A dressing for a central venous catheter
By designing a protective ring mechanism and a sterile cotton rope structure in the central venous catheter dressing, the problem of sweat secretion affecting the adhesion effect of the dressing is solved, and longer use and better protection effect are achieved.
Patent Information
- Application Number
- CN202421335753.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-06-12
- Publication Date
- 2025-04-11
- Estimated Expiration
- 2034-06-12
AI Technical Summary
The existing central venous catheter dressing is prone to fall off in an environment where sweat is secreted more, resulting in poor adhesion effect and ineffective protection of the catheter insertion point.
A dressing including a protective film and an "O"-shaped protective ring mechanism is designed. The protective ring mechanism consists of an outer base ring, a second liquid absorbing layer, a first liquid absorbing layer and an inner base ring. The surface of the inner base ring is covered with a sterile cotton rope, and the second liquid absorbing layer is in contact with the sterile cotton rope, and sweat is sucked away and discharged through the sweat hole.
Effectively absorb and discharge sweat, maintain the adhesion effect of the adhesion agent, extend the use time of the dressing, avoid the adhesion layer caused by sweat, and improve the protection of the catheter insertion point.
Smart Images
Figure CN222738117U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of medical appliances, in particular to a dressing for a central venous catheter. Background Art
[0002] A central venous catheter is a catheter placed in the body, one end of which is inserted into the central vein in the body (such as the subclavian vein, internal jugular vein, external jugular vein or femoral vein), and the other end is used to infuse drugs or fluids, collect blood, etc. The central venous catheter is inserted into the patient's body surface and is often covered with dressings. Their main function is to protect the catheter insertion point and prevent infection and other complications.
[0003] Currently, regarding the use of dressings, since the sweat glands in the skin of some patients secrete a large amount of sweat, especially in hot weather, the excessive secretion of sweat can easily lead to the poor adhesion effect of the adhesive layer of the dressing, making it easy to fall off, and failing to effectively protect the catheter insertion point. The normal replacement time for the dressing is about once a week, but for patients with active sweat gland secretion, the dressing needs to be replaced as soon as it is removed, which not only increases the discomfort of the patients during treatment, but also increases the workload of doctors. Utility Model Content
[0004] The utility model aims to provide a dressing for a central venous catheter, which solves the problem that conventional dressings for central venous catheters are easily affected by sweat, resulting in poor adhesion effect.
[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a dressing for a central venous catheter, comprising a central venous catheter body and a dressing body, wherein the central venous catheter body comprises a fixing portion for fixing and connecting with skin tissue, and a connecting portion for connecting with a multi-tube body, wherein the dressing body covers the upper side of the fixing portion and the connecting portion, and wherein the dressing body comprises a protective film and an "O"-shaped protective sticker ring mechanism arranged at the outer edge of the protective film;
[0006] The protective ring mechanism includes an outermost outer base ring, an innermost first liquid absorbent layer, and a second liquid absorbent layer arranged between the outer base ring and the first liquid absorbent layer. The protective film is fixedly arranged between the second liquid absorbent layer and the outer base ring. The first liquid absorbent layer includes an inner base ring, and the surface of the inner base ring is evenly covered with a plurality of sterile cotton ropes. The second liquid absorbent layer is in contact with the sterile cotton rope. The surface of the inner base ring, the area between adjacent sterile cotton ropes, and the area inside the inner base ring where the protective film is located are all coated with an adhesive. The sterile cotton rope also covers the surface of the protective film in the middle of the inner base ring.
[0007] Preferably, a plurality of sweat holes A are provided in the "O"-shaped area where the protective film is sandwiched between the outer base ring and the second liquid-absorbent layer, a plurality of sweat holes B are provided on the surface of the outer base ring, and the sweat holes A are connected to the sweat holes B.
[0008] Preferably, the sterile cotton rope is configured to be wavy.
[0009] Preferably, the second liquid-absorbing layer comprises a plurality of vertical, evenly arranged strip-shaped liquid-absorbing pads, and the arrangement direction of the strip-shaped liquid-absorbing pads is consistent with the arrangement direction of the inner base sticker ring.
[0010] Preferably, one of the sterile cotton ropes is connected to at least two strip-shaped absorbent pads.
[0011] Preferably, a plurality of placement grooves for embedding and placing sterile cotton ropes are provided on the surface of the inner base ring, and the sterile cotton ropes and the inner base ring are in the same plane.
[0012] Preferably, the sweat holes A and the sweat holes B are arranged in a slit shape.
[0013] Compared with the prior art, the beneficial effects of the utility model are as follows:
[0014] The utility model provides a dressing for a central venous catheter. The inner base patch ring is attached to the patient's skin together with a protective film, and a plurality of sterile cotton ropes evenly arranged on the surface of the dressing ring are also attached to the skin surface. When sweat is secreted on the skin surface, the sterile cotton ropes absorb the sweat to prevent the sweat from affecting the adhesion effect of the adhesive. The contact between the second liquid-absorbing layer and the sterile cotton rope enables the sweat absorbed by the sterile cotton rope to be absorbed in time by the second liquid-absorbing layer, so that the sterile cotton rope maintains its moisture absorption capacity, further enables the skin surface attached to the protective film and the protective patch ring mechanism to remain dry and comfortable, and prolongs the adhesion time of the adhesive. BRIEF DESCRIPTION OF THE DRAWINGS
[0015] Figure 1 This is a schematic diagram of the front structure of the dressing body of the utility model;
[0016] Figure 2 This is a schematic diagram of the bottom structure of the dressing body of the utility model;
[0017] Figure 3 It is a structural schematic diagram of the protective sticker ring mechanism and the protective film of the utility model;
[0018] Figure 4 It is a schematic diagram of the disassembled structure of the protective sticker ring mechanism of the utility model.
[0019] In the figure: 1. central venous catheter body; 2. protective film; 21. perspiration hole A; 3. protective ring mechanism; 31. outer base ring; 311. perspiration hole B; 32. second absorbent layer; 321. strip absorbent pad; 33. first absorbent layer; 331. inner base ring; 332. placement groove; 333. sterile cotton rope. DETAILED DESCRIPTION
[0020] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.
[0021] In order to further understand the content of the utility model, the utility model is described in detail in conjunction with the accompanying drawings.
[0022] Combination Figure 1-Figure 4 A dressing for a central venous catheter comprises a central venous catheter body 1 and a dressing body. The central venous catheter body 1 comprises a fixing portion for fixing and connecting to skin tissue, and a connecting portion for connecting to a multi-tube body. The dressing body covers the upper side of the fixing portion and the connecting portion. The dressing body comprises a protective film 2 and an "O"-shaped protective ring mechanism 3 arranged on the outer edge of the protective film 2.
[0023] The utility model is further described below in conjunction with embodiments.
[0024] The protective ring mechanism 3 includes an outermost outer base ring 31, an innermost first absorbent layer 33, and a second absorbent layer 32 arranged between the outer base ring 31 and the first absorbent layer 33. The protective film 2 is fixedly arranged between the second absorbent layer 32 and the outer base ring 31. The first absorbent layer 33 includes an inner base ring 331, and the surface of the inner base ring 331 is evenly covered with a plurality of sterile cotton ropes 333. The second absorbent layer 32 and the sterile cotton rope 333 are in contact with each other. The surface of the inner base ring 331, the area between adjacent sterile cotton ropes 333, and the inner area of the protective film 2 in the inner base ring 331 are all coated with adhesive. The sterile cotton rope 333 also covers the surface of the protective film 2 in the middle of the inner base ring 331.
[0025] The technical principle and technical effect are as follows: by attaching the inner base adhesive ring 331 together with the protective film 2 to the patient's skin, the fixing part and the connecting part of the central venous catheter body 1 are pressed at the center of the protective film 2, the protective adhesive ring mechanism 3 is arranged at the edge of the protective film 2 to prevent the protective film 2 from curling, and the protective film 2 is tightly attached to the fixing part and the connecting part and also to the skin surface by pressing and deforming;
[0026] After the inner base ring 331 and the protective film 2 are attached to the skin, the multiple sterile cotton ropes 333 evenly arranged on the surface will also be attached to the skin surface. When sweat is secreted on the skin surface, the sterile cotton ropes 333 will absorb the sweat to prevent the sweat from affecting the adhesion effect of the adhesive. The contact between the second absorbent layer 32 and the sterile cotton rope 333 allows the sweat absorbed by the sterile cotton rope 333 to be absorbed in time by the second absorbent layer 32, so that the sterile cotton rope 333 maintains its moisture absorption capacity, further keeping the skin surface attached to the protective film 2 and the protective ring mechanism 3 dry and comfortable, and extending the adhesion time of the adhesive.
[0027] In the previous embodiment: the "O"-shaped area of the protective film 2 sandwiched by the outer base ring 31 and the second liquid absorbent layer 32 is provided with a plurality of sweat holes A21, and the surface of the outer base ring 31 is provided with a plurality of sweat holes B311, and the sweat holes A21 are connected to the sweat holes B311.
[0028] The above technical principle and technical effect are: while the second liquid absorbent layer 32 stores sweat, since it is attached to the patient's body, the sweat stored in the second liquid absorbent layer 32 is easily evaporated through the patient's body temperature, and the evaporated steam is discharged to the outside of the outer base ring 31 through the sweat holes A21 and the sweat holes B311, thereby facilitating the long-term use of the dressing body.
[0029] In the previous embodiment: the sterile cotton rope 333 is configured to be wavy.
[0030] The above technical principle and technical effect are: when the middle part of the protective film 2 is pressed to deform and fit the fixed part, the connecting part and the skin surface, the wavy sterile cotton rope 333 has a reserved length to adaptively change with the deformation of the protective film 2, so that after the protective film 2 is deformed, it can still fit tightly to the skin surface with the protective film 2.
[0031] In the previous embodiment, the second liquid-absorbing layer 32 includes a plurality of vertical and uniformly arranged strip-shaped liquid-absorbing pads 321 , and the arrangement direction of the strip-shaped liquid-absorbing pads 321 is consistent with the arrangement direction of the inner base sticker ring 331 .
[0032] In the previous embodiment: one sterile cotton rope 333 is connected to at least two strip-shaped liquid-absorbing pads 321 .
[0033] The above technical principle and technical effect are: it ensures that while fully contacting with multiple sterile cotton ropes 333, the connection between the strip absorbent pad 321 and the sterile cotton ropes 333 forms a frame structure, which further promotes the stability of the structure of the protective ring mechanism 3 and reduces the possibility of curling at the edge of the protective ring mechanism 3.
[0034] In the previous embodiment: a plurality of placement grooves 332 for embedding and placing the sterile cotton rope 333 are provided on the surface of the inner base ring 331 , and the sterile cotton rope 333 and the inner base ring 331 are in the same plane.
[0035] The technical principle and effect are as follows: the inner base ring 331 is embedded in the placement groove 332 so that the sterile cotton rope 333 and the inner base ring 331 are in the same plane, thereby avoiding the inner base ring 331 being uneven on one side that contacts the skin, which weakens the adhesion effect.
[0036] In the previous embodiment: the sweat holes A21 and the sweat holes B311 are arranged in a slit shape.
[0037] The above technical principle and technical effect are: the sweat steam effect of the sweat holes A21 and the sweat holes B311 is evaporated by the heat of the body, so the gap shape can also play a sweat steam effect, and the gap-shaped setting makes its opening smaller, so it is difficult for bacteria and pollutants in the external environment to enter the inner side of the protective film 2 through the gap, avoiding an increased risk of infection.
[0038] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.
[0039] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.
Claims
1. A dressing for a central venous catheter, comprising a central venous catheter body (1) and a dressing body, wherein the central venous catheter body (1) comprises a fixing portion for fixing and connecting with skin tissue, and a connecting portion for connecting with a multi-tube body, wherein the dressing body covers the upper side of the fixing portion and the connecting portion, and is characterized in that: The dressing body comprises a protective film (2) and an "O"-shaped protective ring mechanism (3) arranged on the outer edge of the protective film (2); The protective ring mechanism (3) comprises an outermost outer base ring (31), an innermost first liquid absorbent layer (33), and a second liquid absorbent layer (32) arranged between the outer base ring (31) and the first liquid absorbent layer (33); the protective film (2) is fixedly arranged between the second liquid absorbent layer (32) and the outer base ring (31); the first liquid absorbent layer (33) comprises an inner base ring (331), and the surface of the inner base ring (331) is evenly covered with a plurality of sterile cotton ropes (333); the second liquid absorbent layer (32) and the sterile cotton ropes (333) are in contact with each other; the surface of the inner base ring (331), the area between adjacent sterile cotton ropes (333), and the inner area of the protective film (2) in the inner base ring (331) are all coated with an adhesive; the sterile cotton rope (333) also covers the surface of the protective film (2) in the middle of the inner base ring (331).
2. A central venous catheter dressing according to claim 1, characterized in that: The "O"-shaped area of the protective film (2) sandwiched between the outer base sticker ring (31) and the second liquid-absorbing layer (32) is provided with a plurality of sweat discharge holes A (21), and the surface of the outer base sticker ring (31) is provided with a plurality of sweat discharge holes B (311), and the sweat discharge holes A (21) are connected to the sweat discharge holes B (311).
3. A dressing for a central venous catheter according to claim 1, characterized in that: The sterile cotton rope (333) is configured to be wavy.
4. A central venous catheter dressing according to claim 1, characterized in that: The second liquid-absorbing layer (32) comprises a plurality of vertically evenly arranged strip-shaped liquid-absorbing pads (321), and the arrangement direction of the strip-shaped liquid-absorbing pads (321) is consistent with the arrangement direction of the inner base adhesive ring (331).
5. A central venous catheter dressing according to claim 4, characterized in that: One of the sterile cotton ropes (333) is connected to at least two strip-shaped liquid-absorbing pads (321).
6. A dressing for a central venous catheter according to claim 1 or 2, characterized in that: The surface of the inner base ring (331) is provided with a plurality of placement grooves (332) for embedding and placing the sterile cotton rope (333), and the sterile cotton rope (333) and the inner base ring (331) are in the same plane.
7. A dressing for a central venous catheter according to claim 2, characterized in that: The sweat discharge holes A (21) and the sweat discharge holes B (311) are arranged in a slit shape.