Joint cavity puncture auxiliary positioning device

Abstract

The application provides a joint cavity puncture auxiliary positioning device, which comprises a base, a liftable lifting frame arranged on the base, a hinged mounting frame arranged at one end of the lifting frame, two groups of swingable supporting rods arranged on the mounting frame, a mounting frame arranged in the mounting frame, a movable frame slidably arranged in the mounting frame, a control assembly arranged on the mounting frame and used for driving the movable frame to slide, a first fixing assembly arranged on the movable frame and connected with the lifting frame, a second fixing assembly arranged on the movable frame and connected with the supporting rods, a hinged bracket arranged at one end of each of the two groups of supporting rods, and a third fixing assembly arranged on the bracket and used for fixing the bracket on the supporting rod. The device can realize the adjustment and position fixing of the two groups of brackets at any angle, and fix the limbs of a patient through the brackets, so that the joints of the patient at various positions are fixed at multiple angles, the displacement of the joints of the patient during the operation is avoided, and the joint cavity puncture work is more stable.

Description

Technical Field

[0001] This invention specifically relates to an auxiliary positioning device for joint cavity puncture. Background Technology

[0002] Joint aspiration is a common diagnostic and therapeutic technique in rheumatology and immunology, playing a vital role in the field. Performed under aseptic conditions, joint aspiration involves inserting a needle into the joint cavity to extract fluid, allowing for assessment of its nature and providing information for clinical diagnosis. It can also be used to inject medications into the joint to treat joint diseases. During the procedure, joint immobilization is necessary. Traditional manual immobilization methods are often unstable, so specialized joint immobilization devices are frequently used to position the patient's limb.

[0003] For example, Chinese invention patent application number 202211114407.8 provides an auxiliary device for intra-articular puncture. This device can adjust the position of the foot pedal to provide stable support for the patient's foot, thereby preventing the lower leg from bearing prolonged stress during treatment and improving the treatment effect. However, since intra-articular puncture is not limited to leg joints but also involves elbow or shoulder joints, most transmission-type intra-articular puncture locators are not convenient for multi-angle positioning of joints at different locations. This reduces the applicability of traditional auxiliary fixation devices and fails to meet the needs of various treatment situations. Summary of the Invention

[0004] To address the shortcomings of existing technologies, this invention proposes an auxiliary positioning device for joint cavity puncture, which solves the technical problem mentioned in the background art that traditional joint cavity puncture locators are mostly inconvenient for multi-angle positioning of joints at different locations.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a joint cavity puncture auxiliary positioning device, comprising:

[0006] A base, on which a liftable lifting frame is provided;

[0007] The mounting frame is hinged to one end of the lifting frame. The mounting frame is provided with two sets of swingable support rods, and the mounting frame is provided inside the mounting frame.

[0008] The movable frame is slidably disposed within the mounting frame, and the mounting bracket is provided with a control component for driving the movable frame to slide.

[0009] A first fixing component is disposed on the movable frame and connected to the lifting frame to fix the position of the rotating mounting frame;

[0010] A second fixing component is disposed on the movable frame and connected to the support rod to fix the positions of the two sets of swinging support rods; and

[0011] The bracket is provided in two sets, and each set is hinged to one end of the two sets of support rods. The bracket is provided with a third fixing component for fixing the position of the bracket on the support rod.

[0012] In a preferred embodiment, a support frame is provided on the base, and a threaded rod that can rotate along its axis is provided inside the support frame. The lifting frame is slidably connected to the support frame along its axial extension direction, and a threaded sleeve is provided on the lifting frame. The threaded sleeve is sleeved on the threaded rod and screwed to it.

[0013] In a preferred embodiment, a connecting post is provided at one end of the movable frame, the connecting post being slidably inserted through the mounting frame along its axis and extending outward, and a first elastic element is provided between the other end of the movable frame and the mounting frame.

[0014] In a preferred embodiment, the control component includes:

[0015] A control lever, which slides along its axis on the mounting bracket, has a groove on the movable frame, one end of the control lever passes through the groove and is equipped with a push rod, and the other end is equipped with a press plate; and

[0016] A wedge-shaped block is disposed within the movable frame, and the push rod abuts against the inclined surface of the wedge-shaped block.

[0017] In a preferred embodiment, the first fixing component includes:

[0018] A first locking block is disposed at the end of the connecting post that protrudes outward from the mounting bracket; and

[0019] An installation shaft is mounted on the lifting frame. The mounting frame and the installation shaft are rotatably connected along their axis. Multiple sets of first fixing grooves are circumferentially spaced on the installation shaft, and the first locking block is locked in one set of the first fixing grooves.

[0020] In a preferred embodiment, the second fixing component includes:

[0021] The second locking block is provided in two sets, and is slidably disposed on both sides of the mounting frame. One end of the second locking block passes through the movable frame and extends outward.

[0022] A connecting ring is disposed at one end of the support rod and sleeved on the mounting bracket. Multiple sets of second fixing grooves are distributed circumferentially at intervals on the connecting ring, and one end of the second locking block is locked in one set of the second fixing grooves.

[0023] A stop block is provided on the second locking block, and

[0024] Fixed protrusions are provided on both sides of the movable frame. When the movable frame is in its initial position, the fixed protrusions abut against the stop block.

[0025] In a preferred embodiment, each of the two sets of second blocks is provided with a baffle, and a second elastic member is provided between the two sets of baffles.

[0026] In a preferred embodiment, the mounting bracket has a gripping hole.

[0027] In a preferred embodiment, the third fixing component includes:

[0028] A fixed gear is disposed at one end of the support rod;

[0029] A connecting sleeve, disposed on the bracket, is rotatably connected to the fixed gear along its axis; and

[0030] A threaded knob is threaded onto and screwed onto the connecting sleeve. One end of the threaded knob is provided with a fixing head, which is engaged with the fixing gear.

[0031] In a preferred embodiment, the bracket is provided with straps.

[0032] Compared with the prior art, the present invention has the following beneficial effects:

[0033] 1. In use, the base of this device is fixed in the operating area. After adjusting the lifting frame to a suitable height, the control component drives the movable frame to slide within the mounting frame. During the sliding process, the movable frame releases the position fixation of the mounting frame via the first fixing component and releases the position fixation of the two sets of support rods via the second fixing component. The mounting frame can then be rotated along the hinge point between the lifting frame and the mounting frame to adjust the position of the two sets of brackets on the first plane. Then, the support rods are rotated along their connection points with the mounting frame to adjust the position of the two sets of brackets on the second plane. Finally, the two sets of brackets are rotated along their connection points with the support rods to adjust the position of the two sets of brackets on the third plane. The normal vectors of the first, second, and third planes are perpendicular to each other, allowing for arbitrary angle adjustment and position fixation of the two sets of brackets. Finally, the brackets are used to fix the patient's limbs, facilitating multi-angle fixation of joints in various parts of the patient's body. This improves the applicability of the device, prevents joint displacement during surgery, and makes joint cavity puncture more stable.

[0034] 2. When using this device, simply pressing the button will cause the push rod to move downwards within the movable frame. During this movement, the push rod, through its contact with the inclined surface of the wedge block, pushes the movable frame to slide within the mounting frame, causing the first locking block to disengage from the first fixed groove. Simultaneously, this causes the fixed protrusion to move, disengaging from its contact with the two sets of stop blocks, thus releasing the fixation of the second locking block. The mounting frame can then be rotated along the mounting axis while the support rod is rotated at the connection between the support rod and the mounting frame, allowing for rapid adjustment of the bracket in two directions. After adjustment, releasing the button will cause the sliding frame to reset under the action of the first elastic element, causing the first locking block to re-engage into the corresponding first fixed groove. Simultaneously, the fixed protrusion will again contact the stop block, pushing the two sets of second locking blocks back into their corresponding second fixed grooves and fixing their positions. This makes bracket adjustment more efficient and saves debugging time during device use. Attached Figure Description

[0035] To more clearly illustrate the specific embodiments of the present invention, the accompanying drawings used in the specific embodiments will be briefly described below. In all the drawings, the elements or parts are not necessarily drawn to scale.

[0036] Figure 1 A three-dimensional structural schematic diagram of an auxiliary positioning device for joint cavity puncture provided by the present invention;

[0037] Figure 2 This is a schematic diagram of the lifting frame and mounting frame in the joint cavity puncture auxiliary positioning device of the present invention;

[0038] Figure 3 This is a schematic diagram of the internal structure of the mounting frame in the joint cavity puncture auxiliary positioning device of the present invention;

[0039] Figure 4 This is a schematic diagram of the movable frame in an auxiliary positioning device for joint cavity puncture according to the present invention;

[0040] Figure 5 This is a schematic diagram of the bracket in the joint cavity puncture auxiliary positioning device of the present invention;

[0041] Figure label:

[0042] 101. Base; 102. Support frame; 103. Threaded rod;

[0043] 201. Lifting frame; 202. Threaded sleeve; 203. Mounting shaft; 204. First fixing groove;

[0044] 301. Mounting bracket; 302. Grip hole; 303. Mounting frame;

[0045] 401. Movable frame; 402. Connecting post; 403. First locking block; 404. Slide groove; 405. Fixing protrusion; 406. Wedge block; 407. First elastic element;

[0046] 501. Baffle; 502. Stop block; 503. Second locking block; 504. Second elastic element;

[0047] 601. Control lever; 602. Push lever; 603. Button;

[0048] 701. Connecting ring; 702. Second fixing groove; 703. Support rod; 704. Fixing gear;

[0049] 801. Bracket; 802. Connecting sleeve; 803. Threaded knob; 804. Fixing head; 805. Strap. Detailed Implementation

[0050] The embodiments of the technical solution of the present invention will now be described in detail with reference to the accompanying drawings. These embodiments are merely illustrative of the technical solution of the present invention and are therefore intended to limit the scope of protection of the present invention.

[0051] Example:

[0052] like Figure 1 As shown, the present invention provides an auxiliary positioning device for joint cavity puncture, including a base 101, a liftable lifting frame 201 on the base 101, a support frame 102 on the base 101, a threaded rod 103 rotatable along its axis inside the support frame 102, the lifting frame 201 and the support frame 102 being slidably connected along their axial extension direction, and a threaded sleeve 202 on the lifting frame 201, the threaded sleeve 202 being sleeved on the threaded rod 103 and screwed to it.

[0053] The threaded rod 103 can be rotated to drive the threaded sleeve 202 to rise and fall. During the rising and falling process, the threaded sleeve 202 can drive the lifting frame 201 to rise and fall, thereby adjusting the operating height of the device. It is understood that in some embodiments, the rotation of the threaded rod 103 can be set to manual rotation or motor-controlled rotation.

[0054] like Figure 3 As shown, in this embodiment, one end of the lifting frame 201 is provided with a hinged mounting frame 301, the mounting frame 301 is provided with a mounting frame 303, the mounting frame 303 is provided with a slidingly mounted movable frame 401, the mounting frame 301 is provided with a control component for driving the movable frame 401 to slide, one end of the movable frame 401 is provided with a connecting post 402, the connecting post 402 slides along its axis through the mounting frame 301 and extends outward, and the other end of the movable frame 401 is provided with a first elastic member 407 between the mounting frame 303 and the other end of the movable frame 401.

[0055] When the movable frame 401 is slidable by the control component, the movement of the movable frame 401 is positioned by the connecting column 402. At the same time, the movable frame 401 compresses the first elastic element 407 during the movement, so that the first elastic element 407 can control the movable frame 401 to reset when there is no external force.

[0056] like Figure 3 , 4 As shown, in this embodiment, the control component includes a control rod 601 that slides along its axis on the mounting frame 301. A groove 404 is provided on the movable frame 401. One end of the control rod 601 passes through the groove 404 and is fitted with a push rod 602. The other end is fitted with a press plate 603. A wedge block 406 is provided inside the movable frame 401, and the push rod 602 abuts against the inclined surface of the wedge block 406. Pressing the press plate 603 can move the push rod 602 downwards. During this movement, the push rod 602, through its contact with the inclined surface of the wedge block 406, causes the movable frame 401 to slide within the mounting frame 303.

[0057] like Figure 1 , 2 As shown in Figure 3, in this embodiment, the mounting frame 301 is provided with two sets of swingable support rods 703, and one end of the support rod 703 is provided with a bracket 801. The movable frame 401 is provided with a first fixing component connected to the lifting frame 201. The position of the rotating mounting frame 301 is fixed by the first fixing component. The first fixing component includes a connecting post 402 exposed on the mounting frame 301 and a first locking block 403 extending outward. The lifting frame 201 is provided with a mounting shaft 203. The mounting frame 301 and the mounting shaft 203 are rotatably connected along their axis. The mounting shaft 203 is provided with multiple sets of first fixing grooves 204 spaced circumferentially. The first locking block 403 is locked in one set of first fixing grooves 204.

[0058] During the sliding process of the movable frame 401 caused by pressing the button 603, the first locking block 403 moves away from the first fixed groove 204 via the movable frame 401, allowing the mounting bracket 301 to rotate along the mounting shaft 203 to adjust the position of the two sets of brackets 801 on the first plane. After adjustment, releasing the button 603 controls the movable frame 401 to reset under the action of the first elastic element 407, so that the first locking block 403 is once again locked into the corresponding first fixed groove 204, thus completing the fixation of the position of the mounting bracket 301.

[0059] like Figure 3 , 4As shown in Figure 5, in this embodiment, a second fixing component connected to the support rod 703 is provided on the movable frame 401. The second fixing component fixes the positions of the two sets of swinging support rods 703. The second fixing component includes two sets of second locking blocks 503, which are slidably disposed on both sides of the mounting frame 303. One end of the second locking block 503 passes through the movable frame 401 and extends outward. One end of the support rod 703 is provided with a connecting ring 701, which is sleeved on the mounting frame 301. Multiple sets of second fixing grooves 702 are distributed circumferentially on the connecting ring 701. One end of the second locking block 503 is locked in one set of second fixing grooves 702. A stop block 502 is provided on the second locking block 503. Fixing protrusions 405 are provided on both sides of the movable frame 401. When the movable frame 401 is in its initial position, the fixing protrusions 405 abut against the stop blocks 502.

[0060] In the initial state, the positions of the two sets of second locking blocks 503 are fixed by the contact between the fixed protrusion 405 and the stop block 502, and then the position of the support rod 703 is fixed by the cooperation between the second locking block 503 and the second fixing groove 702. When the button plate 603 is pressed, causing the movable frame 401 to slide, the movable frame 401 drives the fixed protrusion 405 to move, causing it to disengage from the stop block 502, thereby releasing the fixation of the second locking block 503. The support rod 703 can then be rotated to adjust the position of the bracket 801 on the second plane. Each set of second locking blocks 503 is provided with a baffle 501, and a second elastic element 504 is provided between the two sets of baffles 501. During the rotation of the support rod 703, the second elastic element 504 can push the second locking block 503 to remain locked in the second fixing groove 702, thus pre-fixing the position of the support rod 703 for easier adjustment. Furthermore, a gripping hole 302 is provided on the mounting bracket 301. By holding the gripping hole 302 and pressing the button 603, the control of the movable frame 401 becomes more convenient and effortless.

[0061] like Figure 1 , 5 As shown, in this embodiment, the bracket 801 is hinged to one end of the support rod 703, and a third fixing component is provided on the bracket 801 for fixing the position of the bracket 801 on the support rod 703. The third fixing component includes a fixing gear 704 at one end of the support rod 703, a connecting sleeve 802 on the bracket 801, and the connecting sleeve 802 and the fixing gear 704 are rotatably connected along their axis. A threaded knob 803 is threaded through the connecting sleeve 802, and a fixing head 804 is provided at one end of the threaded knob 803, which is engaged with the fixing gear 704.

[0062] By rotating the threaded knob 803, the fixing head 804 can be moved to disengage from the fixing gear 704, allowing the bracket 801 to rotate along the axis of the connecting sleeve 802 for adjustment on the third plane. Then, rotating the threaded knob 803 in the opposite direction causes the fixing head 804 to lock onto the fixing gear 704 again, fixing the position of the bracket 801. This allows for multi-directional adjustment of the bracket 801. The normal vectors of the first, second, and third planes are perpendicular to each other, enabling the two sets of brackets 801 to be adjusted at any angle. After adjustment, the patient's limb is placed in the bracket 801 and secured with the strap 805. This facilitates the fixation of the patient's limb according to different joints, increasing the applicability of the device and making joint cavity puncture surgery more convenient.

[0063] Specific usage and beneficial effects of the present invention:

[0064] In use, the base 101 is fixed in the operating area. After adjusting the lifting frame 201 to a suitable height by rotating the threaded rod 103, pressing the button 603 causes the push rod 602 to move downward. Under the engagement of the push rod 602 and the inclined surface of the wedge block 406, the movable frame 401 slides within the mounting frame 303. During the sliding process, the movable frame 401 causes the first locking block 403 to slide out of the first fixing groove 204, thereby releasing the fixation of the mounting frame 301. It also causes the fixing protrusion 405 to move out of the stop block 502, thereby releasing the fixation of the second locking block 503. This releases the fixation of the two sets of support rods 703, allowing the mounting frame 301 to be rotated along the hinge point between the lifting frame 201 and the mounting frame 301, thus adjusting the position of the two sets of brackets 801 on the first plane. Adjust the support rod 703 and rotate it along its connection point with the mounting bracket 301 to adjust the position of the two brackets 801 on the second plane. Then, rotate the two brackets 801 along their connection point with the support rod 703 and adjust and fix their position on the third plane through the cooperation of the fixing head 804 and the fixing gear 704 on the threaded knob 803. The normal vectors of the first, second, and third planes are perpendicular to each other, which allows for arbitrary angle adjustment and position fixation of the two brackets 801. Finally, the patient's limb is fixed by the brackets 801, which facilitates multi-angle fixation of joints in various parts of the patient, improves the applicability of the device, avoids joint displacement during surgery, and makes joint cavity puncture more stable.

[0065] In use, pressing the button 603 will cause the push rod 602 to move downward within the movable frame 401. During this movement, the push rod 602 pushes the movable frame 401 to slide within the mounting frame 303 by abutting against the inclined surface of the wedge block 406. This causes the first locking block 403 to disengage from the first fixing groove 204, and simultaneously moves the fixing protrusion 405, causing it to disengage from the abutment of the two sets of stop blocks 502, thus releasing the fixation of the second locking block 503. This allows the mounting frame 301 to rotate along the mounting shaft 203 while simultaneously moving along the support rod 703 and the mounting frame 303. Rotate the support rod 703 at the connection point of 01 to quickly adjust the bracket 801 in two directions. After adjustment, release the button 603. Under the action of the first elastic element 407, control the slide frame to reset, so that the first locking block 403 is locked into the corresponding first fixing groove 204 again. At the same time, the fixing protrusion 405 abuts against the stop block 502 again, pushing the two sets of second locking blocks 503 to be locked into the corresponding second fixing groove 702 again and fixing their positions. This makes the adjustment of the bracket 801 more efficient and saves the debugging time when using the device.

[0066] The foregoing has shown and described the basic principles and main features of the present invention and its advantages. It will be apparent to those skilled in the art that the present invention is not limited to the details of the above exemplary embodiments.

Claims

1. A joint cavity puncture auxiliary positioning device, characterized in that, Including: A base (101) is provided with a liftable lifting frame (201). The mounting bracket (301) is hinged to one end of the lifting frame (201). The mounting bracket (301) is provided with two sets of swingable support rods (703). The mounting bracket (301) is provided with a mounting frame (303). The movable frame (401) is slidably disposed within the mounting frame (303), and the mounting frame (301) is provided with a control component for driving the movable frame (401) to slide. The first fixing component is disposed on the movable frame (401) and connected to the lifting frame (201) to fix the position of the rotated mounting frame (301); A second fixing component is disposed on the movable frame (401) and connected to the support rod (703) to fix the position of the two sets of swinging support rods (703); and The bracket (801) is provided in two sets and is respectively hinged to one end of the two sets of support rods (703). The bracket (801) is provided with a third fixing component for fixing the position of the bracket (801) on the support rod (703). One end of the movable frame (401) is provided with a connecting post (402), the connecting post (402) slides along its axis through the mounting frame (301) and extends outward, and the other end of the movable frame (401) is provided with a first elastic member (407) between the mounting frame (303) and the mounting frame (301). The control component includes: A control lever (601) is slidably mounted on the mounting bracket (301) along its axis. A groove (404) is provided on the movable frame (401). One end of the control lever (601) passes through the groove (404) and is equipped with a push rod (602). The other end is equipped with a button plate (603). A wedge block (406) is disposed within the movable frame (401), and the push rod (602) abuts against the inclined surface of the wedge block (406); The first fixing component includes: The first locking block (403) is disposed at the end of the connecting post (402) that protrudes outward from the mounting bracket (301); and The mounting shaft (203) is mounted on the lifting frame (201). The mounting frame (301) and the mounting shaft (203) are rotatably connected along their axis. Multiple sets of first fixing grooves (204) are circumferentially spaced on the mounting shaft (203). The first locking block (403) is locked in one set of the first fixing grooves (204). The second fixing component includes: The second card block (503) is provided in two sets and is slidably disposed on both sides of the mounting frame (303). One end of the second card block (503) passes through the movable frame (401) and extends outward. A connecting ring (701) is provided at one end of the support rod (703) and sleeved on the mounting bracket (301). Multiple sets of second fixing grooves (702) are distributed circumferentially on the connecting ring (701), and one end of the second locking block (503) is locked in one set of the second fixing grooves (702). The stop block (502) is disposed on the second locking block (503), and A fixed protrusion (405) is provided on both sides of the movable frame (401). When the movable frame (401) is in its initial position, the fixed protrusion (405) abuts against the stop block (502). Both sets of the second card blocks (503) are provided with baffles (501), and a second elastic element (504) is provided between the two sets of baffles (501). The axis of the mounting shaft (203), the axis of the connecting ring (701), and the bracket (801) are perpendicular to each other along the rotation axis of the support rod (703).

2. The joint cavity puncture auxiliary positioning device according to claim 1, characterized in that: A support frame (102) is provided on the base (101), and a threaded rod (103) that can rotate along its axis is provided inside the support frame (102). The lifting frame (201) is slidably connected to the support frame (102) along its axial extension direction, and a threaded sleeve (202) is provided on the lifting frame (201). The threaded sleeve (202) is sleeved on the threaded rod (103) and screwed to it.

3. The joint cavity puncture auxiliary positioning device according to claim 1, characterized in that: The mounting bracket (301) has a gripping hole (302).

4. The joint cavity puncture auxiliary positioning device according to claim 1, characterized in that, The third fixing component includes: A fixed gear (704) is disposed at one end of the support rod (703); A connecting sleeve (802) is disposed on the bracket (801) and rotatably connected to the fixed gear (704) along its axis; and A threaded knob (803) is threaded onto and screwed onto the connecting sleeve (802). One end of the threaded knob (803) is provided with a fixing head (804), which is engaged with the fixing gear (704).

5. The joint cavity puncture auxiliary positioning device according to claim 1, characterized in that: The bracket (801) is provided with a strap (805).

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