Knee joint operation fixing device

Through the design of slip unit and hinge parts, combined with the use of airbags and heater sheets, the adaptability and comfort of knee surgical fixation devices to patients of different body types is solved, and a flexible fixation and comfortable surgical environment is achieved.

CN119257761AInactive Publication Date: 2025-01-07ZHANGZHOU HOSPITAL OF TRADITIONAL CHINESE MEDICINE FUJIAN PROVINCE
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Patent Information

Application Number
CN202411703242.7
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2024-11-26
Publication Date
2025-01-07
Estimated Expiration
Not applicable · inactive patent

AI Technical Summary

Technical Problem

The existing knee surgery fixtures cannot be effectively adjusted to adapt to the leg angles of patients with different body types, and the insecure fixation results in a decrease in patient comfort and increase the workload of the surgeon.

Method used

A knee surgical fixing device including a sliding unit, a thigh support unit and a calf support unit is designed. Through the combination of hinges and slide rails, flexible fixation of the knee joint is achieved and on the main thigh bracket. Install airbags and heaters on to suit different body fat rates and improve comfort.

Benefits of technology

It realizes flexible fixation of legs of different patients, improves comfort and operation convenience during surgery, simplifies the device structure, and is suitable for sterile operating room environments.

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Abstract

The invention discloses a knee joint operation fixing device, and relates to the technical field of medical instruments, the knee joint operation fixing device comprises a sliding unit, a thigh bearing unit and a shank bearing unit, one end of the thigh bearing unit is hinged to one end of the shank bearing unit through a hinge piece; the other ends of the thigh bearing unit and the shank bearing unit are movably connected with the upper surface of the sliding unit; the section of the thigh bearing unit and the section of the shank bearing unit are both in a U shape. According to the knee joint operation fixing device, the air bag is installed in the thigh main supporting plate, legs of patients with different body fat rates can be fixed, through relative movement of the sliding block and the sliding rail and cooperation of the sliding block and the sliding rail and the rotating base, the leg bending and overturning scenes of the different patients can be met, and the knee joint operation fixing device is convenient to use and high in practicability. Meanwhile, the silica gel heating piece installed on the air bag can improve the comfort level of the patient in the operation, the structure is simple, sanitation dead angles are few, and the sterile environment requirement of an operating room can be met conveniently.
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Description

Technical Field

[0001] The present invention relates to the technical field of medical devices, and in particular to a knee joint surgery fixation device. Background Art

[0002] Knee surgery often requires keeping the patient's knee in a fixed position for a long time throughout the operation until the end of the operation.

[0003] Existing knee surgery fixation devices have certain drawbacks when used: on the one hand, for the knee joint and the leg lifting parts, it is not possible to better play a fixing role while being easy to adjust, and it cannot change with the leg angles of patients of different body shapes; on the other hand, most of the existing devices directly use straps to tie the legs to the device, and there is still a certain gap between the patient's legs and the device, which is inconvenient to fix the patient's legs, and it is easy to cause the patient's legs to separate from the device, thereby increasing the workload of the surgeon, and when the strapping is too tight, it is easy to affect the patient's comfort.

[0004] How to develop a knee joint surgical fixation device that can not only fix the legs of different patients, but also meet the leg bending and flipping scenarios of different patients, and improve the patient's comfort during the operation has become a technical problem that needs to be urgently solved by technical personnel in this field. Summary of the invention

[0005] The purpose of the present invention is to provide a knee joint surgery fixation device to solve the problems listed in the background technology.

[0006] In order to solve the above technical problems, the present invention adopts the following technical solutions:

[0007] The present invention discloses a knee joint surgery fixation device, comprising a sliding unit, a thigh supporting unit and a calf supporting unit, wherein one end of the thigh supporting unit is hingedly connected to one end of the calf supporting unit through a hinge;

[0008] The other ends of the thigh supporting unit and the calf supporting unit are connected to the upper surface of the sliding unit;

[0009] Furthermore, the cross-sections of the thigh supporting unit and the calf supporting unit are both U-shaped.

[0010] Preferably, the sliding unit comprises a slider and a slide rail, and the slider is movably connected to the slide rail.

[0011] Preferably, a permanent magnet is installed on the slide rail, and a coil is installed inside the slider.

[0012] Preferably, the thigh supporting unit comprises a thigh main support plate and a thigh auxiliary support plate, a first cavity is formed on the side wall of the thigh main support plate, and one end of the thigh auxiliary support plate is slidably mounted inside the first cavity;

[0013] An air bag is installed on the U-shaped inner wall of the thigh main support plate, and an electric heater is installed on the outer surface of the air bag, and the electric heater is made of silica gel;

[0014] One end of the lower surface of the thigh main support plate away from the thigh auxiliary support plate is fixedly connected to one end of the slide rail through a first hinge seat.

[0015] Preferably, the calf supporting unit comprises a calf auxiliary support plate and a calf main support plate, one end of the calf main support plate is provided with a second cavity, and one end of the calf auxiliary support plate is slidably mounted in the second cavity;

[0016] One end of the lower surface of the calf main support plate away from the calf auxiliary support plate is fixedly connected to the sliding block through a second hinge seat.

[0017] Preferably, a hinge is installed between the opposite surfaces of the calf auxiliary support plate and the thigh auxiliary support plate.

[0018] Preferably, an abutment plate is installed in the U-shaped cavity of the calf main support plate.

[0019] Preferably, it further comprises a rotating seat, the upper surface of which is fixedly connected to both ends of the lower surface of the slide rail, the lower surface of which is fixedly connected to the operating table, and an electromagnet is installed in the rotating seat.

[0020] Preferably, the inner bottom surfaces of the thigh main support plate and the calf main support plate are on the same horizontal plane as the operating table.

[0021] Compared with the prior art, the beneficial technical effects of the present invention are:

[0022] The present invention provides a knee joint surgical fixation device. Firstly, the thigh support unit and the calf support unit can be extended and retracted to meet the leg length requirements of different patients, so that the thigh and calf of the patient can be fully supported and the knee joint of the patient can be exposed; secondly, the movement of the slider on the slide rail drives the relative movement of the calf support unit and the thigh support unit to form an angle, so as to complete the support operation of the patient's knee joint; then, through the rotation operation of the rotating seat, the patient's knee joint is turned toward and away from the medical staff, so that the medical staff can observe and perform surgical operations on both sides of the knee joint; finally, the thigh main support plate fixes the patient's thigh through the airbag to adapt to patients with different body fat rates, and a silicone heating plate is installed on the airbag to heat the patient's thigh root, thereby improving the patient's comfort during the operation; further, the device has a simple structure, high movement accuracy, and few sanitary dead corners, and can be used in a sterile operating room environment. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] The present invention will be further described below in conjunction with the accompanying drawings.

[0024] Figure 1 This is a schematic front view of a fixation device for knee joint surgery of the present invention (non-working state);

[0025] Figure 2 It is a side view schematic diagram of a fixation device for knee joint surgery of the present invention (non-working state);

[0026] Figure 3 This is a three-dimensional schematic diagram of a fixation device for knee joint surgery of the present invention (non-working state);

[0027] Figure 4 This is a front view schematic diagram of a fixation device for knee joint surgery of the present invention (working state);

[0028] Figure 5 It is a side view schematic diagram of a fixation device for knee joint surgery of the present invention (working state);

[0029] Figure 6 This is a three-dimensional schematic diagram of a fixation device for knee joint surgery of the present invention (working state);

[0030] Figure 7 It is a rotating side view schematic diagram of a fixation device for knee joint surgery of the present invention (working state);

[0031] Figure 8 This is a rotating stereoscopic schematic diagram of a fixation device for knee joint surgery of the present invention (working state).

[0032] Explanation of the reference numerals: 1. rotating seat; 2. first articulated seat; 3. main thigh support plate; 4. auxiliary thigh support plate; 5. hinge; 6. auxiliary calf support plate; 7. main calf support plate; 8. second articulated seat; 9. slider; 10. slide rail. DETAILED DESCRIPTION

[0033] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0034] like Figure 1-8 As shown, a knee joint surgery fixation device comprises a sliding unit, a thigh supporting unit and a calf supporting unit, wherein one end of the thigh supporting unit is hinged to one end of the calf supporting unit through a hinge;

[0035] The other ends of the thigh supporting unit and the calf supporting unit are connected to the upper surface of the sliding unit;

[0036] The cross-sections of the thigh supporting unit and the calf supporting unit are both U-shaped;

[0037] When working, the thigh supporting unit supports the patient's thigh, and the calf supporting unit supports the patient's calf. Furthermore, driven by the sliding unit, the thigh supporting unit and the calf supporting unit swing relative to each other to form a triangle, exposing the patient's knee joint to the medical staff, which is convenient for surgical operations.

[0038] Specifically, the sliding unit includes a slider 9 and a slide rail 10, the slider 9 is movably connected to the slide rail 10, a permanent magnet is installed on the slide rail 10, a coil is installed inside the slider 9, and the slider and the slide rail form a linear motor, which has a simple structure, is easy to maintain, has high precision, and can be moved between the slider and the slide rail according to the needs of medical staff. The wear between the slider and the slide rail is small, which meets the environmental requirements of the operating room during surgery.

[0039] Specifically, the thigh support unit comprises a thigh main support plate 3 and a thigh auxiliary support plate 4. A first cavity is formed on the side wall of the thigh main support plate 3. One end of the thigh auxiliary support plate 4 is slidably mounted inside the first cavity. The thigh auxiliary support plate can be retracted into the cavity inside the thigh main support plate. The thigh main support plate and the thigh auxiliary support plate can slide relative to each other to adapt to the thigh lengths of different patients and achieve effective support for the thigh of the patient.

[0040] An airbag is installed on the U-shaped inner wall of the thigh main support plate 3, and an electric heater is installed on the outer surface of the airbag. The electric heater is made of silicone. When the patient's leg enters the inside of the thigh main support plate, the airbag on the inner wall of the thigh main support plate is inflated to fix the outer and inner sides of the thigh respectively, so as to prevent the patient's thigh from shaking during the operation in the thigh support unit, which may affect the operation results.

[0041] During knee surgery, the patient's legs will be exposed to a constant temperature and humidity operating room for a long time, and the patient's thighs and calves will be bent during the operation, and the thighs and calves cannot be well covered with sheets. Furthermore, under the inhibition of anesthetics, it is easy to cause the patient's body temperature regulation ability to decline. By adding a silicone electric heating sheet to the outer surface of the airbag, the thigh area rich in nerves and blood vessels can be heated, effectively ensuring the patient's comfort during the operation, and at the same time ensuring the blood circulation of the patient's thigh root;

[0042] The lower surface of the thigh main support plate 3, at one end away from the thigh auxiliary support plate 4, is fixedly connected to one end of the slide rail 10 via the first hinge seat 2, so that the thigh main support plate can swing relative to the slide rail via the first hinge seat, and further, the rotation and lifting operation of the patient's thigh can be realized.

[0043] Specifically, the calf supporting unit includes a calf auxiliary support plate 6 and a calf main support plate 7. A second cavity is opened at one end of the calf main support plate 7. One end of the calf auxiliary support plate 6 is slidably installed in the second cavity. The calf main support plate and the calf auxiliary support plate can slide relative to each other to adapt to the calf lengths of different patients.

[0044] The lower surface of the main calf support plate 7 is fixedly connected to the slider 9 at one end away from the auxiliary calf support plate 6 via a second hinge seat 8, and the main calf support plate can swing relative to the slider to complete the lifting and lowering operation of the patient's calf.

[0045] Specifically, a hinge 5 is installed between the opposite surfaces of the calf auxiliary support plate 6 and the thigh auxiliary support plate 4;

[0046] During operation, when the slider moves on the slide rail, the slider can drive the thigh sub-support plate and the calf sub-support plate to move relative to each other, so that the angle formed between the thigh sub-support plate and the calf sub-support plate changes. When the angle becomes smaller, the lifting height of the patient's knee joint increases, and when the angle becomes larger, the lifting height of the patient's knee joint decreases.

[0047] Specifically, an abutment plate 11 is installed in the U-shaped cavity of the calf main support plate 7, so as to support the sole of the patient's foot and prevent the angle formed by the thigh support plate and the calf support plate from compressing the patient's popliteal fossa, which is beneficial to the blood circulation of the patient's leg and can further limit the position of the patient's calf;

[0048] Furthermore, the size of the calf supporting unit is smaller than that of the thigh supporting unit, thereby ensuring effective fixation of the patient's legs.

[0049] Specifically, it also includes a rotating seat 1, the upper surface of the rotating seat 1 is fixedly connected to the two ends of the lower surface of the slide rail 10, and the lower surface of the rotating seat 1 is fixedly connected to the operating table. An electromagnet is installed in the rotating seat 1. Medical staff can control the patient's knee joint to move relative to the long side of the operating table through the rotating seat, which is convenient for medical staff to perform surgical operations, and by controlling the power on and off of the electromagnet, the swing angle of the patient's knee joint to the side of the operating table is controlled.

[0050] Specifically, the inner bottom surfaces of the thigh main support plate 3 and the calf main support plate 7 are on the same horizontal plane as the operating table, and the thigh main support plate and the calf main support plate are in a sterile area to prevent cross infection of patients during surgery.

[0051] In addition, it also includes fastening bolts, which are respectively installed on the thigh main support plate and the calf main support plate, and respectively abut against the outer side walls of the thigh auxiliary support plate and the calf auxiliary support plate to achieve relative fixation between the thigh main support plate and the thigh auxiliary support plate and between the calf main support plate and the calf auxiliary support plate.

[0052] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0053] The embodiments described above are only descriptions of the preferred modes of the present invention, and are not intended to limit the scope of the present invention. Without departing from the design spirit of the present invention, various modifications and improvements made to the technical solutions of the present invention by ordinary technicians in this field should all fall within the protection scope determined by the claims of the present invention.

Claims

1. A knee joint surgery fixation device, characterized in that: It comprises a sliding unit, a thigh supporting unit and a calf supporting unit, wherein one end of the thigh supporting unit is hinged to one end of the calf supporting unit through a hinge; The other ends of the thigh supporting unit and the calf supporting unit are connected to the upper surface of the sliding unit; Furthermore, the cross-sections of the thigh supporting unit and the calf supporting unit are both U-shaped.

2. A knee joint surgery fixation device according to claim 1, characterized in that: The sliding unit comprises a sliding block (9) and a sliding rail (10), and the sliding block (9) is movably connected to the sliding rail (10).

3. A knee joint surgery fixation device according to claim 2, characterized in that: A permanent magnet is installed on the slide rail (10), and a coil is installed inside the slider (9).

4. A knee joint surgery fixation device according to claim 3, characterized in that: The thigh supporting unit comprises a thigh main support plate (3) and a thigh auxiliary support plate (4), a first cavity is provided on the side wall of the thigh main support plate (3), and one end of the thigh auxiliary support plate (4) is slidably mounted inside the first cavity; An air bag is installed on the U-shaped inner wall of the thigh main support plate (3), and an electric heating plate is installed on the outer surface of the air bag, and the electric heating plate is made of silica gel; The end of the lower surface of the thigh main support plate (3) away from the thigh auxiliary support plate (4) is fixedly connected to one end of the slide rail (10) through a first hinge seat (2).

5. A knee joint surgery fixation device according to claim 4, characterized in that: The calf supporting unit comprises a calf auxiliary support plate (6) and a calf main support plate (7), one end of the calf main support plate (7) is provided with a second cavity, and one end of the calf auxiliary support plate (6) is slidably mounted in the second cavity; One end of the lower surface of the calf main support plate (7) away from the calf auxiliary support plate (6) is fixedly connected to the slider (9) via a second hinge seat (8).

6. A knee joint surgery fixation device according to claim 5, characterized in that: A hinge (5) is installed between the opposite surfaces of the calf auxiliary support plate (6) and the thigh auxiliary support plate (4).

7. A knee joint surgery fixation device according to claim 6, characterized in that: An abutment plate (11) is installed in the U-shaped cavity of the calf main support plate (7).

8. A knee joint surgery fixation device according to claim 7, characterized in that: It also comprises a rotating seat (1), the upper surface of the rotating seat (1) being fixedly connected to the two ends of the lower surface of the slide rail (10), the lower surface of the rotating seat (1) being fixedly connected to the operating table, and an electromagnet being installed in the rotating seat (1).

9. A knee joint surgery fixation device according to claim 8, characterized in that: The inner bottom surfaces of the thigh main support plate (3) and the calf main support plate (7) are on the same horizontal plane as the operating table.