Movable severe spinal malformation traction device

Abstract

The movable severe spinal malformation traction device comprises a head ring, two universal rotating mechanisms, a pelvis fixing ring and a plurality of telescopic supporting rods, the two universal rotating mechanisms are connected to the left end and the right end of the head ring respectively, and the pelvis fixing ring is adjustable in surrounding size and located below the head ring; and the upper end of the telescopic supporting rod is connected with the universal rotating mechanism. The two ends of the head ring are connected with the telescopic supporting rods through the universal rotating mechanisms, so that the head ring can rotate in multiple directions relative to the telescopic supporting rods, the flexibility of the head of a patient is improved, neck stiffness is avoided, the comfort is improved, and different use scenes are adapted.

Description

Technical Field

[0001] The invention relates to the field of medical instruments, and in particular to a movable severe spinal deformity traction device. Background Art

[0002] Adolescent idiopathic scoliosis (AIS) is one of the most common scoliotic deformities that occur during adolescent growth and development. Among the risk group aged 1 to 16, the incidence of AIS is 1% to 3%, accounting for about 74.7% of all scoliosis patients. AIS causes scoliosis, twisting, and chest deformation in patients, affecting their cardiopulmonary function and body shape, reducing their quality of life, and seriously endangering the physical and mental health of adolescents. Therefore, the treatment of AIS has become an extremely important part of orthopedic spine surgery.

[0003] In the 1960s, traction devices such as head slings and pelvic slings appeared. Later, traction devices that used body weight as traction and achieved traction with external tools such as beds and wheelchairs also appeared. Head-pelvic ring traction happens to be one of the effective surgical methods for slowing down the increase of curvature before surgery. Early head-pelvic ring traction is very important for corrective surgery for severe scoliosis. Traction can change the flexibility of the severely deformed spine.

[0004] Scoliosis patients need long-term cervical traction. Existing traction devices have the following disadvantages and shortcomings:

[0005] 1. The general adaptability is poor, and the active holes are small after assembly;

[0006] 2. The head cannot be moved after being fixed, which can easily cause neck stiffness;

[0007] 3. Unable to lie flat, the device takes up a lot of space behind the neck;

[0008] 4. Towing requires disassembling components, which is inconvenient to operate.

[0009] 5. Traction requires lying in the hospital for a long time, which takes three months or even a year. It is a long period and requires long-term care from medical staff and family members. Long-term traction will cause stiffness in the neck and spine. Postoperative complications of the cervical spine such as pain and stiffness often occur, and due to the continued stiffness, cervical dislocation may occur.

[0010] 6. The anesthesia cannula is a nasal cannula. The traditional non-adjustable head frame needs to be removed to facilitate intubation by tilting the neck back. Summary of the invention

[0011] In view of the deficiencies of the prior art, the present invention provides a movable severe spinal deformity traction device, which mainly solves the problem that the patient's head cannot be moved, which easily causes neck stiffness.

[0012] To achieve the above object, the present invention is achieved through the following technical solutions:

[0013] A movable severe spinal deformity traction device, comprising:

[0014] Headband;

[0015] Two universal rotating mechanisms are connected to the left and right ends of the head ring respectively;

[0016] A pelvic fixation ring with an adjustable circumference located below the head ring;

[0017] A plurality of telescopic support rods, the lower ends of which are connected to the pelvic fixing ring, and the upper ends of which are connected to the universal rotating mechanism to support the head ring.

[0018] Furthermore, the universal rotation mechanism includes a ball head rod and a rocker rod, one end of the ball head rod is connected to the head ring, the ball head end of the ball head rod and the rocker rod are configured to form a universal ball joint structure, and the upper end of the telescopic support rod is connected to the rocker rod.

[0019] Furthermore, the universal rotation mechanism also includes a bearing, a bearing seat and a fastening cover. The ball head end of the ball head rod is placed in a spherical hole formed by the combination of the bearing seat and the fastening cover. A mounting hole is provided in the middle of the rocker arm. The bearing seat is installed in the mounting hole. The bearing sleeve is arranged on the bearing seat and forms a hole-axis match with the mounting hole.

[0020] Furthermore, the upper end of the telescopic support rod is connected to the swing rod through a first connecting piece, the first connecting piece and the swing rod are both provided with an adjustment slot, the first connecting piece and the swing rod are fixed by bolts and nuts, the bolts pass through the adjustment slots on the first connecting piece and the adjustment slots on the swing rod and are locked with the nuts;

[0021] The upper end of the telescopic support rod is provided with an external thread and is sleeved with two nuts. The upper end of the telescopic support rod passes through the adjustment slot on the first connecting piece, and the telescopic support rod and the first connecting piece are locked by nuts distributed on the upper and lower sides of the first connecting piece.

[0022] Furthermore, the lower end of the telescopic support rod is connected to the pelvic fixing ring through a second connecting piece. The lower end of the telescopic support rod is provided with an external thread and is sleeved with two nuts. The second connecting piece is provided with an adjustment groove. The lower end of the telescopic support rod passes through the adjustment groove on the second connecting piece. The telescopic support rod and the second connecting piece are locked by nuts distributed on the upper and lower sides of the second connecting piece.

[0023] Furthermore, the universal rotation mechanism includes a clamping assembly, which includes a seat body and a movable clamping jaw, the seat body is connected to the ball head rod, the seat body includes an upper clamping arm and a lower clamping arm, the movable clamping jaw is located between the upper clamping arm and the lower clamping arm, the bottom surface of the movable clamping jaw and the top surface of the lower clamping arm are both provided with grooves matching the head ring, the distance between the movable clamping jaw and the lower clamping arm is adjustable, and the movable clamping jaw and the lower clamping arm cooperate to clamp the head ring.

[0024] Furthermore, the rear end of the head ring is provided with an upwardly convex arc-shaped making way section for the patient to lie flat.

[0025] Furthermore, the telescopic support rod includes an inner rod, an outer tube and a screw sleeve. The screw sleeve is rotatably fixed to one end of the outer tube and is provided with a threaded hole. The outer tube and the screw sleeve are both sleeved on the inner rod. The surface of the inner rod is provided with threads. The screw sleeve is connected to the inner rod through threaded cooperation. When the screw sleeve rotates, the inner rod is driven to move axially along the outer tube.

[0026] Furthermore, the outer tube is provided with a visible groove along the axial direction and is provided with scales.

[0027] Furthermore, the pelvic fixing ring includes two U-shaped sections, each of which is provided with a plurality of screw mounting holes. The two U-shaped sections are connected by passing screws through the screw mounting holes on the two U-shaped sections. The circumference of the pelvic fixing ring can be adjusted by installing screws in different screw mounting holes.

[0028] The present invention has the following beneficial effects:

[0029] 1. The two ends of the headband are connected to the telescopic support rod through a universal rotation mechanism, so that the headband can rotate in multiple directions relative to the telescopic support rod, increasing the flexibility of the patient's head, avoiding neck stiffness, improving comfort, and adapting to different usage scenarios. When performing anesthesia intubation (nasal intubation), the neck can be adjusted without disassembly, which is convenient for intubation.

[0030] 2. Adding bearings between the ball head rod and the swing arm makes the ball head rod rotate more smoothly and swing more flexibly, making it easier for patients to adjust the head position during use.

[0031] 3. The head ring and pelvic fixation ring are covered with screw mounting holes, which increase the optional fixing positions during the use of the product and increase the adjustable positions of the product. By adjusting the screw position, the size of the pelvic fixation ring can be set, and multiple specifications can be adjusted to better match the pelvic fixation of different people.

[0032] 4. The telescopic support rod adopts a combination of a screw sleeve and a scale to increase the accuracy of size adjustment and the convenience of use and adjustment.

[0033] 5. The head frame of the traction device provided by the present invention has the advantage of being movable, which greatly reduces spinal stiffness and complications caused by long-term continuous traction, and increases the safety of spinal traction.

[0034] 6. The improved traction device can be adjusted at home by the patient, without the need for long-term hospitalization, which is more humane. In addition, the hospitalization time is reduced, which can greatly reduce the related hospitalization and nursing expenses.

[0035] 7. Through the adjustment slots on the first connecting member and the second connecting member, the position of the telescopic support rod relative to the human spine can be flexibly adjusted. The traction device provided by the present invention retains the flexibility of the spine during surgery. Before and after the operation, the speed of overall muscle recovery can be faster and better. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] Figure 1 It is a schematic structural diagram of a movable severe spinal deformity traction device according to an embodiment of the present invention;

[0037] Figure 2 It is a schematic diagram of the assembly of the universal rotating mechanism, the head ring and the telescopic support rod;

[0038] Figure 3 is a schematic diagram of the connection between the telescopic support rod and the pelvic fixing ring;

[0039] Figure 4 It is a top view of the local structure of the universal rotation mechanism;

[0040] Figure 5 is along Figure 4 Sectional view along line AA;

[0041] Figure 6 It is a schematic diagram of the structure of the pelvic fixation ring;

[0042] Figure 7 It is an exploded view of the pelvic fixation ring;

[0043] Figure 8 It is a partial structural diagram of the telescopic support rod;

[0044] Fig. 9 is along Figure 8 Sectional view along the midline BB;

[0045] Fig.10 This is the assembly drawing of the clamping assembly and the head ring. DETAILED DESCRIPTION

[0046] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0047] In the description of the present invention, it is necessary to understand that the terms "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship are based on the orientation or position relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0048] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection, an electrical connection, or mutual communication; it can be a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0049] like Figures 1 to 10 As shown, a movable traction device for severe spinal deformity includes a head ring 1, two universal rotating mechanisms 2, a pelvic fixing ring 3, and a plurality of telescopic support rods 4. The two universal rotating mechanisms 2 are respectively connected to the left and right ends of the head ring 1. The pelvic fixing ring 3, whose circumference is adjustable, is located below the head ring 1. A plurality of telescopic support rods 4, whose lower ends are connected to the pelvic fixing ring 3, and whose upper ends are connected to the universal rotating mechanism 2 to support the head ring 1. The two ends of the head ring are connected to the telescopic support rods through the universal rotating mechanism, so that the head ring can rotate in multiple directions relative to the telescopic support rods, thereby increasing the flexibility of the patient's head, avoiding neck stiffness, improving comfort, and adapting to different usage scenarios. When performing anesthesia intubation (nasal intubation), the traditional traction device with an immovable head that cannot be adjusted needs to be disassembled to facilitate the patient to tilt his neck back for intubation. The traction device provided in this embodiment does not need to be disassembled, and can meet the movable adjustment of the neck, making intubation convenient.

[0050] The rear end of the head ring 1 is provided with an upwardly convex arc-shaped clearance section 5 to make way for the patient when lying flat. The pelvic fixing ring 3 includes two U-shaped sections 6, and the U-shaped sections 6 are provided with a plurality of screw mounting holes 7. The two U-shaped sections 6 are connected by passing screws through the screw mounting holes 7 on the two U-shaped sections 6. The circumference of the pelvic fixing ring 3 can be adjusted by installing the screws in different screw mounting holes 7, so as to achieve multi-specification adjustment and better match the pelvic fixation of different groups of people. Both the head ring 1 and the pelvic fixing ring 3 are provided with a plurality of screw mounting holes 7, which increase the optional fixing positions of bone screws or bone needles and increase the adjustable positions of the product.

[0051] The universal rotation mechanism 2 includes a ball head rod 21 and a swing rod 22. One end of the ball head rod 21 is connected to the head ring 1. The ball head end 211 of the ball head rod 21 and the swing rod 22 are configured to form a universal ball joint structure. The upper end of the telescopic support rod 4 is connected to the swing rod 22. Specifically, the universal rotation mechanism 2 includes a ball head rod 21, a swing rod 22, a bearing 23, a bearing seat 24, an end cover 25 and a fastening cover 26. The bearing seat 24 and the fastening cover 26 are provided with matching spherical holes. The bearing seat 24 is provided with an external thread. The fastening cover 26 is connected to the bearing seat 24 by threads. The ball head end 211 of the ball head rod 21 is placed in the spherical hole formed by the combination of the bearing seat 24 and the fastening cover 26. The other end of the ball head rod 21 passes through the fastening cover 26 and is fixed relative to the head ring 1. A mounting hole is provided in the middle of the swing rod 22, and the mounting hole is a stepped hole. The bearing seat 24 is located in the stepped hole. The bearing 23 is sleeved on the bearing seat 24 and forms a hole-shaft match with the stepped hole. The end cover 25 abuts against the end surface of the bearing 23. The bearing seat 24, the stepped hole and the end cover 25 cooperate to fix the bearing 23. The bearing 23 is added between the ball head rod 21 and the swing rod 22, so that the ball head rod 21 rotates more smoothly and swings more flexibly, which is convenient for patients to adjust the head position during use.

[0052] The end of the ball head rod 21 close to the head ring 1 can be fixedly connected to the head ring 1 by welding, integral molding, etc. Fig.10 The universal rotation mechanism 2 also includes a clamping assembly, which includes a seat body 28, a movable clamping claw 29 and an adjusting screw 27. The seat body 28 is fixedly connected to the ball head rod 21 (for example, by welding or screw connection). The seat body 28 includes an upper clamping arm 281 and a lower clamping arm 282. The movable clamping claw 29 is located between the upper clamping arm 281 and the lower clamping arm 282. The bottom surface of the movable clamping claw 29 and the top surface of the lower clamping arm 282 are both provided with grooves matching the head ring 1. The upper clamping arm 281 is provided with a threaded hole. The adjusting screw 27 is screwed into the threaded hole of the upper clamping arm 281 and the lower end abuts against the top surface of the movable clamping claw 29, so that the movable clamping claw 29 and the lower clamping arm 282 clamp the head ring 1. In this way, the clamping assembly forms a detachable connection with the head ring 1. According to the size of the patient's head circumference, the position of the universal rotation mechanism 2 relative to the head ring 1 can be fine-tuned. The head ring 1 is stuck in the groove, making the structure more stable and the head ring 1 not easy to shake.

[0053] The upper end of the telescopic support rod 4 is connected to the rocker arm 22 via the first connecting member 8. Both the first connecting member 8 and the rocker arm 22 are provided with an adjustment slot 9. The first connecting member 8 and the rocker arm 22 are fixed by bolts and nuts 10. The bolts pass through the adjustment slots 9 on the first connecting member 8 and the adjustment slots 9 on the rocker arm 22 and are locked with the nuts 10.

[0054] Similarly, if Figure 2The upper end of the telescopic support rod 4 is provided with an external thread and is covered with two nuts 10. The upper end of the telescopic support rod 4 passes through the adjustment slot 9 on the first connecting member 8. The telescopic support rod 4 and the first connecting member 8 are locked by the nuts 10 distributed on the upper and lower sides of the first connecting member 8. Figure 3 The lower end of the telescopic support rod is connected to the pelvic fixing ring 3 through the second connecting piece 11. The lower end of the telescopic support rod 4 is provided with an external thread and is covered with two nuts 10. The second connecting piece 11 is provided with an adjustment slot 9. The lower end of the telescopic support rod 4 passes through the adjustment slot 9 on the second connecting piece 11. The locking of the telescopic support rod 4 and the second connecting piece 11 is achieved by nuts 10 distributed on the upper and lower sides of the second connecting piece 11. The second connecting piece 11 is provided with a hook 13 at one end close to the pelvic fixing ring 3. The second connecting piece 11 is hooked on the pelvic fixing ring 3 through the hook 13 and fixed to the pelvic fixing ring 3 by screws. Through the adjustment slots 9 on the first connecting piece 8 and the second connecting piece 11, the position of the telescopic support rod 4 relative to the human spine can be flexibly adjusted. The traction device retains the flexibility of the spine during surgery. Before and after the operation, the speed of muscle recovery can be faster and better.

[0055] The shape of the adjustment slot 9 includes but is not limited to a waist-shaped slot, for example, it can also be a multi-stage adjustment slot 9 composed of multiple interconnected circular holes. The adjustment slot 9 is provided between the telescopic support rod 4 and the swing rod 22, and between the telescopic support rod 4 and the pelvic fixing ring 3, so that the position and angle of the telescopic support rod 4 can be adjusted according to the patient's body shape, so as to better fit the patient. Preferably, the first connecting member 8, the second connecting member 11 and the swing rod 22 are provided with anti-slip grooves 12, so that the nut 10 is not easy to loosen when in contact with the anti-slip grooves 12.

[0056] like Figure 8 and Fig. 9 The telescopic support rod 4 includes an inner rod 41, an outer tube 42, and a screw sleeve 43. The screw sleeve 43 is rotatably fixed at one end of the outer tube 42 and is provided with a threaded hole. The outer tube 42 and the screw sleeve 43 are both sleeved on the inner rod 41. The surface of the inner rod 41 is provided with threads. The screw sleeve 43 is connected to the inner rod 41 through threaded matching. When the screw sleeve 43 rotates, the inner rod 41 is driven to move axially along the outer tube 42, so that the length of the telescopic support rod 4 can be adjusted to match different heights. Preferably, the outer tube 42 is provided with an axial visual slot 44 and a scale 45, so that the adjustment amount can be intuitively seen. The screw sleeve 43 is combined with a scale to form a non-gear adjustment, which increases the accuracy of size adjustment and the convenience of use adjustment.

[0057] As described above, the embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit the same. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some of the technical features therein by equivalents. However, these modifications or replacements do not deviate the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present invention. Therefore, all other embodiments obtained by those skilled in the art without making creative efforts belong to the protection scope of the present invention.

Claims

1. A movable traction device for severe spinal deformity, characterized in that: include: Headband; Two universal rotating mechanisms are connected to the left and right ends of the head ring respectively; A pelvic fixation ring with an adjustable circumference located below the head ring; A plurality of telescopic support rods, the lower ends of which are connected to the pelvic fixing ring, and the upper ends of which are connected to the universal rotating mechanism to support the head ring.

2. The movable severe spinal deformity traction device according to claim 1, characterized in that: The universal rotation mechanism comprises a ball head rod and a swing rod, one end of the ball head rod is connected to the head ring, the ball head end of the ball head rod and the swing rod are configured to form a universal ball joint structure, and the upper end of the telescopic support rod is connected to the swing rod.

3. The movable severe spinal deformity traction device according to claim 2, characterized in that: The universal rotation mechanism also includes a bearing, a bearing seat and a fastening cover. The ball head end of the ball head rod is placed in a spherical hole formed by the bearing seat and the fastening cover. A mounting hole is provided in the middle of the rocker arm. The bearing seat is installed in the mounting hole. The bearing sleeve is arranged on the bearing seat and forms a hole-axis match with the mounting hole.

4. The movable severe spinal deformity traction device according to claim 2, characterized in that: The upper end of the telescopic support rod is connected to the swing rod through a first connecting piece, and both the first connecting piece and the swing rod are provided with an adjustment slot. The first connecting piece and the swing rod are fixed by bolts and nuts, and the bolts pass through the adjustment slots on the first connecting piece and the adjustment slots on the swing rod and are locked with the nuts; The upper end of the telescopic support rod is provided with an external thread and is sleeved with two nuts. The upper end of the telescopic support rod passes through the adjustment slot on the first connecting piece, and the telescopic support rod and the first connecting piece are locked by nuts distributed on the upper and lower sides of the first connecting piece.

5. The movable severe spinal deformity traction device according to claim 4, characterized in that: The lower end of the telescopic support rod is connected to the pelvic fixing ring through the second connecting piece. The lower end of the telescopic support rod is provided with an external thread and is sleeved with two nuts. The second connecting piece is provided with an adjustment groove. The lower end of the telescopic support rod passes through the adjustment groove on the second connecting piece. The telescopic support rod and the second connecting piece are locked by nuts distributed on the upper and lower sides of the second connecting piece.

6. The movable severe spinal deformity traction device according to claim 1, characterized in that: The universal rotation mechanism includes a clamping assembly, which includes a seat body and a movable clamping jaw. The seat body is connected to the ball head rod, the seat body includes an upper clamping arm and a lower clamping arm, the movable clamping jaw is located between the upper clamping arm and the lower clamping arm, the bottom surface of the movable clamping jaw and the top surface of the lower clamping arm are both provided with grooves matching the head ring, the distance between the movable clamping jaw and the lower clamping arm is adjustable, and the movable clamping jaw and the lower clamping arm cooperate to clamp the head ring.

7. The movable severe spinal deformity traction device according to claim 6, characterized in that: The rear end of the head ring is provided with an upward convex arc-shaped making way section for making way for the patient to lie flat.

8. The movable severe spinal deformity traction device according to claim 1, characterized in that: The telescopic support rod includes an inner rod, an outer tube and a screw sleeve. The screw sleeve is rotatably fixed on one end of the outer tube and is provided with a threaded hole. The outer tube and the screw sleeve are both sleeved on the inner rod. The surface of the inner rod is provided with threads. The screw sleeve is connected to the inner rod through threaded cooperation. When the screw sleeve rotates, the inner rod is driven to move axially along the outer tube.

9. The movable severe spinal deformity traction device according to claim 8, characterized in that: The outer tube is provided with a visible groove along the axial direction and is provided with scales.

10. The movable severe spinal deformity traction device according to claim 1, characterized in that: The pelvic fixing ring comprises two U-shaped sections, and a plurality of screw mounting holes are arranged on the U-shaped sections. The two U-shaped sections are connected by passing screws through the screw mounting holes on the two U-shaped sections. The circumference of the pelvic fixing ring can be adjusted by installing screws in different screw mounting holes.

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