An in vitro removable intelligent airbag blocking belt

Abstract

The present invention belongs to the technical field of medical devices, and specifically relates to an in vitro removable intelligent airbag blocking belt, comprising a blocking belt body and a ventilation hose connected to each other, an airbag connected to the ventilation hose is arranged on one side of the blocking belt body, the airbag comprises a locking airbag and a pressure regulating airbag, the locking airbag protrudes from the blocking belt body, and a two-way airflow valve is arranged between the locking airbag and the ventilation hose, a locking through hole matching the locking airbag is also arranged on the blocking belt body, the locking airbag and the locking through hole are respectively arranged on the left and right sides of the pressure regulating airbag, the locking airbag before inflation can pass through the locking through hole, and the locking airbag passing through the locking through hole can be locked in the locking through hole by inflation. The present invention has a reasonable structure and is easy to use. It can not only effectively control the blood flow velocity of the portal vein and artery in the liver, but also will not cause damage to the liver, is not easy to slip, and has easy pressure control, which is relatively safe.

Description

Technical Field

[0001] The invention belongs to the technical field of medical devices, and in particular relates to an in vitro removable intelligent airbag blocking belt. Background Art

[0002] Surgery is a possible way to cure liver malignancies, but insufficient future liver remnant (FLR) volume after surgery may lead to liver failure. Some studies have shown that FLR must be at least 30% (common liver cancer patients) or 40% (chronic liver disease patients) of the total liver volume (TLV) to tolerate surgery. However, in patients with giant liver tumors or those who require large liver resections, the expected FLR volume is often difficult to meet. Inducing the growth of the retained liver volume in a short period of time in order to obtain a sufficiently safe FLR volume has been a hot topic in the development of liver surgery in recent years. Among them, the two-step hepatectomy (associating liver partitioning and portal vein ligation for staged hepatectomy, ALPPS) can rapidly increase the FLR volume in a relatively short period of time, and has created surgical opportunities for some patients in clinical practice. This patent is mainly used for the ligation of the portal vein and artery in the two-step hepatectomy, which plays a role in blocking blood flow and regulating blood flow velocity. Summary of the invention

[0003] The purpose of the present invention is to address the problems of unsatisfactory hemostasis effect and difficulty in adjusting the tightness of the portal vein and artery in the current two-step hepatectomy, and to design an airbag blocking band with a simple structure, easy operation, convenient adjustment and not easy to fall off, and which can be directly removed from the patient's body after vacuuming without the need for a secondary operation.

[0004] To achieve the above-mentioned purpose, the technical solution adopted by the present invention is: an in vitro removable intelligent airbag blocking belt, comprising a blocking belt body and a ventilation hose that are connected to each other, an airbag connected to the ventilation hose is provided on one side of the blocking belt body, the airbag comprises a locking airbag and a pressure-regulating airbag, the locking airbag protrudes from the blocking belt body, and a two-way airflow valve is provided between the locking airbag and the ventilation hose, and a locking opening matching the locking airbag is also provided on the blocking belt body.

[0005] Preferably, the end of the ventilation hose away from the blocking belt body is provided with a ventilation interface connected to the intelligent air pump, and the ventilation interface includes an air inlet, an air outlet and a locking buckle.

[0006] Preferably, the intelligent air pump is provided with an inflation port matching the air inlet, an air extraction port matching the air outlet, and a locking piece matching the locking buckle.

[0007] Preferably, the intelligent air pump also has a display interface and a button operation area.

[0008] Preferably, the pressure-regulating airbag comprises a first airbag and a second airbag which are arranged continuously.

[0009] Preferably, the locking airbag and the locking opening are respectively arranged on the left and right sides of the pressure regulating airbag.

[0010] Preferably, the shape of the locking opening is adapted to the shape of the locking airbag before inflation, the locking airbag before inflation can pass through the locking opening, and the locking airbag passing through the locking opening can be locked in the locking opening by inflation.

[0011] Preferably, the two-way airflow valve includes a blocking plate, an air blocking sheet and a sheet fixing rod, the blocking plates are arranged at both ends of the airflow channel, the sheet fixing rod is arranged in the middle of the airflow channel, and the air blocking sheets are rotatably connected on both sides of the sheet fixing rod, and the two air blocking sheets are arranged in a "V" shape, and the two blocking plates are respectively arranged under the two air blocking sheets.

[0012] After adopting the above technical solution, the intelligent airbag blocking belt that can be removed from the body provided by the present invention has the following beneficial effects:

[0013] The present invention adopts the design of the locking airbag and the pressure regulating airbag, and the inflation height of the locking airbag is greater than the inflation height of the pressure regulating airbag, so that the swelling, pain and even damage of other tissues caused by the whole circle of pressurized tourniquet in order to achieve the purpose of hemostasis can be avoided; through the design of the locking airbag and the locking through-hole, it can not only avoid the problem that the blocking belt is loosened due to the force of inflation and cannot stop bleeding, but also can make the locking airbag smoothly detach from the locking through-hole after pumping, so as to be convenient for taking out from the patient's body after surgery; through the design of the two-way airflow valve, it can ensure that the locking airbag is not affected in the process of exhausting and adjusting the hemostatic pressure, on the one hand, it can play the role of the pressure regulating airbag in hemostasis and pressure regulation, and on the other hand, it can ensure that the airbag blocking belt will not loosen and fall off. Therefore, the present invention has a reasonable structure, is easy to use, stable and reliable, can effectively control the blood flow velocity of the portal vein and artery in the liver through the looseness adjustment, effectively improves the hemostatic effect during liver surgery, and can be directly extracted from the patient's body after pumping, without the need for a new incision in a secondary operation, which can minimize the impact on the patient's body and reduce costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 A top view of an in vitro removable intelligent airbag blocking belt of the present invention;

[0015] Figure 2 A side view of an in vitro removable intelligent airbag blocking belt of the present invention;

[0016] Figure 3 It is a structural schematic diagram of the ventilation interface in the present invention;

[0017] Figure 4 It is a structural schematic diagram of the intelligent air pump in the present invention;

[0018] Figure 5 It is a structural schematic diagram of the two-way air flow valve in the present invention;

[0019] Figure 6 It is a schematic diagram of the use state of the present invention;

[0020] Figure 7-8 It is a schematic diagram of another embodiment of the present invention.

[0021] Among them: ventilation interface 1-1, air inlet 1-a, air outlet 1-b, locking buckle 1-c, ventilation hose 1-2, blocking belt body 1-3, locking hole 1-4, first airbag 1-5, second airbag 1-6, locking airbag 1-7, two-way airflow valve 1-8, blocking sheet 1-e, air blocking sheet 1-f, fixing rod 1-g, supporting skeleton 1-h, intelligent air pump 2-1, inflation port 2-a, exhaust port 2-b, locking piece 2-c, display interface 2-2, button operation area 2-3, on / off button 2-3-1, air flow detection button 2-3-2, inflation button 2-3-3, exhaust button 2-3-4, air pressure detection button 2-3-5, stop inflation / exhaustion button 2-3-6, confirmation button 2-3-7, hepatic artery 3-1, right branch of portal vein 3-2. DETAILED DESCRIPTION

[0022] The present invention is further described clearly and completely below in conjunction with the accompanying drawings and specific embodiments. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. The following description of at least one exemplary embodiment is actually only illustrative and is by no means intended to limit the present invention and its application or use. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0023] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, it indicates the presence of features, steps, operations, devices, components and / or combinations thereof.

[0024] Unless otherwise specifically stated, the relative arrangement of the parts and steps described in these embodiments, numerical expressions and numerical values ​​do not limit the scope of the present invention. At the same time, it should be understood that, for ease of description, the sizes of the various parts shown in the accompanying drawings are not drawn according to the actual proportional relationship. The technology, method and equipment known to ordinary technicians in the relevant field may not be discussed in detail, but in appropriate cases, the technology, method and equipment should be regarded as a part of the authorization specification. In all examples shown and discussed here, any specific value should be interpreted as being merely exemplary, rather than as a limitation. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar reference numerals and letters represent similar items in the following drawings, so once a certain item is defined in an accompanying drawing, it does not need to be further discussed in subsequent drawings.

[0025] In the description of the present invention, it is necessary to understand that the directions or positional relationships indicated by directional words such as "front, back, up, down, left, right", "lateral, vertical, perpendicular, horizontal" and "top, bottom" are usually based on the directions or positional relationships shown in the drawings. They are only for the convenience of describing the present invention and simplifying the description. Unless otherwise specified, these directional words do not indicate or imply that the devices or elements referred to must have a specific direction or be constructed and operated in a specific direction. Therefore, they cannot be understood as limiting the scope of protection of the present invention. The directional words "inside and outside" refer to the inside and outside relative to the contours of each component itself.

[0026] For ease of description, spatially relative terms such as "above", "above", "on the upper surface of", "above", etc. may be used here to describe the spatial positional relationship between a device or feature and other devices or features as shown in the figure. It should be understood that spatially relative terms are intended to include different orientations of the device in use or operation in addition to the orientation described in the figure. For example, if the device in the accompanying drawings is inverted, the device described as "above other devices or structures" or "above other devices or structures" will be positioned as "below other devices or structures" or "below other devices or structures". Thus, the exemplary term "above" can include both "above" and "below". The device can also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatially relative descriptions used here are interpreted accordingly.

[0027] In addition, it should be noted that the use of terms such as "first" and "second" to limit components is only for the convenience of distinguishing the corresponding components. If not otherwise stated, the above terms have no special meaning and therefore cannot be understood as limiting the scope of protection of the present invention.

[0028] Embodiment 1

[0029] This embodiment is a smart airbag blocking belt that can be removed from the body. Figure 1-5As shown, it includes a blocking belt body 1-3 and a ventilation hose 1-2 connected to each other, and one side of the blocking belt body 1-3 is provided with an air bag connected to the ventilation hose 1-2, and the air bag includes a locking air bag 1-7 and a pressure-regulating airbag. Specifically, the pressure-regulating airbag includes a first airbag 1-5 and a second airbag 1-6 that are continuously arranged. The locking airbag 1-7 is protruded from the blocking belt body 1-3, that is, the inflation height of the locking airbag 1-7 is greater than the inflation height of the pressure-regulating airbag. The locking airbag 1-7 plays a major role when pressurized, and can avoid swelling, pain and even damage of other tissues caused by the full circle of pressurized tourniquet in order to achieve the purpose of hemostasis. A two-way airflow valve 1-8 is provided between the locking airbag 1-7 and the ventilation hose 1-2. Specifically, the two-way airflow valve 1-8 includes a blocking sheet 1-e, an air-blocking sheet 1-f and a sheet fixing rod 1-g. The blocking sheet 1-e is arranged at both ends of the airflow channel, and the sheet fixing rod 1-g is arranged in the middle of the airflow channel, and the two sides of the sheet fixing rod 1-g are rotatably connected to the air-blocking sheet 1-f, and the two air-blocking sheets 1-f The two blocking sheets 1-e are respectively arranged under the two air-blocking sheets 1-f. The design of the two-way airflow valve 1-8 can ensure that the locking airbag 1-7 is not affected during the process of properly exhausting and adjusting the hemostatic pressure. On the one hand, it can give full play to the role of the pressure-regulating airbag in hemostasis and pressure regulation. On the other hand, it can ensure the stability of the locking airbag 1-7 in the locking through-hole 1-4, that is, the stability of the locking of the blocking belt is ensured, and the problem of loosening and falling off will not occur. The blocking belt body 1-3 is also provided with a locking through-hole 1-4 for the blocking belt body 1-3 to form an annular locking. Specifically, the locking airbag 1-7 and the locking through-hole 1-4 are respectively arranged on the left and right sides of the pressure-regulating airbag. The shape of the locking through-hole 1-4 is adapted to the shape of the locking airbag 1-7 before inflation. The locking airbag 1-7 before inflation can pass through the locking through-hole 1-4, and the locking airbag 1-7 passing through the locking through-hole 1-4 The locking airbag 1-7 is expanded by inflation and becomes larger than the size of the locking hole 1-4, so that it can be locked in the locking hole 1-4 and will not slip out. When in use, the blocking belt body 1-3 is wound into a ring, and the airbag is placed inside the ring. Specifically, one end of the blocking belt body 1-3 provided with the locking airbag 1-7 is wound with the locking airbag 1-7 to the outside of the end of the blocking belt body 1-3 provided with the locking hole 1-4 (the side of the locking hole 1-4 away from the airbag), and then the locking airbag 1-7 is passed from the outside of the locking hole 1-4 to the inside of the locking hole 1-4, that is, the inside of the ring. At this time, the locking airbag 1-7 can be expanded to be larger than the size of the locking hole 1-4 by inflation, that is, the inflated locking airbag 1-7 will not slip out of the locking hole 1-4, thereby ensuring the stability of the ring-shaped locking of the blocking belt body 1-3, avoiding the problem of the blocking belt being loosened due to the force of inflation and being unable to stop bleeding;After use, the locking airbag 1-7 can be restored to its shape before inflation by pumping air, and can be smoothly separated from the locking hole 1-4. At this time, the airbag blocking band can be manually pulled hard to make it safely separate from the blood vessel, so that it can be easily removed from the patient's body after surgery. ;

[0030] Furthermore, the end of the ventilation hose 1-2 away from the blocking belt body 1-3 is provided with a ventilation interface 1-1 connected to the intelligent air pump 2-1, the ventilation interface 1-1 includes an air inlet 1-a, an air outlet 1-b and a locking buckle 1-c, the intelligent air pump 2-1 is provided with an inflation port 2-a matching the air inlet 1-a, an air extraction port 2-b matching the air outlet 1-b and a locking member 2-c matching the locking buckle 1-c, and the intelligent air pump 2-1 also has a display interface 2-2 And a button operation area 2-3, the touch screen of the display interface 2-2 has the functions of all physical buttons, and can display the volume of the airbag blocking belt, the internal air pressure, and the air flow of the inlet / outlet airflow in real time. The button operation area 2-3 includes an on / off button 2-3-1, an air flow detection button 2-3-2, an inflation button (increases and maintains the air pressure) 2-3-3, a deflating button (decreases and maintains the air pressure) 2-3-4, an air pressure detection button 2-3-5, a stop inflation / deflating button 2-3-6 and a confirmation button 2-3-7.

[0031] In this embodiment, when the intelligent airbag blocking belt that can be removed from the body is used, Figure 6 As shown, the side of the blocking band body 1-3 with the airbag wraps the hepatic artery 3-1 and the right branch of the portal vein 3-2 at the same time, and then the end of the blocking band body 1-3 with the locking airbag 1-7 is wound together with the locking airbag 1-7 to the outside of the end of the blocking band body 1-3 with the locking through hole 1-4 (the side of the locking through hole 1-4 away from the airbag), and then the locking airbag 1-7 is passed from the outside of the locking through hole 1-4 to the inside of the locking through hole 1-4, that is, the inside of the ring, to form a ring locking state, and then the ventilation interface 1-1 is inflated by the intelligent air pump 2-1, so as to realize the expansion of the airbag forming the ring, reduce the inner diameter of the airbag blocking band to squeeze the large and small blood vessels wrapped therein, and achieve the effect of hemostasis; the ventilation interface 1-1 is properly evacuated by the intelligent air pump 2-1, so as to realize the contraction of the airbag forming the ring, increase the inner diameter of the airbag blocking band, reduce the squeezing force of the airbag on the blood vessels, and achieve the effect of blood circulation.

[0032] In this embodiment, through the setting of the two-way airflow valve 1-8, when the intelligent air pump 2-1 inflates the airbag blocking belt, the blocking sheet 1-e and the air-blocking sheet 1-f do not block the airflow from entering the locking airbag 1-7; when the intelligent air pump 2-1 properly evacuates the airbag blocking belt (proper evacuation is to adjust the pressure of squeezing the blood vessels), the blocking sheet 1-e blocks the air-blocking sheet 1-f from rotating in the direction of evacuation. At this time, the blocking sheet 1-f is closely attached to the blocking sheet 1-e to prevent the airflow in the locking airbag 1-7 from flowing out, and only the pressure-regulating airbag is evacuated and decompressed; when the intelligent air pump 2-1 inflates the airbag blocking belt, the blocking sheet 1-e and the air-blocking sheet 1-f are inflated. When the broken band is forcefully evacuated (the strong evacuation is to separate the locking airbag 1-7 from the locking hole 1-4, and the airbag blocking band is manually pulled hard to make it safely separate from the blood vessel), the pressure difference between the inside and outside of the two-way airflow valve 1-8 is greater than the threshold value (the maximum pressure difference that can be tolerated), and the air-blocking sheet 1-f is deformed, and the blocking sheet 1-e cannot prevent the air-blocking sheet 1-f from rotating and moving in the direction of evacuation. At this time, all the airbags on the airbag blocking band are quickly evacuated, so that the locking airbag 1-7 is reduced to the smallest volume and separated from the locking hole 1-4 so that it can be directly withdrawn from the patient's body without the need for a secondary operation.

[0033] It should be noted that the removable intelligent airbag blocking belt of this embodiment needs to be placed in the patient's body for one week. During this process, the blood flow needs to be controlled by adjusting the inlet and outlet air. After one week, the belt is removed from the body after the air is pumped out without making any new incisions.

[0034] This embodiment can calculate the blood flow rate in a single blood vessel by the total volume of the inflated gas and the internal air pressure:

[0035] As attached Figure 2 As shown, it is known that the distance from A to B is L (mm), the bulge height of the pressure-regulating balloon is h (mm), the normal diameter of the blood vessel is D, and the blood flow is F.

[0036] The balloon begins to inflate and squeeze the blood vessel. When the balloon occlusion band ties the blood vessel, the inner diameter of the center is d = L / 2π-h. When D>d, the diameter of the blood vessel is d, and the blood flow rate is f = d^2 / D^2.

[0037] Embodiment 2

[0038] like Figure 7-8 As shown, the structure of this embodiment is basically the same as that of the first embodiment, except that the tops of the locking airbags 1-7 and the pressure-regulating airbags are both provided with secondary protrusions, which can further reduce the internal gap during use.

[0039] In summary, the in vitro removable intelligent airbag blocking belt provided by the present invention has a reasonable structure and is easy to use. It can not only effectively control the blood flow velocity of the portal vein and artery in the liver, but also will not cause damage to the liver, is not easy to slip, the pressure is easy to control, and is relatively safe.

[0040] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. An in vitro removable intelligent airbag blocking belt, comprising a blocking belt body (1-3) and a ventilation hose (1-2) connected to each other, characterized in that: An airbag connected to the ventilation hose (1-2) is provided on one side of the blocking belt body (1-3), the airbag comprising a locking airbag (1-7) and a pressure regulating airbag, the locking airbag (1-7) protruding from the blocking belt body (1-3), and a two-way airflow valve (1-8) is provided between the locking airbag (1-7) and the ventilation hose (1-2), the blocking belt body (1-3) is also provided with a locking through-hole (1-4) matching the locking airbag (1-7), the locking airbag (1-7) and the locking through-hole (1-4) are respectively provided on the left and right sides of the pressure regulating airbag, the shape of the locking through-hole (1-4) is adapted to the shape of the locking airbag (1-7) before inflation, and the locking through-hole (1-4) before inflation is adapted to the shape of the locking airbag (1-7) before inflation. The airbag (1-7) can pass through the locking opening (1-4); the locking airbag (1-7) passing through the locking opening (1-4) can be locked in the locking opening (1-4) by inflation; the two-way airflow valve (1-8) comprises a blocking sheet (1-e), an air blocking thin sheet (1-f) and a thin sheet fixing rod (1-g); the blocking sheet (1-e) is arranged at both ends of the airflow channel; the thin sheet fixing rod (1-g) is arranged in the middle of the airflow channel; and the two sides of the thin sheet fixing rod (1-g) are rotatably connected to the air blocking thin sheet (1-f); the two air blocking thin sheets (1-f) are arranged in a "V" shape; and the two blocking sheets (1-e) are respectively arranged below the two air blocking thin sheets (1-f).

2. The in vitro removable intelligent airbag blocking belt according to claim 1 is characterized in that: An end of the ventilation hose (1-2) away from the blocking belt body (1-3) is provided with a ventilation interface (1-1) that is docked with the intelligent air pump (2-1), and the ventilation interface (1-1) comprises an air inlet (1-a), an air outlet (1-b) and a locking buckle (1-c).

3. The intelligent airbag blocking belt that can be removed from the body according to claim 2 is characterized in that: The intelligent air pump (2-1) is provided with an air charging port (2-a) matching the air inlet (1-a), an air extraction port (2-b) matching the air outlet (1-b), and a locking piece (2-c) matching the locking buckle (1-c).

4. The removable intelligent airbag blocking belt according to claim 2, characterized in that: The intelligent air pump (2-1) also has a display interface (2-2) and a button operation area (2-3).

5. The removable intelligent airbag blocking belt according to claim 1, characterized in that: The pressure regulating airbag comprises a first airbag (1-5) and a second airbag (1-6) which are arranged in series.

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