Instrument for knee joint puncture

Abstract

The knee joint puncture instrument comprises a knee bending maintaining frame and an angle adjusting mechanism, the knee bending maintaining frame is composed of a first maintaining frame body and a second maintaining frame body, the first maintaining frame body is rotatably connected with a first connecting base, and the second maintaining frame body is rotatably connected with a second connecting base; the angle adjusting mechanism is composed of an upper support, a bottom plate, a screw and a movable frame. The upper support is fixedly connected with the bottom plate, the first connecting seat and the left end of the upper support are fixedly installed, the upper support is sleeved with the movable frame, the second connecting seat and the movable frame are fixedly installed together, and the interior of the movable frame is connected with the screw rod through threads. When knee joint puncture is carried out at the horizontal knee bending position, the knee bending posture of a patient can be supported and fixed, the patient is prevented from moving legs due to pain, the knee bending posture of the patient can be kept still in the whole process, and the knee bending angle can be adjusted to be suitable for different patients.

Description

Technical Field

[0001] The utility model relates to the technical field related to knee joint puncture, in particular to an instrument for knee joint puncture. Background Art

[0002] Arthrocentesis is mainly used for joint swelling, pain, and fluid accumulation in the joint cavity due to joint injury, arthritis and other factors.

[0003] At present, knee joint puncture mainly includes three postures, namely sitting, supine position with knees flexed and supine position. The supine position with knees flexed means that the patient lies flat on the examination bed, flexes the knees, exposes the knee joint, and selects the area around the patella for puncture.

[0004] The supine position with the knees bent is easier to position, less painful, and easier for the patient to cooperate with. It is the most commonly used position for knee puncture. However, sometimes it is necessary to extract the accumulated fluid after knee puncture. The patient cannot maintain the bent knee position throughout the process and will involuntarily retract his legs due to pain. Utility Model Content

[0005] The utility model aims to provide a knee joint puncture instrument to solve the problem in the above-mentioned background technology that sometimes after knee joint puncture, it is necessary to extract the effusion, and the patient cannot keep the knee flexed posture throughout the whole process and will involuntarily retract the leg due to pain.

[0006] The utility model is implemented by the following technical scheme: a knee joint puncture instrument, comprising a knee flexion maintaining frame and an angle adjustment mechanism, the knee flexion maintaining frame is composed of a first maintaining frame and a second maintaining frame, the first maintaining frame and the second maintaining frame are rotatably connected, and the end of the first maintaining frame is rotatably connected to the first connecting seat, and the end of the second maintaining frame is rotatably connected to the second connecting seat, and the angle adjustment mechanism is composed of an upper bracket, a bottom plate, a screw and a moving frame;

[0007] The upper bracket is in an N shape, and the bottom of the upper bracket is fixedly connected to the bottom plate, the first connecting seat is fixedly installed with the left end of the upper bracket, the mobile frame is sleeved on the upper bracket, and the second connecting seat is fixedly installed with the mobile frame, and the inside of the mobile frame is connected to the screw rod through a thread; the screw rod passes through the right end of the upper bracket and is limited by a limit block,

[0008] The movable frame is composed of a bending plate, a strip plate and a movable part. The bending plate and the strip plate are fixedly connected, and the bending plate spans the upper bracket. The strip plate contacts the upper surface of the bottom plate. At the same time, the movable part is fixedly installed on the upper surface of the strip plate, and the movable part is connected to the screw by a thread.

[0009] As a further solution of the utility model: a rotating handle is installed at the end of the screw rod.

[0010] As a further solution of the utility model: the first retaining frame and the second retaining frame have the same structure, both of which are formed by two plates connected by bolts, one of the plates is provided with a waist-shaped hole for mounting bolts, and the length of the first retaining frame and the second retaining frame can be adjusted by loosening the bolts.

[0011] As a further solution of the utility model: soft pads are installed on the upper surfaces of the first retaining frame and the second retaining frame.

[0012] As a further solution of the utility model: restraint belts are installed on the first retaining frame and the second retaining frame.

[0013] As a further solution of the utility model: a layer of cushion is arranged on the upper surface of the upper bracket.

[0014] Advantages of the utility model: the utility model can provide support and fixation for the patient's kneeling posture when performing knee joint puncture in the supine position with the knees bent, thereby preventing the patient from moving the legs due to pain, allowing the patient to maintain the kneeling posture throughout the whole process, and the kneeling angle can be adjusted to suit different patients. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0016] Figure 1 The three-dimensional structure of the utility model is shown in FIG. Figure 1 ;

[0017] Figure 2 The three-dimensional structure of the utility model is shown in FIG. Figure 2 ;

[0018] Figure 3 It is a front view structural schematic diagram of the utility model.

[0019] In the figure, 1. knee flexion maintenance frame; 11. first maintenance frame; 111. first connecting seat; 12. second maintenance frame; 121. second connecting seat; 122. waist-shaped hole; 13. cushion; 14. restraint belt; 2. angle adjustment mechanism; 21. upper bracket; 211. cushion; 22. bottom plate; 23. screw; 231. rotating handle; 232. limit block; 24. moving frame; 241. bending plate; 242. strip plate; 243. movable part. DETAILED DESCRIPTION

[0020] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0021] See also Figure 1-Figure 3 In an embodiment of the utility model, a knee joint puncture instrument includes a knee flexion maintenance frame 1 and an angle adjustment mechanism 2. The knee flexion maintenance frame 1 is composed of a first maintenance frame 11 and a second maintenance frame 12. The first maintenance frame 11 and the second maintenance frame 12 are rotatably connected, and the end of the first maintenance frame 11 is rotatably installed with a first connecting seat 111, and the end of the second maintenance frame 12 is rotatably connected with a second connecting seat 121. The angle adjustment mechanism 2 is composed of an upper bracket 21, a bottom plate 22, a screw 23 and a moving frame 24;

[0022] The upper bracket 21 is in an N shape, and the bottom of the upper bracket 21 is fixedly connected to the bottom plate 22, the first connecting seat 111 is fixedly installed to the left end of the upper bracket 21, the movable frame 24 is sleeved on the upper bracket 21, and the second connecting seat 121 is fixedly installed to the movable frame 24, the inside of the movable frame 24 is connected to the screw 23, and the screw 23 is rotated, and the movable frame 24 will move forward and backward along the screw 23.

[0023] The moving frame 24 is composed of a bending plate 241, a strip plate 242 and a movable part 243. The bending plate 241 and the strip plate 242 are fixedly connected, and the bending plate 241 crosses the upper bracket 21. The strip plate 242 contacts the upper surface of the bottom plate 22. At the same time, the movable part 243 is fixedly installed on the upper surface of the strip plate 242, and the movable part 243 is connected to the screw rod 23 by a thread. The screw rod 23 passes through the right end of the upper bracket 21 and is limited by a limit block 232. The limit block 232 is used to limit the forward and backward movement of the screw rod 23, and a rotating handle 231 is installed at the end of the screw rod 23.

[0024] The usage and principle of the utility model are as follows: the operator rotates the rotating handle 231 to rotate the screw rod 23, thereby driving the movable member 243 to move forward and backward along the screw rod 23. Since the movable member 243 is fixedly connected with the bending plate 241 and the strip plate 242 to form an integral moving frame 24, the moving frame 24 will move forward and backward, thereby moving the position of the second connecting seat 121. Since the position of the first connecting seat 111 is fixed, the position of the second connecting seat 121 changes, which will change the angles of the first retaining frame 11 and the second retaining frame 12.

[0025] The patient's legs are placed on the first supporting frame 11 and the second supporting frame 12 to maintain a knee flexion posture. The angle of the first supporting frame 11 and the second supporting frame 12 is the patient's knee flexion angle. Soft cushions 13 are installed on the upper surfaces of the first supporting frame 11 and the second supporting frame 12, and the patient's legs are in contact with the soft cushions 13. In addition, restraints 14 are installed on the first supporting frame 11 and the second supporting frame 12, and the restraints 14 can be used to fix the patient's legs to prevent accidental movement of the patient's legs.

[0026] A cushion 211 is provided on the upper surface of the upper support 21. When in use, the patient's thigh rests on the first support frame 11 and the calf rests on the second support frame 12. Patients with long legs can place their feet on the upper surface of the upper support 21 and rotate the handle 231 outwards to facilitate adjustment by the operator.

[0027] The lengths of the first retaining frame 11 and the second retaining frame 12 are adjustable. Figure 1 As shown, the first retaining frame 11 and the second retaining frame 12 have the same structure. Both are formed by two plates connected by bolts. One of the plates is provided with a waist-shaped hole 122 for installing the bolts. By loosening the bolts, the length of the first retaining frame 11 and the second retaining frame 12 can be adjusted; or the first retaining frame 11 and the second retaining frame 12 can be set to a variety of sizes for easy use by patients of different heights.

[0028] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A knee joint puncture instrument, comprising a knee flexion retainer (1) and an angle adjustment mechanism (2), characterized in that: The knee flexion support frame (1) is composed of a first support frame (11) and a second support frame (12); the first support frame (11) and the second support frame (12) are rotatably connected, and the end of the first support frame (11) is rotatably connected to the first connecting seat (111), and the end of the second support frame (12) is rotatably connected to the second connecting seat (121); the angle adjustment mechanism (2) is composed of an upper bracket (21), a bottom plate (22), a screw (23) and a movable frame (24); The upper bracket (21) is in an N-shape, and the bottom of the upper bracket (21) is fixedly connected to the bottom plate (22), the first connecting seat (111) is fixedly installed with the left end of the upper bracket (21), the movable frame (24) is sleeved on the upper bracket (21), and the second connecting seat (121) is fixedly installed with the movable frame (24), and the interior of the movable frame (24) is connected to the screw rod (23) through a thread; the screw rod (23) passes through the right end of the upper bracket (21) and is limited by a limit block (232). The movable frame (24) is composed of a bending plate (241), a strip plate (242) and a movable member (243). The bending plate (241) and the strip plate (242) are fixedly connected, and the bending plate (241) spans the upper bracket (21). The strip plate (242) contacts the upper surface of the bottom plate (22). At the same time, the movable member (243) is fixedly installed on the upper surface of the strip plate (242), and the movable member (243) is connected to the screw rod (23) by a thread.

2. A knee joint puncture instrument according to claim 1, characterized in that: And a rotating handle (231) is installed at the end of the screw rod (23).

3. A knee joint puncture instrument according to claim 1, characterized in that: The first retaining frame (11) and the second retaining frame (12) have the same structure, and are both formed by two plates connected by bolts, one of the plates being provided with a waist-shaped hole (122) for mounting the bolts.

4. A knee joint puncture instrument according to claim 1, characterized in that: Soft pads (13) are installed on the upper surfaces of the first retaining frame (11) and the second retaining frame (12).

5. The knee joint puncture instrument according to claim 1, characterized in that: A restraining belt (14) is installed on the first retaining frame (11) and the second retaining frame (12).

6. The knee joint puncture instrument according to claim 1, characterized in that: A layer of cushion (211) is provided on the upper surface of the upper bracket (21).

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