Expansion device for skin burn plastic surgery

Abstract

The utility model relates to the technical field of medical instruments, in particular to an expansion device for skin burn plastic surgery, which comprises a water injection bag body provided with a water injection pipe for injecting water into the water injection bag body and a water injection channel arranged on the outer edge of the water injection bag body. The outline of the water injection channel is the same as that of the water injection bag body, when water is injected into the water injection channel to enable the water injection channel to be full, the water injection channel generates uniform outward opening acting force on the main body part of the water injection bag body, and wrinkles of the water injection bag body are smoothed; according to the utility model, the water injection channel is filled to smooth the phenomena of wrinkles and the like which possibly occur when the water injection bag body is placed on subcutaneous tissues, so that the operation effect is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of medical appliances, in particular to an expansion device for skin burn plastic surgery. Background Art

[0002] The expansion device used in burn plastic surgery is an expansion capsule buried under the skin, muscle, or fascia. After the incision heals, normal saline is injected into the expander through an injection pot to slowly expand the expansion capsule, and the surface skin is then expanded through the expansion capsule. In this process, the skin initially expands passively, which is a mechanical expansion. After a long time, a biological expansion will form. Biological expansion means that the skin gradually becomes larger and thinner, and there will be a lot more skin, which can be used to repair scars or transplanted to other places to replace bad skin with good skin.

[0003] From the perspective of the design of the capsule, its shape and material are usually designed to adapt to the characteristics of the subcutaneous tissue and surgical needs. However, when the capsule is actually placed subcutaneously, since water has not yet been injected, the capsule material is not elastic enough and it is difficult to naturally fit the shape of the subcutaneous tissue during placement, which makes wrinkles easy to appear. Moreover, when water is injected, water may first be injected into certain parts of the capsule, while the wrinkles may not be injected enough due to obstruction. This may lead to uneven pressure distribution inside the capsule and affect the overall effect of the operation.

[0004] Based on the above situation, it is necessary to design an expansion device for skin burn plastic surgery to solve the above problems. Utility Model Content

[0005] The utility model provides an expansion device for skin burn plastic surgery, which solves the problem in the prior art that an expansion capsule is prone to wrinkles when placed, thereby affecting the surgical effect.

[0006] The technical problem solved by the present invention is achieved by the following technical solutions:

[0007] An expansion device for skin burn plastic surgery includes a water-injected sac, which is provided with a water-injected tube for injecting water into the interior of the sac, and also includes a water-injected channel. The water-injected channel is provided at the outer edge of the sac, and the water-injected channel has the same contour as the sac. When water is injected into the water-injected channel to fill it, the water-injected channel generates a uniform outward expanding force on the main part of the sac, thereby smoothing out wrinkles on the sac.

[0008] Preferably, an elastic connecting portion is connected between the water injection sac and the water injection channel.

[0009] Preferably, a hollow closed structure is formed between the cross section of the elastic connecting portion and the water injection sac and the water injection channel.

[0010] Preferably, the water injection channel has a gradual elasticity characteristic, wherein the elasticity coefficient of the water injection channel portion close to the edge of the water injection bladder gradually increases toward the elasticity coefficient of the central area.

[0011] Preferably, a first water delivery channel is provided inside the water injection pipe, and a first sealing plug is provided in the first water delivery channel.

[0012] Preferably, two second water delivery channels are further provided inside the water injection pipe, the output ends of the two second water delivery channels are respectively located on both sides of the water injection pipe and are connected to the water injection channels, and a second sealing plug is provided inside the water injection pipe.

[0013] The beneficial effect of the present invention is that after the water injection balloon is placed into the subcutaneous tissue, water is first injected into the water injection channel. The injected water will fill up the water injection channel and form a circle of support structure on the periphery of the water injection balloon to prevent it from moving arbitrarily during subsequent operations or changes in the natural state of the tissue, thereby preventing it from folding and wrinkling. In addition, a uniform outward stretching force is generated on the main part of the water injection balloon, prompting the main part of the water injection balloon to extend to the surroundings as much as possible, gradually smoothing out wrinkles that have been formed or may be formed, thereby reducing the occurrence of wrinkles when the water injection balloon is used and improving the surgical effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] In order to more clearly illustrate the implementation scheme of the present invention or the technical scheme in the prior art, the drawings required for use in the implementation scheme or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some implementation schemes of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative labor.

[0015] Figure 1 This is an isometric structural diagram provided by the utility model;

[0016] Figure 2 The cross-sectional structure provided by the utility model is shown as follows: Figure 1 ;

[0017] Figure 3 The cross-sectional structure provided by the utility model is shown as follows: Figure 2 ;

[0018] Figure 4 The utility model provides Figure 3 A schematic diagram of the structure at center A;

[0019] Figure 5 It is a schematic diagram of the cross-sectional structure of the water injection pipe in the utility model.

[0020] In the figure, 1, water injection sac; 2, water injection pipe; 3, water injection channel; 4, elastic connecting part; 5, first water transfer channel; 51, first sealing plug; 6, second water transfer channel; 61, second sealing plug. DETAILED DESCRIPTION

[0021] In order to make the technical means, creative features, objectives and effects achieved by the present invention easier to understand, the present invention is further described below with reference to specific illustrations.

[0022] Reference Figure 1-Figure 5 As shown, an expansion device for skin burn plastic surgery includes a water injection balloon 1, which is provided with a water injection pipe 2 for injecting water into the water injection balloon 1, and also includes a water injection channel 3. The water injection channel 3 is provided on the outer edge of the water injection balloon 1, and the water injection channel 3 has the same outline as the water injection balloon 1. The shape and size of the water injection balloon 1 are not limited and can be customized according to the patient's burn site. Generally, it tries to meet the needs of the operation. When water is injected into the water injection channel 3 to fill it, the water injection channel 3 generates a uniform outward stretching force on the main part of the water injection balloon 1 to smooth out the wrinkles of the water injection balloon 1. Specifically, when in use, after the water injection balloon 1 is placed in the subcutaneous tissue, water is first injected into the water injection channel 3 on the circumferential side, which can be used together with the water injection balloon 1. The water in the water injection channel 3 is made of physiological saline, etc. The injected water will fill the water injection channel 3 first. At this time, compared with the case when no water is injected, it is equivalent to forming a circle of relatively rigid support structure on the periphery of the water injection balloon 1, which can initially fix the position of the water injection balloon 1 in the subcutaneous tissue to prevent it from moving arbitrarily during subsequent operations or changes in the natural state of the tissue, resulting in folding and wrinkles. As the amount of water in the water injection channel 3 increases, it will generate a uniform outward force on the main part of the water injection balloon 1, so that the water injection balloon 1 can effectively fill the space of the subcutaneous tissue, and in this process, the wrinkles that have been formed or may be formed can be gradually smoothed out, thereby minimizing the risk of wrinkles when the balloon is subcutaneous and improving the surgical effect.

[0023] Reference Figure 1-Figure 2 As shown, further, an elastic connecting part 4 is connected between the water injection sac 1 and the water injection channel 3, wherein the elastic connecting part 4 can be made of a material with good elasticity and flexibility such as medical silicone. When the water injection channel 3 is filled with water and generates a stretching force, the elastic connecting part 4 can play a role of buffering and regulation, so that the water injection sac 1 can be more naturally expanded as the water injection channel 3 is filled, avoiding local wrinkles on the water injection sac 1 due to stiff pulling of the connection part.

[0024] Among them, reference Figure 4As shown, a hollow closed structure is formed between the cross section of the elastic connecting portion 4 and the water injection sac 1 and the water injection channel 3, that is, a ring-shaped or square hollow closed structure can be formed between the cross section of the elastic connecting portion 4 and the water injection sac 1 and the water injection channel 3, and its two sides can be connected to the water injection sac 1 and the side wall of the water injection channel 3 respectively, which can also play a role in transmitting and buffering force between the two. During the water injection process, the force generated by the filling of the water injection channel 3 is transmitted to the sac more evenly, helping the sac to unfold more smoothly and avoid wrinkles.

[0025] Furthermore, the water injection channel 3 has an elastic gradient characteristic, wherein the elastic coefficient of the water injection channel 3 part close to the edge of the water injection balloon 1 gradually increases toward the elastic coefficient of the central area. When water is injected, the edge part of the water injection channel 3 with relatively small elasticity will be filled up first, playing a role similar to preliminary fixation and support of the water injection balloon 1, which can prevent the water injection balloon 1 from moving arbitrarily in the subcutaneous tissue to a certain extent. As the water injection continues, the central part can more forcefully support the main part of the water injection balloon 1 with greater elasticity, so that the water injection balloon 1 gradually and evenly expands from the edge to the center. This elastic change from the outside to the inside helps the water injection balloon 1 to better adapt to the subcutaneous tissue space and more effectively reduce the possibility of wrinkle formation. During the manufacturing process of the water injection channel 3, a polymer material with gradient change characteristics can be used to achieve the elastic gradient characteristic. During the molding process, the molecular structure of the material can present different cross-linking degrees or crystallinity in different regions by adjusting processing parameters such as temperature and pressure, thereby resulting in a change in the elastic coefficient.

[0026] Further, refer to Figure 5 As shown, a first water supply channel 5 is provided inside the water injection pipe 2, and a first sealing plug 51 is provided inside the first water supply channel 5. The water injection pipe 2 passes through the water injection channel 3 and the elastic connecting part 4 respectively, and separates the water injection channel 3 and the elastic connecting part 4 respectively. When injecting water, a syringe pillow or the like can be inserted into the first sealing plug 51 to inject water into the water injection bag 1.

[0027] Among them, as shown in reference 5, the interior of the water injection pipe 2 is further provided with two second water delivery channels 6, the output ends of the two second water delivery channels 6 are respectively located on both sides of the water injection pipe 2 and are connected to the water injection channel 3, and the interior of the water injection pipe 2 is provided with a second sealing plug 61. When water is injected into the water injection channel 3, after the syringe needle is inserted between the second sealing plug 61 and the first sealing plug 51, the water in the syringe can be injected into the water injection channel 3 from two directions through the two second water delivery channels 6. Water will flow to the middle from two directions at the same time, so that each part of the water injection channel 3 starts to fill almost at the same time, so that the water injection channel 3 around the water injection sac 1 is filled. At the same time, force is exerted in a relatively balanced manner in all directions of the water injection balloon 1, prompting the main part of the water injection balloon 1 to extend to the surroundings as much as possible, so that the entire water injection channel 3 evenly supports the water injection balloon 1, reducing the wrinkles of the water injection balloon 1 caused by the difference in channel filling, and when injecting water into the water injection balloon 1, it is necessary to first pierce the second sealing plug 61 with the needle of the syringe and then pierce the first sealing plug 51, and when injecting water into the water injection channel 3, it is only necessary to pierce the second sealing plug 61, and the first sealing plug 51 and the second sealing plug 61 can be made of rubber and other materials, which have good elasticity and self-sealing properties, and can avoid water leakage when the needle is pulled out.

[0028] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions are merely illustrative of the principles of the present invention. Various changes and improvements may be made to the present invention without departing from the spirit and scope of the present invention. Such changes and improvements are intended to fall within the scope of the present invention. The scope of protection claimed in this invention is defined by the appended claims and their equivalents.

Claims

1. An expansion device for skin burn plastic surgery, comprising a water injection sac (1), wherein the water injection sac (1) is provided with a water injection pipe (2) for injecting water into the water injection sac (1), characterized in that: The invention also includes a water injection channel (3), which is arranged at the outer edge of the water injection sac (1), and has the same outline as the water injection sac (1). When water is injected into the water injection channel (3) to fill it, the water injection channel (3) generates a uniform outward expansion force on the main part of the water injection sac (1), thereby smoothing out the wrinkles of the water injection sac (1).

2. The expansion device for skin burn plastic surgery according to claim 1, characterized in that: An elastic connecting portion (4) is connected between the water injection sac (1) and the water injection channel (3).

3. The expansion device for skin burn plastic surgery according to claim 2, characterized in that: A hollow closed structure is formed between the cross section of the elastic connecting portion (4), the water injection sac (1), and the water injection channel (3).

4. The expansion device for skin burn plastic surgery according to claim 1, characterized in that: The water injection channel (3) has a gradual elasticity characteristic, wherein the elastic coefficient of the water injection channel (3) portion close to the edge of the water injection sac (1) gradually increases toward the elastic coefficient of the central region.

5. The expansion device for skin burn plastic surgery according to claim 1, characterized in that: A first water delivery channel (5) is provided inside the water injection pipe (2), and a first sealing plug (51) is provided inside the first water delivery channel (5).

6. The expansion device for skin burn plastic surgery according to claim 1, characterized in that: Two second water delivery channels (6) are further provided inside the water injection pipe (2), and the output ends of the two second water delivery channels (6) are respectively located on both sides of the water injection pipe (2) and are connected to the water injection channel (3). A second sealing plug (61) is provided inside the water injection pipe (2).

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