Knee joint ectropion stress position shooting auxiliary device

Abstract

The utility model relates to the technical field of shooting auxiliary devices, in particular to a knee joint ectropion stress position shooting auxiliary device which comprises a rectangular bed body, a buffering rubber mat is fixedly installed at the lower end of the rectangular bed body, and a stress ectropion mechanism for pushing the knee joint of a patient to move is arranged on the rectangular bed body. Limiting auxiliary mechanisms for improving the comfort level of a patient are arranged at the two ends of the rectangular bed body, the stress eversion mechanism comprises a first sliding groove formed in the rectangular bed body, and a two-way lead screw is movably installed in the first sliding groove. By arranging the stress eversion mechanism and utilizing mutual matching between the sliding convex block and the knee placing platform, when a knee joint stress position sheet is shot, the double knees of a patient can be automatically pushed away to two sides and fixed, so that certain eversion stress is provided, manual operation of medical staff is not needed, the workload of the staff can be reduced, and the working efficiency is improved. The eversion stress can be flexibly adjusted, and discomfort to a patient can be effectively prevented.

Description

Technical Field

[0001] The utility model relates to the technical field of radiography auxiliary devices, in particular to a knee joint valgus stress position radiography auxiliary device. Background Art

[0002] Clinically, before knee joint replacement surgery for patients, it is necessary to take a stress anteroposterior radiograph of the knee joint, which plays a crucial role for orthopedic surgeons to select the surgical plan.

[0003] However, in the prior art, when doctors take stress position radiographs of patients' knee joints, usually medical staff are required to assist in applying valgus stress to the knee joints, and then the patient's legs are bound with straps. Obviously, this not only increases the workload of medical staff, resulting in a reduction in the inspection efficiency, but also easily causes discomfort to patients. Content of the Utility Model

[0004] Aiming at the deficiencies of the prior art, the utility model provides a knee joint valgus stress position radiography auxiliary device, which solves the technical problems that in the prior art, when taking stress position radiographs of knee joints, medical staff need to manually apply valgus stress to patients' knee joints, with low efficiency and easy to cause discomfort to patients, and has the advantages of being able to automatically push and fix the patient's knees to both sides without manual operation by medical staff.

[0005] To solve the above technical problems, the utility model provides the following technical solution: a knee joint valgus stress position radiography auxiliary device, including a rectangular bed body, a buffer rubber pad is fixedly installed at the lower end of the rectangular bed body, a stress valgus mechanism for pushing the patient's knee joint to move is arranged on the rectangular bed body, and limit auxiliary mechanisms for improving the patient's comfort are arranged at both ends of the rectangular bed body. After the patient lies on the rectangular bed body, the stress valgus mechanism will automatically push the patient's knee joints to both sides respectively, and at the same time limit both sides of the knee joints, so as to continuously provide valgus stress. The stress valgus mechanism includes a first chute opened on the rectangular bed body, a bidirectional lead screw is movably installed inside the first chute, sliding bumps are symmetrically arranged on the bidirectional lead screw, a driving component for driving the bidirectional lead screw to rotate is arranged in the middle of the first chute, a lifting round rod is fixedly installed on the sliding bump, a knee placing platform is fixedly installed at the upper end of the lifting round rod, rotating baffles are symmetrically installed on both sides of the knee placing platform. After the patient places the knees of both legs on the two knee placing platforms respectively, the rotating baffles will automatically rotate to the vertical state to limit and clamp both sides of the patient's knees.

[0006] Preferably, a silica gel cushion is detachably installed on the knee placing platform, which can effectively improve the comfort of the patient's legs.

[0007] Preferably, the knee placing platform can move upward under the action of the lifting round rod to help the patient smoothly complete the knee bending action.

[0008] Preferably, a transmission belt for driving the rotating baffle is provided inside the knee placing platform. Initially, the rotating baffle is in a horizontal state. After the patient places the knee joint on the knee placing platform, the two rotating baffles will rotate under the action of the transmission belt, so as to limit and clamp both sides of the patient's knee.

[0009] Preferably, the limit assisting mechanism includes a second chute opened on the rectangular bed body. A double-foot pedal is slidably connected to the second chute. A limit groove is opened on the double-foot pedal. A return spring is arranged inside the second chute. A fixed headrest is arranged on the rectangular bed body. After the patient lies on the rectangular bed body, the feet will be respectively located inside the two limit grooves, and the head will be located above the fixed headrest.

[0010] Preferably, mounting cavities are symmetrically opened on both sides of the fixed headrest. A winding shaft is movably installed inside one mounting cavity, and a rubber sheet winding cylinder is movably installed inside the other mounting cavity. A disposable rubber sheet is wound around the outside of the rubber sheet winding cylinder. One end of the disposable rubber sheet is fixedly connected to the winding shaft. When the winding shaft rotates, the disposable rubber sheet will be automatically wound up.

[0011] Preferably, one end of the return spring abuts against the inner wall of the second chute, and the other end of the return spring contacts the double-foot pedal. After the patient leaves the rectangular bed body, the double-foot pedal will automatically reset under the action of the return spring, so as to prepare for the use of the next patient.

[0012] Preferably, the disposable rubber sheet is located above the fixed headrest, so as to shield and protect the fixed headrest and prevent the patient's head from contaminating the fixed headrest.

[0013] By means of the above technical solution, the utility model provides a knee joint valgus stress position shooting assisting device, which at least has the following beneficial effects:

[0014] 1. By setting the stress valgus mechanism and using the mutual cooperation between the sliding convex block and the knee placing platform, when shooting the knee joint stress position film, the double knees of the patient can be automatically pushed open and fixed to both sides, so as to provide a certain valgus stress. Without manual operation by medical staff, it can not only reduce the workload of the staff, but also flexibly adjust the magnitude of the valgus stress, and can effectively prevent discomfort to the patient.

[0015] 2. By setting the limit assisting mechanism and using the mutual cooperation between the second chute and the double-foot pedal, the distance between the double-foot pedal and the knee placing platform can be freely changed, which can be applicable to patients of different heights and is convenient to use. Moreover, by automatically winding up the disposable rubber sheet by the winding shaft, it can not only prevent the fixed headrest from being contaminated by the patient's hair, but also eliminate the need for medical staff to manually replace the rubber sheet. Brief Description of the Drawings

[0016] The drawings described herein are provided to further understand the present application and form a part of the present application. The illustrative embodiments of the present application and their descriptions are used to explain the present application and do not constitute an improper limitation of the present application. In the drawings:

[0017] Figure 1 is a three-dimensional view of the overall structure of the present utility model Figure 1 ;

[0018] Figure 2 is a three-dimensional view of the overall structure of the present utility model Figure 2 ;

[0019] Figure 3 is a schematic structural view of the stress eversion mechanism in the present utility model;

[0020] Figure 4 is a schematic structural view of the limit assist mechanism in the present utility model.

[0021] In the figure: 1, rectangular bed body; 2, buffer rubber pad; 3, stress eversion mechanism; 301, first chute; 302, bidirectional lead screw; 303, drive assembly; 304, sliding convex block; 305, lifting round rod; 306, knee rest platform; 307, rotating baffle; 308, silica gel cushion; 4, limit assist mechanism; 401, second chute; 402, double footrest; 403, limit groove; 404, return spring; 405, fixed headrest; 406, winding round shaft; 407, rubber sheet winding cylinder; 408, disposable rubber sheet. Detailed Description of the Embodiments

[0022] The following will clearly and completely describe the technical solutions in the embodiments of the present utility model with reference to the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model. Embodiment 1

[0023] In the prior art, when a doctor takes a stress position film of a patient's knee joint, it is usually necessary for medical staff to assist in applying an eversion stress to the knee joint, and then bind the patient's leg with a strap. Obviously, this not only increases the workload of medical staff and reduces the inspection efficiency, but also easily causes discomfort to the patient. To solve this technical defect existing in the prior art, such as Figure 1 、 Figure 2 and Figure 3As shown in the figure, this embodiment proposes an auxiliary device for taking knee valgus stress position films. When taking knee stress position films, it can automatically push and fix the patient's knees to both sides, thereby providing a certain valgus stress without manual operation by medical staff. A buffer rubber pad 2 is fixedly installed at the lower end of the rectangular bed body 1. A stress valgus mechanism 3 for pushing the patient's knee joint to move is provided on the rectangular bed body 1. Limiting and auxiliary mechanisms 4 for improving the patient's comfort are provided at both ends of the rectangular bed body 1. After the patient lies on the rectangular bed body 1, the stress valgus mechanism 3 will automatically push the patient's knee joints to both sides respectively and limit both sides of the knee joints at the same time, thereby continuously providing valgus stress.

[0024] In order to be able to automatically push and fix the patient's knees outward, this embodiment sets up a stress valgus mechanism 3. Specifically, the stress valgus mechanism 3 includes a first chute 301 opened on the rectangular bed body 1. A bidirectional lead screw 302 is movably installed inside the first chute 301. Sliding bumps 304 are symmetrically arranged on the bidirectional lead screw 302. A driving component 303 for driving the bidirectional lead screw 302 to rotate is provided in the middle of the first chute 301. A lifting round rod 305 is fixedly installed on the sliding bump 304. A knee placing platform 306 is fixedly installed at the upper end of the lifting round rod 305. A silica gel cushion 308 is detachably installed on the knee placing platform 306, which can effectively improve the comfort of the patient's legs. The said knee placing platform 306 can move upward under the action of the lifting round rod 305, so as to help the patient smoothly complete the knee bending action. Rotating baffles 307 are symmetrically installed on both sides of the knee placing platform 306. A transmission belt for driving the rotating baffles 307 is provided inside the knee placing platform 306. Initially, the rotating baffles 307 are in a horizontal state. After the patient places the knee joints on the knee placing platform 306, the two rotating baffles 307 will rotate under the action of the transmission belt, so as to limit and clamp both sides of the patient's knees.

[0025] In this embodiment, when the patient is taking a knee stress position film, he will lie on the rectangular bed body 1 and place his knees on the knee placing platform 306. At this time, the patient's feet will be inside the limiting groove 403.

[0026] Next, the rotating baffles 307 installed on the knee placing platform 306 will rotate upward simultaneously under the action of the transmission belt, so as to limit and clamp both sides of the patient's knees and prevent the knees from falling off the knee placing platform 306.

[0027] Subsequently, the bidirectional lead screw 302 will rotate under the action of the driving component 303. When rotating, it will make the two sliding bumps 304 move to both sides respectively, thereby separating the two knee joints of the patient. After reaching the preset position, the sliding bumps 304 will stop moving.

[0028] In this embodiment, by setting up a stress eversion mechanism 3 and utilizing the mutual cooperation between the sliding bump 304 and the knee-releasing platform 306, when taking stress-position X-rays of the knee joint, the patient's knees can be automatically pushed open to both sides and fixed, thereby providing a certain eversion stress. Without the need for manual operation by medical staff, it can not only reduce the workload of the staff, but also flexibly adjust the magnitude of the eversion stress, and can effectively prevent discomfort to the patient. Embodiment 2

[0029] In order to enable the device to adapt to patients of different heights and improve the comfort of the patients, as Figure 1 and Figure 4 shown, this embodiment sets up a limit assistance mechanism 4. Specifically, the limit assistance mechanism 4 includes a second chute 401 opened on the rectangular bed body 1. A double-foot pedal 402 is slidably connected to the second chute 401. A limit groove 403 is opened on the double-foot pedal 402. A return spring 404 is arranged inside the second chute 401. One end of the return spring 404 abuts against the inner wall of the second chute 401, and the other end of the return spring 404 contacts the double-foot pedal 402. After the patient leaves the rectangular bed body 1, the double-foot pedal 402 will automatically reset under the action of the return spring 404, so as to prepare for the use of the next patient. A fixed headrest 405 is arranged on the rectangular bed body 1. After the patient lies on the rectangular bed body 1, the feet will be respectively located inside the two limit grooves 403, and the head will be located above the fixed headrest 405. Installation cavities are symmetrically opened on both sides of the fixed headrest 405. A winding shaft 406 is movably installed inside one installation cavity, and a rubber sheet winding cylinder 407 is movably installed inside the other installation cavity. A disposable rubber sheet 408 is wound around the outside of the rubber sheet winding cylinder 407. One end of the disposable rubber sheet 408 is fixedly connected to the winding shaft 406. When the winding shaft 406 rotates, it will automatically wind up the disposable rubber sheet 408. The disposable rubber sheet 408 is located above the fixed headrest 405, thereby shielding and protecting the fixed headrest 405 and preventing the patient's head from contaminating the fixed headrest 405.

[0030] According to the above content, after the patient lies on the rectangular bed body 1, the feet will be placed inside the limit grooves 403. Next, the double-foot pedal 402 will move along the second chute 401 under the action of the patient's leg strength, so as to adapt to patients of different heights.

[0031] Moreover, the disposable rubber sheet 408 will shield and protect the fixed headrest 405. After one patient's examination is completed, the winding shaft 406 will automatically wind up the disposable rubber sheet 408, so that the new disposable rubber sheet 408 is located above the fixed headrest 405, without the need for manual replacement by medical staff.

[0032] In this embodiment, by setting the limit assisting mechanism 4 and utilizing the mutual cooperation between the second sliding groove 401 and the double pedal 402, the distance between the double pedal 402 and the knee placing platform 306 can be freely changed, which can be applicable to patients of different heights, is convenient to use. Moreover, by automatically winding the disposable rubber sheet 408 through the winding shaft 406, it can not only prevent the fixed headrest 405 from being contaminated by the patient's hair, but also eliminate the need for medical staff to manually replace the rubber sheet.

[0033] The control mode of the present utility model is automatically controlled by a controller. The control circuit of the controller can be realized by simple programming of those skilled in the art. The provision of power also belongs to the common knowledge in the art. And the present utility model mainly aims to protect mechanical devices, so the control mode and circuit connection of the present utility model will not be explained in detail.

[0034] It should be noted that, in this article, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or sequence between these entities or operations. Moreover, the term "comprising", "including" or any other variant thereof is intended to cover non-exclusive inclusion, so that a process, method, article or device comprising a series of elements not only includes those elements, but also includes other elements not expressly listed, or further includes elements inherent to such process, method, article or device.

[0035] Although the embodiments of the present utility model have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principle and spirit of the present utility model. The scope of the present utility model is defined by the appended claims and their equivalents.

Claims

1. An auxiliary device for taking valgus stress position of the knee joint, comprising a rectangular bed body (1), and a buffer rubber pad (2) is fixedly installed at the lower end of the rectangular bed body (1), and is characterized in that: A stress valgus mechanism (3) for pushing the patient's knee joint to move is provided on the rectangular bed body (1), and limit auxiliary mechanisms (4) for improving the patient's comfort are provided at both ends of the rectangular bed body (1); The stress valgus mechanism (3) includes a first chute (301) opened on the rectangular bed body (1). A bidirectional lead screw (302) is movably installed inside the first chute (301). Sliding bumps (304) are symmetrically arranged on the bidirectional lead screw (302). A driving assembly (303) for driving the bidirectional lead screw (302) to rotate is provided in the middle of the first chute (301). A lifting round rod (305) is fixedly installed on the sliding bump (304). A knee placing platform (306) is fixedly installed at the upper end of the lifting round rod (305). Rotating baffles (307) are symmetrically installed on both sides of the knee placing platform (306).

2. The knee valgus stress position shooting auxiliary device according to claim 1, characterized in that: A silica gel cushion (308) is detachably installed on the knee placing platform (306).

3. The knee valgus stress position shooting auxiliary device according to claim 1, characterized in that: The knee placing platform (306) can move upward under the action of the lifting round rod (305).

4. The knee varus stress position shooting auxiliary device according to claim 1, characterized in that: A transmission belt for driving the rotating baffle (307) is provided inside the knee placing platform (306).

5. The knee valgus stress position shooting auxiliary device according to claim 1, characterized in that: The limit auxiliary mechanism (4) includes a second chute (401) opened on the rectangular bed body (1). A double foot pedal (402) is slidably connected to the second chute (401). A limit groove (403) is opened on the double foot pedal (402). A return spring (404) is arranged inside the second chute (401). A fixed headrest (405) is arranged on the rectangular bed body (1).

6. The knee valgus stress position shooting auxiliary device according to claim 5, characterized in that: Installation cavities are symmetrically opened on both sides of the fixed headrest (405). A winding round shaft (406) is movably installed inside one side installation cavity. A rubber sheet winding cylinder (407) is movably installed inside the other side installation cavity. A disposable rubber sheet (408) is wound around the outside of the rubber sheet winding cylinder (407).

7. An auxiliary device for taking knee valgus stress position photographs according to claim 5, characterized in that: One end of the return spring (404) abuts against the inner wall of the second chute (401), and the other end of the return spring (404) contacts the double foot pedal (402).

8. An auxiliary device for taking knee valgus stress position radiographs according to claim 6, characterized in that: The disposable rubber sheet (408) is located above the fixed headrest (405).

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