CN212213858U - Relay type bone moving device based on gear power - Google Patents
Relay type bone moving device based on gear power Download PDFInfo
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- CN212213858U CN212213858U CN202020437896.0U CN202020437896U CN212213858U CN 212213858 U CN212213858 U CN 212213858U CN 202020437896 U CN202020437896 U CN 202020437896U CN 212213858 U CN212213858 U CN 212213858U
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Abstract
The utility model discloses a relay type bone moving device based on gear power and a use method, belonging to the technical field of medical instruments for orthopedics. The relay type bone moving device comprises an internal fixing bridging plate, a sliding block, a plurality of groups of external rotating shaft combiners and a plurality of screws. When carrying out the bone and removing, the sleeve is moved in the rotation, and then drives the sliding block, and the removal of sliding block can drive and cut free bone piece and remove, makes the interval in bone defect district diminish, reads through the scale mark on the power shaft core and removes distance data. By adopting the device, the internal fixation bridging steel plate and the external rotating shaft combiner with the gear can be effectively combined, and a relay type extension mode is adopted according to the length of the bone defect, so that the sliding block carrying the cut bone block stably slides on the sliding chute of the internal fixation bridging plate, the bone block is pulled on the premise of ensuring the force line, and a simple, safe, effective and reliable bone moving technology can be realized.
Description
Technical Field
The utility model belongs to the technical field of medical apparatus of orthopedics, especially, relate to a relay formula bone moves device based on gear power.
Background
In 1950, Russian university Ilizarov advocated the use of external fixators in combination with bone distraction osteogenesis to treat bone defects. A plurality of researches find that the Ilizarov bone moving technology can effectively correct lower limb angulation deformity and limb length inequality and treat fracture nonunion and bone defect.
Comminuted fracture and open fracture caused by pathological factors such as trauma, inflammation, bone disease and the like are accompanied by massive bone defects, defects caused by segmental osteonecrosis caused by infection, unequal limb and the like, and all the problems belong to bone defects caused by diseases. In addition, the bone moving technology is widely applied to the heightening operation of plastic medicine in clinic, the moving technology is clinically applied for many years, the technology is mature, and the curative effect is reliable.
The bone moving technology is characterized in that metaphysis of long bones of limbs is cut off, a cut-off bone block is pulled to the opposite side at a speed of prolonging 1mm per day through an accurate fixing device, bone end cavities caused by pulling are filled with I-type collagen in a cross-linking mode, and the I-type collagen and osteoblast clusters can be constructed into a miniature bone column. Histological and ultrasound structural studies have shown that osteoblasts can bring together individual collagen bundles to form bone-like material, which eventually undergoes a mineralization process by intramembranous ossification.
The current fixation devices used for bone mobilization include manual and electric external fixation brackets, magnetic intramedullary nail devices. The external fixing frame is widely applied, however, although the external fixing frame is simple in design, the external fixing frame is heavy in appearance and difficult to care, the needle channel is used for cutting soft tissues, the needle channel is infected, the proximal joint flexion and extension activities are limited (pain caused by the needle channel cutting the soft tissues during activities), the biomechanical stability is poor (the eccentricity is too large), the fixing failure is caused, and a series of complications are difficult to control by clinicians.
The magnetic intramedullary nail is developed by foreign scholars and applied to clinic, most defects of an external fixing frame are avoided, but documents show that the magnetic intramedullary nail has the defects of too fast traction, difficult retraction, backward movement, bending, breakage, unstable rotation and the like. In addition, the price is very expensive and is not suitable for clinical popularization.
In order to adapt to the development of bone moving technology and reduce a plurality of complications of various bone lengthening devices at present, it is imperative to develop a novel bone moving device which is simple in design, safe, effective and low in cost.
SUMMERY OF THE UTILITY MODEL
The utility model discloses to the bone among the prior art remove the device deposit can arouse the complication to and the high scheduling problem of price, provide a simple structure, with low costs, the gear power bone that does not have the complication moves device and application method. By adopting the device, the internal fixation bridging steel plate and the external rotating shaft combiner with the gear can be effectively combined, and a relay type extension mode is adopted according to the length of the bone defect, so that the sliding block carrying the cut bone block stably slides on the sliding chute of the internal fixation bridging plate, the bone block is pulled on the premise of ensuring the force line, and a simple, safe, effective and reliable bone moving technology can be realized.
The technical scheme of the utility model:
a relay type bone moving device based on gear power comprises an internal fixing bridge plate 1, a sliding block 2, a plurality of groups of external rotating shaft combiners and a plurality of screws 7.
The inner fixed bridging plate 1 is of a rectangular thin plate structure, and a plurality of threaded holes a8 are formed in the fixed bridging plate 1; a sliding groove is formed in the inner fixed bridging plate 1, and a plurality of groups of threaded holes b9 are formed in two sides of the sliding groove; the screw 7 passes through the screw hole a8 to fix the internal fixation bridging plate 1 with the bone 10 with bone defect, and the defect area of the bone 10 is located in the middle of the internal fixation bridging plate 1.
The external rotating shaft combiner comprises a power shaft core 3, a moving sleeve 4, an anti-withdrawal sleeve 5 and a pressure nut 6.
The power shaft core 3 is of a cylindrical structure, external threads are formed in two ends of the power shaft core, an external gear a is arranged between the external threads, scale marks are arranged on the surface of the external gear a and used for reading the bone moving distance, and the power shaft core 3 is arranged in a threaded hole b9 of the internal fixed bridging plate 1.
One end of the peripheral surface of the moving sleeve 4 is provided with an external gear b, and the other end of the peripheral surface is processed into a regular hexagon structure; the inner circumferential surface of the moving sleeve 4 is provided with an internal gear a; the moving sleeve 4 is sleeved on the power shaft core 3, an internal gear a of the moving sleeve 4 is meshed with an external gear a of the power shaft core 3, and an external gear b of the moving sleeve 4 is close to the internal fixed bridging plate 1.
The sliding block 2 is arranged in a sliding chute of the internal fixed bridging plate 1, the sliding block 2 is provided with a linear rack along the sliding direction, and the linear rack of the sliding block 2 is meshed with an external gear b of the moving sleeve 4; the sliding block 2 is provided with a plurality of threaded holes c11, and the screws 7 penetrate through the threaded holes c11 to fix the sliding block with the bone 10.
An internal gear b is arranged on the inner side of the anti-retreat sleeve 5, one end of the anti-retreat sleeve 5 is processed into an inner hexagonal countersunk hole, and the inner hexagonal countersunk hole has the same regular hexagon structure as the moving sleeve 4; the anti-moving sleeve 5 is sleeved on the power shaft core 3, an inner gear b of the anti-moving sleeve 5 is meshed with an outer gear a of the power shaft core 3, and an inner hexagonal countersunk hole of the anti-moving sleeve 5 is matched and fixed with a regular hexagon structure of the moving sleeve 4.
The pressurizing nut 6 is arranged on the external thread of the power shaft core 3, and the moving sleeve 4 and the anti-moving sleeve 5 are tightly pressed on the inner fixed bridging plate 1 through screwing pretightening force, so that the moving sleeve 4 is prevented from rotating and the anti-moving sleeve 5 is prevented from being separated.
A use method of a relay type bone moving device based on gear power comprises the following steps:
the method comprises the following steps: selecting a proper bone moving device according to the length of the bone 10 with bone defect, and sterilizing the internal fixed bridging plate 1, the sliding block 2, the power shaft core 3, the moving sleeve 4, the anti-withdrawal sleeve 5, the pressure nut 6 and the screw 7.
Step two: the internal fixation bridge plate 1 is bridge-fixed with screws 7 to both ends of a bone 10 with bone defect, and the bone defect area of the bone 10 is placed in the middle of the internal fixation bridge plate 1.
Step three: a straight line is selected at the metaphysis of the bone 10 as the resection line 12, and the area between the resection line 12 and the bone defect of the bone 10 is the free bone mass.
Step four: the sliding block 2 is fixed to the free bone block using screws 7.
Step five: the bone is cut along the cut line 12.
Step six: the position and the number of the external rotary shaft combiners are selected according to the moving force and the moving stroke length, and the power shaft core 3 is screwed into the threaded hole b9 of the internal fixed bridge plate 1 in a rotating way.
Step seven: the moving sleeve 4 is sleeved into the power shaft core 3, the internal gear a of the moving sleeve 4 is meshed with the external gear a of the power shaft core 3, and the external gear b of the moving sleeve 4 is meshed with the linear rack of the sliding block 2.
Step eight: the anti-retreat sleeve 5 is sleeved on the power shaft core 3, an inner hexagonal countersunk hole of the anti-retreat sleeve 5 is matched and fixed with a regular hexagonal structure of the moving sleeve 4, and an inner gear b of the anti-retreat sleeve 5 is meshed with an outer gear a of the power shaft core 3.
Step nine: the pressurizing nut 6 is arranged on the external thread of the power shaft core 3, the moving sleeve 4 and the anti-moving sleeve 5 are tightly pressed on the inner fixed bridging plate 1 through screwing pretightening force, and the moving sleeve 4 is prevented from rotating and the anti-moving sleeve 5 is prevented from being separated.
Step ten: when the bone is moved, the compression nut 6 and the anti-withdrawal sleeve 5 are taken down, the moving sleeve 4 is rotated to further drive the sliding block 2, the movement of the sliding block 2 can drive the cut free bone blocks to move, so that the space between the bone defect areas is reduced, and the moving distance data is read through the scale marks on the power shaft core 3; after the bone is moved, installing an anti-withdrawal sleeve 5 and a pressure nut 6 according to the eighth step and the ninth step; and pulls the new bone tissue along the resection line 12.
When the moving sleeve 4 is rotated, the moving sleeve 4 is always kept to be tightly attached to the internal fixed bridging plate 1, and the bone moving distance is read through the scale marks on the power shaft core 3;
after the moving is finished, installing an anti-withdrawal sleeve 5 and a pressure nut 6 according to the installation step eight and the installation step nine; if the moving resistance is large or the moving stroke is long, the number of the external rotating shaft combiner can be increased to move in a relay manner.
The utility model has the advantages that:
soft tissue cutting: the mode of rotating the sleeve at a fixed position is adopted in vitro, and the sleeve slides through the track of the internal sliding block and is pulled forwards to form a bone, so that the defect of soft tissue cutting by an external fixing frame needle channel is effectively prevented;
the force line is accurate: the sliding block that cuts the bone piece that carries slides along internal fixation bridging board track, and the tractive force line is more accurate.
Biomechanics: the locking steel plate system is better in biomechanical feasibility compared with an external fixator.
Nursing and daily life: the number of the in-vitro rotary combiner is selected according to the lack length of the sclerotin, so that the in-vitro retention of the device is reduced as much as possible, and the device is beneficial to nursing and wearing clothes.
Operational energy efficiency: the device can be moved in two directions, and can reversely rotate the moving sleeve to prevent the occurrence of wire-drawing-shaped drawing bone formation if the osteogenesis area has poor osteogenesis.
Use the utility model discloses a device can close on joint activity in early stage, prevents the emergence of the stiff complication of joint.
In a word, the device is effectively combined with an internal fixed bridging steel plate and an external rotating shaft combiner with gears, and a simple, safe, effective and reliable bone moving technology can be realized.
Drawings
Fig. 1 is a front view of the overall structure of the present invention;
FIG. 2 is a schematic structural view of an internal fixation bridge plate;
FIG. 3 is a schematic view of a slider mounting position;
FIG. 4 is a schematic view of a slider configuration;
fig. 5 is a schematic view of the power shaft core structure.
In the figure: 1. internally fixing a bridge plate; 2. a slider; 3. a power shaft core; 4. moving the sleeve; 5. a withdrawal prevention sleeve; 6. a compression nut; 7. a screw; 8. a threaded hole a; 9. a threaded hole b; 10. a bone; 11. a threaded hole c; 12. and (6) cutting off the line.
Detailed Description
In order to make the objects, features and advantages of the present invention more obvious and understandable, the present invention is further described below with reference to the accompanying drawings in combination with the embodiments so that those skilled in the art can implement the present invention by referring to the description text, and the protection scope of the present invention is not limited to the embodiments. It is obvious that the embodiments described below are only a part of the embodiments of the present invention, and not all of them. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.
A relay type bone moving device based on gear power as shown in figure 1 comprises an internal fixing bridge plate 1, a sliding block 2, two sets of external rotating shaft combiners and 8 screws 7.
As shown in fig. 2, the rectangular thin plate structure of the internal fixation bridging plate 1 is provided with a plurality of threaded holes a8 on the fixation bridging plate 1; a sliding groove is formed in the inner fixed bridging plate 1, and a plurality of groups of threaded holes b9 are formed in two sides of the sliding groove; the screw 7 passes through the screw hole a8 to fix the internal fixation bridging plate 1 with the bone 10 with bone defect, and the defect area of the bone 10 is located in the middle of the internal fixation bridging plate 1.
The external rotating shaft combiner comprises a power shaft core 3, a moving sleeve 4, an anti-withdrawal sleeve 5 and a pressure nut 6.
As shown in fig. 5, the power shaft core 3 is a cylindrical structure, both ends of the power shaft core are provided with external threads, an external gear a is arranged between the external threads, the surface of the external gear a is provided with scale marks for reading the bone moving distance, and the power shaft core 3 is installed in a threaded hole b9 of the internal fixed bridging plate 1.
One end of the peripheral surface of the moving sleeve 4 is provided with an external gear b, and the other end of the peripheral surface is processed into a regular hexagon structure; the inner circumferential surface of the moving sleeve 4 is provided with an internal gear a; the moving sleeve 4 is sleeved on the power shaft core 3, an internal gear a of the moving sleeve 4 is meshed with an external gear a of the power shaft core 3, and an external gear b of the moving sleeve 4 is close to the internal fixed bridging plate 1.
A sliding block 2 shown in fig. 4 is installed in a sliding groove of an internal fixed bridging plate 1, the sliding block 2 is provided with a linear rack along the sliding direction, the linear rack of the sliding block 2 is meshed with an external gear b of a moving sleeve 4, and the meshing structure is shown in fig. 3; the sliding block 2 is provided with a plurality of threaded holes c11, and the screws 7 penetrate through the threaded holes c11 to fix the sliding block with the bone 10.
An internal gear b is arranged on the inner side of the anti-retreat sleeve 5, one end of the anti-retreat sleeve 5 is processed into an inner hexagonal countersunk hole, and the inner hexagonal countersunk hole has the same regular hexagon structure as the moving sleeve 4; the anti-moving sleeve 5 is sleeved on the power shaft core 3, an inner gear b of the anti-moving sleeve 5 is meshed with an outer gear a of the power shaft core 3, and an inner hexagonal countersunk hole of the anti-moving sleeve 5 is matched and fixed with a regular hexagon structure of the moving sleeve 4.
The pressurizing nut 6 is arranged on the external thread of the power shaft core 3, and the moving sleeve 4 and the anti-moving sleeve 5 are tightly pressed on the inner fixed bridging plate 1 through screwing pretightening force, so that the moving sleeve 4 is prevented from rotating and the anti-moving sleeve 5 is prevented from being separated.
A use method of a relay type bone moving device based on gear power comprises the following steps:
the method comprises the following steps: selecting a proper bone moving device according to the length of the bone 10 with bone defect, and sterilizing the internal fixed bridging plate 1, the sliding block 2, the power shaft core 3, the moving sleeve 4, the anti-withdrawal sleeve 5, the pressure nut 6 and the screw 7.
Step two: the internal fixation bridge plate 1 is bridge-fixed with screws 7 to both ends of a bone 10 with bone defect, and the bone defect area of the bone 10 is placed in the middle of the internal fixation bridge plate 1.
Step three: a straight line is selected at the metaphysis of the bone 10 as the resection line 12, and the area between the resection line 12 and the bone defect of the bone 10 is the free bone mass.
Step four: the sliding block 2 is fixed to the free bone block using screws 7.
Step five: the bone is cut along the cut line 12.
Step six: this implementation installs two sets of external rotation axis combiners, screws into the rotatory screw hole b9 of internal fixation bridging plate 1 both sides with power axle core 3.
Step seven: the moving sleeve 4 is sleeved into the power shaft core 3, the internal gear a of the moving sleeve 4 is meshed with the external gear a of the power shaft core 3, and the external gear b of the moving sleeve 4 is meshed with the linear rack of the sliding block 2.
Step eight: the anti-retreat sleeve 5 is sleeved on the power shaft core 3, an inner hexagonal countersunk hole of the anti-retreat sleeve 5 is matched and fixed with a regular hexagonal structure of the moving sleeve 4, and an inner gear b of the anti-retreat sleeve 5 is meshed with an outer gear a of the power shaft core 3.
Step nine: the pressurizing nut 6 is arranged on the external thread of the power shaft core 3, the moving sleeve 4 and the anti-moving sleeve 5 are tightly pressed on the inner fixed bridging plate 1 through screwing pretightening force, and the moving sleeve 4 is prevented from rotating and the anti-moving sleeve 5 is prevented from being separated.
Step ten: when the bone is moved, the compression nut 6 and the anti-withdrawal sleeve 5 are taken down, the moving sleeve 4 is rotated to further drive the sliding block 2, the movement of the sliding block 2 can drive the cut free bone blocks to move, so that the space between the bone defect areas is reduced, and the moving distance data is read through the scale marks on the power shaft core 3; after the bone is moved, the anti-back sleeve 5 and the compression nut 6 are installed according to the eighth step and the ninth step, and the new bone tissue is pulled out along the cutting line 12.
When the moving sleeve 4 is rotated, the moving sleeve 4 is always kept to be tightly attached to the internal fixed bridging plate 1, and the bone moving distance is read through the scale marks on the power shaft core 3;
after the moving is finished, installing an anti-withdrawal sleeve 5 and a pressure nut 6 according to the installation step eight and the installation step nine; if the moving resistance is large or the moving stroke is long, the number of the external rotating shaft combiner can be increased to move in a relay manner.
The above, only be the concrete implementation of the preferred embodiment of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art is in the technical scope of the present invention, according to the technical solution of the present invention and the utility model, the concept of which is equivalent to replace or change, should be covered within the protection scope of the present invention.
Claims (1)
1. A relay type bone moving device based on gear power is characterized by comprising an internal fixed bridge plate (1), a sliding block (2), a plurality of groups of external rotating shaft combiners and a plurality of screws (7);
the inner fixed bridging plate (1) is of a rectangular thin plate structure, and a plurality of threaded holes a (8) are formed in the inner fixed bridging plate (1); a sliding chute is arranged on the inner fixed bridging plate (1), and a plurality of groups of threaded holes b (9) are arranged on two sides of the sliding chute; the screw (7) passes through the threaded hole a (8) to fix the internal fixation bridging plate (1) and the bone (10) accompanied with bone defect, and the defect area of the bone (10) is positioned in the middle of the internal fixation bridging plate (1);
the external rotating shaft combiner comprises a power shaft core (3), a moving sleeve (4), an anti-withdrawal sleeve (5) and a pressure nut (6);
the power shaft core (3) is of a cylindrical structure, external threads are formed in two ends of the power shaft core, an external gear a is formed between the external threads, scale marks are arranged on the surface of the external gear a and used for reading a bone moving distance, and the power shaft core (3) is installed in a threaded hole b (9) of the internal fixed bridging plate (1);
one end of the peripheral surface of the moving sleeve (4) is provided with an external gear b, and the other end of the peripheral surface is processed into a regular hexagon structure; the inner circumferential surface of the moving sleeve (4) is provided with an internal gear a; the moving sleeve (4) is sleeved on the power shaft core (3), an internal gear a of the moving sleeve (4) is meshed with an external gear a of the power shaft core (3), and an external gear b of the moving sleeve (4) is close to the internal fixed bridging plate (1);
the sliding block (2) is arranged in a sliding chute of the inner fixed bridging plate (1), a linear rack is arranged on the sliding block (2) along the sliding direction, and the linear rack of the sliding block (2) is meshed with an external gear b of the moving sleeve (4); the sliding block (2) is provided with a plurality of threaded holes c (11), and the sliding block and the skeleton (10) are fixed by screws (7) penetrating through the threaded holes c (11);
an internal gear b is arranged on the inner side of the anti-retreat sleeve (5), one end of the anti-retreat sleeve (5) is processed into an inner hexagonal countersunk hole, and the inner hexagonal countersunk hole has the same regular hexagon structure as the moving sleeve (4);
the anti-withdrawal sleeve (5) is sleeved on the power shaft core (3), an internal gear b of the anti-withdrawal sleeve (5) is meshed with an external gear a of the power shaft core (3), and an inner hexagonal countersunk hole of the anti-withdrawal sleeve (5) is matched and fixed with a regular hexagonal structure of the moving sleeve (4);
the pressurizing nut (6) is arranged on the external thread of the power shaft core (3), and the moving sleeve (4) and the anti-withdrawal sleeve (5) are tightly pressed on the internal fixed bridging plate (1) through screwing pretightening force, so that the moving sleeve (4) is prevented from rotating and the anti-withdrawal sleeve (5) is prevented from being separated.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202020437896.0U CN212213858U (en) | 2020-03-30 | 2020-03-30 | Relay type bone moving device based on gear power |
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| CN202020437896.0U CN212213858U (en) | 2020-03-30 | 2020-03-30 | Relay type bone moving device based on gear power |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111297457A (en) * | 2020-03-30 | 2020-06-19 | 海城市正骨医院 | Relay type bone moving device based on gear power and using method |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111297457A (en) * | 2020-03-30 | 2020-06-19 | 海城市正骨医院 | Relay type bone moving device based on gear power and using method |
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