ECMO pipeline anti-slip fixing clamp based on cambered surface fitting

Abstract

The invention relates to the technical field of medical auxiliary instruments, in particular to an ECMO pipeline anti-slip fixing clamp based on cambered surface attachment, a knee protection binding sleeve, an ankle protection binding sleeve and a pipeline fixing assembly, the knee protection binding sleeve, the ankle protection binding sleeve and the pipeline fixing assembly are connected through an elastic connecting assembly, and according to the ECMO pipeline anti-slip fixing clamp based on cambered surface attachment, the ECMO pipeline anti-slip fixing clamp based on cambered surface attachment is provided with the knee protection binding sleeve, the ankle protection binding sleeve and the pipeline fixing assembly. By means of the medical sponge liner with the thickness of 5-8 mm in the knee pad binding sleeve, the skin-friendly breathable design of the inner-layer medical-grade pure cotton knitted fabric and the medical silica gel covered edges on the edges of the ankle protection binding sleeve placing holes and the through holes, damage to the skin barrier of the lower limbs of a patient due to repeated tearing of fixing materials is avoided, and meanwhile friction compression of the fabric and the binding band to the skin and bones is avoided; the arc-shaped edge of the knee protection binding sleeve is matched with the ankle joint outline of the ankle protection binding sleeve, the knee protection binding sleeve can be attached to the limb curve, the probability of occurrence of skin complications such as contact dermatitis and skin ulceration is effectively reduced, and meanwhile the operation that nursing staff frequently replace fixing materials is reduced.

Description

Technical Field

[0001] This invention relates to the field of medical auxiliary device technology, specifically to an ECMO tubing anti-slip fixing clamp based on arc surface fitting. Background Technology

[0002] Extracorporeal membrane oxygenation (ECMO) uses a blood pump to draw blood from the body, oxygenate it in an oxygenator to remove carbon dioxide, and then return the blood to the body after gas exchange. Driven by the pump, the blood can return to a vein (VV mode) or an artery (VA mode), thus partially replacing the function of the patient's lungs and heart, providing extracorporeal respiratory and circulatory support. As one of the core methods for critical care, the stability and fixation of the ECMO tubing system directly affects the safety of treatment. Currently, ECMO tubing in clinical practice, due to its large diameter and long length, needs to be attached to the patient's lower limbs.

[0003] Current fixation methods, which mainly rely on medical tape or disposable fixation patches, have several problems. First, there is a high risk of skin damage. The tape and fixation patches need to be repeatedly torn and replaced, which can easily damage the skin barrier of the patient's lower limbs. This is especially true for long-term wearers, often leading to complications such as contact dermatitis and skin breakdown, increasing the burden of nursing care. Second, the tubing is prone to displacement and slippage during lower limb joint movement. Furthermore, traditional fixation methods cannot adapt to the limb's curves, leaving gaps between the tubing and the skin. External force can easily loosen the tubing connections, leading to serious risks such as blood reflux and infection.

[0004] To address the aforementioned issues, we propose an ECMO tubing anti-slip fixing clamp based on arc-surface fitting. Summary of the Invention

[0005] The purpose of this invention is to provide an ECMO tubing anti-slip fixation clamp based on arc-shaped fitting, to solve the problems mentioned in the background art, such as the need for repeated tearing and replacement of tape and fixation patches, which easily damages the skin barrier of the patient's lower limbs, especially for long-term wearers, often causing complications such as contact dermatitis and skin ulceration, significantly increasing the nursing burden. When the lower limb joints move, traditional fixation methods cannot adapt to the limb curves, and there are gaps between the tubing and the skin, which can easily lead to tubing displacement and slippage due to external force, and even cause loosening of the tubing interface, resulting in serious medical risks such as blood reflux and infection.

[0006] To achieve the above objectives, the present invention provides the following technical solution: an ECMO tubing anti-slip fixation clamp based on arc-shaped fitting, comprising a knee brace, an ankle brace, and a tubing fixation component. The knee brace, ankle brace, and tubing fixation component are connected by an elastic connecting component. The two sides of the knee brace are set as arc-shaped edges, and the inner surface of the arc-shaped edges facing the human body is covered with a medical sponge pad with a thickness of 5mm to 8mm. A first Velcro patch and a second Velcro patch are respectively fixedly arranged on the two sides of the knee brace. Two knee brace arc-shaped fitting straps are symmetrically arranged on the back of the knee brace. The knee brace arc-shaped fitting straps are long strip structures with a length of 20cm to 25cm and a width of 3cm to 4cm. The middle part of the knee brace arc-shaped fitting straps is sewn and fixed to the middle part of the back of the knee brace. A third Velcro patch and a fourth Velcro patch are respectively sewn to the two free ends of the straps.

[0007] Preferably, the ankle brace is a sheet-like structure adapted to the contour of the human ankle joint, made of the same material as the knee brace, ensuring a consistent fit and texture during wear, and improving comfort. The ankle brace has an oval-shaped placement hole in the center, with a major axis of 8cm-10cm and a minor axis of 5cm-7cm. The inner edge of the placement hole is covered with a 1mm-2mm thick medical-grade silicone edging to prevent friction damage between the skin of the heel and the ankle brace fabric. Two circular through holes, 3cm-4cm in diameter, are symmetrically arranged on either side of the placement hole, conforming to the bone contours of the ankle joint. The inner edge of these through holes is also covered with medical-grade silicone edging to prevent pressure and friction damage to the ankle bones, thus improving wearing comfort. The ankle brace has a first elastic band at each end. The first elastic band is made of high-elastic polyurethane fiber, with a width of 2cm-3cm and a length of 12cm-15cm. One end of the first elastic band is sewn to the outer layer of the ankle brace, and a sixth Velcro patch is sewn to the inner side of the other end. A Velcro backing is sewn to the corresponding fitting position on the outer layer of the ankle brace. An extension elastic band is sewn to the bottom of the ankle brace. Fixing straps and second elastic bands are sewn to both sides of the extension elastic band. The fixing straps and second elastic bands are detachably connected by medical Velcro, thereby increasing the stress area of ​​the ankle, avoiding excessive local stress on the ankle, and flexibly adjusting the tightness of the fixation according to the thickness of the patient's ankle joint. At the same time, the high-elastic material will not cause excessive restriction to the ankle joint and is suitable for the slight movement of the patient's limb.

[0008] Preferably, the elastic connecting component includes a first elastic connecting band, a second elastic connecting band, and a third elastic connecting band. Two of the first and second elastic connecting bands are symmetrically arranged on the left and right sides of the upper end of the knee brace. All three elastic connecting bands are made of high-elasticity polyurethane fiber. The lower ends of the first and second elastic connecting bands are sewn and fixed to the upper edge of the knee brace. The upper ends of the first and second elastic connecting bands are respectively sewn and connected to two sets of limb straps. The upper end of the third elastic connecting band is sewn and fixed to the lower edge of the knee brace, and the lower end of the third elastic connecting band is sewn and fixed to the upper edge of the ankle brace. The symmetrically arranged first and second elastic connecting bands connect the knee brace and the limb straps, improving the stability of the overall clamp on the leg. The third elastic connecting band connects the knee brace and the ankle brace, making the clamp a cohesive whole.

[0009] Preferably, the tube fixing assembly includes an arc-shaped groove, a partition plate, a tension band, a rough surface, and a hook surface. It is detachably connected to the outside of a limb bandage via medical-grade Velcro. The base of the tube fixing assembly has an integral groove for accommodating medical tubing. The partition plate is vertically and integrally formed on the bottom surface of the groove of the base, positioned in the middle of the integral groove along the length of the tube fixing assembly. The material of the partition plate is the same as that of the base of the tube fixing assembly, dividing the integral groove into four independent sub-grooves that fix the number of medical tubing sections. The tubing bearing surface of each sub-grooves is an arc-shaped groove, which is a semi-cylindrical groove with an inner diameter of 1cm~2cm and a length of 5cm~7cm. The material is medical-grade flexible silicone with a Shore hardness of 30HA~40HA. The inner surface of the arc-shaped groove has a transverse anti-slip texture with a texture depth of 0.5mm~1mm and a texture spacing of 1mm~2mm. The upper edge of the partition plate has a through groove for the stretch band to pass through. The width of the through groove is adapted to the width of the stretch band. The stretch band is an elastic strip structure with a width of 2cm~3cm and a length of 8cm~10cm. The stretch band passes through all the through grooves on the partition plate along the length of the pipe fixing assembly and is divided by the partition plate into multiple strips corresponding to the sub-grooves. The inner surfaces of two adjacent strips are sewn with a rough surface and a hook surface, respectively. The partition plate divides the overall groove into independent sub-slots, which can separate and fix multiple ECMO tubing, preventing tubing from tangling, squeezing, bending, and clogging. The medical-grade flexible silicone arc-shaped slot with a Shore hardness of 30HA~40HA has a semi-cylindrical structure that can conform to the cylindrical shape of ECMO tubing. With the addition of horizontal anti-slip texture, it can provide a soft bearing surface for the tubing and increase friction with the tubing to prevent the tubing from slipping off. The spandex blended cotton fabric stretch band, in conjunction with the partition plate structure, has each section of the band corresponding to a sub-slot. Through the combination of the rough and hook surfaces, the fixing force can be adjusted individually for each tubing, adapting to medical tubing of different thicknesses. At the same time, the high recovery rate of the elastic material ensures that the fixing effect can still be maintained after repeated use.

[0010] Preferably, the limb strap has a telescopic measuring tape on the side away from the skin. The telescopic measuring tape includes a casing, a tape, and a fixing buckle. The casing is a cylindrical structure with a diameter of 3-4cm and a height of 1-1.5cm, made of medical-grade ABS plastic. The casing is detachably connected to the outer layer of the knee brace via medical-grade Velcro. The tape is a fiberglass coated measuring tape with a width of 1cm, a thickness of 0.2mm, a graduation range of 0-50cm, a minimum graduation of 1mm, and a wear-resistant and waterproof coating on the surface. One end of the tape is connected to a spring roller inside the casing, and the other end extends out of the casing and is fixed with a fixing buckle. The fixing buckle is a rectangular plastic block with a size of 1cm × 2cm and has an elastic groove inside that mates with the tape.

[0011] Preferably, the base of the pipe fixing component is made of semi-transparent medical-grade TPU material, which allows medical staff to observe the status of the pipe in the slot at any time, such as whether there is bending or abnormality on the pipe surface. One end of the tension band is fixed to the left side of the pipe fixing component, and the surface of the tension band is uniformly provided with anti-slip protrusions with a height of 0.3mm~0.5mm and a spacing of 2mm~3mm. The edges of the rough surface and the hook surface are heat-sealed to further improve the friction with the pipe and prevent pipe displacement. The heat-sealing of the rough surface and the hook surface can prevent the edges from coming loose, improve the durability of the tension band, and prevent the loose thread ends from scratching the pipe and skin.

[0012] Preferably, the inner wall of the placement hole of the ankle brace, in addition to the silicone edging, is also provided with annular anti-slip texture. The texture depth is 0.3mm~0.5mm and the spacing is 1.5mm~2mm, which can enhance the friction of the fit with the skin of the heel and prevent the ankle brace from shifting. The hole wall of the through hole adopts an arc transition design with a transition radius ≥2mm. The overall thickness of the ankle brace is 3mm~4mm, which avoids the sharp edges from compressing the ankle bones. The overall thickness of 3mm~4mm takes into account the fit of the strap and breathability, and will not cause the heel area to be stuffy.

[0013] Preferably, the scale on the surface of the telescopic measuring tape is printed with fluorescent ink. The fluorescent ink scale can improve the clarity of readings in dim environments, making it convenient for medical staff to complete measurements at any time. The inner wall of the elastic groove of the fixing buckle is provided with a medical silicone anti-slip pad with a thickness of 0.3mm~0.5mm, which enhances the effect of fixing the tape and prevents the tape from slipping and affecting the measurement accuracy.

[0014] Preferably, the knee brace has an elastic adjustment section at the middle seam of the curved surface fitting strap, which is 3cm to 4cm long and made of high-elastic spandex. This section can adjust the tightness of the strap according to the patient's leg thickness and slight swelling of the limb, and can also accommodate slight leg movements to avoid excessive pressure on the leg.

[0015] Preferably, the knee brace has a three-layer structure. The inner layer is made of medical-grade pure cotton knitted fabric with a weight of 180-220 g / m². The middle layer is made of medical-grade soft sponge. The inner cotton knitted fabric and the middle sponge are fixed together by full-width adhesive dots with a dot spacing of 1cm x 1cm. The outer layer is made of medical-grade nylon elastic fabric with a weight of 150-180 g / m², and its surface is treated to prevent pilling. The inner medical-grade pure cotton knitted fabric is skin-friendly and breathable. Combined with the middle medical-grade soft sponge, it improves comfort against the skin and provides cushioning and pressure relief to the legs. The full-width adhesive fixation prevents sponge displacement. The outer medical-grade nylon elastic fabric, with its anti-pilling treatment, enhances the elasticity and durability of the knee brace, ensures a clean appearance during use, and meets the hygiene requirements of a medical environment.

[0016] Compared with the prior art, the beneficial effects of the present invention are: 1. This ECMO tubing anti-slip fixation clamp, based on a curved surface fit, utilizes a 5mm-8mm thick medical-grade sponge pad inside the knee brace, a skin-friendly and breathable inner layer of medical-grade pure cotton knitted fabric, and medical-grade silicone edging around the placement holes and through-holes of the ankle brace. This prevents repeated tearing of the fixation material from damaging the patient's lower limb skin barrier, while also avoiding friction and pressure from the fabric and straps on the skin and bones. The curved edge of the knee brace and the ankle brace's contour-fitting structure conform to the limb's curve, effectively reducing the probability of skin complications such as contact dermatitis and skin ulceration, while also reducing the frequency of changing fixation materials for nursing staff.

[0017] 2. This ECMO tubing anti-slip fixing clamp based on arc surface fit can fit the cylindrical shape of the ECMO tubing through semi-cylindrical arc groove and horizontal anti-slip texture, which can improve the friction between the tubing and the groove. The partition plate divides the overall groove into independent sub-grooves, which can prevent multiple tubing from getting tangled, bent and blocked.

[0018] 3. This ECMO tubing anti-slip fixation clamp, based on a curved surface fit, features a third elastic connecting strap that directly connects the lower end of the knee brace and the upper end of the ankle brace. Given the varying leg lengths of different patients, the highly elastic material allows for free stretching and contraction based on leg length. For patients with longer legs, the third elastic connecting strap will be stretched to a suitable length, while its high elastic recovery rate ensures it always maintains a certain tension, preserving the fit between the knee brace / ankle brace and the limb. For patients with shorter legs, the third elastic connecting strap will naturally contract, preventing excessively long straps from accumulating on the leg and affecting wearing comfort or tubing fixation. The first and second elastic connecting straps are symmetrically positioned on the left and right sides of the upper end of the knee brace, connecting the knee brace to the limb strap. These straps, in conjunction with the third elastic connecting strap, adjust the fixation position of the knee brace on the thigh according to the overall leg proportions of patients with different leg lengths, while maintaining the overall stability of the clamp on the leg and preventing displacement of the clamp due to leg length differences. Attached Figure Description

[0019] To more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0020] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a schematic diagram of the overall unfolded structure of the present invention; Figure 3 This is a schematic diagram of the pipe fixing structure of the present invention; Figure 4 This is a cross-sectional view of the bonding component of the present invention; Figure 5 This is a schematic diagram of the overall rear structure of the present invention.

[0021] In the diagram: 1. Knee brace strap, 101. Arc-shaped edge, 102. First Velcro patch, 103. Second Velcro patch, 104. Inner layer, 105. Middle layer, 106. Outer layer, 2. Knee brace arc-shaped fitting strap, 201. Third Velcro patch, 202. Fourth Velcro patch, 301. First elastic connecting strap, 302. Second elastic connecting strap, 4. Telescopic measuring tape, 5. Pipe fixing assembly, 501. Arc-shaped groove, 502. Divider plate, 503. Tension band, 504. Textured surface, 505. Hook surface, 6. Ankle brace strap, 601. Through hole, 602. Placement hole, 603. First elastic strap, 604. Extension elastic band, 605. Fixing strap, 606. Second elastic strap, 7. Limb strap, 701. Fifth Velcro patch, 8. Third elastic connecting strap. Detailed Implementation

[0022] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0023] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0024] Please see Figure 1-5 This invention provides a technical solution: an ECMO tubing anti-slip fixation clamp based on arc-shaped fit, including a knee brace 1, an ankle brace 6, and a tubing fixation component 5. The knee brace 1, ankle brace 6, and tubing fixation component 5 are connected by an elastic connecting component. The two sides of the knee brace 1 are set as arc-shaped edges 101 to fit the natural contour of the human knee joint and avoid the edges of the brace from causing pressure or friction damage to the leg skin. The inner surface of the arc-shaped edge 101 facing the human body is covered with a medical sponge pad with a thickness of 5mm to 8mm, which can buffer the pressure of the knee joint, while also being moisture-wicking and breathable, reducing the stuffiness and irritation of the skin during long-term wear. The knee brace 1 has a first Velcro patch 102 and a second Velcro patch 103 fixedly installed on its two sides. The back of the knee brace 1 has two symmetrical curved surface fitting straps 2, which are sized to fit the circumference of the leg and can evenly distribute the binding pressure to avoid excessive pressure on the local skin. The middle seam of the curved surface fitting straps 2 has an elastic adjustment section with a length of 3cm to 4cm. The material is high-elastic spandex with a breaking elongation of ≥400%, which can adapt to the bending and extension of the knee joint and will not restrict the movement of the limb, while maintaining the fit of the straps to the leg. The knee brace curved surface fitting strap 2 is a long strip structure with a length of 20cm~25cm and a width of 3cm~4cm. The middle part of the knee brace curved surface fitting strap 2 is sewn to the middle part of the back of the knee brace 1. The two free ends of the knee brace curved surface fitting strap 2 are respectively sewn with a third Velcro patch 201 and a fourth Velcro patch 202, which can realize the quick fixation and removal of the knee brace and can adjust the tightness of the binding according to the circumference of the patient's leg.

[0025] The knee brace strap 1 features a three-layer structure. The inner layer, made of medical-grade pure cotton knitted fabric (104), weighs 180-220g / m². The medical-grade material ensures safety, while the pure cotton fabric is skin-friendly, breathable, and sweat-absorbent, meeting the long-term needs of ECMO patients. Its moderate weight balances softness and durability. The middle layer, made of medical-grade soft sponge (105), is fixed to the inner 104 pure cotton knitted fabric using full-width adhesive dots with a 1cm x 1cm spacing. The sponge provides excellent cushioning. The pressure-reducing effect and the full-width adhesive fixation method ensure the firm connection between the inner and middle layers while retaining the soft cushioning properties of the sponge, which can distribute the pressure on the legs and improve the fit and comfort. The outer layer is made of medical-grade nylon elastic fabric with a weight of 150~180g / ㎡. At the same time, the surface of this layer is treated with anti-pilling treatment. The nylon elastic fabric has good elasticity and abrasion resistance, adapts to the movement of the legs, and the anti-pilling treatment can improve the appearance and service life of the product, while protecting the inner layer structure from external friction damage.

[0026] The ankle brace 6 is a sheet-like structure that conforms to the contour of the human ankle joint. Its material is the same as the knee brace 1. The ankle brace 6 has an oval-shaped insertion hole 602 in the center, conforming to the natural contour of the ankle joint. The three-layer material ensures skin-friendliness, breathability, and cushioning. Its moderate thickness balances support and wearing comfort, without excessively restricting ankle movement. The insertion hole 602 has a major axis of 8cm~10cm and a minor axis of 5cm~7cm, conforming to the contour of the human heel. Silicone edging prevents the edges of the hole from pressing against the skin. The inner edge of the placement hole 602 is covered with a medical-grade silicone edging with a thickness of 1mm to 2mm. Two circular through holes 601 are symmetrically opened on the left and right sides of the placement hole 602. The diameter of the through holes 601 is 3cm to 4cm, adapting to the bone contours on both sides of the human ankle joint. The inner edge of the through holes 601 is also covered with a medical-grade silicone edging. A first elastic band 603 is provided at each of the front and rear ends of the ankle brace 6. The first elastic band 603 is made of high-elasticity polyurethane fiber, with a width of 2cm to 3cm and a length of 12cm. The ankle brace has a length of m~15cm. One end of the first elastic band 603 is sewn and fixed to the outer layer of the ankle brace 6, and the other end has a sixth Velcro patch sewn to its inner side. A Velcro backing is sewn to the corresponding fitting position on the outer layer of the ankle brace 6. An extension elastic band 604 is sewn and fixed to the bottom of the ankle brace 6. Fixing bands 605 and second elastic bands 606 are sewn and fixed to both sides of the extension elastic band 604. The fixing bands 605 and second elastic bands 606 are detachably connected by medical Velcro, thereby increasing the stress area of ​​the ankle and preventing excessive local stress. The highly elastic material adapts to changes in ankle circumference, and the Velcro allows for quick adjustment of the tightness of the binding, improving the stability of the fit between the brace and the ankle joint and preventing the brace from slipping off.

[0027] In addition to the silicone edging, the inner wall of the placement hole 602 of the ankle brace 6 is also provided with a ring-shaped anti-slip texture. The texture depth is 0.3mm~0.5mm and the spacing is 1.5mm~2mm, which can enhance the friction of the fit with the skin of the heel and prevent the ankle brace 6 from shifting. The hole wall of the through hole 601 adopts a rounded transition design with a transition radius ≥2mm. The overall thickness of the ankle brace 6 is 3mm~4mm.

[0028] The elastic connection assembly includes a first elastic connecting band 301, a second elastic connecting band 302, and a third elastic connecting band 8. Two first elastic connecting bands 301 and 302 are symmetrically arranged on the left and right sides of the upper end of the knee brace 1. All three bands are made of high-elasticity polyurethane fiber with a breaking elongation ≥300% and an elastic recovery rate ≥95%. The lower ends of the first and second elastic connecting bands 301 and 302 are sewn to the upper edge of the knee brace 1. The upper ends of the first and second elastic connecting bands 301 and 302 are sewn to two sets of limb straps 7. The upper end of the third elastic connecting band 8 is sewn to the lower edge of the knee brace 1, and the lower end of the third elastic connecting band 8 is sewn to the upper edge of the ankle brace 6. It possesses excellent tensile and rebound properties, adapts to the length of the human leg, and maintains the connection stability between the components.

[0029] The tubing fixation assembly 5 includes an arc-shaped groove 501, a partition plate 502, a tension band 503, a rough surface 504, and a hook surface 505. It is detachably connected to the outside of a limb strap via medical Velcro. The base of the tubing fixation assembly 5 has an integral groove for accommodating medical tubing. The partition plate 502 is vertically and integrally formed on the bottom surface of the groove, positioned in the middle of the overall groove along the length of the tubing fixation assembly 5. The material of the partition plate 502 is the same as that of the base of the tubing fixation assembly 5, dividing the overall groove into four independent sub-grooves that hold a fixed number of medical tubing. The tubing bearing surface of each sub-grooves is an arc-shaped groove 501, which is a semi-cylindrical groove. The semi-cylindrical structure conforms to the circular outer wall of the ECMO tubing, improving the tubing's fit. The inner diameter and length are adapted to the dimensions of commonly used ECMO tubing. The flexible silicone material is soft and will not compress the tubing, causing deformation and ensuring normal flow of liquid within the tubing. The inner diameter is 1cm~2cm, the length is 5cm~7cm, and the material is medical-grade flexible silicone with a Shore hardness of 30HA~40HA. The inner surface of the arc-shaped groove 501 has a transverse anti-slip texture with a texture depth of 0.5mm~1mm and a texture spacing of 1mm~2mm, which increases the friction with the outer wall of the pipeline and prevents the pipeline from slipping. The upper edge of the partition plate 502 has a through groove for the tension band 503 to pass through. The width of the through groove is adapted to the width of the tension band 503. The tension band 503 is an elastic strip structure with a width of 2cm~3cm and a length of 8cm~10cm. The material is spandex blended cotton fabric with an elastic recovery rate of ≥90%. The tension band 503 passes through all the through grooves on the partition plate 502 along the length of the pipeline fixing component 5. It is divided by the partition plate 502 into multiple band segments that correspond one-to-one with the sub-grooves. The inner surfaces of two adjacent band segments that are close to each other are respectively sewn with a rough surface 504 and a hook surface 505. The tightness of the fixing can be adjusted according to the thickness and number of pipes, so as not to over-compress the pipes; the anti-slip protrusions on the surface increase the friction with the pipes and improve the stability of the fixing; at the same time, the material is skin-friendly and breathable, suitable for long-term use.

[0030] A retractable measuring tape 4 is located on the side of the limb strap 7 away from the skin. It can be installed or removed as needed, and can be removed when not in use to reduce discomfort. The retractable measuring tape 4 includes a casing, a tape, and a fastener. The casing is cylindrical, 3-4cm in diameter and 1-1.5cm in height, made of medical-grade ABS plastic. The casing is detachably connected to the outer layer of the knee brace 1 via medical-grade Velcro. The tape is a fiberglass-coated measuring tape, 1cm wide and 0.2mm thick, with a graduation range of 0-50cm and a minimum graduation of 1mm. It has a wear-resistant and waterproof coating. One end of the tape connects to a spring roller inside the casing, while the other end extends out of the casing and is secured with a fastener. The fastener is a rectangular plastic block, 1cm x 2cm in size, with an internal elastic groove that engages with the tape. The graduations on the tape of the retractable measuring tape 4 are printed with fluorescent ink, and the inner wall of the elastic groove of the fastener has a medical-grade silicone anti-slip pad with a thickness of 0.3mm-0.5mm. The fiberglass coating enhances the durability of the measuring tape, while the waterproof coating meets the cleaning and disinfection needs of clinical settings. The fluorescent scale allows for clear readings even in low-light clinical environments, and the minimum scale of 1mm enables precise measurement of leg circumference. This facilitates adjustment of the strap tightness and also helps in observing changes in limb swelling in ECMO patients.

[0031] The base of the tubing fixation component 5 is made of semi-transparent medical-grade TPU material. The semi-transparent material allows direct observation of the fixed ECMO tubing status, making it easy for medical staff to detect abnormalities such as tubing bends and blockages in a timely manner. The medical-grade TPU is soft, waterproof, and wear-resistant, adaptable to limb movement, and ensures safety during use. One end of the tension band 503 is fixed to the left side of the tubing fixation component 5, and the surface of the tension band 503 is uniformly provided with anti-slip protrusions with a height of 0.3mm~0.5mm and a spacing of 2mm~3mm. The edges of the rough surface 504 and the hook surface 505 are sealed by heat pressing.

[0032] When using, place the inner layer 104 of the knee brace 1 towards the leg, align the curved edge 101 with both sides of the knee joint, ensuring that the medical sponge pad fits the skin, adjust the position around the leg, and initially fix it by the first Velcro 102 and the second Velcro 103 on both sides of the knee brace 1. Pull out the two curved knee brace straps 2 on the back of the knee brace, wrap them around the leg, and then attach the third Velcro 201 and the fourth Velcro 202. Use the middle elastic adjustment section to adapt to the leg circumference.

[0033] Insert your heel through the oval placement hole 602 of the ankle brace 6, ensuring that the bones on both sides of the ankle joint correspond to the through holes 601 to avoid pressure. Tighten the first elastic band 603 at the front and back ends, and attach the sixth Velcro to the outer surface of the ankle brace 6. Adjust the tightness to ensure the brace fits the ankle snugly without affecting blood circulation. Then, stretch the extension elastic band 604 at the bottom of the ankle brace 6 to the arch of the foot, so that the fixing bands 605 on both sides and the second elastic band 606 wrap around the instep. Adjust the second elastic band 606 to a suitable tightness and then attach it with medical Velcro to further distribute the local pressure on the ankle. This completes the wearing of the ankle brace.

[0034] Check the tension of the first elastic connecting band 301, the second elastic connecting band 302, and the third elastic connecting band 8 to ensure there is no excessive tightness or looseness, and adapt to the length of the patient's lower limb. Adjust the position of the limb strap 7 so that the tubing fixation component 5 is in a reasonable area for the lower limb tubing layout. Place the ECMO tubing into the independent sub-slot of the tubing fixation component 5 one by one according to the number of tubing, ensuring that the tubing fits against the inner wall of the arc-shaped slot 501. Pull up the tension band 503 to cover each tubing, and then attach the corresponding band surface 504 to the hook surface 505. Adjust the tightness and check that there is no tension at the tubing interface to ensure that the tubing fits naturally against the limb after fixation without any gaps.

[0035] If you need to measure your leg circumference, fix the cover of the telescopic measuring tape 4 to the side of the limb strap 7 away from the skin with Velcro, pull out the tape and wrap it around the measurement area of ​​the leg, fix the tape with the elastic slot of the buckle, read the fluorescent scale, and remove the tape cover after the measurement is completed to reduce the feeling of wearing a foreign object. Repeat the above operation when measuring regularly to compare and evaluate changes in edema.

[0036] When disassembly is required, first separate the rough side 504 and hook side 505 of the stretch band 503, remove the ECMO tubing, and then untie the first elastic band 603 of the ankle brace 6, the knee brace arc surface fitting band 2 of the knee brace 1, and the Velcro patch in sequence. If the limb is swollen or the activity requirements change, repeat the above steps to adjust the tightness of each component to ensure fixation and comfort.

[0037] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0038] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A curved surface fitting-based ECMO tubing anti-slip fixing clamp, comprising a knee brace (1), an ankle brace (6), and a tubing fixing assembly (5), characterized in that: The knee brace (1), ankle brace (6), and tube fixing assembly (5) are connected by an elastic connecting assembly. The two sides of the knee brace (1) are set as arc-shaped edges (101). The inner surface of the arc-shaped edges (101) facing the human body is covered with a medical sponge pad with a thickness of 5mm to 8mm. The two sides of the knee brace (1) are respectively fixed with a first Velcro patch (102) and a second Velcro patch (103). The back of the knee brace (1) is symmetrically provided with two knee brace arc-shaped fitting straps (2). The knee brace arc-shaped fitting straps (2) are long strip structures with a length of 20cm to 25cm and a width of 3cm to 4cm. The middle part of the knee brace arc-shaped fitting straps (2) is sewn and fixed to the middle part of the back of the knee brace (1). The two free ends of the knee brace arc-shaped fitting straps (2) are respectively sewn with a third Velcro patch (201) and a fourth Velcro patch (202).

2. The ECMO tubing anti-slip fixing clamp based on arc surface fitting according to claim 1, characterized in that: The ankle brace (6) is a sheet-like structure adapted to the contour of the human ankle joint, and its material is the same as that of the knee brace (1). An elliptical placement hole (602) is provided in the middle of the ankle brace (6). The long axis of the placement hole (602) is 8cm~10cm and the short axis is 5cm~7cm. The inner edge of the placement hole (602) is covered with a medical silicone edging with a thickness of 1mm~2mm. Two circular through holes (601) are symmetrically opened on the left and right sides of the placement hole (602). The diameter of the through holes (601) is 3cm~4cm, adapted to the bone contour of the two sides of the human ankle joint. The inner edge of the through holes (601) is also covered with a medical silicone edging. A first elastic band (603) is provided at each of the front and rear ends of the ankle brace (6). The first elastic band (603) is made of high elastic polyurethane fiber, with a width of 2cm~3cm and a length of 12cm~15cm. cm, one end of the first elastic band (603) is sewn and fixed to the outer layer of the ankle brace (6), and the inner side of the other end is sewn with a sixth Velcro patch. The corresponding fitting position of the outer layer of the ankle brace (6) is sewn with a Velcro mother surface. The bottom of the ankle brace (6) is sewn and fixed with an extension elastic band (604). The two sides of the extension elastic band (604) are respectively sewn and fixed with a fixing band (605) and a second elastic band (606). The fixing band (605) and the second elastic band (606) are detachably connected by medical Velcro.

3. The ECMO tubing anti-slip fixing clamp based on arc surface fitting according to claim 1, characterized in that: The elastic connection assembly includes a first elastic connection band (301), a second elastic connection band (302), and a third elastic connection band (8). There are two first elastic connection bands (301) and two second elastic connection bands (302) symmetrically arranged on the left and right sides of the upper end of the knee brace (1). The first elastic connection band (301), the second elastic connection band (302), and the third elastic connection band (8) are all made of high elastic polyurethane fiber, and the breaking elongation of the material is ≥300% and the elastic recovery rate is ≥95%. The lower ends of the first elastic connection band (301) and the second elastic connection band (302) are sewn and fixed to the upper edge of the knee brace (1). The upper ends of the first elastic connection band (301) and the second elastic connection band (302) are respectively sewn and connected to two sets of limb straps (7). The upper end of the third elastic connection band (8) is sewn and fixed to the lower edge of the knee brace (1). The lower end of the third elastic connection band (8) is sewn and fixed to the upper edge of the ankle brace (6).

4. The ECMO tubing anti-slip fixing clamp based on arc surface fitting according to claim 1, characterized in that: The pipe fixing assembly (5) includes an arc-shaped groove (501), a partition plate (502), a tension band (503), a rough surface (504), and a hook surface (505). It is detachably connected to the outside of a limb strap (7) via medical Velcro. The base of the pipe fixing assembly (5) has an integral groove for accommodating medical tubing. The partition plate (502) is vertically and integrally formed on the bottom surface of the groove of the base, positioned in the middle of the integral groove along the length of the pipe fixing assembly (5). The material of the partition plate (502) is the same as that of the base of the pipe fixing assembly (5). The tubing bearing surface of each sub-groove is an arc-shaped groove (501). The arc-shaped groove (501) is a semi-cylindrical groove with an inner diameter of 1cm~2cm and a length of 5cm~7cm. It is made of medical-grade flexible silicone with a Shore hardness of 30HA. 40HA, the inner surface of the groove of the arc-shaped card slot (501) is provided with a transverse anti-slip texture, the texture depth is 0.5mm~1mm and the texture spacing is 1mm~2mm. The upper edge of the partition plate (502) is provided with a through groove for the stretching strip (503) to pass through. The width of the through groove is adapted to the width of the stretching strip (503). The stretching strip (503) is an elastic strip structure with a width of 2cm~3cm and a length of 8cm~10cm. The material is spandex blended cotton fabric with an elastic recovery rate of ≥90%. The stretching strip (503) passes through all the through grooves on the partition plate (502) in sequence along the length direction of the pipe fixing component (5). It is divided by the partition plate (502) into multiple strips that correspond one-to-one with the sub-card slots. The inner surfaces of two adjacent strips that are close to each other are respectively sewn with a rough surface (504) and a hook surface (505).

5. The ECMO tubing anti-slip fixing clamp based on arc surface fitting according to claim 1, characterized in that: The limb strap (7) is provided with a telescopic measuring tape (4) on the side away from the skin. The telescopic measuring tape (4) includes a casing, a tape, and a fixing buckle. The casing is a cylindrical structure with a diameter of 3-4cm and a height of 1-1.5cm. It is made of medical-grade ABS plastic. The casing is detachably connected to the outer layer of the knee brace (1) via medical-grade Velcro. The tape is a glass fiber coated measuring tape with a width of 1cm, a thickness of 0.2mm, a scale range of 0-50cm, a minimum scale of 1mm, and a wear-resistant and waterproof coating on the surface. One end of the tape is connected to a spring roller inside the casing, and the other end extends out of the casing and is fixed with a fixing buckle. The fixing buckle is a rectangular plastic block with a size of 1cm×2cm and an elastic groove inside that cooperates with the tape.

6. The ECMO tubing anti-slip fixing clamp based on arc surface fitting according to claim 1, characterized in that: The base of the pipe fixing component (5) is made of translucent medical-grade TPU material. One end of the stretch band (503) is fixed to the left side of the pipe fixing component (5), and the surface of the stretch band (503) is uniformly provided with anti-slip protrusions with a height of 0.3mm~0.5mm and a spacing of 2mm~3mm. The edges of the rough surface (504) and the hook surface (505) are sealed by heat pressing.

7. The ECMO tubing anti-slip fixing clamp based on arc surface fitting according to claim 1, characterized in that: In addition to the silicone edging, the inner wall of the placement hole (602) of the ankle brace (6) is also provided with an annular anti-slip texture. The texture depth is 0.3mm~0.5mm and the spacing is 1.5mm~2mm, which can enhance the friction of the fit with the skin of the heel and prevent the ankle brace (6) from shifting. The hole wall of the through hole (601) adopts a rounded transition design with a transition radius ≥2mm. The overall thickness of the ankle brace (6) is 3mm~4mm.

8. The ECMO tubing anti-slip fixing clamp based on arc surface fitting according to claim 5, characterized in that: The scale on the tape of the telescopic measuring tape (4) is printed with fluorescent ink, and the inner wall of the elastic groove of the fixing buckle is provided with a medical silicone anti-slip pad with a thickness of 0.3mm~0.5mm.

9. The ECMO tubing anti-slip fixing clamp based on arc surface fitting according to claim 1, characterized in that: The knee brace's curved surface fitting strap (2) has an elastic adjustment section at the middle seam, with a length of 3cm~4cm, made of high-elasticity spandex, and a breaking elongation of ≥400%.

10. The ECMO tubing anti-slip fixing clamp based on arc surface fitting according to claim 1, characterized in that: The knee brace (1) is designed with a three-layer structure. The inner layer (104) is made of medical-grade pure cotton knitted fabric with a weight of 180~220g / ㎡. The middle layer (105) is made of medical-grade soft sponge. The inner layer (104) pure cotton knitted fabric and the middle layer (105) sponge are fixed with full-width dot glue with a dot glue spacing of 1cm×1cm. The outer layer (106) is made of medical-grade nylon elastic fabric with a weight of 150~180g / ㎡. At the same time, the surface of this layer is treated to prevent pilling.

Images