A vascular catheter insertion site protection dressing

Abstract

The utility model provides a kind of vascular catheter puncture point protective pasting film, the utility model relates to medical instrument technical field, including the outer covering film and inner covering film of heat-pressing packaging forming, outer covering film and inner covering film are the non-woven fabric structure of PU film outer packaging;Circular vacant slot is formed between outer covering film and inner covering film and penetrates;The beneficial effects of the utility model are that: while being protected by pasting film adhering in the skin of puncture point periphery, its structure can be used as the sensing structure of puncture point state by color change test paper, so that catheterization patient can confirm the specific blood leakage and infection of internal puncture point by color change state of color change test paper, so as to be treated in time and change medicine, waterproof, hydrophobic structure is also provided to avoid interference of sweat and liquid to test paper monitoring, improve the practicality and applicability of the pasting film, and the structure is simple production and low in use cost, convenient as consumable to be put into use.

Description

Technical Field

[0001] This utility model relates to the field of medical device technology, and more specifically, to a protective dressing for vascular catheter puncture sites. Background Technology

[0002] Vascular catheterization is a common clinical procedure. Its core purpose is to insert a needle into a target blood vessel (such as a peripheral vein, central vein, or artery) under strict aseptic conditions and with the assistance of imaging technology. Then, a thin guide wire is inserted into the blood vessel lumen through the needle as a guide. A soft hollow catheter is then pushed along the guide wire and placed in the predetermined position in the blood vessel. Finally, it is properly fixed to establish a reliable vascular access for medical purposes such as rapid infusion, blood transfusion, drug administration, blood purification, hemodynamic monitoring, or special treatment. In scenarios requiring indwelling catheter placement, such as PICC or CVC placement, patients with catheters often experience infection of the vascular catheter due to daily activities outside the hospital, such as bathing, sweating, and inadequate observation. Current catheter protection methods are usually simple protective films with limited waterproofness and durability. Relying solely on the patient's own protection and management of the puncture catheter is difficult, and there is a lack of a targeted protective structure to address this scenario. Utility Model Content

[0003] The technical problem to be solved by this utility model is that the existing external protective structure for puncture and catheter placement has poor functionality and still needs to be combined with the patient's own awareness of protection to ensure the safety of the catheter placement, which poses a risk of vascular catheter infection. In order to address the above problems, a protective dressing film for vascular catheter puncture site is provided.

[0004] The purpose and effect of this utility model are achieved by the following specific technical means: including an outer film and an inner film formed by heat pressing and sealing, wherein the outer film and the inner film are non-woven fabric structures with PU film encapsulation. A circular empty groove is formed between the outer and inner films. An arched platform is formed on the outer film in the empty groove. A concave annular flow-blocking groove is formed between the edge of the arched platform and the surface of the outer film. An inner arched color-changing test paper is attached and sealed on the arched platform. The inner membrane has an integrally formed hydrophobic part on the hot-pressed surface of the outer membrane. The hydrophobic part has a mesh structure. The bottom surface of the inner membrane has an adhesive surface, and an inner liner strip is embedded between the outer edge of the empty groove and the adhesive surface on the bottom surface of the inner membrane.

[0005] Furthermore, the outer film has a sealing ring at the outer end of the color-changing test paper, and the sealing ring forms a transparent waterproof film on the upper surface of the color-changing test paper.

[0006] A further preferred embodiment: a filling membrane is attached and fixed above the flow-blocking groove on the arched platform, and the filling membrane is a PE film surface structure that fits the groove shape of the flow-blocking groove.

[0007] A further preferred embodiment: the outer edge of the color-changing test paper is provided with an adhesive ring that fits and matches the filling film, and the adhesive ring is an elastic ring with a convex bottom.

[0008] A further preferred embodiment: the color-changing test paper is composed of multiple layers of paper, and the color-changing test paper is fixed by heat pressing with the intersecting surfaces of the arched platform.

[0009] A further preferred embodiment: the inner lining strip has a waterproof strip formed around its edge, the waterproof strip is a medical silicone strip that can be molded under pressure, and the bottom surface of the waterproof strip has a convex stepped structure.

[0010] The beneficial effects of this utility model are: This type of vascular catheter puncture site protective dressing not only provides targeted protection by adhering to the skin around the puncture site, but its structure also uses color-changing test strips as a sensing structure for the puncture site status. This allows patients to confirm the specific blood leakage and infection status of the puncture site by observing the color change of the test strips, enabling timely medical attention and dressing changes. Furthermore, it incorporates waterproof and hydrophobic structures to prevent interference from sweat and other liquids on the test strip monitoring, improving the practicality and applicability of the dressing. Moreover, its simple structure and low production and usage costs make it easy to use as a consumable. Attached Figure Description

[0011] The present invention will be further described below with reference to the accompanying drawings.

[0012] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is an exploded structural diagram of the present invention; Figure 3 This is a schematic diagram of the exploded structure of the outer coating of this utility model; Figure 4 This is a schematic diagram of the inner lining strip structure of this utility model.

[0013] Figures 1-4 In the middle: 1. Outer membrane, 2. Color-changing test paper, 3. Sealing ring, 4. Inner membrane, 5. Hydrophobic part, 6. Inner liner strip, 7. Filler membrane, 8. Arched platform, 9. Adhesive ring, 10. Waterproof strip. Detailed Implementation

[0014] To better understand the above-mentioned objectives, features, and advantages of this utility model, the following description is provided in conjunction with the accompanying drawings. Figures 1-4The present invention will be further described in detail below with specific embodiments. The following embodiments are merely examples for implementing the present invention. It must be noted that the disclosed embodiments do not limit the scope of the present invention. On the contrary, any modifications and refinements made without departing from the scope of the present invention are within the patent protection scope of the present invention.

[0015] A protective dressing for vascular catheter puncture sites includes an outer cover 1 and an inner cover 4, which are heat-pressed and encapsulated. The outer cover 1 and the inner cover 4 are non-woven fabric structures encapsulated with PU film. A circular empty groove is formed between the outer film 1 and the inner film 4. An arched platform 8 is formed on the outer film 1 in the empty groove. A concave annular flow-blocking groove is formed between the edge of the arched platform 8 and the film surface of the outer film 1. An inner arched color-changing test paper 2 is attached and sealed on the arched platform 8. The inner membrane 4 has an integrally formed hydrophobic part 5 on the hot-pressed surface with the outer membrane 1. The hydrophobic part 5 has a mesh structure. The bottom surface of the inner membrane 4 has an adhesive surface, and an inner liner strip 6 is embedded between the outer edge of the empty groove and the adhesive surface on the bottom surface of the inner membrane 4. The adhesive film is integrally packaged using a hot-pressing process, facilitating packaging and subsequent direct application. Its structure includes a pre-reserved circular slot to provide space for the puncture point. The arched platform 8 serves as the fixing end of the color-changing test strip 2. After the entire adhesive film is applied, the concave surface of the color-changing test strip 2 will fully contact the puncture point. This allows for the detection of blood oozing, exudate, or infection by common bacteria such as Staphylococcus aureus at the puncture point, by observing the color change and size of the test strip 2. This provides a basis for confirmation so that patients can seek medical attention and change dressings in a timely manner. The principle of its color-changing test strip 2 is based on the color-changing test strip principle of colloidal gold immunochromatographic test strip. Its core lies in immunochromatographic technology and the color reaction of the marker. Its color-changing reagent can be prepared using medical-grade non-toxic dyes. The color-changing test strip 2 replaces the method of opening the window for observation. Its color-changing test strip 2 is highly sensitive to exudate, blood and bacterial infection, and the display effect is intuitive. No relevant medical knowledge is required to obtain the status of the puncture point, which makes it convenient for patients to seek medical attention and change dressings in a timely manner according to the status of the test strip. Based on the above, the adhesive surface of the inner liner 4 is mainly used as the bonding surface. The embedded inner strip 6 is used to shape the edge of the inner liner 4, prevent the adhesive surface of the inner liner 4 from lifting during daily application, and play a waterproof role. At the same time, the outer periphery of the color-changing test paper 2 and the arched platform 8 form a certain step height, which can effectively prevent the liquid from the outer periphery from contaminating the color-changing test paper 2 and causing misjudgment of the color-changing test paper 2. Furthermore, the stepped space and flow-blocking groove of the arched platform 8 further prevent liquid from the outside of the self-adhesive film bonding surface from being contaminated. Through layers of waterproof isolation, the color-changing test paper 2 and the puncture point are protected, which improves the protective effect and practicality of the adhesive film. Specifically, the outer film 1 has a sealing ring 3 sealed at the outer end of the color-changing test paper 2, and the sealing ring 3 forms a transparent waterproof film on the upper surface of the color-changing test paper 2. The outer side of the color-changing test paper 2 is mainly isolated and sealed by the sealing ring 3 integrally encapsulated. Specifically, a filling membrane 7 is attached and fixed above the flow-blocking groove on the arched platform 8. The filling membrane 7 is a PE film structure that fits the groove shape of the flow-blocking groove. The filling membrane 7 isolates and seals the bonding surfaces above and below the arched platform 8. The filling membrane 7 ensures the waterproof effect of the stepped space of the arched platform 8 through its PE film properties, preventing internal sweat from contaminating the test paper area. Furthermore, the outer edge of the color-changing test paper 2 is provided with an adhesive ring 9 that fits and matches the filling film 7. The adhesive ring 9 is an elastic ring with a convex bottom. The structure of the elastic adhesive ring 9 is used to fix the outer edge structure of the color-changing test paper 2. At the same time, the elastic ring has a certain elastic buffering characteristic, which can buffer the displacement of the conduit on the bonding surface during the attachment and fixation, and ensure the fixation and protection effect of the conduit.

[0016] Furthermore, the color-changing test strip 2 is composed of multiple layers of paper. The color-changing test strip 2 and the arched platform 8 are fixed by heat pressing. The multi-layered color-changing test strip can cover a large area of ​​puncture point. The arched platform 8 and the color-changing test strip 2 have an interlocking concave-convex fixing structure. When the patch is attached to the puncture point, the contact area between the color-changing test strip 2 and the puncture point skin is expanded by pressing the concave surface of the color-changing test strip 2 against the puncture point skin. At the same time, the tightness of the contact between the color-changing test strip 2 and the puncture point skin is ensured, thus ensuring the monitoring effect of the color-changing test strip 2.

[0017] Furthermore, a waterproof strip 10 is formed around the edge of the inner lining strip 6. The waterproof strip 10 is a medical silicone strip that can be molded under pressure. The bottom surface of the waterproof strip 10 has a convex stepped structure. The adhesive film further improves the tightness of the adhesive surface by using the waterproof strip 10 on the edge of the inner lining strip 6 to deform under pressure during the application. At the same time, the inner lining strip 6 helps to fix the adhesive film and prevent the edges from lifting during daily application, thus achieving a waterproof effect.

[0018] During application, the patch is aligned with the position of the color-changing test strip 2 on the outer film 1 above the puncture point. The inner film 4 is then adhered and fixed by pressing. After the entire patch is applied, the concave surface of the color-changing test strip 2 will fully contact the puncture point. In the event of blood oozing, exudate oozing, or infection by common bacteria such as Staphylococcus aureus at the puncture point, the color change and size of the color-changing test strip 2 provide a confirmation for the patient, allowing the patient to seek medical attention and change the dressing in a timely manner.

[0019] Finally, it should be noted that 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 preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of this utility model without departing from the spirit and scope of the technical solutions of this utility model, and all such modifications or substitutions should be covered within the scope of the claims of this utility model.

Claims

1. A protective dressing for vascular catheter puncture sites, characterized in that: It includes an outer film (1) and an inner film (4) formed by heat pressing and sealing, wherein the outer film (1) and the inner film (4) are non-woven fabric structures with PU film encapsulation. A circular empty groove is formed between the outer film (1) and the inner film (4). An arched platform (8) is formed on the outer film (1) in the empty groove. A concave annular flow-blocking groove is formed between the edge of the arched platform (8) and the film surface of the outer film (1). An inner arched color-changing test paper (2) is attached and sealed on the arched platform (8). The inner membrane (4) has an integrally formed hydrophobic part (5) on the hot-pressed surface with the outer membrane (1). The hydrophobic part (5) has a mesh structure. The bottom surface of the inner membrane (4) has an adhesive surface, and an inner liner strip (6) is embedded between the outer edge of the empty groove and the adhesive surface on the bottom surface of the inner membrane (4).

2. The protective dressing for vascular catheter puncture sites according to claim 1, characterized in that: The outer film (1) has a sealing ring (3) sealed at the outer end of the color-changing test paper (2), and the sealing ring (3) forms a transparent waterproof film on the upper surface of the color-changing test paper (2).

3. The protective dressing for vascular catheter puncture sites according to claim 1, characterized in that: The arched platform (8) has a filling film (7) attached and fixed above the flow-blocking groove. The filling film (7) is a PE film surface structure that fits the groove shape of the flow-blocking groove.

4. The protective dressing for vascular catheter puncture sites according to claim 3, characterized in that: The outer edge of the color-changing test paper (2) is provided with an adhesive ring (9) that fits and matches the filling film (7). The adhesive ring (9) is an elastic ring with a convex bottom.

5. The protective dressing for vascular catheter puncture sites according to claim 1, characterized in that: The color-changing test paper (2) is composed of multiple layers of paper, and the color-changing test paper (2) and the arched platform (8) are fixed by hot pressing.

6. The protective dressing for vascular catheter puncture sites according to claim 1, characterized in that: The inner lining strip (6) has a waterproof strip (10) formed around its edge. The waterproof strip (10) is a medical silicone strip that can be molded under pressure. The bottom surface of the waterproof strip (10) has a convex stepped structure.

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