Electric series nickel-titanium alloy wire contraction pressurizing device

Abstract

The invention discloses an electrically-serially-connected nickel-titanium alloy wire shrinking and pressurizing device. The device comprises a device main body, wherein the device main body comprises covering cloth, sewing threads and nickel-titanium alloy wires; the two sets of fixing ends are located at the two ends of the contraction pressurizing device, each set of fixing ends is provided with a plurality of ceramic pieces at intervals, the single nickel-titanium alloy wire is sequentially wound on the ceramic pieces at the two ends in a back-and-forth bending mode to form an S-shaped winding structure, and the two-side covering cloth is integrally laid on the upper end faces and the lower end faces of the nickel-titanium alloy wire and the ceramic pieces. The nickel-titanium alloy wires are sewn and fixed on the covering cloth by adopting sewing threads; the two ends of a single nickel-titanium alloy wire extend out of the two fixed ends to form nickel-titanium alloy wire ends, the nickel-titanium alloy wire ends at the two ends are wound around the aluminum bars respectively, and the nickel-titanium alloy wire ends and the wound aluminum bars are fastened through soldering tin to form the nickel-titanium alloy wire shrinkage pressurizing device in an overall electric series connection mode. And the end of the nickel-titanium alloy wire is wound to extend out of the end part of the outer side of the aluminum bar and is communicated with an external lead for performing power-on control on the contraction pressurizing device.

Description

Technical Field

[0001] This invention relates to, but is not limited to, the fields of personal protective equipment, medical devices and intelligent robots, and particularly to an electrically connected nickel-titanium alloy wire shrinkage and pressure device. Background Technology

[0002] Nickel-titanium alloy is a novel shape memory metallic material that exhibits shrinkage properties under electrothermal actuation. This shrinkage is achieved by fixing both ends of a nickel-titanium alloy wire, applying electricity to generate heat, and causing the wire to shrink and shorten under the influence of heat, thus generating an inward pulling force and applying pressure to the target. By adjusting the current to control the rate of temperature increase inside the nickel-titanium alloy wire, the shrinkage deformation and deformation speed can be controlled, thereby adjusting the shrinkage pressure and achieving precise control.

[0003] Based on the shrinkage properties of nickel-titanium alloy wire under electro-thermal drive, its application in winding shrinkage scenarios has the following problems: a single continuous nickel-titanium alloy wire is prone to forming dead folds during the round trip, and "hot spots" are generated after energization. Excessive temperature can easily damage the wound object, thereby reducing the service life of the nickel-titanium alloy wire. In addition, the ends of the nickel-titanium alloy wire are not easy to fix, and end slippage will affect the overall shrinkage effect of the nickel-titanium alloy wire. Summary of the Invention

[0004] The purpose of this invention is to provide an electrically connected series-connected nickel-titanium alloy wire shrinkage and pressure device to solve the problems that when nickel-titanium alloy wire is applied to winding and shrinking scenarios, single continuous nickel-titanium alloy wires are prone to dead folds during the round trip, excessively high energized temperature can damage the wound object, thereby reducing the service life of the nickel-titanium alloy wire, and end slippage can affect the overall shrinkage effect of the nickel-titanium alloy wire.

[0005] The technical solution of the present invention is as follows: The present invention provides an electrically connected nickel-titanium alloy wire shrinkage and pressure device, comprising: device body 1, fixed end 3, and aluminum rod 9; The main body 1 of the device includes a cover cloth 4, sewing thread 5, and nickel-titanium alloy wire 6; two sets of fixed ends 3 are located at both ends of the shrink-pressurization device, and each set of fixed ends 3 is provided with multiple ceramic pieces 7 at intervals. A single nickel-titanium alloy wire 6 is wound around the ceramic pieces 7 at both ends in a back-and-forth bending manner to form an S-shaped winding structure. The cover cloth 4 on both sides is laid on the upper and lower ends of the nickel-titanium alloy wire 6 and the ceramic pieces 7, and the nickel-titanium alloy wire 6 is sewn and fixed to the cover cloth 4 using sewing thread 5. The single nickel-titanium alloy wire 6 has two ends extending out of the two fixed ends 3 to form nickel-titanium alloy wire ends 10. The nickel-titanium alloy wire ends 10 at both ends are respectively wound around an aluminum rod 9, and the nickel-titanium alloy wire ends 10 and the wound aluminum rod 9 are fastened together by solder to form an integrally electrically connected nickel-titanium alloy wire shrink-pressurization device. The end of the nickel-titanium alloy wire end 10 that extends out of the aluminum rod 9 is connected to an external wire for energizing and controlling the shrink-pressurization device.

[0006] Optionally, in the electrically connected nickel-titanium alloy wire shrinking and pressurizing device as described above, the reciprocating bending area of ​​the nickel-titanium alloy wire 6 is fixed by a ceramic sheet 7.

[0007] Optionally, in the electrically connected nickel-titanium alloy wire shrink-pressurization device as described above, The ceramic sheet 7 is configured as a disc structure, and an annular groove is provided at the waist of the disc structure to wind the reciprocating bending area of ​​the nickel-titanium alloy wire 6 within the annular groove, so as to avoid the nickel-titanium alloy wire from being bent into dead folds.

[0008] Optionally, in the electrically connected nickel-titanium alloy wire shrink-pressurization device as described above, Each set of fixed ends 3 also includes: a strong band 8 sleeved on the outside of each ceramic piece 7 in the set of fixed ends 3, and a sewing thread 5 is used to fix the strong band 8 along the ceramic piece 7 to prevent the nickel-titanium alloy wire 6 from coming out of the ceramic piece 7.

[0009] Optionally, the electrically connected nickel-titanium alloy wire shrink-pressurization device as described above also includes: a hook and loop fastener 11; The hook and loop fastener 11 is sewn onto the back of the shrink-pressurization device, specifically onto the fixed end 3 and the main body 1 of the device, and the width of the hook and loop fastener 11 is greater than the width of the fixed end 3.

[0010] Optionally, the electrically connected nickel-titanium alloy wire shrinking and pressurizing device as described above also includes: a hook and loop fastener 2; The hook and loop fastener 2 is sewn onto the fabric of the part of the body to be pressurized. When the compression and pressurization device is wrapped around the part of the body to be pressurized, the hook and loop fastener 11 on the back of the compression and pressurization device is overlapped and fixed to prevent the fixed end from slipping.

[0011] Optionally, in the electrically connected nickel-titanium alloy wire shrink-pressurization device as described above, Both ends of the aluminum rod 9 are configured with a C-shaped bending structure, and the aluminum rod 9 with the end of the nickel-titanium alloy wire 6 is positioned close to the fixed end 3, so that the effective shrinkage area of ​​the nickel-titanium alloy wire 6 after being energized and shrinking is located within the area of ​​the device body 1.

[0012] Optionally, in the electrically connected nickel-titanium alloy wire shrink-pressurization device as described above, The compression and pressurization device is wound around the part of the human body to be pressurized by more than or equal to one full turn, and the distance H between each turn after the device body 1 is wound is consistent with the winding spacing of the nickel-titanium alloy wire 6 inside the device body 1. The fixed end 3 is fixed to the front or side of the human body part.

[0013] The beneficial effects of this invention are as follows: This invention provides an electrically connected series nickel-titanium alloy wire shrink-pressurization device. The main body 1 of the device includes a cover cloth 4, sewing thread 5, and nickel-titanium alloy wire 6. Two sets of fixed ends 3 are located at both ends of the shrink-pressurization device. Each set of fixed ends 3 is spaced apart with multiple ceramic plates 7. A single nickel-titanium alloy wire 6 is wound sequentially around the ceramic plates 7 at both ends in a reciprocating bending manner to form an S-shaped winding structure. The cover cloth 4 on both sides is laid on the upper and lower ends of the nickel-titanium alloy wire 6 and the ceramic plates 7, and the nickel-titanium alloy wire 6 is sewn and fixed to the cover cloth 4 using sewing thread 5. The two ends of the single nickel-titanium alloy wire 6 extend out of the two fixed ends 3 to form nickel-titanium alloy wire ends 10, and the nickel-titanium alloy wire ends 10 at both ends are respectively wound around an aluminum rod 9. The nickel-titanium alloy wire ends 10 and the wound aluminum rod 9 are fastened with solder to form an overall electrically connected series nickel-titanium alloy wire shrink-pressurization device. The shrink-pressurization device provided by the embodiments of this invention has the following beneficial effects: (1) The nickel-titanium alloy wire 6 is the main component of the shrink pressure device. It is located between the double-layer cover cloth in the main body 1 of the device. The outer side is sewn with sewing thread 5 close to the edge of the nickel-titanium alloy wire 6 to ensure that the spacing of the nickel-titanium alloy wire is uniform and meets the set requirements.

[0014] (2) The nickel-titanium alloy wire 6 is the main component of the compression and pressurization device. The part of the nickel-titanium alloy wire 6 that bends back and forth is inside the fixed end 3. The bending part is controlled by a grooved ceramic sheet 7 to prevent the nickel-titanium alloy wire from being bent into dead folds. The nickel-titanium alloy wire and the ceramic sheet are wrapped with a strong belt, and the outside is fixed along the ceramic sheet with sewing thread 5 to prevent the nickel-titanium alloy wire from coming out of the ceramic sheet.

[0015] (3) The snap fastener 11 is sewn on the back of the shrink pressure device, specifically at the position where the main body 1 and the fixed end 3 are combined; the width of the snap fastener 11 should be greater than the width of the fixed end 3, so as to overlap and fix it with the corresponding part of the clothing surface and the snap fastener hook 2 to prevent the fixed end from slipping.

[0016] (4) The ends of the nickel-titanium alloy wire 6 extend beyond the two fixed ends 3 and are wound around the aluminum rod 9. The joints between the ends of the nickel-titanium alloy wire 6 and the aluminum rod 9 are soldered to prevent the nickel-titanium alloy wire 6 from slipping. The aluminum rod 9 is positioned outside the fixed end 3 and close to the fixed end 3 to prevent ineffective contraction when energized. If the aluminum rod 9 is far from the fixed end 3, there will be a long nickel-titanium alloy wire 6 between the aluminum rod 9 and the fixed end 3. After the nickel-titanium alloy wire 6 is energized and contracted, the contraction area between the aluminum rod 9 and the fixed end 3 will be ineffective contraction. The remaining ends of the nickel-titanium alloy wire 6 are connected to the external wires for energization control.

[0017] The nickel-titanium alloy wire compression and pressurization device proposed in this invention solves the problems of dead wrinkles and unstable ends that easily occur when a single continuous nickel-titanium alloy wire is wound around the human body surface. It can generate effective pressure, is highly operable, reusable, and has high practical value. This compression and pressurization device can be used in anti-load compensation surface pressure equipment, medical devices, intelligent robots, and other fields, with nickel-titanium alloy wire as the main actuating unit. Attached Figure Description

[0018] The accompanying drawings are provided to further understand the technical solutions of the present invention and constitute a part of the specification. They are used together with the embodiments of this application to explain the technical solutions of the present invention and do not constitute a limitation on the technical solutions of the present invention.

[0019] Figure 1 A top view of an electrically connected nickel-titanium alloy wire shrinkage and pressure device is provided for this invention; Figure 2 for Figure 1 A cross-sectional view of the electrically connected nickel-titanium alloy wire shrinkage and pressure device provided in the embodiment shown; Figure 3 for Figure 1 A bottom view of the electrically connected nickel-titanium alloy wire shrinkage and pressure device provided in the embodiment shown; Figure 4 for Figure 1 The illustrated embodiment provides a schematic diagram of an application scenario of the electrically connected nickel-titanium alloy wire compression and pressurization device in the human leg under pressure.

[0020] Explanation of reference numerals in the attached figures: 1. Main body of the device; 2. Hook and loop fastener; 3. Fixing end; 4. Cover cloth; 5. Sewing thread; 6. Nickel-titanium alloy wire; 7. Ceramic sheet; 8. Strong belt; 9. Aluminum rod; 10. Nickel-titanium alloy wire end; 11. Hook and loop fastener with fleece. Detailed Implementation

[0021] To make the objectives, technical solutions, and advantages of the present invention clearer, the embodiments of the present invention will be described in detail below with reference to the accompanying drawings. It should be noted that, unless otherwise specified, the embodiments and features described in this application can be arbitrarily combined with each other.

[0022] As explained in the background section, nickel-titanium alloy wire has shrinkage properties under electro-thermal drive. Considering the overload conditions of aircraft maneuvering, the designers of this invention use nickel-titanium alloy wire wrapped around the chest, abdomen, legs, and other parts of the human body to shrink and compress, which can prevent organ displacement, slow down the speed of blood flow to the lower limbs, achieve the purpose of anti-G, and achieve the same effect as traditional anti-G clothing.

[0023] A nickel-titanium alloy wire is used to form a circular winding around the human body to achieve better contraction and pressure. Compared to parallel wiring, the series wiring structure can generate more heat at a lower voltage, achieving contraction more quickly. A nickel-titanium alloy wire device structure needs to be invented: using a continuous series-connected nickel-titanium alloy wire to form a circular winding around the human body. However, the problems are: a single continuous nickel-titanium alloy wire is prone to forming dead folds during the reciprocating motion, generating "hot spots" after energization, and excessively high temperatures can easily cause injury to the human body and reduce the lifespan of the nickel-titanium alloy wire; the nickel-titanium alloy wire is a smooth metal filament, and the end is not easy to fix, and end slippage will affect the overall contraction effect of the nickel-titanium alloy wire. Therefore, the nickel-titanium alloy wire device structure should meet the following requirements: the single continuous nickel-titanium alloy wire bends smoothly at the reciprocating part; the end is firmly and stably fixed relative to the device itself and the object being acted upon, without slippage during operation.

[0024] To address the aforementioned problems, this invention provides an electrically connected nickel-titanium alloy wire contraction and pressure device. This contraction and pressure device is a device for applying pressure to the human body surface. Specifically, it is a contraction-type pressure device with nickel-titanium alloy wire as the main functional component, which can achieve the binding and pressure of columnar entities.

[0025] The present invention provides the following specific embodiments, which can be combined with each other. For the same or similar concepts or processes, they may not be described again in some embodiments.

[0026] Figure 1 A top view of an electrically connected nickel-titanium alloy wire shrinkage and pressure device is provided for this invention; Figure 2 for Figure 1 A cross-sectional view of the electrically connected nickel-titanium alloy wire shrinkage and pressure device provided in the embodiment shown; Figure 3 for Figure 1 A bottom view of the electrically connected nickel-titanium alloy wire shrinkage and pressure device provided in the illustrated embodiment. (Refer to...) Figures 1 to 3 As shown, the electrically connected nickel-titanium alloy wire shrinkage and pressure device provided by the present invention includes: device body 1, fixed end 3, and aluminum rod 9.

[0027] The main body 1 of the device in this embodiment of the invention includes a cover cloth 4, sewing thread 5, and nickel-titanium alloy wire 6; two sets of fixed ends 3 are located at both ends of the shrink-pressurization device, and each set of fixed ends 3 is provided with multiple ceramic pieces 7 at intervals. A single nickel-titanium alloy wire 6 is wound around the ceramic pieces 7 at both ends in a back-and-forth bending manner to form an S-shaped winding structure. The cover cloth 4 on both sides is laid on the upper and lower end faces of the nickel-titanium alloy wire 6 and the ceramic pieces 7, and the nickel-titanium alloy wire 6 is sewn and fixed to the cover cloth 4 by sewing thread 5.

[0028] In this embodiment of the invention, the two ends of a single nickel-titanium alloy wire 6 extend out to the two fixed ends 3 to form nickel-titanium alloy wire ends 10, and the nickel-titanium alloy wire ends 10 at both ends are respectively wound around an aluminum rod 9, and the nickel-titanium alloy wire ends 10 and the wound aluminum rod 9 are fastened together by solder to form an integrally electrically connected nickel-titanium alloy wire shrink-pressurization device; the end of the nickel-titanium alloy wire end 10 that extends out of the aluminum rod 9 is connected to an external wire for power control of the shrink-pressurization device.

[0029] In one implementation of this invention, such as Figure 1 As shown, the reciprocating bending area of ​​the nickel-titanium alloy wire 6 is fixed by the ceramic sheet 7.

[0030] In one implementation of this invention, such as Figure 1 and Figure 2 As shown, the ceramic sheet 7 is configured as a disc structure, and an annular groove is provided on the waist of the disc structure to wind the reciprocating bending area of ​​the nickel-titanium alloy wire 6 within the annular groove, so as to avoid the nickel-titanium alloy wire from being bent into dead folds.

[0031] In one implementation of this invention, such as Figure 1 and Figure 2 As shown, each set of fixed ends 3 also includes: a strong band 8 sleeved on the outside of each ceramic piece 7 in the set of fixed ends 3, and a sewing thread 5 is used to fix it along the ceramic piece 7 on the strong band 8 to prevent the nickel-titanium alloy wire 6 from coming out of the ceramic piece 7.

[0032] In one implementation of this invention, such as Figure 3 As shown, the electrically connected nickel-titanium alloy wire shrinkage and pressure device also includes: hook and loop fastener 11.

[0033] In this implementation, the hook and loop fastener 11 is sewn onto the back of the shrink-pressurization device, specifically onto the fixed end 3 and the device body 1, and the width of the hook and loop fastener 11 is greater than the width of the fixed end 3.

[0034] In one implementation of this invention, such as Figure 4The diagram shows the application of an electrically connected nickel-titanium alloy wire retraction and pressurization device to the human leg under pressure; the electrically connected nickel-titanium alloy wire retraction and pressurization device also includes: a buckle hook 2.

[0035] like Figure 4 As shown, the hook and loop fastener 2 is sewn onto the fabric of the part of the body to be pressurized. When the compression and pressurization device is wrapped around the part of the body to be pressurized, the hook and loop fastener 2 is connected and fixed to the hook and loop fastener 11 on the back of the compression and pressurization device to prevent the fixed end from slipping.

[0036] Furthermore, the number of turns of the compression and pressurization device around the part of the human body to be pressurized is greater than or equal to one full turn, and the distance H between each turn after the device body 1 is wound is consistent with the winding spacing of the nickel-titanium alloy wire 6 inside the device body 1, and the fixed end 3 is fixed to the front or side of the human body part.

[0037] In one implementation of an embodiment of the present invention, referring to... Figures 1 to 3 As shown, both ends of the aluminum rod 9 are configured with a C-shaped bending structure, and the aluminum rod 9 with the end of the nickel-titanium alloy wire 6 is positioned close to the fixed end 3, so that the effective shrinkage area of ​​the nickel-titanium alloy wire 6 after being energized and shrinking is located within the area of ​​the device body 1.

[0038] The electrically connected nickel-titanium alloy wire shrink-pressurization device provided in this embodiment of the invention comprises a main body 1 including a cover cloth 4, sewing thread 5, and nickel-titanium alloy wire 6. Two sets of fixed ends 3 are located at both ends of the shrink-pressurization device. Each set of fixed ends 3 is spaced apart with multiple ceramic plates 7. A single nickel-titanium alloy wire 6 is wound sequentially around the ceramic plates 7 at both ends in a reciprocating bending manner to form an S-shaped winding structure. The cover cloth 4 on both sides is laid on the upper and lower ends of the nickel-titanium alloy wire 6 and the ceramic plates 7, and the nickel-titanium alloy wire 6 is sewn and fixed to the cover cloth 4 using sewing thread 5. The two ends of the single nickel-titanium alloy wire 6 extend out of the two fixed ends 3 to form nickel-titanium alloy wire ends 10, and the nickel-titanium alloy wire ends 10 at both ends are wound around an aluminum rod 9. The nickel-titanium alloy wire ends 10 and the wound aluminum rod 9 are fastened with solder to form an overall electrically connected nickel-titanium alloy wire shrink-pressurization device. The shrink-pressurization device provided in this embodiment of the invention has the following beneficial effects: (1) The nickel-titanium alloy wire 6 is the main component of the shrink pressure device. It is located between the double-layer cover cloth in the main body 1 of the device. The outer side is sewn with sewing thread 5 close to the edge of the nickel-titanium alloy wire 6 to ensure that the spacing of the nickel-titanium alloy wire is uniform and meets the set requirements.

[0039] (2) The nickel-titanium alloy wire 6 is the main component of the compression and pressurization device. The part of the nickel-titanium alloy wire 6 that bends back and forth is inside the fixed end 3. The bending part is controlled by a grooved ceramic sheet 7 to prevent the nickel-titanium alloy wire from being bent into dead folds. The nickel-titanium alloy wire and the ceramic sheet are wrapped with a strong belt, and the outside is fixed along the ceramic sheet with sewing thread 5 to prevent the nickel-titanium alloy wire from coming out of the ceramic sheet.

[0040] (3) The snap fastener 11 is sewn on the back of the shrink pressure device, specifically at the position where the main body 1 and the fixed end 3 are combined; the width of the snap fastener 11 should be greater than the width of the fixed end 3, so as to overlap and fix it with the corresponding part of the clothing surface and the snap fastener hook 2 to prevent the fixed end from slipping.

[0041] (4) The ends of the nickel-titanium alloy wire 6 extend beyond the two fixed ends 3 and are wound around the aluminum rod 9. The joints between the ends of the nickel-titanium alloy wire 6 and the aluminum rod 9 are soldered to prevent the nickel-titanium alloy wire 6 from slipping. The aluminum rod 9 is positioned outside the fixed end 3 and close to the fixed end 3 to prevent ineffective contraction when energized. If the aluminum rod 9 is far from the fixed end 3, there will be a long nickel-titanium alloy wire 6 between the aluminum rod 9 and the fixed end 3. After the nickel-titanium alloy wire 6 is energized and contracted, the contraction area between the aluminum rod 9 and the fixed end 3 will be ineffective contraction. The remaining ends of the nickel-titanium alloy wire 6 are connected to the external wires for energization control.

[0042] The nickel-titanium alloy wire compression and pressurization device proposed in this invention solves the problems of dead wrinkles and unstable ends that easily occur when a single continuous nickel-titanium alloy wire is wound around the human body surface. It can generate effective pressure, is highly operable, reusable, and has high practical value. This compression and pressurization device can be used in anti-load compensation surface pressure equipment, medical devices, intelligent robots, and other fields, with nickel-titanium alloy wire as the main actuating unit.

[0043] The following examples illustrate the implementation of the electrically connected nickel-titanium alloy wire shrinkage and pressure device provided by the present invention.

[0044] Implementation Example Reference Figures 1 to 4 As shown in the example, the electrically connected nickel-titanium alloy wire contraction and pressure device provided in this embodiment example uses a 0.15mm diameter nickel-titanium alloy wire to form the device and applies it to the human thigh area for electrically contraction. The contraction and pressure device contains a single nickel-titanium alloy wire 6, which is bent back and forth to form a long strip shape with a 3mm spacing, arranged in 5 columns. The specific structure is as follows: like Figure 1 In the middle, the nickel-titanium alloy wire 6 is located between the double-layer cover cloth 4. The nickel-titanium alloy wire 6 is bent back and forth with a spacing of 3mm. The outer side of the cover cloth 4 is sewn and fixed tightly with sewing thread 5 along the edge of the nickel-titanium alloy wire 6 to form the main body 1 of the device.

[0045] like Figure 2 In the process, the bending points of the nickel-titanium alloy wire 6 are controlled using a grooved ceramic sheet 7 to prevent the wire from forming a crease. The ceramic sheet 7 is cylindrical, with the groove located in the middle of the cylinder, and the depth of the groove is 0.15mm greater than the diameter of the nickel-titanium alloy wire. A strong strap 8 is used to wrap the nickel-titanium alloy wire 6 and the ceramic sheet 7. The outside of the strong strap 8 is sewn tightly against the edge of the ceramic sheet 7 with sewing thread 5 to form a fixed end 3. The end of the nickel-titanium alloy wire 6 extends beyond the fixed end 3, forming a nickel-titanium alloy wire end 10. The nickel-titanium alloy wire end 10 extends beyond the fixed end 3 and is wrapped around the middle of the aluminum rod 9. The aluminum rod 9 and the nickel-titanium alloy wire end 10 are soldered together to fix them in place. The aluminum rod 9 is held in place outside the fixed end 3 to prevent ineffective shrinkage when energized.

[0046] like Figure 3 In the middle, a snap fastener 11 is sewn on the back of the shrink-pressurizing device. The width of the snap fastener 11 is greater than the width of the fixed end 3, so that it can fully overlap with the snap fastener hook 2.

[0047] like Figure 4 In the middle, the compression device is wrapped around the thigh area, and the outer thigh is covered with trousers with hook-and-loop fasteners 2. The hook-and-loop fasteners 11 are fastened to the hook-and-loop fasteners 2.

[0048] like Figure 4 To ensure effective retraction when energized, the retraction pressure device should be wound around the thigh area at least once. The distance H between each turn of the device body 1 after winding should be approximately equal to the winding spacing of the nickel-titanium alloy wires 6 within the device body 1, ensuring equal spacing of the nickel-titanium alloy wires 6. The fixed end 3 should ideally be positioned on the front or side of the body for easy adjustment and use while seated.

[0049] While the embodiments disclosed in this invention are as described above, they are merely illustrative of the embodiments to facilitate understanding of the invention and are not intended to limit the invention. Any person skilled in the art to which this invention pertains may make any modifications and variations in the form and details of the implementation without departing from the spirit and scope disclosed herein; however, the scope of patent protection for this invention shall still be determined by the scope defined in the appended claims.

Claims

1. A series-connected nickel-titanium alloy wire shrinkage and pressure device, characterized in that, include: Device body (1), fixed end (3), aluminum rod (9); The main body (1) of the device includes a cover cloth (4), sewing thread (5), and nickel-titanium alloy wire (6); two sets of fixed ends (3) are located at both ends of the shrink-pressurization device, and multiple ceramic pieces (7) are arranged at intervals in each set of fixed ends (3). A single nickel-titanium alloy wire (6) is wound around the ceramic pieces (7) at both ends in a back-and-forth bending manner to form an S-shaped winding structure. The cover cloth (4) on both sides is laid on the upper and lower ends of the nickel-titanium alloy wire (6) and the ceramic pieces (7), and the nickel-titanium alloy wire (6) is sewn and fixed on the cover cloth (4) by sewing thread (5). The two ends of the single nickel-titanium alloy wire (6) extend out to form nickel-titanium alloy wire ends (10), and the nickel-titanium alloy wire ends (10) at both ends are respectively wound around an aluminum rod (9), and the nickel-titanium alloy wire ends (10) and the aluminum rod (9) around which they are wound are fastened by solder to form an integrally electrically connected nickel-titanium alloy wire shrink-pressurization device; the end of the nickel-titanium alloy wire end (10) that extends out of the aluminum rod (9) is connected to an external wire for power control of the shrink-pressurization device.

2. The electrically connected nickel-titanium alloy wire shrinkage and pressure device according to claim 1, characterized in that, The reciprocating bending area of ​​the nickel-titanium alloy wire (6) is fixed by a ceramic sheet (7).

3. The electrically connected nickel-titanium alloy wire shrinkage and pressure device according to claim 2, characterized in that, The ceramic sheet (7) is configured as a disc structure, and an annular groove is provided on the waist of the disc structure to wind the reciprocating bending area of ​​the nickel-titanium alloy wire (6) within the annular groove, so as to avoid the nickel-titanium alloy wire from being bent into dead folds.

4. The electrically connected nickel-titanium alloy wire shrinkage and pressure device according to claim 1, characterized in that, Each set of fixed ends (3) also includes: a strong band (8) sleeved on the outside of each ceramic piece (7) in the set of fixed ends (3), and a sewing thread (5) is used to fix the strong band (8) along the ceramic piece (7) to prevent the nickel-titanium alloy wire (6) from coming out of the ceramic piece (7).

5. The electrically connected nickel-titanium alloy wire shrinkage and pressure device according to claim 1, characterized in that, Also includes: 11 with snap fastener and fleece lining; The hook and loop fastener 11 is sewn onto the back of the shrink-pressurization device, specifically onto the fixed end (3) and the main body (1), and the width of the hook and loop fastener 11 is greater than the width of the fixed end (3).

6. The electrically connected nickel-titanium alloy wire shrinkage and pressure device according to claim 5, characterized in that, Also includes: Hook and loop fastener (2); The hook and loop fastener (2) is sewn onto the fabric of the part of the body to be pressurized. When the compression device is wrapped around the part of the body to be pressurized, the hook and loop fastener (2) is connected to the hook and loop fastener 11 on the back of the compression device to prevent the fixed end from slipping.

7. The electrically connected nickel-titanium alloy wire shrinkage and pressure device according to claim 1, characterized in that, Both ends of the aluminum rod (9) are configured with a C-shaped bending structure, and the aluminum rod (9) with the end of the nickel-titanium alloy wire (6) is positioned close to the fixed end (3) so that the effective shrinkage area of ​​the nickel-titanium alloy wire (6) after being energized and shrinking is located within the area of ​​the device body (1).

8. The electrically connected nickel-titanium alloy wire shrinkage and pressure device according to any one of claims 1 to 7, characterized in that, The number of turns of the compression and pressurization device on the part of the human body to be pressurized is greater than or equal to one full turn, and the distance H between each turn after the device body (1) is wound is consistent with the winding spacing of the nickel-titanium alloy wire (6) inside the device body (1). The fixed end (3) is fixed to the front or side of the human body part.

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