Multifunctional catheter fixing device containing chitosan applying core
By using chitosan sponge layer absorption pad in the catheter fixation device, the wound infection and unstable exudate fixation caused by traditional devices are solved, and rapid healing and efficient exudate absorption are achieved, improving the effectiveness of the device.
Patent Information
- Application Number
- CN202422127126.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-08-30
- Publication Date
- 2025-07-11
- Estimated Expiration
- 2034-08-30
AI Technical Summary
Traditional medical catheter fixation devices can easily lead to wound infection, itching, redness, swelling and allergies after long-term use, and the seepage is not firmly fixed, affecting wound healing.
The chitosan sponge layer is used as an absorption pad, combined with the non-woven fabric layer and the release layer to form a multifunctional catheter fixation device, using the antibacterial, hemostasis and healing properties of chitosan, combined with breathability and biocompatibility, and improving the leachate absorption capacity.
It improves the healing speed of wounds, reduces the frequency of device replacement, reduces the risk of infection, enhances the serous fixation effect, and prolongs the use time.
Smart Images
Figure CN223082083U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field of medical devices, and particularly relates to a multifunctional catheter fixing device containing a chitosan dressing core. Background Technique
[0002] Medical catheter fixing devices are sterile medical device products for single use, which are suitable for fixing drainage tubes and catheters during use on the body surface and are in contact with the wound. The working principle is to fix the catheter fixing device to the wound site by using a glue-coated substrate or a fixing band, and fix the drainage tube or catheter through the pressure generated by a fixing buckle or an adjustable sticky fastener, so as to play a role in fixing and preventing detachment. It mainly plays a fixing role on the drainage tube and catheter through the pressure generated by the adjustable catheter fixing lock, and the adhesion of the fixing adhesive patch to the skin around the catheter on the patient's body surface plays a fixing role on the catheter fixing device, so as to effectively fix various drainage tubes and catheters in clinical departments on the patient's skin, prevent the drainage tube or catheter from being displaced, absorb the exudate from the wound, protect the wound, and reduce wound infection.
[0003] The production process of this product is mature and has been used clinically for many years. The main structural components of the medical catheter fixing device include: the body surface fixing part and the catheter fixing part. The body surface fixing part is a non-woven fabric coated with medical pressure-sensitive adhesive, a dressing core absorbent pad, and a release layer; the catheter fixing part is a fixing seat and a plastic buckle. Commonly used absorbent pads in this product are generally hydrocolloid absorbent pads, polyurethane sponges, absorbent cotton or non-woven fabric sheets, which can be used to absorb bleeding and exudate from the wound. Once the application time is too long or it is soaked by wound exudate or external liquid, it will lose the function of the wound dressing, easily leading to symptoms such as wound infection, itching, swelling, allergy, etc., and even causing wound deterioration. Content of the Utility Model
[0004] The purpose of the utility model is to solve the deficiencies existing in the above background technique, and provide a multifunctional catheter fixing device containing a chitosan dressing core, which helps to achieve ideal hemostasis, antibacterial, wound healing promotion, and is beneficial to achieve good air permeability, biocompatibility, and good exudate absorption performance.
[0005] The technical solution adopted by the utility model is: a multifunctional catheter fixing device containing a chitosan dressing core, including a fixator for fixing a medical catheter, the bottom of the fixator is attached to the upper surface of a non-woven fabric layer, the outer edge of the bottom of the fixator is fixed to the upper surface of the non-woven fabric layer through a paste film, the lower surface of the non-woven fabric layer is attached to the upper surface of a release layer, and a dressing core absorbent pad is arranged between the non-woven fabric layer and the release layer, and the dressing core absorbent pad is a chitosan sponge layer.
[0006] A further preferably structured, the chitosan sponge layer is a mutually cross-linked microporous layer structure.
[0007] A further preferred structure is that the area of the non-woven fabric layer is equal to the area of the release layer.
[0008] A further preferred structure is that the area of the core absorbent pad is smaller than the areas of the non-woven fabric layer and the release layer.
[0009] A further preferred structure is that both the non-woven fabric layer and the release layer are rectangular.
[0010] A further preferred structure is that the core absorbent pad is circular.
[0011] A further preferred structure is that a buckle is provided at the top of the fixator.
[0012] A further preferred structure is that coaxial central holes for a medical catheter to pass through are provided at the centers of the adhesive film, the non-woven fabric layer, the core absorbent pad, and the release layer.
[0013] A further preferred structure is that first notches, second notches, third notches, fourth notches, and fifth notches for installing a medical catheter are respectively provided at the same positions on the adhesive film, the fixator, the non-woven fabric layer, the core absorbent pad, and the release layer.
[0014] Chitosan is a naturally occurring polysaccharide fiber material. Due to its advantages such as blood coagulation, antibacterial properties, good biocompatibility, and biodegradability, it shows great application potential in the fields of materials science and biomedicine. Chitosan-based absorbent pads show good biocompatibility and biodegradability during the wound healing process, and at the same time, they also have the functions of hemostasis and pain relief, repairing damaged cells, promoting wound healing, and nourishing and repairing mucous membranes.
[0015] In the present utility model, a core absorbent pad with a chitosan sponge layer is used to replace the traditional absorbent pad, and a multifunctional medical catheter fixing device is assembled. While fixing the catheter, it can well repair damaged cells and promote rapid wound healing.
[0016] The present utility model combines the catheter fixing function of the medical catheter fixing device with the good liquid absorption, hemostasis, and wound healing promotion of the chitosan sponge layer to form a multifunctional product, solving the problems of slow wound healing and insecure fixation of exudate outflow in the traditional single catheter fixing function. At the same time, the core absorbent pad with a chitosan sponge layer can better adapt to exudative wounds, greatly reducing the replacement frequency of the catheter fixing device and extending the service life. BRIEF DESCRIPTION OF THE DRAWINGS
[0017] Figure 1 It is a schematic structural diagram of the present utility model (excluding the buckle);
[0018] Figure 2 It is an exploded view of the present utility model;
[0019] Figure 3It is a diagram showing the positional relationship among a non-woven fabric, an absorption pad, and a release liner.
[0020] In the figure, 1 - buckle; 2 - adhesive film (2-1 - first notch); 3 - fixator (3-1 - second notch); 4 - non-woven fabric layer (4-1 - third notch); 5 - core dressing absorption pad (5-1 - fourth notch); 6 - release liner (6-1 - fifth notch). Detailed implementation mode
[0021] The following further elaborates on the present utility model in conjunction with the accompanying drawings and specific embodiments for a clear understanding of the present utility model, but they do not constitute a limitation to the present utility model.
[0022] As Figure 1-2 shown, the present utility model includes a fixator 3 for fixing a medical catheter. The bottom of the fixator 3 is attached to the upper surface of the non-woven fabric layer 4. The outer edge of the bottom of the fixator 3 is fixed to the upper surface of the non-woven fabric layer 4 through the adhesive film 2. The lower surface of the non-woven fabric layer 4 is attached to the upper surface of the release liner 6. As Figure 3 shown, a core dressing absorption pad 5 is provided between the non-woven fabric layer 4 and the release liner 6. The core dressing absorption pad 5 is a chitosan sponge layer.
[0023] Among them, the chitosan sponge layer is a mutually cross-linked microporous layer structure, that is, a mutually cross-linked microporous layer structure made of chitosan polysaccharide fiber material.
[0024] As Figure 2 shown, the area of the non-woven fabric layer 4 is equal to the area of the release liner 6. The area of the core dressing absorption pad 5 is smaller than the areas of the non-woven fabric layer 4 and the release liner 6.
[0025] Both the non-woven fabric layer 4 and the release liner 6 are rectangular. The core dressing absorption pad 5 is circular.
[0026] A buckle 1 is provided at the top of the fixator 3.
[0027] Coaxial central holes for the medical catheter to pass through are provided at the centers of the adhesive film 2, the non-woven fabric layer 4, the core dressing absorption pad 5, and the release liner 6.
[0028] At the same positions on the adhesive film 2, the fixator 3, the non-woven fabric layer 4, the core dressing absorption pad 5, and the release liner 6, a first notch 2-1, a second notch 3-1, a third notch 4-1, a fourth notch 5-1, and a fifth notch 6-1 are respectively provided for installing the medical catheter.
[0029] The utility model comprises two parts: a body surface fixing piece and a catheter fixing piece. The body surface fixing piece is usually a glue-coated base material, which is composed of a non-woven fabric layer 4 coated with a medical pressure-sensitive adhesive, a core dressing absorbent pad 5, and a release layer 6; the catheter fixing piece is usually a fixator 3 (a cylindrical fixing seat with a central hole) and a plastic buckle 1. The two component parts are fixedly assembled together. The materials and functions of each part are shown in the following table:
[0030]
[0031] The chitosan sponge layer is a cross-linked microporous layered structure, which has excellent liquid absorption capacity, provides support for the interaction between cells, and thus promotes wound healing. At the same time, it also has the advantages of good air permeability, ability to isolate bacteria, soft material, and can reduce the damage to the wound. When preparing the core dressing absorbent pad 5 of the chitosan sponge layer, the chitosan solution is stirred in an acidic environment to make it foam, and after cross-linking, it is transformed into a chitosan sponge layer dressing by freeze-drying technology. The core dressing absorbent pad 5 of the chitosan sponge layer is placed between the non-woven fabric layer 4 and the release layer 6. The areas of the non-woven fabric layer 4 and the release layer 6 should be larger than the main body of the absorbent pad.
[0032] The assembly steps of the utility model are as follows:
[0033] Assemble the body surface fixing piece. Prepare a clean and sterile core dressing absorbent pad 5 of the medical chitosan sponge layer and cut it into a suitable circular size. Assemble the body surface fixing piece according to the above figure, select a puncher suitable for the round hole of the fixator, and punch the assembled body surface fixing piece.
[0034] Assemble the catheter fixing piece. First, punch the transparent TPU adhesive film 2 and make a cut as shown in the figure. Align the fixator 3 with the punched hole, fix it with the adhesive film 2, and fasten the buckle. The core dressing absorbent pad 5 is not installed temporarily.
[0035] Align the assembled catheter fixing piece from the upper part with the hole position, attach it to the body surface fixing piece, paste the core dressing absorbent pad 5 of the medical chitosan sponge layer at the bottom of the body surface fixing piece, and finally cover the complete release layer 6. The product is assembled.
[0036] Put it into a paper-plastic bag and carry out ethylene oxide sterilization treatment. When in use, gently tear off the release layer, align the catheter fixing device with the body surface catheter and pierce through, and paste it at the perforation.
[0037] The content not described in detail in this specification belongs to the prior art well-known to those skilled in the art.
Claims
1. A multifunctional catheter fixing device with a chitosan-containing dressing core, comprising a fixator (3) for fixing a medical catheter, the bottom of the fixator (3) being attached to the upper surface of a non-woven fabric layer (4), and the outer edge of the bottom of the fixator (3) being fixed to the upper surface of the non-woven fabric layer (4) through an adhesive film (2), characterized in that: The lower surface of the non-woven fabric layer (4) is adhered to the upper surface of the release layer (6). A core-applied absorbent pad (5) is provided between the non-woven fabric layer (4) and the release layer (6), and the core-applied absorbent pad (5) is a chitosan sponge layer.
2. The multifunctional catheter fixing device with a chitosan-containing core according to claim 1, characterized in that: The chitosan sponge layer is a mutually cross-linked microporous layered structure.
3. The multifunctional catheter fixing device with a chitosan-coated core according to claim 1, characterized in that: The area of the non-woven fabric layer (4) is equal to the area of the release layer (6).
4. The multifunctional catheter fixing device with a chitosan-containing core according to claim 1, characterized in that: The area of the core-applied absorbent pad (5) is smaller than the areas of the non-woven fabric layer (4) and the release layer (6).
5. A multifunctional catheter fixing device containing a chitosan dressing core according to claim 1, characterized in that: Both the non-woven fabric layer (4) and the release layer (6) are rectangular.
6. The multifunctional catheter fixing device with a chitosan-containing core according to claim 1, characterized in that: The core-applied absorbent pad (5) is circular.
7. A multifunctional catheter fixing device with a chitosan-coated core according to claim 1, characterized in that: A buckle (1) is provided at the top of the fixator (3).
8. The multifunctional catheter fixing device with a chitosan-containing core according to claim 1, characterized in that: Coaxial central holes for a medical catheter to pass through are provided at the centers of the adhesive film (2), the non-woven fabric layer (4), the core-applied absorbent pad (5), and the release layer (6).
9. The multifunctional catheter fixing device with a chitosan-coated core according to claim 1, characterized in that: First notches (2-1), second notches (3-1), third notches (4-1), fourth notches (5-1), and fifth notches (6-1) for installing a medical catheter are provided at the same positions on the adhesive film (2), the fixator (3), the non-woven fabric layer (4), the core-applied absorbent pad (5), and the release layer (6), respectively.