A film device for negative pressure suction

Abstract

This utility model relates to a film-applying device for negative pressure suction, comprising a rubber ring for engaging with a metal guide pin of an external fixation device, and a connecting film wrapped around the rubber ring. The inner side of the connecting film is coated with adhesive and is generally funnel-shaped, with its upper end connected to the rubber ring and its lower end bonded to the main film. A supplementary film is provided at the junction of the connecting film and the main film, and a third inner film is provided at the contact position between the inner side of the connecting film and the main film. The rubber ring of this utility model is tightly clamped onto the metal guide pin, and the funnel-shaped connecting film, with its upper end connected to the rubber ring and its lower end connected to the main film, enables a seal between the rubber ring and the main film. The supplementary film provides further sealing. This device can be used for sealing materials when using a negative pressure suction device on wounds related to external fixation devices, shortening the application time, preventing air or fluid leakage, improving the efficiency of film application, and reducing the probability of film repair.

Description

Technical Field

[0001] This utility model relates to a film-applying device for negative pressure suction. Background Technology

[0002] With the development of modern society and the widespread use of modern machinery such as automobiles and machine tools, fractures and wounds are becoming increasingly common due to various reasons. Generally, fracture repair is divided into two techniques: intramedullary fixation and external fixation. However, when a fracture is accompanied by a wound, intramedullary fixation may lead to deep infection due to wound contamination. Therefore, external fixation is often used, allowing the wound to heal primarily. If necessary, secondary fixation can be performed electively. Negative pressure wound therapy is a commonly used technique for wound repair. It provides a closed, moist healing environment for the wound, promoting vascularization, reducing wound size, relieving pain, isolating external bacteria, and preventing cross-infection. However, when an external fixator and a wound coexist, the presence of the fixator causes several inconveniences when applying the negative pressure material film, as follows: 1. The main film needs to wrap around each metal guide needle separately, which is inconvenient; 2. The main film and the metal fixator are not easy to adhere, and the poor sealing of the film leads to air and liquid leakage; 3. The main film and the metal guide needles have poor adhesion and are prone to separation, and the metal fixator can easily puncture the film, compromising the sealing and requiring repeated repairs. Utility Model Content

[0003] The technical problem to be solved by this utility model is to provide a film-applying device for negative pressure suction, which can be used to seal the metal guide needle and the main film when using a negative pressure suction device on wounds related to external fixation brackets, so as to avoid air or liquid leakage.

[0004] The technical solution adopted in this utility model is:

[0005] A film-applying device for negative pressure suction includes a rubber ring for engaging with a metal guide pin of an external fixation bracket and a connecting film wrapped around the rubber ring. The inner side of the connecting film is coated with adhesive and is generally funnel-shaped. Its upper end is connected to the rubber ring and its lower end is bonded to the main film. A supplementary film is provided at the junction of the connecting film and the main film, and a third inner film is provided at the contact position between the inner side of the connecting film and the main film.

[0006] Furthermore, the rubber ring includes a rubber ring body, a first connecting plate disposed at one end of the rubber ring body, a second connecting plate disposed at the other end of the rubber ring body, and a buckle structure correspondingly disposed on the first and second connecting plates. The first connecting plate is located at the outer end of the rubber ring body, and the second connecting plate is located at the inner end of the rubber ring body.

[0007] Furthermore, the buckle structure includes a snap-fit ​​portion disposed on the first connecting plate and a snap-fit ​​groove disposed on the second connecting plate. The snap-fit ​​groove is adapted to the snap-fit ​​portion, and after the buckle structure is engaged, the rubber ring forms a complete ring.

[0008] Furthermore, a sealing ring is embedded on the inner wall of the rubber ring.

[0009] Furthermore, the radial cross-section of the connecting film is a 4 / 3 ring, one end of the connecting film is aligned with the end of the rubber ring near the second connecting plate, and the other end of the connecting film is a free end used to cover the outside of one end of the connecting film. A first inner film covers the inside of the free end of the connecting film.

[0010] Furthermore, an outer film is covered on the outer surface of the connecting film, the outer film including a first outer film and a second outer film, the first outer film corresponding to the first inner film.

[0011] Furthermore, pull tabs are provided at the edges of the first outer membrane, the second outer membrane, and the first inner membrane.

[0012] Furthermore, a central film is provided on the inner side of the supplementary film, and side films are provided on both sides of the central film. The two sides of the central film overlap with the inner sides of the two side films and cover the two side films. A pull tab is provided on both the central film and the side films, and a supplementary outer film is provided on the outer side of the supplementary film.

[0013] The positive effects of this utility model are:

[0014] The rubber ring of this invention is tightly clamped onto the metal guide needle, and the connecting film is funnel-shaped, with its upper end connected to the rubber ring and its lower end connected to the main film. This enables a seal between the rubber ring and the main film. The supplementary film is used to achieve a further seal. It can be used for sealing materials when using negative pressure suction devices on wounds related to external fixation brackets, shortening the film application time, avoiding air or liquid leakage, improving the efficiency of film application, and reducing the probability of film repair. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the structure of this utility model;

[0016] Figure 2 This is a schematic diagram of the rubber ring structure of this utility model;

[0017] Figure 3 This is a supplementary schematic diagram of the film-coating structure for this utility model;

[0018] Figure 4 This is a schematic diagram of the connecting film structure of this utility model;

[0019] Figure 5This is a schematic diagram of the inner side of the connecting film of this utility model in its unfolded state. Detailed Implementation

[0020] As attached Figure 1-5 As shown, this utility model discloses a film-applying device for negative pressure suction, including a rubber ring 1, a connecting film 3, and a supplementary film 4. The inner side of the connecting film 3 is coated with adhesive, and an outer film covers its outer side. The upper end of the connecting film 3 is connected to the rubber ring 1, and the lower end is bonded to the main film of the negative pressure suction film. The supplementary film 4 is bonded to the edge of the connecting film 3 at the connection position with the main film, and is used to repair the gap between the connecting film 3 and the main film, so that the two are more firmly bonded and to prevent air and liquid leakage.

[0021] The rubber ring 1 includes an open rubber ring body 101, a first connecting plate 102 disposed on one end face of the rubber ring body 101, a second connecting plate 104 disposed on the other end face of the rubber ring body 101, and a snap-fit ​​structure correspondingly disposed on the first and second connecting plates. The first and second connecting plates are staggered, and the snap-fit ​​structure is disposed on the connecting surface of the two. Preferably, the first connecting plate 102 is located at the outer end of the rubber ring body 101, and the second connecting plate 104 is located at the inner end of the rubber ring body 101. Both the first and second connecting plates are arc-shaped so that they can cooperate with each other. The snap-fit ​​structure includes a snap-fit ​​part 103 disposed on the inner sidewall of the first connecting plate 102 and a snap-fit ​​groove 105 disposed on the second connecting plate 104. The snap-fit ​​groove 105 cooperates with the snap-fit ​​part 103 so that the rubber ring 1 forms a complete ring after the snap-fit ​​structure is fastened. Depending on the outer diameter of the metal guide needle, various supplementary sizes of rubber ring 1 can be prepared so that the rubber ring 1 can achieve a sealed connection with the metal guide needle after being installed.

[0022] To further improve the sealing effect, a sealing ring 2 is provided on the inner wall of the rubber ring 1. The rubber ring 1 can be cylindrical or trumpet-shaped.

[0023] The radial cross-section of the connecting film 3 is 4 / 3 annular. Specifically, one end of the connecting film 3 is aligned with the end of the rubber ring 1 near the second connecting plate 104 as a fixed end, and then wraps around the rubber ring 1. The connecting film 3 can completely wrap along the outer wall of the rubber ring 1, and after wrapping one turn, there is an additional 1 / 3 portion as a free end. This free end portion continues to wrap along the rubber ring 1 and covers the fixed end of the connecting film 3. For ease of operation, a first inner film 5 is covered on the inner surface of the free end of the connecting film 3. When using it, the first inner film 5 is torn off before the bonding work is carried out.

[0024] Preferably, a third inner film 9 is provided at the contact position between the inner side of the connecting film 3 and the main film. The first inner film 5 is located on one side of the third inner film 9. An outer film 6 is covered on the outer side of the connecting film 3. The outer film 6 includes a first outer film and a second outer film. The first outer film corresponds to the first inner film 5, and the second outer film covers the other parts of the outer side of the connecting film 3. When the free end of the connecting film 3 is bonded, the first inner film 5 and the first outer film must be removed simultaneously. After bonding, the second outer film is removed. The connection between the connecting film 3 and the rubber ring 1 can be prefabricated at the factory, or a second inner film 8 can be provided at the top of the inner side of the connecting film 3 corresponding to the rubber ring 1. The second inner film 8 and the third inner film 9 are set in equal proportion. When in use, the second inner film 8 is torn open to bond the connecting film 3 and the rubber ring 1 together.

[0025] The inner side of the supplementary film 4 is covered by a central film 401, and side films 402 are provided on both sides of the central film 401. The left and right sides of the central film 401 overlap with and cover the inner sides of the two side films 402. At the same time, a supplementary outer film is covered on the outer side of the supplementary film 4. In use, first tear off the smaller central film 401 for adhesion to fix the position and prevent slippage and displacement, then remove the side films 402 for complete adhesion, and finally remove the supplementary outer film.

[0026] Preferably, pull tabs 7 are provided on the first inner film 5, the second inner film 8, the third inner film 9, the first outer film, the second outer film, the middle film 401, and the side film 402 to facilitate tearing and removal. Before bonding, the corresponding inner film must be manually removed. The outer film 6 and the supplementary outer film can also be made of a material with a certain degree of rigidity to provide some support and ensure the shape of the connecting film 3 and the supplementary film 4.

[0027] The operation process of this utility model is as follows:

[0028] (1) This utility model is applicable to wound debridement combined with negative pressure suction treatment. After routine surgical debridement, the wound is covered with negative pressure suction material (polyurethane or polyethylene material), and the bottom of the metal guide needle can be covered in a circumferential manner. Except for the metal guide needle, the surface of the negative pressure material completely covers the main film and extends more than 2cm outside the wound to connect with normal tissue;

[0029] (2) Insert the rubber ring 1 into the metal guide pin of the external fixation bracket through the opening, and after fastening the buckle, completely wrap around and close the metal guide pin;

[0030] (3) Remove the third inner film 9 at the flared end of the connecting film 3, connect the rubber ring 1 to the main film, peel off the first inner film 5 and the first outer film, and bond the two together. Finally, remove the second outer film (if it is necessary to connect the rubber ring 1 and the connecting film 3 on site, the second inner film 8 must be removed first, the connecting film 3 must be bonded to the rubber ring 1, and then the connection operation with the main film can be carried out).

[0031] (4) Remove the middle film 401 on the inner side of the supplementary film 4, apply it to the gap between the connecting film 3 and the main film, then remove the side films 402 on both sides in turn, and finally remove the outer protective layer to completely seal the connecting film 3 and the main film and prevent air leakage at the seam.

[0032] (5) After completely sealing the negative pressure suction material, install and connect the negative pressure suction device, test that the negative pressure is good and the drainage is smooth. The operation is over.

[0033] The rubber ring 1 of this invention can fit tightly with the metal guide needle without leaving gaps. The rubber ring 1 and the main body film are sealed together by the connecting film 3. By repairing the gap between the connecting film and the main body film with a supplementary film, a tight seal can be achieved between the metal guide needle and the main body film. This effectively shortens the film application time, prevents air or liquid leakage, improves film application efficiency, and reduces the probability of film repair. This invention is rationally designed, simple to operate, and has significant innovation and clinical applicability.

[0034] The above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this utility model.

Claims

1. A film-applying device for negative pressure suction, characterized in that... It includes a rubber ring (1) for cooperating with the metal guide pin of the external fixation bracket and a connecting film (3) wrapped around the rubber ring (1). The inner side of the connecting film (3) is coated with adhesive and is flared in shape. Its upper end is connected to the rubber ring (1) and its lower end is bonded to the main film. A supplementary film (4) is provided at the junction of the connecting film (3) and the main film. A third inner film (9) is provided at the contact position between the inner side of the connecting film (3) and the main film.

2. The film-applying device for negative pressure suction according to claim 1, characterized in that... The rubber ring (1) includes a rubber ring body (101), a first connecting plate (102) disposed at one end of the rubber ring body (101), a second connecting plate (104) disposed at the other end of the rubber ring body (101), and a buckle structure disposed on the first connecting plate (102) and the second connecting plate (104) respectively. The first connecting plate (102) is located at the outer end of the rubber ring body (101), and the second connecting plate (104) is located at the inner end of the rubber ring body (101).

3. A film-applying device for negative pressure suction according to claim 2, characterized in that... The buckle structure includes a snap-fit ​​part (103) provided on the first connecting plate (102) and a snap-fit ​​groove (105) provided on the second connecting plate (104). The snap-fit ​​groove (105) is adapted to the snap-fit ​​part (103). After the buckle structure is engaged, the rubber ring (1) forms a complete ring.

4. A film-applying device for negative pressure suction according to claim 1, characterized in that... A sealing ring (2) is embedded on the inner wall of the rubber ring (1).

5. A film-applying device for negative pressure suction according to claim 2, characterized in that... The radial cross section of the connecting film (3) is a 4 / 3 ring. One end of the connecting film (3) is aligned with the end of the rubber ring (1) near the second connecting plate (104). The other end of the connecting film (3) is a free end used to cover the outside of one end of the connecting film (3). A first inner film (5) is covered on the inside of the free end of the connecting film (3).

6. A film-applying device for negative pressure suction according to claim 5, characterized in that... An outer film (6) is covered on the outer surface of the connecting film (3). The outer film (6) includes a first outer film and a second outer film, and the first outer film corresponds to the first inner film (5).

7. A film-applying device for negative pressure suction according to claim 5 or 6, characterized in that... Fasteners (7) are provided at the edges of the first outer membrane, the second outer membrane, and the first inner membrane (5).

8. A film-applying device for negative pressure suction according to claim 1, characterized in that... A central film (401) is provided on the middle of the inner side of the supplementary film (4), and side films (402) are provided on both sides of the central film (401). The two sides of the central film (401) overlap with the inner sides of the two side films (402) and cover the two side films (402). A pull strip (7) is provided on both the central film (401) and the side films (402). At the same time, a supplementary outer film is provided on the outer side of the supplementary film (4).

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