Auxiliary supporting frame for knee joint cavity paracentesis

Abstract

The utility model relates to an auxiliary supporting frame for knee joint cavity paracentesis. The auxiliary supporting frame comprises a support, a lifting plate, a connecting plate, a fixing plate and a lifting device. The support is provided with two side beams which extend in the front-back direction and are opposite in the left-right direction. The left side edge and the right side edge of the fixing plate are correspondingly installed on the rear portions of the two side beams respectively. The front side edge of the fixing plate is hinged to the rear side edge of the connecting plate, the front side edge of the connecting plate is hinged to the rear side edge of the lifting plate, the support is further provided with two first connecting rods, the lower ends of the two first connecting rods are hinged to the middles of the two side beams respectively, and the upper ends of the two first connecting rods are hinged to the left side edge and the right side edge of the lifting plate respectively. The lifting device is arranged on the support, and the connecting plate is installed at the power output end of the lifting device. According to the auxiliary supporting frame for the knee joint cavity paracentesis, the knee joint of a patient can be bent and unfolded to different degrees according to different knee joint cavity paracentesis requirements, and the puncture efficiency and the treatment effect are improved.

Description

Technical Field

[0001] The utility model relates to the technical field of medical devices, in particular to an auxiliary support frame used for knee joint cavity puncture. Background Art

[0002] Arthrocentesis is a commonly used procedure in the clinical treatment of knee joint problems. It is often used to examine the nature of fluid effusion within the joint cavity or to inject medication into the joint cavity after fluid aspiration. Arthrocentesis typically requires the patient to lie supine on the operating table with both legs extended. Arthrocentesis is then performed, typically from the outside of the patella, from the quadriceps tendon downward to the inside of the joint capsule, or from the below of the patella, from the patellar ligament downward to the inside of the joint capsule.

[0003] Normally, before performing a knee joint puncture, the patient needs to take an appropriate position and locate the puncture point according to the patient's condition, body shape or posture. In order to facilitate the medical staff to locate the puncture point and select a better puncture angle, the patient's knee joint needs to bend and the curvature needs to be adjusted appropriately. However, in clinical practice, most patients are unable to arch and bend their knee joints to the appropriate angle and keep them still. Although medical staff can assist patients in placing their knee joints in the appropriate position, the patient's joint or limb discomfort may cause the position of the limb to change, resulting in a change in the flexion angle, which is not conducive to joint puncture, resulting in unsuccessful puncture, patient discomfort during the puncture process, or complications. Summary of the Invention

[0004] The problem to be solved by the present invention is to provide an auxiliary support frame for knee arthrocentesis, which can provide support for the patient's knee joint according to the different needs during knee arthrocentesis, facilitate the patient's knee joint flexion and extension to different degrees, and is conducive to improving the puncture efficiency and treatment effect, reducing puncture complications such as bleeding and injury, and improving the patient's overall experience. The technical solution adopted is as follows:

[0005] An auxiliary support frame for knee joint puncture, comprising a bracket, characterized in that it also includes a lifting plate, a connecting plate, a fixing plate and a lifting device; the bracket is provided with two side beams extending in the front-to-back direction and opposite to each other left and right, and the left and right sides of the fixing plate are respectively installed on the rear parts of the two side beams; the front side of the fixing plate is hinged to the rear side of the connecting plate, and the front side of the connecting plate is hinged to the rear side of the lifting plate; the bracket is also provided with two first connecting rods, the lower ends of the two first connecting rods are respectively hinged to the middle parts of the two side beams, and the upper ends of the two first connecting rods are respectively hinged to the left and right sides of the lifting plate; the lifting device is arranged on the bracket, and the connecting plate is installed on the power output end of the lifting device.

[0006] The lifting plate is used to lift the patient's knee joint; the connecting plate is used to place the patient's calf after lifting the knee joint; and the fixing plate is used to place the patient's foot.

[0007] The lifting device is used to drive the connecting plate to flip upward and reset from a horizontal state; when the connecting plate flips upward, it drives the lifting plate to rise, and under the restriction of the first connecting rod, the lifting plate remains in a horizontal state during the lifting process.

[0008] During use, the lifting plate, connecting plate, and fixing plate are first placed flat at the same height. The patient then places the leg to be operated on horizontally on the auxiliary support frame, with the patient's knee joint on the lifting plate. The lifting device then drives the connecting plate to flip upward, causing the lifting plate to rise, causing the patient's knee joint to gradually bend as the lifting plate rises. At the same time, the patient's calf rests on the connecting plate, and the patient's foot is supported by the fixing plate, allowing the patient's knee joint to be extended to varying degrees. Medical staff control the lifting device to adjust the lifting plate to different heights, allowing the patient's knee joint to bend to varying degrees according to the different needs of the knee arthrocentesis, thereby improving puncture efficiency and treatment effectiveness.

[0009] As a preferred solution of the present invention, the rear edge of the lifting plate and the front edge of the connecting plate, as well as the rear edge of the connecting plate and the front edge of the fixing plate are connected by hinges.

[0010] As a further preferred embodiment of the present invention, the lifting device includes a screw rod, a movable nut, a movable rod and a second connecting rod; the screw rod is rotatable in the front and rear directions, the rear end of the screw rod is rotatably mounted on the bracket, and the front end of the screw rod serves as a driving end for driving the screw rod to rotate; the movable nut is threadedly connected to the threaded section of the screw rod, the front end of the movable rod is fixedly connected to the movable nut, the rear end of the movable rod is hinged to the lower end of the second connecting rod, the upper end of the second connecting rod is hinged to the lower surface of the connecting plate, and the upper end of the second connecting rod serves as the power output end of the lifting device.

[0011] When the screw rotates to drive the moving nut forward, the moving rod moves forward with the moving nut, causing the lower end of the second connecting rod to move forward and the upper end of the second connecting rod to move backward, thereby causing the upper end of the second connecting rod to push the connecting plate upward and backward, causing the connecting plate to flip upward and backward; under the hinged action between the connecting plate and the lifting plate, and under the limiting action of the two first connecting rods on both sides of the lifting plate, the lifting plate rises and moves backward with the connecting plate while maintaining a horizontal state. Similarly, when the screw rotates to drive the moving nut backward, the moving rod moves backward with the moving nut, causing the lower end of the second connecting rod to move backward and the upper end of the second connecting rod to move forward, thereby causing the upper end of the second connecting rod to pull the connecting plate downward and forward, causing the connecting plate to flip downward and forward, and the lifting plate also descends and moves forward with the connecting plate while maintaining a horizontal state.

[0012] As a further preferred solution of the present invention, an adjustment handle is provided at the front end of the screw rod.

[0013] As another further preferred solution of the present invention, the lifting device further includes a servo motor, and the front end of the screw rod is drivingly connected to the output shaft of the servo motor.

[0014] The screw can be driven manually or electrically to rotate and the position of the moving nut on the screw can be adjusted as needed.

[0015] Compared with the prior art, the present invention has the following advantages:

[0016] The utility model is used for the auxiliary support frame for knee joint puncture, in which the patient places the lower limb to be punctured horizontally on the auxiliary support frame, so that the patient's knee joint is on the lifting plate, and then the lifting device drives the connecting plate to flip upward to drive the lifting plate to rise, so that the patient's knee joint gradually bends as the lifting plate rises, so that the patient's knee joint can be expanded to different degrees according to the needs of puncture; medical staff adjust the lifting height of the lifting plate to different degrees by controlling the lifting device, so that the patient's knee joint can be flexed to different degrees according to different needs, thereby improving the puncture efficiency and treatment effect, reducing puncture complications, and improving the patient's feeling. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a schematic diagram of the preferred embodiment of the present invention in use;

[0018] Figure 2 for Figure 1 Detailed drawing of the middle lifting device;

[0019] Among them, the labels are: 1-bracket, 101-side beam, 102-first connecting rod, 2-lifting plate, 3-connecting plate, 4-fixed plate, 5-lifting device, 501-screw, 502-moving nut, 503-moving rod, 504-second connecting rod, 505-adjusting handle, 6-loose-leaf. DETAILED DESCRIPTION

[0020] The following is a further description of the preferred embodiments of the present invention in conjunction with the accompanying drawings.

[0021] like Figure 1 and Figure 2 As shown, an auxiliary support frame for knee joint puncture, including a bracket 1, a lifting plate 2, a connecting plate 3, a fixing plate 4 and a lifting device 5; the bracket 1 is provided with two side beams 101 extending in the front-to-back direction and opposite to each other on the left and right sides, the left and right sides of the fixing plate 4 are respectively installed on the rear parts of the two side beams 101, and the rear edge of the lifting plate 2 and the front edge of the connecting plate 3, as well as the rear edge of the connecting plate 3 and the front edge of the fixing plate 4 are hinged by a hinge 6; the bracket 1 is also provided with two first connecting rods 102, the lower ends of the two first connecting rods 102 are respectively hinged to the middle parts of the two side beams 101, and the upper ends of the two first connecting rods 102 are respectively hinged to the left and right sides of the lifting plate 2.

[0022] like Figure 1 and Figure 2 As shown, the lifting device 5 is arranged on the bracket 1, and the lifting device 5 includes a screw rod 501, a movable nut 502, a movable rod 503 and a second connecting rod 504; the screw rod 501 is rotatable in the front and rear directions, and the rear end of the screw rod 501 is rotatably mounted on the bracket, and the front end of the screw rod 501 serves as a driving end for driving the screw rod 501 to rotate. In this embodiment, the front end of the screw rod 501 is sleeved with an adjusting handle 505, and the screw rod 501 is manually rotated by adjusting the handle 505 for adjustment; the movable nut 502 is threadedly connected to the threaded section of the screw rod 501, the front end of the movable rod 503 is fixedly connected to the movable nut, the rear end of the movable rod 503 is hinged to the lower end of the second connecting rod 504, the upper end of the second connecting rod 504 is hinged to the lower surface of the connecting plate 3, and the upper end of the second connecting rod 504 serves as the power output end of the lifting device 5.

[0023] During use, the lifting plate 2, connecting plate 3, and fixing plate 4 are first placed flat at the same height. The patient then places the leg to be operated on horizontally on the auxiliary support frame, so that the patient's knee joint is on the lifting plate 2. The lifting device 5 then drives the connecting plate 3 to flip upward, driving the lifting plate 2 to rise, causing the patient's knee joint to gradually bend as the lifting plate 2 rises. At the same time, the patient's calf rests on the connecting plate 3, and the patient's foot is supported by the fixing plate 4, so that the patient's knee joint can be extended to varying degrees. Medical staff adjust the lifting plate 2 to different heights by controlling the lifting device 5, so that the patient's knee joint can bend to varying degrees according to the different requirements of the knee arthrocentesis, thereby improving the puncture efficiency and treatment effect.

[0024] To adjust the height of the lifting platform 2, manually rotate the adjustment handle 505, causing the screw rod 501 to drive the movable nut 502 forward and backward. When the screw rod 501 rotates to drive the movable nut 502 forward, the movable rod 503 moves forward with the movable nut 502, causing the lower end of the second connecting rod 504 to move forward and the upper end of the second connecting rod 504 to move backward. This in turn causes the upper end of the second connecting rod 504 to push the connecting plate 3 upward and backward, causing the connecting plate 3 to flip upward and backward. Under the hinged connection between the connecting plate 3 and the lifting platform 2, and under the restraining action of the two first connecting rods 102 on both sides of the lifting platform 2, the lifting platform 2 rises and moves backward with the connecting plate 3 while maintaining a horizontal state. Similarly, when the screw rod 501 rotates to drive the moving nut 502 to move backward, the moving rod 503 moves backward with the moving nut 502, causing the lower end of the second connecting rod 504 to move backward and the upper end of the second connecting rod 504 to move forward, thereby causing the upper end of the second connecting rod 504 to pull the connecting plate 3 downward and forward, and the connecting plate 3 flips downward and forward, and the lifting plate 2 also descends and moves forward with the connecting plate 3 while maintaining a horizontal state.

[0025] In other embodiments, the lifting device 5 may also be driven by a servo motor, and the front end of the screw rod 501 is drivingly connected to the output shaft of the servo motor.

[0026] In addition, it should be noted that the names of the various parts of the specific embodiments described in this specification may be different. Any equivalent or simple changes made based on the structure, features, and principles described in the concept of this utility model patent are included in the scope of protection of this utility model patent. Those skilled in the art of the technical field to which this utility model belongs may make various modifications or supplements to the specific embodiments described, or replace them with similar methods. As long as they do not deviate from the structure of this utility model or exceed the scope defined by this claim, they shall fall within the scope of protection of this utility model.

Claims

1. An auxiliary support frame for knee arthrocentesis, comprising a support frame, characterized in that: It also includes a lifting plate, a connecting plate, a fixed plate and a lifting device; the bracket is provided with two side beams extending in the front and rear directions and opposite to each other left and right, and the left and right sides of the fixed plate are respectively installed on the rear parts of the two side beams; the front side of the fixed plate is hinged to the rear side of the connecting plate, and the front side of the connecting plate is hinged to the rear side of the lifting plate. Two first connecting rods are also provided on the bracket, the lower ends of the two first connecting rods are respectively hinged to the middle parts of the two side beams, and the upper ends of the two first connecting rods are respectively hinged to the left and right sides of the lifting plate; the lifting device is arranged on the bracket, and the connecting plate is installed on the power output end of the lifting device.

2. The auxiliary support frame for knee arthrocentesis according to claim 1, characterized in that: The rear edge of the lifting plate and the front edge of the connecting plate, as well as the rear edge of the connecting plate and the front edge of the fixing plate are all connected via hinges.

3. The auxiliary support frame for knee arthrocentesis according to claim 1 or 2, characterized in that: The lifting device includes a screw rod, a movable nut, a movable rod and a second connecting rod; the screw rod is rotatable in the front and rear directions, the rear end of the screw rod is rotatably mounted on the bracket, and the front end of the screw rod serves as a driving end for driving the screw rod to rotate; the movable nut is threadedly connected to the threaded section of the screw rod, the front end of the movable rod is fixedly connected to the movable nut, the rear end of the movable rod is hinged to the lower end of the second connecting rod, the upper end of the second connecting rod is hinged to the lower surface of the connecting plate, and the upper end of the second connecting rod serves as the power output end of the lifting device.

4. The auxiliary support frame for knee arthrocentesis according to claim 3, characterized in that: An adjusting handle is provided at the front end of the screw rod.

5. The auxiliary support frame for knee arthrocentesis according to claim 3, characterized in that: The lifting device also includes a servo motor, and the front end of the screw rod is drivingly connected to the output shaft of the servo motor.

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