Expansion flap blood supply training device

Abstract

The utility model relates to an expanded flap blood supply training device, which belongs to the field of medical instruments and comprises a C-shaped base matched with the edge contour of an expanded flap, fixing rings are symmetrically and fixedly connected to the outer walls of the two opposite sides of the C-shaped base, and fixing belts are inserted into the fixing rings in a penetrating manner. The device has the advantages that during manufacturing of the device, 3D scanning needs to be independently carried out on each expansion flap, then 3D printing is carried out on the designed device, it is guaranteed that the C-shaped base can be highly matched with the edge skin of the expansion flap, the outline of the C-shaped base is tightly attached to the edge of the expansion flap, then the fixing band is inserted into the fixing ring in a penetrating mode, and the fixing band is fixed to the edge of the expansion flap. The C-shaped base is fixed to the body of a patient through binding of the fixing band, the C-shaped base deeply presses the edge skin of the expanded flap to block blood supply, new blood supply establishment of the pedicle of the expanded flap is promoted, the device is repeatedly worn every day, and after a period of time, the effect of improving the blood supply of the expanded flap can be achieved; and the occurrence rate of flap blood supply disorder during operation is reduced.

Description

Technical Field

[0001] The utility model relates to the field of medical appliances, in particular to a training device for expanding the blood circulation of skin flaps. Background Art

[0002] A skin flap refers to the skin with blood supply and its attached subcutaneous adipose tissue. Skin flap transplantation is the main technique for wound repair and organ reconstruction in plastic surgery. Among them, the pedicled skin flap is the most commonly used method of skin flap transfer: when a skin flap is transferred from the donor area to the recipient area, a part of the tissue of the pedicled skin flap must be connected to the donor area to supply blood to the skin flap, which is called the pedicle. Whether the blood supply of the pedicle is rich or not greatly affects whether the skin can survive. After the skin flap is transferred to the recipient area, blood vessels will grow into the skin flap again to establish a new blood circulation. The pedicle can be selected to be resected or not.

[0003] The biggest risk of skin flap surgery is the blood circulation disorder caused by insufficient blood supply of the pedicle after transfer. Once the skin flap shows blood circulation disorder, it will lead to pigmentation at least, affecting the appearance effect, and necrosis of the skin flap at worst, resulting in the failure of the surgery.

[0004] In the prior art, skin flap delay surgery is mainly used to increase the blood supply of the pedicle, improve the blood circulation of the skin flap, and improve the survival rate of the skin flap. The basic process of skin flap delay surgery is: an additional surgery is performed before the formal skin flap transfer surgery. During the surgery, the skin and subcutaneous tissue at the edge of the skin flap are incised, while the skin structure of the pedicle is kept intact. In this way, the blood supply at the edge of the skin flap is severed, resulting in the reconstruction of the blood vessels in the pedicle of the skin flap, increasing the blood supply of the pedicle and the blood circulation of the whole skin flap, and improving the survival rate of the skin flap. However, the skin flap delay surgery increases the number of surgeries, the pain of the patient and the economic burden. Summary of the Utility Model

[0005] The technical problem to be solved by the utility model is to provide a non-surgical training device that can be operated by the patient himself and can improve the blood circulation of the skin flap.

[0006] The technical solution of the utility model to solve the above technical problem is as follows: A training device for expanding the blood circulation of skin flaps includes a C-shaped base that fits the contour of the edge of the expanded skin flap. Fixed rings are symmetrically and fixedly connected to the outer walls of the opposite sides of the C-shaped base, and a fixing belt is inserted through the fixed rings.

[0007] The beneficial effect of the utility model is that after the patient wears the device, the contour of the C-shaped base fits tightly with the edge of the expanded skin flap, and then the fixing belt is inserted into the fixing ring, and the C-shaped base is fixed to the patient by tying the fixing belt, so that the C-shaped base deeply presses the skin at the edge of the expanded skin flap to block the blood supply, causing the skin flap to enter an ischemic state, which will promote the establishment of new blood supply at the pedicle of the expanded skin flap. Wearing the device repeatedly many times a day for a period of time can improve the blood supply of the expanded skin flap and reduce the incidence of blood supply disorders and skin flap necrosis rate after flap transfer.

[0008] On the basis of the above technical solution, the present invention can also be improved as follows.

[0009] Furthermore, a crossbeam for reinforcing the C-shaped base is arranged above the C-shaped base.

[0010] The beneficial effect of adopting the above further solution is that the crossbeam can reinforce the C-shaped base to prevent the C-shaped base from being squeezed and deformed when the fixing belt is tied.

[0011] Furthermore, two ends of the crossbeam are respectively fixedly connected to two end portions of the C-shaped base.

[0012] The beneficial effect of adopting the above further solution is that the crossbeam is perpendicular to the two ends of the C-shaped base, and the force form is better.

[0013] Furthermore, the number of the crossbeams is two.

[0014] The beneficial effect of adopting the above further solution is that the two cross beams are better stressed and less likely to deform.

[0015] Furthermore, the number of fixing rings on one side of the C-shaped base is two.

[0016] The beneficial effect of adopting the above further solution is that there are four fixing rings on both sides, which can fix the C-shaped base more stably.

[0017] Furthermore, the C-shaped base, the fixing ring and the crossbeam are manufactured in one piece.

[0018] The beneficial effect of adopting the above further solution is that the efficiency of integrated manufacturing is higher.

[0019] Furthermore, the integrated manufacturing method is 3D scanning and printing.

[0020] The beneficial effect of adopting the above further scheme is that 3D scanning and printing ensure that the device can be highly consistent with the edge of each expanded skin flap, effectively block the blood supply to the edge of the expanded skin flap, and improve the efficiency of training skin flap blood supply.

[0021] Furthermore, the C-shaped base, the fixing ring and the crossbeam are made of photosensitive resin.

[0022] The beneficial effects of adopting the above further scheme are as follows: The photosensitive resin has the advantages of low cost and convenient 3D printing processing, and has a high surface finish, so the comfort of the patient when wearing is high.

[0023] Further, the number of the fixing belts is two, and both ends of the fixing belts are respectively inserted into two symmetric fixing rings.

[0024] The beneficial effects of adopting the above further scheme are as follows: The two fixing belts fix the C-shaped base more firmly and are not easy to move.

[0025] Further, the fixing belt is a rubber belt.

[0026] The beneficial effects of adopting the above further scheme are as follows: The rubber belt has elasticity, so the patient feels more comfortable when using it and is not easy to be strangled. Brief Description of the Drawings

[0027] Figure 1 It is a structural schematic diagram of the present utility model.

[0028] In the drawings, the list of components represented by each reference numeral is as follows:

[0029] 1. C-shaped base; 2. Fixing ring; 3. Cross beam. Detailed Embodiment

[0030] The principles and features of the present utility model are described below in conjunction with the drawings. The examples given are only used to explain the present utility model and are not intended to limit the scope of the present utility model.

[0031] Embodiment 1

[0032] As Figure 1 shown, a flap blood circulation training device includes a C-shaped base 1 that fits the edge contour of the expanded flap. On the outer walls of the two opposite sides of the C-shaped base 1, fixing rings 2 are symmetrically and fixedly connected, and fixing belts are inserted into the fixing rings 2.

[0033] The beneficial effects of this embodiment are as follows: When the patient wears this device, the contour of the C-shaped base 1 is closely attached to the edge of the expanded flap. Then, the fixing belts are inserted into the fixing rings 2, and the C-shaped base 1 is fixed on the patient's body by tying the fixing belts, so that the C-shaped base 1 deeply presses the skin at the edge of the expanded flap to block blood supply, causing the flap to fall into an ischemic state, promoting the establishment of new blood circulation at the pedicle of the expanded flap. By wearing this device repeatedly many times a day for a period of time, it can play a role in improving the blood circulation of the expanded flap, reducing the incidence of blood circulation disorders and the flap necrosis rate during flap transfer.

[0034] Specifically, a skin flap refers to the skin with blood supply and its attached subcutaneous adipose tissue. Its blood supply is called blood circulation. When the skin flap is cut and transferred, blood circulation disorders may occur due to insufficient blood supply at the pedicle. Once blood circulation disorders occur in the skin flap, it may lead to pigmentation at least, affecting the appearance, or necrosis of the skin flap at worst, resulting in the failure of the operation.

[0035] When the skin defect area of the patient is large, using an expanded skin flap for repair is a very good choice. When performing an expanded skin flap operation, first, an expander needs to be implanted deep in the healthy skin around the defect, and then normal saline is regularly injected into the expander to expand the healthy skin tissue, so as to provide a larger area of expanded skin flap for defect repair.

[0036] After the expander is filled and expanded and before the expanded skin flap transfer operation, a 3D scan is performed on the entire expanded skin flap to obtain 3D data of the expanded skin flap. According to the 3D data, a C-shaped base 1 is designed and manufactured to ensure that the edge of the C-shaped base 1 corresponds to and fits the edge contour of the expanded skin flap, and the device is completed by 3D printing.

[0037] Then, the C-shaped base 1 is fixed on the patient. The C-shaped base 1 firmly presses on the skin at the edge of the expanded skin flap to block the blood supply at the edge of the skin flap, promote the re-establishment of blood supply at the pedicle of the expanded skin flap, and reduce the incidence of blood circulation disorders and the necrosis rate of the skin flap after skin flap transfer.

[0038] As an alternative technical solution of this embodiment, the C-shaped base 1 can also be in other shapes such as O-shaped or U-shaped.

[0039] Embodiment 2

[0040] As Figure 1 shown, preferably, on the basis of Embodiment 1, a cross beam 3 for strengthening the C-shaped base 1 is arranged above the C-shaped base 1.

[0041] The beneficial effect of adopting the preferred solution in the above embodiment is that the cross beam 3 can strengthen the C-shaped base 1 and prevent the C-shaped base 1 from being squeezed and deformed when tied with a fixing band.

[0042] Specifically, when the C-shaped base 1 is pressed on the edge of the expanded skin flap of the patient, when pressed on the back or on the arm and then tied with a fixing band, the force-bearing area and flatness are different, which will inevitably lead to different degrees of fitting of the C-shaped base 1. By strengthening with the cross beam 3, it is avoided that the C-shaped base 1 is greatly deformed and cannot fit.

[0043] Preferably, both ends of the cross beam 3 are fixedly connected to both ends of the C-shaped base 1 respectively.

[0044] The beneficial effect of adopting the preferred solution in the above embodiment is that the cross beam 3 is perpendicular to both ends of the C-shaped base 1, and the force-bearing form is better.

[0045] Preferably, the number of the cross beams 3 is two.

[0046] The beneficial effect of adopting the preferred solution in the above embodiment is that the two cross beams 3 are better stressed and less likely to deform.

[0047] Specifically, the number of the cross beams 3 is two and they are arranged in parallel, and are fixedly connected to both ends of the C-shaped base 1, forming a frame structure in space, and the stress effect is better.

[0048] Embodiment 3

[0049] As Figure 1 shown, preferably, on the basis of Embodiments 1-2, the C-shaped base 1, the fixing ring 2 and the cross beam 3 are integrally manufactured.

[0050] The beneficial effect of adopting the preferred solution in the above embodiment is that the efficiency of integral manufacturing is higher.

[0051] Preferably, the integral manufacturing method is 3D scanning and printing.

[0052] The beneficial effect of adopting the preferred solution in the above embodiment is that 3D printing ensures that the C-shaped base can completely fit the edge of the expanded skin flap, and efficiently blocks the blood supply at the edge of the expanded skin flap.

[0053] Preferably, the materials of the C-shaped base 1, the fixing ring 2 and the cross beam 3 are photosensitive resin.

[0054] The beneficial effect of adopting the preferred solution in the above embodiment is that the photosensitive resin has the advantages of low cost, convenient 3D printing processing, and high surface finish, and the comfort of the patient when wearing is high.

[0055] Specifically, by 3D printing to manufacture the C-shaped base 1, the fixing ring 2 and the cross beam 3, the processing cost is lower, any shape can be customized, and it can fit the expanded skin flap at any position of the patient's body.

[0056] Embodiment 4

[0057] As Figure 1 shown, preferably, on the basis of Embodiments 1-3, preferably, the number of the fixing rings 2 on one side of the C-shaped base 1 is two.

[0058] The beneficial effect of adopting the preferred solution in the above embodiment is that there are a total of four fixing rings 2 on both sides, and the C-shaped base 1 is fixed more firmly.

[0059] Preferably, the number of the fixing belts is two, and both ends of the fixing belts are respectively inserted into two symmetric fixing rings 2.

[0060] The beneficial effects of adopting the preferred solution in the above embodiment are that the C-shaped base 1 is more firmly fixed by the two fixing straps and is not prone to displacement.

[0061] Preferably, the fixing strap is a rubber strap.

[0062] The beneficial effects of adopting the preferred solution in the above embodiment are that the rubber strap has elasticity, is more comfortable for patients to use, and is not prone to strangulation.

[0063] Specifically, there are a total of four fixing rings 2 on both sides, symmetrically paired in two groups. The same fixing strap can be inserted in sequence for fixation, or multiple fixing straps can be inserted, and the fixing methods are more diverse;

[0064] The positions of the two groups of fixing rings 2 correspond to the positions of the two ends of the two cross beams 3. The two ends of the fixing strap are respectively inserted into two symmetric fixing rings 2, and the two ends of the fixing strap are tied. The middle part of the fixing strap is pressed above the cross beam 3, and the C-shaped base 1 is squeezed towards the patient's body, and the compression effect is better.

[0065] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present invention.

[0066] In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include at least one of such features. In the description of the present invention, "a plurality of" means at least two, such as two, three, etc., unless otherwise specifically defined.

[0067] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed", etc. should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or integrated; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the internal communication of two elements or the interaction relationship between two elements, unless otherwise clearly limited. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0068] In the present utility model, unless otherwise clearly specified or defined, the first feature being "on" or "under" the second feature may be that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, the first feature being "above", "over" and "on top of" the second feature may be that the first feature is directly above or obliquely above the second feature, or merely indicates that the horizontal height of the first feature is higher than that of the second feature. The first feature being "under", "beneath" and "underneath" the second feature may be that the first feature is directly below or obliquely below the second feature, or merely indicates that the horizontal height of the first feature is less than that of the second feature.

[0069] In the description of this specification, the description with reference to terms such as "an embodiment", "some embodiments", "examples", "specific examples", or "some examples", etc. means that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present utility model. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, without contradiction, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of different embodiments or examples.

[0070] Although the embodiments of the present utility model have been shown and described above, it can be understood that the above embodiments are exemplary and should not be construed as limiting the present utility model. Those of ordinary skill in the art can make changes, modifications, substitutions, and variations to the above embodiments within the scope of the present utility model.

Claims

1. A device for training blood supply of expanded skin flap, characterized in that: It comprises a C-shaped base (1) which matches the edge contour of the expanded skin flap, and fixing rings (2) are symmetrically fixed to the opposite outer walls of the C-shaped base (1), and fixing belts are inserted into the fixing rings (2).

2. The expanded skin flap blood supply training device according to claim 1, characterized in that: A crossbeam (3) for reinforcing the C-shaped base (1) is arranged above the C-shaped base (1).

3. The expanded flap blood supply training device according to claim 2, characterized in that: The two ends of the cross beam (3) are respectively fixedly connected to the two end portions of the C-shaped base (1).

4. The expanded skin flap blood supply training device according to claim 3, characterized in that: The number of the cross beams (3) is two.

5. The expanded skin flap blood supply training device according to claim 1, characterized in that: The number of the fixing rings (2) on one side of the C-shaped base (1) is two.

6. The expanded skin flap blood supply training device according to any one of claims 1 to 5, characterized in that: The C-shaped base (1), the fixing ring (2) and the crossbeam (3) are manufactured in an integrated manner.

7. The expanded skin flap blood supply training device according to claim 6, characterized in that: The integrated manufacturing method is 3D scanning and printing.

8. The expanded skin flap blood supply training device according to claim 7, characterized in that: The C-shaped base (1), the fixing ring (2) and the crossbeam (3) are made of photosensitive resin.

9. The expanded skin flap blood supply training device according to any one of claims 1 to 5, characterized in that: There are two fixing belts, and two ends of the fixing belts are respectively inserted into two symmetrical fixing rings (2).

10. The expanded skin flap blood supply training device according to claim 9, characterized in that: The fixing belt is a rubber belt.

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