Auxiliary lower limb stress position CT (Computed Tomography) shooting device

Abstract

The auxiliary lower limb stress position CT shooting device comprises an upper base plate, a lower base plate, a sliding adjusting supporting plate and a pressure applying displayer, a telescopic adjusting rod is fixed to the end of the upper base plate, and the telescopic adjusting rod is inserted into the lower base plate and fixed into the lower base plate through a locking screw. Two sliding adjusting grooves are formed in a horizontal supporting plate of the sliding adjusting supporting plate, foundation bolts are fixed to the lower base plate and penetrate through the sliding adjusting grooves, and the sliding adjusting grooves of the horizontal supporting plate can relatively slide along the foundation bolts and are fixed to the lower base plate through locking nuts. A pressure applying displayer is detachably fixed to the front face of the vertical supporting plate. The device can simulate the position of a joint when a person stands at a load-bearing position, so that CT shooting of the load-bearing position of the lower limb joint, including ankle joints, knee joints and hip joints, is simulated, and important reference data are provided for evaluation of joint diseases of clinical patients and pre-operation and post-operation evaluation.

Description

Technical Field

[0001] The utility model relates to the field of orthopedic medical equipment, in particular to a device for assisting lower limb stress position CT imaging. Background Art

[0002] Joint diseases are the most common orthopedic diseases and can occur in all age groups and in all joints of the body. Joints are composed of articular surfaces, synovial fluid, joint capsules, ligaments and cartilage. When joints are traumatized or repeatedly worn, osteoarthritis will occur, which manifests as pain during movement and can also lead to joint deformities in severe cases.

[0003] After a joint becomes diseased, the contact area and force transmission between the joints will change, accelerating joint degeneration and further causing changes in the force line and joints of the lower limbs, which is often more obvious when standing and bearing weight.

[0004] However, when performing joint CT and MRI examinations, patients are often in the supine position, when the joints are in a relaxed state, and the examination results obtained cannot accurately reflect the actual situation of the joints and lower limbs when standing and bearing weight. Since there are currently almost no CT machines that can perform standing position photography, how to simulate the weight-bearing state in the supine position is the key to completing stress CT of the lower limb joints. Utility Model Content

[0005] In order to solve the above technical problems, the utility model provides an auxiliary lower limb stress position CT shooting device, which does not affect CT scanning and can be used repeatedly after disinfection. The patient can lie flat on it with his feet placed on the surface of the pressure-applying display, and then adjust the position of the retractable rod, pressure sensor and pulley to simulate the position of the joints when a person stands in a weight-bearing position, thereby completing the simulated weight-bearing CT shooting of the lower limb joints, including the ankle joint, knee joint and hip joint, providing important reference materials for the evaluation of clinical patients' joint diseases and preoperative and postoperative evaluations.

[0006] In order to achieve the above technical effects, the utility model is implemented through the following technical solutions:

[0007] The auxiliary lower limb stress position CT imaging device comprises an upper pad, a lower pad, a sliding adjustment support plate and a pressure application display, a telescopic adjustment rod is fixed to the end of the upper pad, the telescopic adjustment rod is inserted into the lower pad and fixed to the lower pad by a locking screw, the sliding adjustment support plate is an L-shaped plate composed of a vertical support plate and a horizontal support plate fixed vertically, two sliding adjustment grooves are opened on the horizontal support plate of the sliding adjustment support plate, an anchor bolt is fixed to the lower pad, the anchor bolt passes through the sliding adjustment groove, the sliding adjustment groove of the horizontal support plate can slide relatively along the anchor bolt and be fixed to the lower pad by a locking nut, and a pressure application display is detachably fixed to the front of the vertical support plate.

[0008] Furthermore, shoulder limiting columns are fixed on both sides of the right end of the upper pad to prevent the patient's shoulders from sliding to the right when pressure is applied by the feet.

[0009] Furthermore, locking holes are provided at four corners of the pressure applying display, and threaded locking grooves are provided at corresponding positions on the vertical support plate. The pressure applying display is fixed to the vertical support plate through a threaded connection between a threaded rod and the threaded locking groove.

[0010] Furthermore, the pressure-applying display includes a base plate, a cover plate, a pressure pedal, a display screen, a battery, a control circuit board and a pressure sensor. The cover plate is fixed to the base plate, the battery, the control circuit board and the pressure sensor are fixed to the base plate, the display screen is fixed to the cover plate, the battery and the pressure sensor are connected to the control circuit board, a working hole is opened on the cover plate, the pressure sensor extends from the working hole, and the pressure pedal is fixed to the pressure sensor.

[0011] Furthermore, a processing chip, a power module and an analog-to-digital conversion module are fixed on the control circuit board, the battery is connected to the processing chip through the power module, the pressure sensor is connected to the processing chip through the analog-to-digital conversion module, and the display screen is connected to the processing chip.

[0012] Furthermore, the upper pad, the lower pad, and the sliding adjustment support plate are all made of medical hard plastic.

[0013] The beneficial effects of the utility model are as follows: the device does not affect CT scanning and can be used repeatedly after disinfection. The patient can lie flat on it with his feet placed on the surface of the pressure sensor. Then, by adjusting the position of the retractable rod, the pressure sensor and the pulley, the position of the joints when a person is standing and bearing weight can be simulated, thereby completing the simulated weight-bearing CT shooting of the lower limb joints, including the ankle joint, knee joint and hip joint, providing important reference material for the evaluation of clinical patients' joint diseases and preoperative and postoperative evaluations. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] In order to more clearly illustrate the technical solutions of the embodiments of the utility model, the drawings required for describing the embodiments are briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0015] Figure 1 It is a schematic diagram of the overall structure of the auxiliary lower limb stress position CT imaging device;

[0016] Figure 2 It is a schematic diagram of the composition and structure of the auxiliary lower limb stress position CT imaging device;

[0017] Figure 3 It is a schematic diagram of the composition structure of the pressure application display.

[0018] In the accompanying drawings, the components represented by the reference numerals are listed as follows:

[0019] 1-lower pad, 2-upper pad, 3-sliding adjustment support plate, 4-pressure application display, 5-threaded rod, 11-locking screw, 12-jack, 13-anchor bolt, 21-shoulder limit column, 22-telescopic adjustment rod, 31-vertical support plate, 32-horizontal support plate, 33-sliding adjustment slot, 34-locking nut, 41-base plate, 42-covering plate, 43-pressure pedal, 44-control circuit board, 45-battery, 46-pressure sensor, 47-display screen, 48-working opening, 441-processing chip, 442-power module, 443-analog-to-digital conversion module. DETAILED DESCRIPTION

[0020] 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 of 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.

[0021] like Figure 1-2As shown, the auxiliary lower limb stress position CT shooting device includes an upper pad 2, a lower pad 1, a sliding adjustment support plate 3 and a pressure application display 4. A pair of telescopic adjustment rods 22 are fixed at the end of the upper pad 2. The telescopic adjustment rods 22 are inserted into the socket 12 of the lower pad. The locking screw 11 passes through the lower pad and enters the socket 12 to fix the telescopic adjustment rods in the lower pad 1. The sliding adjustment support plate 3 is an L-shaped plate composed of a vertical support plate 31 and a horizontal support plate 32 fixed vertically. Two sliding adjustment grooves 33 are opened on the horizontal support plate 32 of the sliding adjustment support plate. An anchor bolt 13 is fixed on the lower pad 1. The anchor bolt passes through the sliding adjustment groove. The sliding adjustment groove 33 of the horizontal support plate 32 can slide relatively along the anchor bolt 13 and be fixed to the lower pad 1 through a locking nut 34. The front of the vertical support plate is detachably fixed with a pressure application display.

[0022] Shoulder limiting posts 21 are fixed on both sides of the right end of the upper pad 2 to prevent the patient's shoulders from sliding to the right when pressure is applied by the feet.

[0023] The four corners of the pressure applying display are provided with locking holes, and the corresponding positions on the vertical support plate are provided with threaded locking grooves. The pressure applying display is fixed to the vertical support plate through the threaded connection relationship between the threaded rod 5 and the threaded locking grooves.

[0024] like Figure 3 As shown, the pressure applying display 4 includes a base plate 41, a cover plate 42, a pressure pedal 43, a display screen 47, a battery 45, a control circuit board 44 and a pressure sensor 46. The cover plate is fixed to the base plate, the battery, the control circuit board and the pressure sensor are fixed to the base plate, the display screen is fixed to the cover plate, the battery and the pressure sensor are connected to the control circuit board, the cover plate 42 is provided with a working hole 48, the pressure sensor extends from the working hole, and the pressure pedal is fixed to the pressure sensor.

[0025] A processing chip 441, a power module 442 and an analog-to-digital conversion module 443 are fixed on the control circuit board 44. The battery is connected to the processing chip via the power module, the pressure sensor is connected to the processing chip via the analog-to-digital conversion module, and the display screen is connected to the processing chip.

[0026] In this embodiment, the upper pad, the lower pad, and the sliding adjustment support plate are all made of medical hard plastic.

[0027] In this embodiment, the single-chip microcomputer uses a 51-type single-chip microcomputer, the power module uses an AMS1117-3.3V power chip, the power chip converts the voltage transmitted by the battery into a 3.3V working voltage and powers the processing chip; the analog-to-digital conversion module uses an ADC0832 analog-to-digital conversion chip, and the pressure sensor uses a column pressure sensor.

[0028] The specific working application of this device is as follows: the patient lies flat on the upper pad 2 and the lower pad 1, the patient's shoulder should be located on the left side of the shoulder limit rod 21, the position of the upper pad 2 is adjusted according to the patient's height, and then the telescopic adjustment rod 22 is fixed to the lower pad by the locking screw 11. At this time, the patient's position is completed, and then the locking nut 34 is loosened, and the position of the horizontal support plate 32 is slid so that the patient's foot can be against the pressure application display 4 fixed on the vertical support plate 31, and then the patient steps on the pressure pedal 43, and the pressure pedal transmits the pressure to the pressure sensor, and the pressure sensor converts the pressure into an analog electrical signal and transmits it to the analog-to-digital conversion module, and the analog-to-digital conversion module converts it into a digital signal and transmits it to the processing chip, and the processing chip transmits it to the display screen for display, and the patient and medical staff can observe the pressure value and perform CT shooting, thereby obtaining CT image data of lower limb stress position.

[0029] In the description of this specification, the description with reference to the terms "one embodiment", "example", "specific example", etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

Claims

1. A device for assisting lower limb stress position CT imaging, characterized in that: It includes an upper pad, a lower pad, a sliding adjustment support plate and a pressure application display. A telescopic adjustment rod is fixed at the end of the upper pad, the telescopic adjustment rod is inserted into the lower pad and fixed to the lower pad by a locking screw. The sliding adjustment support plate is an L-shaped plate composed of a vertical support plate and a horizontal support plate fixed vertically. Two sliding adjustment grooves are opened on the horizontal support plate of the sliding adjustment support plate. Anchor bolts are fixed on the lower pad, and the anchor bolts pass through the sliding adjustment grooves. The sliding adjustment grooves of the horizontal support plate can slide relatively along the anchor bolts and are fixed to the lower pad by locking nuts. The front of the vertical support plate is detachably fixed with a pressure application display.

2. The auxiliary lower limb stress position CT imaging device according to claim 1, characterized in that: Shoulder limiting columns are fixed on both sides of the right end of the upper pad, which are used to prevent the patient's shoulders from sliding to the right when pressure is applied by the feet.

3. The auxiliary lower limb stress position CT imaging device according to claim 1, characterized in that: The four corners of the pressure applying display are provided with locking holes, and the corresponding positions on the vertical support plate are provided with threaded locking grooves. The pressure applying display is fixed to the vertical support plate through the threaded connection between the threaded rod and the threaded locking groove.

4. The auxiliary lower limb stress position CT imaging device according to claim 2 or 3, characterized in that: The pressure-applying display comprises a base plate, a cover plate, a pressure pedal, a display screen, a battery, a control circuit board and a pressure sensor. The cover plate is fixed on the base plate, the battery, the control circuit board and the pressure sensor are fixed on the base plate, the display screen is fixed on the cover plate, the battery and the pressure sensor are connected to the control circuit board, a working hole is opened on the cover plate, the pressure sensor extends from the working hole, and the pressure pedal is fixed on the pressure sensor.

5. The auxiliary lower limb stress position CT imaging device according to claim 4, characterized in that: A processing chip, a power module and an analog-to-digital conversion module are fixed on the control circuit board. The battery is connected to the processing chip through the power module, the pressure sensor is connected to the processing chip through the analog-to-digital conversion module, and the display screen is connected to the processing chip.

6. The auxiliary lower limb stress position CT imaging device according to claim 1, characterized in that: The upper pad, the lower pad and the sliding adjustment support plate are all made of medical hard plastic.

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