Pressure and migration resistant indwelling needle patch
By designing an anti-pressure and anti-displacement indwelling needle dressing, and utilizing a pressure-relieving adhesive pad and a multi-layer dressing structure, the problems of unstable fixation, difficult removal, and discomfort of indwelling needles are solved, achieving comfortable and stable indwelling needle wearing.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- NINGBO ZHENHAI DISTRICT LONGSAI MEDICAL GRP
- Filing Date
- 2025-04-10
- Publication Date
- 2026-06-16
AI Technical Summary
Existing methods of fixing indwelling needles suffer from poor constraint stability, cumbersome removal procedures, and lack of cushioning, leading to discomfort and pressure on the catheter hub.
An anti-pressure and anti-displacement indwelling needle dressing was designed, comprising a pressure-relieving pad and a multi-layer dressing structure. The pressure-relieving pad provides cushioning, while the multi-layer dressing ensures stability and prevents displacement. Through the cooperation of the side support of the pressure-relieving pad and the multi-layer dressing, the indwelling needle is stably fixed and comfortably worn.
It improves the comfort of wearing indwelling needles, simplifies the fixation and removal process, reduces discomfort, and effectively prevents displacement and deformation of indwelling needles, maintaining the stability of indwelling needles on the skin.
Smart Images
Figure CN224357852U_ABST
Abstract
Description
Technical Field
[0001] This application relates to the field of medical supplies technology, and in particular to an indwelling needle dressing that prevents pressure and displacement. Background Technology
[0002] An indwelling intravenous catheter consists of a stainless steel core, a soft outer cannula, and a plastic needle hub. During insertion, the outer cannula and core are inserted into the blood vessel together. Once the cannula is in place, the core is withdrawn, leaving only the soft outer cannula in the vessel for infusion. This type of infusion device is suitable for intermittent, continuous, or daily intravenous infusion therapy, avoiding the pain of repeated punctures.
[0003] To ensure the stability of the indwelling catheter in the patient's body, multiple pieces of medical tape are usually used to fix it. This not only provides poor stability for the indwelling catheter, but also makes both the adhesion process and the removal process of the indwelling catheter quite troublesome. Moreover, the medical tapes often overlap, and when one piece of medical tape is peeled off, it will pull on the other pieces, obstructing the removal process. Furthermore, the medical tapes cannot provide cushioning for the indwelling catheter seat that protrudes from the patient's skin, so the easily compressed catheter seat can also cause discomfort to the patient. Utility Model Content
[0004] The purpose of this application is to provide an indwelling needle dressing that is easier to install and remove, more comfortable to wear, and prevents pressure and displacement.
[0005] To achieve the above objectives, this application provides an anti-pressure and anti-displacement indwelling needle dressing: comprising a pressure-relieving pad, the bottom surface of which has a pair of side support portions, a middle pressing groove formed between the two side support portions, a first dressing piece fixedly connected to the upper surface of the pressure-relieving pad, the first dressing piece including a main dressing, the lower surface of which has a wide adhesive surface suitable for adhesion to the skin, a pair of second dressing pieces disposed on the end face of the pressure-relieving pad, the projections of the two second dressing pieces on the horizontal plane being outside the first dressing pieces, each second dressing piece including a secondary dressing, the lower surface of which has a narrow adhesive surface also suitable for adhesion to the skin, for fixing the dressing itself and the indwelling needle body.
[0006] As a preferred option, the pressure-relieving pad is made of hydrocolloid dressing, which can provide cushioning for the indwelling needle catheter seat by utilizing its own soft elasticity, thereby reducing pressure discomfort.
[0007] As a preferred embodiment, the intermediate pressing groove is larger at one end and smaller at the other end, and the intermediate pressing groove gradually narrows from the larger end to the smaller end. The larger end of the intermediate pressing groove is suitable for pressing with the larger end of the indwelling needle catheter seat, and the smaller end of the intermediate pressing groove is suitable for pressing with the smaller end of the indwelling needle catheter seat, so as to better fit the outer side of the indwelling needle catheter seat.
[0008] As a preferred embodiment, the two auxiliary dressings and the larger end of the intermediate pressing groove are located on the same end face of the pressure-relieving pad, which is used to provide the pressure-relieving pad with a traction force opposite to the insertion direction of the indwelling needle catheter.
[0009] Preferably, the upper surface of the sub-application is flush with the upper surface of the pressure-relieving pad, so that the sub-application, when adhered to the skin, can provide a downward pressure component close to the skin to the pressure-relieving pad.
[0010] As a preferred embodiment, the auxiliary dressing and the pressure-relieving pad are an integral structure, making it difficult for the auxiliary dressing to separate from the pressure-relieving pad and providing stable traction pressure.
[0011] As a preferred embodiment, a first dustproof film is adhered to the lower surface of the wide adhesive surface. The first dustproof film has a relief groove, and the pressure-relieving pad is located in the relief groove and is directly bonded to the wide adhesive surface.
[0012] As a preferred embodiment, the main dressing is made of non-woven fabric, and the first dustproof film is made of polyvinyl chloride material, which is easy to remove.
[0013] As a preferred embodiment, the narrow adhesive surface is double-sided adhesive, and the lower surfaces of the two narrow adhesive surfaces are jointly adhered with a second dustproof film, allowing the protective film under the two narrow adhesive surfaces to be peeled off simultaneously.
[0014] As a preferred embodiment, the substrate of the narrow adhesive surface is made of paper, and the second dustproof film is made of polyvinyl chloride material, which has good flexibility and is not easily torn during the removal process, so it is not afraid of being pulled.
[0015] Compared with the prior art, the beneficial effects of this application are as follows:
[0016] (1) By setting a pressure-relieving pad structure under the dressing, the protruding indwelling needle catheter seat on the skin is covered, providing an effective pressure buffer for the indwelling needle catheter seat, reducing the discomfort when under pressure, and the symmetrical side support at the bottom of the pressure-relieving pad can share the pressure on the indwelling needle catheter seat, and the pressure is effectively dispersed on the patient's skin, which can effectively improve the wearing comfort of the indwelling needle.
[0017] (2) The large-area main dressing can restrain most of the indwelling needle, making the pasting and removal operations more convenient and quick. The secondary dressing can play a role in reverse traction and restriction, and has a good anti-displacement and anti-deformation function. The entire indwelling needle dressing can keep the indwelling needle on the patient's skin with good stability. Attached Figure Description
[0018] Figure 1 This is a first three-dimensional schematic diagram of the overall structure of the indwelling needle dressing for preventing pressure and displacement.
[0019] Figure 2 This is a second three-dimensional schematic diagram of the overall structure of the anti-pressure and anti-displacement indwelling needle dressing.
[0020] Figure 3 A three-dimensional structural diagram of the indwelling needle dressing after removing the first and second dustproof films.
[0021] Figure 4 A three-dimensional structural diagram showing the connection between the second dressing patch and the pressure-relieving pad for the indwelling needle, which is used for pressure and displacement prevention.
[0022] Figure 5 A side-view plan sectional view of the second dressing patch for the anti-pressure and anti-displacement indwelling needle, connected to the pressure-relieving pad.
[0023] Figure 6 A three-dimensional structural diagram showing the connection between the second dustproof film and the first dressing for the pressure- and displacement-resistant indwelling needle.
[0024] Figure 7 A three-dimensional structural diagram of the first dressing patch for the anti-pressure and anti-displacement indwelling needle.
[0025] In the diagram: 1. First dressing; 101. Main dressing; 102. Wide adhesive surface; 2. Second dressing; 201. Secondary dressing; 202. Narrow adhesive surface; 3. First dustproof film; 301. Relief groove; 4. Second dustproof film; 5. Pressure-relieving pad; 501. Side support; 502. Middle pressing groove. Detailed Implementation
[0026] The present application will be further described below with reference to specific embodiments. It should be noted that, without conflict, the various embodiments or technical features described below can be arbitrarily combined to form new embodiments.
[0027] In the description of this application, it should be noted that the directional terms such as "center", "lateral", "longitudinal", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", and "counterclockwise" indicate the orientation and positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. They should not be construed as limiting the specific protection scope of this application.
[0028] It should be noted that the terms "first," "second," etc., in the specification and claims of this application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence.
[0029] The terms “comprising” and “having”, and any variations thereof, in the specification and claims of this application are intended to cover non-exclusive inclusion, for example, a process, method, system, product, or device that includes a series of steps or units is not necessarily limited to those steps or units that are explicitly listed, but may include other steps or units that are not explicitly listed or that are inherent to such process, method, product, or device.
[0030] like Figure 1-7 The pressure-relieving and displacement-preventing indwelling needle dressing shown includes a skin-friendly and soft, elastic pressure-relieving pad 5. The pressure-relieving pad 5 is made of hydrocolloid dressing, which is a dressing made by mixing elastic polymeric hydrogel with synthetic rubber and adhesives. It effectively reduces pressure and prevents pressure injuries. The polymeric hydrogel often uses carboxymethyl cellulose, which can firmly adhere to the skin at the wound edge, stabilizing the needle's position on the skin. To facilitate the mating of the pressure-relieving pad 5 with the protruding indwelling needle catheter seat, the pressure-relieving pad 5 has a specific shape. Specifically, the bottom surface of the pressure-relieving pad 5 has a pair of symmetrical side support portions 50. 1. The two ends of the side support 501 are flush with the two ends of the pressure-relieving pad 5. An intermediate pressing groove 502 is formed between the two side support 501 to accommodate the catheter seat of the indwelling needle. One end of the intermediate pressing groove 502 is larger and the other end is smaller. The intermediate pressing groove 502 gradually narrows from the larger end to the smaller end, which is adapted to the shape of the indwelling needle catheter seat. In this way, it is necessary to observe the placement direction during the fitting process so that the larger end of the intermediate pressing groove 502 is pressed with the larger end of the indwelling needle catheter seat, and the smaller end of the intermediate pressing groove 502 is pressed with the smaller end of the indwelling needle catheter seat. In this way, the pressure-relieving pad 5 will fit more tightly with the indwelling needle catheter seat.
[0031] The upper surface of the pressure-relieving pad 5 is fixedly connected to a first dressing 1. The first dressing 1 has at least a two-layer structure. The first dressing 1 includes a main dressing 101 located at the top. The main dressing 101 is made of non-woven fabric, which is environmentally friendly, breathable, and easy to tear and stick. The lower surface of the main dressing 101 has a wide adhesive surface 102, which can be formed by directly coating the lower surface of the main dressing 101 with adhesive for direct adhesion to the skin. The lower surface of the wide adhesive surface 102 is usually also adhered with a... The first dustproof film 3 is made of polyvinyl chloride material, which has good flexibility and can easily adhere to the wide adhesive surface 102. Before the wide adhesive surface 102 adheres to the skin, it can play a good role in shielding and protecting. The first dustproof film 3 has a relief groove 301, which is flush with the side of the first dustproof film 3. The pressure-relieving pad 5 is located in the relief groove 301 and is bonded to the exposed wide adhesive surface 102 in the relief groove 301.
[0032] A pair of second dressing pieces 2 are provided on the end face of the pressure-relieving pad 5. The second dressing pieces 2 and the pressure-relieving pad 5 are not completely separate structures. It should be noted that the projections of the two second dressing pieces 2 on the horizontal plane are both outside the first dressing piece 1. That is to say, the second dressing pieces 2 and the first dressing piece 1 extend in two opposite directions. Each second dressing piece 2 includes a sub-dress 201. The sub-dress 201 and the pressure-relieving pad 5 are an integral structure. The sub-dress 201 is also made of hydrocolloid dressing. Since hydrocolloid dressing itself has high tensile strength, it can withstand a large traction force without breaking. Its tensile strength is not inferior to that of silicone. The two sub-dresses 201 and the larger end of the intermediate pressing groove 502 are located on the same end face of the pressure-relieving pad 5. In this way, the sub-dresses 201 can apply a traction force opposite to the insertion direction of the indwelling needle catheter to prevent deformation or displacement of the indwelling needle. The upper surface of the sub-dresses 201 and the pressure-relieving pad 5 are connected. The upper surface of the pressure pad 5 is flush. Since the thickness of the sub-application 201 is significantly less than that of the pressure-relieving pad 5, the sub-application 201 connected to the skin will give the pressure-relieving pad 5 a component force that presses against the skin. The lower surface of the sub-application 201 has a narrow adhesive surface 202, which is also used to directly adhere to the skin. The narrow adhesive surface 202 is usually made of double-sided tape. The lower surface of the double-sided tape adheres to the skin, and the upper surface adheres to the sub-application 201. The base material of the narrow adhesive surface 202 is paper. After the narrow adhesive surface 202 has been adhered once, it can be peeled off from the lower surface of the sub-application 201. In this way, the sub-application 201, which is integrated with the pressure-relieving pad 5, can be recycled along with the pressure-relieving pad 5. The lower surfaces of the two narrow adhesive surfaces 202 are jointly adhered with a second dustproof film 4. The second dustproof film 4 is also made of a flexible polyvinyl chloride material. It is kept covered until the narrow adhesive surface 202 needs to be adhered, which can effectively maintain the subsequent adhesion of the narrow adhesive surface 202.
[0033] Working principle: Before use, the first dustproof film 3 adheres to the lower surface of the wide adhesive surface 102, and the second dustproof film 4 adheres to the lower surfaces of the two narrow adhesive surfaces 202. The entire indwelling needle dressing is protected within a sealed plastic bag. When it is necessary to insert an indwelling needle into a patient, the plastic bag of the indwelling needle dressing can be opened. The indwelling needle dressing is held between the index finger and thumb of one hand, and then the puncture operation is performed on the patient. After the puncture is completed, the hand holding the indwelling needle dressing presses on the catheter extension arm and extension tube at the end of the indwelling needle catheter hub, and then confirms the indwelling needle dressing. To check if the orientation is correct, use your other hand to peel off the first dustproof film 3 on the lower surface of the indwelling needle dressing. Press the pressure-relieving pad 5 firmly onto the raised indwelling needle catheter seat on the skin. The middle pressing groove 502 should just bite into the indwelling needle catheter seat. The two side support parts 501 should contact the skin and provide support. Then, press down on the main dressing 101 to make the wide adhesive surface 102 adhere to the patient's skin. Except for the end that needs to be inserted later and the sealing clamp, the rest of the indwelling needle, mainly the extension tube, can be pressed under the main dressing 101 to maintain stability relative to the patient's skin.
[0034] With one hand, gently press down on the main dressing 101 and the pressure-relieving pad 5. With the other hand, peel off the second dust cover 4 to expose the two narrow adhesive surfaces 202. Do not rush to let the narrow adhesive surfaces 202 adhere to the skin. First, pull one of the auxiliary dressings 201 to place it on one side of the indwelling needle catheter seat and bring it close to the patient's skin. Then, adhere the soft extension tube of the indwelling needle to the patient's skin together. Then, pull the other auxiliary dressing 201 to place it on the other side of the indwelling needle catheter seat and adhere it directly to the patient's skin. Since the main dressing 101 provides a traction force along the extension direction of the indwelling needle catheter, and the two auxiliary dressings 201 provide two traction forces along the extension direction of the indwelling needle catheter seat, the two traction forces are opposite, and the resulting force will press the indwelling needle catheter seat tightly to the patient's skin through the pressure-relieving pad 5. Therefore, it can maintain the stability of the indwelling needle placement on the patient's body.
[0035] After use, the auxiliary dressing 201 and the main dressing 101 can be peeled off at the same time. Then, the pressure-relieving pad 5 can be separated from the catheter seat of the indwelling needle, and the catheter of the indwelling needle can be withdrawn from the patient's vein. The indwelling needle dressing can be further disassembled. First, the pressure-relieving pad 5 can be peeled off from the lower surface of the main dressing 101 and separated from the wide adhesive surface 102. Then, the narrow adhesive surface 202 can be peeled off from the lower surface of the auxiliary dressing 201. In this way, the parts of different materials can be sorted and recycled, which improves recycling efficiency and reduces recycling costs.
[0036] The basic principles, main features, and advantages of this application have been described above. Those skilled in the art should understand that this application is not limited to the above embodiments. The embodiments and descriptions in the specification are merely the principles of this application. Various changes and modifications can be made to this application without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claims. The scope of protection claimed by this application is defined by the appended claims and their equivalents.
Claims
1. A pressure and migration resistant indwelling needle patch, characterized by: The application relates to a slow-pressure adhesive pad (5), the bottom surface of which is provided with a pair of side supporting parts (501), a middle pressing groove (502) is formed between the two side supporting parts (501), the upper surface of the slow-pressure adhesive pad (5) is fixedly connected with a first adhesive patch (1), the first adhesive patch (1) comprises a main adhesive patch (101), the lower surface of the main adhesive patch (101) is provided with a wide adhesive surface (102) suitable for being bonded with the skin, the end surface of the slow-pressure adhesive pad (5) is provided with a pair of second adhesive patches (2), the projections of the two second adhesive patches (2) on the horizontal plane are both located outside the first adhesive patch (1), each second adhesive patch (2) comprises a sub-adhesive patch (201), the lower surface of the sub-adhesive patch (201) is provided with a narrow adhesive surface (202) also suitable for being bonded with the skin.
2. The anti-pressure and anti-migration indwelling needle patch of claim 1, wherein: The slow-pressure adhesive pad (5) is made of hydrocolloid dressing.
3. The anti-pressure and anti-migration indwelling needle patch of claim 2, wherein: The middle pressing groove (502) is large at one end and small at the other end, the middle pressing groove (502) gradually narrows from the larger end to the smaller end, the larger end of the middle pressing groove (502) is suitable for being pressed with the larger end of a catheter seat, and the smaller end of the middle pressing groove (502) is suitable for being pressed with the smaller end of the catheter seat.
4. The anti-pressure and anti-migration indwelling needle patch of claim 3, wherein: The two sub-adhesive patches (201) are located at the same end surface of the slow-pressure adhesive pad (5) as the larger end of the middle pressing groove (502).
5. The anti-pressure and anti-migration indwelling needle patch of claim 4, wherein: The upper surface of the sub-adhesive patch (201) is flush with the upper surface of the slow-pressure adhesive pad (5).
6. The anti-pressure and anti-migration indwelling needle patch according to any one of claims 2 to 5, characterized in that: The sub-adhesive patch (201) and the slow-pressure adhesive pad (5) are of an integral structure.
7. The anti-pressure and anti-migration indwelling needle patch according to any one of claims 1 to 6, characterized in that: The lower surface of the wide adhesive surface (102) is adhered with a first dustproof coating film (3), the first dustproof coating film (3) is provided with a clearance groove (301), and the slow-pressure adhesive pad (5) is located in the clearance groove (301).
8. The anti-pressure and anti-migration indwelling needle patch of claim 7, wherein: The main adhesive patch (101) is made of non-woven fabric, and the first dustproof coating film (3) is made of polyvinyl chloride material.
9. The anti-pressure and anti-migration indwelling needle patch according to any one of claims 1 to 6, characterized in that: The narrow adhesive surfaces (202) are double-sided adhesive surfaces, and the lower surfaces of the two narrow adhesive surfaces (202) are collectively adhered with a second dustproof coating film (4).
10. The anti-pressure and anti-migration indwelling needle patch of claim 9, wherein: The base material of the narrow adhesive surface (202) is paper, and the second dustproof coating film (4) is made of polyvinyl chloride material.