Surgical drape for preventing permeation and rapidly draining

Abstract

The utility model discloses a kind of surgical drapes of anti-infiltration and rapid drainage, comprising: surgical drape includes main body layer, liquid management unit, fixed and protection unit and edge protection unit.Main body layer is composed of antibacterial liquid resistance layer, flow guide layer, memory support layer and biological adhesive layer, with anti-infiltration, rapid drainage, stable fitting and comfortable fixed function.Liquid management unit includes porous sub-guide cotton core and double-cavity liquid storage device, can efficiently drain and store liquid, and real-time monitoring liquid level.Fixed and protection unit includes limb fixing belt and bed body fixing piece, can dynamically adapt to limb change and early warning overload situation.Edge protection unit includes microneedle array patch and sealing rubber tube, realize painless fixing and dynamic sealing.It aims at solving the problem of liquid management, anti-infiltration and fixed stability in prior art;The utility model provides more reliable, safer environment for operation through the synergistic effect of multiple units.

Description

Technical Field

[0001] This utility model relates to the technical field of surgical instruments, and more particularly to a surgical drape that is impermeable and allows for rapid drainage. Background Technology

[0002] Surgical drapes are medical textiles laid in and around the surgical area during surgery to establish a sterile barrier. Their core functions include: isolating the spread of microorganisms, delineating sterile operating areas, and managing fluids generated during surgery. If fluids containing pathogens, such as blood, irrigation fluid, and purulent secretions, seep through the surgical drape, they may contaminate the skin of medical staff or the patient's tissue in non-surgical areas, leading to cross-infection.

[0003] Prior art (2024210591100) describes a surgical drape for easy drainage, comprising: a surgical drape body, with adhesive tape sewn to the four corners of the back of the surgical drape body; a drainage port in the middle of the surgical drape body, and pads attached to both sides of the drainage port; the pads are located on the front of the surgical drape body, and through holes are provided on the side of the surgical drape body away from the drainage port, with two through holes symmetrically distributed on both sides of the surgical drape body; a support pad is also attached to the middle of the surgical drape body, located on the back of the surgical drape body, and has a groove structure communicating with the drainage port on the support pad; a drainage tube is fixedly connected to the groove structure, one end of the drainage tube is outside the surgical drape body and connected to a drainage bag, a drain tube is connected to the drainage bag, and a removable cap is installed at the end of the drain tube away from the drainage bag. However, this utility model has the following defects: 1. A large amount of fluid generated during the operation, especially under high pressure or rapid flow, may still seep under the surgical drape, thereby contaminating the surgical environment, increasing the risk of infection, destroying the sterile environment of the surgical area, and leading to postoperative infection and other complications; 2. The surgical drape is mainly fixed by the adhesive tape at the four corners, but during the operation, due to the patient's limb movement, the traction of the surgical operation, and the influence of the fluid, the surgical drape is prone to move or shift, and cannot always maintain a stable position.

[0004] Therefore, it is necessary to improve an existing surgical drape that provides anti-permeability and rapid drainage to solve the above problems. Summary of the Invention

[0005] This invention overcomes the shortcomings of the prior art by providing a surgical drape that is impermeable and allows for rapid drainage, aiming to solve the problems existing in the prior art regarding fluid management, impermeability, and fixation stability of surgical drapes.

[0006] To achieve the above objectives, the technical solution adopted by this utility model is as follows: a surgical drape that is impermeable and allows for rapid drainage, comprising: a main body layer, a liquid management unit disposed on the main body layer, a fixing and protection unit, and an edge protection unit;

[0007] The main body layer consists of a composite antibacterial liquid-blocking layer, a flow-guiding layer, a memory support layer, and a bio-adhesive layer, stacked sequentially from top to bottom.

[0008] The liquid management unit is disposed on the surface of the main body layer and includes: a porous guide cotton core and a dual-chamber liquid storage device connected to the cotton core; the porous guide cotton core directly covers the guide layer of the main body layer and adsorbs the surgical field liquid through physical contact; the dual-chamber liquid storage device is connected to the end of the porous guide cotton core through a pipe interface to realize liquid delivery.

[0009] The fixation and protection unit is integrated at the edge of the main body layer and includes: limb fixation straps and bed fixation components; the limb fixation straps are sutured or heat-pressed to both sides of the main body layer for fixing the patient's limbs; the bed fixation components are installed at the four corners of the main body layer through buckles or embedded structures and connected to the operating table.

[0010] The edge protection unit is directly integrated with the boundary of the main body layer and includes: a microneedle array patch and a sealing tube integrated into the edge of the surgical drape; the microneedle array patch adheres to the edge area of ​​the bio-adhesive layer of the main body layer and conforms to the skin, while the sealing tube is integrated inside the edge of the surgical drape.

[0011] In a preferred embodiment of this invention, the antibacterial liquid-blocking layer is a polytetrafluoroethylene expanded membrane with a micropore diameter of 0.2–5 μm and a surface nano-silver coating density of 2.8 ± 0.3 mg / cm³. 2 The surface of the flow-guiding layer is provided with laser-engraved diamond-shaped spiral grooves, 0.5 mm deep and 1 mm wide, and contains 60%–80% gradient density SAP cotton inside; the memory support layer is a TPU elastomer mesh skeleton with a pore size of 2.0–3.0 mm; the bio-adhesive layer is a composite layer of hydrogel and medical pressure-sensitive adhesive, with an adhesion strength of 5.8 ± 0.5 N / cm. 2 .

[0012] In a preferred embodiment of this invention, the SAP cotton gradient density of the flow guide layer is 60% for the surface layer and 80% for the bottom layer.

[0013] In a preferred embodiment of this utility model, the porous guide cotton core is composed of a central main tube connected to three branch capillary tubes to form a tree-like structure, with a superhydrophilic coating on the surface and a contact angle of <10°; the dual-chamber liquid storage device includes a waste liquid chamber and a spare liquid chamber.

[0014] In a preferred embodiment of this utility model, the waste liquid chamber has a built-in liquid level sensor and an audible and visual alarm; the spare chamber is pre-filled with 50ml of physiological saline and connected through a quick-release magnetic locking interface with a magnetic attraction force ≥8N; a self-sealing silicone valve is provided at the interface between the waste liquid chamber and the spare chamber.

[0015] In a preferred embodiment of this utility model, the limb fixation strap has a built-in pneumatic hook and loop fastener with an anti-displacement strength >25N; the bed frame fixing component is equipped with a shape memory alloy actuator and a pressure feedback lamp.

[0016] In a preferred embodiment of this invention, the microneedle array patch has a microneedle length of 400-500 μm, a diameter of 1-100 μm, and an array width of 25-500 μm.

[0017] In a preferred embodiment of this utility model, a surgical observation window is further provided on the main body layer.

[0018] In a preferred embodiment of this utility model, the central main tube of the porous guide cotton core penetrates the main body layer and extends to the dual-chamber liquid storage device.

[0019] In a preferred embodiment of this invention, the antibacterial liquid-blocking layer, the flow-guiding layer, the memory support layer, and the bio-adhesive layer are composited into an integral structure by hot pressing.

[0020] This utility model solves the defects existing in the background technology, and has the following beneficial effects:

[0021] (1) The main body of this utility model adopts a four-layer composite structure design to achieve multiple protections and comfortable fixation. The outermost polytetrafluoroethylene expanded membrane serves as the first barrier for body fluids, and the surface nano-silver coated PTFE membrane has both high-efficiency antibacterial and high moisture permeability, effectively isolating the surgical environment and reducing the risk of infection. The drainage layer forms a capillary effect-enhanced structure through gradient density SAP cotton and laser-engraved diamond spiral grooves. The surface layer has 60% SAP content to accelerate liquid penetration, and the bottom layer has 80% SAP content to achieve liquid storage and locking, ensuring rapid drainage and storage of fluid in the surgical field and avoiding accumulation that affects operation. The memory support layer adopts a TPU elastomer mesh skeleton, which uses deformation memory function to maintain dynamic fit with the human body surface, improve tensile strength, and ensure the closed and stable operation of the surgical area. The innermost layer of hydrogel and medical pressure-sensitive adhesive composite bio-adhesive layer replaces traditional adhesives to achieve painless and strong fixation, reduce skin irritation, and improve patient comfort.

[0022] (2) The fluid management unit of this utility model significantly improves the efficiency and safety of intraoperative fluid management through a tree-like diversion network and a dual-chamber fluid storage design. The porous guide cotton core adopts a tree-like network composed of a central main tube and three branch capillary tubes, which expands the coverage area. The super-hydrophilic coating on the surface makes the contact angle <10°. It actively guides the flow using the capillary effect, quickly collecting the surgical field fluid into the fluid storage device, avoiding fluid retention and reducing the frequency of wiping. In the dual-chamber fluid storage device, the waste fluid chamber has a built-in liquid level sensor and an audible and visual alarm. When the liquid level reaches 80%, the alarm is triggered to prevent overflow and contamination. The spare chamber is pre-filled with 50ml of physiological saline. It can achieve rapid intraoperative flushing through a quick-release magnetic locking interface. The self-sealing silicone valve prevents backflow and ensures the continuity of fluid management. This unit integrates efficient drainage, real-time monitoring and emergency treatment functions, which significantly improves the efficiency of intraoperative treatment and reduces the risk of infection.

[0023] (3) The fixation and protection unit and the edge protection unit of this utility model work together to construct a dynamic adaptation-overload warning-zero pressure injury protection system. The limb fixation strap has a built-in fiber optic sensor to monitor the pressure range, and the pneumatic hook and loop fastener automatically inflates to compensate for limb swelling, with an anti-displacement strength >25N, preventing pressure sores. The bed fixation component uses a shape memory alloy actuator, which triggers a red warning light when there is a pressure overload to prevent the drape from shifting. In the edge protection unit, the biodegradable PLGA microneedle array patch carries lidocaine sustained-release agent, and the microneedles are 400-500μm long, penetrating the stratum corneum of the epidermis to achieve painless anchoring; the peristaltic pump continuously injects biological sealant to fill the gap between the drape and the skin, forming a dynamic sealing system to isolate contaminants. This system comprehensively improves the safety and reliability of the surgical procedure through dynamic adaptation, real-time warning and painless sealing functions. Attached Figure Description

[0024] The present invention will be further described below with reference to the accompanying drawings and embodiments;

[0025] Figure 1 This is a structural diagram of the main layer of a preferred embodiment of the present invention;

[0026] Figure 2 This is a simplified structural diagram of a preferred embodiment of the present invention;

[0027] In the diagram: 1. Main body layer; 2. Antibacterial liquid-resistant layer; 3. Flow guiding layer; 4. Memory support layer; 5. Bio-adhesive layer; 6. Porous guide cotton core; 7. Dual-chamber liquid storage device; 8. Limb fixation strap; 9. Bed body fixation component; 10. Peristaltic pump; 11. Surgical observation window. Detailed Implementation

[0028] 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.

[0029] Many specific details are set forth in the following description in order to provide a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Therefore, the scope of protection of the present invention is not limited to the specific embodiments disclosed below.

[0030] A permeability-proof and rapid drainage surgical drape includes: a main body layer 1, a liquid management unit disposed on the main body layer 1, a fixing and protection unit, and an edge protection unit;

[0031] like Figure 1 As shown, specifically, the main body layer 1 includes, from top to bottom: an antibacterial liquid-blocking layer 2, a flow-guiding layer 3, a memory support layer 4, and a bio-adhesive layer 5; the four layers are hot-pressed together as a whole, with the bio-adhesive layer 5 located at the bottom layer in direct contact with the skin, and the antibacterial liquid-blocking layer 2 located at the outermost layer and exposed to the surgical environment.

[0032] The antibacterial liquid barrier layer 2 is a polytetrafluoroethylene expanded membrane with a micropore diameter of 0.2-5μm. The surface is coated with a nano-silver PTFE membrane with a nano-silver coating density of 2.8±0.3mg / cm2, providing high moisture permeability and high antibacterial rate, forming the first barrier of body fluids.

[0033] The flow-guiding layer 3 is constructed with a three-dimensional flow-guiding network of gradient density SAP cotton. The surface is laser-engraved with diamond-shaped spiral grooves. The diamond mesh is 0.5mm deep and 1mm wide, forming a capillary effect enhancement structure, which increases the wicking speed. The SAP content is 60%-80%, and the gradient construction is used. The surface layer is 60% SAP to accelerate penetration, and the bottom layer is 80% SAP to lock in the liquid.

[0034] The memory support layer 4 is a TPU elastomer mesh skeleton with a mesh size of 2.0-3.0mm. It maintains the dynamic fit of the surgical drape to the curved surface of the human body through deformation memory function, and the tensile strength is improved compared with the traditional structure.

[0035] The bio-adhesive layer 5, a composite layer of hydrogel and medical pressure-sensitive adhesive, replaces traditional adhesives, achieving an adhesion strength of 5.8 ± 0.5 N / cm².

[0036] The main body layer 1 achieves its core functions through a four-layer composite structure: the outermost polytetrafluoroethylene expanded membrane provides a high antibacterial rate and a body fluid barrier; the gradient density SAP diversion layer 3 below it uses laser-engraved diamond grooves to accelerate liquid penetration and locking; the memory support layer 4 uses a TPU elastic mesh to maintain dynamic adhesion; the innermost hydrogel composite adhesive replaces traditional adhesives to achieve painless and strong fixation; the four layers work together to achieve an integrated effect of "anti-penetration - fast drainage - stable adhesion - comfortable fixation".

[0037] The liquid management unit includes a porous guide cotton core 6 and a dual-chamber liquid storage device 7 connected to the porous guide cotton core 6. The liquid management unit is disposed on the surface of the main body layer 1 and includes a porous guide cotton core 6 and a dual-chamber liquid storage device 7 connected to the cotton core. The porous guide cotton core 6 directly covers the flow guiding layer 3 of the main body layer 1 and absorbs the surgical field liquid through physical contact. The dual-chamber liquid storage device 7 is connected to the end of the porous guide cotton core 6 through a pipe interface to realize liquid delivery.

[0038] The porous drainage core 6 includes: a central main tube and three branch capillaries connected to the central main tube, forming a tree-like drainage network, which expands the coverage area and improves drainage efficiency; the central main tube and branch capillaries are coated with a super-hydrophilic coating with a contact angle of <10°; it actively guides the flow using the capillary effect, quickly collecting the surgical field fluid into the reservoir, thus increasing the drainage speed; the multi-branch layout avoids fluid retention in tissue depressions, reducing the frequency of intraoperative wiping.

[0039] The dual-chamber liquid storage device 7 includes: a waste liquid chamber and a spare liquid chamber;

[0040] The waste liquid chamber has a built-in liquid level sensor and an audible and visual alarm, which will trigger an alarm when the liquid level reaches 80% of the capacity.

[0041] The spare chamber is pre-filled with 50ml of normal saline. Intraoperative flushing of the tubing is achieved through a quick-release magnetic locking interface, and a self-sealing silicone valve prevents backflow of the fluid.

[0042] The fluid management unit achieves efficient fluid management through a tree-like distribution network and a dual-chamber fluid storage design, significantly improving intraoperative treatment efficiency and infection control reliability.

[0043] The fixation and protection unit is integrated at the edge of the main body layer 1, including: limb fixation strap 8 and bed fixation component 9; the limb fixation strap 8 is sutured or heat-pressed to both sides of the main body layer 1 for fixing the patient's limb; the bed fixation component 9 is installed at the four corners of the main body layer 1 by buckles or embedded structure and connects to the operating table;

[0044] The limb fixation strap 8 has a built-in pneumatic hook and loop fastener that automatically compensates for limb swelling through inflation, and has an anti-displacement strength of >25N;

[0045] The bed frame fastener 9 uses a shape memory alloy actuator, and the pressure feedback light displays a red warning when overloaded.

[0046] The fixation and protection unit achieves safety protection through dynamic fixation and real-time monitoring mechanisms. The limb fixation strap 8 has a built-in pneumatic hook and loop fastener that automatically inflates to compensate for deformation when the limb swells. The bed frame fixation component 9 uses a shape memory alloy actuator that immediately triggers a red warning light when pressure is overloaded, avoiding the risk of displacement. Together, they achieve an integrated protection effect of dynamic adaptation, overload warning, and zero pressure injury.

[0047] The edge protection unit is directly integrated with the boundary of the main body layer 1 and includes: a microneedle array patch and a sealing tube integrated into the edge of the surgical drape. The sealing tube can be connected to an external peristaltic pump 10. The microneedle array patch adheres to the edge area of ​​the bioadhesive layer 5 of the main body layer 1 and conforms to the skin. The sealing tube is integrated inside the edge of the surgical drape and can store sealant. The peristaltic pump slowly injects the sealant into the sealing tube to form a closed structure.

[0048] The microneedle array patch is made of biodegradable PLGA material. The patch is densely covered with microneedles, each 400-500 μm in length, arranged in an array. The microneedle diameter ranges from 1-100 μm, and the array width is 25-500 μm. Each microneedle carries lidocaine sustained-release agent for painless fixation during surgery. The 400-500 μm length of the microneedles allows them to penetrate the stratum corneum without reaching nerve endings in the dermis, enabling painless puncture. When the microneedle array patch is applied to the skin of the surgical area, slight pressure forces the microneedles to penetrate the stratum corneum, forming micron-level physical channels.

[0049] The sealing tube is integrated into the edge area of ​​the surgical drape, adjacent to the microneedle array patch, and is responsible for storing the biological sealant. The peristaltic pump 10 has a flow rate range of 0.002-600 ml / min, ensuring uniform injection of the sealant. The peristaltic pump 10 is driven by a motor to rotate the rollers, which compress the pump tube to create a vacuum. The air pressure difference draws the biological sealant from the reservoir into the pump tube. As the rollers rotate continuously, the sealant in the pump tube is continuously compressed to the edge area of ​​the surgical drape, filling the gap between the drape and the skin. The peristaltic pump 10 and the microneedle array patch work together to form a dynamic sealing system. The microneedle array provides initial mechanical anchoring, while the peristaltic pump 10 continuously injects the sealant, ensuring that the drape remains sealed throughout the surgical procedure.

[0050] The main body layer 1 is also equipped with a surgical observation window 11 for observing the surgical procedure.

[0051] In use, the surgical area is cleaned and dried. The main body layer 1 of the surgical drape is unfolded, and the bio-adhesive layer 5 is applied to the patient's skin. Initial fixation is achieved by applying gentle pressure for 30 seconds. Simultaneously, the microneedle array patch pierces the stratum corneum of the epidermis, releasing lidocaine for painless anchoring. The peristaltic pump 10 integrated into the single edge is activated, continuously injecting bio-sealant into the gap between the surgical drape and the skin. The sealant flows with the curvature of the body to fill gaps, forming a closed-loop anti-leakage barrier in conjunction with the microneedle anchoring. A tree-like guide cotton core covers the concave areas of the surgical field, and the superhydrophilic coating actively absorbs accumulated fluid using capillary action. The cotton core is connected to the waste fluid chamber of the dual-chamber fluid storage device 7, where intraoperative blood / irrigation fluid automatically flows in. If the flow rate in the pipeline decreases, the waste fluid chamber is removed, and the magnetic locking interface (adsorption force ≥8N) is quickly connected to the spare chamber. The pipeline is pre-filled with saline solution for 3 seconds, and the self-sealing silicone valve automatically blocks backflow. When the waste fluid chamber level reaches 80%, an audible and visual alarm is triggered to prompt replacement. The limb fixation strap 8 is automatically inflated to compensate for swelling via pneumatic hook and loop fasteners. The bed fixation component 9 illuminates a red warning light when overloaded.

[0052] Based on the preferred embodiments of this utility model described above, those skilled in the art can make various changes and modifications without departing from the technical concept of this utility model. The technical scope of this utility model is not limited to the contents of the specification, but must be determined according to the scope of the claims.

Claims

1. A surgical form for preventing permeation and providing rapid drainage, comprising: Main body layer (1), liquid management unit, fixing and protection unit and edge protection unit disposed on the main body layer (1), Its characteristics are: The main body layer (1) consists of a composite antibacterial liquid-blocking layer (2), a flow-guiding layer (3), a memory support layer (4), and a bio-adhesive layer (5) stacked sequentially from top to bottom; The liquid management unit is set on the surface of the main body layer (1) and includes: a porous guide cotton core (6) and a dual-chamber liquid storage device (7) connected to the cotton core; the porous guide cotton core (6) directly covers the guide layer (3) of the main body layer (1) and adsorbs the surgical field liquid through physical contact; the dual-chamber liquid storage device (7) is connected to the end of the porous guide cotton core (6) through a pipe interface to realize liquid transportation; The fixing and protection unit is integrated at the edge of the main body layer (1) and includes: limb fixation strap (8) and bed fixation component (9); the limb fixation strap (8) is sewn or heat-pressed to both sides of the main body layer (1) for fixing the patient's limb; the bed fixation component (9) is installed at the four corners of the main body layer (1) by buckle or embedded structure and connected to the operating table; The edge protection unit is directly integrated with the boundary of the main body layer (1) and includes: a microneedle array patch and a sealing tube integrated into the edge of the surgical drape; the microneedle array patch is adhered to the edge area of ​​the bio-adhesive layer (5) of the main body layer (1) and fits the skin, and the sealing tube is integrated inside the edge of the surgical drape.

2. The surgical drape for impermeability and rapid drainage according to claim 1, characterized in that: The antibacterial liquid-blocking layer (2) is a polytetrafluoroethylene expanded membrane with a micropore diameter of 0.2-5 μm and a surface nano-silver coating density of 2.8±0.3 mg / cm2; the flow-guiding layer (3) has laser-engraved diamond-shaped spiral grooves with a depth of 0.5 mm and a width of 1 mm, and contains 60%-80% gradient density SAP cotton inside; the memory support layer (4) is a TPU elastomer mesh skeleton with a pore size of 2.0-3.0 mm; the bio-adhesive layer (5) is a composite layer of hydrogel and medical pressure-sensitive adhesive with an adhesion strength of 5.8±0.5 N / cm2.

3. The surgical drape for impermeability and rapid drainage according to claim 2, characterized in that: The SAP cotton gradient density of the flow guide layer (3) is 60% for the surface layer and 80% for the bottom layer.

4. The surgical drape for impermeability and rapid drainage according to claim 1, characterized in that: The porous guide cotton core (6) is composed of a central main tube connected to three branch capillary tubes to form a tree-like structure, with a super-hydrophilic coating on the surface and a contact angle of <10°; the dual-chamber liquid storage device (7) includes a waste liquid chamber and a spare liquid chamber.

5. The surgical drape for impermeability and rapid drainage according to claim 4, characterized in that: The waste liquid chamber has a built-in liquid level sensor and an audible and visual alarm; the spare chamber is pre-filled with 50ml of physiological saline and is connected via a quick-release magnetic locking interface with a magnetic attraction force ≥8N; a self-sealing silicone valve is provided at the interface between the waste liquid chamber and the spare chamber.

6. The surgical drape for impermeability and rapid drainage according to claim 1, characterized in that: The limb fixation strap (8) has a built-in pneumatic hook and loop fastener with a displacement resistance strength of >25N; the bed frame fixation component (9) is equipped with a shape memory alloy actuator and a pressure feedback lamp.

7. The surgical drape for impermeability and rapid drainage according to claim 1, characterized in that: The microneedle array patch has a microneedle length of 400–500 μm, a diameter of 1–100 μm, and an array width of 25–500 μm.

8. The surgical drape for impermeability and rapid drainage according to claim 1, characterized in that: The main body layer (1) is also provided with a surgical observation window (11).

9. The surgical drape for impermeability and rapid drainage according to claim 1, characterized in that: The central main tube of the porous guide cotton core (6) penetrates the main body layer (1) and extends to the dual-chamber liquid storage device (7).

10. A surgical drape for impermeability and rapid drainage according to claim 1, characterized in that: The antibacterial liquid barrier layer (2), the flow guiding layer (3), the memory support layer (4), and the bio-adhesive layer (5) are composited into an integral structure by hot pressing.

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