CN209770789U - A convertible body position fixation device for knee joint surgery - Google Patents

Abstract

A changeable body position fixation device for knee joint surgery, comprising a support platform, at least one transverse guide rail arranged along the Y-axis direction, at least one longitudinal guide rail arranged along the X-axis direction, and a first slider installed on the longitudinal guide rail, The first slider is provided with a first fastener for locking the first slider on the longitudinal guide rail, the transverse guide rail is fixed on the supporting platform, and the longitudinal guide rail is fixedly connected to the second slider, The longitudinal guide rail is installed on the transverse guide rail through the second slider, and the second slider is provided with a second fastener for locking the second slider on the transverse guide rail. A horizontal pendulum seat is hinged to the first hinge shaft arranged along the X-axis direction, and a vertical pendulum block is hinged to the horizontal pendulum seat through the second hinge shaft arranged along the Y-axis direction. It can adjust the body position of the knee joint in a bacteria-free manner, and is simple to operate and easy to install, and can be widely applied in clinical practice.

Description

A convertible body position fixation device for knee joint surgery

technical field

The invention relates to a body position fixation device for knee joint surgery.

Background technique

In actual clinical work, the implementation of knee joint surgery requires the knee joint to be constantly changed between the extended position and the flexed position, as well as between internal rotation, non-rotation and external rotation. required posture. Maintaining the position for a long time will greatly consume the physical strength of the assistant and make the fixation unstable, which will affect the accuracy of the operation, the safety and reliability of the operation. Moreover, the existing fixation device is relatively heavy, complicated to install, and cumbersome to operate, which is not conducive to the operator's intraoperative adjustment and fixation, so it has not been widely used in clinical practice.

Contents of the invention

The invention solves the disadvantages of the prior art and provides a knee joint surgery convertible body position fixation device with large adjustment range, multiple adjustment orientations, convenient and stable locking after adjustment.

In order to achieve the above object, the present invention adopts the following technical solutions:

A knee joint surgery convertible body position fixation device, comprising a support platform, at least one transverse guide rail arranged along the Y-axis direction, at least one longitudinal guide rail arranged along the X-axis direction, and a first slider installed on the longitudinal guide rail, The first slider is provided with a first fastener for locking the first slider on the longitudinal guide rail,

The transverse guide rail is fixed on the support platform, the longitudinal guide rail is fixedly connected with the second slider, the longitudinal guide rail is installed on the transverse guide rail through the second slider, and the second slider is provided with a second The slider is locked on the second fastener on the transverse guide rail. The first slider is hinged with a transverse swing seat through the first hinge arranged along the X-axis direction. The transverse swing seat is hinged along the Y-axis direction. The second hinge shaft arranged is hinged with a longitudinal pendulum block, on which a foot support plate for fixing the patient’s feet is fixed, and on the first slider there is a device for locking the horizontal pendulum seat on the first slide. The third fastening piece on the block, and the fourth fastening piece for locking the vertical pendulum block on the horizontal swing seat is provided on the horizontal swing seat. Through the sliding of the second slider on the horizontal guide rail and the sliding of the first slider on the longitudinal guide rail, it is ensured that the foot support can be greatly adjusted along the X-axis and Y-axis on the support platform. The block can realize the rotation offset of the foot support along the X-axis and the Y-axis, so that the adjustment can realize the straightening, flexion, internal rotation, non-rotation or external rotation of the knee joint of the foot support, and then fix it with various fasteners Its position realizes the purpose of fixing the knee joint body position.

Further, the support platform is also provided with a fixing device for supporting the support platform on the operating bed. In this way, the purpose of fixing the whole supporting platform on the operating bed is realized by the fixing device.

Further, the fixing device includes a fixed connecting rod fixed on the support platform by a connecting rod fastening screw and a fixing fixture slidably connected to the fixing connecting rod, the fixing fixture includes an upper clamping block and a lower clamping block, the The upper clamping block and the lower clamping block are provided with locking fastening screws for locking the upper clamping block and the lower clamping block on the fixed link.

Further, the upper clamping block or/and the lower clamping block are provided with a fixed locking member for locking the upper clamping block or/and the lower clamping block on the operating bed.

Further, the fixed locking member is a fixed locking screw, the upper clamping block and the lower clamping block are correspondingly provided with screw holes, and the fixing locking screw is installed in the screw holes.

Further, there are two transverse guide rails and two longitudinal guide rails.

Further, the first fastener and the second fastener are locking screws. The first slider and the second slider are provided with screw holes that match the locking screw, and the locking screw is installed in the screw hole. By rotating the locking screw, the locking screw is in contact with the support platform or other The fixing part is in contact, and the first slider and the second slider are locked by pressure and friction.

Further, the third fastener includes a first tapered friction wheel fixed on the first hinge shaft, a second tapered friction wheel matched with the first tapered friction wheel, and a second tapered friction wheel that drives the The friction wheel rotates and is screwed on the first screw on the first slider. By rotating the first screw, the tapered friction surface of the second tapered friction wheel is in close contact with the tapered friction surface of the first tapered friction wheel. , thereby locking the rotation angle of the first hinge axis.

Further, the fourth fastener includes a second screw coaxially fixed at one end of the second hinge shaft and has a diameter larger than the second hinge shaft. Groove, the thickness of the longitudinal pendulum block matches the groove, one side of the groove is provided with a shaft hole matching the size of the second hinge shaft, and the other side is correspondingly provided with a shaft hole matching the size of the second screw rod. screw hole, the second screw rod is installed in the screw hole so that the second hinge shaft is placed in the shaft hole, and the longitudinal pendulum block is installed in the groove through the second hinge shaft, due to the diameter of the second screw rod It is larger than the second hinge axis, so that a locking step is formed between the second screw rod and the second hinge shaft. By rotating the second screw rod, the locking step contacts the end of the longitudinal pendulum block, and the longitudinal pendulum block is locked by the locking step. The pressure and friction of the vertical pendulum lock the position after rotation.

In summary, the present invention enables the operator to aseptically adjust the position of the knee joint during the operation, and is easy to operate and easy to install, and can be widely applied in clinical practice.

Description of drawings

Fig. 1 is a perspective view of the present invention.

Fig. 2 is a schematic structural view of the first conical friction wheel and the second conical friction wheel of the present invention.

In the accompanying drawings, 1. supporting platform; 2. longitudinal guide rail; 3. first slider; 4. horizontal swing seat; 5. vertical swing block; 6. foot support plate; 7. fourth fastener; Three fasteners; 9, the first fastener; 10, the transverse guide rail; 11, the second fastener; 12, the fixed connecting rod; 13, the fixed fixture; 14, the lock fastening screw; 15, the fixed lock Screw rod; 16, connecting rod fastening screw.

Detailed ways

In order to better understand the present invention, the invention will be described in further detail below in conjunction with the accompanying drawings and implementation examples, but the embodiments of the present invention are not limited thereto, and the scope of protection of the present invention also relates to those skilled in the art who can achieve according to the concept of the present invention. Think of the equivalent technical means.

As shown in Figure 1, a knee joint surgery convertible body position fixation device includes a support platform 1, two transverse guide rails 10 arranged along the Y-axis direction, two longitudinal guide rails 2 arranged along the X-axis direction, and a support platform installed on the longitudinal guide rails. 2 on the first slider 3, the first slider 3 is provided with a first fastener 9 for locking the first slider 3 on the longitudinal guide rail 2,

The transverse guide rail 10 is fixed on the support platform 1, the longitudinal guide rail 2 is fixedly connected with the second slider, the longitudinal guide rail 2 is installed on the transverse guide rail 10 through the second slider, and the second slider is provided with There is a second fastener 11 for locking the second slider on the transverse guide rail 10, the first slider 3 is hinged with a transverse swing seat 4 through a first hinge arranged along the X-axis direction, the The horizontal pendulum seat 4 is hinged with a longitudinal pendulum block 5 through a second hinge shaft arranged along the Y-axis direction. A foot support plate 6 for fixing the patient's feet is fixed on the longitudinal pendulum block 5. The first slide block 3 There is a third fastener 8 for locking the horizontal swing seat 4 on the first slider 3, and the horizontal swing seat 4 is provided with a third fastener 8 for locking the vertical swing block 5 on the horizontal swing seat 4. Four fasteners7.

In this embodiment, the support platform 1 is also provided with a fixing device for supporting the support platform 1 on the operating bed, and the fixing device includes a fixed link 12 fixed on the support platform 1 by a connecting rod fastening screw 16 And the fixing fixture 13 that is slidably connected on the fixing link 12, the fixing fixture 13 includes an upper clamping block and a lower clamping block, and the upper clamping block and the lower clamping block are provided with lock fastening screws 14 for the upper The clamping block and the lower clamping block are locked on the fixed link 12, and the upper clamping block or/and the lower clamping block are provided with a fixed locking member for locking the upper clamping block or/and the lower clamping block on the operating bed , the fixed locking member is a fixed locking screw 15, the upper clamping block and the lower clamping block are correspondingly provided with screw holes, and the fixed locking screw 15 is installed in the screw holes. In this way, the purpose of fixing the entire support platform 1 on the operating bed is achieved by the fixing device.

In this embodiment, the first fastener 9 and the second fastener 11 are locking screws. The first slider 3 and the second slider are provided with screw holes matching the locking screw, and the locking screw is installed in the screw hole. By rotating the locking screw, the locking screw is connected to the support platform 1 or other fixing parts, the first slider 3 and the second slider are locked by pressure and friction.

As shown in FIG. 2 , the third fastener 8 includes a first tapered friction wheel 81 fixed on the first hinge shaft, a second tapered friction wheel matched with the first tapered friction wheel 81 82 and the first screw rod that drives the second conical friction wheel 82 to rotate and is screwed on the first slide block 3 .

The fourth fastener 7 includes a second screw coaxially fixed at one end of the second hinge shaft and has a diameter larger than the second hinge shaft. The horizontal swing seat 4 is provided with a groove along the X-axis with its opening upward. , the longitudinal pendulum block 5 matches the thickness of the groove, one side of the groove is provided with a shaft hole matching the size of the second hinge shaft, and the other side is correspondingly provided with a shaft hole matching the size of the second screw rod. The second screw rod is installed in the screw hole so that the second hinge shaft is placed in the shaft hole, and the longitudinal pendulum block 5 is installed in the groove through the second hinge shaft.

During surgery, the patient's foot assembly and support platform are kept sterile by routine sterilization of surgical instruments.

Place the support platform 1 flat on the position of the leg board of the operating bed and on the laid surgical drape. Unscrew the fixed locking piece, let the fixed fixture 13 separate, use the tiger’s mouth part of the fixed fixture 13 to match the side chute rail, and lock and fix it with the fixed locking piece; then install the fixed connecting rod 12 into the fixed fixture 13 The draw-in slot of the lock piece fastening screw 14 is tightened and fixed, and the whole device is fixed on the operating bed.

Unscrew the fourth fastener 7 in the support platform 1, put it into the corresponding vertical pendulum block 5 of the foot assembly, and tighten it. The sterilized affected limb calf and foot are placed on the foot support plate 6 and fixed with sterile bandages and the like.

The first slider 3 can move along the direction of the longitudinal guide rail 2 when the first fastening member 9 is loosened, and the first fastening member 9 is locked to be fixed. The patient's knee joint can move with the position of the first slider 3 during the operation, and the knee joint can be flexed and extended and fixed in the flexed and extended position.

When the second fastener 11 is loosened, the second slider and all components on the longitudinal guide rail 2 can slide horizontally along the transverse guide rail 10 as a whole. The abduction and adduction of the lower limbs and the fixation of the corresponding body positions can be realized.

In use, the fourth fastener 7 can be loosened to adjust the longitudinal rotation of the foot assembly, otherwise it can be locked and fixed. You can adjust the position and state of the ankle joint. The twisting of the third fastener 8 will drive the horizontal swing seat 4, the vertical swing block 5, the foot support plate 6 and the fourth fastener 7 to make lateral deflection through the internal structure. The knee joint can be varus-varus and fixed in the corresponding body position.

In addition, it should be noted that this patent is not limited to the above-mentioned embodiments, as long as the specific size or shape of the parts is not specified, the parts can be of any size or shape that is suitable for its structure, regardless of its material composition. Any change, any adoption of the structural design provided by the present invention is a deformation of the present invention and should be considered within the protection scope of the present invention.

Claims (9)

1. A convertible body position fixation device for knee joint surgery, characterized in that it comprises a support platform (1), at least one transverse guide rail (10) arranged along the Y-axis direction, and at least one longitudinal guide rail arranged along the X-axis direction (2) and the first slide block (3) installed on the longitudinal guide rail (2), the first slide block (3) is provided with the first slide block (3) for locking on the longitudinal guide rail (2) The first fastener(9) on the The transverse guide rail (10) is fixed on the supporting platform (1), the longitudinal guide rail (2) is fixedly connected with the second slider, and the longitudinal guide rail (2) is installed on the transverse guide rail (10) through the second slider , the second slider is provided with a second fastener (11) for locking the second slider on the transverse guide rail (10), and the first slider (3) passes through the first hinge A horizontal swing seat (4) is hinged to the shaft, and the first hinge shaft is arranged along the X-axis direction. A vertical swing block (5) is hinged on the horizontal swing seat (4) through a second hinge shaft, and the second hinge shaft The axis is arranged along the Y-axis direction, the foot support plate (6) for fixing the patient's foot is fixed on the described longitudinal pendulum block (5), and the first slide block (3) is provided with a horizontal pendulum seat (4) ) is locked on the third fastener (8) on the first slider (3), and the horizontal swing seat (4) is provided with locking the vertical swing block (5) on the horizontal swing seat (4) the fourth fastener (7). 2 . The fixation device for knee joint surgery with changeable body position according to claim 1 , characterized in that: the support platform ( 1 ) is also provided with a fixation device for supporting the support platform ( 1 ) on the operating bed. 3 . 3. The fixation device for changing body position in knee joint surgery according to claim 2, characterized in that: the fixation device comprises a fixed link (12) fixed on the support platform (1) by a link fastening screw (16). ) and the fixing fixture (13) that is slidingly connected on the fixing link (12), the fixing fixture (13) includes an upper clamping block and a lower clamping block, and the upper clamping block and the lower clamping block are provided with a lock Set screws (14) are used to lock the upper clamping block and the lower clamping block on the fixed connecting rod (12). 4. The knee joint operation changeable body position fixation device according to claim 3, characterized in that: said upper clamping block or/and lower clamping block are provided with a device for locking the upper clamping block or/and lower clamping block on Fixed locking element on the operating table. 5. The fixation device for changing body position in knee joint surgery according to claim 4, characterized in that: the fixed locking member includes a fixed locking screw (15), and the upper clamping block and the lower clamping block are correspondingly provided with Screw hole, the fixed locking screw (15) is installed in the screw hole. 6. The fixation device for changing body position during knee joint surgery according to claim 1, characterized in that there are two transverse guide rails (10) and two longitudinal guide rails (2). 7. The fixation device for changing body position during knee joint surgery according to claim 1, characterized in that: both the first fastener (9) and the second fastener (11) use locking screws. 8. The knee joint operation changeable body position fixation device according to claim 1, characterized in that: the third fastener (8) comprises a first conical friction wheel fixed on the first hinge shaft, and the The second conical friction wheel matched with the first conical friction wheel and the first screw rod that drives the second conical friction wheel to rotate and is screwed on the first slider (3). 9. The device for changing body position for knee joint surgery according to claim 1, characterized in that: the fourth fastener (7) includes a screw coaxially fixed at one end of the second hinge shaft and having a diameter larger than that of the second hinge shaft. For the second screw, the horizontal swing seat (4) is provided with a groove that opens upward along the X-axis, and the longitudinal swing block (5) matches the thickness of the groove, and one side of the groove A shaft hole matching the size of the second hinge shaft is provided on the upper side, and a screw hole matching the size of the second screw rod is correspondingly provided on the other side, and the second screw rod is installed in the screw hole so that the second hinge shaft is placed In the shaft hole, the longitudinal pendulum block (5) is installed in the groove through the second hinge shaft.