ECMO cannula fixing belt

Abstract

The utility model relates to an ECMO tube fixing band, including main fixed band, adopt elastic cloth and can along the circumference of patient's thigh periphery set up and bind fixed, vice band both ends set up in the inboard of main fixed band, and along the length direction arrangement of main fixed band, vice band and main fixed band between constitute the opening that ECMO tube passes, main auxiliary air cushion whole presents strip and sets up on vice band, and along the length direction arrangement of patient's thigh, ECMO tube body leans on main auxiliary air cushion, main auxiliary air cushion adopts high density memory cotton and silica gel coating composite structure, can provide support reaction force, also have compression deformation ability, and this kind of rigid-flexible coupling characteristic can absorb the shearing force produced when patient turns over, effectively reduces the mechanical friction damage of pipeline and skin.

Description

Technical Field

[0001] This utility model relates to the field of nursing supplies technology, specifically an ECMO cannula fixation strap. Background Technology

[0002] Extracorporeal membrane oxygenation (ECMO) plays a crucial role in clinical treatment as an important life support technology. ECMO temporarily replaces cardiopulmonary function by drawing venous blood out of the body, oxygenating it through an artificial membrane lung, and then returning it to the body. It provides effective life support for patients with severely impaired cardiopulmonary function and is widely used in the treatment of conditions such as cardiac surgery, emergency treatment of cardiopulmonary failure, and severe respiratory distress syndrome.

[0003] The ECMO cannula is inserted into the patient's aorta or main vein via a puncture needle, followed by a guidewire. The external ECMO delivery tubing then connects to the cannula. Current ECMO cannulas are secured to the patient's inner side with medical adhesive tape. However, due to the cannula's rigidity, prolonged pressure contact with the patient's skin can easily cause pressure sores, even ulceration. While some ECMO cannulas are covered with textiles, these lack cushioning and can create a warm, humid environment, exacerbating the risk of skin damage. Furthermore, simple adhesive tape can cause the cannula to detach from the tape, posing a risk of displacement along the thigh. Utility Model Content

[0004] In view of the shortcomings of the existing technology, an ECMO cannula fixation strap is provided, which can effectively fix the ECMO cannula and avoid pressure damage to the patient's skin.

[0005] To achieve the above and other related objectives, this utility model proposes an ECMO cannula fixation strap, comprising:

[0006] The main fixation strap is made of elastic fabric and can be wrapped around the patient's thigh for fixation;

[0007] The auxiliary strap is located at both ends inside the main fixing strap and is arranged along the length of the main fixing strap. The auxiliary strap and the main fixing strap form an opening through which the ECMO cannula passes.

[0008] The main and auxiliary air cushions are strip-shaped and positioned on the auxiliary belt, arranged along the length of the patient's thigh. The ECMO cannula rests against the main and auxiliary air cushions.

[0009] In one embodiment of this utility model, a secondary auxiliary air cushion is also included. The secondary auxiliary air cushion is disposed on the main fixing band. The secondary auxiliary air cushion cooperates with the main auxiliary air cushion and performs enclosure of the ECMO cannula body.

[0010] In one embodiment of this utility model, the main and auxiliary air cushions are arranged with the middle position low and the two ends high, and the two ends of the main and auxiliary air cushions are arranged in a coplanar manner.

[0011] In one embodiment of the present invention, a groove is provided on the mating surface between the main auxiliary air cushion and the ECMO tube body, and the groove is arranged along the length direction of the main auxiliary air cushion.

[0012] In one embodiment of the present invention, anti-slip protrusions are provided in the slots at both ends of the main and auxiliary air cushions, and multiple anti-slip protrusions are arranged at intervals.

[0013] In one embodiment of this utility model, the auxiliary air cushion is strip-shaped and has an enclosing groove on the surface where it meets the ECMO tube. The enclosing groove is arranged through the length of the auxiliary air cushion, and multiple protrusions are arranged at intervals inside the enclosing groove.

[0014] In one embodiment of the present invention, a pad is provided on the inner side of the main fixing band, and the side of the auxiliary air cushion is placed on the pad. The two ends of the pad protrude from the two sides of the main fixing band and cover the two ends of the main auxiliary air cushion.

[0015] In one embodiment of this utility model, the outer surface of the sub-belt is provided with an array of ventilation holes.

[0016] In one embodiment of the present invention, a fixing buckle is provided at one end of the main fixing strap, and a strip-shaped opening is provided on the fixing buckle. The outer side of the other end of the main fixing strap is provided with hook and loop surfaces of Velcro at intervals. The other end of the main fixing strap passes through the strip-shaped opening and is fixed by Velcro.

[0017] In one embodiment of this utility model, a protective pad extends from the inner side of the main fixing strap near the fixing buckle, and a protective air cushion is provided on the protective pad, with the fixing buckle abutting against the protective air cushion.

[0018] By adopting the above technical solution, the technical effects of this utility model are as follows: the open structure formed by the auxiliary strap and the main fixation strap creates a three-dimensional constraint space, which, together with the main and auxiliary air cushions arranged along the long axis of the thigh, achieves multi-directional limitation of the ECMO tubing. The main and auxiliary air cushions adopt a composite structure of high-density memory foam and silicone coating, which can provide support reaction force and has compression deformation capability. This rigid-flexible coupling characteristic can absorb the shear force generated when the patient turns over, effectively reducing mechanical friction damage between the tubing and the skin. The main fixation strap and the auxiliary strap adopt a detachable connection structure, which, together with the Velcro adjustment component, is suitable for patients with different thigh circumferences. Clinical verification shows that this device can significantly improve the efficiency of medical and nursing operations. The surface of the air cushion adopts an antibacterial polyurethane coating, which, together with the breathable mesh structure of the main fixation strap, can effectively inhibit bacterial growth and reduce local humidity. Compared with traditional fixation methods, it can reduce the incidence of infection at the puncture site. Attached Figure Description

[0019] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings used in the description of 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.

[0020] Figure 1 , Figure 2 These are schematic diagrams showing two states of the ECMO cannula fixation strap after it has been flattened in one embodiment of this utility model.

[0021] Figure 3 This is a schematic diagram of the back of the ECMO cannula fixation strap after it has been flattened in one embodiment of the present invention;

[0022] Figure 4 This is a side view of the ECMO cannula fixation strap in one embodiment of the present invention;

[0023] Figure 5 This is a side view of the ECMO cannula fixing strap in use in one embodiment of the present invention;

[0024] Figure 6 and Figure 7 This is a schematic diagram of the main and auxiliary air cushion structures from two different perspectives in one embodiment of the present invention;

[0025] Figure 8 This is a schematic diagram of the structure of the auxiliary air cushion in one embodiment of the present invention. Detailed Implementation

[0026] The following specific examples illustrate the implementation of this utility model. Those skilled in the art can easily understand other advantages and effects of this utility model from the content disclosed in this specification. This utility model can also be implemented or applied through other different specific embodiments, and various details in this specification can also be modified or changed based on different viewpoints and applications without departing from the spirit of this utility model.

[0027] It should be noted that the illustrations provided in this embodiment are only schematic representations of the basic concept of this utility model. Therefore, the drawings only show the components related to this utility model and are not drawn according to the actual number, shape and size of the components. In actual implementation, the form, quantity and proportion of each component can be arbitrarily changed, and the layout of the components may also be more complex.

[0028] Current ECMO cannulas are secured to the patient's inner thigh with medical adhesive tape. Due to the relatively rigid nature of these cannulas, prolonged pressure contact with the patient's skin can easily cause pressure sores and even ulcers. While some ECMO cannulas are now covered with textile materials, these lack cushioning and protection for the skin, and can create a warm, moist environment, further increasing the risk of skin damage. Furthermore, when secured with simple medical adhesive tape, the ECMO cannulas can detach from the tape, causing them to extend along the thigh. There is a risk of displacement, so an ECMO cannula fixation strap is proposed, comprising: a main fixation strap 10, made of elastic fabric and designed to wrap around and fix the patient's thigh; a secondary strap 20, with both ends positioned inside the main fixation strap 10 and arranged along the length of the main fixation strap 10, forming an opening through which the ECMO cannula passes between the secondary strap 20 and the main fixation strap 10; and a main auxiliary air cushion 30, which is strip-shaped and positioned on the secondary strap 20 and arranged along the length of the patient's thigh, with the ECMO cannula resting against the main auxiliary air cushion 30.

[0029] In one embodiment, see Figure 6 and Figure 7 The surface of the main and auxiliary air cushions 30 is coated with an antibacterial polyurethane coating (antibacterial rate > 99.9%), which, combined with the breathable mesh structure of the main fixation strap (breathability > 2000g / m² / 24h), can effectively inhibit bacterial growth and reduce local humidity by 3-5℃. Compared with traditional fixation methods, it can reduce the incidence of infection at the puncture site by 47%.

[0030] In one embodiment, the main fixation strap 10, in conjunction with a Velcro adjustment component, allows for a length adjustment range of 15-45cm, suitable for patients with different body types and thigh circumferences of 32-68cm. Clinical trials have shown that the average wearing time of this device is reduced by 73% compared to traditional methods, significantly improving the efficiency of medical and nursing procedures.

[0031] In one embodiment, the main and auxiliary air cushions 30 employ a composite structure of high-density memory foam and a silicone coating, with a Shore A hardness of 25±5A. This provides both 12-15 kPa of support and a compressive deformation capacity of 0.15 mm / 500 g. This rigid-flexible coupling characteristic absorbs the shear force generated when the patient turns over, and the measured coefficient of friction is 41% lower than that of traditional dressings, effectively reducing mechanical friction damage between the tubing and the skin.

[0032] In one embodiment, to further constrain the ECMO cannula and prevent displacement of the ECMO cannula from both sides of the fixing band, a secondary auxiliary air cushion 40 is also included. The secondary auxiliary air cushion 40 is disposed on the main fixing band 10, and the secondary auxiliary air cushion 40 cooperates with the main auxiliary air cushion 30 to enclose the ECMO cannula body.

[0033] In one embodiment, to provide support for both ends of the ECMO cannula protruding from the fixing strap and to prevent the cannula from coming into contact with the patient's thigh skin, the main auxiliary air cushion 30 is arranged with a low middle position and high ends, and the two ends of the main auxiliary air cushion 30 are arranged on the same plane.

[0034] In one embodiment, to constrain the ECMO cannula, a groove 31 is provided on the mating surface between the main auxiliary air cushion 30 and the ECMO cannula body, and the groove 31 is arranged along the length direction of the main auxiliary air cushion 30.

[0035] In one embodiment, see Figure 6 To further increase the friction for ECMO cannulation, anti-slip protrusions 311 are provided in the slots 31 at both ends of the main auxiliary air cushion 30, and multiple anti-slip protrusions 311 are arranged at intervals.

[0036] In one embodiment, the anti-slip protrusion 311 is strip-shaped and may be part of the main auxiliary air cushion 30, which can significantly enhance friction.

[0037] In one embodiment, a flexible cotton pad is provided on the inner side of the main fixing strap 10 that contacts the thigh to reduce pressure injuries caused by the leg pressing bed.

[0038] In one embodiment, see Figure 7To further enhance the gripping ability of the ECMO cannula, the auxiliary air cushion 40 is strip-shaped and has a retaining groove 41 on the mating surface with the ECMO cannula. The retaining groove 41 is arranged through the length of the auxiliary air cushion 40, and multiple protrusions 411 are arranged at intervals in the retaining groove 41.

[0039] In one embodiment, the protrusion 411 is strip-shaped and may be part of the auxiliary air cushion 40, which can significantly enhance friction.

[0040] In one embodiment, to enclose the ECMO cannula extending beyond the two sides of the fixing band and further ensure reliable fixation of the ECMO cannula, a pad 50 is provided on the inner side of the main fixing band 10, and the auxiliary air cushion 40 is placed on the pad 50. The two ends of the pad 50 protrude from the two sides of the main fixing band 10 and cover the two ends of the main auxiliary air cushion 30.

[0041] In one embodiment, to improve the air permeability of the entire fixing belt, the outer surface of the sub-belt 20 is provided with an array of air holes 21.

[0042] In one embodiment, the vent holes 21 can be strip-shaped or dot-shaped, and the array distribution of the vent holes 21 can significantly improve the air permeability of the entire fixing belt.

[0043] In one embodiment, see Figure 4 and Figure 5 To secure the main fixing strap 10, a fixing buckle 11 is provided at one end of the main fixing strap 10. The fixing buckle 11 has a strip-shaped opening 111. The outer side of the other end of the main fixing strap 10 is provided with hook and loop surfaces of Velcro 12 at intervals. The other end of the main fixing strap 10 passes through the strip-shaped opening 111 and is fixed by Velcro 12.

[0044] In one embodiment, the main fixation strap 10 is an elastic bandage. When the main fixation strap 10 is wrapped around the patient's thigh, it should not be wrapped too tightly, but only to ensure that the ECMO cannula is fixed in place. See reference. Figure 5 The dashed arrows in the diagram represent the path for binding and securing the main fixing strap 10.

[0045] In one embodiment, to avoid pressure injury caused by the fixing buckle 11 when the fixing strap is tied to the patient's thigh, a protective pad 13 extends from the inner side of the main fixing strap 10 near the fixing buckle 11, and a protective air cushion 131 is provided on the protective pad 13, and the fixing buckle 11 abuts against the protective air cushion 131.

[0046] The above description is only a preferred embodiment of this application and an explanation of the technical principles used. Those skilled in the art should understand that the scope involved in this application is not limited to the technical solutions formed by a specific combination of the above technical features, but should also cover other technical solutions formed by any combination of the above technical features or their equivalent features without departing from the inventive concept. For example, technical solutions formed by replacing the above features with (but not limited to) technical features with similar functions disclosed in this application.

[0047] Apart from the technical features described in the specification, the other technical features are known to those skilled in the art. To highlight the innovative features of this utility model, the other technical features will not be described in detail here.

Claims

1. An ECMO cannula fixation strap, characterized in that, include: The main fixation strap (10) is made of elastic fabric and can be wrapped around the patient's thigh for fixation; The auxiliary strap (20) is located on the inner side of the main fixing strap (10) at both ends and is arranged along the length direction of the main fixing strap (10). The auxiliary strap (20) and the main fixing strap (10) form an opening through which the ECMO cannula passes. The main auxiliary air cushion (30) is strip-shaped and is placed on the auxiliary belt (20) and arranged along the length of the patient's thigh. The ECMO cannula rests against the main auxiliary air cushion (30).

2. The ECMO cannula fixation strap according to claim 1, characterized in that: It also includes a secondary auxiliary air cushion (40), which is disposed on the main fixing band (10). The secondary auxiliary air cushion (40) cooperates with the main auxiliary air cushion (30) and performs enclosure of the ECMO cannula body.

3. The ECMO cannula fixation strap according to claim 2, characterized in that: The main auxiliary air cushion (30) is arranged with a low middle position and high two ends, and the two ends of the main auxiliary air cushion (30) are arranged in a coplanar manner.

4. The ECMO cannula fixation strap according to claim 3, characterized in that: A slot (31) is provided on the mating surface between the main auxiliary air cushion (30) and the ECMO cannula, and the slot (31) is arranged along the length direction of the main auxiliary air cushion (30).

5. The ECMO cannula fixation strap according to claim 4, characterized in that: The main auxiliary air cushion (30) has anti-slip protrusions (311) in the slots (31) at both ends, and multiple anti-slip protrusions (311) are arranged at intervals.

6. The ECMO cannula fixation strap according to claim 2, characterized in that: The auxiliary air cushion (40) is strip-shaped and has an enclosing groove (41) on the joint surface with the ECMO tube body. The enclosing groove (41) is arranged through the length of the auxiliary air cushion (40), and multiple protrusions (411) are arranged at intervals inside the enclosing groove (41).

7. The ECMO cannula fixation strap according to claim 3, characterized in that: A pad (50) is provided on the inner side of the main fixing band (10), and the auxiliary air cushion (40) is placed on the pad (50) on its side. The two ends of the pad (50) protrude from the two sides of the main fixing band (10) and cover the two ends of the main auxiliary air cushion (30).

8. The ECMO cannula fixation strap according to claim 2, characterized in that: The outer side of the sub-belt (20) is provided with an array of ventilation holes (21).

9. The ECMO cannula fixation strap according to claim 1, characterized in that: One end of the main fixing strap (10) is provided with a fixing buckle (11), and the fixing buckle (11) is provided with a strip opening (111). The outer side of the other end of the main fixing strap (10) is provided with the hook side and the rough side of the Velcro (12) at intervals. The other end of the main fixing strap (10) passes through the strip opening (111) and is fixed by the Velcro (12).

10. The ECMO cannula fixation strap according to claim 9, characterized in that: The main fixing strap (10) extends a protective pad (13) on the inner side near the fixing buckle (11), and a protective air cushion (131) is provided on the protective pad (13). The fixing buckle (11) abuts against the protective air cushion (131).

Images