Intelligent transverse drive device for sensors used in arterial blood pressure or blood flow detectors

Abstract

The present invention provides an intelligent transverse driving device for a sensor of an arterial blood pressure or blood flow detector (10), comprising: a fixed base; a transverse motor (21), the transverse motor (21) being fixedly arranged on the fixed base; a screw rod (33), the screw rod (33) being coaxially connected to a transverse motor shaft (22) of the transverse motor (21), so that the screw rod (33) and the transverse motor shaft (22) rotate synchronously; a nut (36), the nut (36) being combined with the screw rod (33), so that the rotational movement of the screw rod (33) is converted into the transverse movement of the nut (36); and a slider assembly (55), the slider assembly (55) being provided with a sensor seat (71) for accommodating the sensor, and the slider assembly (55) being connected to the nut (36), so that the transverse movement of the nut (36) drives the slider assembly (55) to move transversely. The intelligent transverse driving device of the present invention can accurately position the sensor, so that the blood pressure or blood flow detection is more accurate.

Description

Technical Field

[0001] The present invention relates to the technical field of medical devices, and in particular to an intelligent transverse driving device for a sensor of an arterial blood pressure or blood flow detector. Background Art

[0002] Common methods of blood pressure monitoring include auscultatory cuff blood pressure monitoring, electronic blood pressure meter blood pressure monitoring and invasive arterial blood pressure monitoring. The auscultatory cuff blood pressure monitoring and electronic blood pressure meter blood pressure monitoring cannot continuously monitor blood pressure changes and have low detection accuracy. Although the invasive arterial blood pressure monitoring method can obtain continuous real-time monitoring of blood pressure with high accuracy, it directly measures arterial blood pressure by inserting an arterial catheter into the artery, which intervenes in the human body and can easily cause subcutaneous hematoma and infection. Therefore, its application has obvious limitations.

[0003] The recently developed non-invasive arterial blood pressure monitoring technology has obvious advantages. It uses an arterial blood pressure monitoring system, including an arterial blood pressure detector that directly collects arterial pressure and a data processing host. The arterial blood pressure detector has a sensor, which is located on the radial artery of the human arm to sense arterial pressure. Through appropriate data compensation, more accurate blood pressure test results can be obtained. This non-invasive arterial blood pressure monitoring technology is simple to operate, can obtain real-time and continuous test results, and has high test accuracy. It does not require intervention in the human body, so it has good application prospects.

[0004] Using an arterial blood pressure detector to detect blood pressure requires accurate positioning of the sensor. It is expected that the sensor is positioned at the location where the radial artery pulsates the strongest, and that the sensor applies appropriate pressure to the radial artery above the location where the radial artery pulsates the strongest, so as to accurately sense the arterial pressure. The accuracy of the sensor positioning directly affects the accuracy of the test results, and is therefore crucial. Summary of the invention

[0005] The object of the present invention is to at least partially overcome the defects of the prior art and to provide an intelligent transverse drive device for a sensor of an arterial blood pressure or blood flow detector.

[0006] The purpose of the present invention is also to provide an intelligent lateral drive device for a sensor of an arterial blood pressure or blood flow detector to assist in accurately positioning the sensor of the arterial blood pressure or blood flow detector so that the sensor can be positioned at the position on the radial artery where the pulsation is strongest.

[0007] The present invention also aims to provide an intelligent transverse drive device for a sensor of an arterial blood pressure or blood flow detector, so that the arterial blood pressure or blood flow detector can quickly find the position with the strongest pulsation on the radial artery.

[0008] Another object of the present invention is to provide an intelligent transverse driving device for a sensor of an arterial blood pressure or blood flow detector to improve the detection accuracy of the arterial blood pressure or blood flow detector.

[0009] To achieve the above purpose or one of the purposes, the technical solution of the present invention is as follows:

[0010] An intelligent transverse driving device for a sensor of an arterial blood pressure or blood flow detector, the transverse driving device comprising:

[0011] Fixed substrate;

[0012] A transverse motor, wherein the transverse motor is fixedly arranged on a fixed base;

[0013] A screw rod, the screw rod is coaxially connected to the transverse motor shaft of the transverse motor so that the screw rod and the transverse motor shaft rotate synchronously;

[0014] A nut, the nut being combined with the screw rod so that the rotational movement of the screw rod is converted into a lateral movement of the nut; and

[0015] The slider assembly is provided with an inductor seat for accommodating the inductor, and the slider assembly is connected to the nut, so that the lateral movement of the nut drives the slider assembly to move lateral.

[0016] According to a preferred embodiment of the present invention, the transverse drive device further comprises a guide rail, the fixed base is provided with a guide rail hole, and a slideway is provided in the slider assembly;

[0017] The guide rail is axially fixed on the fixed base through the guide rail hole, the longitudinal extension direction of the guide rail is parallel to the longitudinal extension direction of the screw rod, and the guide rail extends into the slideway, so that the slider assembly can slide along the guide rail.

[0018] According to a preferred embodiment of the present invention, the fixed base includes a transverse motor seat, which is used to receive the transverse motor, and a positioning plate is provided on one side of the transverse motor seat close to the transverse motor shaft, and a hole is provided on the positioning plate for the transverse motor shaft to pass through.

[0019] According to a preferred embodiment of the present invention, a positioning column and a circuit board fixing hole are provided on the fixing base, the positioning column is used to be inserted into the positioning hole of the circuit board, and the circuit board fixing hole is used to cooperate with the fixing hole of the circuit board to fix the circuit board on the fixing base.

[0020] According to a preferred embodiment of the present invention, the transverse drive device further comprises a drive hub, which is circumferentially fixed to the transverse motor shaft;

[0021] The end of the screw rod close to the transverse motor shaft is provided with a connector;

[0022] Two symmetrical protruding wings are arranged on the outer circumference of the driving wheel hub, and two symmetrical wheel hub clamping grooves are arranged on the outer circumference of the connecting head, and the two wings are respectively adaptively arranged in the wheel hub clamping grooves.

[0023] According to a preferred embodiment of the present invention, the fixed base includes a receiving portion for receiving the slider assembly and the sensor seat.

[0024] According to a preferred embodiment of the present invention, the nut includes a slider slot, and the slider assembly is provided with an ear piece, and the ear piece is embedded in the slider slot, so that the nut and the slider assembly are fixed along the axial direction of the screw rod.

[0025] According to a preferred embodiment of the present invention, a guide rail frame is provided on the fixed base, the guide rail hole is located on the guide rail frame, and an additional guide rail frame is also provided on the nut, the additional guide rail frame is provided with additional guide rail holes, and the guide rail extends through the additional guide rail hole in a sliding fit.

[0026] According to a preferred embodiment of the present invention, a first sensing sheet and a second sensing sheet are provided on the nut, and the first sensing sheet and the second sensing sheet are used to cooperate with a first position sensor and a second position sensor on the circuit board respectively to sense the lateral position of the nut.

[0027] According to a preferred embodiment of the present invention, a support end is provided at one end of the screw rod away from the transverse motor shaft, and the support end can rotate freely relative to the screw rod, and the support end is used to support the end of the screw rod away from the transverse motor shaft.

[0028] According to a preferred embodiment of the present invention, a connecting hole is provided on a side of the slider assembly away from the transverse motor, and the transverse drive device further comprises a pin and a pulley, wherein the pulley is rotatably provided on the pin, and the pin is axially fixed to the connecting hole of the slider assembly;

[0029] A pulley track is arranged on one side of the fixed base away from the transverse motor;

[0030] The pulley is combined with the pulley track so that the pulley can translate along the pulley track.

[0031] According to a preferred embodiment of the present invention, the pulley track is a linear groove, and the pulley is embedded in the linear groove.

[0032] According to the intelligent transverse driving device of the sensor for the arterial blood pressure or blood flow detector of the present invention, the sensor can be driven to move back and forth on the wrist of the person to be detected, so as to determine the position with the strongest pulse pulsation according to the signal values ​​sensed by the sensor at different positions, and then the sensor is moved and stopped above the position with the strongest pulse pulsation by using the transverse driving device. Therefore, the intelligent transverse driving device of the sensor for the arterial blood pressure or blood flow detector of the present invention can assist in accurately and quickly positioning the sensor of the arterial blood pressure or blood flow detector; because the sensor is accurately positioned, the detection accuracy of the arterial blood pressure or blood flow detector is higher. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] Figure 1 is a three-dimensional schematic diagram of an arterial blood pressure detector according to an embodiment of the present invention;

[0034] Figure 2 A partially exploded view of a transverse driving device of a sensor for an arterial blood pressure detector according to an embodiment of the present invention is shown;

[0035] Figure 3 The figure shows the combination state of the fixed base and the transverse motor of the transverse driving device of the sensor for the arterial blood pressure detector according to the embodiment of the present invention;

[0036] Figure 4 Shown in Figure 3 Assembly of the drive hub on the foundation;

[0037] Figure 5 Shown in Figure 4 Assembly of screw rod and nut assembly on the basis;

[0038] Figure 6 The figure shows the assembly of the transverse driving device of the sensor for the arterial blood pressure detector and the first housing according to the embodiment of the present invention;

[0039] Figure 7 A partially exploded view of a vertical driving device of a sensor for an arterial blood pressure detector according to an embodiment of the present invention is shown;

[0040] Figure 8 Shown in Figure 7 Assembly of the articulated shaft on the foundation;

[0041] Fig. 9 Shown in Figure 7 Assembly of the screw shaft and nut block assembly on the basis;

[0042] Fig.10 Shown in Figure 7 Assembly of idler wheel on foundation;

[0043] Fig.11 Shown in Figure 7 Assembly of the pulley assembly on the basis;

[0044] Fig.12 The assembly part of the vertical driving device of the sensor for the arterial blood pressure detector according to the embodiment of the present invention is shown;

[0045] Fig.13 The figure shows the assembly of the vertical driving device of the sensor for the arterial blood pressure detector and the first housing according to the embodiment of the present invention;

[0046] Fig.14 The assembled blood pressure detection sensor driving device according to the embodiment of the present invention and its partial enlarged view are shown;

[0047] Fig.15 The first side of the circuit board of the blood pressure detection sensor driving device according to the embodiment of the present invention is shown;

[0048] Fig.16 The second side of the circuit board of the blood pressure detection sensor driving device according to the embodiment of the present invention is shown; and

[0049] Fig.17 A block diagram showing a method for positioning a blood pressure detection sensor according to an embodiment of the present invention is shown. DETAILED DESCRIPTION

[0050] Exemplary embodiments of the present invention are described in detail below in conjunction with the accompanying drawings, wherein the same or similar reference numerals represent the same or similar elements. In addition, in the detailed description below, for ease of explanation, many specific details are set forth to provide a comprehensive understanding of the disclosed embodiments. However, it is apparent that one or more embodiments may also be implemented without these specific details. In other cases, known structures and devices are embodied in a schematic manner to simplify the accompanying drawings.

[0051] First, a basic introduction to the arterial blood pressure monitoring system is given. Generally, the arterial blood pressure monitoring system includes an arterial blood pressure detector and a data processing host, wherein the arterial blood pressure detector has a sensor, which is a pressure sensor. The sensor is used to collect arterial pressure as the basis for calculating the blood pressure of the object being tested. Figure 1 FIG. 4 is a perspective schematic diagram of an arterial blood pressure detector according to an embodiment of the present invention. Figure 1As shown, the arterial blood pressure detector 10 is in the shape of half a bracelet, which is also called a detection bracelet, including a detection arm 11 and a clamping arm 12 opposite to the detection arm 11. When in use, the wrist is placed in the recess of the arterial blood pressure detector, that is, between the detection arm 11 and the clamping arm 12. The arterial blood pressure detector also includes a part connecting the detection arm 11 and the clamping arm 12, in which a locking part 13 is provided. The distance between the detection arm 11 and the clamping arm 12 can be changed, so that the arterial blood pressure detector 10 can be expanded and contracted. The locking part 13 is used to lock the relative position between the detection arm 11 and the clamping arm 12. When the locking part 13 is not locked, the detection arm 11 and the clamping arm 12 can be moved to increase the distance between the two so as to be placed in the wrist. After the arterial blood pressure detector 10 is positioned relative to the wrist, the detection arm 11 and the clamping arm 12 can be locked so that the arterial blood pressure detector 10 is clamped on the wrist. The detection arm 11 is connected with a wire 14, which is used to provide power to the electrical components, motors, etc. in the arterial blood pressure detector 10, and the wire 14 also includes a signal transmission line. The detection arm 11 is assembled from a first shell 111 located at the lower side and a second shell 112 located at the upper side. The driving device (lateral driving device and vertical driving device) described in detail below is located in the shell formed by the first shell 111 and the second shell 112. The first shell 111 is provided with a sensor extension 113 (see Figure 6 ), the sensor extends out from the sensor extending portion 113.

[0052] When in use, the detection arm 11 is positioned on the inner side of the wrist, and the lower side of the detection arm 11 (i.e., the side facing the wrist) is provided with the sensor (not shown, located directly below the detection arm 11), the sensor is in direct or indirect contact with the wrist, and the sensor is positioned on the radial artery of the human arm to sense the arterial pressure. A more accurate blood pressure detection result can be obtained through appropriate data compensation. By adopting this blood pressure monitoring technology, real-time and continuous detection results can be obtained, and the detection accuracy is high. Moreover, it does not require intervention in the human body, and is a non-invasive detection. As described in the background technology section, in radial artery blood pressure detection, it is very important to find the position of the strongest pulsation on the radial artery and apply appropriate pressure on the radial artery. Therefore, the present invention provides a drive device to move the sensor to properly position the lateral position and vertical position of the sensor.

[0053] The driving device of the present invention is disposed in the detection arm 11 . The following describes the structure and connection relationship of the driving device in the detection arm 11 in the order of the assembly process of the components in the detection arm 11 .

[0054] Figure 2A part of the transverse drive device is shown. The fixed base is located at the lower side, which will be fixed on the first housing 111. A transverse motor seat 24 is provided on one side of the fixed base. The transverse motor seat 24 is concave and is used to receive the transverse motor 21. A positioning plate 25 is provided on the side of the transverse motor seat 24 close to the transverse motor shaft 22. The positioning plate 25 extends upward from the transverse motor seat 24. The positioning plate 25 is provided with a hole for the transverse motor shaft 22 to pass through. The positioning plate 25 is used for the transverse motor 21 to rest against it. The middle part of the fixed base is concave to form a receiving portion 30, which is used to receive the slider assembly 55 and the sensor seat 71 to be described later.

[0055] A guide rail frame 26 is provided on the side of the transverse motor seat 24 away from the positioning plate 25 and close to the transverse motor seat 24. The guide rail frame 26 is provided with a guide rail hole 27 for supporting the guide rail 85. The guide rail frame 26 is provided with a positioning column 28. A circuit board fixing hole 29 is provided on the other side of the fixed base, which is designed for the installation and fixing of the circuit board. A pulley track 31 is provided on the side opposite to the transverse motor seat 24. The transverse motor 21 includes a transverse motor shaft 22. The transverse motor 21 is also provided with a transverse motor cable 23, which provides power transmission and signal transmission. The transverse motor 21 can be fixed to the transverse motor seat 24 by gluing, or alternatively, the transverse motor 21 can be fixed by other additional connection means.

[0056] like Figure 4 As shown, the transverse drive device further includes a drive hub 32, which is circumferentially fixed to the transverse motor shaft 22. Specifically, a flat portion is provided on the transverse motor shaft 22, and the drive hub 32 has an axial hole, on which a corresponding flat portion is provided; and two symmetrical protruding fins are provided on the outer circumference of the drive hub 32. Figure 5 The screw rod 33 and the nut 36 are introduced. The nut is also used as a slider connecting frame and connected to the slider assembly. One end of the screw rod 33 is a connector 34, and the other end is a support terminal 35. The connector 34 is cylindrical, and the inner diameter of the connector 34 is slightly larger than the outer diameter of the drive hub 32. The connector 34 is sleeved on the drive hub 32, and the drive hub 32 is inserted into the connector 34 along the insertion direction a. Two symmetrical hub slots b are arranged on the outer periphery of the connector 34, and the two fins of the drive hub 32 are respectively arranged in the hub slots b. The support terminal 35 can rotate freely relative to the screw rod 33, and the support terminal 35 is used to support the end of the screw rod 33 away from the transverse motor shaft 22. Through the connection between the connector 34 and the drive hub 32, the screw rod 33 is coaxially connected to the transverse motor shaft 22 of the transverse motor 21, so that the screw rod 33 and the transverse motor shaft 22 rotate synchronously.

[0057] A nut 36 is provided on the screw rod 33, and the nut 36 is combined with the screw rod 33 so that the rotational movement of the screw rod 33 is converted into the lateral movement of the nut 36. An additional guide rail frame 37 is provided on the nut 36, and an additional guide rail hole 38 is provided on the additional guide rail frame 37. The guide rail 85 extends through the additional guide rail hole 38 in a sliding fit. The additional guide rail hole 38 and the guide rail hole 27 on the aforementioned fixed base support the guide rail 85. The nut 36 can be made of plastic material.

[0058] At this point, most of the components of the transverse drive device have been introduced. The assembled components can be fixed to the first housing 111 by screws 39. In addition to the components introduced above, the transverse drive device also includes a slider assembly 55, on which a sensor seat 71 for accommodating a sensor is provided, and the slider assembly 55 is connected to the nut 36, so that the lateral movement of the nut 36 drives the slider assembly 55 to move lateral (see Figure 7 , 8 ). Regarding the connection between the slider assembly 55 and the nut 36, the nut 36 includes a slider slot, and the slider slot is between Figure 6 The slider assembly 55 is provided with an ear piece 93 , which is embedded in the slider slot, so that the nut 36 and the slider assembly 55 are fixed along the axial direction of the screw rod 33 .

[0059] The slider assembly 55 is slidably connected to the fixed base through the guide rail 85. The guide rail 85 passes through the guide rail hole 27 on the fixed base, then passes through the slideway 56 provided in the slider assembly 55, and then passes through the additional guide rail hole 38. The guide rail 85 is then fixed by the guide rail retaining ring 86 (see Fig.13 ), the longitudinal extension direction of the guide rail 85 is parallel to the longitudinal extension direction of the screw rod 33. The slideway 56 is located on the side of the slider assembly 55 that is biased towards the transverse motor 21. The slider assembly 55 is supported by a pulley 59 on the side opposite to the transverse motor 21. A connecting hole 57 is provided on the side of the slider assembly 55 that is away from the transverse motor 21. The transverse driving device also includes a pin 58 and a pulley 59. The pulley 59 is rotatably provided on the pin 58. The pin 58 is axially fixed to the connecting hole 57 of the slider assembly 55. Specifically, the pin 58 penetrates into the connecting hole 57, and then the pin 58 is positioned by a pulley retaining ring 60. As mentioned above, a pulley track 31 is provided on the side of the fixed base that is away from the transverse motor 21. The pulley 59 is combined with the pulley track 31 so that the pulley 59 can translate along the pulley track 31, wherein the pulley track 31 is a linear groove, and the pulley 59 is embedded in the linear groove.

[0060] In this way, the slider assembly 55 can slide along the guide rail 85 and the pulley track 31 under the drive of the nut 36 (or slider connecting frame) to achieve lateral movement.

[0061] The driving path of the transverse driving device to drive the sensor to move transversely is: transverse motor 21 - transverse motor shaft 22 - driving hub 32 - connector 34 - screw rod 33 - nut 36 - sliding assembly 55 - sensor seat 71 - sensor.

[0062] The fixing base is provided with a positioning column 28 and a circuit board fixing hole 29. Fig.15 The circuit board shown is provided with a positioning hole 88 and a fixing hole 89, the positioning column 28 is inserted into the positioning hole 88 of the circuit board 87, and the circuit board fixing hole 29 cooperates with the fixing hole 89 of the circuit board 87 to fix the circuit board 87 on the fixing base. The screw is passed through the fixing hole 89 and tightened on the circuit board fixing hole 29. Fig.15 The circuit board 87 is shown facing upward so that the back side of the circuit board 87 ( Fig.16 ) faces the slider assembly 55, the nut 36, etc., and a first position sensor 90 and a second position sensor 91 are arranged on the back side. Correspondingly, a first sensing sheet 40 and a second sensing sheet 41 are arranged on the nut 36. The first sensing sheet 40 and the second sensing sheet 41 are used to cooperate with the first position sensor 90 and the second position sensor 91 on the circuit board 87 to sense the lateral position of the nut 36. Figure 6 For example, the position of the nut 36 is approximately between the first position sensor 90 and the second position sensor 91. In this way, the first sensing plate 40 and the second sensing plate 41 on the nut 36 are far away from the first position sensor 90 and the second position sensor 91. When the nut 36 moves to the left, the positions of the first sensing plate 40 and the second sensing plate 41 change accordingly, until the first sensing plate 40 moves to the position of the first position sensor 90 and is sensed by the first position sensor 90. Then, the device knows that the sensor has reached the maximum positive position, and thus the transverse motor 21 can be controlled to stop running; when the nut 36 moves to the right, the positions of the first sensing plate 40 and the second sensing plate 41 change accordingly, until the second sensing plate 41 moves to the position of the second position sensor 91 and is sensed by the second position sensor 91. Then, the device knows that the sensor has reached the maximum negative position, and thus the transverse motor 21 can be controlled to stop running.

[0063] A step counter may be provided at the tail of the transverse motor 21 to record the number of revolutions of the transverse motor 21 , thereby determining the distance moved by the nut 36 / slider assembly 55 / sensor seat 71 .

[0064] It should be noted that, in the present invention, "horizontal" refers to the arm of the detected object as a reference. When the inner side of the wrist is placed upward, the direction on the inner skin of the wrist that is horizontal to (perpendicular to) the arm is the horizontal direction, and the movement along this direction is the horizontal movement; "vertical" refers to the arm of the detected object as a reference. When the inner side of the wrist is placed upward, the direction perpendicular to the inner skin of the wrist is the vertical direction, and the movement along this direction is the vertical movement. When the arm is placed horizontally, the inner side of the wrist is facing upward, and the detection arm 11 is placed horizontally on the wrist, the "horizontal" is the horizontal direction, and the "vertical" is the vertical direction.

[0065] From the attached Figure 7 The vertical driving device of the sensor for the arterial blood pressure detector of the present invention is introduced, which includes the aforementioned fixed base, slider assembly 55, vertical motor 51, screw shaft 67, screw nut block 68 and connecting rod assembly, etc., which together form a vertical driving device. A vertical motor seat 54 is provided on the side of the slider assembly 55 opposite to the slideway 56. The vertical motor seat 54 is concave, with the concave surface facing downward. Figure 7 The slider assembly 55 is cut open, and only a portion of it is shown. Similar to the lateral motor, the vertical motor 51 is fixed in the vertical motor seat 54 by gluing. The vertical motor 51 has a vertical motor shaft 52, and a vertical motor cable 53 is arranged at the tail, which provides power transmission and signal transmission.

[0066] See also Figure 8 , Figure 8 The combined element in the lower left corner of the figure is the sensor part, which includes the sensor seat 71, the connecting rod assembly composed of the first connecting rod 69 and the second connecting rod 70, the rotating shaft 66, the screw shaft 67, and the nut block 68. The sensor is arranged below the sensor seat 71. The lower opening of the sensor seat 71 is for the sensor to be inserted. The annular object on the outer periphery of the sensor seat 71 is a flexible rubber material, which will contact the skin, so a flexible material is selected to play a buffering and protective role; the long strip object on the right side of the sensor seat 71 is the third sensor sheet 94, which will be described later.

[0067] The connection relationship between these components is: the rotating shaft 66 is coaxially connected and fixed with the screw shaft 67, and rotates synchronously; the nut block 68 is combined with the screw shaft 67, so that the rotational movement of the screw shaft 67 can be converted into the lateral movement of the nut block 68; the first connecting rod 69 is linear, including two connecting ends, and the second connecting rod 70 is roughly Y-shaped, including three connecting ends. The first end of the first connecting rod 69 is hinged to the nut block 68, the second end of the first connecting rod 69 is hinged to the first end of the second connecting rod 70, the second end of the second connecting rod 70 is hinged to the slider assembly 55 (described below), and the third end of the second connecting rod 70 is hinged to the sensor seat 71. The third end is located at Figure 8The middle and long object is the lower end of the third sensor sheet 94. It can be seen that when the second end of the second connecting rod 70 is fixed to the slider assembly 55, the lateral movement of the nut block 68 can be converted into a vertical position change of the sensor seat 71.

[0068] A connecting hole is provided on the side of the slider assembly 55 away from the sensor seat 71, and the second end of the second connecting rod 70 is hinged to the connecting hole through the hinge hole 61, specifically by inserting the hinge shaft 62 into the hinge hole 61 and the connecting hole, and then axially fixing the two ends of the hinge shaft 62 through the first retaining ring 63 and the second retaining ring 64.

[0069] The rotating shaft 66 extends through the slider assembly 55, and a first bearing 65 and a second bearing 72 are provided on both sides of the rotating shaft 66, and the first bearing 65 and the second bearing 72 are also provided on the slider assembly 55. The rotating shaft 66 is rotatable in the slider assembly 55 through two bearings, and the rotating shaft 66 is directly connected to the driven wheel 74, see Fig. 9 .

[0070] The vertical drive device includes a driving wheel 79, a driven wheel 74 and a belt 82; the driven wheel 74 is coaxially connected to the rotating shaft 66, the rotating shaft 66 is coaxially connected to the screw shaft 67, and the belt 82 is sleeved on the driving wheel 79 and the driven wheel 74. A baffle 73 is provided between the driven wheel 74 and the second bearing 72, and the rotating shaft 66 passes through the driven wheel 74 and is fixed by the driven wheel baffle ring 75. The driving wheel 79 is coaxially connected to the vertical motor shaft 52, and the driving wheel 79 passes through the driving wheel 79 and then through the gasket 80, and is fixed by the driving wheel baffle ring 81. The driving wheel 79 is a driving wheel with teeth on the outer circumference, the driven wheel 74 is a driven wheel with teeth on the outer circumference, and the belt 82 is a belt with teeth on the inner circumference.

[0071] The vertical drive device further includes an idler wheel 76, an eccentric member 77 and a screw 78; the eccentric member 77 has a cylindrical body and a through hole passing through the cylindrical body, the axis of the through hole is parallel to the axis of the cylindrical body but offset relative to the axis of the cylindrical body; the idler wheel 76 is coaxially sleeved on the eccentric member 77, and the screw 78 passes through the through hole of the eccentric member 77 and is fixed to the slider assembly 55, wherein the idler wheel 76 is located between the driving wheel 79 and the driven wheel 74, and the outer surface of the belt 82 abuts against the outer surface of the idler wheel 76. The idler wheel 76 can be provided to adjust the tightness of the belt 82, such as Fig.13 , 14 As shown, the toothed belt is longer than the outer circumference of the driving wheel and the driven wheel, so it is easier to put it on the driving wheel and the driven wheel, and the idler wheel 76 can be used to tension the belt, which can be achieved by rotating the eccentric 77. The end of the eccentric 77 away from the idler wheel 76 has a flat portion, which is used for tool clamping to rotate the eccentric 77.

[0072] Fig.12 The assembled assembly 84 is shown, which constitutes the majority of the vertical drive device, wherein one end of the signal line 83 is connected to the sensor seat 71, and the other end is connected to the circuit board 87 for signal transmission. As shown in the figure, the screw shaft 67 is parallel to the vertical motor shaft 52 but not coaxial, and the screw shaft 67 and the vertical motor shaft 52 are connected by a pulley transmission.

[0073] The driving path of the vertical driving device to drive the sensor to move vertically is: vertical motor 51 - vertical motor shaft 52 - driving wheel 79 - pulley 82 - driven wheel 74 - rotating shaft 66 - screw shaft 67 - nut block 68 - first connecting rod 69 - second connecting rod 70 - sensor seat 71 - sensor.

[0074] A third sensing sheet 94 is provided near the third end of the second connecting rod 70. The third sensing sheet 94 is used to cooperate with the third position sensor 92 on the circuit board 87 to sense the vertical position of the sensor seat 71. Fig.16 ) faces the third sensing sheet 94, and the third sensing sheet 94 corresponds to the position of the third position sensor 92 on the circuit board 87. When the third end of the second connecting rod 70 moves upward (and the sensor also moves upward), the third sensing sheet 94 is driven to move upward until the third sensing sheet 94 moves to the position of the third position sensor 92 and is sensed by the third position sensor 92. Then, the device knows that the sensor has reached the highest vertical position, and thus the vertical motor 51 can be controlled to stop running. A pedometer can be set at the tail of the vertical motor 51 to record the number of revolutions of the vertical motor 51, and then the distance moved by the sensor base 71 can be determined.

[0075] Fig.13 The figure shows the assembly of the vertical driving device of the sensor for the arterial blood pressure detector according to the embodiment of the present invention and the first housing. The assembly part 84 of the vertical driving device is fixed on the fixed base, that is, fixed on the first housing 111, by inserting the guide rail 85 and the guide rail retaining ring 86 into the slider assembly 55 and placing the pulley 59 into the pulley track 31. In the assembled detection arm 11, the transverse motor shaft 22 of the transverse motor 21 and the vertical motor shaft 52 of the vertical motor 51 are parallel to each other, but extend in opposite directions, that is, the transverse motor shaft 22 extends from the transverse motor 21 in a first direction, and the vertical motor shaft 52 extends from the vertical motor 51 in a second direction opposite to the first direction, and the recesses of the transverse motor seat 24 and the vertical motor seat 54 are in opposite directions, one facing upward and the other facing downward.

[0076] The fixed base, slider assembly, screw rod, screw rod shaft, nut block, connecting rod assembly, etc. of the driving device of the present invention are preferably made of metal materials, and the nut 36 is preferably made of plastic material.

[0077] According to another aspect of the present invention, a method for positioning a blood pressure detection sensor is provided, which is used to position a sensor of an arterial blood pressure detector, wherein the arterial blood pressure detector includes a blood pressure detection sensor driving device, and wherein the positioning method determines the target positioning position of the sensor based on the detection values ​​of the sensor at different positions on a person's wrist.

[0078] Specifically, the positioning method of the blood pressure detection sensor uses an arterial blood pressure detector having a driving device, the driving device including a lateral driving device and a vertical driving device, and the positioning method includes:

[0079] Step A: Wrap the arterial blood pressure detector around the wrist of a person so that the sensor of the arterial blood pressure detector is roughly aligned with the position of the radial artery, and the driving path of the transverse driving device is roughly perpendicular to the radial artery; lock the detection arm 11 and the clamping arm 12;

[0080] Step B: starting the transverse driving device to drive the sensor to move transversely in a direction substantially perpendicular to the radial artery, and recording the signal values ​​sensed by the sensor at different positions during the process;

[0081] Step C: Determine the location where the pulse beats the strongest based on the signal value recorded in step B;

[0082] Step D: The transverse driving device drives the sensor to move and stay above the position where the pulse beats the strongest;

[0083] Step E: starting the vertical driving device to drive the sensor to move vertically in a direction substantially perpendicular to the wrist skin surface, and recording the signal values ​​sensed by the sensor at different vertical positions during the process;

[0084] Step F: Determine the vertical position where the sensor should stay based on the signal value recorded in step E and the expected compression state; and

[0085] Step G: The vertical driving device drives the sensor to move and stay at the vertical position where it should stay.

[0086] Wherein, in step B, the process of the sensor moving transversely in a direction substantially perpendicular to the radial artery includes at least one complete process of the sensor moving from a maximum negative position to a maximum positive position or one complete process of the sensor moving from a maximum positive position to a maximum negative position. Advantageously, the transverse driving device drives the sensor to move transversely back and forth multiple times in a direction substantially perpendicular to the radial artery to accurately capture the position where the pulse pulsation is the strongest.

[0087] In step E, the process of the sensor moving vertically in a direction substantially perpendicular to the wrist skin surface includes at least one complete process of the sensor moving from a position where the radial artery is completely compressed to a highest vertical position or one complete process of the sensor moving from the highest vertical position to a position where the radial artery is completely compressed. Advantageously, the vertical driving device drives the sensor to move vertically back and forth multiple times in a direction substantially perpendicular to the wrist skin surface.

[0088] Further, as mentioned above, the driving device includes a first sensing sheet 40 and a second sensing sheet 41, and the arterial blood pressure detector includes a circuit board 87, and a first position sensor 90 and a second position sensor 91 are provided on a side of the circuit board 87 facing the driving device. The positions of the first position sensor 90 and the second position sensor 91 correspond to the maximum positive position and the maximum negative position, respectively. The first sensing sheet 40 is used by the first position sensor 90 to determine that the sensor has reached the maximum positive position, and the second sensing sheet 41 is used by the second position sensor 91 to determine that the sensor has reached the maximum negative position; therefore, the positioning method includes: when it is sensed that the sensor has reached the maximum positive position or the maximum negative position, the sensor stops moving or moves in the opposite direction.

[0089] Further, as mentioned above, the driving device includes a third sensing sheet 94, and the arterial blood pressure detector includes a circuit board 87, and a third position sensor 92 is provided on a side of the circuit board 87 facing the driving device. The position of the third position sensor 92 corresponds to the highest vertical position of the sensor, and the third sensing sheet 94 is used to determine that the sensor has reached the highest vertical position; therefore, the positioning method includes: when it is sensed that the sensor has reached the highest vertical position, the sensor stops moving or moves in the opposite direction.

[0090] During the process of the arterial blood pressure detector detecting blood pressure, when the signal value sensed by the sensor is abnormal, steps B to G are re-executed. As an example, a vibration sensor may be provided on the arterial blood pressure detector, and when abnormal vibration is sensed, the arterial blood pressure detector is controlled to re-execute steps B to G to re-capture the appropriate position of the sensor; or, the arterial blood pressure detector is controlled to re-execute steps B to G once at a predetermined interval.

[0091] The positioning method may also include a step of adjusting the belt tension of the pulley. As mentioned above, the vertical drive device includes a driving wheel 79, a driven wheel 74 and a belt 82; the driving wheel 79 is coaxially connected to the vertical motor shaft 52 of the vertical motor 51, the driven wheel 74 is coaxially connected to the rotating shaft 66, and the belt 82 is sleeved on the driving wheel 79 and the driven wheel 74; the vertical drive device also includes an idler wheel 76, an eccentric member 77 and a screw 78; the eccentric member 77 has a cylindrical body and a through hole passing through the cylindrical body, the axis of the through hole is parallel to the axis of the cylindrical body but offset relative to the axis of the cylindrical body; the idler wheel 76 is coaxially sleeved on the eccentric member 77, and the screw 78 passes through the through hole of the eccentric member 77 to fix the eccentric member 77, wherein the idler wheel 76 is located between the driving wheel 79 and the driven wheel 74, and the outer surface of the belt 82 abuts against the outer surface of the idler wheel 76. On this basis, the positioning method further includes: loosening the screw 78 to rotate the eccentric member 77 around the screw 78 to adjust the tightness of the belt 82 on the driving wheel 79 and the driven wheel 74 .

[0092] As a preferred embodiment of the present invention, the positioning method also includes: when the positioning is successful, the arterial blood pressure detector emits a prompt sound; and / or when the positioning fails, the arterial blood pressure detector emits a prompt sound and automatically unlocks the detection arm and the clamping arm of the arterial blood pressure detector.

[0093] According to the blood pressure detection sensor driving device and the positioning method of the blood pressure detection sensor of the present invention, the sensor can be driven to move back and forth on the wrist of the person to be detected and to move vertically in a direction perpendicular to the skin surface of the wrist of the person to be detected, so as to determine the position of the strongest pulse pulsation and the vertical position where the sensor should stay according to the signal values ​​sensed by the sensor at different positions, and then the sensor is moved and stopped above the position of the strongest pulse pulsation and at an appropriate vertical position by using the driving device. Therefore, the blood pressure detection sensor driving device and the positioning method of the blood pressure detection sensor of the present invention can assist in accurately and quickly finding the position of the strongest pulsation on the radial artery and applying appropriate pressure to the radial artery; because the sensor is accurately positioned, the detection accuracy of the arterial blood pressure detector is high.

[0094] It should be noted that the embodiments of the present invention take blood pressure detection as an example to illustrate the driving device and positioning method of the present invention, but they are also applicable to blood flow detection, including the detection of hemodynamic parameters.

[0095] Although the embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes may be made to these embodiments without departing from the principles and spirit of the present invention. The scope of application of the present invention is defined by the appended claims and their equivalents.

[0096] List of reference numerals:

[0097] 10 Arterial blood pressure monitor

[0098] 11. Detection Arm

[0099] 12 Clamping arm

[0100] 13 Locking part

[0101] 14 Wire

[0102] 111 First Shell

[0103] 112 Second Shell

[0104] 113 Sensor extension

[0105] 21 Transverse motor

[0106] 22 Horizontal motor shaft

[0107] 23 Horizontal motor cable

[0108] 24 Horizontal motor seat

[0109] 25 Positioning plate

[0110] 26 Rail rack

[0111] 27 Rail holes

[0112] 28 Positioning column

[0113] 29 Circuit board fixing holes

[0114] 30 Accommodation

[0115] 31 Pulley Track

[0116] 32 Drive hub

[0117] 33 Screw

[0118] 34 Connector

[0119] 35 Support end

[0120] 36 nut (slider connection frame)

[0121] 37 Additional rail bracket

[0122] 38 Additional rail holes

[0123] 39 Bolt

[0124] 40 First sensor sheet

[0125] 41 Second sensor sheet

[0126] 51 Vertical Motor

[0127] 52 Vertical motor shaft

[0128] 53 vertical motor cable

[0129] 54 Vertical motor mount

[0130] 55 Slider assembly

[0131] 56 Slide

[0132] 57 Connection hole

[0133] 58 Pin

[0134] 59 Pulley

[0135] 60 Pulley retaining ring

[0136] 61 hinge hole

[0137] 62 Articulated shaft

[0138] 63 First retaining ring

[0139] 64 Second retaining ring

[0140] 65 First bearing

[0141] 66 Rotation axis

[0142] 67 Screw shaft

[0143] 68 Wire block

[0144] 69 First connecting rod

[0145] 70 Second connecting rod

[0146] 71 Sensor holder

[0147] 72 Second bearing

[0148] 73 Blocking piece

[0149] 74 driven wheel

[0150] 75 driven wheel retaining ring

[0151] 76 Idler

[0152] 77 Eccentric

[0153] 78 Screws

[0154] 79 Driving wheel

[0155] 80 Gasket

[0156] 81 driving wheel retaining ring

[0157] 82 Belt

[0158] 83 signal line

[0159] 84 Combination Department

[0160] 85 Guide Rail

[0161] 86 Guide rail retaining ring

[0162] 87 Circuit Board

[0163] 88 Positioning hole

[0164] 89 Fixing holes

[0165] 90 First position sensor

[0166] 91 Second position sensor

[0167] 92 Third position sensor

[0168] 93 Ear piece

[0169] 94 Third sensor sheet

[0170] a Insertion direction

[0171] b Wheel hub slot.

Claims

1. An intelligent driving device for a sensor of an arterial blood pressure or blood flow detector (10), wherein the detector (10) is in the shape of half a bracelet, characterized in that: include: Fixed substrate; A transverse motor (21), wherein the transverse motor (21) is fixedly arranged on a fixed base; A screw rod (33), wherein the screw rod (33) is coaxially connected to a transverse motor shaft (22) of the transverse motor (21), and the screw rod (33) and the transverse motor shaft (22) rotate synchronously; A nut (36), the nut (36) is combined with the screw rod (33), and the rotational movement of the screw rod (33) is converted into a lateral movement of the nut (36); A slider assembly (55), wherein the slider assembly (55) is provided with a sensor seat (71) for accommodating the sensor, the slider assembly (55) is connected to the nut (36), and the lateral movement of the nut (36) drives the slider assembly (55) to move lateral. The driving device further comprises a guide rail (85), a guide rail hole (27) is arranged on the fixed base, and a slideway (56) is arranged in the slider assembly (55); The guide rail (85) passes through the guide rail hole (27) and is axially fixed on the fixed base, the longitudinal extension direction of the guide rail (85) is parallel to the longitudinal extension direction of the screw rod (33), and the guide rail (85) extends into the slideway (56), and the slider assembly (55) slides along the guide rail (85); A connecting hole is provided on the side of the slider assembly away from the transverse motor, a pin shaft is inserted into the connecting hole, a pulley retaining ring (60) is used to position the pin shaft (58), and the pulley is rotatably arranged on the pin shaft; the slideway (56) is located on the side of the slider assembly (55) that is biased towards the transverse motor (21), and the slider assembly (55) is supported by a pulley (59) on the side opposite to the transverse motor (21); a pulley track is provided on the side of the fixed base away from the transverse motor; the pulley (59) is combined with the pulley track (31) so that the pulley (59) can translate along the pulley track (31), and the pulley track (31) is a linear groove, and the pulley (59) is embedded in the linear groove; The driving device further comprises a driving wheel (79), a driven wheel (74) and a belt (82); the driving wheel (79) is coaxially connected to the vertical motor shaft (52) of the vertical motor (51), the driven wheel (74) is coaxially connected to the rotating shaft (66), and the belt (82) is sleeved on the driving wheel (79) and the driven wheel (74); The driving device further comprises an idler wheel (76), an eccentric member (77) and a screw (78); the eccentric member (77) has a cylindrical body and a through hole passing through the cylindrical body, the axis of the through hole is parallel to the axis of the cylindrical body but offset relative to the axis of the cylindrical body; the idler wheel (76) is coaxially sleeved on the eccentric member (77), the screw (78) passes through the through hole of the eccentric member (77) and is fixed on the slider assembly (55), the idler wheel (76) is located between the driving wheel (79) and the driven wheel (74), and the outer surface of the belt (82) abuts against the outer surface of the idler wheel (76), and the idler wheel (76) adjusts the tightness of the belt (82); The rotating shaft (66) is coaxially connected and fixed with the screw shaft (67) and rotates synchronously; the nut block (68) is combined with the screw shaft (67), and the rotational movement of the screw shaft (67) is converted into the lateral movement of the nut block (68); the driving device also includes a connecting rod assembly, the connecting rod assembly includes a first connecting rod (69) and a second connecting rod (70), the first connecting rod (69) is linear and includes two connecting ends, the second connecting rod (70) is roughly Y-shaped and includes three connecting ends, the first end of the first connecting rod (69) is hinged to the nut block (68), the second end of the first connecting rod (69) is hinged to the first end of the second connecting rod (70), the second end of the second connecting rod (70) is hinged to the slider assembly (55), and the third end of the second connecting rod (70) is hinged to the sensor seat (71).

2. The intelligent driving device for the sensor of the arterial blood pressure or blood flow detector (10) according to claim 1, characterized in that: The fixed base comprises a transverse motor seat (24), the transverse motor seat (24) is used to receive the transverse motor (21), and a positioning plate (25) is arranged on one side of the transverse motor seat (24) close to the transverse motor shaft (22), and the positioning plate (25) is provided with a hole for the transverse motor shaft (22) to pass through.

3. The intelligent driving device for the sensor of the arterial blood pressure or blood flow detector (10) according to claim 1, characterized in that: The fixing base is provided with a positioning column (28) and a circuit board fixing hole (29); the positioning column (28) is used to be inserted into the positioning hole (88) of the circuit board (87); the circuit board fixing hole (29) is used to cooperate with the fixing hole (89) of the circuit board (87) to fix the circuit board (87) on the fixing base.

4. The intelligent driving device for the sensor of the arterial blood pressure or blood flow detector (10) according to claim 1, characterized in that: The driving device further comprises a driving hub (32), wherein the driving hub (32) is circumferentially fixed to the transverse motor shaft (22); The end of the screw rod (33) close to the transverse motor shaft (22) is provided with a connector (34); Two symmetrical protruding wings are arranged on the outer periphery of the driving wheel hub (32), and two symmetrical wheel hub slots (b) are arranged on the outer periphery of the connecting head (34), and the two wings are respectively arranged in the wheel hub slots (b) in an adaptive manner.

5. The intelligent driving device for the sensor of the arterial blood pressure or blood flow detector (10) according to claim 1, characterized in that: The fixed base comprises a receiving portion (30) for receiving a slider assembly (55) and a sensor seat (71).

6. The intelligent driving device for the sensor of the arterial blood pressure or blood flow detector (10) according to claim 4, characterized in that: The nut (36) comprises a slider slot, and the slider assembly (55) is provided with an ear piece (93), and the ear piece (93) is embedded in the slider slot, so that the nut (36) and the slider assembly (55) are fixed along the axial direction of the screw rod (33).

7. The intelligent driving device for the sensor of the arterial blood pressure or blood flow detector (10) according to claim 6, characterized in that: A guide rail frame (26) is provided on the fixed base, the guide rail hole (27) is located on the guide rail frame (26), and an additional guide rail frame (37) is also provided on the nut (36), the additional guide rail frame (37) is provided with an additional guide rail hole (38), and the guide rail (85) extends through the additional guide rail hole (38) in a sliding manner.

8. An intelligent driving device for a sensor for an arterial blood pressure or blood flow detector (10) according to any one of claims 1 to 7, characterized in that: The nut (36) is provided with a first sensing sheet (40) and a second sensing sheet (41), and the first sensing sheet (40) and the second sensing sheet (41) are used to respectively cooperate with a first position sensor (90) and a second position sensor (91) on a circuit board (87) to sense the lateral position of the nut (36).

9. An intelligent driving device for a sensor for an arterial blood pressure or blood flow detector (10) according to any one of claims 1 to 7, characterized in that: A support end (35) is provided at one end of the screw rod (33) away from the transverse motor shaft (22); the support end (35) can rotate freely relative to the screw rod (33); and the support end (35) is used to support the end of the screw rod (33) away from the transverse motor shaft (22).

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