Intermittent inflating and pressurizing device for preventing deep venous thrombosis

Abstract

The invention discloses an intermittent inflating and pressurizing device for preventing deep venous thrombosis, which comprises an adapting ring, an adapting bracket is arranged at the top end of the adapting ring, the adapting bracket is composed of a plurality of groups of bracket rods, connecting rods are arranged among the bracket rods, a supporting base plate is arranged on one side of the adapting bracket, and a plurality of connecting rods are arranged on the other side of the adapting bracket. A plurality of air bags are arranged on one side of the supporting gasket, the outer side of the adaptive support is sleeved with a flexible pad, the interior of each air bag is divided into a plurality of areas of different sizes, a controller is arranged on the other side of each flexible pad, and an air pump is arranged on one side of each controller; the adaptive ring adopts a combined innovative design of a semicircular supporting ring and a rotatable supporting sheet, the airbag system adopts a composite design of multi-region independent division and honeycomb-shaped soft plastic grids, and a plurality of independent regions divided according to a preset proportion inside are connected with an air pump through independent pipelines, so that differential pressure output of different regions can be realized; and the requirement of precise pressurization treatment is met.

Description

Technical Field

[0001] This invention relates to the field of pressurization devices, and more particularly to an intermittent pneumatic pressurization device for the prevention of deep vein thrombosis. Background Technology

[0002] Intermittent pneumatic compression devices (IPCs) are non-invasive physical medical devices for preventing deep vein thrombosis (DVT). Their core function is to simulate the action of a muscle pump through periodic inflation and deflation, promoting venous blood return and reducing the risk of thrombosis. They mainly consist of an inflatable cuff (suitable for lower limbs, upper limbs, etc.), a pressure control unit, and connecting tubing. They are widely used in high-risk groups such as postoperative patients and those on prolonged bed rest. During operation, the unit controls the cuff to inflate gradually from distal to proximal according to a preset program. For example, in the lower limb device, pressure is first applied to the ankle (40-50 mmHg), then sequentially transmitted to the calf and thigh (pressure decreasing step by step), squeezing the deep veins and promoting blood return. After maintaining this pressure for 10-15 seconds, the cuff is rapidly deflated, allowing the blood vessels to dilate. One cycle is completed every 1-2 minutes. This device requires no active patient cooperation, compensates for insufficient muscle activity in bedridden patients, and enhances the activity of the fibrinolytic system, providing dual prevention of thrombosis from both mechanical and biological perspectives. It boasts high safety and few complications, making it an important adjunct to pharmacological prevention. Intermittent pneumatic compression devices for deep vein thrombosis prevention need to be adaptable to different limb circumferences and body positions, while ensuring accurate compression, wearing comfort, and long-term safety. It promotes venous return by simulating the muscle pump effect. Existing devices have significant shortcomings: limited adaptability, making them difficult to accommodate limbs of varying sizes; insufficient flexibility in support adjustment, failing to meet the needs of patients in various positions such as bedridden and sitting; the airbag is mostly a one-piece design, resulting in poor pressure uniformity, easily leading to discomfort from excessively high local pressure or affecting the preventive effect from being too low; insufficient coordination between structural strength and pressure transmission, making the airbag prone to deformation after inflation; significant friction and irritation against the skin during wear, resulting in poor long-term comfort; low modularity, inconvenient assembly and maintenance, and difficulty in meeting the diverse and precise prevention needs of clinical practice.

[0003] Therefore, we propose an intermittent pneumatic compression device for the prevention of deep vein thrombosis. Summary of the Invention

[0004] This invention aims to provide an intermittent pneumatic compression device for the prevention of deep vein thrombosis. Key requirements include: an adjustable and adaptable structure to flexibly accommodate different limb circumferences and various body positions; a multi-regional independent airbag system to achieve differentiated and precise compression; optimized airbag structure to balance strength and pressure uniformity; enhanced flexible protection to improve long-term wearing comfort; and a modular design for easy assembly and maintenance. Ultimately, the invention aims to achieve wide adaptability, precise compression, comfortable wear, and convenient use, ensuring both the effectiveness and safety of deep vein thrombosis prevention.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] An intermittent pneumatic compression device for the prevention of deep vein thrombosis includes an adaptation ring, an adaptation support at the top of the adaptation ring, the adaptation support being composed of several sets of support rods, connecting rods between the support rods, a support pad on one side of the adaptation support, several airbags on one side of the support pad, and a flexible pad on the outside of the adaptation support.

[0007] As a further embodiment of the present invention: the airbag is divided into several areas of different sizes inside, a controller is provided on the other side of the flexible pad, and an air pump is provided on one side of the controller.

[0008] As a further aspect of the present invention: the air pump is connected to each area of ​​the airbag of different sizes via a separate pipeline. The areas of different sizes within the airbag are arranged in a 5:3:2 ratio. The airbag system adopts a composite design of independent division of multiple areas and honeycomb soft plastic mesh. Multiple independent areas divided according to a preset ratio are connected to the air pump via separate pipelines, which can realize differentiated pressure output in different areas to meet the needs of precise pressure treatment. The honeycomb soft plastic mesh not only enhances the structural strength of the airbag, but the flow holes opened between the meshes can ensure smooth airflow inside the airbag, so that the pressure is evenly transmitted to the limb surface, avoiding excessively high or low local pressure, and improving the stability and safety of pressure treatment. It is also worth noting that each independent zone of the airbag should be equipped with an independent pressure sensor for electrical connection with the controller.

[0009] As a further embodiment of the present invention: the adaptation ring includes a support ring, which is semi-circular when viewed from above, and has an annular sliding groove on its inner side, with a bevel gear disposed at the center of the inner wall of the sliding groove.

[0010] As a further embodiment of the present invention: support plates are provided on both sides of the inner wall of the sliding groove. The support plates are semi-circular and rotate along the sliding groove to both sides of the adaptation ring. A gear rack is provided on the inner side of the support plate, and the gear rack meshes with a bevel gear.

[0011] As a further embodiment of the present invention: the support rod includes two straight rods, the end faces of the straight rods are spherical and have a plurality of guide grooves, the end faces of the two straight rods with the guide grooves are opposite each other and are connected by a steering rod.

[0012] As a further embodiment of the present invention: a connector is provided at the other end of the straight rod, and a plurality of connecting holes are provided at equal intervals at the top end of the adapting ring, and the straight rod is threadedly connected to the connecting holes.

[0013] As a further embodiment of the present invention: the surface of the straight rod is provided with a threaded hole for connecting with the support pad, and the surface of the straight rod is provided with a slot, the slots corresponding to each other and being sleeved by the end face of the connecting rod.

[0014] As a further embodiment of the present invention: the inner wall of the support piece is provided with a flexible ring, the support piece rotates with the adaptation ring via a sliding groove to form a complete circle, and the support pieces engage with each other by rotation.

[0015] As a further aspect of the present invention: the inner wall of the airbag is provided with a plurality of honeycomb-shaped soft plastic meshes, and flow holes are provided between the soft plastic meshes, and airflow is achieved by means of the flow holes.

[0016] Compared with the prior art, the present invention provides an intermittent pneumatic compression device for the prevention of deep vein thrombosis, which has the following beneficial effects:

[0017] 1. The present invention adopts an innovative design combining a semi-circular support ring and a rotatable support piece. The core of the design is to achieve precise rotational adjustment of the support piece along the sliding groove through the meshing transmission of the built-in bevel gear and the gear rack on the inner side of the support piece. After closing, it can form a complete circular structure and the support pieces can be interlocked with each other, which can flexibly adapt to the limb circumference of different patients and effectively solve the problem of single adaptation of traditional devices. At the same time, the flexible ring added to the inner side of the support piece can closely fit the limb surface, which not only improves the stability of the adaptation but also enhances the fit when wearing.

[0018] 2. The present invention provides a multi-dimensional flexible adjustment capability for the stent. Its core component, the stent rod, adopts a combination structure of a spherical end face and a steering rod. The guide groove on the spherical end face provides stable guidance for the steering rod, enabling the stent rod to flexibly turn at multiple angles. One end of the straight rod is threadedly connected to the connecting hole of the adaptation ring through a connector, and the other end is fixed to the support pad through a threaded hole. At the same time, the surface groove is fitted with the end face of the connecting rod to ensure that the entire stent structure remains stable after adjustment, which can adapt to the usage needs of patients in different body positions.

[0019] 3. In this invention, the airbag system adopts a composite design of multi-regional independent division and honeycomb soft plastic mesh. The internal multiple independent regions, divided according to a preset ratio, are connected to the air pump through separate pipelines, which can realize differentiated pressure output in different regions to meet the needs of precise pressure treatment. The honeycomb soft plastic mesh not only enhances the structural strength of the airbag, but the flow holes opened between the meshes can ensure smooth airflow inside the airbag, so that the pressure is evenly transmitted to the limb surface, avoiding excessively high or low local pressure, and improving the stability and safety of pressure treatment.

[0020] 4. The present invention adopts a modular assembly design for the whole device. The core components are reliably connected by means of threaded connection, slot fitting, etc. The assembly and disassembly process is convenient and efficient, which facilitates later maintenance and replacement. At the same time, the flexible pad on the outside of the adaptable bracket and the flexible ring on the inside of the support plate form a double flexible protection, which can effectively reduce friction and irritation when the device comes into contact with the skin, improve the comfort of long-term wear, and is suitable for scenarios that require long-term use such as postoperative bed rest.

[0021] The parts of this device not covered herein are the same as or can be implemented using existing technologies. This invention has a simple structure and is easy to operate. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the overall structure of an intermittent pneumatic pressurization device for the prevention of deep vein thrombosis proposed in this invention.

[0023] Figure 2 This is a schematic diagram of the fit between the adaptor stent and the adaptor ring of an intermittent pneumatic compression device for the prevention of deep vein thrombosis proposed in this invention;

[0024] Figure 3 This is a three-dimensional structural schematic diagram showing some details of the overall structure of an intermittent pneumatic pressurization device for the prevention of deep vein thrombosis proposed in this invention.

[0025] Figure 4 This is a three-dimensional structural diagram of the adaptation ring of an intermittent pneumatic pressurization device for the prevention of deep vein thrombosis proposed in this invention.

[0026] Figure 5 This is a cross-sectional three-dimensional structural diagram of the air bladder of an intermittent inflation and pressurization device for the prevention of deep vein thrombosis proposed in this invention.

[0027] Figure 6 This is a three-dimensional structural diagram of the air bladder and support pad of an intermittent pneumatic pressurization device for the prevention of deep vein thrombosis proposed in this invention.

[0028] Figure 7 This is a three-dimensional structural diagram showing partial details of the straight rod of an intermittent pneumatic pressurization device for deep vein thrombosis prevention proposed in this invention.

[0029] In the diagram: 1. Adaptive ring; 2. Adaptive bracket; 3. Bracket rod; 4. Connecting rod; 5. Support pad; 6. Airbag; 7. Flexible pad; 8. Controller; 9. Air pump; 10. Support ring; 11. Sliding groove; 12. Bevel gear; 13. Support plate; 14. Gear rack; 15. Straight rod; 16. Guide groove; 17. Steering rod; 18. Connector; 19. Connecting hole; 20. Threaded hole; 21. Slot; 22. Flexible ring; 23. Soft plastic mesh; 24. Flow hole. Detailed Implementation

[0030] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments.

[0031] In the description of this invention, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0032] Example: An intermittent pneumatic compression device for the prevention of deep vein thrombosis, such as Figures 1-7As shown, the device includes an adaptation ring 1, with an adaptation bracket 2 at its top. The adaptation bracket 2 is composed of several sets of support rods 3, with connecting rods 4 between the support rods 3. A support pad 5 is provided on one side of the adaptation bracket 2, and several airbags 6 are provided on one side of the support pad. A flexible pad 7 is fitted on the outside of the adaptation bracket 2. The airbags 6 are internally divided into several areas of different sizes. A controller 8 is provided on the other side of the flexible pad 7, and an air pump 9 is provided on one side of the controller 8. The air pump 9 is connected to each area of ​​different sizes of the airbags 6 by a separate pipeline. The areas of different sizes inside the airbags 6 are arranged in a five-three pattern. The two-part arrangement of the support ring 1 and the adaptive ring 2 features an innovative design combining a semi-circular support ring 10 and a rotatable support plate 13. The core mechanism utilizes the meshing transmission between the built-in bevel gear 12 and the inner gear rack 14 of the support plate 13 to achieve precise rotational adjustment of the support plate 13 along the sliding groove 11. When closed, it forms a complete circular structure with the support plates 13 interlocking, allowing for flexible adaptation to different patients' limb circumferences and effectively solving the problem of limited adaptability in traditional devices. Simultaneously, the flexible ring 22 added to the inner side of the support plate 13 tightly conforms to the limb surface, improving both adaptation stability and fit during wear. The adaptive support 2 possesses multi-dimensional flexible adjustment capabilities, and its core components... The support rod 3 adopts a combination structure of a spherical end face and a steering rod 17. The guide groove 16 opened on the spherical end face provides stable guidance for the steering rod 17, which can realize the flexible steering of the support rod 3 at multiple angles. One end of the straight rod 15 is threadedly connected to the connecting hole 19 of the adaptation ring 1 through the connector 18, and the other end is fixed to the support pad 5 through the threaded hole 20. At the same time, the surface groove 21 is fitted with the end face of the connecting rod 4 to ensure that the entire support structure remains stable after adjustment, which can adapt to the use needs of patients in different body positions. The airbag 6 system adopts a composite design of multi-area independent division and honeycomb soft plastic mesh 23. The internal area is divided into multiple areas according to a preset ratio. Each independent area is connected to the air pump 9 through a separate pipeline, which can realize differentiated pressure output in different areas to meet the needs of precise pressure treatment. The honeycomb soft plastic mesh 23 not only enhances the structural strength of the airbag 6, but also the flow holes 24 opened between the meshes can ensure smooth airflow inside the airbag 6, so that the pressure is evenly transmitted to the limb surface, avoiding excessively high or low local pressure, and improving the stability and safety of pressure treatment. By rotating the support plate 13, the gear rack 14 and the bevel gear 12 mesh and drive the support plate 13 to rotate along the sliding groove 11 and form a circular structure that fits the patient's limb with the adaptation ring 1. The flexible ring 22 fits the limb surface to enhance the fit.

[0033] like Figures 1-5As shown, the adaptation ring 1 includes a support ring 10, which is semi-circular in plan view and has an annular sliding groove 11 on its inner side. A bevel gear 12 is provided at the center of the inner wall of the sliding groove 11, and support plates 13 are provided on both sides of the inner wall of the sliding groove 11. The support plates 13 are semi-circular and rotate along the sliding groove 11 to both sides of the adaptation ring 1. A gear rack 14 is provided on the inner side of the support plate 13, and the gear rack 14 meshes with the bevel gear 12. The support rod 3 includes two straight rods 15. The end face of the straight rod 15 is spherical and has several guide grooves 16. The end faces of the two straight rods 15 with the guide grooves 16 are opposite each other and connected by a steering rod 17. The angle of the support rod 3 is adjusted by the steering rod 17. The position of the support pad 5 is fixed by the threaded connection between the straight rod 15 and the connecting hole 19 and the cooperation between the connecting rod 4 and the slot 21, so that the airbag 6 fits the preset part of the limb. After the controller 8 is activated, the air pump 9 precisely inflates different areas of the airbag 6 through independent pipelines. The airflow passes through the flow hole 24 and flows between the honeycomb soft plastic mesh 23 to achieve uniform pressure transmission. After the inflation and pressurization process is completed according to the preset program, the air pump 9 stops working and releases the gas in the airbag 6.

[0034] like Figures 1-7 As shown, the other end of the straight rod 15 is provided with a connector 18, and the top end of the adapting ring 1 is provided with a plurality of connecting holes 19 at equal intervals. The straight rod 15 is threadedly connected to the connecting holes 19. The surface of the straight rod 15 is provided with a threaded hole 20, which is used to connect with the support pad 5. The surface of the straight rod 15 is provided with a slot 21, which corresponds to each other and is fitted by the end face of the connecting rod 4. The inner wall of the support piece 13 is provided with a flexible ring 22. The support piece 13 rotates with the adapting ring 1 to form a complete circle by means of the sliding groove 11, and the support pieces 13 are interlocked by rotation. The inner wall of the airbag 6 is provided with a plurality of honeycomb-shaped soft plastic meshes 23. A flow hole 24 is provided between 23, and airflow is achieved through the flow hole 24. The device adopts a modular assembly design. The core components are reliably connected by means of threaded connection and slot 21. The assembly and disassembly process is convenient and efficient, and it is easy to maintain and replace later. At the same time, the flexible pad 7 on the outside of the adapting bracket 2 and the flexible ring 22 on the inside of the support plate 13 form a double flexible protection, which can effectively reduce friction and irritation when the device comes into contact with the skin, improve the comfort of long-term wear, and is suitable for scenarios that require long-term use, such as postoperative bed rest. The intermittent inflation and deflation process simulates the muscle pump effect, promotes venous blood return and avoids blood stasis, so as to achieve the purpose of preventing deep vein thrombosis.

[0035] Working Principle: Before use, the device rotates the support plate 13 to engage the gear rack 14 with the bevel gear 12, causing the support plate 13 to rotate along the sliding groove 11 and form a circular structure with the adaptation ring 1 to fit the patient's limb. The flexible ring 22 fits the limb surface to enhance the fit. The angle of the support rod 3 is adjusted by the steering rod 17. The position of the support pad 5 is fixed by the threaded connection between the straight rod 15 and the connecting hole 19 and the cooperation between the connecting rod 4 and the slot 21, so that the airbag 6 fits the preset part of the limb. After the controller 8 is started, the air pump 9 accurately inflates different areas of the airbag 6 through independent pipelines. The airflow flows through the flow hole 24 between the honeycomb soft plastic mesh 23 to achieve uniform pressure transmission. After the inflation and pressurization process is completed according to the preset program, the air pump 9 stops working and releases the gas in the airbag 6. The intermittent inflation and deflation process simulates the muscle pump effect, promotes venous blood return and avoids blood stasis, thereby achieving the purpose of preventing deep vein thrombosis.

[0036] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. An intermittent pneumatic compression device for the prevention of deep vein thrombosis, comprising an adaptation ring (1), characterized in that: The top of the adaptation ring (1) is provided with an adaptation bracket (2), which is composed of several sets of support rods (3). A connecting rod (4) is provided between the support rods (3). A support pad (5) is provided on one side of the adaptation bracket (2). Several airbags (6) are provided on one side of the support pad. A flexible pad (7) is sleeved on the outside of the adaptation bracket (2). The airbags (6) are divided into several areas of different sizes inside. A controller (8) is provided on the other side of the flexible pad (7). An air pump (9) is provided on one side of the controller (8).

2. The intermittent pneumatic pressurization device for deep vein thrombosis prevention according to claim 1, characterized in that: The air pump (9) is connected to each area of ​​the airbag (6) with a separate pipeline of different sizes.

3. The intermittent pneumatic pressurization device for deep vein thrombosis prevention according to claim 1, characterized in that: The adaptation ring (1) includes a support ring (10), which is semi-circular when viewed from above, and has an annular sliding groove (11) on its inner side. A bevel gear (12) is provided at the center of the inner wall of the sliding groove (11).

4. The intermittent pneumatic pressurization device for deep vein thrombosis prevention according to claim 3, characterized in that: Support plates (13) are provided on both sides of the inner wall of the sliding groove (11). The support plates (13) are semi-circular and rotate along the sliding groove (11) to both sides of the adaptation ring (1). A gear rack (14) is provided on the inner side of the support plate (13), and the gear rack (14) meshes with the bevel gear (12).

5. The intermittent pneumatic pressurization device for deep vein thrombosis prevention according to claim 1, characterized in that: The support rod (3) includes two straight rods (15). The end face of the straight rod (15) is spherical and has a number of guide grooves (16). The end faces of the two straight rods (15) with the guide grooves (16) are opposite each other and are connected by a steering rod (17).

6. The intermittent pneumatic pressurization device for deep vein thrombosis prevention according to claim 5, characterized in that: The other end of the straight rod (15) is provided with a connector (18), and the top end of the adapting ring (1) is provided with a plurality of connecting holes (19) at equal intervals. The straight rod (15) is threadedly connected to the connecting holes (19).

7. The intermittent pneumatic pressurization device for deep vein thrombosis prevention according to claim 6, characterized in that: The surface of the straight rod (15) is provided with a threaded hole (20), which is used to connect with the support pad (5). The surface of the straight rod (15) is provided with a slot (21), which corresponds to each other and is sleeved on the end face of the connecting rod (4).

8. The intermittent pneumatic pressurization device for deep vein thrombosis prevention according to claim 4, characterized in that: The inner wall of the support piece (13) is provided with a flexible ring (22). The support piece (13) rotates with the adaptation ring (1) through the sliding groove (11) to form a complete circle, and the support piece (13) engages with each other through rotation.

9. The intermittent pneumatic pressurization device for deep vein thrombosis prevention according to claim 1, characterized in that: The inner wall of the airbag (6) is provided with a number of honeycomb-shaped soft plastic meshes (23), and flow holes (24) are provided between the soft plastic meshes (23), and airflow is achieved by means of the flow holes (24).

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