A fascia circulation device with intelligent pressure sensing adjustment

Abstract

This invention relates to the field of physiotherapy and health care equipment technology, and discloses a traveling wave shearing fascia circulation device, including a body. Several sets of camshafts are rotatably connected to the inner cavity of the body. Differential shear heads are sleeved on the outer walls of the camshafts. A drive motor for driving the camshafts is also fixedly mounted in the inner cavity of the body. Through the concentric ring differential structure of the differential shear heads, a tangential velocity difference is generated on the skin surface, applying shear stress to the fascia layer interface at the subcutaneous depth. This solves the technical problem that normal pressure cannot loosen fascial adhesions in existing technologies. The helical phase arrangement of the cam array causes several differential shear heads to form a traveling wave sequence, with shear force acting sequentially from one end to the other. Fascial adhesions are loosened segment by segment in a directional manner, and the directional pressure gradient generated by the traveling wave effectively promotes the unidirectional flow of tissue fluid and lymph.

Description

Technical Field

[0001] This invention relates to the field of physiotherapy and health care equipment technology, specifically to a fascia circulation device with intelligent pressure sensing adjustment. Background Technology

[0002] Fascia is a dense connective tissue that wraps around and connects muscles, organs, and bones in the human body. Its normal interlayer slippage function plays an important role in maintaining coordinated muscle movement, promoting tissue fluid exchange, and nerve conduction. When fascia suffers chronic strain or is subjected to external impact, adhesions easily form between the fascial layers, leading to local pain, limited mobility, and impaired blood circulation.

[0003] Existing fascia therapy equipment generally uses normal vibration (i.e., reciprocating impact perpendicular to the body surface) as its primary mode of action. Representative products include fascia guns, pneumatic massage belts, and heat-vibrating massagers. These devices share the following common drawbacks:

[0004] First, the force is mainly normal pressure, lacking tangential (parallel to the fascia layer interface) shear force component. The key mechanical mechanism for the release of fascial adhesions lies in interlayer shear displacement. Normal pressure can only compress tissue and cannot effectively break the interlayer adhesions.

[0005] Second, existing equipment mostly adopts a single-point or whole-area synchronous action mode, which cannot generate sequential pressure waves that propagate along the longitudinal axis of the limb, thus having a limited effect on promoting lymphatic return and directional flow of tissue fluid.

[0006] Third, the contact head has a simple structure, and the inner and outer areas come into contact with the skin at the same speed, resulting in a zero velocity gradient on the contact surface, which makes it impossible to generate effective shear strain under the skin.

[0007] In summary, existing technologies have fundamental deficiencies in understanding the mechanical mechanisms of myofascial release, and there is an urgent need for a novel myofascial therapy device that can generate a tangential velocity gradient on the skin surface and propagate along the limb in a traveling wave manner. Summary of the Invention

[0008] This invention provides a fascia circulation device with intelligent pressure sensing adjustment, which solves the problems mentioned in the background art.

[0009] The present invention provides the following technical solution: a traveling wave shearing fascia circulation instrument, comprising a body, wherein a plurality of camshafts are rotatably connected to the inner cavity of the body, a differential shearing head is sleeved on the outer wall of the camshaft, and a drive motor for driving the camshafts is fixedly assembled in the inner cavity of the body;

[0010] Several cam groups on the same camshaft are arranged in a helical phase, with a phase angle difference of 360° / N between adjacent cam groups, where N is the number of cam groups on the same camshaft. This causes several differential shear heads to generate sequential reciprocating motions with a fixed phase difference, forming a traveling wave shearing action that propagates along the length of the machine body.

[0011] The differential shear head is equipped with a planetary gear set, which includes an inner contact disc and an outer contact ring that simultaneously contact the skin at different speeds, forming a tangential velocity gradient on the skin surface.

[0012] As a preferred embodiment of the present invention, the machine body includes a main housing, the top outer wall of the main housing is provided with a plurality of guide grooves, a plurality of fixed seats are fixedly mounted at intervals on one side top of the main housing, and the top of each fixed seat is rotatably connected to a limit wheel; the machine body also includes a transmission disc fixedly mounted to the ends of a plurality of camshafts, the outer walls of the plurality of transmission discs are driven by a synchronous belt, the bottom of the synchronous belt abuts against the top of the limit wheel; a plurality of bearing seats are also fixedly mounted in the inner cavity of the main housing.

[0013] As a preferred embodiment of the present invention, the transmission disc and synchronous belt can be replaced by a combination of gears and chains.

[0014] As a preferred embodiment of the present invention, the camshaft includes a rotating shaft, and a plurality of cam groups are fixedly sleeved on the outer wall of the rotating shaft. Each cam group consists of two symmetrically arranged cam plates, and a limiting groove is formed on the outer wall of the opposite surface of the two cam plates. The top guide block of the differential shear head is limited and matched with the limiting groove on both sides.

[0015] As a preferred embodiment of the present invention, the differential shear head includes a contact shell, a guide block is fixedly mounted on the top of the contact shell via a connecting bracket, and a built-in motor is fixedly mounted inside the contact shell; a planetary carrier is fixedly mounted on the outer wall of the built-in motor near the output shaft, and three planetary pins are fixedly mounted on the bottom of the planetary carrier; a gear train assembly is sleeved on the outer wall of the three planetary pins, and an output assembly is sleeved on the bottom of the gear train assembly.

[0016] As a preferred embodiment of the present invention, the gear train assembly includes a sun gear, three planet gears, and a gear ring; the sun gear is fixedly assembled with the output shaft of the built-in motor; the three planet gears are respectively rotatably sleeved on the three planetary pins, and simultaneously mesh with the sun gear externally and the gear ring internally; the outer wall of the gear ring is provided with a snap-fit ​​groove.

[0017] As a preferred embodiment of the present invention, the output component includes an outer contact ring, the top inner wall of which has a sleeve cavity, and an adjusting bolt is rotatably connected to the top outer wall of the outer contact ring, the end of which abuts against the inner wall of the snap-fit ​​groove; an inner rotating body is sleeved inside the outer contact ring; the top center of the inner rotating body is fixedly connected to the output shaft of the built-in motor by a fixing bolt; a transmission spring is fixedly mounted at the bottom center of the inner rotating body, and an inner contact disc is fixedly mounted at the end of the transmission spring.

[0018] As a preferred embodiment of the present invention, the contact surface of the inner ring contact disc is made of a high-friction coefficient elastic silicone material, and the bottom contact surface of the outer ring contact ring is made of a low-friction coefficient polytetrafluoroethylene coating.

[0019] As a preferred technical solution of the present invention, the direction of traveling wave propagation is switched by controlling the forward and reverse rotation of the drive motor; when the drive motor rotates forward, the traveling wave propagates from the proximal end to the distal end, generating a centripetal pressure gradient, which promotes the return of venous blood and lymph; when the drive motor rotates in reverse, the traveling wave propagates in the opposite direction, generating a centrifugal pressure gradient, which promotes the distal perfusion of arterial blood.

[0020] The machine body is equipped with straps on the outside, and the straps are equipped with a tension adjustment mechanism.

[0021] As a preferred technical solution of the present invention, a fixed phase difference is set between the multiple camshafts by adjusting the installation angle of the transmission disk, generating a traveling wave propagation component in the transverse direction perpendicular to the longitudinal axis of the limb, which together with the longitudinal traveling wave forms a two-dimensional traveling wave network.

[0022] The present invention has the following beneficial effects:

[0023] 1. This fascia circulation instrument with intelligent pressure sensing adjustment generates a tangential velocity difference on the skin surface through the concentric ring differential structure of the differential shear head, and applies shear stress to the fascia layer interface at the subcutaneous depth. This solves the technical problem that the normal pressure of the existing technology cannot loosen fascia adhesions. The spiral phase arrangement of the cam array makes several differential shear heads form a traveling wave sequence. The shear force acts from one end to the other end in sequence, and the fascia adhesions are loosened segment by segment in a directional manner. At the same time, the directional pressure gradient generated by the traveling wave effectively promotes the unidirectional flow of tissue fluid and lymph.

[0024] By adjusting the friction between the outer rotating body and the toothed ring, the speed difference between the inner and outer rings is changed, thereby achieving continuous adjustment of shear strength. This adapts to the personalized treatment needs of different parts and different degrees of fascial hardening. The forward and reverse rotation of the drive motor realizes the switching of the traveling wave direction, which corresponds to two clinical treatment modes: lymphatic drainage promotion (centripetal) and arterial blood perfusion promotion (centrifugal).

[0025] The contact structure between the synchronous belt and the limit wheel ensures the synchronization accuracy of multiple axes, and the strap tension adjustment mechanism realizes the passive sensing adjustment of normal pressure. The entire system can achieve safe and controllable pressure output without the need for additional sensors. Attached Figure Description

[0026] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0027] Figure 2 This is a schematic diagram of the guide groove structure of the present invention;

[0028] Figure 3 This is a schematic diagram of the connection structure between the camshaft and the differential shear head of the present invention;

[0029] Figure 4 This is a schematic diagram of a partial structure of the body of the present invention;

[0030] Figure 5 This is a schematic diagram of the differential shear head structure of the present invention;

[0031] Figure 6 This is a schematic diagram of the wheel train assembly structure of the present invention;

[0032] Figure 7 This is a schematic diagram of the transmission spring structure of the present invention;

[0033] Figure 8 This is a schematic diagram of the camshaft structure of the present invention.

[0034] In the diagram: 1. Machine body; 2. Camshaft; 3. Drive motor; 4. Differential shear head;

[0035] 101. Main housing; 102. Guide groove; 103. Fixed base; 104. Limit wheel; 105. Transmission disc; 106. Synchronous belt; 107. Bearing housing;

[0036] 201. Rotary shaft; 202. Cam plate; 203. Limiting groove;

[0037] 401. Contact housing; 402. Built-in motor; 403. Connecting bracket; 404. Guide block; 405. Planetary carrier; 406. Planetary pin; 407. Locking bolt;

[0038] 408. Gear train components;

[0039] 4081, Sun gear; 4082, Ring gear; 4083, Planet gears; 4084, Snap-fit ​​groove;

[0040] 409. Output components;

[0041] 4091, Outer ring contact ring; 4092, Sleeve cavity; 4093, Adjusting bolt; 4094, Inner rotating body; 4095, Fixing bolt; 4096, Transmission spring; 4097, Inner ring contact plate. Detailed Implementation

[0042] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0043] Please see Figure 1 - Figure 8 A traveling wave shearing fascia circulation device, comprising a body 1, several sets of camshafts 2, a drive motor 3, and several differential shear heads 4.

[0044] The main body 1, serving as the main load-bearing structure of the present invention, includes a main shell 101. The main shell 101 is generally in the shape of a long strip plate, and its top outer wall is provided with a plurality of guide grooves 102 along the length direction. The guide grooves 102 are used to axially guide the guide block 404 at the top of the differential shear head 4, restricting the differential shear head 4 to reciprocate only along the axial direction of the guide grooves 102 (i.e., perpendicular to the body surface direction), and preventing it from shifting laterally.

[0045] Several fixed seats 103 are fixedly mounted at intervals along the width direction on one side of the top of the main housing 101. Each fixed seat 103 is rotatably connected to a limiting wheel 104. The limiting wheel 104 abuts against the bottom outer wall of the synchronous belt 106. Its function is to: firstly, apply an upward preload to the synchronous belt 106 to prevent the synchronous belt 106 from disengaging from the transmission disc 105 due to vibration or slack during transmission; secondly, by adjusting the installation height of the limiting wheel 104, the preload of the synchronous belt 106 can be set to ensure the transmission synchronization accuracy between multiple camshafts 2 and ensure the timing accuracy of the traveling wave sequence action.

[0046] Several bearing seats 107 are fixedly assembled along the length direction at the top of the inner cavity of the main housing 101 to support the middle part of the rotating shaft 201 of each camshaft 2, to prevent the rotating shaft 201 from axial movement or radial runout when rotating at high speed, and to ensure the accurate transmission of the cam profile.

[0047] Several camshafts 2 are arranged laterally in the inner cavity of the main housing 101. One end of their rotating shaft 201 is driven and connected to the output end of the drive motor 3, and the other end is driven by the transmission disk 105 and the synchronous belt 106, so as to realize the synchronous linkage of multiple sets of camshafts 2. The drive motor 3 is fixed at one end of the inner cavity of the main housing 101, serving as the sole drive source for the entire cam array, which simplifies the transmission system and reduces manufacturing costs.

[0048] The camshaft 2 includes a rotating shaft 201. Several cam sets are fixedly sleeved on the outer wall of the rotating shaft 201 along the axial direction. Each cam set consists of two symmetrically arranged cam plates 202, forming a cam pair that clamps and guides the differential shear head 4 from top to bottom. Limiting grooves 203 are opened on the outer walls of the opposite surfaces of the two cam plates 202 for limiting cooperation with the two sides of the top guide block 404 of the differential shear head 4.

[0049] The mounting phases of each cam group on the same camshaft 2 are sequentially offset along the axial direction, and the offset pattern is spiral:

[0050] If there are N cam groups on the same camshaft 2, then the phase angle difference between two adjacent cam groups is 360° / N. When the shaft 201 rotates at a constant speed, each cam group reaches the highest point of the cam in sequence, and the differential shear head 4 at the corresponding position is pushed out in sequence, forming a traveling wave shearing action that propagates from one end to the other along the length of the machine body 1.

[0051] The propagation speed of a traveling wave is determined by the following two parameters:

[0052] One is the speed of the drive motor 3; the higher the speed, the higher the frequency of the traveling wave.

[0053] Secondly, there is the phase angle difference between adjacent cam groups. The smaller the phase angle difference, the shorter the start-up time interval between adjacent differential shear heads 4, and the faster the traveling wave propagation speed. By adjusting the above parameters, a suitable traveling wave speed can be selected for different treatment purposes.

[0054] The direction of the traveling wave is switched by the forward and reverse rotation of the drive motor 3: the proximal end refers to the side of the device that is closer to the human heart, and the distal end refers to the side that is farther away from the heart.

[0055] When the drive motor 3 rotates forward, the traveling wave propagates from the side of the body 1 closest to the heart to the distal end, generating a centripetal pressure gradient, which effectively promotes the return of venous blood and lymph, and is suitable for eliminating limb edema and recovering from fatigue.

[0056] When the drive motor 3 reverses, the traveling wave propagates in the opposite direction, generating a pressure gradient in the centrifugal direction, which promotes distal perfusion of arterial blood and is suitable for improving and treating peripheral circulatory disorders.

[0057] A fixed phase difference can also be set between multiple rows of camshafts 2 (i.e., the starting phase of the camshafts 2 in different rows is different relative to the output shaft of the drive motor 3), which is achieved by adjusting the installation angle of the transmission plate 105. This generates a traveling wave propagation component in the transverse direction perpendicular to the longitudinal axis of the limb, forming a two-dimensional traveling wave network, thereby achieving more comprehensive fascial coverage and release of the treatment area.

[0058] It should be noted that the transmission disc 105 and the timing belt 106 can also be replaced by gears and chains.

[0059] The differential shear head 4 includes a contact shell 401, on the top of which a connecting bracket 403 is fixedly mounted. A guide block 404 is fixedly mounted on the top of the connecting bracket 403. The guide block 404 slides in cooperation with the guide groove 102 on the top of the main shell 101 to ensure that the differential shear head 4 can only reciprocate in a direction perpendicular to the body surface.

[0060] An internal motor 402 is fixedly attached to the inner cavity of the contact shell 401. The internal motor 402 serves as an independent drive source for the differential shear head 4, specifically driving the internal gear train assembly 408 to generate differential output.

[0061] A planetary carrier 405 is fixedly mounted on the outer wall of the built-in motor 402 near the output shaft. Three planetary pins 406 are evenly fixedly mounted on the bottom of the planetary carrier 405 along the circumference. The planetary carrier 405 is fixed to the outer wall of the built-in motor 402 by locking bolts 407 to ensure that there is no relative rotation between the planetary carrier 405 and the built-in motor 402.

[0062] The planetary carrier 405 is fixed and does not rotate. The planetary gear 4083 rotates around its own axis under the drive of the sun gear 4081, and at the same time revolves around the axis of the sun gear 4081, driving the ring gear 4082 to rotate, thus realizing the planetary speed reduction function.

[0063] The outer walls of the three planetary pins 406 are fitted with a gear train assembly 408, which includes a sun gear 4081, three planetary gears 4083 and a ring gear 4082.

[0064] The sun gear 4081 is fixedly assembled with the output shaft of the built-in motor 402 and receives the driving torque of the motor; the three planet gears 4083 are respectively sleeved on the three planetary pins 406, and simultaneously mesh with the sun gear 4081 externally and the gear ring 4082 internally; the gear ring 4082 is sleeved on the outside of the sun gear 4081, its inner wall meshes with the three planet gears 4083, and its outer wall has a snap-fit ​​groove 4084.

[0065] The output component 409 includes an outer contact ring 4091. The top of the outer contact ring 4091 has a sleeve cavity 4092. The sleeve cavity 4092 is sleeved with the outer wall of the gear ring 4082. The outer contact ring 4091 is axially limited by the interference fit between the sleeve cavity 4092 and the gear ring 4082 to ensure that the two do not separate axially, while allowing the outer contact ring 4091 and the gear ring 4082 to rotate synchronously.

[0066] An adjusting bolt 4093 is rotatably connected to the top outer wall of the outer contact ring 4091. The end of the adjusting bolt 4093 can generate different degrees of abutment friction with the inner wall of the locking groove 4084. By rotating the adjusting bolt 4093, the abutment force between it and the locking groove 4084 can be changed, thereby adjusting the rotational friction between the outer contact ring 4091 and the gear ring 4082. Specifically, screwing in the adjusting bolt 4093 increases the pressure of its end against the inner wall of the locking groove 4084, and the friction increases accordingly. The outer contact ring 4091 tends to rotate synchronously with the gear ring 4082 at a low speed. Screwing out the adjusting bolt 4093 decreases the pressure, reduces the friction, and creates a speed difference between the outer contact ring 4091 and the gear ring 4082. The actual speed of the outer contact ring 4091 increases, thus achieving stepless adjustment of the shear strength.

[0067] When the friction is high, the outer contact ring 4091 and the gear ring 4082 tend to rotate synchronously, resulting in a lower output speed. When the friction decreases, the degree to which the outer contact ring 4091 follows the gear ring 4082 decreases, creating a speed difference between them. The actual output speed of the outer contact ring 4091 is between zero and the speed of the gear ring 4082. This adjustment mechanism enables stepless adjustment of the output speed of the outer contact ring 4091.

[0068] An inner rotating body 4094 is sleeved inside the outer contact ring 4091. The inner rotating body 4094 is fixedly connected to the output shaft of the built-in motor 402 by a fixing bolt 4095 at the center of its top, and directly receives full-speed drive from the motor. A transmission spring 4096 is fixedly mounted at the center of the bottom of the inner rotating body 4094, and an inner contact plate 4097 is fixedly mounted at the end of the transmission spring 4096.

[0069] The transmission spring 4096 is the core elastic element for achieving passive pressure sensing in this invention. When the inner contact plate 4097 contacts the skin and is subjected to skin resistance, the transmission spring 4096 undergoes axial compression. The amount of compression is proportional to the skin contact resistance, thereby passively sensing the real-time changes in the skin surface resistance. For areas with surface undulations (such as bony prominences and muscle contour changes), the transmission spring 4096 adaptively compensates through different degrees of compression to ensure that the inner contact plate 4097 maintains effective contact with the skin at each location. At the same time, the transmission spring 4096 buffers the impact force during the cam ejection process, preventing normal overpressure damage to skin tissue, thus constituting the sensorless, purely mechanical passive pressure sensing adjustment function of this invention.

[0070] The bottom of the differential shear head 4 that contacts the skin is composed of the bottom surface of the outer contact ring 4091 (annular area) and the inner contact disc 4097 (circular area), which are arranged concentrically. The inner contact disc 4097 is located in the central circular area (approximately 25-40 mm in diameter, with different specifications depending on the treatment site), and the contact surface of the outer contact ring 4091 is an annular area surrounding its outer circumference (approximately 15 mm thick).

[0071] The contact surface of the inner ring contact plate 4097 is made of high-friction elastic silicone material with a friction coefficient of approximately 0.8 to 1.2, which can effectively grip the skin and cause it to rotate together with the inner ring contact plate 4097.

[0072] The bottom contact surface of the outer contact ring 4091 is coated with a low-friction coefficient polytetrafluoroethylene (PTFE) coating, with a friction coefficient of approximately 0.05 to 0.1, allowing the outer contact ring 4091 to quickly glide across the skin surface with minimal resistance.

[0073] Because the inner contact disc 4097 (directly driven by the built-in motor 402) and the outer contact ring 4091 (reduced by the gear train assembly 408, with the speed set by the adjusting bolt 4093) rotate at different speeds, a tangential velocity gradient is formed on the skin surface.

[0074] The tangential velocity gradient generates a shear stress field between the skin and subcutaneous tissue.

[0075] Let the difference in linear velocity between the contact surfaces of the inner contact disc 4097 and the outer contact ring 4091 be Δv, the thickness from the skin to the superficial fascia layer be h (approximately 4–10 mm), and the tissue shear modulus be G (approximately 1–10 kPa). Then, the shear stress at the interface between the fascial layers is τ = G × (Δv / h). When the parameters are set appropriately, the value of τ can reach the threshold for fascial adhesion release (approximately 2–5 kPa), while being far below the tissue damage threshold (approximately 50 kPa), thus achieving safe and effective non-invasive interfacial release.

[0076] A transmission disc 105 is fixedly mounted on one end of the shaft 201 of several camshafts 2. The outer walls of the several transmission discs 105 drive the same synchronous belt 106 together, and the synchronous linkage transmission of multiple camshafts 2 is realized through the synchronous belt 106.

[0077] The bottom of the synchronous belt 106 abuts against the top of each limiting wheel 104. The limiting wheels 104 apply an upward preload to the synchronous belt 106 to prevent it from skipping teeth or coming off during operation due to vibration or load changes. This ensures that the transmission phase of each camshaft 2 does not shift, thereby guaranteeing the accuracy and stability of the traveling wave timing. The installation height of the limiting wheels 104 can be adjusted by replacing the fixing bases 103 with different heights to accommodate the compensation requirements of the synchronous belt 106 under different tension conditions.

[0078] The drive motor 3 is fixed to one end of the inner cavity of the main housing 101. Its output shaft is directly driven by the shaft 201 of the nearest set of camshafts 2. The power is transmitted to all camshafts 2 in sequence via the transmission disc 105 and the synchronous belt 106, realizing a high-efficiency transmission architecture that drives the entire row of camshafts 2 with a single drive source.

[0079] The device 1 is equipped with a strap on the outside for fixing the device to the user's body. The strap is equipped with a tension adjustment mechanism. By adjusting the pretension of the strap, the initial normal pressure applied to the skin by the bottom contact surface of the differential shear head 4 can be controlled.

[0080] The magnitude of the initial normal pressure directly affects the effective contact area and friction between the differential shear head 4 contact surface and the skin, and thus determines the subcutaneous transmission depth of the tangential velocity gradient: when the initial normal pressure is small, the contact surface fit is low, and the shear force mainly acts on the epidermis and superficial fascia layer; when the initial normal pressure is moderate, the contact surface fits fully, and the shear force effectively acts on the superficial fascia layer.

[0081] When the initial normal pressure is large, the contact surface pre-compresses the subcutaneous tissue, which can further extend the effective shear depth to the deep fascia layer.

[0082] The elastic buffer of the transmission spring 4096 and the tension adjustment of the strap work together to form the dual passive pressure sensing adjustment mechanism of the present invention, so as to realize the adaptive matching of the treatment pressure to the user's body shape and body surface morphology without the need for active sensors and control algorithms.

[0083] When in use, the machine body 1 is fixed to the body part of the user that needs treatment (such as the lower back, thigh, calf, etc.) by straps. The tension of the straps is adjusted according to the treatment needs to set a suitable initial normal pressure. The speed difference between the inner and outer rings of each differential shear head 4 is set by adjusting the bolt 4093, or the speed of the drive motor 3 is directly controlled.

[0084] After the equipment is turned on, the drive motor 3 starts and drives each camshaft 2 to rotate synchronously via the transmission disc 105 and the synchronous belt 106. Since the cam groups on each camshaft 2 are arranged in a helical phase, each differential shear head 4 is pushed out by the cam in sequence. The guide block 404 of the 4 slides in the guide groove 102 of the main housing 101, so that each differential shear head 4 reciprocates in the normal direction.

[0085] The differential shear head 4 is pushed out and contacts the skin. The built-in motor 402 drives the inner contact plate 4097 to rotate clockwise at a lower speed. At the same time, the planetary gear set transmits the motion to the gear ring 4082. After damping adjustment by the adjusting bolt 4093, it drives the outer contact ring 4091 to rotate counterclockwise at a higher speed. The high-friction silicone surface of the inner contact plate 4097 drives the central area of ​​the skin to rotate clockwise, while the low-friction PTFE surface of the outer contact ring 4091 slides against the skin periphery at a higher speed. The maximum tangential velocity gradient is generated on the concentric circumference at the junction of the inner and outer rings. This velocity gradient is transmitted downward to the subcutaneous fascia layer, generating effective shear stress at the interface between the fascia layers and loosening local fascial adhesions.

[0086] Simultaneously, the sequential movements of several differential shear heads 4 create traveling waves that propagate from the proximal end to the distal end (or vice versa). The directional pressure gradient generated by these traveling waves continuously drives the shear release between the fascial layers from one end to the other, while simultaneously promoting the unidirectional flow of local tissue fluid and lymph, achieving a therapeutic effect that enhances circulation. When the differential shear head 4 contacts a local high point on the body surface, the transmission spring 4096 is moderately compressed to absorb the impact and maintain contact.

[0087] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0088] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended technical solutions and their equivalents.

Claims

1. A traveling wave shear type fascia circulation device, comprising a body (1), characterized in that: The inner cavity of the machine body (1) is rotatably connected to several sets of camshafts (2), and a differential shear head (4) is sleeved on the outer wall of the camshaft (2). The inner cavity of the machine body (1) is also fixedly equipped with a drive motor (3) for driving the camshaft (2). Several cam groups on the same camshaft (2) are arranged in a spiral phase, and the phase angle difference between adjacent cam groups is 360° / N, where N is the number of cam groups on the same camshaft (2), so that several differential shear heads (4) produce sequential reciprocating displacement with a fixed phase difference, forming a traveling wave shearing action that propagates along the length direction of the body (1); The differential shear head (4) is equipped with a planetary gear set, which includes an inner ring contact disc (4097) and an outer ring contact ring (4091) that simultaneously contact the skin at different speeds, forming a tangential velocity gradient on the skin surface.

2. The traveling wave shear type fascia circulation device according to claim 1, characterized in that: The machine body (1) includes a main housing (101), the top outer wall of the main housing (101) is provided with a plurality of guide grooves (102), and a plurality of fixed seats (103) are fixedly mounted at intervals on one side of the top of the main housing (101), and the top of each fixed seat (103) is rotatably connected to a limiting wheel (104); the machine body (1) also includes a transmission disc (105) fixedly mounted to the ends of a plurality of camshafts (2), and a synchronous belt (106) is drivenly mounted on the outer wall of the plurality of transmission discs (105), the bottom of the synchronous belt (106) abutting against the top of the limiting wheel (104); the inner cavity of the main housing (101) is also fixedly mounted with a plurality of bearing seats (107).

3. The traveling wave shear type fascia circulation device according to claim 2, characterized in that: The transmission disc (105) and the timing belt (106) can be replaced by a combination of gears and chains.

4. The traveling wave shear type fascia circulation device according to claim 1, characterized in that: The camshaft (2) includes a rotating shaft (201), and a number of cam groups are fixedly sleeved on the outer wall of the rotating shaft (201). Each cam group consists of two symmetrically arranged cam plates (202). Limiting grooves (203) are opened on the outer walls of the opposite surfaces of the two cam plates (202). The top guide block (404) of the differential shear head (4) is limited and matched with the limiting grooves (203) on both sides.

5. The traveling wave shear type fascia circulation device according to claim 1, characterized in that: The differential shear head (4) includes a contact shell (401), a guide block (404) is fixedly mounted on the top of the contact shell (401) via a connecting bracket (403), and a built-in motor (402) is fixedly mounted inside the contact shell (401); a planetary carrier (405) is fixedly mounted on the outer wall of the built-in motor (402) near the output shaft, and three planetary pins (406) are fixedly mounted on the bottom of the planetary carrier (405); a gear train assembly (408) is sleeved on the outer wall of the three planetary pins (406), and an output assembly (409) is sleeved on the bottom of the gear train assembly (408).

6. The traveling wave shear type fascia circulation device according to claim 5, characterized in that: The gear train assembly (408) includes a sun gear (4081), three planet gears (4083) and a ring gear (4082); the sun gear (4081) is fixedly assembled with the output shaft of the built-in motor (402); the three planet gears (4083) are respectively rotatably sleeved on the three planetary pins (406), and simultaneously mesh with the sun gear (4081) externally and the ring gear (4082) internally; the outer wall of the ring gear (4082) is provided with a snap-fit ​​groove (4084).

7. The traveling wave shear type fascia circulation device according to claim 6, characterized in that: The output component (409) includes an outer contact ring (4091), the top inner wall of the outer contact ring (4091) is provided with a sleeve cavity (4092), the top outer wall of the outer contact ring (4091) is rotatably connected with an adjusting bolt (4093), the end of the adjusting bolt (4093) abuts against the inner wall of the snap-fit ​​groove (4084); an inner rotating body (4094) is sleeved inside the outer contact ring (4091); the top center of the inner rotating body (4094) is fixedly connected to the output shaft of the built-in motor (402) by a fixing bolt (4095); a transmission spring (4096) is fixedly assembled at the bottom center of the inner rotating body (4094), and an inner contact plate (4097) is fixedly assembled at the end of the transmission spring (4096).

8. The traveling wave shear type fascia circulation device according to claim 7, characterized in that: The contact surface of the inner ring contact disc (4097) is made of high friction coefficient elastic silicone material, and the bottom contact surface of the outer ring contact ring (4091) is made of low friction coefficient polytetrafluoroethylene coating.

9. The traveling wave shear type fascia circulation device according to claim 7, characterized in that: The direction of travel wave propagation is switched by controlling the forward and reverse rotation of the drive motor (3); when the drive motor (3) rotates forward, the travel wave propagates from the proximal end to the distal end, generating a centripetal pressure gradient, which promotes the return of venous blood and lymph; when the drive motor (3) rotates in reverse, the travel wave propagates in the opposite direction, generating a centrifugal pressure gradient, which promotes the distal perfusion of arterial blood. The body (1) is provided with straps on the outside, and the straps are equipped with a tension adjustment mechanism.

10. The traveling wave shear type fascia circulation device according to claim 1, characterized in that: A fixed phase difference is set between the multiple camshafts (2) by adjusting the installation angle of the transmission disk (105), generating a traveling wave propagation component in the transverse direction perpendicular to the longitudinal axis of the limb, which together with the longitudinal traveling wave forms a two-dimensional traveling wave network.

Images