A diabetic foot foot pressure threshold testing device and method

Abstract

The application discloses a kind of diabetic foot foot pressure threshold testing device and method, device includes: shell;Push detection unit is arranged in the shell interior;Foot dynamometer is slidably arranged on push detection unit, and force probe is arranged on foot dynamometer, and force probe is used to contact with the foot of diabetic foot patient to test pressure threshold;Stepping motor is used to drive foot dynamometer to move up and down;First controller is used to set the moving speed of foot dynamometer by tester, and the start of stepping motor is controlled;Second controller is used to control stepping motor to stop by diabetic foot patient.The application can maintain the same moving speed in the same test process compared with hand-held pressure gauge, and controller is operated by patient and tester, so that the time of patient issuing order after foot reaching uncomfortable or painful pressure threshold is avoided.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of health monitoring devices, in particular to a diabetic foot foot pressure threshold testing device and method. BACKGROUND

[0002] Diabetes has become a global health crisis in the 21st century. In 2021, about 537 million adults worldwide had diabetes, one in 10 people, and it is estimated that by 2045, it will rise to 783 million. Foot ulcers are one of the most destructive complications of diabetes. Repeatedly receiving excessive shear force and vertical pressure on the foot is the mechanical cause of ulceration. If combined with peripheral neuropathy or peripheral vascular disease, infection, it will be difficult to heal the ulcer, and eventually lead to foot or lower extremity amputation. Therefore, preventing ulcers is the most important task in the care of diabetic foot patients.

[0003] There are currently various sensor-based in-shoe foot dynamic pressure testing systems that provide information on the health of the foot by monitoring the plantar pressure and reduce the risk of diabetic foot ulcers by timely detecting areas of increased foot pressure. Among them, the setting of in-shoe pressure threshold plays an important role in preventing diabetes-related foot ulcers. However, there are few testing methods and devices for foot pressure threshold, and none of them can uniformly control the pressure testing speed of the device and accurately control the stop operation of the device. SUMMARY

[0004] The present application provides a diabetic foot foot pressure threshold testing device and method to solve the problem that the existing foot pressure threshold testing device cannot uniformly control the pressure testing speed of the device and accurately control the stop operation of the device.

[0005] In one aspect, the present application provides a diabetic foot foot pressure threshold testing device, comprising:

[0006] a housing;

[0007] a top plate arranged on the top of the housing;

[0008] a push detection unit arranged inside the housing;

[0009] a foot ergometer vertically slidingly arranged on the push detection unit, the foot ergometer being provided with a force probe for contacting the foot of a diabetic foot patient to test the pressure threshold;

[0010] a stepper motor arranged on the push detection unit for driving the foot ergometer to move up and down;

[0011] The first controller is electrically connected with the stepper motor and is used by the tester to set the moving speed of the foot force gauge and control the starting of the stepper motor.

[0012] The second controller is electrically connected with the stepper motor and is used by the diabetic foot patient to control the stopping of the stepper motor.

[0013] In another aspect, the embodiment of the present application provides a diabetic foot foot pressure threshold testing method, comprising:

[0014] Comparing the foot of the diabetic foot patient with the foot pressure detection positioning template to determine the position of the test point;

[0015] Placing the test point of the foot of the diabetic foot patient at the position corresponding to the force measurement probe, and testing the pressure threshold of the foot of the diabetic foot patient by using the above-mentioned diabetic foot foot pressure threshold testing device.

[0016] The diabetic foot foot pressure threshold testing device and method of the present application have the following advantages:

[0017] (1) The diabetic foot foot pressure threshold testing device and method of the present application, compared with the widely used handheld pressure gauge, can maintain the same pressure measurement speed in the same test process, and has the advantage that the pressure measurement speed can be adjusted by the stepper motor when testing the influence of different pressure measurement speeds on the pressure threshold. In addition, the settings and operations of the controller are set to the patient and the researcher respectively, which avoids the data result error caused by the time when the patient's foot reaches the uncomfortable or painful pressure threshold and the reaction time of the researcher to record the pressure value.

[0018] (2) The pressure detection point positioning template in the present application is based on the superimposed contour of adult men and adult women to determine the contour range of the appropriate last bottom, and uses the superimposed contour line of the medium foot type group to observe whether the shoe last bottom width and contour design are correct, further accurately determining the contour range of the insole device in the diabetic foot patient insole pressure detection system. Based on the common ulcer location and ulcer-prone site, high foot peak pressure area, high dorsal peak pressure area and foot type anatomical feature points and sizes of diabetic foot patients (only for low-risk and medium-risk level diabetic foot ulcer risk patients, i.e. no or only one of the following risk factors in foot assessment: peripheral neuropathy, peripheral arterial vascular disease or foot deformity, and no history of previous foot ulcer or amputation), the positions of the diabetic foot patient foot pressure detection are more comprehensive and reasonable, and the positioning in the pressure detection point template is further accurate. The use of standardized pressure detection point template can solve the problem of inconsistent test positions between different patients, and the template can be used for comparison of foot pressure information of patients in different studies.

[0019] (3) The pressure detection point positioning template of the present application is divided into different forms for men and women, because a large number of experiments on foot pressure analysis show that there are significant differences between different genders, and women show lower peak pressure compared with men. And there are great differences in the morphological contour, internal structure morphology and physiological structure of the feet of different genders, so different pressure detection point positioning templates need to be provided for different foot types of different genders. The pressure detection point positioning template of the present application includes foot back detection points. The peak pressure and average pressure of the foot bottom are significantly higher than those of the foot back, and the foot back has a small possibility of causing foot and lower limb diseases caused by pressure changes, so the research on the pressure of the foot back is very little. However, there are cases and possibilities of ulceration of the foot back in diabetic foot patients, so the research on the pressure of the foot back has practical significance for diabetic foot patients and the design of insole pressure testing system. BRIEF DESCRIPTION OF DRAWINGS

[0020] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the drawings needed to be used in the embodiments or the prior art description will be briefly introduced below. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can also be obtained by those skilled in the art without creative labor.

[0021] Figure 1 A composition schematic diagram of a diabetic foot foot pressure threshold testing device provided by an embodiment of the present application is shown in the figure.

[0022] Figure 2 A side view of a diabetic foot foot pressure threshold testing device provided by an embodiment of the present application is shown in the figure.

[0023] Figure 3 A front view of a diabetic foot foot pressure threshold testing device provided by an embodiment of the present application is shown in the figure.

[0024] Figure 4 A schematic diagram of a foot dynamometer provided by an embodiment of the present application is shown in the figure.

[0025] Figure 5 A common position diagram of foot ulcers of diabetic foot patients provided by an embodiment of the present application is shown in the figure.

[0026] Figure 6 A foot bottom diagram of a foot bottom area with higher peak pressure provided by an embodiment of the present application is shown in the figure.

[0027] Figure 7 A foot bottom pressure detection point positioning template for men among adult diabetic foot patients provided by an embodiment of the present application is shown in the figure.

[0028] Figure 8 A foot bottom pressure detection point positioning template for women among adult diabetic foot patients provided by an embodiment of the present application is shown in the figure.

[0029] Figure 9 The male dorsum of foot pressure detection point positioning template for adult diabetic foot patients provided by the embodiment of the present application;

[0030] Figure 10 The female dorsum of foot pressure detection point positioning template for adult diabetic foot patients provided by the embodiment of the present application;

[0031] Figure 11 The plantar pressure detection point positioning template auxiliary diagram provided by the embodiment of the present application.

[0032] BRIEF DESCRIPTION OF DRAWINGS: 100 - housing, 101 - top plate, 102 - test hole, 110 - base, 111 - foot pad, 120 - thrust detection unit, 121 - mounting bracket, 122 - sliding groove, 123 - sliding block, 124 - sliding rod, 125 - panel, 126 - foot force meter, 127 - force probe, 128 - stepping motor, 129 - display screen, 130 - operation key, 131 - data interface, 1 - foot contour, 2 - thumb, 3 - first metatarsophalangeal joint, 4 - second to third metatarsophalangeal joint, 5 - heel, 6 - fifth metatarsophalangeal joint, 7 - instep contour, 8 - fifth metatarsophalangeal joint outer protrusion point, 9 - instep lateral side, 10 - anterior tarsal protrusion point, 11 - first metatarsophalangeal joint outer protrusion point, 12 - foot forepalm lateral contour, 13 - foot heel lateral contour, 14 - forepalm position contact point, 15 - fourth to fifth metatarsophalangeal joint, 16 - adult male medium-sized last pattern, 17 - adult male medium-sized foot contour, 18 - adult male medium-sized footprint map, 19 - adult male medium-sized last pattern split heel line, 20 - adult male medium-sized last pattern central axis, 21 - adult male thumb center point, 22 - adult male first metatarsophalangeal center point, 23 - adult male third metatarsophalangeal center point, 24 - adult male fifth metatarsophalangeal center point, 25 - adult male midfoot lateral side point, 26 - adult male midfoot medial side point, 27 - adult male heel center point, 28 - adult female medium-sized last pattern, 29 - adult female medium-sized foot contour, 30 - adult female medium-sized footprint map, 31 - adult female medium-sized last pattern split heel line, 32 - adult female medium-sized last pattern central axis, 33 - adult female thumb center point, 34 - adult female first metatarsophalangeal center point, 35 - adult female third metatarsophalangeal center point, 36 - adult female fifth metatarsophalangeal center point, 37 - adult female midfoot lateral side point, 38 - adult female midfoot medial side point, 39 - adult female heel center point, 40 - male instep contour, 41 - male metatarsophalangeal joint line, 42 - male first metatarsophalangeal joint outer protrusion point, 43 - male instep anterior tarsal protrusion point, 44 - male fifth metatarsophalangeal joint outer protrusion point, 45 - female instep contour, 46 - female metatarsophalangeal joint line, 47 - female first metatarsophalangeal joint outer protrusion point, 48 - female instep anterior tarsal protrusion point, 49 - female fifth metatarsophalangeal joint outer protrusion point, A1 - male forepalm contact point length, A2 - male heel center point, A3 - male waist hollow point, A4 - male fifth metatarsophalangeal point, A5 - male first metatarsophalangeal point, A6 - male little toe outer protrusion point, A7 - male thumb outer protrusion point, A8 - male toe end point, A9 - male medium-sized last pattern length, A10 - male medium-sized last pattern allowance, A11 - female forepalm contact point length, A12 - female heel center point, A13 - female waist hollow point, A14 - female fifth metatarsophalangeal point, A15 - female first metatarsophalangeal point, A16 - female little toe outer protrusion point, A17 - female thumb outer protrusion point, A18 - female toe end point, A19 - female medium-sized last pattern length,A20 - Women's medium-sized last sample with allowance. Detailed Implementation

[0033] 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.

[0034] Figure 1 This is a schematic diagram illustrating the composition of a diabetic foot pressure threshold testing device according to an embodiment of the present invention. The embodiment of the present invention provides a diabetic foot pressure threshold testing device, comprising:

[0035] Casing 100;

[0036] Top plate 101 is disposed on the top of housing 100;

[0037] The thrust detection unit 120 is located inside the housing 100;

[0038] A foot force gauge 126 is vertically slidably mounted on a thrust detection unit 120. A force probe 127 is mounted on the foot force gauge 126. The force probe 127 is used to contact the foot of a diabetic foot patient to test the pressure threshold.

[0039] A stepper motor 128 is mounted on the thrust detection unit 120 and is used to drive the foot force gauge 126 to move up and down.

[0040] The first controller, electrically connected to the stepper motor 128, is used by the tester to set the moving speed of the foot force gauge 126 and control the start of the stepper motor 128.

[0041] The second controller, electrically connected to the stepper motor 128, is used by diabetic foot patients to control the stepper motor 128 to stop.

[0042] For example, such as Figures 2-4 As shown, the top plate 101 can be made of glass, which makes it easy to observe the operation of the testing device. At the same time, a circular test hole 102 can be set on the left or one side of the top plate 101 to allow the force probe 127 to extend and contact the foot being tested to test the foot pressure threshold. The other foot to be tested is placed on a steel plate of the same height to reduce the weight of the human body on the glass plate and ensure safety.

[0043] In the embodiment of the present application, the bottom surface of the housing 100 is further provided with a base 110, and the thrust detection unit 120 is arranged on the top surface of the base 110. Further, the bottom of the base 110 is provided with a foot pad 111 for anti-skid, so as to prevent skidding and increase the stability and firmness of the base 110.

[0044] The force probe 127 is detachably arranged on the foot force meter 126, so as to conveniently replace the force probe with different materials, shapes and sizes, so as to detect the influence of different stimulation characteristics and stimulation areas on the foot pressure threshold. Preferably, the force probe 127 can be made of aluminum block, and the commonly used shape is cylindrical, and the commonly used cross-sectional size includes 0.5cm 2 , 1.0cm 2 , 2.0cm 2 .

[0045] The front surface of the foot force meter 126 is provided with a display screen 129 for displaying the pressure value obtained by the foot force meter 126 in real time, so as to facilitate the tester to observe the change of the plantar pressure value in real time. Meanwhile, the front surface of the foot force meter 126 is further provided with operation keys 130 such as power on, power off, zero setting, pressure peak, unit conversion, setting and screen flipping. The side surface of the foot force meter 126 is provided with a charging hole for charging the foot force meter 126. In specific use, the range of the foot force meter can be selected as 0-500N according to the foot pressure peak of the diabetic foot patient.

[0046] In the embodiment of the present application, the test device can test the pressure threshold of the plantar and dorsal of the foot of the diabetic foot patient. When the pressure threshold test of the plantar is completed, the tester can trigger the screen flipping key to facilitate the tester to test the dorsal pressure threshold. Specifically, the foot force meter 126 is connected with the panel 125 through a screw, when the test direction needs to be converted, the screw can be removed, then the direction of the foot force meter 126 is flipped, and then the screw is fixed. After the direction of the foot force meter 126 is converted, the foot of the diabetic foot patient can be placed below the foot force meter 126, and then the reading and operation can be performed, and finally the pressure threshold of the lateral side of the foot is tested, the foot force meter 126 needs to be removed, and the tester holds the foot force meter 126 and ensures that the force meter is perpendicular to the test point.

[0047] Both the first and second controllers include up, down, record, and view buttons. When the diabetic foot patient is ready and the foot test point is aligned with the test hole 102 on the top plate 101, the tester selects the moving speed of the force probe 127 through the first controller and controls the force probe 127 to move upward. When the diabetic foot patient feels foot discomfort, they press the record button on the second controller, and the force probe 127 continues to move upward. When the diabetic foot patient feels foot pain, they press the record button on the second controller again and then press the down button to stop the force probe 127 from moving upward and start moving downward. Alternatively, after the diabetic foot patient signals, the tester can use the first controller to move the force probe 127 downward. The diabetic foot patient and the tester can view the recorded foot discomfort and pain pressure thresholds through the view button. For safety reasons, the first controller can be selected at three moving speeds: 0.5 mm / s, 1.0 mm / s, and 2.0 mm / s. Selecting a moving speed of 2.0 mm / s allows the patient to experience the sensation of foot pressure increasing before the expected discomfort and pain occur. Selecting a moving speed of 0.5 mm / s can reduce foot fatigue during the test.

[0048] In one possible embodiment, it further includes: a computer, communicatively connected to the foot force gauge 126, for acquiring pressure threshold data obtained by the foot force gauge 126.

[0049] For example, the bottom surface of the foot force gauge 126 is also provided with a data interface 131 for connecting to a computer, which has a LabVIEW program installed. After the computer acquires the pressure threshold data, it can display a pressure-time curve change graph on the interface and perform data saving operations.

[0050] In one possible embodiment, it further includes: a drive power supply for electrically connecting to the first controller and the second controller and for providing power to the stepper motor 128.

[0051] For example, the drive power supply supplies power to the stepper motor 128, which can control the speed at which the foot force gauge 126 and the force probe 127 move up and down.

[0052] In one possible embodiment, the thrust detection unit 120 includes: a mounting bracket 121; and a transmission assembly disposed on the mounting bracket 121 for moving the foot force gauge 126 under the drive of the stepper motor 128.

[0053] Exemplarily, the transmission assembly comprises: a sliding groove 122 arranged on the side of the mounting bracket 121; a sliding block 123 vertically slidingly arranged in the sliding groove 122, one end of the sliding block 123 being located inside the mounting bracket 121 and the other end extending outside the mounting bracket 121, a stepping motor 128 being in transmission connection with the one end of the sliding block 123 located inside the mounting bracket 121, and the other end of the sliding block 123 being connected with the foot force gauge 126; and a sliding rod 124 arranged on the outer side of the mounting bracket 121, the sliding block 123 being vertically slidingly arranged on the sliding rod 124.

[0054] Specifically, the sliding groove 122 is internally provided with a worm gear and a worm, the stepping motor 128 is connected with the worm gear to drive the worm gear to rotate, the worm gear is screwed together with the worm, and the worm is connected with the sliding block 123. The stepping motor 128 can also be in transmission connection with the sliding block 123 through a screw rod or the like structure to convert the rotation of the stepping motor 128 into the up-and-down movement of the sliding block 123.

[0055] The length of the sliding groove 122 is greater than 10 cm and less than 20 cm, which can meet the requirements of the foot pressure test and ensure the safety of the test.

[0056] In a possible embodiment, the transmission assembly further comprises: a panel 125 arranged at the one end of the sliding block 123 located outside the mounting bracket 121, and the foot force gauge 126 is arranged on the panel 125.

[0057] In a possible embodiment, it further comprises: a potentiometer in electrical connection with the foot force gauge 126, for testing the moving distance of the force probe 127 after contacting the foot of the diabetic foot patient.

[0058] Exemplarily, the potentiometer can record the displacement data of the force probe 127 during the process of contacting and stopping moving the foot of the diabetic foot patient, i.e. the tissue displacement data of the foot of the diabetic foot patient, so as to obtain the pressure time integral index through later data analysis.

[0059] In a possible embodiment, it further comprises: a foot pressure detection positioning template for comparing the foot of the diabetic foot patient to determine the position of the test point.

[0060] Exemplarily, as shown in Figures 5-11 The foot pressure detection positioning template can provide more standard and accurate measurement positioning for the vertical pressure and shear force of the pressure threshold test device.

[0061] In the embodiment of the present application, the foot pressure detection positioning template includes 10 positioning points, the sole includes: the thumb 2, the first metatarsophalangeal joint 3, the second to third metatarsophalangeal joint 4, the heel 5, the fifth metatarsophalangeal joint 6, the medial midfoot, the lateral midfoot, the heel center; the instep includes: the first metatarsophalangeal joint lateral protrusion point 11, the fifth metatarsophalangeal joint lateral protrusion point 8, the anterior tarsal bone protrusion point 10.

[0062] Specifically, the male foot pressure detection positioning template includes 7 foot pressure detection points: the adult male thumb center point 21, the adult male first metatarsophalangeal center point 22, the adult male third metatarsophalangeal center point 23, the adult male fifth metatarsophalangeal center point 24, the adult male lateral midfoot point 25, the adult male medial midfoot point 26, and the adult male heel center point 27. The adult female foot pressure detection positioning template includes 7 foot pressure detection points: the adult female thumb center point 33, the adult female first metatarsophalangeal center point 34, the adult female third metatarsophalangeal center point 35, the adult female fifth metatarsophalangeal center point 36, the adult female lateral midfoot point 37, the adult female medial midfoot point 38, and the adult female heel center point 39.

[0063] The foot pressure detection positioning template includes the adult male foot type superimposed contour, the adult female foot type superimposed contour, the shoe last bottom sample, the instep contour, the common ulcer position of diabetic foot patients, the higher peak pressure area of the sole, the higher peak pressure area of the instep, the foot type anatomical feature point and size. The foot type superimposed contour is combined with the shoe last bottom sample, and the foot type anatomical feature point and size are calibrated in the shoe last bottom sample. The combination of the foot type superimposed contour and the shoe last bottom sample is to place the medium bottom sample (shoe last) on the foot type superimposed contour to compare, so as to determine the range of the positioning points in the pressure detection positioning template.

[0064] The foot type contour line actually marks the contour range of the width of the human foot, and the footprint is the contour range of the sole landing part. Generally, the metatarsophalangeal and heel center width of the shoe last is smaller than the foot type contour and larger than the footprint contour. The adult male foot type superimposed contour is the superposition of 110 foot type contours of the male medium foot length (248-252 mm) and the medium metatarsophalangeal length (243.5-249.5 mm). The adult female foot type superimposed contour is the superposition of 30 foot type contours of the female medium foot length (228-232 mm) and the medium metatarsophalangeal length (221.4-227.4 mm).

[0065] The common ulcer position and ulcer prone position of diabetic foot patients include the toes, the first metatarsophalangeal joint of the sole, the fifth metatarsophalangeal joint of the sole, the first metatarsophalangeal joint lateral protrusion point, the fifth metatarsophalangeal joint lateral protrusion point, and the instep lateral side. The higher peak pressure area of the sole includes the heel area, the metatarsophalangeal joint area, the anterior metatarsal landing part, and the lateral side of the sole (the fifth metatarsal bone). The higher peak pressure area of the instep includes the first metatarsophalangeal joint lateral protrusion point, the fifth metatarsophalangeal joint lateral protrusion point, and the anterior tarsal bone protrusion point.

[0066] Furthermore, there are significant differences in peak pressure among different areas of the foot, with peak pressure in bony areas being significantly higher than in soft tissue areas. When the human body is standing still, the weight load is transferred from the lower limbs through the ankle joint to the calcaneus, and then stress lines are transmitted in three directions: backward to the calcaneal tuberosity, medially and anteriorly along the medial longitudinal arch to the head of the first metatarsal, and laterally and anteriorly along the lateral longitudinal arch to the fifth metatarsal.

[0067] The anatomical features and dimensions of the foot are marked on the shoe last, including the toe tip (100% of foot length); the lateral big toe tip (90% of foot length); the little toe tip (82.5% of foot length); the lateral little toe tip (78% of foot length); the first metatarsophalangeal joint (72.5% of foot length); the fifth metatarsophalangeal joint (63.5% of foot length); the lumbar region (41% of foot length); the heel region (18% of foot length); the metatarsophalangeal circumference (0.7% of foot length + constant); and the basic width (40.3% of metatarsal circumference).

[0068] The sole is the most important of the four surfaces of the foot (plantar surface, medial surface, lateral surface, and dorsum). The method for determining plantar positioning test points is as follows (see reference). Figure 11 :

[0069] Thumb: Draw a tangent line through point C1, and draw a line b parallel to a through point I. Line b intersects CC1 at point J. The midpoint M1 of C1J is the center point of the thumb.

[0070] First metatarsophalangeal joint: Draw a tangent c through point E1, and a line d parallel to c through point I. Line d intersects e at point K. The midpoint M2 of E1K is the center point of the first metatarsophalangeal joint.

[0071] Third metatarsophalangeal joint: Draw a line connecting the midpoints of lines e and f. The midpoint M3 of this line is the center point of the third metatarsophalangeal joint.

[0072] Fifth metatarsophalangeal joint: Draw a tangent g through point F1, and a line h parallel to g through point L. Line h intersects f at point N. The midpoint M4 of F1N is the center point of the fifth metatarsophalangeal joint.

[0073] Medial side of the midfoot: Point G is point M5 on the medial side of the midfoot.

[0074] Lateral midfoot: The midpoint of G1 and G2 is M6, which is the lateral midfoot point.

[0075] Heel center: Point H0 is the heel center point M7.

[0076] The plantar pressure detection point positioning template in the application includes a last bottom sample length, a margin, a toe end point part, a big toe outward protruding point part, a little toe outward protruding point part, a first metatarsophalangeal part, a front palm contact point, a fifth metatarsophalangeal part, a waist hollow part, and a heel center part. The last bottom sample length is the length of the last bottom axis; the margin is the length from the toe end point to the front end point of the last bottom on the last bottom axis; the toe end point part is the front end point part of the longest toe of the human foot; the big toe outward protruding point part is the most outward protruding part of the big toe of the human foot; the little toe outward protruding point part is the most outward protruding part of the little toe of the human foot; the first metatarsophalangeal part is the first metatarsophalangeal joint part of the human foot; the fifth metatarsophalangeal part is the fifth metatarsophalangeal joint part of the human foot; the waist hollow part is between the heel center and the fifth metatarsophalangeal part of the last, and is determined by the fifth metatarsal tuberosity point of the human foot; the heel center part is the center part of the force of the heel of the human foot; the metatarsal circumference is the circumference length between the first metatarsophalangeal inner width point and the fifth metatarsophalangeal outer width point; and the basic width is the first metatarsophalangeal inner width + the fifth metatarsophalangeal outer width.

[0077] Figure 11 The application also includes a last bottom axis AO and a heel dividing line LO. The last bottom axis is the line connecting the second toe center and the heel center point; and the heel dividing line is the vertical bisector of the full width of the heel center.

[0078] The application also provides a diabetic foot foot pressure threshold testing method, which includes the following steps:

[0079] The foot of the diabetic foot patient is compared with the foot pressure detection positioning template to determine the position of the test point;

[0080] The test point of the foot of the diabetic foot patient is placed at the position corresponding to the force probe 127, and the pressure threshold of the foot of the diabetic foot patient is tested by the diabetic foot foot pressure threshold testing device.

[0081] Although the preferred embodiments of the application have been described, those skilled in the art can make additional changes and modifications to the embodiments once they know the basic inventive concept. Therefore, the appended claims are intended to be interpreted as including the preferred embodiments and all changes and modifications falling within the scope of the application.

[0082] Obviously, those skilled in the art can make various modifications and variations to the application without departing from the spirit and scope of the application. Thus, if these modifications and variations of the application fall within the scope of the claims of the application and their equivalent technologies, the application also intends to include these modifications and variations.

Claims

1. A device for testing the foot pressure threshold in diabetic patients, characterized in that, include: Outer shell (100); A top plate (101) is disposed on the top of the housing (100); A thrust detection unit (120) is disposed inside the housing (100); A foot force gauge (126) is vertically slidably mounted on the thrust detection unit (120). A force probe (127) is mounted on the foot force gauge (126). The force probe (127) is used to contact the foot of a diabetic foot patient to test the pressure threshold. A stepper motor (128) is mounted on the thrust detection unit (120) and is used to drive the foot force gauge (126) to move up and down; The first controller, electrically connected to the stepper motor (128), is used by the tester to set the moving speed of the foot force gauge (126) and control the start of the stepper motor (128); The second controller, electrically connected to the stepper motor (128), is used by a diabetic foot patient to control the stepper motor (128) to stop; The thrust detection unit (120) includes: Mounting bracket (121); A transmission assembly is mounted on the mounting bracket (121) for moving the foot force gauge (126) under the drive of the stepper motor (128); The transmission assembly includes: A slide (122) is provided on the side of the mounting bracket (121); The slider (123) is vertically slidably disposed in the slide groove (122), with one end of the slider (123) located inside the mounting bracket (121) and the other end extending outside the mounting bracket (121). The stepper motor (128) is connected to the end of the slider (123) located inside the mounting bracket (121), and the end of the slider (123) located outside the mounting bracket (121) is connected to the foot force gauge (126). A slide bar (124) is disposed on the outer side of the mounting bracket (121), and the slider (123) is vertically slidably disposed on the slide bar (124); The slide groove (122) is provided with a worm wheel and a worm. The stepper motor (128) is connected to the worm wheel to drive the worm wheel to rotate. The worm wheel and the worm are screwed together. The worm is connected to the slider (123). The transmission assembly also includes: A panel (125) is disposed at one end of the slider (123) located outside the mounting bracket (121), and the foot force gauge (126) is disposed on the panel (125).

2. The diabetic foot pressure threshold testing device according to claim 1, characterized in that, Also includes: A computer is communicatively connected to the foot force gauge (126) to acquire pressure threshold data obtained by the foot force gauge (126).

3. The diabetic foot pressure threshold testing device according to claim 1, characterized in that, Also includes: A drive power supply is used to electrically connect to the first controller and the second controller and to provide power to the stepper motor (128).

4. The diabetic foot pressure threshold testing device according to claim 1, characterized in that, Also includes: A potentiometer, electrically connected to the foot force gauge (126), is used to test the movement distance of the force probe (127) after it comes into contact with the foot of a diabetic foot patient.

5. The diabetic foot pressure threshold testing device according to claim 1, characterized in that, Also includes: Foot pressure testing positioning template, used to compare the feet of diabetic foot patients to determine the location of test points.

6. A method for testing the foot pressure threshold in diabetic foot, characterized in that, include: The feet of diabetic foot patients are compared with foot pressure testing positioning templates to determine the location of test points; The test point on the foot of the diabetic foot patient is placed at the position corresponding to the force probe (127), and the pressure threshold of the foot of the diabetic foot patient is tested by the diabetic foot pressure threshold testing device according to any one of claims 1-5.

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