Arteriovenous fistula pressure prevention device

Abstract

The application provides an arteriovenous fistula anti-pressure device, which comprises an anti-pressure assembly, a rotating assembly, a pressure bearing assembly and a fixing assembly. The anti-pressure assembly is used for wrapping an arm fistula surface and conducting external pressure. The rotating assembly is connected with the anti-pressure assembly and used for driving the anti-pressure assembly to rotate. The pressure bearing assembly is connected with the rotating assembly and used for dispersing external pressure from the anti-pressure assembly. The fixing assembly is arranged on the pressure bearing assembly and used for fixing the pressure bearing assembly on the arm. The anti-pressure device can protect the arteriovenous fistula and reduce the risk of fistula occlusion caused by direct compression after the patient wears the device.

Description

Technical Field

[0001] This utility model relates to the field of medical device technology, specifically to an arteriovenous fistula anti-pressure device. Background Technology

[0002] Arteriovenous fistula is a vascular surgery primarily used for patients requiring long-term hemodialysis to provide a stable vascular access. The most common sites for arteriovenous fistula are the radial artery and cephalic vein at the wrist. Some patients are prone to fistula occlusion for a period of time after the surgery. Compression of the fistula limb may occur during activity or sleep, wearing tight-fitting clothing, or procedures such as measuring blood pressure, drawing blood, or administering intravenous fluids on the fistula side, which can compress the fistula, impairing blood circulation and potentially leading to thrombosis. Utility Model Content

[0003] This invention was developed to solve the above-mentioned problems, and its purpose is to provide an arteriovenous fistula anti-pressure device.

[0004] This utility model provides an arteriovenous fistula anti-pressure device, characterized by comprising: an anti-pressure component for wrapping the fistula surface of the arm and transmitting external pressure; a rotating component connected to the anti-pressure component for driving the anti-pressure component to rotate; a pressure-bearing component connected to the rotating component for dispersing external pressure from the anti-pressure component; and a fixing component disposed on the pressure-bearing component for fixing the pressure-bearing component to the arm; wherein the anti-pressure component is closably connected to the pressure-bearing component via the rotating component.

[0005] The arteriovenous fistula anti-pressure device provided by this utility model may also have the following feature: wherein the anti-pressure component is an arc-shaped surface with a preset arc.

[0006] The arteriovenous fistula anti-pressure device provided by this utility model may also have the following features: wherein the pressure-bearing component includes: a first arc surface connected to the rotating component, used to disperse the pressure from the anti-pressure component when the anti-pressure component is closed; a first base plate connected to the first arc surface, used to wrap the arm; a second arc surface, used to disperse the pressure from the anti-pressure component when the anti-pressure component is closed; and a second base plate connected to the first base plate and the second arc surface respectively, used to wrap the arm.

[0007] The arteriovenous fistula anti-pressure device provided by this utility model may also have the following features: the second base plate is divided into two layers, and the first base plate is stuck between the two layers of the second base plate by friction. The position of the first base plate stuck between the two layers of the second base plate is adjusted according to the thickness of the arm.

[0008] The arteriovenous fistula anti-pressure device provided by this utility model may also have the following features: a first positioning hole and a second positioning hole are provided on the second arc surface, and a third positioning hole and a fourth positioning hole are provided on the second base plate; the fixing component includes: a first fixing strap, disposed on the first positioning hole, for fixing the anti-pressure component and the pressure-bearing component to the arm by wrapping; a second fixing strap, disposed on the second positioning hole, for fixing the anti-pressure component and the pressure-bearing component to the arm by wrapping; a third fixing strap, disposed on the third positioning hole, for fixing the anti-pressure component and the pressure-bearing component to the arm; and a fourth fixing strap, disposed on the fourth positioning hole, for fixing the anti-pressure component and the pressure-bearing component to the arm.

[0009] The arteriovenous fistula anti-pressure device provided by this utility model may also have the following features: the width range of the first fixing strap, the second fixing strap, the third fixing strap, and the fourth fixing strap is 30mm to 40mm.

[0010] The arteriovenous fistula anti-pressure device provided by this utility model may also include a buffer pad, which is disposed on the inner side of the anti-pressure component and the pressure-bearing component in contact with the arm, to increase the comfort of the arm.

[0011] The arteriovenous fistula anti-pressure device provided by this utility model may also have the following feature: the cushioning pad is made of memory foam or latex.

[0012] The arteriovenous fistula anti-pressure device provided by this utility model may also have the following feature: the anti-pressure component and the pressure-bearing component are made of rigid plastic.

[0013] The arteriovenous fistula anti-pressure device provided by this utility model may also have the following feature: wherein the anti-pressure component is provided with a preset number of vent holes.

[0014] Functions and effects of utility models

[0015] According to the present invention, the device includes: an anti-pressure component for wrapping the stoma surface of the arm and transmitting external pressure; a rotating component connected to the anti-pressure component for driving the anti-pressure component to rotate; a pressure-bearing component connected to the rotating component for dispersing external pressure from the anti-pressure component; and a fixing component disposed on the pressure-bearing component for fixing the pressure-bearing component to the arm. The anti-pressure component is closably connected to the pressure-bearing component via the rotating component. Therefore, the arteriovenous stoma anti-pressure device of the present invention can protect the arteriovenous stoma and reduce the risk of stoma occlusion caused by direct pressure after the patient wears it. Attached Figure Description

[0016] Figure 1 This is a perspective view of the arteriovenous fistula anti-pressure device in an embodiment of this utility model.

[0017] Figure 2 This is a three-dimensional perspective view of the arteriovenous fistula anti-pressure device in an embodiment of this utility model.

[0018] Figure 3 This is a front view of the arteriovenous fistula anti-pressure device in an embodiment of this utility model.

[0019] Figure 4 This is a left view of the arteriovenous fistula anti-pressure device in an embodiment of this utility model.

[0020] Figure 5 This is a schematic diagram showing the connection between the first base plate and the second base plate of the arteriovenous fistula anti-pressure device in an embodiment of this utility model.

[0021] Figure 6 This is a schematic diagram of another fixing component of the arteriovenous fistula anti-pressure device in an embodiment of this utility model. Detailed Implementation

[0022] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral 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 application according to the specific circumstances.

[0023] To make the technical means, creative features, objectives and effects of this utility model easy to understand, the following embodiments, in conjunction with the accompanying drawings, will specifically describe the arteriovenous fistula anti-pressure device of this utility model.

[0024] This invention was developed to solve the above-mentioned problems, and its purpose is to provide an arteriovenous fistula anti-pressure device.

[0025] Example

[0026] Figure 1 This is a perspective view of the arteriovenous fistula anti-pressure device in an embodiment of this utility model.

[0027] Figure 2 This is a three-dimensional perspective view of the arteriovenous fistula anti-pressure device in an embodiment of this utility model.

[0028] Figure 3 This is a front view of the arteriovenous fistula anti-pressure device in an embodiment of this utility model.

[0029] Figure 4 This is a left view of the arteriovenous fistula anti-pressure device in an embodiment of this utility model.

[0030] like Figure 1 , Figure 2 , Figure 3 and Figure 4 As shown, this embodiment provides an arteriovenous fistula anti-pressure device 100, including: anti-pressure component 1, rotating component 2, pressure-bearing component 3, fixing component 4, and buffer pad 5.

[0031] Pressure-resistant component 1 is used to wrap the stoma surface of the arm and transmit external pressure.

[0032] The pressure-resistant component has a curved surface with a preset curvature that matches the arm's surface. The pressure-resistant component is made of rigid plastic. It has a preset number of ventilation holes 11.

[0033] Rotating component 2, connected to anti-pressure component 1, is used to drive anti-pressure component 1 to rotate. In this embodiment, rotating component 2 is a rod-shaped rotating shaft.

[0034] Figure 5 This is a schematic diagram showing the connection between the first base plate and the second base plate of the arteriovenous fistula anti-pressure device in an embodiment of this utility model.

[0035] like Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 5 As shown, the pressure-bearing component 3 is connected to the rotating component 2 and is used to disperse external pressure from the pressure-resistant component 1. The pressure-resistant component 1 is movably connected to the pressure-bearing component 3 via the rotating component 2.

[0036] The pressure-bearing component 3 includes: a first arc surface 31, a first base plate 32, a second arc surface 33, and a second base plate 34.

[0037] The first arc surface 31 is connected to the rotating component 2 and is used to disperse the pressure from the anti-pressure component 1 when the anti-pressure component 1 is closed.

[0038] The first base plate 32 is connected to the first arc surface 31 and is used to wrap the arm.

[0039] The second arc surface 33 is used to disperse the pressure from the pressure-resistant assembly 1 when the pressure-resistant assembly 1 is closed.

[0040] The second base plate 34 is connected to the first base plate 32 and the second arc surface 33 respectively, and is used to wrap the arm.

[0041] The second base plate 34 consists of two layers. The first base plate 32 is engaged between the two layers of the second base plate 34 by friction. The position of the first base plate 32 engaged between the two layers of the second base plate 34 can be adjusted according to the thickness of the arm. The second base plate 34 and the first base plate 32 can also be provided with serrations on their contact surfaces to achieve mutual engagement and fixation.

[0042] In this embodiment, the first arc surface 31, the first base plate 32, the second arc surface 33, and the second base plate 34 are all made of rigid plastic.

[0043] When the pressure-resistant component 1 is in a closed state and is subjected to pressure, the first arc surface 31 and the second arc surface 33 disperse the pressure on the pressure-resistant component 1, preventing the arteriovenous fistula from being subjected to pressure.

[0044] A fixing component 4, disposed on the pressure-bearing component 3, is used to fix the pressure-bearing component 3 to the arm. A first positioning hole 35 and a second positioning hole 36 are also provided on the second arc surface, and a third positioning hole 37 and a fourth positioning hole 38 are also provided on the second base plate. The fixing component 4 includes:

[0045] The first fixing strap 41 is disposed on the first positioning hole 35 and is used to fix the anti-pressure component 1 and the pressure-bearing component 3 to the arm by wrapping.

[0046] The second fixing strap 42 is disposed on the first positioning hole 36 and is used to fix the anti-pressure component 1 and the pressure-bearing component 3 to the arm by wrapping.

[0047] The third fixing strap 43 is disposed on the first positioning hole 37 and is used to fix the anti-pressure component and the pressure-bearing component to the arm.

[0048] The fourth fixing strap 44 is provided on the first positioning hole 38 and is used to fix the anti-pressure component 1 and the pressure-bearing component 3 to the arm.

[0049] The first fixing strap 41 and the second fixing strap 42 together wrap around the outside of the anti-pressure component 1 and the pressure-bearing component 2 to prevent the anti-pressure component 1 and the pressure-bearing component 3 from swaying left and right or becoming loose. The third fixing strap 43 is wrapped around the patient's fingers, and the fourth fixing strap 44 is wrapped around the patient's shoulder. The number of wrappings is determined according to the size of the patient's arm and shoulder. After wrapping, the straps are tied and fixed to the arm. The third fixing strap 43 and the fourth fixing strap 44 work together to prevent the anti-pressure component 1 and the pressure-bearing component 3 from swaying up and down.

[0050] The fixing strap can be one or more.

[0051] Figure 6 This is a schematic diagram of another fixing component of the arteriovenous fistula anti-pressure device in an embodiment of this utility model.

[0052] like Figure 6As shown, in this embodiment, the outer sides of the anti-pressure component 1 and the pressure-bearing component 3 are also provided with detachable fabric fasteners 45. The detachable fabric fasteners are further provided with a first surface 451 with tiny hook-like structures and a second surface 452 with a fluffy loop-like structure. When pressed together, they can achieve a secure but repeatedly separable connection to prevent the anti-pressure component 1 and the pressure-bearing component 3 from swaying left and right. The width of the detachable fabric fastener 5 is greater than or equal to the width of the anti-pressure component 1 and the pressure-bearing component 3. The widths of the first surface 451 and the second surface 452 can be set to different specifications to match the patient's arm size.

[0053] The width of the first fixation strap 41, the second fixation strap 42, the third fixation strap 43, and the fourth fixation strap 44 ranges from 30mm to 50mm to prevent the fixation straps from being too thin and causing the patient to feel constricted or uncomfortable.

[0054] A cushioning pad 5 is positioned between the anti-pressure component 1, the pressure-bearing component 3, and the arm to increase arm comfort. The area of ​​the cushioning pad 5 is determined based on the areas of the anti-pressure component 1 and the pressure-bearing component 3.

[0055] Among them, the cushioning pad 5 is made of memory foam or latex.

[0056] When wearing the device, first open the anti-pressure component, insert the cushioning pad, then place the patient's arm in the device and cover it with the anti-pressure component. The anti-pressure component covers the stoma surface on the arm. Wrap the first and second fixation straps around the patient's arm and tie them in a knot to prevent swaying from side to side. Wrap the third fixation strap around the patient's fingers and tie it in a knot to secure it. Wrap the fourth fixation strap around the patient's shoulder and tie it in a knot to secure it, preventing up and down movement.

[0057] The role and effect of the embodiments

[0058] In this embodiment, the arteriovenous fistula anti-pressure device includes: an anti-pressure component for wrapping the fistula surface of the arm and transmitting external pressure; a rotating component connected to the anti-pressure component for driving the anti-pressure component to rotate; a pressure-bearing component connected to the rotating component for dispersing external pressure from the anti-pressure component; and a fixing component disposed on the pressure-bearing component for fixing the pressure-bearing component to the arm. The anti-pressure component is closably connected to the pressure-bearing component via the rotating component. Therefore, the arteriovenous fistula anti-pressure device of this invention can protect the arteriovenous fistula and reduce the risk of fistula occlusion caused by direct pressure after the patient wears it.

[0059] This embodiment also divides the second base plate into two layers, and adjusts the depth of the first base plate between the two layers of the second base plate to match the arm size of different patients.

[0060] In this embodiment, the size of the fixation strap can be set according to actual needs, and can match patients with different body shapes and arm sizes.

[0061] This embodiment also includes a cushioning pad between the anti-pressure component and the pressure-bearing component and the arm to increase patient arm comfort.

[0062] In this embodiment, both the pressure-resistant component and the pressure-bearing component are made of rigid plastic, which is used to disperse external pressure and is not easily deformed.

[0063] The pressure-resistant component in this implementation is also equipped with a preset number of ventilation holes to keep the patient's arm dry.

[0064] Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A pressure-prevention device for arteriovenous fistulas, characterized in that, include: Pressure-resistant components are used to wrap the stoma site on the arm and transmit external pressure. A rotating component, connected to the anti-pressure component, is used to drive the anti-pressure component to rotate; A pressure-bearing component, connected to the rotating component, is used to disperse external pressure from the pressure-resistant component; A fixing component, disposed on the pressure-bearing component, is used to fix the pressure-bearing component to the arm; The anti-pressure component is detachably connected to the pressure-bearing component via the rotating component.

2. The arteriovenous fistula anti-pressure device according to claim 1, characterized in that: in, The pressure-resistant component has an arc-shaped surface with a preset arc.

3. The arteriovenous fistula anti-pressure device according to claim 1, Its features are: in, The pressure-bearing component includes: The first arc surface is connected to the rotating assembly and is used to disperse the pressure from the anti-pressure assembly when the anti-pressure assembly is closed; The first base plate, connected to the first curved surface, is used to wrap the arm; The second arc surface is used to disperse the pressure from the anti-pressure assembly when the anti-pressure assembly is closed; The second base plate is connected to both the first base plate and the second arc surface, and is used to wrap the arm.

4. The arteriovenous fistula anti-pressure device according to claim 3, characterized in that, Also includes: The second base plate is divided into two layers. The first base plate is held between the two layers of the second base plate by friction. The position of the first base plate held between the two layers of the second base plate is adjusted according to the thickness of the arm.

5. The arteriovenous fistula anti-pressure device according to claim 3, Its features are: in, The second arc surface is also provided with a first positioning hole and a second positioning hole, and the second base plate is also provided with a third positioning hole and a fourth positioning hole; The fixing component includes: A first fixing strap is provided on the first positioning hole for securing the anti-pressure component and the pressure-bearing component to the arm by wrapping them together. The second fixing strap is provided on the second positioning hole and is used to fix the anti-pressure component and the pressure-bearing component to the arm by wrapping them together. The third fixing strap is provided on the third positioning hole and is used to fix the anti-pressure component and the pressure-bearing component to the arm; A fourth fixing strap is provided on the fourth positioning hole for fixing the anti-pressure component and the pressure-bearing component to the arm.

6. The arteriovenous fistula anti-pressure device according to claim 5, characterized in that, Also includes: The widths of the first fixing strap, the second fixing strap, the third fixing strap, and the fourth fixing strap range from 30mm to 50mm.

7. The arteriovenous fistula anti-pressure device according to claim 1, characterized in that, Also includes: A cushioning pad is disposed between the anti-pressure component and the pressure-bearing component and the arm to increase arm comfort.

8. The arteriovenous fistula anti-pressure device according to claim 7, characterized in that, in, The cushioning pad is made of memory foam or latex.

9. The arteriovenous fistula anti-pressure device according to claim 1, characterized in that, in, The pressure-resistant component and the pressure-bearing component are made of rigid plastic.

10. The arteriovenous fistula anti-pressure device according to claim 1, characterized in that, in, The pressure-resistant component is provided with a preset number of ventilation holes.

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