KR102051394B1 - Apparatus for tissue expansion and measuring method for volume change of breast using the same - Google Patents

Abstract

The present invention relates to a tissue expanding device and a method for measuring a chest volume using the same, in accordance with an aspect of the present invention, includes a dome for expanding tissue to be worn on a chest and an aspirator having a pump for generating sound pressure inside the dome. A chest volume measurement method using a tissue dilation device, wherein when the inside of the dome is the first set pressure, the pump is stopped and the dome is outside the dome until the inside of the dome reaches a second set pressure that is different from the first set pressure. A first step of introducing air; And a second step of calculating the chest volume based on the air flow rate introduced into the dome until the inside of the dome reaches the second set pressure.

Description

Apparatus for tissue expansion and measuring method for volume change of breast using the same}

The present invention relates to a dome for tissue expansion, an aspirator, and a tissue expansion device including the same, and a method for measuring a chest volume using the same.

BACKGROUND OF THE INVENTION In recent years, the field of plastic surgery for restoring intrinsic function or having a normal appearance through surgical surgery for congenital malformations and acquired trauma has been developed to general cosmetic surgery.

In particular, in recent years in the general cosmetic surgery, the cosmetic field has been extended to the areas such as breast enlargement / reduction, liposuction, penis enlargement in addition to facial molding.

In particular, breast augmentation and penis enlargement surgery are performed surgical operation to insert a implant such as silicone. However, cases of various side effects caused by implants such as silicone have been reported.

Therefore, a mechanism and method for expanding a woman's breast by methods other than surgically invasive surgery have been proposed.

An object of the present invention is to provide a tissue expansion dome, aspirator, and a tissue expansion device including the same, and a chest volume measuring method using the same.

In order to solve the above problems, according to an aspect of the present invention, the chest volume measurement method using a tissue expansion device including a tissue expansion dome to be worn on the chest and an aspirator having a pump for generating sound pressure inside the dome A first step of stopping the operation of the pump when the interior of the dome is at a first set pressure and introducing external air into the dome until the interior of the dome reaches a second set pressure that is different from the first set pressure; And a second step of calculating the chest volume based on the air flow rate introduced into the dome until the inside of the dome reaches the second set pressure.

Further, according to another aspect of the present invention, there is provided a tissue expansion device comprising a tissue expansion dome and an aspirator for generating a sound pressure inside the dome.

Here, the aspirator may be connected to a pump for generating a negative pressure inside the dome, a first flow line connecting the inlet port of the dome and the pump, a second flow line connecting the discharge port of the pump and the external atmosphere, and a first flow line. A control valve having a first port and a second port connected to a second flow line, a first pressure sensor and a second pressure sensor disposed at two different points on the line where external air enters the control valve, and a pump and regulation And a control unit for controlling the valve.

In addition, when the pump is operated and the control valve is closed, the inside of the dome reaches the first set pressure, when the pump stops and the control valve is opened, outside air is introduced into the dome, and the inside of the dome is higher than the first set pressure. Reaching a low second set pressure, the controller is arranged to perform a chest volume measurement mode for measuring a change in chest volume.

In addition, the control unit stops the operation of the pump when the inside of the dome is the first set pressure in the chest volume measurement mode, opens the control valve to introduce external air into the dome, and the inside of the dome is different from the first set pressure. By calculating the flow rate of the air introduced until the second set pressure is reached, the air volume introduced into the dome is calculated, and when the air volume is calculated a plurality of times, the chest is based on the difference in the air volume for each cycle. It is arranged to measure the change in volume.

As described above, the dome for tissue expansion, the aspirator, and the tissue expansion device including the same, and the chest volume measuring method using the same according to an embodiment of the present invention have the following effects.

By variously applying shape factors suitable for body characteristics to the contact area of the dome, the dome can be stably adhered to body tissues (for example, the chest), thereby effectively generating sound pressure inside the dome.

In addition, by having a structure in which the aspirator is detachably mounted to the dome, the usability of the wearer can be improved, and as the aspirator is mounted on the dome, the physical distance between the sound pressure source and the sound pressure generating space can be shortened. .

In addition, the change in the chest volume can be measured based on the air flow rate flowing into the dome. In addition, the device for measuring the chest volume may be configured separately from the aspirator, and such a device may be detachably mounted to the aspirator if necessary.

In addition, it is possible to prevent the generation of moisture in the canister in the aspirator during operation.

1 is a schematic diagram illustrating a tissue expansion device according to an embodiment of the present invention.
2 is a perspective view showing a tissue expansion device according to an embodiment of the present invention.
3 is a plan view showing a tissue expansion dome according to an embodiment of the present invention.
4 and 5 are views showing the air tube constituting the dome for tissue expansion according to an embodiment of the present invention.
6 is a perspective view of a state where a portion of the air tube is cut away.
7 is a partially enlarged view of FIG. 6.
8 is an exploded perspective view showing a tissue expansion device according to an embodiment of the present invention.
9 is a perspective view showing an aspirator associated with an embodiment of the present invention.
10 and 11 are configuration diagrams for showing an operating state of the suction device according to an embodiment of the present invention.
12 is an exploded perspective view of an aspirator associated with an embodiment of the present invention.
13 and 14 are perspective views showing some components of the aspirator of FIG. 12, respectively.
15 is a view for explaining an operation state of the air distribution member and the pump.
16 are perspective views illustrating some components of the aspirator of FIG. 12.
17 is a perspective view of an aspirator associated with an embodiment of the present invention.
18 is a sound pressure graph for explaining an operation state of the aspirator according to an embodiment of the present invention.
19 to 23 are block diagrams for explaining the volume measurement device.
24 is a schematic diagram illustrating another embodiment of a tissue expansion device.
25 and 26 are separated perspective views of a canister constituting an aspirator according to an embodiment of the present invention.
FIG. 27 is a cross-sectional view of each component of FIG. 25 coupled.

Hereinafter, a tissue expansion dome, an aspirator, and a tissue expansion device including the same, and a chest volume measuring method using the same according to an embodiment of the present invention will be described in detail with reference to the accompanying drawings.

In addition, irrespective of the reference numerals, the same or corresponding components will be given the same or similar reference numerals, and redundant description thereof will be omitted. For convenience of description, the size and shape of each component member may be exaggerated or reduced. Can be.

1 is a schematic diagram illustrating a tissue expansion device 10 according to an embodiment of the present invention.

Tissue expansion device 10 according to an embodiment of the present invention is a tissue expansion dome (100: 100-1, 100-2) for accommodating a part of the body of the wearer and the interior space (receiving portion) of the dome 100 ( 113, see FIG. 19), the aspirator 300 for generating a negative pressure. In addition, the inner space of the dome 100 and the aspirator 300 may be connected through the connection tube 200. The dome 100 may be provided as a pair of left and right chests of the wearer, and in the present invention, the right chest dome 100-1 and the left chest dome 100-2 may have left and right symmetrical shapes. have. Hereinafter, the dome 100 for tissue expansion will be described by taking the right chest dome 100-1 as an example. In addition, in Fig. 1, reference numeral I denotes an inner chest region, and reference numeral O denotes an outer chest region.

In this document, the term wearer's body tissue or body part region may be understood to mean any body part for which tissue expansion is desired, for example, the wearer's body tissue may be the wearer's chest.

The dome 100 includes a portion of the wearer's body, for example, a cap 110 surrounding the chest and a contact portion provided at an edge of the cap 110 to be in close contact with the wearer's body region.

The cap 110 may have an open shape toward the body region, for example, may have a hemispherical shape. The cap 110 has a vertex 111 positioned at the maximum height in contact with the body.

2 is a perspective view showing a tissue expansion device according to an embodiment of the present invention, Figure 3 is a plan view showing a tissue expansion dome 100-1 according to an embodiment of the present invention, Figures 4 and 5 2 is a diagram illustrating an air tube 120 constituting the tissue expansion dome 100-1 according to an embodiment of the present invention.

6 is a perspective view of a part of the air tube 120 cut away, and FIG. 7 is a partially enlarged view of FIG. 6.

Referring to FIG. 2, the tissue expansion dome 100-1 may include an accommodating part 113 covering a part of a wearer's body and a suction port 112 connected to the accommodating part so as to be able to move fluidly. It includes a cap 110 having. The cap 110 may be formed of various resin materials. For example, the cap 110 may be formed of at least one of polycarbonate (PC) resin and polyethylene (PE) resin.

In addition, the dome 100-1 is provided along the edge of the cap 110 so as to contact the wearer's body, and includes an air tube 120 filled with air therein.

In this embodiment, the contact portion of the dome 100-1 is the air tube 120. The air tube may have a sound pressure buffering effect, and has an effect of improving the adhesion of the dome. The air tube 120 may be formed of various materials. For example, the air tube 120 may be formed of at least one of polyvinyl chloride (PVC) resin and polyurethane (PU) resin.

The air tube 120 has a diameter D at least in some regions along the edge of the cap based on the vertex 111 of the cap 110.

In addition, the air tube 120 may have a first region 121 located in an upper region of the edge of the cap 110 and a second region located in a right region, based on the vertex 111 of the cap 110. 122), a third region 123 positioned in the lower region, and a fourth region 124 positioned in the left region. Referring to FIGS. 1 and 3, the second region 122 is in close contact with the inner chest area (central breast bone area) and the fourth is in close contact with the outer area of the chest.

At this time, the second region and the fourth region have an asymmetrical shape along the left and right directions with respect to the vertex 111 of the cap 110. The asymmetric shape takes into account the characteristics of the body tissue around the chest, and when the sound pressure is provided, the adhesion to the chest can be improved and the uniform sound pressure is applied to the entire chest area.

In addition, the air tube 120 may be provided differently from the interval between the second region 122 and the vertex 111 and the interval between the fourth region 124 and the vertex 111. In this case, a region far from the vertex 111 of the second region 122 and the fourth region 124 may be bent to have a predetermined curvature.

For example, in the case of the right chest dome 100-1, the second region 122 is an area close to the vertex 111, and the fourth region 124 is an area far from the vertex 111. Can be. In this case, the fourth region 124 may be bent to have a predetermined curvature. That is, the fourth region 124 positioned outside the chest O may be farther from the vertex than the second region 122 positioned inside the chest I, and may be bent to have a predetermined curvature.

Referring to FIG. 4, at least a portion of the second region 122 and the fourth region 124 close to the vertex 111 (in the case of the right chest dome, the second region 122) is formed in a straight line shape. Can be. When the second region 122 is formed in a straight shape, the position of the second region 122 of the dome 100-1 may be easily aligned with the central breast bone when worn.

3 and 4, the diameter of the second region 122 and the fourth region 124 is far from the vertex 111 (when the right chest dome is the fourth region 124). It may be formed to be 1.5 to 2.5 times larger than the diameter of the region close to the 111 (in the case of the right chest dome, the second region 122).

Referring to FIG. 3, the thickness of the second region 122 and the fourth region 124 that is far from the vertex 111 (when the right chest dome is the fourth region 124) is the vertex 111. It may be formed to be 1.5 to 2.5 times larger than the thickness t1> t2 of the region close to the distance (in the case of the right chest dome, the second region 122).

Referring to FIG. 4, the width of the second region 122 and the fourth region 124 that is far from the vertex 111 (when the right chest dome is the fourth region 124) is the vertex ( It may be formed to be 1.5 to 2.5 times larger than the width w1> w2 of the region (in the case of the right chest dome, the second chest 122) close to the 111.

Referring to FIG. 5, a region far from the vertex 111 (the fourth region 124 when the right chest dome is located) of the second region 122 and the fourth region 124 is close to the vertex. (In the case of the right chest dome, the second region 122 is projected more toward the wearer's body side.

In addition, the first region 121 and the third region 123 may be bent to have different curvatures, and the curvature of the first region 121 may be greater than the curvature of the third region 123. By designing the curvature difference, the curvature of the upper chest and the lower chest of the wearer may correspond to the difference in curvature.

In addition, the curvature of the second region 122 and the fourth region 124 far from the vertex 111 (when the right chest dome, the fourth region 124) may be larger than the curvature of the first region. have.

6 and 7, the air tube 120 may include a space 127 into which air is injected and an inflatable membrane 126 defining the space 127.

At this time, the air tube 120 is based on the vertex 111 of the cap 110, the diameter of the space portion 127 and the thickness (t) of the membrane 126 in at least a portion along the edge of the cap 110. At least one of may vary.

As such, as at least one of the diameter of the space portion 127 and the thickness t of the membrane 126 is changed, as described with reference to FIGS. 3 to 5, the diameter D of the air tube may vary. .

For example, an area far from the vertex 111 of the second region 122 and the fourth region 124 (in the case of the right chest dome, the fourth region 124) is close to the vertex 111. The diameter and film thickness of the injection space may be larger than that of the region (in the case of the right chest dome, the second region 122).

Alternatively, the diameter D of the air tube 120 may vary depending on the thickness of the membrane 126 in a state in which the diameter of the space 127 is the same.

In addition, the air tube 120 is provided to expand in accordance with the air injection, the amount of air injected therein may be 60 to 80% of the maximum air capacity. By injecting less air than the maximum air capacity, the adhesion and the sound pressure buffering effect can be improved.

In addition, in order to improve the adhesion, an embossed or intaglio pattern may be formed on the surface of the film 126 to increase a contact area such as an uneven shape.

In addition, in order to improve the adhesion, an adhesive layer having excellent biocompatibility and having a predetermined adhesive force may be further formed on the surface of the film 126.

8 is an exploded perspective view showing a tissue expansion device according to an embodiment of the present invention.

The tissue expansion device includes a tissue expansion dome 100 and an aspirator 300 for generating sound pressure inside the dome 100.

As described above, the tissue expansion dome 100 may be connected to the receptacle 113 and the receptacle 113 covering the part of the body of the wearer so as to be fluidly movable and connected to the aspirator 300. 112 is provided along the edge of the cap 110 to contact the body of the wearer 110 and the wearer, it may include an air tube 120 is filled with air therein. In addition, the diameter of the air tube 120 may vary in at least some areas along the edge of the cap 110, based on the vertex 111 of the cap 110.

On the other hand, the cap 110 may have a mounting portion 130 for the suction unit 300 is detachably mounted. For example, the mounting unit 130 may be a ring-shaped mounting rib 131. In this case, the aforementioned suction port 112 may be provided to be positioned in the mounting unit 130.

Cap 110 and aspirator 300 may be coupled by a magnetic force through a magnet. To this end, the mounting portion 130 and the suction unit 300 of the cap 110 may be provided with one or more magnets, respectively.

In addition, the mounting portion may be at least partially recessed into the cap. According to this structure, the aspirator 300 may be partially recessed into the cap 110, so that the area protruding outside the cap 110 may be reduced, thereby reducing the overall volume of the tissue expansion device.

9 is a perspective view showing a suction unit 300 according to an embodiment of the present invention, Figures 10 and 11 are configuration diagrams for showing an operating state of the suction unit according to an embodiment of the present invention.

12 is an exploded perspective view of an aspirator 300 according to an embodiment of the present invention, and FIGS. 13 and 14 are perspective views illustrating some components of the aspirator of FIG. 12, respectively.

In addition, Figure 15 is a view for explaining an operation state of the air distribution member and the pump, Figure 16 is a perspective view showing some components of the aspirator of Figure 12, Figure 17 is a view of the aspirator according to an embodiment of the present invention Perspective view.

Aspirator 300 in accordance with one embodiment of the present invention includes a housing 301 having an inlet 302 and an outlet 303. The inlet 302 is fluidly connected to the suction port 112 of the cap 110 described above. In such a structure, the internal air of the cap 110 is sucked into the aspirator 300 through the inlet 302 through the suction port 112. Meanwhile, the canister 500 may be disposed on the inlet 302 side, and in the air flow process, the inlet 302 of the housing 301 may mean an inlet of the canister 500.

In addition, the aspirator 300 is disposed in the housing 301 and includes a pump 410 for sucking air introduced through the inlet 302.

In addition, the aspirator 300 connects the first flow line 701 connecting the inlet 302 and the inlet port 411 of the pump 410 and the outlet port 412 of the pump 410 and the external atmosphere. Second flow line 702. In this case, as the second flow line 702 is opened to the outside, the second flow line 702 connects the discharge port 412 of the pump 410 and the external atmosphere.

The aspirator 300 also includes a control valve 430 disposed in the housing 301 and having a first port 431 connected to the first flow line and a second port 432 connected to the second flow line. . The control valve 430 has a flow path connecting the first port 431 and the second port 432 therein, and is provided to open or close the flow path.

Meanwhile, reference numeral 703 denotes a third flow line connecting the first flow line 701 and the first port 431 of the control valve 430, and reference numeral 704 denotes a second flow line 702 and A fourth flow line connecting the second port 432 of the control valve 430 is shown.

In addition, the aspirator 300 is disposed in the housing 301 and includes a battery 495 for supplying power to the pump 410, and the aspirator 300 includes a pump 410 and a control valve 430. Control unit 490 (also referred to as "first control unit" in this document) for controlling each.

Referring to FIG. 15, the suction unit 300 may further include an air distribution member 420 mounted to the pump 410. The air distribution member 420 forms at least a portion of the first flow line 701 and at least a portion of the inflow passage 421 and the second flow line 702 connected to the inflow port 411 of the pump 410. It forms a part and has an outflow flow path 422 connected with the discharge port 412 of the pump 410.

At this time, the control valve 430 is mounted to the air distribution member 420 so that the first port 431 is connected to the inflow passage 421, and the second port 432 is connected to the outlet passage 422. On the other hand, the air distribution member 420 and the control valve 430 is coupled via a dustproof mount 450 of an elastic material such as rubber. For example, the control valve 420 may be mounted to the air distribution member 420 through a binding member such as 460.

10 and 15, when the pump 410 is operated and the control valve 430 is closed, air is sucked to the pump 410 along the inflow passage of the air distribution member 421 through the inlet 302. The air is discharged to the outside along the outflow passage 422. In this case, sound pressure is generated in the interior 113 of the dome 100. Specifically, when the aspirator 300 operates in the negative pressure mode, by the controller 490, the pump 410 is operated, the control valve 430 is closed, and the air 113 in the dome 100 is sucked. As it is sucked into the 300, a negative pressure is generated inside the dome.

Meanwhile, referring to FIGS. 11 and 15, when the pump 410 is stopped and the control valve 430 is opened, outside air flows into the outlet 303 of the housing, and the control valve along the outlet line 422 ( After entering the second port 432 of 430, passing through the first port 431, it is possible to move to the inlet side along the inflow passage 421. In this case, as the outside air flows into the dome 100 inside 113, the negative pressure inside the dome 100 is released based on the amount of air introduced.

As described above, the controller 490 may control the sound pressure inside the dome by controlling the operation of the pump 410 and the on / off of the control valve 430.

18 is a sound pressure graph for explaining an operation state of the aspirator according to an embodiment of the present invention. For example, as illustrated in FIG. 18, the controller may perform a cycle mode that continuously changes the sound pressure inside the dome between two set sound pressures.

Referring to FIG. 15, a flow hole 424 is provided in the inflow passage 421 of the air distribution member 420, and the flow hole 424 has a flow in a direction toward the inflow port 411 of the pump 410. A check valve may be provided to allow only.

In detail, the check valve opens the flow hole 424 when the pump 410 operates, opens the inflow passage 421 toward the inlet port 411 of the pump, and when the pump 410 does not operate, The flow hole 424 is sealed to operate to close the inflow passage 421.

In one embodiment, the check valve, the shaft 423 inserted into the flow hole 424, is mounted to the shaft 423, the sealing member 425 and the pump 410 in contact with the flow hole 424 is operated As such, the shaft 423 may include an elastic member 426 (for example, a spring) provided to be compressed when the shaft 423 moves toward the pump 410. Here, the pump is operated, by the air pressure flowing into the inflow passage 421, when the shaft 423 moves to the pump 410 side, the sealing member 425 is separated from the flow hole 424, accordingly, The flow hole 424 is opened.

In addition, the suction unit 300 connects the outlet flow path 422 of the air distribution member and the discharge port 303 of the housing 301, and forms a discharge pipe 470 that forms at least part of the second flow line 702. It further includes.

In addition, the aspirator 300 may further include a dustproof member 440 mounted to surround the pump 410.

In addition, the aspirator 300 is disposed in the housing 301 and has a flow path connecting the inlet 302 and the inflow passage 421 of the air distribution member 420, and the dome 100 connected to the inlet 302. ) May further include a sound pressure detector 480 (in this document, also referred to as a "pressure sensor") for measuring the sound pressure of the inner 113. For example, the pressure sensor 480 may be provided to measure the sound pressure inside the dome by measuring the amount of air inside the dome.

The housing 301 includes a main case 310 in which a pump, an air distribution member, a control valve, a discharge pipe, a sound pressure sensor 480, a battery 495, and a controller 490 are disposed. . The main case 310 has a structure in which the canister 500 is mounted on the bottom surface and the top surface is opened.

In addition, the housing 310 includes an upper case 320 covering an open area of the main case 310. In addition, it may further include a transparent decor case 330 mounted on the upper case 320.

In addition, the housing 310 includes a plurality of side panels 340 and 340 ′ mounted to the side of the main case 310.

In addition, the controller 490 includes a connection terminal for electrically connecting with the volume measuring device described below and a charging terminal for charging the battery. At this time, the main case 310 has a first hole 311 and a second hole 312 in order to expose the connection terminal and the charging terminal to the outside of the housing 301, respectively. In addition, the main case 310 has a third hole 313 which performs the outlet 303 of the housing 301.

In addition, the side panels 430 mounted on the main case 310 to surround the first to third holes 311, 312, and 313 expose the first to third holes 311, 312, and 313 to the outside, respectively. First through third exposure holes 341, 342, and 343.

In addition, the cover member 345 may be detachably mounted on the side panel 340 to surround the first to third exposure holes 341, 342, and 343. However, the cover member 345 may open at least a portion of the third exposure hole 343 corresponding to the third hole 313 which performs the outlet 303 of the housing 301 to the outside. For example, it may be provided as a mesh area.

On the other hand, the main case 310 is equipped with a power switch 360 for turning on (On) / off (Off) the aspirator 300, the power switch 360 is the main case (3) via the mounting bracket (361). 310 may be mounted. The main case 310 is provided with a fourth hole 314 open to electrically connect the power button 360 and the controller and a fifth hole 315 to which the mounting bracket 361 is fixed.

In addition, in this embodiment, the tissue expansion device includes a tissue expansion dome 100 and a suction unit 300 detachably mounted to the dome 100.

In addition, as described above, the dome 100 may include a receiving part 113 covering a part of the body of the wearer, a suction port 112 connected to the fluid part in fluid communication, and a mounting part surrounding the suction port 112. 130 and a contact provided along an edge of the cap 110 to contact the wearer's body.

Meanwhile, one or more magnets 350 may be disposed in the mounting unit 130 side of the cap 110 and in the housing 301 of the aspirator 300.

19 to 23 are block diagrams for explaining the volume measurement device, Figure 24 is a schematic diagram showing another embodiment of the tissue expansion device.

According to this embodiment, the chest volume can be measured through the aspirator of the above-described structure and the tissue expansion device including the same.

Chest volume measurement method according to an embodiment of the present invention, the tissue expansion dome 100 worn on the chest and the suction device 300 having a pump 410 for generating a negative pressure inside the dome 100; It relates to a chest volume measurement method using the tissue expansion device 10 to.

In the chest volume measuring method, when the inside 113 of the dome 100 is the first set pressure, the operation of the pump 410 is stopped, and the inside 113 of the dome 100 is different from the first set pressure. And a first step of introducing outside air into the dome 100 inside 113 until the set pressure is reached. The first set pressure may have a magnitude of the negative pressure, for example, −40 mmHg to −50 mmHg.

As described with reference to FIG. 11, the first step may be performed by controlling the pump 410 and the control valve 430, respectively. In detail, by stopping the pump 410 and opening the control valve 430, external air may be introduced into the dome to release a predetermined amount of the negative pressure at the first set pressure.

In addition, the chest volume measuring method may include a second step of calculating a chest volume based on an air flow rate introduced into the dome 100 inside 113 until the inside of the dome reaches a second set pressure. The second set pressure may have a magnitude of the negative pressure, for example, −10 mmHg. That is, the magnitude of the sound pressure of the first set pressure may be greater than the magnitude of the sound pressure of the first set pressure.

Referring to FIG. 20, the second step includes measuring differential pressures at two different points 631 and 635 on the inflow passage 630 in the process of introducing external air into the dome. And determining the flow rate by integrating the flow rate over time and calculating the volume of air introduced into the dome by integrating the flow rate over time.

In summary, in the state where the inside of the dome is maintained at the negative pressure of the first set pressure, the pump driving is stopped, the control valve 430 is opened, and the external air until the dome internal pressure reaches the negative pressure of the second set pressure. Is introduced into the dome, and the volume can be calculated using the flow rate measured while the outside air is introduced into the dome.

In the venturi tube structure as shown in FIG. 20, the differential pressure between the first point (for example, reference numeral 631) and the second point (for example, reference numeral 635) having a large flow path cross-section is sequentially measured along the direction in which the outside air is introduced. Can be.

Applying the continuous equation and the Bernoulli equation, the equations [1] and [2] are shown below.

[Formula 1]

[Formula 2]

In general formulas 1 and 2, Q is the flow rate, P ₁ is the pressure at the first point, P ₂ is the pressure at the second point, v ₁ is the flow rate at the first point, v ₂ is the flow rate at the second point , A ₁ represents the cross-sectional area at the first position, and A ₂ represents the cross-sectional area at the second position.

[Formula 1] and [Formula 2] can be summarized as [Formula 3] below by the formula for the flow rate (Q).

[Formula 3]

Multiplying the flow rate value (C) of the venturi tube by the flow rate value calculated by [Equation 3] gives the following [Equation 4].

[Formula 4]

In Equation 4, C _venturi is the venturi tube flow _coefficient , D _narrow is the diameter of the first point, D _wide is the diameter of the second point.

The volume can also be calculated using the sum of the flow rates.

In the above equation, the calculated volume sum Q _t and the change in pressure of the dome may be used to calculate the volume Vol.

[Formula 5]

[Formula 6]

For example, an equation for calculating a volume using a cumulative sum of differential pressures (differentials) may be used by constructing a mathematical model as shown in [Formula 7] below based on actual measured data.

V = P * (-0.19086)-522.81

In general formula (7), P represents only the numerical part without units in the cumulative sum of the differential pressures (Pa) measured in units of 50 ms, and V represents the result calculated according to the formula on the right based on the equal sign. 7 is configured to be used in volume by adding the volume unit cc to the result value (V).

In addition, two different points 631 and 635 may have different flow cross sections of air in the inlet line 630.

In addition, the pressure sensors P1 and P2 may be provided at two different points.

In addition, the step of determining the flow rate from the differential pressure may be determined based on the differential pressure-flow rate table generated in advance using the flow rate sensor.

In addition, the first set pressure may be larger in magnitude than the second set pressure, and the second set pressure may not be zero.

In addition, the chest volume measuring method may include performing a first step and a second step a plurality of times, and a first air volume introduced into the dome calculated in the first round and a second air introduced into the dome calculated in the second round. Measuring the change in chest volume based on the volume.

That is, according to the use state of the wearer, the first step and the second step is performed on the first day (1st time), the first air volume is measured, and the first and second steps are performed on the second day (the second time). After performing again, the second air volume is measured, and the change in the chest volume can be measured by comparing the second air volume with the first air volume.

In this case, the chest volume measuring method may include determining that the chest volume is increased when the second air volume measured in the second round is smaller than the first air volume measured in the first round.

In addition, in the first step, as described in FIG. 10, in the state where the dome is worn on the wearer's chest, the negative pressure inside the dome is generated (the control valve is closed) up to the first set pressure, and the inside of the dome is the first. It may include the step of stopping the operation of the pump when the set pressure is reached.

In summary, the chest volume measuring method stops the operation of the pump when the inside of the dome is the first set pressure and introduces outside air into the dome, while the inside of the dome reaches a second set pressure different from the first set pressure. The first and the first steps of calculating the air volume introduced into the dome by calculating the flow rate of the air introduced into the dome are repeated two or more times, and based on the difference in the air volume for each cycle, Measuring the change.

Meanwhile, the chest volume measuring method as described above may be configured to measure the differential pressure on the second flow line 702 of the aspirator 300 as described above, so that the control unit measures the chest volume. For example, on the discharge pipe 470 of the second flow line, the differential pressure may be configured to be measured. In this case, two different points 631 and 635 of the discharge pipe 470 may have different flow cross sections of air, and two different points may be provided with pressure sensors P1 and P2, respectively. .

Specifically, the tissue expansion device having a chest volume measurement function includes a tissue expansion dome 100 and an aspirator 300 for generating sound pressure inside the dome 100.

As described above, the aspirator 300 includes a pump 410 for generating a negative pressure inside the dome, a first flow line 701 connecting the inlet port of the dome and the pump, a discharge port of the pump, and an external atmosphere. A control valve 430 having a second flow line 702 to connect, a first port connected to the first flow line and a second port connected to the second flow line, and a line through which external air flows into the control valve 430 ( A first pressure sensor P1 and a second pressure sensor P2 disposed at two different points on the 630, and a controller 490 for controlling the pump and the control valve.

As shown in FIG. 10, when the pump 410 is operated and the control valve 430 is closed, the inside of the dome reaches the first set pressure, and as shown in FIG. 11, the pump 410 is stopped and the control valve 430. When is opened, the outside air is introduced into the dome 100, the inside of the dome reaches a second set pressure lower than the first set pressure.

In addition, the controller 490 is provided to perform a chest volume measurement mode for measuring a change in the chest volume.

Here, when the inside of the dome is the first set pressure, the controller 490 stops the operation of the pump when the inside of the dome is the first set pressure, opens the control valve to introduce external air into the dome, and the inside of the dome is first set. By calculating the flow rate of the air introduced until the second set pressure different from the pressure is reached, the air volume introduced into the dome is calculated, and when the air volume is calculated a plurality of times, the difference between the air volumes for each cycle It can be arranged to measure the change in chest volume based on.

The controller 490 measures the differential pressure through the first pressure sensor P1 and the second pressure sensor P2, determines the flow rate from the differential pressure, calculates the flow rate by integrating the flow rate with time, and calculates the flow rate. It can be arranged to calculate the volume of air by integrating with respect to.

In addition, as described above, the two different points may be different points in the flow cross section of air in the flow line.

Referring to FIG. 24, the controller 490 may be provided to transmit chest volume change information to the external terminal 20. Specifically, the aspirator 300 may be provided to enable wireless communication (eg, Wi-Fi, Bluetooth, etc.) with the external terminal 20. The terminal 20 may include a smartphone, a notebook or a computer.

Unlike this, as illustrated in FIGS. 21 to 23, a volume measuring device 600 capable of measuring a differential pressure is separately configured, and the volume measuring device 600 may be separated from the outlet 303 of the aspirator 300. It can also be configured to be connected to.

According to one embodiment of the invention, the volume measuring device 600 is mounted to the tissue expansion device 10 including a suction unit 300 for generating a sound pressure inside the dome, the volume measuring device 600, the external And a housing 601 having an inlet 610 into which air is introduced and an outlet 620 for supplying external air to the aspirator 300.

In addition, the housing 601 may be detachably mounted to the aspirator 300 such that the outlet is fluidly connected to the aspirator 300.

In detail, the housing 601 may be mounted to the side panel 340 of the suction unit 300 such that the outlet 620 is connected to the third exposure hole 343 of the side panel 340 described above.

In this structure, the outside air introduced into the inlet 610 of the volume measuring device 600 may be moved to the discharge pipe 470 through the outlet 303 of the aspirator 300.

In addition, the volume measuring device 600 has two different points 631 and 635 among the flow line 630 and the flow line 630 connecting the inlet 610 and the outlet 620 in the housing 601. First and second pressure sensors (P1, P2) provided in the); And a controller 660 (also referred to herein as a “second controller”) for outputting pressure information measured from the first and second pressure sensors P1 and P2 to the aspirator 300. Here, the pressure information may include differential pressures of two different points measured from the first and second pressure sensors P1 and P2, respectively.

Also, two different points may be points at which the flow cross section of air in the flow line 630 is different.

In addition, the volume measuring device 600 may further include a power port 640 for supplying power to the pressure sensor. In this case, the power port 640 may be provided to be connected to the suction unit 300, and specifically, may be provided to be connected to the connection terminal of the suction unit 300.

In addition, the control unit 660 may further include a data port 670 for outputting the differential pressure data to the aspirator 300, the data port 670 may be provided to be connected to the aspirator 300. .

For example, the power port 640 and the data port 670 may be composed of a single output terminal 680, the output terminal 680 may be drawn out of the housing 601 through a cable. have. The output terminal 680 is provided to be connected to the connection terminal of the aspirator described above.

That is, the volume measuring device 600 may be mounted on the aspirator 300 as necessary to perform the chest volume measurement mode, thereby enabling the miniaturization and slimming of the aspirator 300.

In addition, the volume measuring device 600 is supplied with power from the aspirator 300, only measures the differential pressure, and transfers the measured differential pressure data to the aspirator 300, so that the chest volume measurement is performed in the aspirator 300 The chest volume device 600 can be made compact.

In addition, the tissue expansion device 10 according to another embodiment of the present invention is a dome 100 worn on the wearer's body tissue, the aspirator 300 and the aspirator 300 for generating a sound pressure inside the dome 100 And a volume measuring device 600 for measuring the volume of body tissue (eg, the chest) received inside the dome.

Hereinafter, a structure in which the functions of the aspirator 300 and the volume measuring device 600 are separated will be described in detail.

The aspirator 300 includes a pump for generating negative pressure inside the dome, a first flow line connecting the inlet port of the dome and the pump, a second flow line connecting the discharge port of the pump and the external atmosphere, and a first flow line. And a control valve having a first port connected to the second port and a second port connected to the second flow line, and a first control unit for controlling the pump and the control valve, respectively.

In addition, the volume measuring device may include an inlet through which external air is introduced, an outlet for supplying external air to a second flow line of the aspirator, a housing having an inlet and an outlet, a flow line connecting the inlet and the outlet within the housing, and a flow. And a second control unit for outputting a differential pressure measured from the first and second pressure sensors and the first and second pressure sensors provided at two different points of the line to the aspirator.

At this time, when the pump is operated and the control valve is closed, the dome inside reaches the first set pressure, and when the pump stops and the control valve is opened, outside air flows into the dome through the volume measuring device, A second set pressure is reached which is lower than the first set pressure.

In addition, the first control unit 490 is provided to perform a chest volume measurement mode for measuring a change in the chest volume, and when the volume measuring device is mounted on the aspirator, the first control unit is configured in the dome interior in the chest volume measurement mode. At 1 set pressure, the flow rate of the air introduced through the volumetric measuring device is stopped until the inside of the dome reaches a second set pressure which is different from the first set pressure while stopping the pump operation and introducing external air into the dome. Is calculated to calculate the air volume introduced into the dome, and when the air volume is calculated a plurality of times, it is provided to measure the change in the chest volume based on the difference in air volume for each cycle.

In addition, the first control unit 490 is configured to determine the flow rate from the differential pressure transmitted from the second control unit 660, calculate the flow rate by integrating the flow rate with time, and calculate the air volume by integrating the flow rate with time. do. Further, the flow rate can be determined based on the pre-stored differential pressure-flow rate table.

In addition, as described above, the two different points may be different points in the flow cross section of the air in the discharge line.

In addition, as described above, the volume measurement device 600 may include an output terminal 680 electrically connected to the battery 495 of the suction unit 300.

25 and 26 are exploded perspective views of a canister 500 constituting an aspirator according to an embodiment of the present invention, and FIG. 27 is a cross-sectional view of the components of FIG.

In this embodiment, the tissue expansion device is mounted to a dome and a dome for receiving the wearer's body tissue, and includes an aspirator for generating sound pressure inside the dome.

At this time, the aspirator 300 is a housing 301 having an inlet 302 and an outlet 303 connected to the inside of the dome, a pump 410 disposed in the housing 301 and for sucking air in the dome through the inlet; A canister 600 mounted to the inlet 302 side of the housing 301.

The canister 600 has a suction port connected to the inside of the dome, a discharge port connected to the inlet port, and a flow path F connecting the suction port and the discharge port.

Referring to FIG. 27, the flow path F connects a plurality of first sections and two adjacent first sections provided so that air flows in parallel with the direction of the central axis of the inlet port, and the air is radiused based on the central axis of the inlet port. And a second section provided to flow in the direction.

In addition, the second section may be provided so that air flows in a predetermined rotational direction with respect to the central axis of the intake port.

In addition, the suction port and the discharge port of the canister may be provided to be coaxially located.

Specifically, the canister 600 includes a suction member 510 which forms a suction port and is formed of an elastic material, and a lower case 520 on which the suction member 510 is mounted. The canister 600 has a discharge port, is mounted on the lower case 520 to form a predetermined flow space, the upper case 550, and disposed in the flow space, the flow space is a plurality of first section and second section Partition member 530 is provided to partition into. In addition, the canister 600 includes a filter 540 disposed between the partition member 530 and the upper case 550.

As described with reference to FIG. 1, unlike the structure in which the dome and the aspirator are far away from each other through the connecting tube, when the aspirator is detachably mounted on the dome, a passage connecting the aspirator inside the dome is shortened, and thus moisture may occur. have.

However, as in the canister 600 according to the present embodiment, when the flow path F is formed, moisture can be prevented.

In detail, the lower case 520 may have a plurality of first flow guides 521 concentrically arranged on the first surface facing the upper case 530 and having different diameters in a ring shape. In addition, the partition member 530 may have a second flow guide 531 positioned between two adjacent first flow guides 521 on a first surface facing the lower case.

Here, the first flow guide may have a height that does not contact the partition member, and the second flow guide may have a height that does not contact the lower case.

In this structure, the space between the first flow guide 521 and the second flow guide 531 forms a first section, and the space between the second flow guide 531 and the first surface of the lower case 520 is first defined. Two sections can be formed.

In addition, the partition member 530 may be provided with a plurality of spacers 532 and 533 supporting the filter on the second surface opposite to the first surface. The plurality of spacers 532 and 533 may be arranged to be spaced apart at predetermined intervals along the radial direction and the circumferential direction, respectively.

The space between the second surface of the partition member 530 and the filter 540 is connected to the discharge port of the upper case 550.

In addition, in order to absorb moisture, superabsorbent polymer particles (SAP) may be disposed in the flow space.

In addition, the canister 600 may be mounted to the discharge port side of the upper case 550, and may include a sealing cap 560 in contact with the inlet side of the housing 301 of the aspirator 300.

In this case, a ring-shaped inflow guide 316 is provided on the bottom surface of the main case 310 of the suction unit 300, and the discharge port of the upper case 550 is disposed in the inflow guide 316, and the sealing cap 560 is provided. Is in close contact with the inner circumferential surface of the inflow guide 316.

In addition, the discharge port of the upper case 550 is connected to the flow path of the negative pressure detecting unit 380 so as to be able to move fluid.

Preferred embodiments of the present invention described above are disclosed for purposes of illustration, and those skilled in the art having various ordinary knowledge of the present invention may make various modifications, changes, and additions within the spirit and scope of the present invention. And additions should be considered to be within the scope of the following claims.

10: tissue expansion device
20: terminal
100: tissue dome
110: cap
120: air tube
200: connecting tube
300: aspirator
500: canister
600: volumetric measuring device

Claims (15)

A chest volume measurement method using a tissue expansion device including a tissue expansion dome worn on a chest and an aspirator having a pump for generating sound pressure inside the dome,
When the inside of the dome is the first set pressure, stopping the operation of the pump and introducing external air into the dome until the inside of the dome reaches a second set pressure that is different from the first set pressure; And
And a second step of calculating the chest volume based on the air flow rate introduced into the dome until the interior of the dome reaches the second set pressure. The method of claim 1, wherein the second step is
Measuring differential pressures at two different points on the inflow passage in the process of introducing external air into the dome;
Determining a flow rate from the differential pressure;
Calculating a flow rate by integrating the flow rate over time; And
Integrating the flow rate over time to calculate the volume of air introduced into the dome. The method of claim 2,
Two different points measure the chest volume with different flow cross sections of air in the inlet line. The method of claim 2,
A chest volume measurement method, in which two different points are each provided with a pressure sensor. The method of claim 2, wherein determining the flow rate from the differential pressure comprises:
Chest volume measurement method, determined based on a pre-generated differential pressure-velocity table using a flow rate sensor The method of claim 1,
And the first set pressure is greater than the second set pressure. The method of claim 6,
The second set pressure is nonzero, the chest volume measuring method. The method of claim 2,
Performing the first and second steps a plurality of times; And
And measuring a change in the chest volume based on the first air volume introduced into the dome calculated in the first round and the second air volume introduced into the dome calculated in the second round. The method of claim 8,
And when the second air volume measured in the second round is smaller than the first air volume measured in the first round, determining that the chest volume has increased. The method of claim 1, wherein the first step is
A method of measuring a chest volume in which a dome is worn on a wearer's chest, generating a sound pressure inside the dome up to a first set pressure, and stopping the pump when the dome inside reaches the first set pressure. A chest volume measurement method using a tissue expansion device including a tissue expansion dome worn on a chest and an aspirator having a pump for generating sound pressure inside the dome,
When the inside of the dome is the first set pressure, the operation of the pump is stopped and the outside air is introduced into the dome, and the flow rate of the introduced air is increased until the inside of the dome reaches the second set pressure which is different from the first set pressure. Calculating a volume of air flowing into the dome;
Repeating the first step two or more times, and measuring the change in the chest volume based on the difference in the respective air volumes. Tissue dome; And
A suction device for generating a negative pressure inside the dome,
The aspirator includes a pump for generating a negative pressure inside the dome, a first flow line connecting the inlet port of the dome and the pump, a second flow line connecting the discharge port of the pump and the external atmosphere, and a first flow line connected to the first flow line. A control valve having a first port and a second port connected to a second flow line, a first pressure sensor and a second pressure sensor disposed at two different points on the line where external air enters the control valve, and a pump and a control valve It includes a control unit for controlling the,
When the pump is running and the control valve is closed, the inside of the dome reaches the first set pressure, when the pump stops and the control valve opens, outside air is introduced into the dome, and the inside of the dome is lower than the first set pressure. 2 reaches the set pressure,
The control unit is arranged to perform a chest volume measurement mode for measuring a change in chest volume.
The control unit stops the operation of the pump when the inside of the dome is the first set pressure in the chest volume measurement mode, and opens the control valve to introduce external air into the dome, while the inside of the dome is different from the first set pressure. By calculating the flow rate of the air introduced until the set pressure is reached, the air volume flowing into the dome is calculated, and when the air volume is calculated a plurality of times, the volume of the chest is based on the difference of the air volume for each cycle. Tissue expansion device that measures change. The method of claim 12,
The controller measures the differential pressure through the first pressure sensor and the second pressure sensor, determines the flow rate from the differential pressure, calculates the flow rate by integrating the flow rate over time, and calculates the air volume by integrating the flow rate over time. Tissue expansion device in place. The method of claim 12,
Two different points are points where the flow cross section of air in the flow line is different. The method of claim 12,
The controller is a tissue expansion device provided to transmit chest volume change information to an external terminal.

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