CN116439767A - One-way suction negative pressure tension reduction patch - Google Patents

Abstract

The invention relates to the technical field of medical auxiliary equipment. The one-way suction type negative pressure stretch-reducing and scar-removing patch includes a film and a flexible porous material layer, and also includes a tension reducer, which includes two sub-films arranged opposite to each other on the left and right and is used to control the distance between the two sub-films. tightening mechanism; the two ends of the flexible porous material layer are respectively connected to the two sub-films; the film covers the periphery of the tension reducer; also includes a one-way exhaust valve, the one-way exhaust The valve is installed on the film or the flexible porous material layer; the one-way exhaust valve includes a one-way ventilation film layer. The invention realizes the integration of the tension reducer and the negative pressure scar removing film. Through the one-way exhaust valve, it is convenient to ensure the vacuum degree of the patch and the negative pressure repair effect of the scar.

Description

One-way suction negative pressure tension reduction patch

technical field

The invention belongs to the field of medical aids, in particular to a scar removal patch.

Background technique

Body skin trauma, especially after burn healing, trauma and surgery, will leave scars, and the scars will affect the appearance of the human body, cause pain and itching, and reduce the quality of life. At present, the main treatment physical method is to pressurize through bandage binding or elastic clothing, so as to achieve the effect of removing scars. This method is suitable for the scar treatment of large-area trauma, but has the following defects for the treatment of small-area trauma scars: on the one hand, it is inconvenient to bind small-area trauma and is likely to bring discomfort and inconvenience to patients' daily life; There are various depressions, such as areas such as the chest, spine, etc., that often cannot be compressed with bandages or compression garments. However, the commonly used silicone scar removal patches in clinical treatment can only moisturize the scar surface and relieve itching, and cannot exert pressure on the scar, thus achieving a better therapeutic effect.

In response to the above problems, the negative pressure scar removal patch was conceived. However, the existing negative pressure scar removal patch applies pressure to the scar surface by pumping negative pressure, so that the scar tissue lacks blood supply and oxygen supply, and promotes fibrogenesis in the scar. Cell necroptosis, so as to achieve the role of scar treatment.

The tension reducer is a commonly used wound treatment device at present, replacing the traditional way of suturing with needles and threads, or suturing with skin nails. The skin tension device slightly reduces the tension on both sides of the wound, which is helpful for wound recovery and can avoid pulling the wound due to high skin tension during facial movements.

The existing negative pressure patch cannot realize the organic combination with the tension reducer.

Contents of the invention

The present invention provides a one-way suction-type negative pressure stretch-reducing and scar-removing patch to solve at least one of the above-mentioned technical problems.

In order to achieve the above-mentioned purpose, the present invention provides a one-way suction type negative pressure stretch-reducing and scar-removing patch, which includes a film and a flexible porous material layer, and is characterized in that it also includes a tension reducer, and the tension reducer includes left and right relative The two sub-films set and the tightening mechanism for controlling the distance between the two sub-films;

Both ends of the flexible porous material layer are respectively connected to the two sub-films;

The film is covered on the periphery of the tension reducer;

It also includes a one-way exhaust valve, the one-way exhaust valve is installed on the film or on the flexible porous material layer;

The one-way exhaust valve includes a one-way ventilation film layer.

The invention realizes the integration of the tension reducer and the negative pressure scar removing film. Through the one-way exhaust valve, it is convenient to ensure the vacuum degree of the patch and the negative pressure repair effect of the scar.

As a preferred solution, the one-way exhaust valve includes an upper film layer, the one-way ventilation film layer and a lower film layer arranged sequentially from top to bottom;

The upper film layer and the lower film layer are provided with air holes arranged up and down;

A one-way hole is opened on the one-way ventilation film layer, and one side of the one-way hole is connected with a shielding portion covering the one-way hole, and the shielding portion is located above the one-way hole;

The outer edges of the upper membrane layer, the one-way ventilation membrane layer and the lower membrane layer are connected, and there is a diversion gap between the upper membrane layer and the one-way ventilation membrane layer. There is a diversion gap between the ventilation film layer and the lower film layer.

It is convenient to realize one-way flow.

Further preferably, at least one of the lower side of the upper film layer and the upper side of the one-way ventilation film layer is provided with a protrusion;

At least one of the upper side of the lower membrane layer and the lower side of the one-way ventilation membrane layer is provided with a protrusion.

Facilitate the formation of diversion gap.

As another preferred solution, the one-way exhaust valve includes an upper film layer, the one-way ventilation film layer and a lower film layer arranged sequentially from top to bottom;

The upper film layer and the lower film layer are provided with air holes arranged up and down;

A one-way hole is opened on the one-way ventilation film layer, and one side of the one-way hole is connected with a shielding portion covering the one-way hole, and the shielding portion is located above the one-way hole;

The outer edges of the upper film layer, the one-way ventilation film layer and the lower film layer are connected;

The pores of the lower film layer are provided with an auxiliary gap extending outward, and the auxiliary gap is located below the one-way hole;

There is a diversion gap between the upper film layer and the one-way ventilation film layer.

Further preferably, at least one of the lower side of the upper film layer and the upper side of the one-way ventilation film layer is provided with a protrusion.

As another preferred solution, the one-way exhaust valve includes a first one-way ventilation film layer, a second one-way ventilation film layer and a lower film layer arranged sequentially from top to bottom;

The first one-way ventilation film layer and the second one-way ventilation film layer are provided with arc-shaped slots correspondingly arranged up and down and arranged circumferentially;

The center of the second one-way ventilation membrane layer and the lower membrane layer is provided with round holes correspondingly arranged up and down;

The circular hole of the lower film layer is provided with a notch extending outward, the notch is located below the arc-shaped slit, and the width of the notch is smaller than the width of the arc-shaped slit.

It is convenient to realize one-way exhaust.

Further preferably, the first one-way ventilation film layer is provided with an arc-shaped tearing line for forming the arc-shaped slit, and the opening size of the arc-shaped slit is controlled by the degree of tearing of the arc-shaped tearing line. It is convenient to realize the adjustment of ventilation volume.

Alternatively, it also includes an airflow adjustment mechanism, the airflow adjustment mechanism includes a release paper layer and an annular film attached to the release paper layer;

There are at least four ring-shaped films, and at least four ring-shaped films are arranged inside and outside;

The ring-shaped film is used to stick on the upper side of the first one-way ventilation film layer, and partially covers the arc-shaped slit on the first one-way ventilation film layer. It is convenient to realize the adjustment of ventilation volume.

Further preferably, both ends of the flexible porous material layer are connected to the two sub-films by sutures.

Alternatively, the two ends of the flexible porous material layer are glued and fixed to the ends of the two sub-films.

The flexible porous material layer is a silica gel layer with holes. The hole in the silica gel layer communicates with the one-way exhaust valve.

As a preferred solution, the film includes a total film and an auxiliary film arranged up and down,

The front and rear ends of the auxiliary film are provided with adhesive layers, the auxiliary film is pasted on the tightening mechanism and above the flexible porous material layer, and the one-way exhaust valve is installed on the auxiliary film ;

An adhesive layer is provided on the periphery of the total film, and the total film covers the periphery of the auxiliary film and the periphery of the tension reducer;

An upper opening where the air outlet of the one-way exhaust valve is exposed is opened in the center of the total film;

The center of the auxiliary film is provided with a lower opening where the air inlet of the one-way exhaust valve is docked, and the one-way exhaust valve is sandwiched between the general film and the auxiliary film, and the one-way exhaust valve The upper opening and the lower opening are connected to the exhaust valve.

As another preferred solution, the film includes a total film and an auxiliary film arranged up and down,

The auxiliary film is attached to the upper side of the flexible porous material layer, and the one-way exhaust valve is installed on the auxiliary film;

An adhesive layer is provided on the periphery of the total film, and the total film covers the periphery of the auxiliary film and the periphery of the tension reducer;

The center of the main film is provided with an opening where the exhaust port of the one-way exhaust valve is exposed, and the opening is connected with the auxiliary film.

As another preferred solution, the one-way exhaust valve is installed on the film;

The outer edge of the sticking film is provided with an adhesive layer.

As another preferred solution, the one-way exhaust valve is installed on the flexible porous material layer;

The film is provided with a through hole exposed from the exhaust port of the one-way exhaust valve, and the film is provided with the through hole connected to the flexible porous material layer.

Further preferably, the lower side of the flexible porous material layer is covered with a gel layer.

Alternatively, the flexible porous material layer is embedded with gel particles.

Further preferably, a push-type exhaust mechanism is also included, and the push-type exhaust mechanism is installed on the film.

The push-type exhaust mechanism is connected with the one-way exhaust valve. The one-way air inlet of the push type exhaust mechanism is docked with the air inlet of the one-way exhaust valve.

Description of drawings

Fig. 1 is a kind of sectional view of specific embodiment 1 of the present invention;

Fig. 2 is the exploded view of specific embodiment 1 of the present invention;

Fig. 3 is a kind of plan view of specific embodiment 1 of the present invention;

Fig. 4 is an exploded exploded view of the one-way exhaust valve of the first scheme one of the embodiment 1 of the present invention;

Fig. 5 is a kind of explosion exploded view of the one-way exhaust valve of scheme 2 of embodiment 1 of the present invention;

Fig. 6 is an exploded exploded view of the one-way exhaust valve of the third embodiment of the present invention;

Fig. 7 is a kind of sectional view of specific embodiment 2 of the present invention;

Figure 8 is an exploded view of Embodiment 2 of the present invention;

Figure 9 is a top view of Embodiment 2 of the present invention;

Figure 10 is a cross-sectional view of Embodiment 3 of the present invention;

Figure 11 is an exploded view of Embodiment 3 of the present invention;

Figure 12 is a cross-sectional view of Embodiment 4 of the present invention;

Figure 13 is an exploded view of Embodiment 4 of the present invention;

Fig. 14 is a partial structural schematic diagram of Embodiment 5 of the present invention;

Fig. 15 is a partial structural schematic diagram of Embodiment 5 of the present invention.

Among them: 1 is sub film, 2 is tightening mechanism, 3 is flexible porous material layer, 4 is auxiliary film, 5 is total film, 6 is film, 7 is one-way exhaust valve, 71 is upper film layer, 72 is The one-way ventilation film layer, 73 is the lower film layer, 74 is the first one-way ventilation film layer, 75 is the second one-way ventilation film layer, 81 is a support seat, 82 is a spring, and 83 is a button.

Detailed ways

The present invention will be further described below in conjunction with the accompanying drawings.

Referring to Fig. 1 to Fig. 6, specific embodiment 1: one-way pumping type negative pressure tension-reducing and scar-removing patch includes a film and a flexible porous material layer 3, and also includes a tension reducer, which includes left and right oppositely arranged Two sub-films and a tightening mechanism 2 for controlling the distance between the two sub-films; the two ends of the flexible porous material layer 3 are respectively connected to the two sub-films; the film covers the periphery of the tension reducer; it also includes a one-way exhaust valve 7, The one-way exhaust valve 7 includes a one-way ventilation film layer.

The film includes a total film 5 and an auxiliary film 4 arranged up and down. The front and rear ends of the auxiliary film 4 are provided with an adhesive layer. The auxiliary film 4 is pasted on the tightening mechanism 2 and the top of the flexible porous material layer 3. There is a one-way exhaust valve 7; the periphery of the total film 5 is provided with an adhesive layer, the total film 5 covers the periphery of the auxiliary film 4, and covers the periphery of the tension reducer; the center of the total film 5 is provided with a one-way exhaust The upper opening where the air outlet of the valve 7 is exposed; the center of the auxiliary film 4 is provided with a lower opening where the air inlet of the one-way exhaust valve 7 is docked, and the one-way exhaust valve 7 is sandwiched between the main film 5 and the auxiliary film 4 , and the one-way exhaust valve 7 is connected to the upper opening and the lower opening.

The invention realizes the integration of the tension reducer and the negative pressure scar removing film. Through the one-way exhaust valve 7, it is convenient to ensure the vacuum degree of the patch and ensure the negative pressure repair effect of the scar.

The structure of the specific one-way exhaust valve can be as follows:

Referring to Fig. 4, option one, the one-way exhaust valve includes an upper film layer 71, a one-way ventilation film layer 72 and a lower film layer 73 arranged in sequence from top to bottom; the upper film layer 71 and the lower film layer 73 are provided with upper and lower The air holes provided at the positions; the one-way ventilation film layer 72 is provided with a one-way hole, and one side of the one-way hole is connected with a shielding portion covering the one-way hole, and the shielding portion is located above the one-way hole; the upper film layer 71, the one-way hole The outer edges of the ventilation film layer 72 and the lower film layer 73 are connected, and there is a diversion gap between the upper film layer 71 and the one-way ventilation film layer 72, and there is a gap between the one-way ventilation film layer 72 and the lower film layer 73. There is a diversion gap. It is convenient to realize one-way flow. At least one of the lower side of the upper film layer 71 and the upper side of the one-way ventilation film layer 72 is provided with a protrusion; the upper side of the lower film layer 73 and the lower side of the one-way ventilation film layer 72 are provided with at least one protrusion. Facilitate the formation of diversion gap. The preparation method of the shielding part is to open a one-way hole curved outward on the one-way ventilation film layer, and stretch the area inside the one-way hole outward to form a shielding part covering the one-way hole.

Referring to Fig. 5, option two, the one-way exhaust valve includes an upper membrane layer 71, a one-way ventilation membrane layer 72 and a lower membrane layer 73 arranged in sequence from top to bottom; the upper membrane layer 71 and the lower membrane layer 73 are provided with upper and lower pairs The air holes provided at the positions; the one-way ventilation film layer 72 is provided with a one-way hole, and one side of the one-way hole is connected with a shielding portion covering the one-way hole, and the shielding portion is located above the one-way hole; the upper film layer 71, the one-way hole The outer edges of the ventilation film layer 72 and the lower film layer 73 are connected; the air hole of the lower film layer 73 is provided with an auxiliary gap extending outward, and the auxiliary gap is located below the one-way hole; the upper film layer 71, the one-way ventilation film layer There is diversion gap between 72. At least one of the lower side of the upper film layer 71 and the upper side of the one-way ventilation film layer 72 is provided with a protrusion. The preparation method of the shielding part is to open a one-way hole curved outward on the one-way ventilation film layer, and stretch the area inside the one-way hole outward to form a shielding part covering the one-way hole.

Referring to Fig. 6, scheme three, the one-way exhaust valve includes a first one-way ventilation film layer 74, a second one-way ventilation film layer 75 and a lower film layer 73 arranged in sequence from top to bottom; On the ventilating film layer 74 and the second one-way venting film layer 75, arc-shaped slits correspondingly arranged up and down and arranged circumferentially are opened; the second one-way venting film layer 75 and the lower film layer The center is provided with round holes correspondingly arranged up and down; the round hole of the lower film layer 73 is provided with a gap extending outward, and the gap is located below the arc-shaped slot, and the width of the gap is smaller than that of the arc-shaped slot. width. It is convenient to realize one-way exhaust. The longitudinal projection of the arc-shaped slots on the first one-way ventilation film layer 74 may intersect the longitudinal projection of the arc-shaped slots on the second one-way ventilation film layer 75 . The intersection points are located at the two ends of the arc slot. The first one-way ventilation film layer is provided with an arc-shaped tearing line for forming the arc-shaped slit, and the opening size of the arc-shaped slit is controlled by the degree of tearing of the arc-shaped tearing line. Easy to adjust ventilation. Alternatively, it also includes a ventilation volume adjustment mechanism, the ventilation volume adjustment mechanism includes a release paper layer and an annular film attached to the release paper layer. There are at least four ring-shaped films, and at least four ring-shaped films are arranged inside and outside. The annular film is used to stick on the upper side of the first one-way ventilation film layer, and partially covers the arc-shaped slots on the first one-way ventilation film layer. Realize the adjustment of arc slot opening. To meet the switching of different ventilation volumes.

Solution 4, the one-way exhaust valve includes the first ventilating film layer, the second ventilating film layer and the lower film layer arranged in sequence from top to bottom; the first ventilating film layer is provided with first air ports arranged in the axial direction , the inside of the first air port is provided with an extension extending outwards to cover the first air port. Corresponding circular holes are opened in the center of the second ventilating film layer and the lower film layer. The second ventilating film layer is provided with a second air port arranged in the circumferential direction, and the first air port and the second air port are arranged correspondingly up and down. The lower film layer is provided with a notch connecting the circular hole and the second air hole, and the notch extends outward from the outer side of the circular hole. The hardness of the first ventilation film layer is smaller than the hardness of the second ventilation film layer. When negative pressure is drawn, the first air port will be opened to form a suction airway. After the negative pressure is lost, due to the electrostatic effect of the first one-way ventilation film layer, it will be reattached to the second ventilation film layer to play a sealing role. . The second breathable film layer can be a hard plastic film.

The first one-way ventilation film layer 74 and the second one-way ventilation film layer 75 are provided with arc-shaped slits correspondingly arranged up and down and arranged circumferentially; the second one-way ventilation film layer 75 and the The center of the lower film layer is provided with round holes correspondingly arranged up and down; the round hole of the lower film layer 73 is provided with a breach extending outward, and the breach is located below the arc-shaped slit, and the width of the breach is less than The width of the arc kerf. It is convenient to realize one-way exhaust. The longitudinal projection of the arc-shaped slots on the first one-way ventilation film layer 74 may intersect the longitudinal projection of the arc-shaped slots on the second one-way ventilation film layer 75 . The intersection points are located at the two ends of the arc slot. The first one-way ventilation film layer is provided with an arc-shaped tearing line for forming the arc-shaped slit, and the opening size of the arc-shaped slit is controlled by the degree of tearing of the arc-shaped tearing line. Easy to adjust ventilation. Alternatively, it also includes a ventilation volume adjustment mechanism, the ventilation volume adjustment mechanism includes a release paper layer and an annular film attached to the release paper layer. There are at least four ring-shaped films, and at least four ring-shaped films are arranged inside and outside. The annular film is used to stick on the upper side of the first one-way ventilation film layer, and partially covers the arc-shaped slots on the first one-way ventilation film layer. Realize the adjustment of arc slot opening. To meet the switching of different ventilation volumes.

The two ends of the flexible porous material layer 3 are connected with the two sub-films 1 by sutures. Alternatively, the two ends of the flexible porous material layer 3 are glued and fixed on the ends of the two sub-films 1 .

The flexible porous material layer 3 is a silicone layer with holes. The hole in the silica gel layer communicates with the one-way exhaust valve 7 . The flexible porous material layer 3 can also be a water-absorbable cloth sheet or a plush sheet, or a cloth sheet or a plush sheet coated with a scar-removing medicine. The layer of flexible porous material is a foam dressing. A silicone layer is attached to the underside of the foam dressing. The flexible porous material layer includes a flexible base layer arranged up and down and a silicone gel layer, and the flexible base layer is sponge or polyurethane foam. The silicone gel layer is the side that contacts the skin. The silicone gel layer includes silicone gel particles arranged at intervals.

Pores are provided on the flexible porous material layer, and at least three pore groups are arranged sequentially from inside to outside on the flexible porous material layer, and the pore density of the outer pore group is greater than that of the inner pore group.

Facilitates the formation of negative pressure walls on both sides of the scar. Improves the air barrier inside and outside the scar. Improves the healing effect of scars.

The tightening mechanism 2 can be an elastic band. Alternatively, the tightening mechanism 2 includes a screw rod, a left fixing seat and a right fixing seat relatively fixed on the two films, one end of the screw rod is rotatably connected to the left fixing seat, and the other end of the screw rod is threadedly connected to the right fixing seat. Further, the adjustment of the distance between the two sub-films 1 is realized. A layer 3 of flexible porous material extends upwards from the gaps between adjacent screws.

Referring to Fig. 7 to Fig. 9, the specific embodiment 2, the one-way suction type negative pressure tension-reducing and scar-removing patch includes a film, a one-way exhaust valve 7 and a flexible porous material layer 3, and also includes a tension reducer to reduce tension. The tensioner includes two sub-films 1 opposite to each other and a tightening mechanism 2 for controlling the distance between the two sub-films 1; the two ends of the flexible porous material layer 3 are respectively connected with the two sub-films 1; the film covers the periphery of the tension reducer .

The film includes a total film 5 and an auxiliary film 4 arranged up and down, the auxiliary film 4 is attached to the upper side of the flexible porous material layer, and a one-way exhaust valve is installed on the auxiliary film 4; the periphery of the total film 5 is provided with an adhesive layer. Sticking film 5 covers the periphery of auxiliary sticking film 4, and covers the periphery of tension reducer;

The two ends of the flexible porous material layer 3 are connected with the two sub-films 1 by sutures. Alternatively, the two ends of the flexible porous material layer 3 are glued and fixed on the ends of the two sub-films 1 .

The flexible porous material layer 3 is a silicone layer with holes. The hole in the silica gel layer communicates with the one-way exhaust valve 7 . The flexible porous material layer 3 can also be a water-absorbable cloth sheet or a plush sheet, or a cloth sheet or a plush sheet coated with a scar-removing medicine.

The tightening mechanism 2 can be an elastic band. Alternatively, the tightening mechanism 2 includes a screw rod, a left fixing seat and a right fixing seat relatively fixed on the two films, one end of the screw rod is rotatably connected to the left fixing seat, and the other end of the screw rod is threadedly connected to the right fixing seat. Further, the adjustment of the distance between the two sub-films 1 is realized. A layer 3 of flexible porous material extends upwards from the gaps between adjacent screws.

Referring to Fig. 10 and Fig. 11, specific embodiment 3, a one-way suction type negative pressure tension-reducing and scar-removing patch, includes a film 6, a one-way exhaust valve 7 and a flexible porous material layer 3, and also includes a tension reducer, The tension reducer includes two sub-films 1 arranged opposite to each other and a tightening mechanism 2 for controlling the distance between the two sub-films 1; the two ends of the flexible porous material layer 3 are respectively connected to the two sub-films 1; the film is covered on the tension reducer. peripheral. A one-way exhaust valve 7 is installed on the film 6; an adhesive layer is provided on the outer edge of the film.

The two ends of the flexible porous material layer 3 are connected with the two sub-films 1 by sutures. Alternatively, the two ends of the flexible porous material layer 3 are glued and fixed on the ends of the two sub-films 1 .

The flexible porous material layer 3 is a silicone layer with holes. The hole in the silica gel layer communicates with the one-way exhaust valve 7 . The flexible porous material layer 3 can also be a water-absorbable cloth sheet or a plush sheet, or a cloth sheet or a plush sheet coated with a scar-removing medicine.

The tightening mechanism 2 can be an elastic band. Alternatively, the tightening mechanism 2 includes a screw rod, a left fixing seat and a right fixing seat relatively fixed on the two films, one end of the screw rod is rotatably connected to the left fixing seat, and the other end of the screw rod is threadedly connected to the right fixing seat. Further, the adjustment of the distance between the two sub-films 1 is realized. A layer 3 of flexible porous material extends upwards from the gaps between adjacent screws.

Referring to Fig. 12 and Fig. 13, the specific embodiment 4, the one-way suction type negative pressure tension-reducing and scar-removing patch includes a film, a one-way exhaust valve 7 and a flexible porous material layer 3, and also includes a tension reducer to reduce tension. The tensioner includes two sub-films 1 oppositely arranged on the left and right and a tightening mechanism 2 for controlling the distance between the two sub-films 1; the two ends of the flexible porous material layer 3 are respectively connected with the two sub-films 1; the film 6 is covered on the tension reducer. peripheral. The one-way exhaust valve 7 is installed on the flexible porous material layer 3 . The film is provided with a through hole exposed from the exhaust port of the one-way exhaust valve, and the film is provided with the through hole connected to the flexible porous material layer.

The two ends of the flexible porous material layer 3 are connected with the two sub-films 1 by sutures. Alternatively, the two ends of the flexible porous material layer 3 are glued and fixed on the ends of the two sub-films 1 .

The flexible porous material layer 3 is a silicone layer with holes. The hole in the silica gel layer communicates with the one-way exhaust valve 7 . The flexible porous material layer 3 can also be a water-absorbable cloth sheet or a plush sheet, or a cloth sheet or a plush sheet coated with a scar-removing medicine.

The tightening mechanism 2 can be an elastic band. Alternatively, the tightening mechanism 2 includes a screw rod, a left fixing seat and a right fixing seat relatively fixed on the two films, one end of the screw rod is rotatably connected to the left fixing seat, and the other end of the screw rod is threadedly connected to the right fixing seat. Further, the adjustment of the distance between the two sub-films 1 is realized. A layer 3 of flexible porous material extends upwards from the gaps between adjacent screws.

Referring to Fig. 14 and Fig. 15, specific embodiment 5, on the basis of specific embodiment 1, 2, 3 or 4, further includes a push-type exhaust mechanism, and the push-type exhaust mechanism is installed on the film. The push-type exhaust mechanism includes a support base 81 that is connected up and down, and an air inlet cavity is arranged on the periphery of the support base 81 . The inner cavity surrounded by the patch and the skin communicates with the air intake cavity. The support seat 81 is provided with an adjacent air storage chamber and an air intake chamber, and the support seat 81 is provided with a docking hole for connecting the air storage chamber and the air intake chamber; the push-type exhaust mechanism also includes a button 83, which is connected with the support A spring 82 is installed between the seats 81, and when the button 83 is pressed down, the docking hole is blocked; the button 83 or the support seat 81 is provided with a one-way exhaust channel for docking with the gas storage cavity, and a one-way exhaust channel is installed in the one-way exhaust channel. valve. Facilitates single degassing after pressing. Realize the manual pressure discharge of the gas in the applicator. In FIG. 14 , the button 83 is provided with a one-way exhaust channel that connects with the air storage cavity. In FIG. 15 , a one-way exhaust channel is opened on the support seat 81 to connect with the air storage cavity.

The specific embodiment 6, on the basis of the specific embodiment 1, 2, 3 or 4, further includes a push-type exhaust mechanism, and the push-type exhaust mechanism is installed on the film. The push-type exhaust mechanism includes a support seat which is conducted up and down, and an air intake cavity is arranged on the periphery of the support seat. The inner cavity surrounded by the patch and the skin communicates with the air intake cavity. The supporting seat is provided with an adjacent air storage cavity and an air intake cavity, and a one-way air intake hole connecting the air storage cavity and the air intake cavity is opened on the support seat, and an air intake check valve is installed on the one-way air intake hole The push-type exhaust mechanism also includes a button, and a spring is installed between the button and the support seat; the button or the support seat is provided with a one-way exhaust channel connected to the air storage chamber, and a one-way valve is installed in the one-way exhaust channel; When the button is pressed down, the intake one-way valve is closed, and the gas in the gas storage chamber is exhausted through the one-way exhaust channel; when the button is moved up, the intake one-way valve is opened, and the gas in the gas storage cavity is ventilated.

The above are only preferred embodiments of the present invention, and it should be pointed out that for those of ordinary skill in the art, some improvements and modifications can also be made without departing from the principle of the present invention, and these improvements and modifications should also be considered Be the protection scope of the present invention.

Claims (10)

1. One-way pumping type negative pressure stretch-reducing and scar-removing patch comprises a film and a flexible porous material layer, and is characterized in that it also includes a tension reducer, and the tension reducer includes two sub-films arranged oppositely on the left and right and a Tightening mechanism for controlling the distance between two sub-films; Both ends of the flexible porous material layer are respectively connected to the two sub-films; The film is covered on the periphery of the tension reducer; It also includes a one-way exhaust valve, the one-way exhaust valve is installed on the film or on the flexible porous material layer; The one-way exhaust valve includes a one-way ventilation film layer. 2. The one-way suction type negative pressure tension-reducing and scar-removing patch according to claim 1, wherein the one-way exhaust valve comprises an upper film layer arranged sequentially from top to bottom, the one-way valve Breathable membrane layer and lower membrane layer; The upper film layer and the lower film layer are provided with air holes arranged up and down; A one-way hole is opened on the one-way ventilation film layer, and one side of the one-way hole is connected with a shielding portion covering the one-way hole, and the shielding portion is located above the one-way hole; The outer edges of the upper membrane layer, the one-way ventilation membrane layer and the lower membrane layer are connected, and there is a diversion gap between the upper membrane layer and the one-way ventilation membrane layer. There is a diversion gap between the ventilation film layer and the lower film layer. 3. The one-way suction type negative pressure tension-reducing and scar-removing patch according to claim 2, wherein at least one of the underside of the upper film layer and the upper side of the one-way ventilation film layer with protrusions; At least one of the upper side of the lower membrane layer and the lower side of the one-way ventilation membrane layer is provided with a protrusion. 4. The one-way suction type negative pressure stretch-reducing and scar-removing patch according to claim 1, wherein the one-way exhaust valve comprises an upper film layer arranged sequentially from top to bottom, the one-way valve Breathable membrane layer and lower membrane layer; The upper film layer and the lower film layer are provided with air holes arranged up and down; A one-way hole is opened on the one-way ventilation film layer, and one side of the one-way hole is connected with a shielding portion covering the one-way hole, and the shielding portion is located above the one-way hole; The outer edges of the upper film layer, the one-way ventilation film layer and the lower film layer are connected; The pores of the lower film layer are provided with an auxiliary gap extending outward, and the auxiliary gap is located below the one-way hole; There is a diversion gap between the upper film layer and the one-way ventilation film layer. 5. The one-way suction type negative pressure reducing scar patch according to claim 1, wherein the flexible porous material layer comprises a flexible base layer and a silicone gel layer arranged up and down, and the flexible base layer is Sponge or polyurethane foam; The flexible porous material layer is provided with pores, and the flexible porous material layer is provided with at least three pore groups sequentially arranged from inside to outside, and the pore density of the outer pore group is greater than that of the inner pore group. 6. The one-way suction type negative pressure stretch-reducing and scar-removing patch according to claim 1, wherein the one-way exhaust valve comprises a first one-way ventilation film layer arranged in sequence from top to bottom, The second one-way ventilation film layer and the lower film layer; The first one-way ventilation film layer and the second one-way ventilation film layer are provided with arc-shaped slots correspondingly arranged up and down and arranged circumferentially; The center of the second one-way ventilation membrane layer and the lower membrane layer is provided with round holes correspondingly arranged up and down; The circular hole of the lower film layer is provided with a notch extending outward, the notch is located below the arc-shaped slit, and the width of the notch is smaller than the width of the arc-shaped slit. 7. The one-way suction type negative pressure tension-reducing and scar-removing patch according to any one of claims 2 to 5, characterized in that, the preparation method of the shielding part is on the one-way ventilation film layer A one-way hole bent outward in an arc shape is opened, and the area inside the one-way hole is stretched outward to form a shielding portion covering the one-way hole. 8. The one-way suction type negative pressure stretch-reducing and scar-removing patch according to claim 6, wherein said first one-way ventilating film layer is provided with an arc for forming said arc-shaped slit. The tearing line controls the opening size of the arc-shaped slit through the tearing degree of the arc-shaped tearing line. 9. The one-way suction type negative pressure stretch-reducing and scar-removing patch according to claim 6, further comprising an airflow adjustment mechanism, said airflow adjustment mechanism comprising a release paper layer and affixed on a release paper layer. Ring-shaped film on the paper layer; There are at least four ring-shaped films, and at least four ring-shaped films are arranged inside and outside; The ring-shaped film is used to stick on the upper side of the first one-way ventilation film layer, and partially covers the arc-shaped slit on the first one-way ventilation film layer. 10. The one-way pumping type negative pressure stretch-reducing and scar-removing patch according to claim 1, wherein said sticking film comprises a total sticking film and an auxiliary sticking film arranged up and down, The front and rear ends of the auxiliary film are provided with adhesive layers, the auxiliary film is pasted on the tightening mechanism and above the flexible porous material layer, and the one-way exhaust valve is installed on the auxiliary film ; An adhesive layer is provided on the periphery of the total film, and the total film covers the periphery of the auxiliary film and the periphery of the tension reducer; An upper opening where the air outlet of the one-way exhaust valve is exposed is opened in the center of the total film; The center of the auxiliary film is provided with a lower opening where the air inlet of the one-way exhaust valve is docked, and the one-way exhaust valve is sandwiched between the general film and the auxiliary film, and the one-way exhaust valve connecting the upper opening and the lower opening to the exhaust valve; It also includes a push-type exhaust mechanism, and the push-type exhaust mechanism is installed on the film; The push-type exhaust mechanism includes a support seat that conducts up and down, and an air intake cavity is provided on the periphery of the support seat, and an adjacent air storage cavity and the air intake cavity are provided on the support seat. The support seat is provided with a docking hole for docking the air storage chamber and the air intake chamber; The push-type exhaust mechanism also includes a button, a spring is installed between the button and the support seat, and when the button is pressed down, the docking hole is blocked; A one-way exhaust channel is opened on the button or the support base to connect with the air storage cavity, and a one-way valve is installed in the one-way exhaust channel.