CN209864007U - A multifunctional adjustable bracket - Google Patents

Abstract

The utility model discloses a multifunctional adjustable bracket, which maintains the tension principle of an outer bracket according to the adjustable length of the bracket, solves the inflexible problem of the prior external fixing bracket, solves the problem of elastic pressurization, improves the fracture healing rate and reduces complications caused by long time lying in bed; the technical scheme is as follows: the end part of the rod body is fixedly provided with a connecting plate, an arc-shaped through hole is formed in the connecting plate, at least two cylindrical adjusting blocks are arranged in the arc-shaped through hole, the cylindrical adjusting blocks are in a convex shape and penetrate through the arc-shaped through hole, the cylindrical adjusting blocks can slide back and forth along the arc-shaped through hole and can also freely rotate around the central axis of the cylindrical adjusting blocks, a fastener is arranged at the thinner end of each cylindrical adjusting block, a needle hole is formed in the other end of each cylindrical adjusting block, the needle holes penetrate through the cylindrical adjusting blocks and are used for; the sliding needle frame is of a convex structure, the other end of the sliding needle frame is sequentially sleeved with a lower clamping plate and an upper clamping plate, and the upper clamping plate fixes the second fixing needle on the lower clamping plate through a bolt.

Description

A multifunctional adjustable bracket

technical field

The utility model relates to a multifunctional adjustable bracket, which belongs to the technical field of medical instruments.

Background technique

At present, open surgery is used for patients with fractures of the calcaneus, surgical neck of humerus, and intercondyle of humerus, which are prone to bleeding, trauma, and organ interference. Patients with fractures of the calcaneus, surgical neck of humerus, and intercondyle of humerus In the past, after internal fixation for elderly osteoporosis and young adults with high-energy injuries, there was only rigid fixation, but no elastic compression effect, resulting in a low fracture healing rate, prolonging the bed rest time, and even causing complications.

Utility model content

The utility model overcomes the deficiencies in the prior art, and provides a multifunctional adjustable bracket. According to the adjustable length of the bracket to maintain the tension principle of the outer frame, it solves the inflexibility of the external fixed bracket in the past, and solves the problem of elasticity. Compression issues, improved fracture union rates and reduced complications from prolonged bed rest.

In order to solve the above technical problems, the technical solution adopted by the utility model is: a multi-functional adjustable bracket, including a rod body, the end of the rod body is fixedly provided with a connecting plate, and the connecting plate is provided with an arc-shaped through hole, At least two cylindrical adjustment blocks are arranged in the arc-shaped through hole. The cylindrical adjustment blocks are convex and arranged through the arc-shaped through hole. The cylindrical adjustment blocks can slide back and forth along the arc-shaped through hole, and also It can freely rotate around its own central axis, and the thinner end of the cylindrical adjustment block is provided with a fastener, which is used to fix the cylindrical adjustment block on the connecting plate, and the other end of the cylindrical adjustment block One end is provided with a pinhole, the pinhole is set through the cylindrical adjustment block, and the central axis of the pinhole is perpendicular to the central axis of the cylindrical adjustment block, and the pinhole is used for inserting the first fixed pin;

The first sliding block and the second sliding block are movable sleeves on the rod body, and the first sliding block and the second sliding block can be fixed on the rod body by screws, between the first sliding block and the second sliding block A lead screw is provided, and the lead screw is arranged in parallel with the rod body. One end of the lead screw is movably arranged on the first sliding block, and the other end of the lead screw is arranged through the second sliding block. The end of the block is provided with a screw nut, and the screw nut is fixedly arranged with the screw, and the screw is driven to rotate by rotating the screw nut;

The rod body between the first sliding block and the second sliding block and the lead screw are correspondingly fitted with a sliding needle holder, and internal threads are provided in the corresponding holes of the sliding needle holder and the lead screw, so that the sliding needle The frame can reciprocate along the rod body when the lead screw rotates, and the second fixed needle is fixedly arranged on the sliding needle frame.

The sliding needle holder has a convex structure, and the thicker end of the sliding needle holder is set on the rod body and the lead screw, and the other end of the sliding needle holder is sequentially set with a lower splint and an upper splint, and the lower splint and the upper splint are sequentially set. Semicircular guide grooves are provided on the opposite sides of the upper splint, and the corresponding semicircular guide grooves on the lower splint and the upper splint cooperate to form a circular clamping hole, which is used to fix the second Needle clamping, the upper splint fixes the second fixing pin on the lower splint by bolts.

The sliding needle holder has a columnar structure, and gear teeth are provided on the contact surface between the lower splint and the sliding needle holder, and the gear teeth are used for self-locking between the lower splint and the sliding needle holder.

The rod body and the connecting plate are integrally formed, and a scale is provided 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.

The first fixing pin is fixed by a fastening screw arranged at the end of the cylindrical adjustment block.

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

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.

When it is necessary to increase the number of fixed pins, an additional L-shaped connecting plate can be connected. The L-shaped connecting plate is provided with a connecting screw hole on the short plate of the L-shaped connecting plate. The hole is connected to the arc-shaped through hole of the connecting plate through a fastener, and a long through hole is arranged on the long plate of the L-shaped connecting plate, and the long through hole is used for installing a cylindrical adjustment block.

Compared with the prior art, the utility model has the beneficial effects that: the utility model utilizes the minimally invasive external fixation bracket to elastically treat fractures of the calcaneus, the surgical neck of the humerus, and the intercondylar humerus, reducing the patient's non-incision trauma, bleeding and other risks, Reduce the incidence of deformity and venous thrombosis, improve the fracture healing rate, enable patients to get out of bed early, and the operation is simple, especially in the calcaneus, early emergency surgery or preliminary perioperative treatment can be performed, and soft tissue caused by surgical incision can be avoided Injury and skin necrosis, internal fixation, breakage of fixation and reoperation are easy to popularize and apply.

Description of drawings

Below in conjunction with accompanying drawing, the utility model is described further.

Fig. 1 is the structural representation of the utility model.

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

Detailed ways

As shown in Figure 1, a multifunctional adjustable bracket of the utility model includes a rod body 1, the end of the rod body 1 is fixedly provided with a connecting plate 2, and the connecting plate 2 is provided with an arc-shaped through hole 3, so that At least two cylindrical adjustment blocks 4 are arranged in the arc-shaped through hole 3. The cylindrical adjustment block 4 is convex and arranged through the arc-shaped through hole 3. The cylindrical adjustment block 4 can be arranged along the arc-shaped through hole. 3 reciprocating sliding, and can also freely rotate around its own central axis, the thinner end of the cylindrical adjustment block 4 is provided with a fastener 5, and the fastener 5 is used to fix the cylindrical adjustment block 4 on the connecting plate 2 Above, the other end of the cylindrical adjustment block 4 is provided with a pinhole 6, the pinhole 6 is set through the cylindrical adjustment block 4, and the central axis of the pinhole 6 is perpendicular to the central axis of the cylindrical adjustment block 4 , the pinhole 6 is used to insert the first fixing pin 7;

The first sliding block 8 and the second sliding block 9 are movably sleeved on the rod body 1, and the first sliding block 8 and the second sliding block 9 can be fixed on the rod body 1 by screws, and the first sliding block 8 A lead screw 10 is arranged between the second slide 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 slide block 8, and the other end of the lead screw 10 It is arranged through the second sliding block 9, and a screw nut 11 is provided at the end extending out of the second sliding block 9. The screw nut 11 is fixedly arranged with the lead screw 10, and the screw nut 11 is driven by rotating the screw nut 11. The lever 10 rotates;

The rod body 1 between the first sliding block 8 and the second sliding block 9 and the lead screw 10 are correspondingly fitted with a sliding needle frame 12 , and the hole corresponding to the sliding needle frame 12 and the lead screw 10 is provided with an inner thread, so that the sliding needle holder 12 can reciprocate along the rod body 1 when the lead screw 10 rotates, and the second fixed needle 13 is fixedly arranged on the sliding needle holder 12 .

The sliding needle frame 12 has a convex structure, and the thicker end of the sliding needle frame 12 is fitted on the rod body 1 and the lead screw 10, and the other end of the sliding needle frame 12 is sequentially fitted with a lower splint 14 and an upper splint 15, 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 The clamping hole is used for clamping the second fixing pin 13, and the upper clamping plate 15 fixes the second fixing pin 13 on the lower clamping plate 14 through bolts 17.

The sliding needle frame 12 has a columnar structure, and gear teeth are arranged 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 .

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 position of the sliding needle frame 12 on the lead screw 10. moving position.

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

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

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 .

The connecting plate 2 is provided with an L-shaped connecting plate 20, and the short plate of the L-shaped connecting plate 20 is provided with a connecting screw hole 18, and the connecting screw hole 18 is connected to the arc of the connecting plate 2 by a fastener 5. On the long plate of the L-shaped connecting plate 20, a long through hole 19 is arranged on the long through hole 3, and the long through hole 19 is used for installing the cylindrical adjustment block 4.

The utility model adopts point-to-face supporting elastic fixation, which is more stable and reliable, and the needle insertion angle and plane are universally designed. Easier to operate and fix. You can choose point, line and surface fixation with reliable bone strength.

The utility model adopts a double-arc design, which conforms to the principles of ergonomics, and further embodies the humanized design.

The utility model can increase the fixing strength and reliability by fixing the distal double needles, the selection of the needles can be changed from 4.0 to 3.0 or 3.5, and the elastic deformation is more flexible. The principle of elastic fixation on the opposite side of the fracture healing point is easy; the principle of universal multi-plane; the principle of positive and negative pressure can be adjusted (the adjustment range is 30--100mm, and the pressure can be expanded twice); the principle of stuck and stable convex to groove.

The utility model is suitable for fractures near joints or children's fractures. This device can implant one or two more fixation pins in the longitudinal chute to expand the range of treatment. It is suitable for fractures of the surgical neck of the humerus, suprailiac humerus fractures, fractures of the upper part of the tibia and some juvenile proximal joint fractures.

In the utility model, the clamping block at the pressurized end can elastically reverse or positively pressurize the fracture site through the coaxial wire drawing rod.

In the utility model, the double-hole design of the calcaneus clamping block is designed with a hole diameter of 3.5 or 4.0, and there is a pressurized locking device, which is divided into an inner core and a sliding outer cover. Adhesive, more stable.

The utility model puts forward the theory of "cross needle insertion and parallel micro-motion pressurization".

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;

②Adjustable (drawing) adjustable (drawing) adjustable screw rod that first shrinks and then expands and pressurizes, with an adjustable length of 30mm-100mm, which increases the range of indications for external fixators;

③The design of the anti-rotation clamp block can stabilize the bone fixation pin at the distal and proximal ends, thereby limiting the fatigue micro-movement of the fixation pin;

④ The double-arc design of the external fixation (where the stress is concentrated) adopts an integrated non-welding design, which effectively prevents breakage during use;

⑤ The thickness of the fixing needle is Φ4mm or Φ3.5mm to produce the elasticity of the fixing needle. The material of the product has high requirements for flexibility and a large amount of elastic film, and the front end of the fixing wire adopts a one-way thread design, which can effectively prevent the needle from returning ;

⑥The sharp triangular design of the needle point and the special guard drill can quickly enter the bone cortex to prevent soft tissue damage and bone surface slippage.

The utility model is aimed at the angle requirements of the calcaneal needle insertion: two needles are inserted at a suitable angle on the inside and outside of the midpoint of the calcaneal tubercle, one needle enters along the long axis of the lateral wall of the calcaneus at an angle of 20° upward, and the other needle is aligned with the calcaneal tubercle. Insert the needle at 20-30° on the medial wall to form a "triangular" stable fixation between the two needle bodies and the calcaneus to prevent the needle from slipping back. A 4mm threaded needle at the proximal end enters the neck from the back of the talus, and fixes the needles at the far and near ends to the bracket Up and adjust the expansion force to restore the shape and angle of the calcaneus.

The utility model is aimed at the requirement 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 into the articular surface. , the L-shaped connector at the far-bending end and the pin seat form a triangular plane and fix it, and then the screw can be adjusted according to needs to generate stress.

The utility model is aimed at the requirement of needle insertion in the condyle of the humerus; two threaded needles with a diameter of 3.5mm are inserted and fixed in the center of the double-arc bracket, and a threaded needle with a diameter of 4mm is fixed at the proximal folded end with an L-shaped connector, and finally fixed at the middle of the humerus A threaded needle with a diameter of 4mm adjusts the fixed plane and pressurizes it.

The utility model uses the minimally invasive external fixation bracket to elastically treat fractures of the calcaneus, surgical neck of the humerus, and intercondyle of the humerus, reduces the patient's non-incision trauma, bleeding and other risks, reduces the incidence of deformity and venous thrombosis, and improves the fracture healing rate. The patient gets out of bed early, and the operation is simple. Especially for the calcaneus, early emergency surgery or preliminary perioperative treatment can be performed, and soft tissue damage and skin necrosis caused by surgical incision, internal fixation and fixation breakage can be avoided. Re-operation, easy to popularize and apply.

The fixing of the universal clamping block at the far end of the utility model 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 make the patient get out of bed early and do non-weight-bearing activities ; The pressurized screw rod at the pressurized end can produce the upward and outward elastic prying force of the double-arc bracket fixing pins, and the proximal end can use the connector to add pins according to the fixation needs to improve the patient's elastic fixation rate and fracture healing rate; in addition, This fixation method can be operated under local anesthesia, reducing the risk of general anesthesia or epidural anesthesia, which is good news for elderly fracture patients with many underlying diseases.

The above embodiments of the utility model have been described in detail in conjunction with the accompanying drawings, but the utility model is not limited to the above-mentioned embodiments. Make various changes below.

Claims (8)

1. The multifunctional adjustable support is characterized by comprising a rod body (1), wherein a connecting plate (2) is fixedly arranged at the end part of the rod body (1), an arc-shaped through hole (3) is formed in the connecting plate (2), at least two cylindrical adjusting blocks (4) are arranged in the arc-shaped through hole (3), the cylindrical adjusting blocks (4) are convex and penetrate through the arc-shaped through hole (3), the cylindrical adjusting blocks (4) can slide back and forth along the arc-shaped through hole (3) and can freely rotate around the central axis of the cylindrical adjusting blocks (4), a fastening piece (5) is arranged at the thinner end of each cylindrical adjusting block (4), the fastening piece (5) is used for fixing the cylindrical adjusting blocks (4) on the connecting plate (2), needle holes (6) are formed in the other end of each cylindrical adjusting block (4), and the needle holes (6) penetrate through the cylindrical adjusting blocks (4), the central axis of the needle hole (6) is vertical to the central axis of the cylindrical adjusting block (4), and the needle hole (6) is used for inserting a first fixing needle (7);

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

the sliding needle rack is characterized in that a sliding needle rack (12) is correspondingly sleeved on the rod body (1) and the lead screw (10) between the first sliding block (8) and the second sliding block (9), an internal thread is arranged in a hole of the sliding needle rack (12) corresponding to the lead screw (10) in a sleeved mode, so that the sliding needle rack (12) can move back and forth along the rod body (1) when the lead screw (10) rotates, and a second fixing needle (13) is fixedly arranged on the sliding needle rack (12).

2. The multifunctional adjustable support according to claim 1, characterized in that the sliding needle frame (12) is of a convex structure, the thick end of the sliding needle frame (12) is sleeved on the rod body (1) and the screw (10), the other end of the sliding needle frame (12) is sequentially sleeved with a lower clamping plate (14) and an upper clamping plate (15), the opposite side surfaces of the lower clamping plate (14) and the upper clamping plate (15) are respectively provided with a semicircular guide groove (16), the corresponding semicircular guide grooves (16) on the lower clamping plate (14) and the upper clamping plate (15) are matched to form a circular clamping hole, the clamping hole is used for clamping the second fixing needle (13), and the upper clamping plate (15) fixes the second fixing needle (13) on the lower clamping plate (14) through a bolt (17).

3. The multifunctional adjustable support according to claim 2, characterized in that the sliding needle holder (12) is of a cylindrical structure, and the contact surface between the lower clamping plate (14) and the sliding needle holder (12) is provided with gear teeth for self-locking between the lower clamping plate (14) and the sliding needle holder (12).

4. A multifunctional adjustable support according to claim 1, characterized in that the rod (1) and the connecting plate (2) are formed integrally, and the rod (1) between the first sliding block (8) and the second sliding block (9) is provided with a scale for precisely controlling the moving position of the sliding needle holder (12) on the screw (10).

5. A multifunctional adjustable support according to claim 1, characterized in that said first fixing pin (7) is fixed by means of a fastening screw provided at the end of the cylindrical adjustment block (4).

6. A multifunctional adjustable support according to claim 1, characterized in that the axial direction of the rod (1) is perpendicular to the plane of the connection plate (2).

7. 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 two sides of the rod body (1).

8. The multifunctional adjustable bracket according to claim 1, characterized in that an L-shaped connecting plate (20) is arranged on the connecting plate (2), a connecting screw hole (18) is arranged on a 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 arranged on a long plate of the L-shaped connecting plate (20), and the long through hole (19) is used for installing the cylindrical adjusting block (4).