A central venous catheter visualization and securement dressing

Abstract

The utility model relates to the field of fixed application, concretely is a kind of center vein catheter visual fixed application;Including inner application, inner application inside is provided with adhesive layer, the inner application inside central region is provided with absorbent cotton, several observation holes are set up in the direction from center to edge on the inner application, and the observation area formed by the arrangement of several observation holes in turn is coincident with the reference area on center vein catheter, and the side of several observation areas is provided with scale line, still including outer application, the outer application is attached on observation area, the outer application is transparent material, the outer application is attached on the outer side of inner application and extends the edge of inner application in observation area side, the observation area is arched from below to above and forms fixed groove in the inner side of inner application, and the center vein catheter is arranged in the fixed groove, by setting observation hole on inner application, both the air permeability of puncture point can be guaranteed, and the position of center vein catheter or operation area drainage tube can be observed easily.

Description

Technical Field

[0001] This utility model relates to the field of fixation dressings, specifically a visual fixation dressing for central venous catheterization. Background Technology

[0002] Central venous catheterization (CVC) is a medical technique that involves inserting a catheter through the skin into a central vein (such as the superior vena cava, inferior vena cava, or right atrium). It is primarily used for hemodynamic monitoring, long-term intravenous infusion, intravenous nutrition, chemotherapy, or hemodialysis in critically ill patients. CVC is a core technology for critical care and long-term treatment, but the procedure carries both risks and benefits. Strict aseptic technique, precise anatomical localization (relying on ultrasound or X-ray), and standardized postoperative care are essential. After puncture, as the catheter is advanced into the blood vessel, the scale changes reflect the insertion depth in real time. Changes in the scale on the exposed portion of the catheter can indicate catheter dislodgement or inward displacement; therefore, the scale needs to be recorded so that healthcare personnel can adjust it promptly. However, frequent checks of the catheter scale during shift changes require opening the dressing for confirmation, increasing the risk of infection at the puncture site.

[0003] Chinese patent CN204890906U describes a central venous catheter fixation dressing, comprising a rectangular transparent dressing with a release liner covering the adhesive layer. Self-adhesive dressings are attached to the perimeter of the transparent dressing. A protrusion extends from one side of the self-adhesive dressing, and two parallel adhesive strips are attached to the protrusion. A graduation line is provided between the center point of the transparent dressing and the outer edge of the protrusion, perpendicular to the corresponding side. Both the self-adhesive dressing and the adhesive strips are covered with a release liner. While this prior art allows observation of the catheterization graduations without removing the dressing, the graduations are primarily located on the transparent dressing, resulting in insufficient air permeability at the puncture site. Furthermore, the dressing area corresponding to the puncture point lacks cotton for disinfection and hemostasis. The breathable materials are mainly non-woven fabric or gauze, both opaque, which cannot effectively display the graduations. Therefore, a visual fixation dressing that ensures both air permeability at the puncture site and easy observation is proposed. Utility Model Content

[0004] To address the aforementioned problems in the existing technology, this utility model provides a central venous catheterization visualization fixation dressing.

[0005] The objective of this utility model can be achieved through the following technical solutions:

[0006] A central venous catheterization visualization fixation dressing includes an inner dressing with an adhesive layer on its inner side and a cotton swab in the central area of ​​the inner side of the inner dressing. The inner dressing has a plurality of observation holes arranged from the center to the edge. The observation area formed by the plurality of observation holes is superimposed on the reference area of ​​the central venous catheter. The observation area has scale lines on its sides.

[0007] Furthermore, it also includes an external dressing, which is applied to the observation area and is made of a transparent material.

[0008] Furthermore, the external dressing adheres to the outer side of the internal dressing and extends beyond the edge of the internal dressing on one side of the observation area.

[0009] Furthermore, the observation area arches upwards and forms a fixing groove on the inner side of the inner dressing, and the central venous catheter is placed in the fixing groove.

[0010] Furthermore, a limiting sticker is provided on one side of the fixing groove on the inner dressing, and the limiting sticker is attached to the other side of the fixing groove to make the fixing groove form a tubular structure.

[0011] Furthermore, the inner and outer sides of the limiting sticker are provided with adhesive layers.

[0012] The beneficial effects of this invention are as follows: By setting several observation holes on the inner dressing and placing cotton wool in the center of the inner dressing, the observation area formed by the observation holes is located on one side of the cotton wool. After the central venous catheter is inserted into the patient, the cotton wool of the inner dressing is placed on the puncture site. Then, the central venous catheter is positioned inside the inner dressing along the observation holes within the observation area. By comparing the observation holes with the control points on the central venous catheter, the position of the central venous catheter can be confirmed without repeatedly removing the inner dressing, thus avoiding infection at the puncture site caused by repeated removal of the inner dressing. Furthermore, because the inner dressing is made of breathable medical non-woven fabric, it ensures breathability at the puncture site while facilitating observation of the central venous catheter's position. Attached Figure Description

[0013] To facilitate understanding by those skilled in the art, the present invention will be further described below with reference to the accompanying drawings.

[0014] Figure 1 This is a schematic diagram of the outer structure of this utility model;

[0015] Figure 2 This is a schematic diagram of the inner structure of this utility model;

[0016] Illustrations: 1. Internal dressing; 2. External dressing; 3. Fixing groove; 4. Observation hole; 5. Cotton wool; 6. Positioning tape. Detailed Implementation

[0017] To further illustrate the technical means and effects adopted by this utility model in order to achieve the intended utility model purpose, the following detailed description of the specific implementation methods, structure, features and effects of this utility model is provided in conjunction with the accompanying drawings and preferred embodiments.

[0018] like Figures 1-2 As shown, a central venous catheter visualization fixation dressing includes an inner dressing, an adhesive layer on the inner side of the inner dressing, a cotton swab in the central area of ​​the inner side of the inner dressing, and a number of observation holes on the inner dressing from the center to the edge. The observation area formed by the number of observation holes is arranged in sequence and coincides with the reference area on the central venous catheter. Graduation lines are provided on the sides of the number of observation areas.

[0019] Because the graduations in existing technologies are mainly located on transparent dressings, this not only results in insufficient air permeability at the puncture site, but also leaves the dressing area corresponding to the puncture point without cotton wool for disinfection and hemostasis. If cotton wool is placed under the transparent dressing, the graduations cannot be observed. While using non-woven fabric dressings can ensure air permeability, the opaque nature of non-woven fabric makes it impossible to observe the position of central venous catheters or surgical drainage tubes.

[0020] To facilitate observation of the location of central venous catheters or surgical drainage tubes while simultaneously applying a breathable dressing to the puncture site, several observation holes are incorporated into the inner dressing. A cotton swab is placed in the center of the inner dressing, and the observation area formed by the observation holes is located on one side of the cotton swab. After the central venous catheter is inserted, the cotton swab is placed on the puncture site, and the central venous catheter is then positioned along the observation holes within the observation area on the inside of the inner dressing. By comparing the observation holes with the control points on the central venous catheter, the location of the central venous catheter can be confirmed without repeatedly removing the inner dressing, thus avoiding the risk of infection at the puncture site. Furthermore, because the inner dressing is made of breathable medical non-woven fabric, it ensures both breathability at the puncture site and easy observation of the location of the central venous catheter or surgical drainage tube. Since some surgeries require the drainage of pus, blood, and fluid accumulated between tissues or in body cavities to the outside of the body to prevent postoperative infection and promote wound healing, surgical area drainage tubes are used. Therefore, the visual fixation dressing in this embodiment can also be used for fixing surgical area drainage tubes.

[0021] In the above embodiments, the observation area is located on one side of the cotton swab. Although the cotton swab can be used for disinfection and hemostasis when applied to the puncture site, the observation hole on the observation area is close to the puncture site. If the patient's movements cause partial separation between the inner dressing and the skin, the puncture site may be exposed. To avoid this problem, in one embodiment, an outer dressing is also included. The outer dressing is attached to the observation area and is made of transparent material. By separately attaching the outer dressing to the observation area, and because the outer dressing is made of transparent material, it is easy to see the position of the central venous catheter in the observation hole. Since the outer dressing is only attached to the observation area and not to the cotton swab, the breathability of the puncture site can still be ensured.

[0022] Since the distal end of a central venous catheter is typically connected to other devices, to prevent the catheter from shifting or dislodging, in one embodiment, the external dressing adheres to the outer side of the internal dressing and extends beyond the edge of the internal dressing on the observation area side; for example... Figure 1 As shown, the observation area is located below the cotton swab. The external dressing extends outward along the left and right sides and the bottom side of the observation area, making the length of the external dressing in these three directions greater than that of the internal dressing. This allows the external dressing to further adhere and fix the central venous catheter, preventing it from loosening.

[0023] Because conventional medical non-woven fabric dressings are flat, when a central venous catheter is attached to the skin, the catheter protrudes, causing the inner dressing near the catheter placement location to not fully adhere to the skin, making it prone to loosening. Therefore, in one embodiment, the observation area arches upwards, forming a fixing groove on the inner side of the inner dressing, within which the central venous catheter is placed. The fixing groove is concave upwards relative to the inner side of the inner dressing, creating space below the groove to accommodate the central venous catheter. When the central venous catheter is attached to the skin, the inner side of the fixing groove conforms to the protruding shape of the catheter, and the inner dressing also adheres completely to the skin at the edge of the fixing groove without gaps, ensuring a tight fit between the inner dressing and the skin. Simultaneously, the shape of the fixing groove also limits the positioning of the central venous catheter. Since the adhesion area between the central venous catheter and the inner dressing is small, it is difficult to form a strong adhesive force; therefore, the fixing groove helps to limit its movement, preventing the central venous catheter from shifting. The observation area of ​​the internal dressing is located on the fixing groove, which limits the placement of the central venous catheter and facilitates observation, preventing misjudgment.

[0024] Furthermore, a limiting adhesive is provided on one side of the fixing groove on the inner dressing, and the limiting adhesive is attached to the other side of the fixing groove to form a tubular structure. Although the fixing groove is used for limiting in the above embodiment, the central venous catheter may still be relatively displaced from the inner dressing under the action of external force, causing the control point on the central venous catheter to deviate from the observation area. However, by setting the limiting adhesive on one side of the fixing groove of the inner dressing, after the position of the central venous catheter is determined, the limiting adhesive is used to bypass the central venous catheter and be attached to the other side of the fixing groove, so that the fixing groove and the limiting adhesive form a tubular structure. The limiting of the fixing groove and the limiting adhesive ensures that the central venous catheter is completely below the observation area, and even under the action of external force, the central venous catheter cannot be detached from the tubular structure of the fixing groove and the limiting adhesive. While similar tubular structures exist in existing technologies, these structures cannot be divided into two semi-enclosed structures. Therefore, they must be placed over the central venous catheter before puncture, making it difficult to adjust the position. In this embodiment, however, puncture can be performed first through central venous catheterization, and then the inner dressing can be applied and the central venous catheter can be fixed inside the tubular structure formed by the limiting dressing and the fixing groove, making it easier to adjust the position.

[0025] Furthermore, adhesive layers are provided on both the inner and outer sides of the positioning patch; the inner side of the fixing groove is adhered to the top side of the central venous catheter, while the inner side of the positioning patch is adhered to the bottom side of the central venous catheter, forming a complete circumferential fixation of the central venous catheter through the fixing groove and the positioning patch. The outer side of the positioning patch is adhered to the skin for fixed position.

[0026] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any way. Although the present utility model has been disclosed above with reference to a preferred embodiment, it is not intended to limit the present utility model. Any person skilled in the art can make some modifications or alterations to the above-disclosed technical content to create equivalent embodiments without departing from the scope of the present utility model. Any simple modifications, equivalent changes and alterations made to the above embodiments based on the technical essence of the present utility model without departing from the scope of the present utility model shall still fall within the scope of the present utility model.

Claims

1. A visual fixation dressing for central venous catheterization, characterized in that: The device includes an internal dressing, the inner side of which is provided with an adhesive layer, and the central area of ​​the inner side of which is provided with cotton wool. The internal dressing has several observation holes from the center to the edge. The observation area formed by the several observation holes arranged in sequence coincides with the reference area on the central venous catheter. The sides of the several observation areas are provided with scale lines.

2. The central venous catheter placement visualization fixation dressing according to claim 1, characterized in that: It also includes an external dressing, which is applied to the observation area and is made of a transparent material.

3. The central venous catheter placement visualization fixation dressing according to claim 2, characterized in that: The external dressing adheres to the outer side of the internal dressing and extends beyond the edge of the internal dressing on one side of the observation area.

4. The central venous catheter placement visualization fixation dressing according to claim 1, characterized in that: The observation area arches upwards and forms a fixing groove on the inner side of the inner dressing, and the central venous catheter is placed in the fixing groove.

5. A central venous catheter placement visualization fixation dressing according to claim 4, characterized in that: A limiting sticker is provided on one side of the fixing groove of the inner dressing, and the limiting sticker is attached to the other side of the fixing groove to form a tubular structure.

6. The central venous catheter placement visualization fixation dressing according to claim 5, characterized in that: The limiting sticker has an adhesive layer on both its inner and outer sides.

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