Ultrasonic bone density probe with adjustable distance between transmitting and receiving ends

Abstract

The utility model discloses an ultrasonic bone density probe with adjustable distance between transmitting and receiving ends, and specifically relates to the technical field of ultrasonic bone densitometers. The probe comprises a cable, wherein the bottom of the cable is connected with a shell. The utility model can start a motor to drive a rotating rod to rotate forward and reversely through the cooperation of an adjusting mechanism and a limiting component, and drive a gear 2 below to drive a meshing rack 1, and drive a chip 2 to rotate synchronously in a guide seat, so as to change the angle of a sensor at a receiving end; when adjusting the distance between the transmitting and receiving ends, start a telescopic rod to make a gear 2 below misaligned with the rack 1, and at the same time, the rack 2 is meshed with an upper gear 2, and start a motor to drive the rack 2 to drive the guide seat to move, so as to change the distance between the transmitting and receiving end sensors. The probe can be adjusted accordingly according to detection needs, and has a wider application range and stronger practicality; through a slider and a roller, the guide seat can be limited and guided, and friction loss can be reduced, so that the guide seat is easier to move.

Description

Technical Field

[0001] The utility model relates to the technical field of ultrasonic bone density instruments, in particular to an ultrasonic bone density probe with adjustable distance between transmitting and receiving ends. Background Art

[0002] Ultrasonic bone density detection technology has the advantages of low equipment cost, no ionizing radiation, simple and fast, and can reflect the microstructure of bones. It is widely used in medical institutions for fracture risk assessment and early screening of osteoporosis. Ultrasonic bone density probes usually include a set of fixed ultrasonic sensors, in which the transmitter sensor emits ultrasonic waves, which pass through the human bones and are received by the receiver ultrasonic sensor. The sound speed of the ultrasonic waves in the direction parallel to the bones is measured through axial reflection technology, and a set of parameters are calculated to reflect the bone condition.

[0003] Referring to the patent with publication number CN213309882U, an ultrasonic bone density probe with enhanced transmitting end signal comprises a probe housing, a transmitting end sensor and a receiving end sensor arranged in the probe housing, wherein a focusing wedge is arranged on the transmitting end sensor to enhance the convergence of ultrasonic signals of the transmitting end sensor. The ultrasonic bone density probe of the utility model can penetrate thicker subcutaneous tissue by converging ultrasonic waves of the transmitting end sensor to ensure the signal strength received by the receiving end sensor, thereby improving the accuracy of the test data.

[0004] During use, the above-mentioned ultrasonic bone density probe can enhance the signal strength received by the receiving sensor and improve the accuracy of the test data. However, in the actual detection process, due to differences in individual bones, body fat percentage, etc., medical staff need to use the probe to stick on the forearm, calf or finger of the person being tested to find a suitable angle to ensure smooth reception and transmission of ultrasonic signals. However, if the test angle deviates from the standard requirements, the detected ultrasonic data cannot objectively reflect the bone information. In addition, the above-mentioned ultrasonic bone density probe has a fixed size that cannot meet actual needs when facing different testing populations, and its practicality is relatively poor. Utility Model Content

[0005] The utility model aims to provide an ultrasonic bone density probe with adjustable distance between transmitting and receiving ends, so as to solve the problems raised in the above-mentioned background technology.

[0006] In order to solve the above technical problems, the utility model provides the following technical solutions: an ultrasonic bone density probe with adjustable distance between transmitting and receiving ends, comprising a cable, a shell connected to the bottom of the cable, a transmitting end sensor and a receiving end sensor respectively arranged on the left and right sides of the shell, the transmitting end sensor comprising a transmitting end backing layer and a transmitting end matching layer distributed up and down, a chip one being symmetrically arranged between the transmitting end backing layer and the transmitting end matching layer, the receiving end sensor comprising two guide seats, and a rotating shaft being rotatably installed in the guide seat, the receiving end backing layer, the chip two and the receiving end matching layer being sequentially connected to the bottom of the rotating shaft up and down, and one end of the receiving end matching layer being in contact with the inner wall of the guide seat, a shielding layer being provided at the bottom of the shell between the transmitting end sensor and the receiving end sensor, an adjusting mechanism connected to the rotating shaft being provided in the shielding layer, the adjusting mechanism comprising a rotating rod, a chamber being opened inside the shielding layer, the rotating rod being rotatably installed in the chamber, and a motor being connected to the upper end of the rotating rod at the top of the shielding layer.

[0007] Furthermore, the adjustment mechanism also includes a rotating sleeve, and the rotating sleeve is sleeved on the outside of the rotating rod, the inner wall of the rotating sleeve is symmetrically provided with limit strips, and the outer wall of the rotating rod is symmetrically provided with rail grooves adapted to the limit strips, and a gear 2 is sleeved on the upper and lower outer sides of the rotating sleeve respectively, and a rack 2 and a rack 1 are respectively provided on one side of the upper and lower gear 2, and both ends of the rack 2 and the rack 1 pass through the shielding layer, the rack 1 and the rack 2 are meshed with the gear 2, and the other end of the rack 1 passes through two guide seats, and the outer wall of the rotating shaft is sleeved with a gear 1 above the rack 1, and a plurality of tooth grooves meshing with the gear 1 are opened on the top of the rack 1, and one end of the upper rack 2 is fixed to the tops of the two guide seats The swivel sleeve is connected, and the rack two is located between the two gears two, a bracket is sleeved on the outer side of the upper end of the rotating sleeve, and the bracket is rotatably connected to the rotating sleeve, a telescopic rod is symmetrically arranged on the top of the shielding layer, and the telescopic end of the telescopic rod is fixedly connected to one end of the bracket, a support rod is arranged on one side of the bottom of the bracket, and a limit block meshing with the rack two is arranged on one side of the lower part of the support rod, and a limit assembly connected to the rack one and the rack two is arranged between the guide seats, and the angles of the two receiving end sensors can be adjusted according to small detection needs through the adjustment mechanism, or the distance between the receiving end sensor and the transmitting end sensor can be adjusted to make it suitable for detection by different people, with a wider range of application and stronger practicality.

[0008] Furthermore, the limiting assembly includes a support plate, which is fixedly installed between two guide seats, a connecting rod is provided at the bottom of the support plate, and the upper end of the connecting rod is connected to a stop block at the top of the support plate, the lower end of the connecting rod is connected to a clamping block, and the clamping block is meshed with a tooth groove, and a spring is provided on the outer side of the connecting rod between the support plate and the clamping block. Through the limiting, the rack one can be limited, and the positions of the receiving end backing layer, the receiving end matching layer and the chip two can be limited at the same time, so as to avoid the angle of the receiving end sensor changing when the distance between the transceiver end sensors is adjusted.

[0009] Furthermore, rack one is a single-row rack, rack two is a double-row rack, and the number of teeth on both sides of rack two and the structural size are the same as those of rack one to ensure that both are compatible with gear two, and rack two is a double-row rack structure so that it can be restricted and fixed by a limit block to fix the position of the guide seat.

[0010] Furthermore, the chip one, chip two and the motor are connected to the cable through the positive electrode wire and the negative electrode wire, the inner wall surface of the guide seat is arc-shaped, the receiving end matching layer is in contact with the inner wall of the guide seat, the bracket is rotatably connected to the rotating sleeve through a bearing, and the rotating rod is rotatably connected to the inner wall of the chamber through a bearing to supply power, and the connection method between the bracket and the rotating sleeve can support and position the rotating sleeve without affecting the synchronous rotation of the rotating sleeve following the rotating rod.

[0011] Furthermore, sliders are symmetrically provided at the bottom of the guide seat, and rollers are rotatably installed at symmetrical positions on the outside of the sliders. A slide groove that is compatible with the sliders, rollers and structure is opened at the bottom of the shell, and the cross-section of the slide groove is a convex shape, so as to guide and limit the guide seat, reduce friction loss, and facilitate movement.

[0012] Compared with the prior art, the beneficial effects achieved by the utility model are:

[0013] The utility model can start the motor to drive the rotating rod to rotate forward and reverse through the cooperation of the adjustment mechanism and the limit assembly, thereby driving the rotating sleeve and the gear 2 below to drive the meshing rack 1, and then drive the gear 1, and the transmission drive chip 2 to rotate synchronously in the guide seat, so as to change the angle of the receiving end sensor; when adjusting the distance between the transmitting and receiving ends, the telescopic rod is started to make the gear 2 below and the rack 1 misaligned, and at the same time the rack 2 is meshed with the gear 2 above and separated from the limit block, and the motor can be started, and the transmission drive rack 2 drives the two guide seats to move synchronously, so as to change the distance between the transmitting and receiving end sensors, so that the sensors can be adjusted accordingly according to the detection needs, and the application range is wider and the practicality is stronger;

[0014] The utility model can limit and guide the guide seat through the slider and the roller, and reduce friction loss, so that the guide seat is easier to move. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:

[0016] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0017] Figure 2 This utility model Figure 1 A is a schematic diagram of the enlarged structure of the middle part;

[0018] Figure 3 It is a schematic diagram of the structure between the rotating rod, the rotating sleeve and the rack 1 and the rack 2 of the utility model;

[0019] Figure 4 It is a schematic diagram of a partial top-sectional structure between the rotating rod and the rotating sleeve of the utility model;

[0020] In the figure: 1, cable; 2, shell; 3, transmitting end backing layer; 4, transmitting end matching layer; 5, chip 1; 6, guide seat; 7, shaft; 8, receiving end backing layer; 9, receiving end matching layer; 10, chip 2; 11, gear 1; 12, shielding layer; 13, motor; 14, rotating rod; 15, rotating sleeve; 16, gear 2; 17, limit strip; 18, bracket; 19, telescopic rod; 20, rack 1; 21, rack 2; 22, support rod; 23, limit block; 24, connecting rod; 25, stop block; 26, block; 27, spring; 28, slider; 29, support plate. DETAILED DESCRIPTION

[0021] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0022] like Figure 1 - Figure 4 The ultrasonic bone density probe with adjustable transmitting and receiving end distance shown in the figure comprises a cable 1, a shell 2 is connected to the bottom of the cable 1, a transmitting end sensor and a receiving end sensor are respectively arranged on the left and right sides of the shell 2, the transmitting end sensor comprises a transmitting end backing layer 3 and a transmitting end matching layer 4 which are arranged in upper and lower distributions, a chip 1 5 is symmetrically arranged between the transmitting end backing layer 3 and the transmitting end matching layer 4, the receiving end sensor comprises two guide seats 6, and a rotating shaft 7 is rotatably installed in the guide seat 6, a receiving end backing layer 8, a chip 2 10 and a receiving end matching layer 9 are sequentially connected to the bottom of the rotating shaft 7, and one end of the receiving end matching layer 9 is in contact with the inner wall of the guide seat 6, a shielding layer 12 is provided between the transmitting end sensor and the receiving end sensor at the bottom of the shell 2, an adjusting mechanism connected to the rotating shaft 7 is provided in the shielding layer 12, the adjusting mechanism comprises a rotating rod 14, a chamber is opened inside the shielding layer 12, the rotating rod 14 is rotatably installed in the chamber, and the upper end of the rotating rod 14 is connected to a motor 13 at the top of the shielding layer 12.

[0023] In this example, the adjustment mechanism also includes a rotating sleeve 15, and the rotating sleeve 15 is sleeved on the outside of the rotating rod 14, and the inner wall of the rotating sleeve 15 is symmetrically provided with a limit bar 17, and the outer wall of the rotating rod 14 is symmetrically provided with a track groove adapted to the limit bar 17. A gear 2 16 is sleeved on the upper and lower outer sides of the rotating sleeve 15 respectively, and a rack 21 and a rack 1 20 are respectively provided on one side of the upper and lower gear 2 16, and both ends of the rack 2 21 and the rack 1 20 pass through the shielding layer 12, the rack 1 20 and the rack 2 21 are meshed with the gear 2 16, and the other end of the rack 1 20 passes through the two guide seats 6, and the outer wall of the rotating shaft 7 is sleeved with a gear 11 above the rack 1 20, and a plurality of tooth grooves meshing with the gear 11 are opened on the top of the rack 1 20, and one end of the upper rack 21 is fixedly connected to the top of the two guide seats 6, and the rack 2 21 is located between the two gears 2 16, a bracket 18 is sleeved on the outer side of the upper end of the rotating sleeve 15, and the bracket 18 is rotatably connected to the rotating sleeve 15, a telescopic rod 19 is symmetrically arranged on the top of the shielding layer 12, and the telescopic end of the telescopic rod 19 is fixedly connected to one end of the bracket 18. In this example, the telescopic rod 19 is a miniature electric push rod, and the specific size and model can be selected according to actual use needs. A support rod 22 is provided on one side of the bottom of the bracket 18, and a limit block 23 engaged with the rack 21 is provided on one side of the lower part of the support rod 22. A limit assembly connected with the rack 1 20 and the rack 2 21 is provided between the guide seats 6. Through the adjustment mechanism, the angles of the two receiving end sensors can be adjusted according to small detection needs, or the distance between the receiving end sensor and the transmitting end sensor can be adjusted to make it suitable for detection by different people, with a wider range of application and stronger practicality. In this example, the limit assembly includes a support plate 29, which is fixedly installed between the two guide seats 6. A connecting rod 24 is provided at the bottom of the support plate 29, and a stopper 25 is connected to the upper end of the connecting rod 24 and the top of the support plate 29. A block 26 is connected to the lower end of the connecting rod 24, and the block 26 is meshed with the tooth groove. A spring 27 is sleeved between the support plate 29 and the block 26 on the outer side of the connecting rod 24. Through the limit, the rack 1 20 can be limited, and the positions of the receiving end backing layer 8, the receiving end matching layer 9 and the wafer 2 10 are limited at the same time, so as to avoid the angle of the receiving end sensor changing when adjusting the distance between the transceiver end sensors. In this example, the rack 1 20 is a single-row rack, and the rack 2 21 is a double-row rack, and the number of teeth and the structure size on both sides of the rack 21 are the same as those of the rack 1 20, so as to ensure that the two are adapted to the gear 2 16, and the rack 2 21 is a double-row rack structure, so as to cooperate with the limit block 23 to limit and fix it, so as to fix the position of the guide seat 6. In this example, chip 1 5, chip 2 10 and motor 13 are all connected to cable 1 through positive electrode wire and negative electrode wire. The inner wall surface of guide seat 6 is arc-shaped. Receiving end matching layer 9 fits with the inner wall of guide seat 6. Bracket 18 is rotatably connected to rotating sleeve 15 through bearing. Rotating rod 14 is rotatably connected to the inner wall of chamber through bearing for power supply. The connection mode of bracket 18 and rotating sleeve 15 can support and position rotating sleeve 15 without affecting synchronous rotation of rotating sleeve 15 following rotating rod 14.In this example, sliders 28 are symmetrically provided at the bottom of the guide seat 6, and rollers are rotatably installed at symmetrical positions on the outside of the sliders 28. A slide groove that is compatible with the sliders 28, the rollers and the structure is opened at the bottom of the shell 2, and the cross-section of the slide groove is a convex shape, so as to guide and limit the guide seat 6, reduce friction loss, and facilitate movement.

[0024] The working principle of the utility model is as follows: when it is necessary to adjust the angle position of the receiving end sensor during use, the motor 13 can be started to drive the rotating rod 14 to rotate, so that the rotating rod 14 drives the rotating sleeve 15 to rotate by means of the rail groove and the limit strip 17, and the rotating sleeve 15 drives the gear 2 16 to rotate, so that the gear 2 16 below drives the rack 1 20 meshing with it to move, so that the tooth groove on the rack 1 20 drives the gear 1 11 meshing with it to drive the rotating shaft 7 to rotate, so that the rotating shaft 7 drives the receiving end backing layer 8 and the receiving end matching layer 9 and wafer 2 10 rotate in the guide seat 6, and the angle position of the receiving end sensor can be adjusted by the forward and reverse rotation of the motor 13 to adapt to different people's detection use. When the rack 1 20 moves, the tooth groove on it will squeeze and push the block 26, and then push the connecting rod 24 to drive the stopper 25 to move up, and make the block 26 cooperate with the support plate 29 to squeeze the spring 27 until the block 26 moves out of the tooth groove. When the tooth groove of the squeezed block 26 is misaligned with it, the block 26 is restored under the elastic force of the spring 27. When the distance between the transmitting and receiving end sensors is adjusted, the telescopic rod 19 can be started to push the bracket 18 to drive the rotating sleeve 15 to slide down along the rotating rod 14, so that the upper gear 16 is meshed with one side of the rack 21, and the lower gear 16 is dislocated and separated from the rack 120, and the limit block 23 is separated from one side of the rack 21, and then the motor 13 is driven to rotate the rotating rod 14 forward and reversely, so that the gear 16 above can be driven to rotate, so that the gear 16 above can be driven to rotate, so that the meshing rack 21 drives the two connected guide seats 6 to move left and right synchronously, and the rack 120 can be driven to move synchronously until the receiving end sensor is adjusted to the appropriate position mechanism, and the distance between the transmitting end sensor and the receiving end sensor can be adjusted as needed, and its size can be adjusted as needed, so that it can be suitable for more people to detect and use, with a wide range of applications and stronger practicality.

[0025] Finally, it should be noted that the above description is only a preferred embodiment of the utility model and is not intended to limit the utility model. Although the utility model is described in detail with reference to the above embodiments, those skilled in the art can still modify the technical solutions recorded in the above embodiments or replace some of the technical features therein with equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. An ultrasonic bone density probe with adjustable transmitting and receiving end distance, comprising a cable (1), wherein the bottom of the cable (1) is connected to a housing (2), and a transmitting end sensor and a receiving end sensor are respectively arranged on the left and right sides of the housing (2), characterized in that: The transmitter sensor comprises a transmitter backing layer (3) and a transmitter matching layer (4) which are arranged in an upper and lower distribution. A chip one (5) is symmetrically arranged between the transmitter backing layer (3) and the transmitter matching layer (4). The receiver sensor comprises two guide seats (6). A rotating shaft (7) is rotatably installed in the guide seat (6). The bottom of the rotating shaft (7) is connected to the receiver backing layer (8), the chip two (10) and the receiver matching layer (9) in sequence from top to bottom. One end of the receiver matching layer (9) is in contact with the inner wall of the guide seat (6). A shielding layer (12) is provided at the bottom of the shell (2) between the transmitter sensor and the receiver sensor. An adjustment mechanism connected to the rotating shaft (7) is provided in the shielding layer (12). The adjustment mechanism comprises a rotating rod (14). A chamber is provided in the shielding layer (12). The rotating rod (14) is rotatably installed in the chamber. The upper end of the rotating rod (14) is connected to a motor (13) at the top of the shielding layer (12).

2. The ultrasonic bone density probe with adjustable distance between the transmitting and receiving ends according to claim 1, characterized in that: The adjustment mechanism also includes a rotating sleeve (15), and the rotating sleeve (15) is sleeved on the outer side of the rotating rod (14), the inner wall of the rotating sleeve (15) is symmetrically provided with a limit strip (17), and the outer wall of the rotating rod (14) is symmetrically provided with a track groove adapted to the limit strip (17), and the upper and lower outer sides of the rotating sleeve (15) are sleeved with a second gear (16) respectively, and the upper and lower sides of the second gear (16) are respectively provided with a rack second (21) and a rack first (20), and the two ends of the rack second (21) and the rack first (20) pass through the shielding layer (12), the rack first (20) and the rack second (21) are meshed with the gear second (16), and the other end of the rack first (20) passes through the two guide seats (6), and the outer wall of the rotating shaft (7) is sleeved with a gear first (11) above the rack first (20), The top of the rack gear 1 (20) is provided with a plurality of tooth grooves meshing with the gear gear 1 (11); one end of the upper rack gear 2 (21) is fixedly connected to the tops of the two guide seats (6), and the rack gear 2 (21) is located between the two gear gears 2 (16); a bracket (18) is sleeved on the outer side of the upper end of the rotating sleeve (15), and the bracket (18) is rotatably connected to the rotating sleeve (15); a telescopic rod (19) is symmetrically provided on the top of the shielding layer (12), and the telescopic end of the telescopic rod (19) is fixedly connected to one end of the bracket (18); a support rod (22) is provided on one side of the bottom of the bracket (18), and a limit block (23) meshing with the rack gear 2 (21) is provided on one side of the lower part of the support rod (22); and a limit assembly connected to the rack gear 1 (20) and the rack gear 2 (21) is provided between the guide seats (6).

3. The ultrasonic bone density probe with adjustable distance between the transmitting and receiving ends according to claim 2, characterized in that: The limit assembly comprises a support plate (29), the support plate (29) being fixedly mounted between the two guide seats (6), a connecting rod (24) being provided at the bottom of the support plate (29), and a stopper (25) being connected at the upper end of the connecting rod (24) at the top of the support plate (29), a clamping block (26) being connected at the lower end of the connecting rod (24), and the clamping block (26) being meshed with the tooth groove, and a spring (27) being sleeved on the outer side of the connecting rod (24) between the support plate (29) and the clamping block (26).

4. The ultrasonic bone density probe with adjustable distance between the transmitting and receiving ends according to claim 2, characterized in that: The rack one (20) is a single-row rack, the rack two (21) is a double-row rack, and the number of teeth on both sides of the rack two (21) and the structural size are the same as those of the rack one (20).

5. The ultrasonic bone density probe with adjustable distance between the transmitting and receiving ends according to claim 3, characterized in that: The chip 1 (5), the chip 2 (10) and the motor (13) are all connected to the cable (1) via a positive electrode wire and a negative electrode wire; the inner wall surface of the guide seat (6) is arc-shaped; the receiving end matching layer (9) is in contact with the inner wall of the guide seat (6); the bracket (18) is rotatably connected to the rotating sleeve (15) via a bearing; and the rotating rod (14) is rotatably connected to the inner wall of the chamber via a bearing.

6. The ultrasonic bone density probe with adjustable distance between the transmitting and receiving ends according to claim 2, characterized in that: The guide seat (6) is symmetrically provided with sliders (28) at the bottom, and rollers are rotatably mounted at symmetrical positions outside the sliders (28). The housing (2) is provided with a slide groove that is compatible with the sliders (28) and the rollers and the structure, and the cross-section of the slide groove is a convex shape.

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