Negative pressure protection patch used after fracture external fixation frame operation

Abstract

The utility model discloses a fracture external fixation frame postoperative negative pressure protection paste which sequentially comprises a skin sticking layer, a negative pressure layer, a negative pressure layer and a negative pressure layer from outside to inside, the negative pressure layer and the skin sticking layer are integrally formed, and the negative pressure layer covers the area defined by the inner ring of the skin sticking layer to form a negative pressure cavity; the containing opening is formed in the negative pressure layer in a penetrating mode; the air exhaust part is arranged on the negative pressure layer and is suitable for being connected with a disposable syringe so as to exhaust air in the negative pressure cavity outwards; the skin adhering layer and the negative pressure layer are arranged in an opening and closing manner, and are suitable for forming a gap to laterally penetrate through a bone needle to clamp the bone needle into the accommodating opening when being opened, and forming a negative pressure cavity to embed the bone needle into the wound surface of the skin to enclose and seal when being closed. According to the negative-pressure sterile wound dressing, a wound opening can be located in a negative-pressure sterile environment, bacterial growth is effectively inhibited, infection risks are reduced, wound healing is facilitated, frequent replacement is not needed, use is convenient, and certain time and energy can be saved.

Description

Technical Field

[0001] The utility model belongs to the technical field of medical care, and in particular relates to a negative pressure protective patch after fracture external fixation. Background Art

[0002] Fracture stent external fixation technology is a commonly used treatment technology in orthopedics. When the skin condition is not suitable for the use of steel plates, the fracture ends are usually fixed by using an external fixator. It is mainly done by drilling 2-3 holes at the distal and proximal ends of the fracture, and then inserting 2-3 fixed bone screws (needles) along the drilled holes. The bone screws exposed outside the body are then connected with connecting rods to form a stent, which is an effective external fixation for limb fractures.

[0003] After the bone screw is inserted into the drill hole, the wound is exposed to the outside air, so it is necessary to care for the wound to avoid infection. The traditional care method mainly relies on wet compress disinfection with alcohol gauze. This care method not only requires frequent replacement of gauze, which is troublesome, but also because the gauze is breathable, the wound is exposed to the air, which can easily lead to infection of the wound, which is not conducive to the healing of the wound. Utility Model Content

[0004] Therefore, the technical problem to be solved by the utility model is to overcome the problem that when the traditional bone screw fixation wound is disinfected by using alcohol gauze for wet compress, not only the gauze needs to be frequently replaced, which is troublesome, but also the gauze is breathable, which will expose the wound to the air, easily leading to infection of the wound and being not conducive to the healing of the wound.

[0005] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0006] A negative pressure protective patch for postoperative fracture external fixation, comprising, from outside to inside, an adhesive skin layer, a negative pressure layer, a accommodating port and an exhaust portion; the adhesive skin layer is arranged in a ring shape; the negative pressure layer is integrally formed with the adhesive skin layer, and covers the area surrounded by the inner ring of the adhesive skin layer to form a negative pressure cavity; the accommodating port is through-opened on the negative pressure layer; the exhaust portion is arranged on the negative pressure layer, suitable for connecting a disposable syringe to exhaust the air in the negative pressure cavity; the adhesive skin layer and the negative pressure layer are arranged in an open and closed shape, suitable for forming a gap when opening to laterally pass a bone needle and clamp the bone needle into the accommodating port, and forming a negative pressure cavity when closing to enclose and seal the wound where the bone needle is placed in the skin.

[0007] In an optional embodiment, one end of the sticky skin layer and the negative pressure layer that is open and closed is a covered end, and the other end is a covering end. The covering end is covered and bonded to the covered end and can be separated outward from the covered end. The covering end and the covered end are suitable for forming a gap when separated to allow the bone needle to pass laterally, and when they are covered and overlapped with each other, the gap formed at both ends of the sticky skin layer and the negative pressure layer is closed to form a negative pressure cavity.

[0008] In an optional embodiment, adhesive is provided at the bottom of the covering end of the adhesive layer and / or the top of the covered end, and adhesive is correspondingly provided at the position of the covering end of the negative pressure layer close to the edge and / or the covered end away from the edge.

[0009] In an optional embodiment, a release paper layer is attached to the positions where the adhesive is provided on the adhesive layer and the negative pressure layer, suitable for isolating the adhesive when the covering end is not covered and attached to the covered end.

[0010] In an optional embodiment, the accommodating opening protrudes upward to a preset height, and the accommodating opening is a trumpet-shaped structure with an upper diameter smaller than a lower diameter, and the side surface of the accommodating opening is arranged in an open and closed state consistent with the negative pressure layer, one end of the opening and closing state of the accommodating opening is a covered end, and the other end is a covering end, and the covering end is covered and bonded to the covered end and can be separated outward from the covered end.

[0011] In an optional embodiment, an annular adhesive layer is circumferentially provided on the inner wall of the receiving opening.

[0012] In an optional embodiment, the air extraction part includes an air extraction pipe connected to the negative pressure chamber, and a sealing rubber plug is provided in the air extraction pipe.

[0013] In an optional implementation, the exhaust pipe is a hose.

[0014] Compared with the prior art, the technical solution of the utility model has the following advantages:

[0015] 1. The utility model arranges the adhesive skin layer and the negative pressure layer into an openable and closable structure, so that a gap is formed when opening, so that the entire protective patch can pass through the bone needle from the side and cover the top of the wound opening; when closing, the covering end at one end is bonded to the covered end at the other end, so that the adhesive skin layer and the negative pressure layer can surround the wound opening in a closed environment, and then the air in the negative pressure cavity formed by the negative pressure layer is extracted out by connecting a disposable syringe to the outside through the action of the suction part, so that the wound opening is in a negative pressure sterile environment, which effectively inhibits bacterial growth, reduces the risk of infection, is beneficial to wound healing, and is not prone to complications such as scar healing and osteomyelitis. Moreover, the protective patch does not need to be frequently replaced within a certain period of time, is relatively convenient to use, and can save a certain amount of time and energy.

[0016] 2. The utility model sets a trumpet-shaped structure for the accommodating port. When the air in the negative pressure chamber is drawn out, the trumpet-shaped side wall will gradually fit onto the bone needle until it is completely fitted onto the bone needle. Since the trumpet-shaped opening has a certain height, a fitting surface with a certain height will be formed when it is fully fitted onto the bone needle, thereby increasing the sealing distance from the top of the accommodating port to the negative pressure chamber. It is not easy for the outside air to flow into the negative pressure chamber through the gap between the bone needle and the accommodating port, and the sealing effect is better.

[0017] 3. The utility model provides a sealing rubber plug in the air extraction pipe. When the air in the negative pressure chamber needs to be extracted out, the needle of the disposable syringe punctures the sealing rubber plug and is directly inserted into the negative pressure chamber to extract air. Since the sealing rubber plug has good elasticity, it can automatically shrink to seal the puncture port after puncture. Therefore, it is not easy for the outside air to enter the negative pressure chamber through the puncture port after the syringe puncture. The sealing effect is good, and the use of the sealing rubber plug can greatly reduce the cost of the entire protective patch production and simplify the production process, which is suitable for industrial production. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a schematic diagram of the structure of the utility model of the negative pressure protective patch of the fracture external fixator after surgery when it is closed;

[0019] Figure 2 This is a schematic diagram of the structure of the utility model fracture external fixator when the negative pressure protective patch is opened after surgery;

[0020] Figure 3 for Figure 1 The structural diagram at A in the middle;

[0021] Figure 4 for Figure 2 Schematic diagram of the structure at B in the middle;

[0022] Wherein, the accompanying drawings are marked as follows:

[0023] 1. Adhesive layer; 2. Negative pressure layer; 3. Covering end; 4. Receiving port; 5. Exhaust pipe; 6. Covered end; 61. Adhesive. DETAILED DESCRIPTION

[0024] In order to enable those skilled in the art to better understand the solution of the present application, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0025] Combine the following Figures 1 to 4 , describing an embodiment of the utility model.

[0026] The present embodiment discloses a negative pressure protective patch for postoperative fracture external fixation, which comprises, from outside to inside, an adhesive skin layer 1, a negative pressure layer 2, a accommodating port 4 and an exhaust portion; the adhesive skin layer 1 is arranged in a ring shape; the negative pressure layer 2 is integrally formed with the adhesive skin layer 1, and covers the area above the area surrounded by the inner ring of the adhesive skin layer 1 to form a negative pressure cavity; the accommodating port 4 is through-opened on the negative pressure layer 2; the exhaust portion is arranged on the negative pressure layer 2, and is suitable for connecting a disposable syringe to extract the air in the negative pressure cavity outwards; the adhesive skin layer 1 and the negative pressure layer 2 are arranged in an open and closed shape, suitable for forming a gap when opening to laterally pass the bone needle and clamp the bone needle into the accommodating port 4, and forming a negative pressure cavity when closed to enclose and seal the wound where the bone needle is inserted into the skin.

[0027] In the above embodiment, the adhesive layer 1 and the negative pressure layer 2 are arranged to be openable and closable, and a gap is formed when opened to facilitate the entire protective patch to pass through the bone needle from the side and cover the wound opening. When closed, the covering end at one end is bonded to the covered end at the other end, so that the adhesive layer 1 and the negative pressure layer 2 can enclose the wound opening in a closed environment. Afterwards, through the action of the vacuum part, a disposable syringe is connected externally to extract the air in the negative pressure cavity formed by the negative pressure layer 2, so that the wound opening is in a negative pressure sterile environment, which effectively inhibits bacterial growth, reduces the risk of infection, is conducive to wound healing, and is not prone to complications such as scar healing and osteomyelitis. Moreover, the protective patch does not need to be frequently replaced within a certain period of time, is relatively convenient to use, and can save a certain amount of time and energy.

[0028] In the above embodiment, there is a layer of adhesive at the bottom end of the adhesive layer 1, through the action of this layer of adhesive, the adhesive layer 1 can be attached to the wound surface and the wound can be enclosed, the adhesive layer 1 and the negative pressure layer 2 are made of silicone material and are transparent, the silicone material is a soft plastic material, the negative pressure layer 2 can be designed to have an arc-shaped structure, which is convenient for the air in the negative pressure cavity to be smoothly concave downward when it is drawn out, the adhesive layer 1 and the negative pressure layer 2 are in a discontinuous state, also a state of disconnection, the adhesive layer 1 and the negative pressure layer 2 can be opened to both sides, the gap formed after opening can pass through the bone needle from the side to cover the top of the wound, and after passing through the bone needle, the bone needle will be stuck to the accommodating port 4 That is, the bone needle is vertically penetrated through the accommodating port 4 on the protective patch, so that the protective patch will cover the top of the wound to surround the wound, and after passing through the bone needle from the side, the adhesive layer 1 will be attached to the skin around the wound, and then the gap will be covered and sealed, so that the negative pressure cavity formed by the negative pressure layer 2 will cover the wound where the bone needle is inserted into the skin, and the adhesive layer 1 and the negative pressure layer 2 can surround the wound, and then the air in the negative pressure cavity is extracted from the exhaust part through a disposable syringe, so that the area surrounded by the negative pressure layer 2 can form a negative pressure space, so that the wound is in a negative pressure environment, and it is not easy to be infected.

[0029] In an optional embodiment, one end of the adhesive layer 1 and the negative pressure layer 2 that is open and closed is the covered end 6, and the other end is the covering end 3. The covering end 3 is covered and bonded to the covered end 6 and can be separated outward from the covered end 6. The covering end 3 and the covered end 6 are suitable for forming a gap when separated to allow the bone needle to pass laterally, and when they are covered and superimposed on each other, the gap formed at both ends of the adhesive layer 1 and the negative pressure layer 2 is closed to form a negative pressure cavity.

[0030] Furthermore, adhesive is provided at the bottom end of the covering end 3 of the adhesive layer 1 and the top end 6 of the covered end, and adhesive is correspondingly provided at the position of the covering end 3 of the negative pressure layer 2 close to the edge and the covered end 6 away from the edge. Through the action of the adhesive, the covering end 3 can be adhered to the covered end 6 so that the entire protective sticker changes from an open state to a closed state, which is more convenient to use. Moreover, since the covering end 3 covers a wider range, the open and closed end faces of the adhesive layer 1 are tightly sealed, and air is not easy to flow in from the opening and closing, and the sealing effect is better.

[0031] Furthermore, a release paper layer is attached to the position where the adhesive is provided on the adhesive layer 1 and the negative pressure layer 2, which is suitable for isolating the adhesive when the covering end 3 is not covered and adhered to the covered end 6. The protective patch is in an open state as a whole before use, and a layer of release paper is adhered to the area where the adhesive is provided to cover the adhesive. When in use, the entire protective patch is wrapped around the bone needle, and then the release paper on the bottom end of the adhesive layer and the covering end 3 and the covered end 6 is torn off, and then the portion of the adhesive layer 1 between the covered end 6 and the covering end 3 is adhered to the skin around the wound, and then the adhesive layer 1 and the covering end 3 of the negative pressure layer 2 are adhered to the covered end 6 so that the entire protective patch forms a closed state.

[0032] In the above embodiment, the adhesive layer 1 and the negative pressure layer 2 have two end surfaces. Under normal conditions, the adhesive layer 1 and the negative pressure layer 2 are in a discontinuous disconnected state, and the end surface of the covering end 3 is superimposed on the end surface of the covered end 6. Before the entire protective sticker is used, that is, in the open state, the end surface of the covering end 3 covers the end surface of the covered end 6, and is in a separated state from the end surface of the covered end 6. The gap formed between the two is used to pass the bone needle. When closing is required, the end surface of the covering end 3 is directly adhered to the end surface of the covered end 6 to form a whole.

[0033] In an optional embodiment, the accommodating port 4 protrudes upward to a preset height, and the accommodating port 4 is a trumpet-shaped structure with an upper diameter smaller than a lower diameter, and the side of the accommodating port 4 is arranged in an open and closed state consistent with the negative pressure layer 2, one end of the open and closed state of the accommodating port 4 is a covered end 6, and the other end is a covering end 3, and the covering end 3 is covered and bonded to the covered end 6 and can be separated outwardly relative to the covered end 6, and the side of the accommodating port 4 is connected as a whole with the negative pressure layer 2, and the position of the open and closed end face is consistent with the adhesive layer 1 and the negative pressure layer 2, that is, when the adhesive layer 1 and the negative pressure layer 2 are opened, the side of the accommodating port 4 will also be separated outwardly.

[0034] Preferably, an annular adhesive layer is circumferentially provided on the inner wall of the accommodating opening 4, so that the accommodating opening 4 can fit tightly on the bone needle when it shrinks inwards, further improving the sealing performance.

[0035] In the above embodiment, by setting the accommodating port 4 to a trumpet-shaped structure, when the air in the negative pressure chamber is pumped out, the trumpet-shaped side wall will gradually fit onto the bone needle until it is completely fitted onto the bone needle. Since the trumpet-shaped opening has a certain height, a fitting surface with a certain height will be formed when it is fully fitted onto the bone needle, thereby increasing the sealing distance from the top of the accommodating port 4 to the negative pressure chamber, and it is not easy for the outside air to flow into the negative pressure chamber through the gap between the bone needle and the accommodating port 4, thereby achieving a better sealing effect.

[0036] In the above embodiment, when in use, the gap between the covering end 3 and the covered end 6 is enlarged, and then the bone needle is passed laterally so that the bone needle is stuck in the accommodating port 4, and then the covering end 3 and the covered end 6 are bonded together, so that the entire protective cover is arranged above the wound of the bone needle, and then the air in the negative pressure chamber is extracted out through a disposable syringe. During the extraction process, the trumpet-shaped accommodating port 4 will gradually shrink to the side wall of the bone needle to seal the gap between the bone needle and the accommodating port 4.

[0037] In an optional implementation, the air extraction part includes an air extraction pipe 5 connected to the negative pressure chamber, and a sealing rubber plug is provided in the air extraction pipe 5. Preferably, the air extraction pipe 5 is a hose.

[0038] In the above embodiment, by providing a sealing rubber plug in the exhaust pipe 5, when the air in the negative pressure chamber needs to be extracted out, the needle puncture sealing rubber plug of the disposable syringe is directly inserted into the negative pressure chamber to evacuate the air. Since the sealing rubber plug has good elasticity, it can automatically shrink to seal the puncture port after puncture. Therefore, it is not easy for the outside air to enter the negative pressure chamber from the puncture port after the syringe puncture. The sealing effect is good, and the use of the sealing rubber plug can greatly reduce the cost of the entire protective patch production and simplify the production process, which is suitable for industrial production.

[0039] Although the present invention has been described using the above preferred embodiments, it is not intended to limit the scope of protection of the present invention. Any person skilled in the art may make various changes and modifications to the above embodiments without departing from the spirit and scope of the present invention, and the changes and modifications still fall within the scope of protection of the present invention.

Claims

1. A negative pressure protective patch for fracture external fixation after surgery, characterized in that: From outside to inside, it includes: The sticky skin layer is arranged in a ring shape; A negative pressure layer is formed integrally with the skin-sticking layer and covers the area enclosed by the inner ring of the skin-sticking layer to form a negative pressure cavity; A receiving port is provided through the negative pressure layer; An air extraction part, arranged on the negative pressure layer, suitable for connecting a disposable syringe to extract the air in the negative pressure cavity; The skin-adhesive layer and the negative pressure layer are arranged in an open and closed state, which is suitable for forming a gap when opening to pass the bone needle laterally and clamp the bone needle into the accommodating port, and forming a negative pressure cavity when closing to enclose and seal the wound where the bone needle is placed in the skin.

2. The negative pressure protective patch for fracture external fixation after surgery according to claim 1, characterized in that: One end of the open and closed state of the sticky skin layer and the negative pressure layer is a covered end, and the other end is a covering end. The covering end is covered and bonded to the covered end and can be separated outward from the covered end. The covering end and the covered end are suitable for forming a gap when separated to allow the bone needle to pass laterally. When they cover and overlap each other, the gap formed at both ends of the sticky skin layer and the negative pressure layer is closed to form a negative pressure cavity.

3. The negative pressure protective patch for fracture external fixation after surgery according to claim 2, characterized in that: Adhesive is provided at the bottom of the covering end of the adhesive layer and / or the top of the covered end, and adhesive is provided at the position close to the edge of the covering end of the negative pressure layer and / or the position away from the edge of the covered end.

4. The negative pressure protective patch for fracture external fixation after surgery according to claim 3, characterized in that: Release paper layers are attached to the positions where the adhesive is provided on the adhesive layer and the negative pressure layer, and are suitable for isolating the adhesive when the covering end is not covered and attached to the covered end.

5. The negative pressure protective patch for fracture external fixation after surgery according to claim 1, characterized in that: The accommodating opening protrudes upward to a preset height, and is a trumpet-shaped structure with an upper diameter smaller than a lower diameter. The side surface of the accommodating opening is arranged in an open and closed state in accordance with the negative pressure layer. One end of the opening and closing state of the accommodating opening is a covered end, and the other end is a covering end. The covering end is covered and bonded to the covered end and can be separated outward from the covered end.

6. The negative pressure protective patch for fracture external fixation after surgery according to claim 5, characterized in that: An annular adhesive layer is circumferentially provided on the inner wall of the receiving opening.

7. The negative pressure protective patch for fracture external fixation after surgery according to claim 1, characterized in that: The air extraction part comprises an air extraction pipe communicated with the negative pressure chamber, and a sealing rubber plug is built into the air extraction pipe.

8. The negative pressure protective patch for fracture external fixation after surgery according to claim 7, characterized in that: The air extraction pipe is a hose.

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