DR (Digital Radiography) auxiliary inspector for knee joints and ankle joints

Abstract

The DR auxiliary examination device comprises a transverse support, parallel extension plates are arranged at the two ends of the transverse support, and limiting installation mechanisms are arranged at the bottoms of the two extension plates respectively and used for being installed on an examination bed. Positioning grooves are formed in the transverse bracket and are used for fixing different positioning fulcrums of a human body when different parts of a patient lying on the examination bed are examined; a motor is arranged on the extension plate, the motor is connected with a traction rope through a transmission mechanism, the other end of the traction rope is connected with a wearable part, and the wearable part and the force applied to the examination part by the positioning groove are opposite; the transverse support and the positioning groove are made of non-developing materials. According to the utility model, while the clinical examination requirement is met, the input time cost and medical resources are reduced, and the examination can be completed more quickly and conveniently.

Description

Technical Field

[0001] This utility model relates to the field of medical imaging technology for the knee and ankle joints, and in particular to a DR auxiliary examination device for the knee and ankle joints. Background Technology

[0002] Currently, DR (Digital Radiography) has become one of the most common and widely used medical examination methods, with advantages such as lower radiation dose and lower price.

[0003] With the continuous development and advancement of medical technology, DR (Digital Radiography) examination methods and patient positions are constantly being innovated and expanded. During examinations, to meet clinical assessment needs, many functional positions are constantly being developed to assist diagnosis. However, some examination positions require external force to assist the examination, which patients cannot complete independently. These examinations require doctors wearing protective gear to accompany patients in the examination room to help them complete the examination. This increases the radiation dose received by medical staff, and the need for doctors to apply pressure means that this examination requires more time and medical resources than usual.

[0004] Designing such auxiliary equipment is necessary because there are many inconveniences in such inspections during daily work. It is necessary to improve these inspections by using auxiliary equipment to make them more convenient and efficient. Utility Model Content

[0005] To address the aforementioned issues, a DR-assisted imaging device was designed based on existing basic equipment to complete lower limb stress imaging.

[0006] The present invention adopts the following technical solution:

[0007] A DR auxiliary examination device for the knee and ankle joints includes a transverse support with parallel extension plates at both ends. The bottom of each extension plate is provided with a limiting installation mechanism for mounting on an examination bed.

[0008] Positioning slots are provided on the horizontal support to fix the patient's body at different positioning fulcrums when examining different parts of the body while lying on the examination bed; a motor is provided on the extension plate, and the motor is connected to a traction rope through a transmission mechanism. The other end of the traction rope is connected to a wearable component, and the force applied to the examination site by the wearable component and the positioning slot is opposite.

[0009] The horizontal support and positioning groove are made of a non-photographic material.

[0010] In this design, the auxiliary examination device is mounted on the examination table via a limiting installation mechanism. A lower limb positioning groove is provided on the transverse support. Since both the transverse support and the positioning groove span the examination table surface, this is the receiving position of the X-ray flat panel receiver. Therefore, the transverse support and the positioning groove are made of a non-radioactive material to avoid interfering with the formation of DR images. Traction ropes or other tension mechanisms can be installed on the extension plates on one or both sides of the transverse support. Installation on one side requires coordination with changes in the patient's position during examination, while installation on both sides does not require such changes. The traction ropes and other tension mechanisms are used alternately. The force applied to the examination site by the wearable component and the positioning groove is opposite, simulating the stress conditions on the examination site and providing DR imaging conditions under stress to complete lower limb stress radiography.

[0011] Preferably, the limiting installation mechanism is a convex bar, which is respectively set on the outer side of the convex part on both sides of the examination bed to restrict the movement of the left and right ends of the transverse support; the motor is set on the top surface of the extension plate, and the center of gravity of the motor is projected on the convex part of the examination bed.

[0012] Optionally, the limiting installation mechanism is a slot that fits and engages with the protrusions on both sides of the inspection bed. As an improvement to the above solution, the positioning groove consists of two protrusions with a certain gap. Optionally, the left or right protrusion can be used as a positioning fulcrum or a limiting fulcrum.

[0013] As an improvement to the above solution, a tension gauge is installed on the traction rope. In this solution, based on the force required for clinical assessment of a patient's condition, the tension gauge is used to determine the current tension level, thereby controlling the start and stop of the motor.

[0014] As an improvement to the above solution, the transmission mechanism is a speed reducer. The speed reducer in this solution provides sufficient tension to prevent the traction rope from retracting.

[0015] As an improvement to the above solution, the wearable component is a ring-shaped strap. The ring-shaped strap design can be used to check the stress on the knee joint drawer area.

[0016] As an improvement to the above solution, the wearable component is a shoe-shaped device with connecting rings at the toe end and / or heel end. This shoe-shaped device is designed to check the force on the ankle joint drawer area.

[0017] This invention fulfills clinical examination needs while reducing time and medical resource investment, enabling faster and more convenient examinations. This device can replace medical personnel in applying external force, avoiding unnecessary X-ray exposure for medical staff accompanying patients. Previously, similar examinations required doctor accompaniment, resulting in wasted time and manpower. This device is simple, lightweight, and easy to operate, allowing a technician to complete most lower limb traction examinations alone, reducing patient waiting time and conserving medical resources. The auxiliary device uses relatively simple and common materials, and its manufacturing method is straightforward, significantly solving the challenges of lower limb traction examinations. The device is lightweight and easy to use, with an overall design that facilitates technician operation, greatly reducing safety hazards during imaging, improving examination efficiency, and facilitating the achievement of examination objectives. Attached Figure Description

[0018] Figure 1 This is one of the structural schematic diagrams of a DR auxiliary examination device for the knee and ankle joints provided in this embodiment of the present invention;

[0019] Figure 2 yes Figure 1 Sectional view at point AA;

[0020] Figure 3 This is a schematic diagram of the structure of a DR auxiliary examination device for knee and ankle joints provided in this embodiment of the utility model for knee joint examination;

[0021] Figure 4 This utility model provides a second schematic diagram of the structure of a DR auxiliary examination device for the knee and ankle joints;

[0022] Figure 5 yes Figure 4 Sectional view at point BB;

[0023] Figure 6 This is a schematic diagram of the structure of a DR auxiliary examination device for examining the knee and ankle joints, provided by an embodiment of this utility model. Detailed Implementation

[0024] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. In this application, the terms "upper," "lower," "left," "right," "front," "rear," "top," "bottom," "inner," "outer," "middle," "vertical," "horizontal," "lateral," and "longitudinal," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. These terms are mainly for better describing the present utility model and its embodiments, and are not intended to limit the indicated device, element, or component to having a specific orientation, or to be constructed and operated in a specific orientation.

[0025] Furthermore, in addition to indicating location or positional relationship, some of the aforementioned terms may also have other meanings. For example, the term "above" may also be used in some cases to indicate a certain dependency or connection relationship. Those skilled in the art can understand the specific meaning of these terms in this utility model according to the specific circumstances.

[0026] See Figure 1 This is one of the structural schematic diagrams of a DR (Digital Radiography) auxiliary examination device for the knee and ankle joints provided by this utility model. It includes a transverse support 1 with parallel extension plates 21 and 22 at both ends. The bottom of each extension plate has a slot 23 for engaging with protrusions 200 on the side edges of the examination bed 100, facilitating quick positioning. These protrusions are higher than the examination bed surface. An X-ray source emits X-rays from above the examination bed to irradiate the human body on the examination bed. An X-ray flat panel receiver located below the examination bed receives the X-rays and converts them into electrical signals, which are then reconstructed by a computer to form medical images of the corresponding human body parts. Therefore, the transverse support is made of a material that can penetrate X-rays, such as wood, to avoid interfering with the image formation of the human body parts by the X-ray flat panel receiver.

[0027] Optionally, see Figure 4 Another installation method for the inspector is to install protrusions 230 on the bottom of each of the two extension plates. After installation, the protrusions are positioned outside the protrusions 200 on both sides of the inspection bed, restricting the left and right movement of the transverse support. A motor is installed on the top surface of the extension plates, with the center of gravity of the motor projected onto the protrusion of the inspection bed. This prevents the inspector from tipping over if only one side of the extension plate has a motor installed.

[0028] The transverse support is equipped with positioning grooves, which are two protrusions 11 with a certain gap. These grooves are used to fix different positioning fulcrums of the body when examining different parts of the patient while lying on the examination bed. The opposing surfaces of the two protrusions form an inverted trapezoid with the transverse support, which can better fit the legs.

[0029] A motor 31 is installed on the extension plate, which is connected to a traction rope 32 through a reducer transmission device. The other end of the traction rope is connected to a loop strap 41. The strap is tied to the lower leg or other parts of the body, forming a two-point opposing force with the positioning fulcrum of the positioning groove on the human body, thereby achieving the purpose of traction of the human body examination area. In this state, DR image capture is performed.

[0030] The motor has four push-button switches: power switch, forward rotation, reverse rotation, and stop. Forward rotation is used to retract the traction rope to apply tension, reverse rotation is used to release the traction rope, and stop is used for normal motor shutdown. In use, the doctor applies tension by pressing the forward rotation button, ensuring the area being examined is in a suitable position before stopping the machine and taking an X-ray.

[0031] A force gauge 33 is installed on the traction rope, and the force gauge is connected to the strap via a hook. The force gauge is used to view the magnitude of the force applied to the part of the body being examined. Depending on the clinical requirements for assessing the patient's condition, too much or too little force will affect the accuracy of the examination results.

[0032] In one embodiment, during the anterior and posterior drawer position examination of the knee joint, the patient lies on their side with the lower leg close to the examination bed placed in the positioning slot of the transverse support. The protrusion rests against the tibia near the femur on the inner side of the bent lower leg. A strap is tied around the middle of the lower leg, and a traction rope is led out from the front of the tibia and pulled by a reducer on an extension plate. The traction point and the positioning fulcrum of the protrusion exert opposite forces, thereby causing the tibia to move forward. The strap is then removed, and another strap on an extension plate is tied around the middle of the lower leg. The reducer located behind the lower leg pulls, causing the tibia to move backward. The anterior and posterior drawer positions of the knee joint are completed. DR images are taken in both of these states.

[0033] Optionally, the traction rope on the strap is positioned radially to the examination site. After the strap is tied to the leg, the traction end connecting the traction rope and the strap can be adjusted to different circumferential positions of the examination site when initially worn. When traction is applied, it will give the examination site an inward or outward rotational force, thereby adjusting the shooting posture of the examination site.

[0034] See Figure 6 In another embodiment, the strap can be replaced with a shoe-shaped device 42, with connecting rings provided at the toe end and the heel end of the shoe-shaped device.

[0035] For the anterior and posterior drawer position examination of the ankle joint, the patient lies on their side with the lower leg close to the examination bed placed in the positioning slot of the transverse support. The protrusion rests against the inner side of the lower leg, close to the ankle bone, where the leg is bent. The hook at the end of the traction rope is connected to the connecting ring at the toe end of the shoe-shaped device. Pulled by a reducer on an extension plate, the traction rope pulls on the toe end of the foot wearing the shoe-shaped device. The traction point and the positioning fulcrum of the protrusion create opposing forces, thus causing the calcaneus to move forward. After untying the connection between the toe end of the shoe-shaped device and the traction rope, the traction rope of the reducer on another extension plate pulls on the heel end of the shoe-shaped device. The traction point and the positioning fulcrum of the protrusion create opposing forces, thus causing the calcaneus to move backward. The anterior and posterior drawer positions of the ankle joint are completed. DR images are taken in both of these positions.

[0036] The above description is the preferred embodiment of this utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the principle of this utility model, and these improvements and modifications are also considered to be within the protection scope of this utility model.

Claims

1. DR assisted checker for knee and ankle joint characterized in that, It includes a transverse support, with parallel extension plates at both ends of the transverse support, and a limiting installation mechanism at the bottom of each of the two extension plates for installation on the examination bed; Positioning slots are provided on the horizontal support to fix the patient's body at different positioning fulcrums when examining different parts of the body while lying on the examination bed; a motor is provided on the extension plate, and the motor is connected to a traction rope through a transmission mechanism. The other end of the traction rope is connected to a wearable component, and the force applied to the examination site by the wearable component and the positioning slot is opposite. The horizontal support and positioning groove are made of a non-photographic material.

2. The DR auxiliary examination device for knee and ankle joints as described in claim 1, wherein the limiting installation mechanism is a convex strip, which is respectively arranged on the outer side of the convex part on both sides of the examination bed to restrict the movement of the left and right ends of the transverse support; the motor is arranged on the top surface of the extension plate, and the center of gravity of the motor is projected on the convex part of the examination bed.

3. The DR auxiliary examination device for knee and ankle joints as described in claim 1, wherein the limiting installation mechanism is a slot, and the slot is adapted to engage with the protrusions on both sides of the examination bed.

4. The DR assisted checker for knee and ankle joint as claimed in claim 1 wherein, The positioning groove consists of two protrusions with a certain gap between them.

5. The DR assistant for knee and ankle as claimed in claim 1 wherein, A tension gauge is installed on the traction rope.

6. The DR assistant for knee and ankle as claimed in claim 1 wherein, The transmission mechanism is a speed reducer.

7. The DR assistant for knee and ankle as claimed in claim 1 wherein, The wearable component is a ring-shaped strap.

8. The DR assistant for knee and ankle as claimed in claim 1 wherein, The wearable component is a shoe-shaped device, with connecting rings at the toe end and / or heel end.

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