A multifunctional adjustable bracket

Abstract

The invention discloses a multifunctional adjustable bracket, which solves the inflexibility of the previous external fixing bracket and the problem of elastic pressurization according to the principle of maintaining the tension of the external bracket by adjusting the length of the bracket, improves the fracture healing rate and reduces the complications caused by long-term bed rest; the technical scheme adopted is: a connecting plate is fixedly arranged at the end of the rod body, an arc-shaped through hole is arranged on the connecting plate, at least two columnar adjustment blocks are arranged in the arc-shaped through hole, the columnar adjustment block is convex and penetrates the arc-shaped through hole, the columnar adjustment block can slide back and forth along the arc-shaped through hole, and can also rotate freely around its own central axis, a fastener is arranged at the thinner end of the columnar adjustment block, and a pinhole is arranged at the other end of the columnar adjustment block, the pinhole penetrates the columnar adjustment block, and the pinhole is used for inserting a first fixing pin; the sliding needle holder is a convex structure, and the other end of the sliding needle holder is sequentially covered with a lower clamping plate and an upper clamping plate, and the upper clamping plate fixes the second fixing pin to the lower clamping plate by a bolt.

Description

Technical Field

[0001] The invention discloses a multifunctional adjustable bracket, belonging to the technical field of medical equipment. Background Art

[0002] Currently, patients with calcaneal fractures, surgical neck of humerus, and intercondylar fractures of humerus are treated with open surgery, which is prone to bleeding, trauma, and organ interference. In the past, patients with calcaneal fractures, surgical neck of humerus, and intercondylar fractures of humerus only had rigid fixation after internal fixation due to osteoporosis in the elderly and high-energy injuries in young and middle-aged people, but no elastic compression effect, resulting in low fracture healing rate, prolonged bed rest, and even complications. Summary of the invention

[0003] The present invention overcomes the shortcomings of the prior art and provides a multifunctional adjustable bracket. The adjustable length of the bracket is used to maintain the tension of the external frame, thereby solving the inflexibility of previous external fixation brackets and the problem of elastic pressurization, thereby improving the fracture healing rate and reducing complications caused by long-term bed rest.

[0004] In order to solve the above technical problems, the technical solution adopted by the present invention is: a multifunctional adjustable bracket, including a rod body, a connecting plate is fixedly provided at the end of the rod body, an arc-shaped through hole is provided on the connecting plate, at least two columnar adjustment blocks are provided in the arc-shaped through hole, the columnar adjustment block is convex and penetrates the arc-shaped through hole, the columnar adjustment block can reciprocate along the arc-shaped through hole, and can also rotate freely around its own central axis, a fastener is provided at the thinner end of the columnar adjustment block, the fastener is used to fix the columnar adjustment block on the connecting plate, a pinhole is provided at the other end of the columnar adjustment block, the pinhole penetrates the columnar adjustment block, and the central axis of the pinhole is perpendicular to the central axis of the columnar adjustment block, and the pinhole is used to insert a first fixing pin;

[0005] The rod body is movably provided with a first sliding block and a second sliding block, and the first sliding block and the second sliding block can be fixed to the rod body by screws, a lead screw is arranged between the first sliding block and the second sliding block, the lead screw is arranged parallel to the rod body, one end of the lead screw is movably arranged on the first sliding block, the other end of the lead screw penetrates the second sliding block, and a screw nut is arranged at the end extending out of the second sliding block, the screw nut is fixedly arranged together with the lead screw, and the lead screw is driven to rotate by rotating the screw nut;

[0006] A sliding needle holder is correspondingly mounted on the rod body and the lead screw between the first sliding block and the second sliding block, and an internal thread is arranged in the hole in which the sliding needle holder and the lead screw are correspondingly mounted, so that the sliding needle holder can reciprocate along the rod body when the lead screw rotates, and a second fixed needle is fixedly arranged on the sliding needle holder.

[0007] The sliding needle holder has a convex structure, and the thicker end of the sliding needle holder is mounted on the rod body and the lead screw, and the other end of the sliding needle holder is mounted with a lower clamping plate and an upper clamping plate in sequence, and semicircular guide grooves are provided on the opposite sides of the lower clamping plate and the upper clamping plate, and the corresponding semicircular guide grooves on the lower clamping plate and the upper clamping plate cooperate to form a circular clamping hole, and the clamping hole is used to clamp the second fixed needle, and the upper clamping plate fixes the second fixed needle to the lower clamping plate by bolts.

[0008] The sliding needle frame is a columnar structure, and gear teeth are arranged on the contact surface between the lower clamping plate and the sliding needle frame, and the gear teeth are used for self-locking between the lower clamping plate and the sliding needle frame.

[0009] The rod body and the connecting plate are integrally formed, and a scale is arranged on the rod body between the first sliding block and the second sliding block, and the scale is used to accurately control the moving position of the sliding needle holder on the lead screw.

[0010] The first fixing needle is fixed by a fastening screw arranged at the end of the cylindrical adjustment block.

[0011] The axial direction of the rod body is perpendicular to the plane where the connecting plate is located.

[0012] The rod body is fixedly arranged in the middle of the connecting plate, and the two arc-shaped through holes are symmetrically arranged on both sides of the rod body.

[0013] When the number of fixing pins needs to be increased, it can be done by additionally connecting an L-shaped connecting plate, on which an L-shaped connecting plate is provided, and connecting screw holes are provided on the short plate of the L-shaped connecting plate, and the connecting screw holes are connected to the arc-shaped through holes of the connecting plate through fasteners, and a long through hole is provided on the long plate of the L-shaped connecting plate, and the long through hole is used to install a columnar adjustment block.

[0014] Compared with the prior art, the present invention has the following beneficial effects: the present invention utilizes a minimally invasive external fixator to elastically treat calcaneal, humeral surgical neck, and humeral intercondylar fractures, thereby reducing the patient's non-incision trauma, bleeding, and other risks, reducing the incidence of deformities and venous thrombosis, and improving the fracture healing rate, so that the patient can get out of bed earlier, and the operation is simple, especially in the calcaneal region, so that early emergency surgery or initial perioperative treatment can be performed, and soft tissue damage and skin necrosis caused by surgical incision, internal fixation placement and fixation breakage, and reoperation can be avoided, and the present invention is easy to promote and apply. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The present invention will be further described below in conjunction with the accompanying drawings.

[0016] Figure 1 It is a structural schematic diagram of the present invention.

[0017] In the figure: 1 is a rod body, 2 is a connecting plate, 3 is an arc-shaped through hole, 4 is a cylindrical adjustment block, 5 is a fastener, 6 is a pinhole, 7 is a first fixed needle, 8 is a first sliding block, 9 is a second sliding block, 10 is a lead screw, 11 is a screw nut, 12 is a sliding needle holder, 13 is a second fixed needle, 14 is a lower clamping plate, 15 is an upper clamping plate, 16 is a semicircular guide groove, 17 is a bolt, 18 is a connecting screw hole, 19 is a long through hole, and 20 is an L-shaped connecting plate. DETAILED DESCRIPTION

[0018] like Figure 1 As shown, the present invention is a multifunctional adjustable bracket, comprising a rod body 1, a connecting plate 2 is fixedly provided at the end of the rod body 1, an arc-shaped through hole 3 is provided on the connecting plate 2, at least two columnar adjustment blocks 4 are provided in the arc-shaped through hole 3, the columnar adjustment block 4 is convex and is arranged through the arc-shaped through hole 3, the columnar adjustment block 4 can reciprocate along the arc-shaped through hole 3, and can also rotate freely around its own central axis, a fastener 5 is provided at the thinner end of the columnar adjustment block 4, the fastener 5 is used to fix the columnar adjustment block 4 on the connecting plate 2, and a pinhole 6 is provided at the other end of the columnar adjustment block 4, the pinhole 6 is arranged through the columnar adjustment block 4, and the central axis of the pinhole 6 is perpendicular to the central axis of the columnar adjustment block 4, and the pinhole 6 is used to insert a first fixing pin 7;

[0019] The rod body 1 is movably sleeved with a first sliding block 8 and a second sliding block 9, and the first sliding block 8 and the second sliding block 9 can be fixed to the rod body 1 by screws, a lead screw 10 is arranged between the first sliding block 8 and the second sliding block 9, the lead screw 10 is arranged parallel to the rod body 1, one end of the lead screw 10 is movably arranged on the first sliding block 8, the other end of the lead screw 10 is arranged through the second sliding block 9, and a screw nut 11 is arranged at the end extending out of the second sliding block 9, the screw nut 11 is fixedly arranged together with the lead screw 10, and the lead screw 10 is driven to rotate by rotating the screw nut 11;

[0020] A sliding needle holder 12 is correspondingly mounted on the rod body 1 and the lead screw 10 between the first sliding block 8 and the second sliding block 9, and an internal thread is arranged in the hole in which the sliding needle holder 12 and the lead screw 10 are correspondingly mounted, so that the sliding needle holder 12 can reciprocate along the rod body 1 when the lead screw 10 rotates, and a second fixed needle 13 is fixedly arranged on the sliding needle holder 12.

[0021] The sliding needle rack 12 has a convex structure, and the thicker end of the sliding needle rack 12 is mounted on the rod body 1 and the screw 10, and the other end of the sliding needle rack 12 is mounted with a lower clamping plate 14 and an upper clamping plate 15 in sequence, and semicircular guide grooves 16 are provided on the opposite sides of the lower clamping plate 14 and the upper clamping plate 15, and the corresponding semicircular guide grooves 16 on the lower clamping plate 14 and the upper clamping plate 15 cooperate to form a circular clamping hole, and the clamping hole is used to clamp the second fixed needle 13, and the upper clamping plate 15 fixes the second fixed needle 13 to the lower clamping plate 14 through a bolt 17.

[0022] The sliding needle frame 12 is a columnar structure, and gear teeth are provided on the contact surface between the lower clamping plate 14 and the sliding needle frame 12 . The gear teeth are used for self-locking between the lower clamping plate 14 and the sliding needle frame 12 .

[0023] The rod body 1 and the connecting plate 2 are integrally formed, and a scale is provided on the rod body 1 between the first sliding block 8 and the second sliding block 9 , and the scale is used to accurately control the moving position of the sliding needle holder 12 on the lead screw 10 .

[0024] The first fixing needle 7 is fixed by a fastening screw 16 arranged at the end of the cylindrical adjustment block 4 .

[0025] The axial direction of the rod body 1 is perpendicular to the plane where the connecting plate 2 is located.

[0026] The rod body 1 is fixedly arranged in the middle of the connecting plate 2 , and the two arc-shaped through holes 3 are symmetrically arranged on both sides of the rod body 1 .

[0027] An L-shaped connecting plate 20 is provided on the connecting plate 2, and a connecting screw hole 18 is provided on the short plate of the L-shaped connecting plate 20. The connecting screw hole 18 is connected to the arc-shaped through hole 3 of the connecting plate 2 through a fastener 5. A long through hole 19 is provided on the long plate of the L-shaped connecting plate 20, and the long through hole 19 is used to install the columnar adjustment block 4.

[0028] The present invention is a point-to-plane support elastic fixation, which is more stable and reliable, and the needle insertion angle and plane are universally designed. It is easier to operate and fix. Point, line, and surface fixation with reliable bone strength can be selected.

[0029] The present invention adopts a double arc design, which is consistent with the ergonomic principle and further embodies a humanized design.

[0030] The double-needle fixation at the distal end of the present invention can increase the fixation strength and reliability. The needle selection can be changed from 4.0 to 3.0 or 3.5 fixation needles, and the elastic deformation is more flexible. It is easy to heal fractures. The principle of point-to-face elastic fixation; the principle of universal multi-plane; the principle of adjustable positive and negative pressure application (the adjustment range is 30--100mm, and the pressure application can be expanded twice); the principle of convex-to-slot locking stability.

[0031] The invention is suitable for near-articular fractures or pediatric fractures. The device can implant one or two more fixation pins in the longitudinal slot to expand the treatment range, and is suitable for humeral surgical neck fractures, humeral suprailiac fractures, upper tibia fractures and some pediatric near-articular fractures.

[0032] In the present invention, the clamping block at the pressurizing end can arbitrarily apply elastic reverse pressure or positive pressure to the fracture site through the coaxial wire drawing rod.

[0033] The calcaneal clamp of the present invention has a double hole design, the hole diameter is 3.5 or 4.0, and both have a pressurized locking device, which is divided into an inner core and a sliding outer cover. The inner core has a "cross" double hole design, and one hole can be selected for use, which is more fitting and more stable.

[0034] The present invention proposes the theory of "cross needle insertion and parallel micro-motion pressurization".

[0035] ① Design the double-arc main part of the external fixator to continuously maintain multi-angle and multi-plane needle insertion and dynamically maintain the fixation effect;

[0036] ② The design of an adjustable (drawn) screw that first contracts and then expands and pressurizes, with an adjustable length of 30mm-100mm, expands the indication range of the external fixator;

[0037] ③ The design of the anti-rotation clamp can stabilize the bone fixation pins at the distal and proximal ends, thereby limiting the fatigue micro-motion of the fixation pins;

[0038] ④ The external fixation double arc design (where stress is concentrated) adopts an integrated non-separate welding design to effectively prevent breakage during use;

[0039] ⑤ The thickness of the fixing needle should be Φ4mm or Φ3.5mm to produce the elasticity of the fixing needle. The material of the product should have high flexibility and large elastic membrane. The front end of the fixing needle should adopt a one-way thread design to effectively prevent the needle from retreating.

[0040] ⑥The sharp three-edged needle tip design with a special drill protector can quickly enter the bone cortex to prevent soft tissue damage and slippage on the bone surface.

[0041] The present invention aims at the requirements for the angle of needle insertion in the calcaneus: two needles are inserted horizontally at appropriate angles inside and outside the midpoint of the calcaneal tuberosity, one needle is inserted upward at 20° along the long axis of the outer wall of the calcaneus, and the other needle is inserted at 20-30° to the inner wall of the calcaneal tuberosity, so that the two needle bodies and the calcaneus form a "triangle" for stable fixation to prevent the needle from slipping back. A 4mm threaded needle at the proximal end enters the neck from behind the talus, and the needles at the distal and proximal ends are fixed on a bracket and the expansion force is adjusted to achieve the purpose of restoring the shape and angle of the calcaneus.

[0042] The present invention aims at the requirements of needle insertion in the surgical neck of the humerus; two 4mm threaded needles at the proximal end cross the fracture line and enter without breaking the joint surface, the two needles are at a 30-45° needle body and 3-10° with the longitudinal axis of the humeral shaft, and the L-shaped connector and the needle clamp seat at the distal end form a triangular plane for fixation, and then the screw can be adjusted as needed to generate stress.

[0043] The present invention aims at the needle insertion requirements of the humeral condyle; two threaded needles with a diameter of 3.5 mm are inserted and fixed at the center of the double arc bracket, a threaded needle with a diameter of 4 mm is fixed at the near folded end with an L-shaped connector, and finally a threaded needle with a diameter of 4 mm is fixed at the middle part of the humerus to adjust the fixing plane and apply pressure.

[0044] The present invention utilizes a minimally invasive external fixator to elastically treat calcaneal, humeral surgical neck, and humeral intercondylar fractures, thereby reducing the patient's non-incision trauma, bleeding, and other risks, reducing the incidence of deformities and venous thrombosis, and improving the fracture healing rate, allowing the patient to get out of bed earlier. The present invention is simple to operate, and particularly in the calcaneal region, allows for early emergency surgery or initial perioperative treatment, and avoids soft tissue damage and skin necrosis caused by surgical incision, internal fixation placement, breakage of fixators, and reoperation, and is easy to promote and apply.

[0045] The fixation of the distal universal clamp of the present invention is not only convenient for medical personnel to operate, but also can greatly shorten the operation time and fracture healing time, reduce the patient's trauma, bleeding and other risks, and enable the patient to get out of bed and do non-weight-carrying activities earlier; the pressurized screw rod at the pressurized end can generate an upward and outward elastic prying force for the double-arc bracket fixing needle, and the proximal end can use a connector to add a needle according to the fixation needs to improve the patient's elastic fixation rate and fracture healing rate; in addition, this fixation method can be performed under local anesthesia, reducing the risk of general anesthesia or epidural anesthesia, which is good news for elderly patients with fractures and those with multiple underlying diseases.

[0046] The embodiments of the present invention are described in detail above in conjunction with the accompanying drawings, but the present invention is not limited to the above embodiments, and various changes can be made within the knowledge scope of ordinary technicians in this field without departing from the purpose of the present invention.

Claims

1. A multifunctional adjustable bracket, characterized in that: The invention comprises a rod body (1), a connecting plate (2) being fixedly provided at the end of the rod body (1), an arc-shaped through hole (3) being provided on the connecting plate (2), at least two columnar adjustment blocks (4) being provided in the arc-shaped through hole (3), the columnar adjustment block (4) being convex and penetrating the arc-shaped through hole (3), the columnar adjustment block (4) being able to slide back and forth along the arc-shaped through hole (3) and also being able to rotate freely around its own central axis, a fastener (5) being provided at a thinner end of the columnar adjustment block (4), the fastener (5) being used to fix the columnar adjustment block (4) on the connecting plate (2), a pinhole (6) being provided at the other end of the columnar adjustment block (4), the pinhole (6) penetrating the columnar adjustment block (4), the central axis of the pinhole (6) being perpendicular to the central axis of the columnar adjustment block (4), the pinhole (6) being used to insert a first fixing pin (7); The rod body (1) is movably provided with a first sliding block (8) and a second sliding block (9), and the first sliding block (8) and the second sliding block (9) can be fixed to the rod body (1) by screws, a lead screw (10) is arranged between the first sliding block (8) and the second sliding block (9), the lead screw (10) is arranged parallel to the rod body (1), one end of the lead screw (10) is movably arranged on the first sliding block (8), the other end of the lead screw (10) is arranged through the second sliding block (9), and a screw nut (11) is arranged at the end extending out of the second sliding block (9), the screw nut (11) is fixedly arranged together with the lead screw (10), and the lead screw (10) is driven to rotate by rotating the screw nut (11); A sliding needle holder (12) is correspondingly mounted on the rod body (1) and the lead screw (10) between the first sliding block (8) and the second sliding block (9), and internal threads are arranged in the holes in which the sliding needle holder (12) and the lead screw (10) are correspondingly mounted, so that the sliding needle holder (12) can reciprocate along the rod body (1) when the lead screw (10) rotates, and a second fixed needle (13) is fixedly arranged on the sliding needle holder (12); The sliding needle frame (12) is of a convex structure, and the thicker end of the sliding needle frame (12) is mounted on the rod body (1) and the lead screw (10), and the other end of the sliding needle frame (12) is mounted with a lower clamping plate (14) and an upper clamping plate (15) in sequence, and the lower clamping plate (14) and the upper clamping plate (15) are provided with semicircular guide grooves (16) on the opposite sides, and the corresponding semicircular guide grooves (16) on the lower clamping plate (14) and the upper clamping plate (15) cooperate to form a circular clamping hole, and the clamping hole is used to clamp the second fixed needle (13), and the upper clamping plate (15) fixes the second fixed needle (13) to the lower clamping plate (14) by a bolt (17); The rod body (1) and the connecting plate (2) are integrally formed, and a scale is provided on the rod body (1) between the first sliding block (8) and the second sliding block (9), and the scale is used to accurately control the moving position of the sliding needle holder (12) on the lead screw (10).

2. A multifunctional adjustable bracket according to claim 1, characterized in that: The sliding needle frame (12) is of a columnar structure, and gear teeth are provided on the contact surface between the lower clamping plate (14) and the sliding needle frame (12), and the gear teeth are used for self-locking between the lower clamping plate (14) and the sliding needle frame (12).

3. The multifunctional adjustable bracket according to claim 1, characterized in that: The first fixing needle (7) is fixed by a fixing screw arranged at the end of the cylindrical adjustment block (4).

4. The multifunctional adjustable bracket according to claim 1, characterized in that: The axial direction of the rod body (1) is perpendicular to the plane where the connecting plate (2) is located.

5. The multifunctional adjustable bracket according to claim 1, characterized in that: The rod body (1) is fixedly arranged in the middle of the connecting plate (2), and the two arc-shaped through holes (3) are symmetrically arranged on both sides of the rod body (1).

6. The multifunctional adjustable bracket according to claim 1, characterized in that: An L-shaped connecting plate (20) is provided on the connecting plate (2), a connecting screw hole (18) is provided on the short plate of the L-shaped connecting plate (20), the connecting screw hole (18) is connected to the arc-shaped through hole (3) of the connecting plate (2) via a fastener (5), and a long through hole (19) is provided on the long plate of the L-shaped connecting plate (20), the long through hole (19) being used for mounting a columnar adjustment block (4).

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