CN211583348U - Bone dissociation device - Google Patents

Abstract

The utility model discloses a bone dissociation device belongs to medical instrument technical field. It includes: the device comprises a base, a first fixing part and a second fixing part, wherein the base is provided with a rod body structure, one end of the rod body structure is connected to the base, and the other end of the rod body structure extends outwards to form an extending end; the breaking cutter handle structure is slidably arranged on the rod body structure, a breaking cutter is arranged at one end, close to the extending end of the rod body structure, of the breaking cutter handle structure, and a hook blocking structure used for blocking the breaking cutter is arranged at the end part of the extending end of the rod body structure; and the driving mechanism is connected with the disconnecting knife handle structure and is used for driving the disconnecting knife handle structure to move close to the hook structure along the length direction of the rod body structure. The utility model discloses a bone is from disconnected device when being used for from disconnected sclerotin, the bone is disconnected the end level and smooth not have the angle, need not waste more time and goes to repair disconnected end, and the subsequent operation step of being convenient for expandes, and effectively reduces the risk of bone splitting.

Description

Bone dissociation device

Technical Field

The utility model relates to the technical field of medical equipment, especially, relate to a bone dissociation device.

Background

The development of the bone plastic technology is closely related to the development and the application of surgical instruments, and for the safety and the accuracy of the operation, it is necessary to equip a high-efficiency special instrument suitable for a specific anatomical part before the operation is carried out, and the osteotomy is a common treatment scheme in the bone plastic technology and is generally applied to diseases such as osteonecrosis, people who cannot be restored due to the dislocation of the comminuted fracture, bone defect, limb shortening, orthopedic restoration and the like. Among them, for an operation of breaking the bone connection of a specific anatomical region in a deep part, such as a mandibular bone operation in a maxillofacial surgery, an intraoral incision is selected in the operation, the exposure of an operation field is limited, it is necessary to completely peel off muscles and soft tissues attached to a mandibular bone after a periosteum is cut through, although it is necessary to sufficiently expose a mandibular bone up to a flat occlusal plane down to a mandibular angle and polish the lateral cortical bone in both mandibular angle regions, a bone cutting line is calibrated using a small grinding ball according to the design before the operation, and an operation area is very narrow and limited. This art formula uses the pendulum saw of different length to amputate the angle of jaw on planned osteotomy line in proper order, but in cutting the osteotomy line, angle of jaw goes up a back wall distal end and is difficult to fully expose and obtain effectual processing, often remain the bone connection, there is the problem that the back wall of lower jaw goes up a back wall and is difficult to cut, and because there is abundant tissue and the blood vessel that is difficult to discover around the deep, if trade cuts, can lead to unpredictable damage, present conventional operation scheme, for the safety, can preferably leave 2-5 mm's remaining bone connection usually, then will leave 2-5 mm's remaining bone connection through disconnected bone device again and cut.

At present, the conventional separation scheme for connecting and cutting the residual bone with the length of 2-5mm is that after an osteotome is fixed at a specific residual bone connecting site, the osteotome is hammered by a hammer and the bone is impacted by aligning the cutting site to connect and cut the residual bone, but the force is not easy to grasp in the operation, so that the one-time separation cannot be ensured, repeated operation is often needed, important blood vessels and soft tissues around the bone at the cutting site are extremely easy to damage, the shape of the broken end of the bone is difficult to ensure, and the bone at the cutting site is easy to split; after the residual bone connection is impacted and separated by the separation tool, the shape of the broken end of the bone is uncertain, and the anatomical part is deep, so that the trimming and polishing are difficult to carry out, and unpredictable side effects after the operation are often caused; moreover, when the bone is cut by the osteotome, the formed broken end of the bone can also damage surrounding tissues due to sharpness, the safety is not ensured, even the fracture is serious, and a fracture line upwards enters the temporomandibular joint, so that more serious consequences are caused. Furthermore, the newly formed mandible angle and the new face contour at two sides are basically symmetrical after operation, and if bone fracture exists, the symmetry is difficult to guarantee. In addition, the above problems are also common in other bone fractures using existing bone fracture instruments. Therefore, a bone fracture instrument which can enable a bone fracture end to be smooth and have no angle when a bone is fractured is needed, does not need to waste more time to repair the bone fracture end, and effectively reduces the risk of bone fracture is needed.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to overcome above-mentioned prior art at least one not enough, provide one kind and be used for making the bone broken end level and smooth not have the angle when breaking the sclerotin, need not waste more time and remove to repair the broken end, subsequent operation step of being convenient for expandes, and effectively reduces the bone of the risk of bone splitting from disconnected device.

The utility model provides an above-mentioned technical problem's technical scheme as follows: a bone detachment apparatus, comprising:

the device comprises a base, wherein a rod body structure is arranged on the base, one end of the rod body structure is connected to the base, and the other end of the rod body structure extends outwards to form an extending end;

the breaking cutter handle structure is slidably mounted on the rod body structure, a breaking cutter is arranged at one end, close to the extending end of the rod body structure, of the breaking cutter handle structure, and a hook blocking structure used for blocking the breaking cutter is arranged at the end part of the extending end of the rod body structure;

and the driving mechanism is connected with the disconnecting knife handle structure and is used for driving the disconnecting knife handle structure to move close to the hook structure along the length direction of the rod body structure.

The utility model has the advantages that: the utility model provides a be equipped with body of rod structure on the base, from disconnected hilt structure slidable mounting be in body of rod structure is last, and the tip of body of rod structure's extension end is equipped with and is used for blockking from the fender hook structure of disconnected sword, in addition, the bone is still including being used for the drive follow from disconnected hilt structure the length direction of body of rod structure is close to keep off the hook structure and remove. Through the utility model provides a bone is from disconnected device when breaking the sclerotin, handheld holding the base and stretching into the rod structure needs from the rear of disconnected sclerotin, need be to pressing close to the needs from disconnected sclerotin one side appropriate tensioning rod structure with rod structure fixed, then through actuating mechanism drive from disconnected handle of a knife structure edge rod structure's length direction is close to keep off the hook structure and removes, and then control slides along rod structure from disconnected handle of a knife structure, makes the installation stop being used for of the tip of connecting at the extension end of rod structure relatively from disconnected handle of a knife structural separating the hook structure relative motion of disconnected sword, when pressing close to the hook structure motion from disconnected sword, will be located from the sclerotin between disconnected sword and the hook structure and break. In the process of breaking the bone, the breaking cutter handle structure slides along the rod body structure, so that the movement direction of the breaking cutter connected to the breaking cutter handle structure is controllable; in addition, the acting force of the bone from the breaking knife connected to the breaking knife handle structure is controlled through the driving mechanism, and therefore the acting force of the bone from the breaking knife to the bone is controlled to be suitable for controlling the acting force of the breaking knife to exert pressure on the bone, the bone between the breaking knife and the hook blocking structure is convenient to break, repeated damage of a bone cutting plane caused by over-excitation operation in the bone cutting process of clinical operation can be avoided, repeated bone impacting operation can be reduced, the operation process is simple and rapid, the breaking knife can be rapidly separated from the bone, the safety is high, the bone broken end is smooth and free of angles, more time is not wasted for trimming the broken end, subsequent operation steps can be conveniently unfolded, and the risk of bone fracture is effectively reduced.

In addition, on the basis of the technical scheme, the utility model discloses can also make following improvement, can also have following additional technical feature.

According to an embodiment of the present invention, the bone distraction device further comprises a rack, the rack being connected to one side of the rod structure; the driving mechanism comprises a driving gear and at least one driven gear, the driving gear and the driven gear are installed on the base, the driven gear is meshed with the driving gear in a matched mode, and the driven gear is meshed with the rack in a matched mode. In this embodiment, one side of the breaking handle structure is connected with a rack, the base is provided with a driven gear and a driving gear, the driven gear and the driving gear are meshed with the rack in a matching manner, the rack can be driven to move by rotating the driving gear, and then the breaking handle structure is controlled to slide along the rod structure, so that the breaking knife mounted on the breaking handle structure is relatively connected to the end part of the extending end of the rod structure and used for blocking the relative movement of the blocking hook structure of the breaking knife. In addition, the acting force of the breaking knife connected to the breaking knife handle structure on the bone is controlled through the speed of rotating the driving gear, so that the acting force of the breaking knife on the bone is controlled to be suitable for controlling the acting force of the breaking knife on the bone, the bone between the breaking knife and the hook blocking structure is convenient to break, repeated damage of a bone cutting plane caused by overexcitation operation in the bone cutting process of clinical operation can be avoided, repeated bone impacting operation can be reduced, the operation process is simple and rapid, the breaking knife can be rapidly separated from the bone, the safety is high, the bone broken end is smooth and free of angles, more time is not wasted for trimming the broken end, subsequent operation steps can be conveniently unfolded, and the risk of bone fracture is effectively reduced.

According to an embodiment of the utility model, it installs to leave disconnected sword detachable it is structural from disconnected handle of a knife. The separation knife in the embodiment is detachably arranged on the separation knife handle structure, so that the separation knife is convenient to maintain and replace, and the applicability of the bone separation device is improved.

According to the utility model discloses an embodiment, include handle of a knife body and connect from disconnected handle of a knife structure direction slide rail on the handle of a knife body, structural being equipped with of body of rod with the guide way of direction slide rail looks adaptation, direction slide rail adaptation slidable mounting be in the guide way. The handle of a knife body in this embodiment is equipped with the direction slide rail, and through structural being equipped with of the body of rod with the guide way of direction slide rail looks adaptation, be convenient for with direction slide rail adaptation slidable mounting in the guide way, and the direction slide rail is in under driven gear and rack toothing's drive slide in the guide way, be favorable to controlling the direction of motion of breaking the handle of a knife structure.

According to the utility model discloses an embodiment, it is just right to keep off the hook structure be equipped with on the side of keeping off the hook structure and can accomodate the recess of the cutting edge of breaking the sword. This embodiment is through keeping off the hook structure just right be equipped with on the side of keeping off the disconnected sword and dodge the recess of the cutting edge of keeping off the disconnected sword is favorable to stretching into under the drive action of driven gear and rack from the cutting edge of disconnected sword the recess, and then the cutting edge that is favorable to keeping off the disconnected sword fully keeps off the sclerotin between disconnected sword and the hook structure.

According to an embodiment of the utility model, be close to from disconnected handle structure the one end of keeping off the hook structure is the wedge column structure. This embodiment will be close to from disconnected handle of a knife structure the one end of keeping off the hook structure is wedge form structure, is favorable to reducing from the width size of disconnected handle of a knife structure, be favorable to being applied to constrictive osteotomy gap, reduce resistance when removing to the hook structure, for providing the good operation field of vision from the broken bone operating personnel simultaneously, be favorable to cuting the deep bone tissue that is difficult to touch.

According to an embodiment of the present invention, the rod structure comprises a straight end and a curved end connected; a guide groove matched with the guide sliding rail is formed in one side of the straight end along the length direction of the straight end, the guide groove extends in the bending direction of the bent end at the bent end, the section of the guide groove is a U-shaped hole, and the guide sliding rail is matched and slidably mounted in the guide groove;

the breaking cutter handle structure comprises a bendable bent cutter handle structure and a driving handle body used for pushing the bent cutter handle structure to move;

the bent knife handle structure comprises a head connecting block and a tail connecting block, the head connecting block comprises a first body and a first supporting bulge for slidably supporting the first body, and the first supporting bulge is connected to one side of the first body; the tail connecting block comprises a second body and a second supporting bulge used for slidably supporting the second body, the second supporting bulge is connected to one side of the second body and arranged on the same side as the first supporting bulge on the first body, and both the first supporting bulge and the second supporting bulge can be matched and slidably mounted in the guide groove;

one end of the first body is provided with a first connecting protrusion or a first connecting groove, one end of the second body is provided with a second connecting groove or a second connecting protrusion which is matched with and rotatably connected with the first connecting protrusion or the first connecting groove, the tail connecting block is rotatably connected to the first connecting block, and the tail connecting block can deflect relative to the first connecting block by taking the first connecting protrusion or the second connecting protrusion as a rotating shaft to form a variable deflection angle; the other end of the second body is connected with the breaking knife.

The bone fracture cutter structure in the embodiment comprises a bendable cutter handle structure, the bendable cutter handle structure comprises a head connecting block and a tail connecting block, the tail connecting block is rotatably connected onto the head connecting block, and the tail connecting block can deflect relative to the head connecting block by taking the first connecting bulge or the second connecting bulge as a rotating shaft to form a changed deflection angle. Therefore, the deflection angle formed by deflection of the tail connecting block relative to the head connecting block can be changed as required, so that the deflection angle formed by deflection of the breaking knife connected to the tail connecting block relative to the head connecting block can be changed to realize bending, the breaking knife can be aligned to a breaking point of a bone, and the bone is separated from the breaking knife structure and can be used for separating and breaking the bone with an angle and a blind area, for example, when the bone is separated from the far end of a curved bone cutting plane.

According to an embodiment of the utility model, the curved knife handle structure further comprises an intermediate connecting block, the intermediate connecting block is connected between the first connecting block and the tail connecting block, the intermediate connecting block comprises a third body and a third supporting bulge for slidably supporting the third body, the third supporting bulge is connected to one side of the third body and is arranged at the same side as the first supporting bulge on the first body;

one end of the body III is provided with a connecting groove III which is matched and rotatably connected with the connecting bulge I or the connecting bulge II, and the other end of the body III is provided with a connecting bulge III which is matched and rotatably connected with the connecting groove I or the connecting groove II;

the middle connecting block can be rotatably connected to the head connecting block, and the middle connecting block can deflect relative to the head connecting block by taking the connecting bulge I or the connecting bulge III as a rotating shaft to form a variable deflection angle;

the tail connecting block can be rotatably connected to the middle connecting block, and the tail connecting block can deflect relative to the middle connecting block by taking the second connecting bulge or the third connecting bulge as a rotating shaft to form a variable deflection angle.

In the embodiment, the middle connecting block is connected between the head connecting block and the tail connecting block, and the middle connecting block is rotatably connected to the head connecting block, and the middle connecting block can deflect relative to the head connecting block by taking the first connecting bulge or the third connecting bulge as a rotating shaft to form a variable deflection angle; the tail connecting block can be rotatably connected to the middle connecting block, and the tail connecting block can deflect relative to the middle connecting block by taking the second connecting bulge or the third connecting bulge as a rotating shaft to form a variable deflection angle. Therefore, the deflection angle of the middle connecting block relative to the deflection of the first connecting block to form change can be changed as required, the deflection angle of the tail connecting block relative to the deflection angle of the middle connecting block to form change can be changed, and then the breaking knife connected to the tail connecting block can deflect relative to the middle connecting block and the first connecting block to form change deflection angles, so that the breaking knife can be aligned to the breaking point of the bone, meanwhile, the angle range of the breaking knife can be enlarged, the radian of the breaking knife can be enlarged, the bone can be better separated from the breaking knife structure, and the bone with an angle and a blind area can be separated, for example, when the bone with a curved bone cutting plane is separated.

According to the utility model discloses an embodiment, the intermediate junction piece is equipped with a plurality ofly, and is adjacent on the intermediate junction piece connect protruding three can with another on the intermediate junction piece connecting groove three matches and rotates the connection, and is adjacent the intermediate junction piece with it deflects for the pivot to form the deflection angle that changes to connect protruding three. This embodiment is through being equipped with a plurality of intermediate junction blocks, and adjacent intermediate junction block with connecting protruding three and deflecting for the pivot and forming the deflection angle of change, further increase leaves the angle scope that the disconnected sword can deflect for intermediate junction block and first connecting block relatively, and then further increase leaves the flexible radian of disconnected sword, is favorable to the bone to leave the bone of disconnected sword structure better being used for to having the angle, having the sclerotin of blind area and breaking.

According to an embodiment of the present invention, the driving handle body includes a handle body, a guiding slide rail connected to one side of the handle body along the length direction of the handle body, and a rack connected to the other side of the handle body along the length direction of the handle body, the rack being arranged in parallel with the guiding slide rail;

one end of the knife handle body, which is connected with the head connecting block, is provided with a fourth connecting groove or a fourth connecting protrusion corresponding to the first connecting protrusion or the first connecting groove on the head connecting block, and the first connecting protrusion is connected in the fourth connecting groove in an adaptive manner or the fourth connecting protrusion is connected in the first connecting groove in an adaptive manner;

one side of body of rod structure is followed body of rod structure's length direction be equipped with the guide way of direction slide rail looks adaptation, the cross-section of guide way is the major arc shape hole, direction slide rail adaptation slidable mounting be in the guide way, support protruding one support protruding two with but support protruding three equal adaptation slidable mounting be in the guide way.

One side of handle of a knife body in this embodiment is equipped with the direction slide rail, just the opposite side of handle of a knife body is equipped with the rack, is convenient for realize sliding along specific direction with the drive handle body, and then promotes first connecting block and from the sword motion, is favorable to realizing from the sword and carrying out the disconnection to the sclerotin. In addition, the first connecting bulge is connected in the first connecting groove in an adaptive manner or the fourth connecting bulge is connected in the first connecting groove in an adaptive manner, and the first connecting block can deflect relative to the tool shank body by taking the first connecting bulge or the fourth connecting bulge as a rotating shaft to form a variable deflection angle; the angle range of the deflection of the bone separation knife relative to the middle connecting block and the first connecting block can be further enlarged, and the bone separation knife is favorable for better structure separation of bones with angles and dead zones. Furthermore, the handle body is provided with a rack connected to one side of the handle body along the length direction of the handle body, so that the handle body can be conveniently driven to move by adopting a gear meshed with the rack and a gear. Further, in this embodiment through structural being equipped with of the body of rod with the guide way of guide slide rail looks adaptation, be convenient for with guide slide rail adaptation slidable mounting in the guide way, support protruding one support protruding two with support protruding three equal adaptation slidable mounting in the guide way, and the guide slide rail is in slide in the guide way, be favorable to controlling the direction of motion of leaving the disconnected sword. In addition, the cross-section of guide way in this embodiment is the major arc hole, is favorable to with direction slide rail, support protruding one support protruding two with support protruding three is injectd in the guide way, prevent to lead slide rail, support protruding one support protruding two with support protruding three and break away from out from the side opening department of guide way, and ensure to lead slide rail, support protruding one support protruding two with support protruding three is reliable slip in the guide way.

Drawings

In order to more clearly illustrate the technical solution of the present invention, the drawings needed to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.

Fig. 1 is a schematic structural view of a bone distraction device according to a first embodiment of the present invention;

FIG. 2 is a schematic view of the structure of FIG. 1 with the drive and driven gears omitted;

FIG. 3 is a schematic view of the structure of FIG. 2 with the break-away shank structure omitted;

fig. 4 is a schematic view of a disconnecting knife according to a first embodiment of the present invention mounted on a disconnecting handle structure;

fig. 5 is a schematic structural view of a disconnecting handle structure according to a first embodiment of the present invention;

FIG. 6 is a front view of FIG. 1 after being straightened;

fig. 7 is a schematic structural view of a bone distraction device according to a second embodiment of the present invention;

FIG. 8 is a front view of FIG. 7 after being straightened;

fig. 9 is a schematic structural view of a bone distraction device according to a third embodiment of the present invention;

FIG. 10 is a front view of FIG. 9 after being straightened;

fig. 11 is a schematic structural view of a disconnecting handle structure in the third embodiment of the present invention;

FIG. 12 is a schematic view of the bone distraction knife structure of FIG. 11 shown in an exploded view;

FIG. 13 is a right side view of FIG. 11 after being straightened;

fig. 14 is a top view of fig. 11 after being straightened.

In the drawings, the components represented by the respective reference numerals are listed below:

1. a base, 2, a breaking cutter handle structure, 3, a breaking cutter, 4, a driving gear, 5, a driven gear, 6, a shaft, 7, a rotating handle, 10, a rod body structure, 11, a support plate, 12, a holding part, 20, a cutter handle body, 21, a guide slide rail, 22, a rack, 23, a head connecting block, 24, a middle connecting block, 25, a tail connecting block, 101, a blocking structure, 102, a groove, 103, a fixture block, 104, a guide groove, 111, a driving gear support plate, 112, a driven gear support plate, 113, a shaft hole I, 114, a shaft hole II, 201, a cutter head mounting block, 202, a cutter head mounting groove, 203, a connecting bulge I, 231, a body I, 232, a connecting bulge I, 233, a support bulge I, 234, a connecting groove I, 241, a body III, 242, a connecting bulge III, 243, a support bulge III, 244, a connecting groove III, 251, a body II, 252, a support bulge II, 253. the first tool bit mounting groove, the 254 and the second connecting groove.

Detailed Description

To make the objects, technical solutions and advantages of the present application more clear, embodiments of the present application will be described in further detail below with reference to the accompanying drawings.

In order to make the aforementioned objects, features and advantages of the present invention more clearly understood, the present invention will be described in further detail with reference to the accompanying drawings and detailed description. It should be noted that the embodiments and features of the embodiments of the present application may be combined with each other without conflict.

In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention, however, the present invention may be practiced in other ways than those specifically described herein, and therefore the scope of the present invention is not limited by the specific embodiments disclosed below.

The first embodiment is as follows:

the present embodiment provides a bone detachment apparatus, as shown in fig. 1 to 3, including: the device comprises a base 1, wherein a rod body structure 10 is arranged on the base 1, one end of the rod body structure 10 is connected to the base 1, and the other end of the rod body structure 10 extends outwards to form an extending end; the breaking knife handle structure 2 is slidably mounted on the rod body structure 10, a breaking knife 3 is arranged at one end, close to the extending end of the rod body structure 10, of the breaking knife handle structure 2, and a hook structure used for blocking the breaking knife 3 is arranged at the end part of the extending end of the rod body structure 10; and the driving mechanism is connected with the disconnecting knife handle structure 2 and is used for driving the disconnecting knife handle structure 2 to move close to the hook structure along the length direction of the rod body structure 10.

In this embodiment, as shown in fig. 1 to 3, a rod structure 10 is disposed on the base 1, the breaking handle structure 2 is slidably mounted on the rod structure 10, and a hook structure for blocking the breaking blade 3 is disposed at an end of an extending end of the rod structure 10, and the bone breaking device further includes a mechanism for driving the breaking handle structure 2 to move along a length direction of the rod structure 10 and close to the hook structure. When the bone fracture device in the embodiment is used for breaking bone, the muscle around the bone to be broken is stripped off the bone surface, so that the gap formed between the stripped muscle and the bone surface can pass through the blocking structure 101, the base 1 is held tightly by hand, the rod body structure 10 is stretched into the back of the bone to be separated, the rod body structure 10 is properly tensioned towards the side close to the bone to be separated to fix the rod body structure 10, then the breaking handle structure 2 is driven by the driving mechanism to move along the length direction of the rod body structure 10 close to the catch hook structure, and further controlling the breaking cutter handle structure 2 to slide along the rod body structure 10, so that the breaking cutter 3 arranged on the breaking cutter handle structure 2 is relatively connected to the hook blocking structure which is arranged at the end part of the extending end of the rod body structure 10 and used for blocking the breaking cutter 3 to move relatively, and when the breaking cutter 3 moves close to the hook blocking structure, the bone between the breaking cutter 3 and the hook blocking structure is broken.

In the embodiment, during the process of breaking the bone, the breaking handle structure 2 slides along the rod structure 10, so that the movement direction of the breaking knife 3 connected to the breaking handle structure 2 is controllable; in addition, the acting force of the breaking knife 3 connected to the breaking knife handle structure 2 on the bone is controlled by the speed of rotating the driving gear 4, so that the acting force of the breaking knife 3 on the bone is controlled, and the bone between the breaking knife 3 and the blocking structure 101 is conveniently broken.

In the present embodiment, as shown in fig. 1 and 6, in order to facilitate the operation of the driving gear 4, the driving gear 4 is provided with a rotating handle 7, and the edge of the rotating handle 7 close to the driving gear 4 is fixed on the upper surface of the driving gear 4. In addition, the driving gear 4 may be driven by other means, such as fixing the rotating shaft to the center of the driving gear 4, and driving the driving gear 4 to rotate by rotating the rotating shaft.

In an embodiment of the present invention, as shown in fig. 1 and 5, the bone detachment apparatus further includes a rack 22, and the rack 22 is connected to one side of the rod structure 10; the driving mechanism comprises a driving gear 4 and at least one driven gear 5, the driving gear 4 and the driven gear 5 are installed on the base 1, the driven gear 5 is meshed with the driving gear 4 in a matching mode, and the driven gear 5 is meshed with the rack 22 in a matching mode. In this embodiment, one side of the breaking handle structure 2 is connected with a rack 22, and a driven gear 5 and a driving gear 4 which are engaged with the rack 22 in a matching manner are installed on the base 1, and the rack 22 can be driven to move by rotating the driving gear 4, so as to control the breaking handle structure 2 to slide along the rod structure 10, so that the breaking knife 3 installed on the breaking handle structure 2 is relatively connected to the end of the extending end of the rod structure 10, and the blocking hook structure used for blocking the breaking knife 3 moves relatively. In addition, the acting force of the breaking knife 3 connected to the breaking knife handle structure 2 on the bone is controlled through the speed of the rotating driving gear 4, so that the acting force of the breaking knife 3 on the bone is favorably controlled to be proper, the bone between the breaking knife 3 and the hook blocking structure is conveniently broken, repeated damage of a bone cutting plane caused by over-excitation operation during bone cutting in clinical operation work can be avoided, repeated bone impacting operation can be reduced, the operation process is simple and rapid, the bone can be rapidly broken, the safety is high, the bone broken end is smooth and free of angle, the broken end does not need to be trimmed by wasting more time, subsequent operation steps can be conveniently unfolded, and the risk of bone fracture is effectively reduced.

In an embodiment of the present invention, as shown in fig. 1 and 5, the separation blade 3 is detachably mounted on the separation handle structure 2. The breaking knife 3 in the embodiment is detachably mounted on the breaking knife handle structure 2, so that the breaking knife 3 is convenient to maintain and replace, and the applicability of the bone breaking device is improved.

In the present embodiment, as shown in fig. 7, the breaking blade 3 is detachably mounted on the head of the holder body 20; further, in the embodiment, in order to better mount the breaking knife 3, the head of the knife handle body 20 is connected with the knife head mounting block 201, and the knife head mounting block 201 is vertically connected to the knife handle body 20; further, the bit mounting block 201 is provided with a bit mounting groove 202 for mounting the breaker 3. The tool bit mounting groove 202 in this embodiment is provided on one side of the tool bit mounting block 201 opposite to the blocking structure 101, and the cross section of the tool bit mounting groove 202 is in an isosceles trapezoid structure.

In an embodiment of the present invention, as shown in fig. 5 and 6, the breaking knife 3 includes a knife head and a knife edge connected to the knife head; the section of the tool bit mounting groove 202 in this embodiment is an isosceles trapezoid structure, and the tool bit structure is matched with the tool bit mounting groove 202.

The utility model discloses an embodiment, as shown in fig. 5, fig. 6, include handle of a knife body 20 and connect the direction slide rail 21 on handle of a knife body 20 from disconnected handle of a knife structure 2, be equipped with on body of rod structure 10 with the guide way 104 of direction slide rail 21 looks adaptation, direction slide rail 21 adaptation slidable mounting is in guide way 104. The knife handle body 20 in this embodiment is provided with the guide slide rail 21, and the guide groove 104 adapted to the guide slide rail 21 is provided on the rod structure 10, so that the guide slide rail 21 is adapted to be slidably mounted in the guide groove 104, and the guide slide rail 21 slides in the guide groove 104 under the driving of the driven gear 5 and the rack 22, which is beneficial to controlling the moving direction of the disconnecting knife handle structure 2. In addition, the holder body 20 in the present embodiment has a rectangular parallelepiped structure.

In this embodiment, as shown in fig. 1 and fig. 3, the rod structure 10 in this embodiment is a rectangular parallelepiped structure, the guide slot 104 is disposed on the right side surface of the rod structure 10, the guide slot 104 extends from the front end surface of the rod structure 10 to the middle position of the rod structure 10, and the cross section of the guide slot 104 is an isosceles trapezoid structure.

In an embodiment of the present invention, as shown in fig. 4 and 5, the end of the broken handle structure 2 close to the hook structure is a wedge-shaped structure. This embodiment is the wedge-shaped structure with the one end that disconnected handle of a knife structure 2 is close to the hook structure, is favorable to reducing the width size who leaves disconnected handle of a knife structure 2, is favorable to being applied to constrictive osteotomy gap, reduces the resistance when removing to the hook structure, has good operation view from the broken bone for leaving broken bone operating personnel simultaneously, is favorable to cuting the deep bone tissue that is difficult to touch. In the present embodiment, the front portion of the tool shank body 20 has a rectangular parallelepiped structure, and one end of the tool shank body 20 close to the blocking structure 101 is designed to have a tapered structure.

In the present embodiment, as shown in fig. 1 and 3, a groove 102 capable of receiving the cutting edge of the breaking knife 3 is provided on the side of the hook structure facing the hook structure. In the embodiment, the groove 102 capable of avoiding the blade of the separation knife 3 is formed in the side surface of the hook structure facing the separation knife 3, so that the blade of the separation knife 3 can extend into the groove 102 under the driving action of the driven gear 5 and the rack 22, and the blade of the separation knife 3 can be fully separated from the bone between the separation knife 3 and the hook structure. In the present embodiment, the barrier structure 101 is a rectangular structure, the groove 102 is a rectangular structure, and the groove 102 in the present embodiment is horizontally formed in the middle of the barrier structure 101.

In this embodiment, as shown in fig. 1 and fig. 3, one end of the blocking structure 101 is connected to the rod structure 10, and the other end of the blocking structure extends outwards parallel to the breaking blade 3 to form an extending portion, and an end of the extending portion is provided with a latch 103 facing the breaking blade 3. The blocking structure 101 in this embodiment is parallel to the outward extension of the fracture knife 3 to form an extension portion, and the end of the extension portion is provided with the fixture block 103 facing the fracture knife 3, so that the blocking structure 101 can be conveniently extended into the rear of the fractured bone to be separated, and the fixture block 103 is fixed to the joint of the bone to be separated close to the fractured bone to be separated, thereby being beneficial to improving the reliability of fixing the rod structure 10. In this embodiment, the blocking structure 101 is a baffle having a rectangular parallelepiped structure, the latch 103 has a rectangular parallelepiped structure, and the latch 103 is vertically connected to the front side surface of the blocking structure 101.

In the present embodiment, as shown in fig. 1 to 3 and 6, a support plate 11 is further disposed on the base 1, a driving gear 4 and a driven gear 5 are mounted on the support plate 11, the driven gear 5 is engaged with the driving gear 4, and the driven gear 5 is engaged with the rack 22. The driving gear 4 in this embodiment is a large gear, the driven gear 4 is a small gear, and the size of the driving gear 4 in this embodiment is five or six times the size of the driven gear 5.

In the present embodiment, as shown in fig. 2 and fig. 6, the driving gear 4 and the driven gear 5 are respectively rotatably mounted on a support plate 11 through a shaft 6, and the support plate 11 in the present embodiment is connected to the right side of the rod structure 103 and is connected to the front of the rod structure 10. Further, be equipped with the driving gear supporting disk 111 and the driven gear supporting disk 112 that bulge supporting plate 11's upper surface in the backup pad 11 of this embodiment, driving gear 4 rotates and installs on driving gear supporting disk 111, driven gear 5 rotates and installs on driven gear supporting disk 112, when rotating driving gear 4, driving gear 4 pastes the upper surface rotation of tight driving gear supporting disk 111 under the supporting role of driving gear supporting disk 111, prevent driving gear 4 drunkenness from top to bottom, thereby can improve driving gear 4 pivoted reliability, be favorable to driving gear 4 to drive driven gear 5 and rotate, also be favorable to driven gear 5 and rack 22 meshing and reliably drive rack 22. The support plate 11 in this embodiment is attached to the right side of the flat end of the rod structure 10.

In this embodiment, as shown in fig. 2 and 6, the center of the driving gear 4 is provided with a driving gear shaft hole passing through the shaft 6, the center of the driven gear 5 is provided with a driven gear shaft hole passing through the shaft 6, the driving gear support plate 111 is provided with a first shaft hole 113 used for being connected with the shaft 6 in an interference fit manner, the driven gear support plate 112 is provided with a second shaft hole 114 used for being connected with the shaft 6 in an interference fit manner, the lower end of the shaft 6 penetrates through the driving gear shaft hole, the driven gear shaft hole is connected with the first shaft hole 113 and the second shaft hole 114 in an interference fit manner, the shaft 6 is fixed on the driven gear support plate 112, the lower surface of the driving gear 4 is in contact connection with the upper surface of the driving gear support plate. Further, the central section of the shaft 6 in the vertical direction in the embodiment is in a T-shaped structure, and the driving gear 4 and the gear are limited by the upper end of the shaft 6 in the vertical direction. In addition, the driving gear 4 may be rotatably mounted on the driving gear supporting plate 111 and the driven gear supporting plate 112 in other manners.

In the present embodiment, as shown in fig. 1 to 3, in order to facilitate reliable holding of the rod structure 10, the holding portion 12 is disposed on the left side of the rod structure 10, the holding portion 12 is in a rectangular parallelepiped shape, and the holding portion 12 is vertically connected to the left side of the straight end of the rod structure 10.

Specifically, the base 1 in this embodiment is provided with a rod structure 10, the breaking handle structure 2 is slidably mounted on the rod structure 10, and the end of the extending end of the rod structure 10 is provided with a hook structure for blocking the breaking knife 3, and in addition, the bone breaking device further includes a mechanism for driving the breaking handle structure 2 to move along the length direction of the rod structure 10 close to the hook structure. When the bone fracture device in the embodiment is used for breaking a bone fracture, the base 1 is held by hand, the rod structure 10 is stretched into the back of the bone fracture to be broken, the rod structure 10 is properly tensioned to the side close to the bone fracture to be broken, the rod structure 10 is fixed, then the breaking cutter handle structure 2 is driven by the driving mechanism to move close to the hook structure along the length direction of the rod structure 10, the breaking cutter handle structure 2 is controlled to slide along the rod structure 10, the breaking cutter 3 mounted on the breaking cutter handle structure 2 is relatively connected to the hook structure which is arranged at the end part of the extending end of the rod structure 10 and used for blocking the breaking cutter 3, and when the breaking cutter 3 moves close to the hook structure, the bone fracture between the breaking cutter 3 and the hook structure is broken. In the process of breaking the bone, the breaking cutter handle structure 2 slides along the rod body structure 10, so that the movement direction of the breaking cutter 3 connected to the breaking cutter handle structure 2 is controllable; in addition, the acting force of the bone from the breaking knife 3 connected to the breaking knife handle structure 2 is controlled through the driving mechanism, so that the proper acting force for exerting pressure on the bone from the breaking knife 3 is favorably controlled, the bone between the breaking knife 3 and the hook blocking structure is convenient to break, repeated damage of a bone cutting plane caused by over-excited operation in the bone cutting process of clinical operation can be avoided, repeated bone impacting operation can be reduced, the operation process is simple and rapid, the bone can be rapidly separated from the broken bone, the safety is high, the bone broken end is smooth and angle-free, more time is not wasted for trimming the broken end, the subsequent operation steps can be conveniently unfolded, and the risk of bone fracture is effectively reduced. The surgical deep bone fracture device in the embodiment can be suitable for mandibular angle resection, LeFortI type osteotomy, LeFortII type osteotomy, LeFortIII type osteotomy and the like in maxillofacial surgery. Further, the surgical deep bone distraction device in this embodiment is particularly, but not exclusively, used for the resection of residual bone connections that are left 2-5 mm. In addition, the bone fracture-separating device in the first embodiment is suitable for transversely separating deep bone, such as a blind area for separating the back of a mandibular lifting support. Furthermore, the residual bone connection with the length of 2-5mm can be obtained only by experienced doctors, and generally horizontal operators can leave the bone connection wider and thicker due to worry about serious injury of the swing saw, and the residual bone connection with the width and the thickness is easier to split when being chiseled and broken.

Example two:

the second embodiment is basically the same as the first embodiment, and is different from the first embodiment in that:

in this embodiment, as shown in fig. 7 and 8, the guide groove 104 in this embodiment is formed on the upper side surface of the rod structure 10, the guide groove 104 extends from the front end surface of the rod structure 10 to the middle position of the rod structure 10, and the cross section of the guide groove 104 is an isosceles trapezoid structure. In the present embodiment, the front portion of the tool shank body 20 has a rectangular parallelepiped structure, and one end of the tool shank body 20 close to the blocking structure 101 is designed to have a tapered structure.

In this embodiment, as shown in fig. 7 and 8, the blocking structure 101 is connected to the upper side surface of the rod structure 10, and a groove 102 capable of avoiding the cutting edge of the separation blade 3 is formed in the side surface of the blocking structure 101 facing the separation blade 3, so that the cutting edge of the separation blade 3 can be extended into the groove 102 under the driving action of the driven gear 5 and the rack 22, and the cutting edge of the separation blade 3 can be connected and separated from the residual bone between the separation blade 3 and the blocking structure 101. In the present embodiment, the blocking structure 101 is a rectangular structure, the groove 102 is a rectangular structure, and the groove 102 in the present embodiment is vertically formed in the middle of the blocking structure 101. In addition, in the present embodiment, the blocking structure 101 is a baffle having a rectangular parallelepiped structure, the latch 103 has a rectangular parallelepiped structure, and the latch 103 is horizontally connected to the front side surface of the blocking structure 101. The bone fracture-separation device in the second embodiment is suitable for longitudinally separating deep bone, such as longitudinally separating deep bone connection.

Example three:

the third embodiment is basically the same as the first embodiment, and is different from the first embodiment in that:

in this embodiment, the rod structure 10 includes a straight end and a curved end connected; a guide groove 104 matched with the guide sliding rail 21 is formed in one side of the straight end along the length direction of the straight end, the guide groove 104 extends in the bending direction of the bent end at the bent end, the section of the guide groove 104 is a circular arc-shaped hole, and the guide sliding rail 21 is matched and slidably installed in the guide groove 104; the breaking cutter handle structure 2 comprises a bendable bent cutter handle structure and a driving handle body for pushing the bent cutter handle structure to move; the bent cutter handle structure comprises a first connecting block 23 and a second connecting block 25, wherein the first connecting block 23 comprises a first body 231 and a first supporting bulge 233 used for slidably supporting the first body 231, and the first supporting bulge 233 is connected to one side of the first body 231; the tail connecting block 25 comprises a second body 251 and a second supporting protrusion 252 for slidably supporting the second body 251, the second supporting protrusion 252 is connected to one side of the second body 251 and is arranged on the same side as the first supporting protrusion 233 on the first body 231, and both the first supporting protrusion 233 and the second supporting protrusion 252 can be matched and slidably mounted in the guide groove 104; one end of the first body 231 is provided with a first connecting protrusion 232 or a first connecting groove 234, one end of the second body 251 is provided with a second connecting groove 254 or a second connecting protrusion which is matched with and rotatably connected with the first connecting protrusion 232 or the first connecting groove 234, the tail connecting block 25 is rotatably connected to the first connecting block 23, and the tail connecting block 25 can deflect relative to the first connecting block 23 by taking the first connecting protrusion 232 or the second connecting protrusion as a rotating shaft to form a variable deflection angle; the other end of the second body 251 is connected with a breaking knife 3.

In this embodiment, the bone fracture-splitting knife structure of this embodiment includes a bendable handle structure, the handle structure includes a head connecting block 23 and a tail connecting block 25, the tail connecting block 25 is rotatably connected to the head connecting block 23, and the tail connecting block 25 can deflect relative to the head connecting block 23 by using a first connecting protrusion 232 as a rotating shaft to form a variable deflection angle. From this, can change the relative first connecting block 23 of tail connecting block 25 and deflect and form the deflection angle of change as required, and then can make the deflection angle that forms the change that deflects relative first connecting block 23 of disconnected sword 3 that is connected on tail connecting block 25 and realize crooked, be favorable to aiming at the disconnected position of sclerotin with disconnected sword 3 for the bone is disconnected the disconnected sword structure and can be used for carrying out the disconnection to the sclerotin that has the angle, has the blind area, for example when the sclerotin of the curved osteotomy plane distal end of disconnection. As shown in fig. 1 to 4, the tail connecting block 25 is rotatably connected to the head connecting block 23, that is, the intermediate connecting block 24 is omitted, so that the tool holder structure including the head connecting block 23 and the tail connecting block 25 of the present embodiment can be obtained. Further, when the second connecting protrusion 25 is provided with the second connecting protrusion, the second connecting protrusion is matched with the first connecting groove 234 in the first connecting block 23, that is, the first connecting groove 102 and the first connecting protrusion 232 in the first connecting block 23 are arranged at the opposite positions to those shown in fig. 12 and 13. In this embodiment, the tail connection block 25 is directly connected to the head connection block 23.

The utility model discloses an embodiment, as shown in fig. 9, 10, the other end of body two 251 is equipped with the tool bit mounting groove one 253 with the installation of tool bit adaptation, and the tool bit adaptation is installed in tool bit mounting groove one 253. This embodiment is equipped with the tool bit mounting groove 253 of installing with the tool bit adaptation through the other end at body two 251, is favorable to with tool bit direct mount at tool bit mounting groove 253, and is convenient for maintain and change the tool bit. Further, the first tool bit mounting groove 253 in the embodiment has an isosceles trapezoid cross section, and the tool bit is matched with the first tool bit mounting groove 253.

In an embodiment of the present invention, as shown in fig. 9 and 10, the curved hilt structure further includes a middle connection block 24, the middle connection block 24 is connected between the first connection block 23 and the last connection block 25, the middle connection block 24 includes a third body 241 and a third support protrusion 243 for slidably supporting the third body 241, the third support protrusion 243 is connected to one side of the third body 241 and is disposed on the same side as the first support protrusion 233 on the first body 231; one end of the third body 241 is provided with a third connecting groove 244 which is matched and rotatably connected with the first connecting protrusion 232 or the second connecting protrusion, and the other end of the third body is provided with a third connecting protrusion 242 which is matched and rotatably connected with the first connecting groove 234 or the second connecting groove 254; the middle connecting block 24 can be rotatably connected to the first connecting block 23, and the middle connecting block 24 can deflect relative to the first connecting block 23 by taking the first connecting protrusion 232 or the third connecting protrusion 242 as a rotating shaft to form a variable deflection angle; the tail connecting block 25 is rotatably connected to the middle connecting block 24, and the tail connecting block 25 can be deflected to form a variable deflection angle with respect to the middle connecting block 24 by using the second connecting protrusion or the third connecting protrusion 242 as a rotation axis.

In the present embodiment, as shown in fig. 9, 11 and 12, the present embodiment is configured such that the intermediate joint block 24 is connected between the head joint block 23 and the tail joint block 25, the intermediate joint block 24 is rotatably connected to the head joint block 23, and the intermediate joint block 24 is deflectable relative to the head joint block 23 by a variable deflection angle about the first connecting projection 232 or the third connecting projection 242; the tail connecting block 25 is rotatably connected to the middle connecting block 24, and the tail connecting block 25 can be deflected relative to the middle connecting block 24 by using the second connecting protrusion or the third connecting protrusion 242 as a rotating shaft to form a variable deflection angle. From this, can change the relative first connecting block 23 of middle connecting block 24 and deflect and form the deflection angle of change as required, change the relative middle connecting block 24 deflection of tail connecting block 25 and form the deflection angle of change, and then can make the relative middle connecting block 24 of disconnected sword 3 and the first connecting block 23 deflection of the disconnected sword 3 of connecting on tail connecting block 25 form the deflection angle of change, be favorable to aligning the disconnected position of sclerotin with disconnected sword 3, simultaneously, be favorable to increasing the angle scope that can deflect from disconnected sword 3, and then increase the flexible radian of disconnected sword 3, be favorable to the bone to leave the better being used for of disconnected sword structure and separate the fracture to the sclerotin that has the angle, there is the blind area, for example when the planar sclerotin of disconnected crooked osteotomy of leaving.

In the present embodiment, as shown in fig. 9, 11 and 12, the rack 22 is driven by rotating the driving gear 4 to move, and then the breaking handle structure 2 is controlled to slide along the rod structure 10, so that the breaking blade 3 mounted on the breaking handle structure 2 is relatively connected to the blocking structure 101 at the end of the extending end of the rod structure 10 for blocking the breaking blade 3, and when the breaking blade 3 moves close to the blocking structure 101, the residual bone between the breaking blade 3 and the blocking structure 101 is connected and broken.

In the embodiment, as shown in fig. 12 to 14, the guide groove 104 adapted to the guide rail 21, the first support protrusion 233, the second support protrusion 252 and the third support protrusion 243 is disposed on the rod structure 10, so that the guide rail 21 is adapted to be slidably mounted in the guide groove 104, the first support protrusion 233, the second support protrusion 252 and the third support protrusion 243 are adapted to be slidably mounted in the guide groove 104, and the guide rail 21 slides in the guide groove 104, which is beneficial to controlling the moving direction of the breaking knife 3. In addition, the cross section of the guide slot 104 in this embodiment is a circular arc-shaped hole, which is beneficial to defining the guide rail 21, the first support protrusion 233, the second support protrusion 252 and the third support protrusion 243 in the guide slot 104, preventing the guide rail 21, the first support protrusion 233, the second support protrusion 252 and the third support protrusion 243 from coming off from the side opening of the guide slot 104, and ensuring the guide rail 21, the first support protrusion 233, the second support protrusion 252 and the third support protrusion 243 to reliably slide in the guide slot 104. In the embodiment, the bending end is bent upward, and the bending direction of the bending end may be various, which is not described herein again.

The utility model discloses an embodiment, as shown in FIG. 9, 11 to 14, middle connecting block 24 is equipped with a plurality ofly, and the protruding three 242 of connection on the adjacent middle connecting block 24 can match with the three 244 of connecting groove on another middle connecting block 24 and rotate and be connected, and adjacent middle connecting block 24 uses three 242 of connection protruding to deflect as the pivot and forms the variable angle of deflection. This embodiment is through being equipped with a plurality of middle connecting blocks 24, and adjacent middle connecting block 24 uses three 242 of connecting protrusions to deflect as the pivot and form the deflection angle of change, and the further increase leaves the angular range that disconnected sword 3 can deflect relative middle connecting block 24 and first connecting block 23, and then the flexible radian of further increase leaves disconnected sword 3, is favorable to the bone to leave better being used for of disconnected sword structure to having the angle, having the sclerotin of blind area and breaking.

In an embodiment of the present invention, as shown in fig. 11 to 14, the driving handle includes a handle body 20, a guiding slide rail 21 connected to one side of the handle body 20 along the length direction of the handle body 20, and a rack 22 connected to the other side of the handle body 20 along the length direction of the handle body 20, wherein the rack 22 is parallel to the guiding slide rail 21; one end of the tool shank body 20 connected with the first connecting block 23 is provided with a fourth connecting groove or a fourth connecting protrusion 203 corresponding to the first connecting protrusion 232 or the first connecting groove 234 on the first connecting block 23, and the first connecting protrusion 232 is connected in the fourth connecting groove in an adaptive manner or the fourth connecting protrusion 203 is connected in the first connecting groove 234 in an adaptive manner; one side of the rod structure 10 is provided with a guide groove 104 matched with the guide slide rail 21 along the length direction of the rod structure 10, the cross section of the guide groove 104 is a rectangular arc-shaped hole, the guide slide rail 21 is matched and slidably mounted in the guide groove 104, and the first support protrusion 233, the second support protrusion 252 and the third support protrusion 243 are all matched and slidably mounted in the guide groove 104.

In this embodiment, as shown in fig. 11 to 12, a guiding slide rail 21 is disposed on one side of the handle body 20, and a rack 22 is disposed on one side of the handle body 20, so as to facilitate the driving handle body to slide along a specific direction, and further to push the first connecting block 23 and the separation blade 3 to move, which is beneficial to the separation blade 3 to separate bone. In addition, the first connecting protrusion 232 is connected in the first connecting groove 234 in an adaptive manner, or the fourth connecting protrusion 203 is connected in the second connecting groove 234 in an adaptive manner, and the first connecting block 23 can deflect relative to the tool shank body 20 by taking the first connecting protrusion 232 or the fourth connecting protrusion 203 as a rotating shaft to form a variable deflection angle; further, the deflection angle range of the bone separation knife 3 relative to the middle connecting block 24 and the first connecting block 23 can be enlarged, and the bone separation knife is favorable for better structure separation of bone with an angle and a blind area. Further, a rack 22 is arranged on one side of the handle body 20, so that the handle body 20 can be conveniently driven to move by adopting the gear meshed with the rack 22 and the gear.

In the present embodiment, the first connecting groove 234, the second connecting groove 254, the third connecting groove 244 and the fourth connecting groove are all arc-shaped holes with one open end; the cross sections of the first connecting protrusion 232, the second connecting protrusion, the third connecting protrusion 242 and the fourth connecting protrusion 203 are arc semi-circles.

Further, as shown in fig. 10, in the present embodiment, the guide groove 104 adapted to the guide slide rail 21 is disposed on the rod structure 10, so that the guide slide rail 21 is adapted to be slidably mounted in the guide groove 104, the first support protrusion 233, the second support protrusion 252, and the third support protrusion 243 are all adapted to be slidably mounted in the guide groove 104, and the guide slide rail 21 slides in the guide groove 104, which is beneficial to controlling the moving direction of the breaking knife 3. In addition, the cross section of the guide slot 104 in this embodiment is a circular arc-shaped hole, which is beneficial to defining the guide rail 21, the first support protrusion 233, the second support protrusion 252 and the third support protrusion 243 in the guide slot 104, preventing the guide rail 21, the first support protrusion 233, the second support protrusion 252 and the third support protrusion 243 from coming off from the side opening of the guide slot 104, and ensuring the guide rail 21, the first support protrusion 233, the second support protrusion 252 and the third support protrusion 243 to reliably slide in the guide slot 104.

In this embodiment, as shown in fig. 9, one end of the blocking structure 101 is vertically connected to the curved end of the rod structure 10, and the other end of the blocking structure extends outward perpendicular to the curved end to form an extension portion, and the end of the extension portion is provided with a latch 103 facing the separation blade 3. The tip of the extension of barrier structure 101 in this embodiment is equipped with the fixture block 103 towards the tool bit, is favorable to stretching into the rear that needs the remaining bone that breaks to connect with barrier structure 101, to pressing close to the remaining bone that needs break and connecting one side and making fixture block 103 and bone junction fixed, is favorable to improving the reliability of fixing rod body structure 10. In this embodiment, the blocking structure 101 is a baffle having a rectangular parallelepiped structure, the latch 103 has a rectangular parallelepiped structure, and the latch 103 is vertically connected to the front side surface of the blocking structure 101.

In addition, except the technical scheme disclosed in this embodiment, to the driving gear 4, driven rack 22, cutting edge etc. in the utility model can refer to the conventional technical scheme in this technical field, and these conventional technical schemes are not the key point of the utility model, the utility model discloses do not state here in detail.

In the present application, the term "plurality" means two or more unless expressly defined otherwise. The terms "mounted," "connected," "fixed," and the like are to be construed broadly, and for example, "connected" may be a fixed connection, a removable connection, or an integral connection; "coupled" may be direct or indirect through an intermediary. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

In the description of the present invention, it should be understood that the terms "upper", "lower", "front", "back", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of the description, but do not indicate or imply that the referred device or unit must have a specific direction, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present application.

In the description herein, the description of the terms "one embodiment," "some embodiments," "specific embodiments," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the application. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

The above description is only a preferred embodiment of the present application and is not intended to limit the present application, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, improvement and the like made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims (10)

1. A bone distraction device, comprising:

the device comprises a base, wherein a rod body structure is arranged on the base, one end of the rod body structure is connected to the base, and the other end of the rod body structure extends outwards to form an extending end;

the breaking cutter handle structure is slidably mounted on the rod body structure, a breaking cutter is arranged at one end, close to the extending end of the rod body structure, of the breaking cutter handle structure, and a hook blocking structure used for blocking the breaking cutter is arranged at the end part of the extending end of the rod body structure;

and the driving mechanism is connected with the disconnecting knife handle structure and is used for driving the disconnecting knife handle structure to move close to the hook structure along the length direction of the rod body structure.

2. The bone distraction device of claim 1, further comprising a rack attached to one side of the stem structure; the driving mechanism comprises a driving gear and at least one driven gear, the driving gear and the driven gear are installed on the base, the driven gear is meshed with the driving gear in a matched mode, and the driven gear is meshed with the rack in a matched mode.

3. The bone distraction device of claim 1, wherein the distraction knife is removably mounted on the distraction handle structure.

4. The bone distraction device of claim 1, wherein the distraction handle structure comprises a handle body and a guide slide rail connected to the handle body, the rod structure is provided with a guide groove adapted to the guide slide rail, and the guide slide rail is slidably mounted in the guide groove.

5. The bone distraction device of claim 4, wherein an end of the distraction handle structure adjacent the hook structure is in a wedge-shaped configuration.

6. The bone distraction device of claim 1, wherein the side of the hook structure facing the hook structure is provided with a recess for receiving the cutting edge of the distraction knife.

7. The bone distraction device of claim 4, wherein the stem structure comprises a flat end and a curved end connected; a guide groove matched with the guide sliding rail is formed in one side of the straight end along the length direction of the straight end, the guide groove extends in the bending direction of the bent end at the bent end, the section of the guide groove is a U-shaped hole, and the guide sliding rail is matched and slidably mounted in the guide groove;

the breaking cutter handle structure comprises a bendable bent cutter handle structure and a driving handle body used for pushing the bent cutter handle structure to move;

the bent knife handle structure comprises a head connecting block and a tail connecting block, the head connecting block comprises a first body and a first supporting bulge for slidably supporting the first body, and the first supporting bulge is connected to one side of the first body; the tail connecting block comprises a second body and a second supporting bulge used for slidably supporting the second body, the second supporting bulge is connected to one side of the second body and arranged on the same side as the first supporting bulge on the first body, and both the first supporting bulge and the second supporting bulge can be matched and slidably mounted in the guide groove;

one end of the first body is provided with a first connecting protrusion or a first connecting groove, one end of the second body is provided with a second connecting groove or a second connecting protrusion which is matched with and rotatably connected with the first connecting protrusion or the first connecting groove, the tail connecting block is rotatably connected to the first connecting block, and the tail connecting block can deflect relative to the first connecting block by taking the first connecting protrusion or the second connecting protrusion as a rotating shaft to form a variable deflection angle; the other end of the second body is connected with the breaking knife.

8. The bone distraction device of claim 7, wherein the curved handle structure further comprises an intermediate connecting block, the intermediate connecting block is connected between the head connecting block and the tail connecting block, the intermediate connecting block comprises a third body and a third supporting protrusion for slidably supporting the third body, the third supporting protrusion is connected to one side of the third body and is arranged on the same side as the first supporting protrusion on the first body, and the third supporting protrusion is fittable and slidably mounted in the guide groove;

one end of the body III is provided with a connecting groove III which is matched and rotatably connected with the connecting bulge I or the connecting bulge II, and the other end of the body III is provided with a connecting bulge III which is matched and rotatably connected with the connecting groove I or the connecting groove II;

the middle connecting block can be rotatably connected to the head connecting block, and the middle connecting block can deflect relative to the head connecting block by taking the connecting bulge I or the connecting bulge III as a rotating shaft to form a variable deflection angle;

the tail connecting block can be rotatably connected to the middle connecting block, and the tail connecting block can deflect relative to the middle connecting block by taking the second connecting bulge or the third connecting bulge as a rotating shaft to form a variable deflection angle.

9. The bone distraction device of claim 8, wherein a plurality of said intermediate connection blocks are provided, said connecting protrusions three of adjacent intermediate connection blocks are adapted to be rotatably connected with said connecting grooves three of another intermediate connection block, and said adjacent intermediate connection blocks are deflected by said connecting protrusions three as rotation axes to form varying deflection angles.

10. The bone distraction device of claim 9, wherein the drive handle body comprises a handle body, a guide slide rail connected to one side of the handle body along the length direction of the handle body, and a rack connected to the other side of the handle body along the length direction of the handle body, the rack being arranged parallel to the guide slide rail;

one end of the knife handle body, which is connected with the head connecting block, is provided with a fourth connecting groove or a fourth connecting protrusion corresponding to the first connecting protrusion or the first connecting groove on the head connecting block, and the first connecting protrusion is connected in the fourth connecting groove in an adaptive manner or the fourth connecting protrusion is connected in the first connecting groove in an adaptive manner;

one side of body of rod structure is followed body of rod structure's length direction be equipped with the guide way of direction slide rail looks adaptation, the cross-section of guide way is the major arc shape hole, direction slide rail adaptation slidable mounting be in the guide way, support protruding one support protruding two with but support protruding three equal adaptation slidable mounting be in the guide way.

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