Dialysis tube fixing assembly

CN224925291UActive Publication Date: 2026-11-03TONGJI HOSPITAL ATTACHED TO TONGJI MEDICAL COLLEGE HUAZHONG SCI TECH
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Patent Information

Application Number
CN202521417981.X
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2025-07-08
Publication Date
2026-11-03
Estimated Expiration
2035-07-08

AI Technical Summary

Technical Problem

Existing methods of securing dialysis catheters are prone to loosening during limb movement, posing a risk of bleeding. Furthermore, it is difficult to assess the condition of the sutures at the insertion site in a timely manner. Traditional dressings have poor absorbency and are not securely fixed, increasing the risk of catheter slippage.

Method used

A dialysis tubing fixing assembly was designed, including a visual fixing patch and a tail-end fixing bag. It adopts a split structure of a thin film visual layer, an absorbent layer, and an adhesive fixing layer, which are used to fix the insertion end and the tail end of the dialysis tubing, respectively. The annular structure of the absorbent layer absorbs the exudate, the thin film visual layer serves as an observation window, and the tail-end fixing bag achieves reliable fixation through a dedicated storage cavity and an adhesive surface.

Benefits of technology

It achieves stable fixation of the dialysis catheter, reduces the risk of catheter slippage, facilitates visual observation and timely replacement of the catheter insertion end, improves the fit and absorption effect of the fixation patch, and reduces the risk of bleeding and loosening.

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Abstract

The utility model provides a kind of dialysis tube fixing assembly, comprising: visual fixing patch and tail end fixed bag, visual fixing patch includes film visual layer, absorption exudation layer and pasting fixed layer, absorption exudation layer is annular structure, absorption exudation layer and pasting fixed layer are fixed in the same side of film visual layer, pasting fixed layer is arranged around the periphery of absorption exudation layer, the shape of the outer edge of pasting fixed layer is compatible with the shape of the outer edge of film visual layer, tail end fixed bag has the receiving cavity of receiving tail end, one side of tail end fixed bag is provided with sticking surface. Visual fixing patch is used to fix pipe end, and tail end fixed bag is used to fix the tail end of dialysis tube. The application realizes the differentiated fixing needs of pipe end and tail end through split type structure design, reduces the risk of pipeline slip, and facilitates the timely replacement of visual fixing patch for pipe end.
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Description

Technical Field

[0001] This utility model belongs to the field of medical technology, specifically relating to a dialysis tube fixing component. Background Technology

[0002] In clinical practice, dialysis catheters are inserted into the femoral vein for artificial liver treatment. While the insertion site is sutured, bleeding can occur due to limb movement, requiring timely dressing changes. Sometimes the sutures may loosen, posing a risk of catheter slippage, which could be life-threatening. Existing dressings have poor absorbency and are not visible at the insertion site, making it difficult to assess the integrity of the sutures. The distal end of the dialysis catheter is wrapped with sterile gauze and secured to the thigh skin with adhesive tape. This gauze can also loosen with limb movement or skin moisture, resulting in insecure fixation and increasing the risk of catheter slippage.

[0003] Therefore, how to provide a dialysis tube fixing assembly for separately fixing the insertion point and the end of the dialysis tube to reduce the risk of tube slippage is a technical problem that urgently needs to be solved by those skilled in the art. Utility Model Content

[0004] In view of the above-mentioned problems, the present invention aims to provide a dialysis tube fixing assembly, which solves at least one of the above-mentioned technical problems.

[0005] To solve the above-mentioned technical problems, this utility model provides a dialysis tube fixing assembly, including a visual fixing patch and a tail-end fixing bag. The visual fixing patch includes a thin film visible layer, an absorbent layer, and an adhesive fixing layer. The absorbent layer has a ring-shaped structure. The absorbent layer and the adhesive fixing layer are both fixed to the same side of the thin film visible layer. The adhesive fixing layer is arranged around the periphery of the absorbent layer. The outer edge shape of the adhesive fixing layer is adapted to the outer edge shape of the thin film visible layer. The tail-end fixing bag has a storage cavity for storing the tail end of the dialysis tube, and one side of the tail-end fixing bag is provided with an adhesive surface.

[0006] Preferably, the tail-end fixing bag includes: The device comprises an upper fixing component and a lower storage bag. The lower storage bag has a storage cavity inside and an opening at the top that communicates with the storage cavity. The upper fixing component is provided with a pair of limiting components. The bottom end of the upper fixing component is fixedly connected to the top side edge of the lower storage bag. The opening and the limiting components are located on the same side of the tail fixing bag. The upper fixing component and the side of the lower storage bag away from the opening are provided with adhesive surfaces.

[0007] Preferably, the upper fixing member is provided with a pair of limiting grooves, the limiting grooves are connected to the opening, and one limiting groove is provided with one limiting member.

[0008] Preferably, the limiting member includes a fixing strap with a hook and loop surface and a hook and loop hook surface fixedly disposed on the upper fixing member. The hook and loop surface of the fixing strap and the hook and loop hook surface of the upper fixing member are detachably and tightly fitted. The fixing strap and the hook and loop hook surface are distributed on both sides of a corresponding limiting groove.

[0009] Preferably, the visible thin film layer has an elliptical structure.

[0010] Preferably, a release layer is provided on the outer surface of the adhesive surface and on the outer surface of the adhesive fixing layer.

[0011] Preferably, the absorbent layer is an alginate dressing.

[0012] Preferably, the total height of the upper fixing member and the lower storage bag is 7cm-10cm.

[0013] Beneficial effects: This utility model provides a dialysis catheter fixation assembly for separately fixing the insertion end and the external end of a dialysis catheter inserted into the patient's body. The dialysis catheter fixation assembly includes a visual fixation patch and an external end fixation bag. The visual fixation patch includes a thin film visible layer, an absorbent layer, and an adhesive fixation layer. The absorbent layer has a ring-shaped structure. Both the absorbent layer and the adhesive fixation layer are fixed to the same side of the thin film visible layer. The adhesive fixation layer is arranged around the periphery of the absorbent layer, and the outer edge shape of the adhesive fixation layer is adapted to the outer edge shape of the thin film visible layer. The external end fixation bag has a storage cavity for storing the external end, and one side of the external end fixation bag is provided with an adhesive surface. The visual fixation patch is used to fix the insertion end, and the external end fixation bag is used to fix the external end of the dialysis catheter. The visual fixation dressing uses a thin film as an observation window, allowing medical staff to directly observe the suture condition at the insertion site without removing the dressing. A ring-shaped absorbent layer surrounds the insertion site, forming a ring-like absorption band that can specifically absorb wound exudate without obstructing the view. The wraparound layout, where the adhesive fixation layer and the outer edge of the visual layer adapt, ensures a tight fit between the dressing and the skin while preventing the absorbent layer from being obstructed and affecting its function. The thin film visual layer covers both the absorbent and adhesive fixation layers, preventing the exudate absorbed by the absorbent layer from overflowing. The tail-end fixation bag uses a dedicated storage cavity to wrap and fix the end of the tube, and the side adhesive surface ensures reliable adhesion to the limb skin, replacing the loose fixation method of traditional gauze wrapping. This application uses a split structural design to meet the differentiated fixation needs of the insertion end and the tail end, reducing the risk of tube slippage and facilitating timely replacement of the visual fixation dressing at the insertion end.

[0014] The above description is merely an overview of the technical solution of this utility model. In order to better understand the technical means of this utility model and to implement it in accordance with the contents of the specification, and to make the above and other objects, features and advantages of this utility model more obvious and understandable, specific embodiments of this utility model are given below. Attached Figure Description

[0015] To more clearly illustrate the technical solutions in the embodiments of this specification or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0016] Figure 1 This is a schematic diagram of the structure of the visual fixing sticker provided in an embodiment of the present utility model; Figure 2 A cross-sectional view of the visual fixing sticker provided in the embodiment of this utility model; Figure 3 This is a schematic diagram of the tail-end fixing bag provided in an embodiment of the present utility model.

[0017] Figure label: 1. Visual fixed sticker; 11. Thin film visible layer; 12. Absorbing permeate layer; 13. Apply the fixing layer; 2. Tail end securing bag; 21. Upper-level fasteners; 211. Limiting components; 2111. Fixing strap; 2112. Hook and loop fastener side; 212. Limiting groove; 22. Lower storage bag; 221. Opening; 23. Sticky dough. Detailed Implementation

[0018] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0019] Example 1 Please see Figure 1-3This embodiment provides a dialysis catheter fixation assembly for fixing the insertion end and the tail end of a dialysis catheter inserted into a patient's body. The dialysis catheter fixation assembly includes a visual fixation patch 1 and a tail end fixation bag 2. The visual fixation patch 1 includes a thin film visible layer 11, an absorbent layer 12, and an adhesive fixation layer 13. The absorbent layer 12 has a ring-shaped structure. The absorbent layer 12 and the adhesive fixation layer 13 are both fixed to the same side of the thin film visible layer 11. The adhesive fixation layer 13 is arranged around the periphery of the absorbent layer 12. The outer edge shape of the adhesive fixation layer 13 is adapted to the outer edge shape of the thin film visible layer 11. The tail end fixation bag 2 has a storage cavity for storing the tail end. One side of the tail end fixation bag 2 is provided with an adhesive surface 23.

[0020] This utility model provides a dialysis catheter fixation assembly for separately fixing the insertion end and the external end of a dialysis catheter inserted into the patient's body. The dialysis catheter fixation assembly includes: a visual fixation patch 1 and an external fixation bag 2. The visual fixation patch 1 includes a thin film visible layer 11, an absorbent layer 12, and an adhesive fixation layer 13. The absorbent layer 12 has a ring-shaped structure. Both the absorbent layer 12 and the adhesive fixation layer 13 are fixed to the same side of the thin film visible layer 11. The adhesive fixation layer 13 is arranged around the periphery of the absorbent layer 12, and the outer edge shape of the adhesive fixation layer 13 is adapted to the outer edge shape of the thin film visible layer 11. The external fixation bag 2 has a storage cavity for storing the external end, and an adhesive surface 23 is provided on one side of the external fixation bag 2. The visual fixation patch 1 is used to fix the insertion end, and the external fixation bag 2 is used to fix the external end of the dialysis catheter. The visual fixation patch 1 uses a thin film visual layer 11 as an observation window, allowing medical staff to directly observe the suture status at the insertion site without removing the dressing. The annular absorbent layer 12 forms a ring-shaped absorbent band around the insertion site, specifically absorbing wound exudate without obstructing the view. The adhesive fixation layer 13, with its wraparound layout adapted to the outer edge of the visual layer, ensures a tight fit between the patch and the skin while avoiding obstructing the absorbent layer's function. The thin film visual layer 11 covers both the absorbent layer 12 and the adhesive fixation layer 13, preventing the absorbed exudate from overflowing. The tail-end fixation bag 2 uses a dedicated storage cavity to wrap and fix the end of the tube, and, in conjunction with the side adhesive surface 23, achieves reliable adhesion to the limb skin, replacing the loose fixation method of traditional gauze wrapping. This application achieves differentiated fixation needs for the insertion end and the tail end through a split structural design, reducing the risk of tube slippage and facilitating timely replacement of the visual fixation patch 1 at the insertion end.

[0021] In some possible implementations, the tail-end fixing bag 2 includes: an upper fixing member 21 and a lower storage bag 22. The lower storage bag 22 has a storage cavity inside. The top of the lower storage bag 22 has an opening 221 that communicates with the storage cavity. The upper fixing member 21 is provided with a pair of limiting members 211. The bottom end of the upper fixing member 21 is fixedly connected to the top side edge of the lower storage bag 22. The opening 221 and the limiting members 211 are located on the same side of the tail-end fixing bag 2. The side of the upper fixing member 21 and the lower storage bag 22 away from the opening 221 is provided with an adhesive surface 23.

[0022] Specifically, the lower storage bag 22 has a storage cavity for centrally accommodating the end of the dialysis tubing, preventing the tubing from becoming tangled. The upper fixing member 21 is fixedly connected to the top edge of the lower storage bag 22, forming a stable overall structure to prevent the storage bag from deforming under stress and affecting the fixation effect. The upper fixing member 21 has a pair of limiting members 211 that can separately limit and fix the arterial and venous tubing of the dialysis tubing, reducing the risk of tubing slippage due to limb movement. The opening 221 and the limiting member 211 are located on the same side, so that the end of the tubing can be directly fixed by the limiting member 211 after entering the storage cavity through the opening 221, simplifying the operation process and improving fixation efficiency. An adhesive surface 23 is provided on the side of the upper fixing member 21 and the lower storage bag 22 away from the opening 221 to enhance the fit between the fixation bag and the patient's skin and prevent loosening due to insufficient adhesion on one side. The adhesive surface 23 can be made of a breathable dressing with adhesive properties.

[0023] In some possible implementations, the upper fixing member 21 is provided with a pair of limiting grooves 212, which are connected to the opening 221, and one limiting groove 212 is correspondingly provided with one limiting member 211.

[0024] Specifically, by setting a limiting groove 212 that communicates with the opening 221 in the upper fixing component 21, the end of the pipe can be directly embedded in the limiting groove 212 when it enters the receiving cavity through the opening 221, forming a physical limit and preventing lateral displacement. The design of each limiting groove 212 corresponding to a limiting component 211 ensures that the fixing strap 2111 can specifically cover the corresponding limiting groove 212 area, preventing fixing failure caused by misalignment of the fixing strap 2111, and forming a double constraint through the spatial cooperation between the groove and the limiting component 211. The communication structure between the limiting groove 212 and the opening 221 allows the end of the pipe to naturally fall into the receiving cavity after passing through the limiting groove 212 without additional position adjustment, improving operational efficiency and effectively suppressing longitudinal slippage and lateral swaying of the pipe caused by external forces.

[0025] In some possible implementations, the limiting member 211 includes a fixing strap 2111 with a hook and loop surface and a hook and loop hook surface 2112 fixedly disposed on the upper fixing member 21. The hook and loop surface of the fixing strap 2111 and the hook and loop hook surface 2112 of the upper fixing member 21 are detachably and tightly fitted. The fixing strap 2111 and the hook and loop hook surface 2112 are distributed on both sides of a corresponding limiting groove 212.

[0026] Specifically, the detachable hook and loop design of the Velcro allows the fixation strap 2111 to be flexibly adjusted in tightness according to actual needs, adapting to different patients' skin conditions or limb range of motion and enhancing fixation stability. The fixation strap 2111 and the hook and loop sides 2112 are distributed on both sides of the limiting groove 212, ensuring that the fixation strap 2111 always maintains a corresponding relationship with the limiting groove 212 during adjustment, preventing the tube end from detaching from the storage cavity due to positional misalignment. The detachable nature of the Velcro also facilitates quick operation by medical staff, allowing for dressing changes or tube examinations without damaging the overall structure, reducing skin irritation from repeated application.

[0027] In some possible implementations, the visible film layer 11 has an elliptical structure. By designing the visible film layer 11 as an elliptical structure, the risk of fixation failure due to edge lifting can be reduced. Compared to conventional rectangular or circular structures, the elliptical shape has better extensibility in the longitudinal direction, which can cover the seepage area without affecting limb movement. Its geometric characteristics are beneficial to maintaining the structural stability of the seepage-absorbing layer 12 and the adhesive fixation layer 13.

[0028] In some possible implementations, a release layer is provided on the outside of the adhesive surface 23 and the outside of the adhesive fixing layer 13 to achieve physical isolation and protection of the adhesive surface, avoid direct contact between the adhesive material and the external environment, and prevent the loss of adhesion caused by dust, microbial contamination or accidental adhesion. In some possible implementations, the exudate-absorbing layer 12 can be an alginate dressing. Utilizing its unique highly absorbent gel-forming properties, it creates a moist gel environment upon contact with exudate, efficiently absorbing wound exudate while maintaining a suitable moisture balance. This material selection overcomes the limitations of traditional dressings in terms of limited absorption capacity and the tendency to form scabs. Simultaneously, the gel state maintains the transparency of the film's visible layer 11, facilitating continuous observation of the suture status at the catheter insertion site. The biocompatibility of alginate also reduces the risk of allergic reactions, and its natural hemostatic properties synergistically control bleeding, forming a multi-layered protective mechanism.

[0029] In some possible implementations, in order to balance the practicality of the fixation device with human comfort, the total height of the upper fixation member 21 and the lower storage bag 22 can be set to 7cm-10cm. This ensures that the storage cavity fully covers and limits the end of the tube, preventing the tube from being exposed due to insufficient height or the fixation strap 2111 from compressing the tube. At the same time, it avoids the device from becoming bulky due to excessive total height, which would affect the patient's limb movement or increase the skin contact area, making the adhesive surface 23 easy to loosen.

[0030] Finally, it should be noted that the above embodiments are merely specific implementations of this utility model, used to illustrate the technical solution of this utility model, and not to limit it. The protection scope of this utility model is not limited thereto. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that any person skilled in the art can still modify or easily conceive of changes to the technical solutions described in the foregoing embodiments, or make equivalent substitutions for some of the technical features, within the technical scope disclosed in this utility model; and these modifications, changes, or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this utility model. All should be covered within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the protection scope of the claims.

[0031] Although the embodiments of this utility model have been disclosed above, they are not limited to the applications listed in the specification and embodiments. They can be applied to various fields suitable for this utility model. For those skilled in the art, other modifications can be easily made. Therefore, without departing from the general concept defined by the claims and their equivalents, this utility model is not limited to the specific details and the illustrations shown and described herein.

Claims

1. A dialysis tube fixing assembly, characterized in that, The dialysis tubing fixation assembly includes: The device includes a visual fixing patch and a tail-end fixing bag. The visual fixing patch comprises a thin film visible layer, an absorbent layer, and an adhesive fixing layer. The absorbent layer has a ring-shaped structure. Both the absorbent layer and the adhesive fixing layer are fixed to the same side of the thin film visible layer. The adhesive fixing layer is arranged around the periphery of the absorbent layer, and the outer edge shape of the adhesive fixing layer is adapted to the outer edge shape of the thin film visible layer. The tail-end fixing bag has a storage cavity for storing the tail end of the dialysis tube, and one side of the tail-end fixing bag is provided with an adhesive surface.

2. The dialysis tube fixation assembly as described in claim 1, characterized in that, The tail-end fixing bag includes: The device comprises an upper fixing component and a lower storage bag. The lower storage bag has a storage cavity inside and an opening at the top that communicates with the storage cavity. The upper fixing component is provided with a pair of limiting components. The bottom end of the upper fixing component is fixedly connected to the top side edge of the lower storage bag. The opening and the limiting components are located on the same side of the tail fixing bag. The upper fixing component and the side of the lower storage bag away from the opening are provided with adhesive surfaces.

3. The dialysis tube fixation assembly as described in claim 2, characterized in that, The upper fixing component is provided with a pair of limiting grooves, which are connected to the opening, and one limiting groove is provided with one limiting component.

4. The dialysis tube fixation assembly as described in claim 3, characterized in that, The limiting member includes a fixing strap with a hook and loop surface and a hook and loop hook surface fixedly disposed on the upper fixing member. The hook and loop surface of the fixing strap and the hook and loop hook surface of the upper fixing member are detachably and tightly fitted. The fixing strap and the hook and loop hook surface are distributed on both sides of a corresponding limiting groove.

5. The dialysis tube fixation assembly as described in claim 1, characterized in that, The visible thin film layer has an elliptical structure.

6. The dialysis tube fixation assembly as described in claim 2, characterized in that, A release layer is provided on the outer surface of the adhesive surface and the outer surface of the adhesive fixing layer.

7. The dialysis tube fixation assembly as described in claim 1, characterized in that, The absorbent layer is an alginate dressing.

8. The dialysis tube fixation assembly as described in claim 2, characterized in that, The total height of the upper fixing component and the lower storage bag is 7cm-10cm.