An intratumoral medical intervention catheter fixing device

Abstract

The application relates to the technical field of medical devices, in particular to an oncology department interventional treatment catheter fixing device, which comprises a plaster body, the plaster body is pasted on the skin on one side of a catheter sheath, and provides support for a catheter body and a fixing assembly; the catheter body is arranged at the top of the plaster body, and the fixing assembly is arranged at the top of the plaster body; the application can set bidirectional cams, limiting columns, positioning stickers and other components, the rotation cooperation relationship between the bidirectional cams and the limiting columns enables the bidirectional cams to dynamically compress and adjust the catheter body through the symmetrically arranged cam block structures, and then the device can realize the effect of stepless adjustment of the tightness of catheter fixing by manually rotating the cam. The structure realizes linear contact between the cam block and the surface of the catheter, effectively disperses local pressure while ensuring fixing strength, combines the initial positioning function of the positioning sticker, and solves the technical problems that traditional adhesive tape fixing is prone to loosening or excessive compression.

Description

Technical Field

[0001] This application relates to the field of medical device technology, and in particular to a catheter fixation device for interventional oncology treatment. Background Technology

[0002] In most clinical cases, adhesive tape is used to directly fix the catheter. However, the adhesive tape's adhesion is easily reduced by the patient's sweat and sebum secretion, causing the catheter to loosen and shift. This not only affects the treatment effect but may also lead to a series of complications, such as vascular perforation and infection spread. Furthermore, adhesive tape has poor breathability; prolonged contact with the skin can cause local heat and moisture, increasing the risk of skin allergies, redness, and even breakage, severely impacting patient comfort and treatment experience.

[0003] A search revealed that Chinese Patent CN217745320U discloses a catheter fixation device for interventional oncology treatment, including a fixation base and a catheter insertion hole located at the center of the fixation base. Fixing blocks are provided on both sides of the catheter insertion hole, and the inner wall of the fixing blocks is provided with a moving groove. The inner wall of the moving groove is provided with a clamping mechanism that can clamp and fix the catheter. When the above-mentioned catheter fixation device for interventional oncology treatment is used, after the catheter is inserted through the catheter insertion hole, the clamping mechanism clamps and fixes the outside of the catheter, which can, to a certain extent, prevent the catheter from shaking in the catheter insertion hole during treatment.

[0004] However, the existing technology still has the following shortcomings in clinical application: First, the stability of catheter fixation is not good. The combination of the existing clamping post and clamping hole has a limited adjustment range, making it difficult to match the skin curvature of patients of different body types, especially for obese or thin patients with insufficient fixation stability; In addition, the rigid clamping mechanism in the moving groove applies single-point concentrated pressure to the catheter, which can easily lead to local deformation or even rupture of the catheter, posing a risk of catheter damage. Utility Model Content

[0005] In order to solve the problems mentioned in the background art, this application provides a catheter fixation device for interventional oncology treatment.

[0006] This application provides a catheter fixation device for interventional oncology treatment, which adopts the following technical solution: A catheter fixation device for interventional oncology treatment includes a dressing body, which is adhered to the skin on one side of the catheter sheath to provide support for the catheter body and the fixation component; the catheter body is disposed on the top of the dressing body, and the fixation component is disposed on the top of the dressing body.

[0007] The fixing assembly includes a first locking block, a first support plate, a protective film, a positioning plate, a second support plate, a second locking block, and a locking plate. The first locking blocks are symmetrically arranged around the dressing body. A first support plate is fixedly locked to one side of the first locking block. The first support plate is fixedly installed on the top of the catheter body. A protective film is fixedly connected to the contact surface between the first support plate and the catheter body. A positioning plate is fixedly connected to one side of the first support plate. A second support plate is fixedly connected to the side of the positioning plate away from the first support plate. A second locking block is fixedly locked to one side of the second support plate. The second locking block is fixedly installed on the top of the dressing body. The locking plates are fixedly connected to the left and right sides of the first and second support plates.

[0008] Through the above solution, the fixation component works in concert with multiple parts to ensure the catheter body is firmly fixed on the dressing body, reducing the risk of catheter displacement and detachment.

[0009] Optionally, the fixing component further includes a positioning sticker, a limiting post, and a bidirectional cam. The positioning sticker is fixedly connected to the top of the application body, and the top of each positioning sticker is fixedly connected to a limiting post. A bidirectional cam is movably sleeved on one side of each limiting post.

[0010] The above-mentioned design enhances the fixation of the catheter body by using positioning pads and limiting posts, while the bidirectional cam provides additional pressure to ensure the stability of the catheter body.

[0011] Optionally, the dressing body is composed of a soft adhesive layer at the bottom and a rigid breathable plate at the top, and the catheter body is disposed between the bidirectional cams, with the catheter body tightly fitted to the bidirectional cams.

[0012] Through the above scheme, the soft adhesive layer of the dressing body ensures a close fit with the skin, while the rigid breathable plate provides sufficient support, and the bidirectional cam further enhances the fixation effect of the catheter body.

[0013] Optionally, both the first support plate and the second support plate are made of arched support plates, and the top of the arched support plate is elastic.

[0014] Through the above scheme, the elastic design of the arched support plate can effectively buffer external pressure, reduce the impact on the duct body, and improve the durability of the fixing device.

[0015] Optionally, the card plates are all movably engaged inside the first card block and the second card block, and the included angle between the card plate and the application body is 30°.

[0016] The above solution allows the movable snap-fit ​​design of the clamp to be flexibly adjusted to adapt to different sizes and shapes of the catheter body, while the 30° angle ensures the stability of the clamp.

[0017] Optionally, the protective film is made of soft silicone, and the protective film always fits the catheter body.

[0018] The above solution effectively protects the catheter body from friction and pressure, extending the catheter's service life.

[0019] Optionally, the bidirectional cam is symmetrically arranged with respect to the catheter body, and the protrusions of the bidirectional cam press against the catheter body when they rotate.

[0020] The above-mentioned scheme, with its symmetrical arrangement of bidirectional cams and protrusion design, can apply pressure evenly, ensuring the stability of the catheter body in the fixing device and reducing the risk of catheter displacement and detachment.

[0021] In summary, this application includes the following beneficial technical effects: 1. This utility model utilizes the rotational engagement between the bidirectional cam and the limiting post to enable the bidirectional cam to dynamically adjust the pressure on the catheter body through a symmetrically arranged protrusion structure. This allows the device to achieve stepless adjustment of the catheter fixation tightness by manually rotating the cam. Furthermore, the structure, through the line contact between the cam protrusion and the catheter surface, effectively disperses local pressure while ensuring fixation strength. Combined with the initial positioning function of the positioning patch, it solves the technical problems of easy loosening or excessive pressure of traditional adhesive tape fixation, significantly improving the stability of catheter fixation and patient comfort.

[0022] 2. This utility model utilizes the overlapping relationship between the elastic support plate and the protective soft sheet, enabling the arched support plate to adaptively support the catheter body through its own elastic deformation. Combined with the 30° movable connection structure of the clamping plate and the clamping block, this device can achieve the effect of multi-angle stable fixation of the catheter through the combined effect of elastic buffering and mechanical limiting. Furthermore, this design reduces the risk of catheter wear through the flexible fit of the silicone soft sheet, and compensates for the stress caused by changes in patient position by utilizing the limited rotational freedom of the movable clamping plate, effectively improving the applicability and reliability of the device in complex clinical environments. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the overall structure of the device in the embodiments of this application; Figure 2 This is a schematic diagram of a partial structure of the device in an embodiment of this application; Figure 3 This is a partial structural diagram of the fixed component in an embodiment of this application; Figure 4 This is a schematic diagram of the partial structure installation of the fixed component in an embodiment of this application.

[0024] Reference numerals: 1. Adhesive body; 2. Adhesive tube body; 3. Fixing component; 301. First locking block; 302. First support plate; 303. Protective film; 304. Positioning plate; 305. Second support plate; 306. Second locking block; 307. Locking plate; 308. Positioning sticker; 309. Limiting post; 310. Bidirectional cam. Detailed Implementation

[0025] The following is in conjunction with the appendix Figure 1-4 This application will be described in further detail.

[0026] This application discloses a catheter fixation device for interventional oncology treatment.

[0027] Please see Figure 1 A catheter fixation device for interventional oncology includes a dressing body 1, which is adhered to the skin on one side of the catheter sheath to provide support for the catheter body 2 and the fixation component 3; the catheter body 2 is disposed on the top of the dressing body 1, and the fixation component 3 is disposed on the top of the dressing body 1.

[0028] Please see Figures 2 to 4 The fixing component 3 includes a first locking block 301, a first support plate 302, a protective film 303, a positioning plate 304, a second support plate 305, a second locking block 306, and a locking plate 307. The first locking block 301 is symmetrically arranged around the dressing body 1. The first support plate 302 is fixedly locked to one side of the first locking block 301. The first support plate 302 is fixedly installed on the top of the catheter body 2. The protective film 303 is fixedly connected to the contact surface between the first support plate 302 and the catheter body 2. The positioning plate 304 is fixedly connected to one side of the first support plate 302. The second support plate 305 is fixedly connected to the side of the positioning plate 304 away from the first support plate 302. The second locking block 306 is fixedly locked to one side of the second support plate 305. The second locking block 306 is fixedly installed on the top of the dressing body 1. The locking plates 307 are fixedly connected to the left and right sides of the first support plate 302 and the second support plate 305.

[0029] The fixing component 3 also includes a positioning sticker 308, a limiting post 309, and a bidirectional cam 310. The positioning sticker 308 is fixedly connected to the top of the application body 1. The top of the positioning sticker 308 is fixedly connected to the limiting post 309. The bidirectional cam 310 is movably sleeved on one side of the limiting post 309.

[0030] The dressing body 1 consists of a soft adhesive layer at the bottom and a rigid breathable plate at the top. The catheter body 2 is disposed between the bidirectional cams 310, and the catheter body 2 is in close contact with the bidirectional cams 310.

[0031] Both the first support plate 302 and the second support plate 305 are made of arched support plates, and the top of the arched support plates is elastic.

[0032] The card plates 307 are all movably engaged inside the first card block 301 and the second card block 306, and the included angle between the card plates 307 and the application body 1 is 30°.

[0033] The protective film 303 is made of soft silicone and always fits the catheter body 2.

[0034] The bidirectional cam 310 is symmetrically arranged around the catheter body 2, and the protrusion of the bidirectional cam 310 presses against the catheter body 2 when it rotates.

[0035] Further explanation is needed: The fixing component 3 achieves dynamic fixation and adjustment of the catheter through the cooperation of the bidirectional cam 310 and the limiting post 309. The component has a symmetrically arranged bidirectional cam 310 structure, and its protrusion can rotate around the limiting post 309. By manually rotating the cam, the contact area and pressure between the protrusion and the catheter body 2 can be changed. When the cam protrusion rotates to the catheter surface, it applies pressure evenly through line contact, which ensures the fixation strength and avoids excessive local pressure. Combined with the initial positioning function of the positioning patch 308, medical staff can quickly adjust the tightness according to the patient's body shape and catheter diameter to achieve stepless adjustment. This design breaks through the static restraint mode of traditional fixation devices, allowing the catheter to move slightly within a certain range with the patient's movement, significantly reducing the risk of catheter displacement caused by changes in body position. At the same time, the cam mechanical structure ensures the stability of the position after adjustment, solving the technical problems of easy loosening or excessive pressure of traditional adhesive tape fixation.

[0036] The fixation component 3 achieves multi-dimensional stable fixation of the catheter through an elastic support system and a movable snap-fit ​​structure. The composite support layer, composed of elastic arched support plates 302 / 305 and silicone protective film 303, can adaptively deform according to the shape of the catheter and the undulations of the body surface, providing flexible buffer protection. The support plates adopt an arched structure design, which allows a certain degree of elastic deformation while ensuring support strength, effectively dispersing the pressure of the catheter on the skin. With the 30° movable connection structure of the snap-fit ​​plate 307 and snap-fit ​​blocks 301 / 306, the entire fixation component 3 has limited rotational freedom, which can both limit excessive displacement of the catheter and compensate for stress changes caused by patient movement. In addition, the silicone protective film 303 always fits against the catheter surface, reducing direct friction between rigid components and the catheter and reducing the risk of catheter damage. This composite support system, through the synergistic effect of mechanical limiting and elastic buffering, significantly improves the applicability and reliability of the device in complex clinical environments, ensuring the stability and safety of the catheter during long-term indwelling.

[0037] The implementation principle of a catheter fixation device for interventional oncology in this application is as follows: First, the dressing body 1 is fixed to the patient's skin by a soft adhesive layer. The rigid breathable plate on top provides stable support for the catheter body 2 and the fixation component 3. The positioning patch 308 is pre-attached to the skin surface. The limiting post 309 provides a rotation fulcrum for the bidirectional cam 310, ensuring that the initial position of the adjustment mechanism is accurately aligned with the catheter direction.

[0038] Secondly, medical staff manually rotate the symmetrically arranged bidirectional cam 310, whose protrusion structure rotates around the limiting post 309, gradually pressing the catheter body 2. The line contact between the protrusion and the catheter surface can evenly distribute the pressure. The tightness can be steplessly controlled by the rotation angle, which can avoid excessive pressure that could damage the catheter and ensure the catheter fixation strength.

[0039] Next, the elastic arched support plate 302 / 305 provides adaptive support at the bottom of the catheter. Its elastic deformation capability can adjust the contact area according to the undulation of the body surface or the displacement of the catheter. Combined with the flexible fit of the silicone protective film 303, it reduces the direct friction between the rigid components and the catheter, while buffering external impacts and reducing the risk of catheter wear.

[0040] Next, the 30° movable connection structure between the plate 307 and the blocks 301 / 306 allows the fixation component 3 to rotate within a limited range. While limiting excessive displacement of the catheter, it compensates for the stress caused by changes in the patient's position. This mechanical limiting design ensures the stability of the catheter and avoids local stress concentration caused by the patient's movement.

[0041] Finally, the entire device achieves dynamic fixation of the catheter through the mechanical locking of the bidirectional cam 310, the deformation buffering of the elastic support plate, and the degree of freedom compensation of the movable snap-fit. The combination of the rigid breathable plate and the soft adhesive layer ensures skin breathability and reduces the risk of infection. The synergistic effect of the components ensures that the catheter remains stable during long-term indwelling and adapts to the needs of the patient's daily activities.

[0042] The above are all preferred embodiments of this application and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. An intratumoral interventional catheter fixation device comprising an applicator body (1), characterized in that: The dressing body (1) is adhered to the skin on one side of the catheter sheath, providing support for the catheter body (2) and the fixation component (3); the catheter body (2) is located on top of the dressing body (1), and the fixation component (3) is located on top of the dressing body (1); The fixing component (3) includes a first locking block (301), a first support plate (302), a protective film (303), a positioning plate (304), a second support plate (305), a second locking block (306), and a locking plate (307). The first locking block (301) is symmetrically arranged around the dressing body (1). The first support plate (302) is fixedly locked to one side of the first locking block (301). The first support plate (302) is fixedly installed on the top of the catheter body (2). The first support plate (302) and the catheter body (2) are... A protective film (303) is fixedly connected to the contact surface. A positioning plate (304) is fixedly connected to one side of the first support plate (302). A second support plate (305) is fixedly connected to the side of the positioning plate (304) away from the first support plate (302). A second locking block (306) is fixedly snapped onto one side of the second support plate (305). The second locking block (306) is fixedly installed on the top of the application body (1). The locking plates (307) are all fixedly connected to the left and right sides of the first support plate (302) and the second support plate (305).

2. The intratumoral interventional treatment catheter fixation device of claim 1, wherein: The fixing component (3) also includes a positioning sticker (308), a limiting post (309) and a bidirectional cam (310). The positioning sticker (308) is fixedly connected to the top of the application body (1). The top of the positioning sticker (308) is fixedly connected to the limiting post (309). The bidirectional cam (310) is movably sleeved on one side of the limiting post (309).

3. The intratumoral interventional treatment catheter fixation device of claim 2, wherein: The dressing body (1) is composed of a soft adhesive layer at the bottom and a hard breathable plate at the top. The catheter body (2) is disposed between the bidirectional cams (310), and the catheter body (2) is in close contact with the bidirectional cams (310).

4. The intratumoral interventional treatment catheter fixation device of claim 2, wherein: Both the first support plate (302) and the second support plate (305) are made of arched support plates, and the top of the arched support plate is elastic.

5. The intratumoral interventional treatment catheter fixation device of claim 1, wherein: The card plates (307) are all movably engaged inside the first card block (301) and the second card block (306), and the angle between the card plates (307) and the application body (1) is 30°.

6. The intratumoral interventional treatment catheter fixation device of claim 1, wherein: The protective film (303) is made of soft silicone and is always in contact with the catheter body (2).

7. The intratumoral interventional treatment catheter fixation device of claim 2, wherein: The bidirectional cam (310) is symmetrically arranged with the catheter body (2) as the center, and the protrusion of the bidirectional cam (310) presses against the catheter body (2) when it rotates.

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