an extension portion 433 , and a clamp portion 434 .

[0103] The base part 431 forms a base of the first fixing part 430 and is located on the base plate 410. In this case, a pair of fixing line grooves 432 are formed on the base part 431 and are aligned with the fixing grooves 411 on the base plate 410, and are fixed on the base plate 410 by a separate fixing unit (not shown).

[0104] The extension portion 433 extends upward from between the pair of fixed line grooves 432 at one end of the base portion 431, and extends to a predetermined height.

[0105] The clamping portion 434 is formed at the end of the extending portion 433, and a pair of clamping portions 434 protrude in the shape of a fixing protrusion, and an insertion portion 435 corresponding to a predetermined space is formed between the pair of clamping portions 434.

[0106] Thus, the first connector 450 is inserted onto the insertion portion 435 and fixed thereon, and the tube portion 50 is fixed thereon by the first connector 450 and the second connector 460 .

[0107] In this case, the extension portion 433 extends upward by a predetermined height, and therefore the tube portion 50 fixed between the first and second connectors 450, 460 also extends upward by a predetermined height, i.e., a predetermined height from the base plate 410.

[0108] In particular, the clamping portions 434 are provided in a pair in an annular shape and protrude toward the insertion portion 435, so that the first connector 450 positioned in the insertion portion 435 is stably fixed.

[0109] On the other hand, as shown in FIG. 7, the first connector 450 is fixed onto the insertion portion 435 of the first fixing portion 430, and the second connector 460 is fixed onto the insertion portion of the second fixing portion 440.

[0110] In this case, the first connector 450 includes a main body portion 451, a support portion 452 extending from the main body portion 451 and fixed on the insertion portion 435 of the first fixing portion 430, and a connecting portion 453 extending from the support portion 452 and connected to the tube portion 50.

[0111] Similarly, the second connector 460 also includes a main body portion 461 , a support portion 462 , and a connecting portion 463 that perform the same functions as the first connector 450 .

[0112] Thus, in the specified section, one end of the tube portion 50 is fixed to the first fixing portion 430 by the first connector 450, and the other end of the tube portion 50 is fixed to the second fixing portion 440 by the second connector 460.

[0113] As a result, the degree of expansion of the tube portion 50 at a predetermined section of the tube portion 50 is measured by the sensor unit 420 .

[0114] On the other hand, although FIG. 7 illustrates that the tube portion 50 is positioned only in the specified section, i.e., between the first and second fixing portions 430, 440, it can be inferred from FIG. 1 that the tube portion 50 extends through the main body portions 451, 461 of the first and second connectors 450, 460.

[0115] As described above, by positioning the displacement sensor unit 400 in a predetermined section of the tube portion 50, the degree of expansion in the corresponding section of the tube portion 50 can be measured, and thereby pressure information of the saline solution 120 passing through the tube portion 50 can be obtained.

[0116] In particular, since the pressure information is acquired by measuring the saline solution 120 in a non-contact manner, contamination and infection of the saline solution 120 can be minimized.

[0117] FIG. 8 is a flowchart showing a non-contact pressure measurement method using FIG.

[0118] As shown in FIG. 8, in the non-contact pressure measurement method using the non-contact pressure measurement system 10 according to this embodiment, first, information regarding the relationship between the pressure applied to the tube portion and the degree of expansion of the tube portion for each type of tube portion is stored in advance in the database unit 800 (step S10).

[0119] As described above, this can be performed in an environment similar to that of the non-contact pressure measurement system 10 in FIG.

[0120] Thereafter, the saline solution 120 stored in the chamber unit 100 is injected into the tube unit 50 and provided to the balloon 600 (step S20).

[0121] In this case, the weight sensor unit 110 installed in the chamber unit 100 senses information on the weight of the saline solution 120 stored in the chamber unit 100, i.e., the amount of change in the weight of the saline solution due to the supply of saline solution, and provides the information to the injection amount measurement unit 300.

[0122] In addition, when the saline solution 120 is supplied from the pump unit 200 to the tube unit 50 , supply pulse information is also provided to the injection amount measuring unit 300 .

[0123] Thus, the injection amount measuring unit 300 measures the amount of saline solution 120 provided into the tube unit 50 based on the weight (change) information of the saline solution 120 measured by the weight sensor unit 110 and the pulse information of the pump unit 200 (step S30).

[0124] Meanwhile, information on the measured amount of saline solution 120 is provided to the control unit 700 .

[0125] Thereafter, the degree of expansion of the tube portion 50 is measured by the displacement sensor portion 400 provided in a predetermined space of the tube portion 50 (step S40).

[0126] In this case, the measurement of the degree of expansion of the tube portion 50 in the displacement sensor portion 400 is as described above.

[0127] Meanwhile, the measurement result of the degree of expansion of the tube portion 50 is provided to the pressure measurement unit 500, and the pressure measurement unit 500 derives the pressure to be applied to the tube portion 50 based on the relationship between the pressure applied to the tube portion and the degree of expansion of the tube portion, which is stored in the database unit 800 (step S50).

[0128] The pressure measurement result of the tube part 50 thus derived is provided to the control part 700 .

[0129] Thus, the control unit 700 determines whether the amount and pressure of the saline solution 120 currently being provided are within the range of a predetermined injection amount and pressure based on the pressure measurement result of the tube unit 50 and information on the amount of the saline solution 120 provided to the tube unit 50 (step S60).

[0130] Thus, when the injection amount and pressure deviate from the predetermined ranges (step S60), the control unit 700 controls the pump unit 200 to stop the additional supply of the saline solution 120 (step S90).

[0131] In this case, if it is determined that the injection amount and the pressure still deviate from the predetermined range even if the additional supply of the saline solution 120 is stopped, the saline solution 120 provided in the balloon 600 is discharged to the chamber unit 100 (step S80), and for this discharge, the control unit 700 controls the pump unit 200 to pump in the reverse direction.

[0132] On the other hand, even if the injection amount and pressure fall within the predetermined ranges (step S60), if it is determined that an emergency situation has occurred (step S70), the control unit 700 performs emergency operations (steps S80 and S90).

[0133] The emergency situation refers to a situation where an external command to stop the operation is input from a medical staff member or a practitioner, or a patient is in a critical condition.

[0134] That is, when the above-mentioned emergency situation occurs, the control unit 700 controls the pump unit 200 to discharge the saline solution 120 provided in the balloon 600 into the chamber unit 100 (step S80), and the control unit 700 controls the pump unit 200 to stop the additional supply of the saline solution 120 (step S90).

[0135] According to an embodiment of the present invention, the pressure and amount of saline solution supplied to a balloon located inside the body can be measured without direct contact with the saline solution or tube, i.e., by using a non-contact system, which prevents problems such as infection and allows for more objective treatment based on more accurate measurement results, avoiding treatment that has traditionally been based on the experience and subjective judgment of medical staff.

[0136] In other words, the amount of saline solution being supplied can be accurately measured without contact based on the pulse information from the weight sensor unit provided in the chamber unit and the pump unit that supplies saline solution in pulses, and the displacement sensor measures the degree of expansion of the tube unit, allowing the pressure exerted by the saline solution on the tube unit to be accurately measured.

[0137] In this case, the degree of expansion of the tube portion measured by the displacement sensor can be used to derive the pressure using the relationship between the degree of expansion of the tube portion and pressure that has been stored in advance, so that the pressure at which saline is supplied can be accurately derived for various types of tubes or various saline supply environments.

[0138] In particular, in order to measure the degree of expansion of the tube portion using a displacement sensor, a pair of fixing parts are used to fix the tube portion at a predetermined section on the tube portion so that the tube portion can expand, and the expansion displacement of the tube portion is directly measured using a laser, so that the degree of expansion can be measured relatively accurately.

[0139] In this case, by varying the length of a predetermined section on the tube section or by applying a sensor array in which multiple sensor units are aligned within the predetermined section, the degree of expansion of the tube section can be accurately measured depending on various environmental variables such as the type of tube section, the type of saline solution, or the pressure and amount of saline solution applied.

[0140] While the present invention has been described above with reference to preferred embodiments, those skilled in the art will appreciate that various modifications and variations can be made to the present invention without departing from the spirit and scope of the invention as set forth in the following claims.

Claims

1. a chamber portion in which saline solution is stored; a balloon located inside the body and inflated by the application of said saline solution; a tube portion connecting the chamber portion and the balloon; a pump unit that controls the supply of the saline solution through the tube unit; a pump unit configured to supply the saline solution in pulses through the tube unit without contacting the saline solution; and a displacement sensor unit configured to measure the degree of expansion of the tube unit, which expands due to the supply of the saline solution, at a predetermined section of the tube unit. A non-contact pressure measurement system characterized by including an injection amount measurement unit that measures the amount of saline injected into the balloon by the tube unit based on the weight of the saline stored in the chamber unit and the pulse information operated by the pump unit.

2. The non-contact pressure measurement system according to claim 1 , wherein the chamber includes a weight sensor located below the chamber and measuring a weight of the saline solution stored in the chamber.

3. The displacement sensor unit a first fixing portion that fixes one end of the tube portion in a predetermined section; a second fixing portion that fixes the other end of the tube portion in a predetermined section; 2. The non-contact pressure measurement system according to claim 1, further comprising a sensor unit disposed between the first and second fixing portions, the sensor unit measuring the degree of expansion of the tube portion due to the supply of the saline solution.

4. 4. The non-contact pressure measurement system according to claim 3, wherein the sensor unit is a displacement sensor that uses a laser to measure the degree of expansion of the tube portion.

5. The sensor unit includes a light emitting unit located on one side of the tube unit and configured to emit a laser beam; 5. The non-contact pressure measurement system according to claim 4, further comprising a light receiving section located on the other side of the tube section, for receiving a laser beam.

6. The displacement sensor unit further includes: a base plate to which the first and second fixing portions are fixed with a predetermined distance between them; a first connector connected to one end of the tube portion and fixed on the first fixing portion; 4. The non-contact pressure measurement system according to claim 3, further comprising: a second connector connected to the other end of the tube portion and fixed on the second fixing portion.

7. a distance between the first and second fixing portions is variable on the base plate; The non-contact pressure measurement system according to claim 6 , wherein the base plate has a plurality of fixing grooves formed therein so that the first and second fixing portions are fixed at different intervals.

8. a plurality of the sensor units are arranged on a predetermined section of the tube portion to form a sensor array; 4. The non-contact pressure measurement system according to claim 3, wherein the sensor array measures the degree of expansion of the tube portion at a plurality of positions on the tube portion.

9. Furthermore, a database section in which the relationship between the pressure applied to the tube section and the degree of expansion of the tube section is stored in advance for each type of tube section; 2. The non-contact pressure measurement system according to claim 1, further comprising a pressure measurement unit that measures the pressure applied to the tube portion based on the information stored in the database unit and the degree of expansion of the tube portion measured by the displacement sensor unit.

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