Injection device for treating chronic ulcer wounds and application thereof

Abstract

The invention provides an injection device for treating chronic ulcer wounds and application of the injection device. The injection device comprises an injector and an injection guider. A dual-scale positioning system is formed by a first scale which is arranged on a first positioning plate of the injection guider and is used for marking the distance between injection points and a second scale which is arranged on a second positioning plate and is used for marking the distance from the edge of a wound surface, so that the error of the injection points is controlled within + / -0.1 mm, and the injected concentrated growth factors are uniformly distributed; the technical problems that an existing injection device is low in positioning precision, growth factors are distributed unevenly, and the ulcer wound repairing effect is affected are solved.

Description

Technical Field

[0001] This application relates to the technical field of ulcer wound treatment, and particularly relates to an injection device for treating chronic ulcer wounds and its application. Background Art

[0002] Chronic ulcer wounds (such as lower extremity venous ulcers, diabetic feet) are a common type of skin injury. The healing of such wounds can be improved through various conventional treatment methods, such as debridement, antibiotic treatment, and dressing coverage. Combining with Figure 4 the effect diagram of ulcer wound treatment using conventional treatment methods as shown, this conventional treatment method is prone to problems such as poor blood supply to chronic ulcer wounds, infection at the bottom, atrophy and sclerosis of the marginal skin, and hard texture.

[0003] Furthermore, most existing injection devices use general syringes and lack a dedicated guiding structure for ulcer wounds. Or the existing medical guiding structures are complex in structure and not suitable for injection use in lower extremity chronic ulcer wounds, and it is difficult to accurately control the medical injection points and the spacing between injection points for chronic ulcer wounds, that is, the positioning accuracy of existing injection devices is low, resulting in uneven distribution of growth factors and affecting the wound repair effect.

[0004] Therefore, for those skilled in the art, it is urgent to develop an injection device with a simple structure and capable of accurately controlling the medical injection points and the spacing between injection points for chronic ulcer wounds to improve the wound repair effect. Summary of the Invention

[0005] In view of this, to solve or partially solve the above problems, the embodiment of this application provides an injection device for treating chronic ulcer wounds. The injection device includes a syringe and an injection guide. Through the dual-scale positioning system formed by the first scale on the first positioning plate of the injection guide for marking the spacing between injection points and the second scale on the second positioning plate for marking the distance from the wound edge, the injection point error is controlled within ±0.1 mm, ensuring uniform distribution of growth factors and solving the technical problem that the low positioning accuracy of existing injection devices leads to uneven distribution of growth factors and affects the ulcer wound repair effect.

[0006] To achieve the above object, on the one hand, an embodiment of the present application provides an injection device for treating chronic ulcer wounds, including a syringe and an injection guide; the syringe includes an injection main body and a needle tube, the injection main body is provided with a cylinder for carrying an injection solution, the outside of the cylinder is provided with a fixing structure for stabilizing the syringe, one end of the cylinder is connected to the needle tube, and a pushing piston is connected to the cylinder; the injection guide is connected to the needle tube; the injection guide includes a first positioning plate and a second positioning plate, the first positioning plate is provided with a first scale for marking the distance between injection points, and the second positioning plate is provided with a second scale for marking the distance from the wound edge.

[0007] Further, the fixing structure is configured as a hollow cavity adapted to the cylinder, the hollow cavity is a cylindrical structure with an opening at one end, and a through hole adapted to the needle tube is opened at its bottom.

[0008] Further, an outer sleeve flange extending outward is circumferentially provided at one end of the hollow cavity close to the opening.

[0009] Further, a plurality of adjusting buckles for easily adapting to and fixing the cylinder are symmetrically provided on the hollow cavity.

[0010] Further, the second positioning plate and the first positioning plate form two right-angled sides of a right-angled main body, and the outer edge of the vertex angle of the right-angled main body is round and blunt.

[0011] Further, a needle insertion injection hole adapted to the needle tip of the needle tube is opened at the vertex angle of the right-angled main body.

[0012] Further, a handle is provided at one end of the first positioning plate away from the needle insertion injection hole.

[0013] Further, the distance between injection points of the first scale is 0.3 cm to 0.7 cm.

[0014] Further, the distance from the wound edge of the second scale is 0.8 cm to 1.2 cm.

[0015] Further, the injection solution includes concentrated growth factors, and the concentrated growth factors are derived from autologous venous blood or allogeneic umbilical cord blood.

[0016] On the other hand, an embodiment of the present application provides the application of the injection device for treating chronic ulcer wounds described in any of the above embodiments in the treatment of chronic ulcer wounds.

[0017] Further, in specific applications, including during injection, the second scale of the second positioning plate of the injection guide is longitudinally aligned with the wound edge, and injection is performed by moving according to the scale of the first scale of the first positioning plate;

[0018] Preferably, before injection, debride the chronic ulcer wound surface. First, use the blunt scraping method to remove necrotic tissue. When the area is < 1 cm 2 , switch to sharp excision;

[0019] Preferably, after injection, disinfect the injection guide to avoid cross-infection.

[0020] Compared with the prior art, the advantages of the present application are as follows:

[0021] The present application provides an injection device for treating chronic ulcer wound surfaces. The injection device includes a syringe and an injection guide. Through the first scale on the first positioning plate of the injection guide for marking the injection point spacing and the second scale on the second positioning plate for marking the distance from the wound edge, a dual-scale positioning system is formed to control the injection point error within ±0.1 mm for high-precision positioning, ensuring uniform distribution of growth factors to improve the repair effect of the ulcer wound surface.

[0022] At the same time, by injecting the injection point at a certain distance from the wound edge, the needle is prevented from contacting the infected area of the wound, reducing the risk of infection.

[0023] In addition, the injection guide with transverse and longitudinal dual scales of the present application can provide visual scales, reduce the dependence on the experience of physicians, improve the control accuracy of injection, shorten the ulcer healing cycle, and greatly reduce the recurrence rate, with significant clinical benefits. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] The following drawings are used to provide a further understanding of the present application, form a part of the present application, and are only intended to schematically explain and illustrate the present invention, not to limit the scope of the present invention. In the drawings:

[0025] Figure 1 is a schematic structural diagram of an injection device for treating chronic ulcer wound surfaces in an embodiment of the present application;

[0026] Figure 2 is a schematic structural diagram of an injection device for treating chronic ulcer wound surfaces in another embodiment of the present application;

[0027] Figure 3 is a schematic structural diagram of an injection device for treating chronic ulcer wound surfaces in another embodiment of the present application;

[0028] Figure 4 is a treatment effect diagram of an ulcer wound surface using the existing conventional treatment method;

[0029] Figure 5The figure shows the treatment effect of the ulcer wound after using the injection device for treating chronic ulcer wounds of the present application.

[0030] Reference numerals:

[0031] 1. Syringe; 10. Fixing structure; 101. Outer sleeve crimp; 11. Injection main body; 110. Cylinder body; 111. Pushing piston; 1101. Injection liquid interface; 12. Needle tube; 13. Adjusting buckle; 14. Auxiliary syringe

[0032] 2. Injection guide; 20. Needle insertion and injection hole; 21. First positioning plate; 22. Second positioning plate; 211. First scale; 221. Second scale; 23. Holding handle. Detailed implementation manners

[0033] The following will disclose several embodiments of the present application with reference to the drawings, and clearly and completely describe the technical solutions of the present application. The attached drawings of the specification form a part of the present application and are used to provide a further understanding of the present application. The illustrative embodiments and descriptions of the present application are used to explain the present invention and do not constitute an improper limitation to the application. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the scope of protection of the present application.

[0034] In the present application, unless otherwise clearly defined and limited, terms such as "connection" and "fixation" shall be understood in a broad sense. For example, "connection" can be a fixed connection, a detachable connection, or an integral one, unless otherwise clearly limited. For those of ordinary skill in the art, the specific meanings of the above terms in the present application can be understood according to specific circumstances.

[0035] In addition, the technical solutions between various embodiments of the present application can be combined with each other, but it must be based on the fact that those of ordinary skill in the art can implement it. When the combination of technical solutions conflicts with each other or cannot be implemented, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0036] Refer to Figure 1As shown in the figure, this embodiment provides an injection device for treating chronic ulcer wounds. The injection device includes a syringe 1 and an injection guide 2. The syringe 1 includes an injection body 11 and a needle tube 12. The injection body 11 is provided with a cylinder 110 for carrying the injection solution. An outer side of the cylinder 110 is provided with a fixing structure 10 for stabilizing the syringe. One end of the cylinder 110 is connected to the needle tube 12, and a push piston 111 is connected to the cylinder 110. The injection guide 2 is connected to the needle tube 12. The injection guide 2 includes a second positioning plate 22 and a first positioning plate 21 that is perpendicularly connected to the second positioning plate. The first positioning plate 21 is provided with a first scale 211 for marking the distance between injection points, and the second positioning plate 22 is provided with a second scale 221 for marking the distance from the wound edge. A dual-scale positioning system formed by the first scale for marking the distance between injection points on the first positioning plate 21 of the injection guide and the second scale for marking the distance from the wound edge on the second positioning plate 22 controls the injection point error within ±0.1 mm for high-precision positioning, ensuring uniform distribution of the condensation growth factor to achieve an improved repair effect of the ulcer wound.

[0037] It should be noted that the injection solution in this embodiment includes concentrated growth factor (CGF). The concentrated growth factor is derived from autologous venous blood or allogeneic umbilical cord blood. As a third-generation platelet concentrate, it is rich in growth factors such as platelet-derived growth factor (PDGF), vascular endothelial growth factor (VEGF), and epidermal growth factor (EGF). Through the novel injection device of this application embodiment, precise punctual injection of the normal skin at the wound edge is achieved, promoting the migration, proliferation, vascularization, and collagen deposition of normal skin cells at the wound edge, which can not only effectively improve the wound healing speed but also avoid the adverse effects brought by directly contacting the bacteria-infected wound.

[0038] Furthermore, in this application embodiment, by additionally and cooperatively combining to provide the fixing structure 10 on the outer side of the cylinder 110, the syringe is stabilized, which is conducive to precisely controlling the injection target. The fixing structure 10 is configured as a hollow cavity adapted to the cylinder 110. The hollow cavity is a cylindrical structure with an opening at one end, and a through hole adapted to the needle tube 12 is provided at its bottom.

[0039] Furthermore, to facilitate the injection propulsion of the push piston 111, an outer sleeve curl 101 extending outward is circumferentially provided at one end of the fixing structure 10 near the upper opening.

[0040] As a preferred implementation manner, as Figure 2As shown, a plurality of adjusting buckles 13 for facilitating the fitting and fixing of the cylinder 110 are symmetrically arranged on the cavity wall of the hollow cavity of the fixed structure 10. According to different specifications of the syringe cylinder, the adaptability and compatibility of the syringe body can be improved by adjusting the adjusting buckles. Further, the adjusting buckles are preferably not limited to being arranged in two layers up and down, as long as the injection angle can be ensured to be perpendicular.

[0041] As Figures 1-3 shown, the second positioning plate 22 and the first positioning plate 21 form a right-angle main body, and the top angle of the right-angle main body is round and blunt to reduce mechanical damage to the skin during operation. An injection hole 20 adapted to the needle of the syringe needle 12 is provided at the top angle of the right-angle main body. The injection hole 20 is preferably not limited to a diameter of 0.6 mm, and forms a clearance fit with the syringe needle (0.4 mm).

[0042] As a preferred embodiment, as Figure 2 shown, a handle 23 is provided at one end of the first positioning plate 21 away from the injection hole 20. The handle 23 can preferably be set as a cylindrical handle with a height of 5 mm and a diameter of 1 mm, which is convenient for the operation and rapid movement of the injection guide.

[0043] It should be noted that the manufacturing materials of the first positioning plate 21 and the second positioning plate 22 are preferably medical-grade stainless steel or polypropylene, with a thickness of 1 mm, combining light weight and corrosion resistance.

[0044] The injection point spacing of the first scale is 0.3 cm to 0.7 cm, and further preferably 0.5 cm. The distance from the wound edge of the second scale is 0.8 cm to 1.2 cm, and further preferably 1 cm. Laser etching technology can be used to ensure clear scales.

[0045] As a preferred embodiment, as Figure 3 shown, an injection liquid interface 1101 is provided on the cylinder wall of the cylinder 110 of the injection main body. The auxiliary syringe 14 can supplement the injection liquid through the injection liquid interface 1101. Further, a one-way valve is provided in the syringe needle 12, which is opened during injection and closed when not injecting, so as to fully ensure that bacterial contaminants on the skin wound surface do not enter the cylinder body of the injection main body, and ensure the cleanliness and pollution-free of the syringe.

[0046] In summary, the present application provides an injection device for treating chronic ulcer wounds. The injection device includes a syringe and an injection guide. Through the dual-scale positioning system formed by the first scale on the first positioning plate of the injection guide for marking the injection point spacing and the second scale on the second positioning plate for marking the distance from the wound edge, high-precision positioning with the injection point error controlled within ±0.1 mm is achieved, ensuring uniform distribution of growth factors to improve the repair effect of ulcer wounds.

[0047] Meanwhile, by injecting the injection point at a certain distance away from the wound edge, the needle is prevented from contacting the infected area of the wound, reducing the risk of infection.

[0048] As another embodiment, the injection device of the present application can optimize the usage method of injection. The specific usage method includes:

[0049] Debridement stage: Initially, blunt scraping is used to remove necrotic tissue. When the area is <1 cm 2 sharp excision is used instead.

[0050] Injection stage: The second scale of the second positioning plate of the injection guide is longitudinally aligned with the wound boundary, and an injection is made every 0.5 cm according to the scale of the first scale of the second positioning plate. The single-point dose is 0.1 ml CGF. After injection, the injection guide is disinfected to avoid cross-infection.

[0051] In addition, the injection guide with horizontal and vertical dual scales of the present application can provide visual scales, reduce the dependence on the doctor's experience, improve the control accuracy of injection, shorten the ulcer healing cycle, and greatly reduce the recurrence rate, with significant clinical benefits. For details, refer to the comparison of ulcer wounds treated with the existing conventional treatment method Figure 4 and ulcer wounds treated with the injection device for treating chronic ulcer wounds of the present application Figure 5 There are significant differences in the clinical treatment effects between the two.

[0052] The above description shows and describes the preferred embodiments of the present application. However, as mentioned before, it should be understood that the present application is not limited to the form disclosed herein, should not be regarded as excluding other embodiments, but can be used in various other combinations, modifications, and environments, and can be changed within the scope conceived herein through the above teachings or the technology or knowledge in the relevant field. And any changes and modifications made by those skilled in the art without departing from the spirit and scope of the present application shall fall within the protection scope of the appended claims of the present application.

Claims

1. An injection device for treating chronic ulcer wounds, characterized in that: include: A syringe, comprising an injection body and a needle tube, wherein the injection body is provided with a barrel for carrying an injection liquid, a fixing structure for stabilizing the syringe is provided on the outer side of the barrel, one end of the barrel is connected to the needle tube, and a propulsion piston is connected to the barrel; An injection guide is connected to the needle tube; the injection guide includes a first positioning plate and a second positioning plate, the first positioning plate is provided with a first ruler for marking the distance between injection points, and the second positioning plate is provided with a second ruler for marking the distance from the edge of the wound.

2. The injection device for treating chronic ulcer wounds according to claim 1, characterized in that: The fixed structure is configured as a hollow cavity matched with the barrel, and the hollow cavity is a cylindrical structure with an opening at one end, and a through hole matched with the needle tube is opened at the bottom.

3. The injection device for treating chronic ulcer wounds according to claim 2, characterized in that: An outer sheath curling edge extending outward is circumferentially arranged at one end of the hollow cavity close to the opening.

4. The injection device for treating chronic ulcer wounds according to claim 2, characterized in that: The hollow cavity is symmetrically provided with a plurality of adjustment buckles for facilitating adaptation and fixing of the cylinder.

5. The injection device for treating chronic ulcer wounds according to claim 1, characterized in that: The first positioning plate and the second positioning plate form two right-angled sides of a right-angled main body, and the outer edge of the top angle of the right-angled main body is rounded and blunt.

6. The injection device for treating chronic ulcer wounds according to claim 5, characterized in that: A needle insertion hole matched with the needle head of the needle tube is provided at the top corner of the right-angled main body, and a handle is provided on the end of the first positioning plate away from the needle insertion hole.

7. The injection device for treating chronic ulcer wounds according to claim 1, characterized in that: The distance between the injection points of the first scale mark is 0.3 cm to 0.7 cm; the distance between the wound edges of the second scale mark is 0.8 cm to 1.2 cm.

8. The injection device for treating chronic ulcer wounds according to claim 1, characterized in that: The injection solution comprises concentrated growth factors, which are derived from autologous venous blood or allogeneic umbilical cord blood.

9. Use of the injection device for treating chronic ulcer wounds according to any one of claims 1 to 8 in the treatment of chronic ulcer wounds.

10. The use according to claim 9, characterized in that: During the injection, the second scale mark of the second positioning plate of the injection guide is longitudinally aligned with the edge of the wound surface, and the injection is performed according to the scale mark of the first scale mark of the first positioning plate; It also includes debridement of the chronic ulcer wound surface before injection, using blunt scraping to remove necrotic tissue for the first time, and using sharp excision when the area is less than 1 cm2; The method also includes disinfecting the injection guide after the injection to avoid cross infection.

Images