CN115998398A - Bone fixing device - Google Patents
Bone fixing device Download PDFInfo
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- CN115998398A CN115998398A CN202310112772.3A CN202310112772A CN115998398A CN 115998398 A CN115998398 A CN 115998398A CN 202310112772 A CN202310112772 A CN 202310112772A CN 115998398 A CN115998398 A CN 115998398A
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Abstract
The present invention provides a bone fixation device comprising: two fixing plates; the fixing plate support comprises a first fixing frame and a second fixing frame, wherein the first fixing plate is detachably connected with the first fixing frame, the second fixing plate is detachably connected with the second fixing frame, one end of the first fixing frame is hinged with one end of the second fixing frame, the fixing plate support is in a loosening state and a fixing state, when the fixing plate support is in the loosening state, the first fixing frame and the second fixing frame are far away, and when the fixing plate support is in the fixing state, the first fixing frame and the second fixing frame are close to each other; the pressurizing support extends vertically and is connected with the fixing plate support, the pressurizing support is arranged in an axial telescopic mode, and second bone connecting pieces corresponding to the joint section, the osteotomy section and the diaphysis section are arranged on the pressurizing support. Through the technical scheme that this application provided, can solve the problem that the implantation efficiency of the fixed plate of the inside and outside of suffering from bone in the correlation technique is low.
Description
Technical Field
The invention relates to the technical field of prosthesis implantation, in particular to a bone fixing device.
Background
In the orthopaedics field, defects of large bones (including humerus, ulna, radius, femur, tibia and fibula) of limbs are often caused by tumors, infections, severe wounds and the like, and the defects are always difficult in the orthopaedics field due to the reasons of difficult bone repair, structural stability, difficult recovery and the like. In the aspect of bone tumor, bone primary malignant tumor is well developed in children and teenagers, is a fatal disease seriously affecting the physical and mental health of the children and teenagers, and is most commonly bone sarcoma and ewing sarcoma, and the bone tumor of the four limbs of the children is a long-standing difficulty in the field of bone tumor. With the application of new auxiliary chemotherapy from the last 70 th century, more and more children patients can be cured and receive limb protection treatment, and the current cure rate is 65-70%. With the advent of limb protection technology, large sections of allogeneic bone (including joint structures) are mostly adopted for reconstruction after tumor resection in the 80 s, but because of no suitable internal fixation, the incidence of long-term complications is high, including infection, disunion, fracture and the like.
In the related art, the reconstruction of the reserved joint after the excision of the large bone defect of the adult complex limb and the long bone of the malignant tumor part of the children limb is mainly generally performed by biological reconstruction, and mainly various bone grafts are used for reconstruction, including allogeneic bone, autologous bone, tumor bone inactivation and the like. And (3) inactivating and implanting the allogeneic bone, the autologous bone and the tumor bone into the original tumor bone segment to finish the recovery of the bone structure, namely biological reconstruction. After biological reconstruction, it is generally recommended to fix the bone fracture by using a bridging fixing plate, after the tumor bone segment is removed, the allogeneic bone, the autologous bone or the inactivated tumor bone is implanted into the defect position, and then the bone is bridged across the whole length of the tumor bone segment by horizontally arranging the fixing plates on the inner side and the outer side of the affected bone.
However, the fixation of a large section of complex bone defect caused by tumor resection or various reasons during operation often requires a plurality of fixing plates to be fixed, the fixing plates of the inner side and the outer side of the affected bone are required to be sequentially implanted and fixed, and after the fixing plate of the first side is implanted, the fixing plate of the second side is not easy to be implanted to the expected anatomical position because the broken end of the bone is fixed, so that the operation time is greatly prolonged.
Disclosure of Invention
The invention provides a bone fixing device which is used for solving the problem of low implantation efficiency of a fixing plate on the inner side and the outer side of a bone in the related art.
The present invention provides a bone fixation device, comprising: the two fixing plates comprise a joint section, a bone cutting section and a backbone section which are sequentially connected, the two fixing plates extend vertically, and a first bone connecting piece is arranged on the fixing plates; the fixing plate support comprises a first fixing frame and a second fixing frame, wherein the first fixing plate is detachably connected with the first fixing frame, the second fixing plate is detachably connected with the second fixing frame, one end of the first fixing frame is hinged with one end of the second fixing frame, the fixing plate support is in a loosening state and a fixing state, when the fixing plate support is in the loosening state, the first fixing frame and the second fixing frame are far away, and when the fixing plate support is in the fixing state, the first fixing frame and the second fixing frame are close to each other; the pressurizing support extends vertically and is connected with the fixing plate support, the pressurizing support is arranged in an axial telescopic mode, and second bone connecting pieces corresponding to the joint section, the osteotomy section and the diaphysis section are arranged on the pressurizing support.
Further, the pressurizing support comprises a sleeve, a first fixing rod and a second fixing rod, the first fixing rod and the second fixing rod are respectively located at two ends of the sleeve, the sleeve is rotatably sleeved on the first fixing rod and the second fixing rod, the first fixing rod and the second fixing rod are respectively in threaded connection with the sleeve, the first fixing rod and the second fixing rod are in a pressurizing state close to each other and a pressure relief state far away from each other, and second bone connecting pieces are respectively arranged on the first fixing rod and the second fixing rod.
Further, the bone fixing device comprises two pressing brackets, the two pressing brackets are respectively positioned at two ends of the fixing plate bracket, and the second fixing rod of the first pressing bracket and the first fixing rod of the second pressing bracket are respectively connected with the fixing plate bracket.
Further, a first mounting block is arranged on the first fixing rod of the first pressurizing bracket, the second bone connecting piece comprises at least two first spicules which are arranged on the first mounting block at intervals along the transverse direction, the first spicules extend along the transverse direction, and the first spicules correspond to the joint sections; the second bone connecting piece further comprises a second spicule arranged on a second fixing rod of the first pressurizing bracket, the second spicule extends along the transverse direction, and the second spicule corresponds to the osteotomy section; a second mounting block is arranged on a second fixing rod of the second pressurizing bracket, the second bone connecting piece comprises at least two third spicules which are arranged on the second mounting block at intervals along the transverse direction, the third spicules extend along the transverse direction, and the third spicules correspond to the diaphysis section; the second bone connecting piece further comprises a fourth bone needle arranged on the first fixing rod of the second pressurizing bracket, the fourth bone needle extends transversely, and the fourth bone needle corresponds to the osteotomy section.
Further, a tool jack is arranged on the outer side wall of the sleeve; and/or the cross-sectional shape of the sleeve is polygonal.
Further, the fixed plate bracket further comprises an adjusting stud and an adjusting nut, wherein the first end of the adjusting stud is fixedly connected with one of the first fixing frame and the second fixing frame, and the adjusting nut is arranged at the second end of the adjusting stud and is abutted against the other one of the first fixing frame and the second fixing frame.
Further, the first fixing frame and the second fixing frame are arc-shaped plates; and/or the two fixing plates are provided with threaded holes, the first fixing frame is provided with first screws, the first screws penetrate through the threaded holes and are connected with the first fixing plate, the second fixing frame is provided with second screws, and the second screws penetrate through the threaded holes and are connected with the second fixing plate.
Further, the shape of the first fixation plate is adapted to the shape of the pressure side of the afflicted bone, and the shape of the second fixation plate is adapted to the shape of the tension side of the afflicted bone; and/or the thickness of the first fixing plate is smaller than that of the second fixing plate, and the width of the first fixing plate is smaller than that of the second fixing plate.
Further, the thickness of the articular segment of the first fixation plate is less than the thickness of the osteotomy segment of the first fixation plate and the thickness of the diaphysis segment of the first fixation plate, and the thickness of the articular segment of the second fixation plate is less than the thickness of the osteotomy segment of the second fixation plate and the thickness of the diaphysis segment of the second fixation plate; and/or, at least two first mounting holes are arranged on the joint section of the first fixing plate at intervals along the transverse direction, at least two second mounting holes are arranged on the joint section of the second fixing plate at intervals along the transverse direction, the first bone connecting piece comprises a first fastening piece and a second fastening piece, the first fastening piece penetrates through the first mounting holes and is connected with the first fixing plate, and the second fastening piece penetrates through the second mounting holes and is connected with the second fixing plate.
Further, two first mounting holes are formed in the osteotomy section of the first fixing plate at intervals in the vertical direction, two second mounting holes are formed in the osteotomy section of the second fixing plate at intervals in the vertical direction, the first bone connecting piece comprises a first fastening piece and a second fastening piece, the first fastening piece penetrates through the first mounting holes and is connected with the first fixing plate, and the second fastening piece penetrates through the second mounting holes and is connected with the second fixing plate; and/or, two first mounting holes are formed in the backbone section of the first fixing plate at vertical intervals, two second mounting holes are formed in the backbone section of the second fixing plate at vertical intervals, the number of the first mounting holes in the backbone section of the first fixing plate is smaller than that of the second mounting holes in the backbone section of the second fixing plate, the first skeleton connecting piece comprises a first fastening piece and a second fastening piece, the first fastening piece penetrates through the first mounting holes and is connected with the first fixing plate, and the second fastening piece penetrates through the second mounting holes and is connected with the second fixing plate.
Further, when the fixed plate bracket is in a fixed state, the first mounting holes on the first fixed plate and the second mounting holes on the second fixed plate are staggered; and the side wall of the first fixing plate and the side wall of the second fixing plate are respectively provided with an osteotomy reference line.
According to the technical scheme, the bone fixing device comprises a fixing plate support, a pressurizing support and two fixing plates, the two fixing plates are connected with a first fixing frame and a second fixing frame respectively before implantation, the fixing plate support is switched to a loosening state, the two fixing plates are respectively arranged on two sides of an affected bone, then the fixing plate support is switched to a fixing state, the two fixing plates are attached to the affected bone, the joint bone segment, the osteotomy segment and the diaphysis bone segment of the affected bone are enabled to achieve reset alignment in the radial direction of the affected bone, the joint bone segment, the osteotomy segment and the diaphysis bone segment of the affected bone are connected to the pressurizing support through a second bone connecting piece, the pressurizing support is contracted, the joint bone segment, the osteotomy segment and the diaphysis bone segment of the affected bone are enabled to be close to each other, accordingly reset alignment is achieved on the axial direction of the affected bone, the pressurizing support is utilized to enable the joint bone segment, the affected bone segment, the osteotomy segment and the diaphysis enabled to be provided with the pressurizing support, finally the first bone connecting piece is utilized to connect the fixing plate and the pressurizing support to be separated from the affected bone, and the affected bone is accurately fixed to the affected bone.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention. In the drawings:
fig. 1 shows a schematic structural view of a bone fixation device provided according to an embodiment of the present invention;
fig. 2 is a schematic view showing a structure of a bone fixation device according to another aspect of the present invention;
FIG. 3 illustrates a schematic structural view of a further view of a bone fixation device provided in accordance with an embodiment of the present invention;
fig. 4 is a schematic view showing a structure of a bone fixation device according to still another aspect of the present invention;
fig. 5 shows a top view of a bone fixation device provided in accordance with an embodiment of the present invention;
fig. 6 is a schematic view showing the structure of a fixation plate of a bone fixation device according to an embodiment of the present invention;
fig. 7 is a schematic view showing another view of a fixation plate of a bone fixation device according to an embodiment of the present invention;
fig. 8 is a schematic structural view showing still another view of a fixation plate of a bone fixation device according to an embodiment of the present invention;
fig. 9 is a schematic structural view showing still another view of a fixation plate of a bone fixation device according to an embodiment of the present invention;
fig. 10 illustrates a top view of a fixation plate of a bone fixation device provided in accordance with an embodiment of the present invention.
Wherein the above figures include the following reference numerals:
10. a fixing plate; 11. a knuckle section; 12. osteotomy segment; 13. a backbone section; 14. a threaded hole; 15. a first mounting hole; 16. a second mounting hole; 17. osteotomy reference line;
20. a fixed plate bracket; 21. a first fixing frame; 22. the second fixing frame; 23. adjusting the stud; 24. an adjusting nut; 25. a first screw; 26. a second screw;
30. a pressurizing bracket; 31. a second bone connection; 311. a first bone pin; 312. a second bone needle; 313. a third bone needle; 314. a fourth bone needle; 32. a sleeve; 321. a tool insertion hole; 33. a first fixing rod; 331. a first mounting block; 34. a second fixing rod; 341. and a second mounting block.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. The following description of at least one exemplary embodiment is merely exemplary in nature and is in no way intended to limit the invention, its application, or uses. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
As shown in fig. 1 to 10, the bone fixing device according to the embodiment of the present invention includes a fixing plate holder 20, a pressing holder 30, and two fixing plates 10, wherein the fixing plate 10 includes a joint section 11, an osteotomy section 12, and a diaphysis section 13, which are sequentially connected, the two fixing plates 10 each extend vertically, a first bone connecting member is provided on the fixing plate 10, the fixing plate holder 20 includes a first fixing frame 21 and a second fixing frame 22, the first fixing plate 10 is detachably connected to the first fixing frame 21, the second fixing plate 10 is detachably connected to the second fixing frame 22, one end of the first fixing frame 21 is hinged to one end of the second fixing frame 22, the fixing plate holder 20 has a released state and a fixed state, the first fixing frame 21 and the second fixing frame 22 are spaced apart when the fixing plate holder 20 is in the released state, the first fixing frame 21 and the second fixing frame 22 are adjacent to each other, the pressing holder 30 extends vertically and is connected to the fixing plate holder 20, and the pressing holder 30 is telescopically provided on its axial direction with a shaft section 31 corresponding to the bone sections 11, 12, 13.
According to the bone fixing device provided by the embodiment, the bone fixing device comprises the fixing plate support 20, the pressurizing support 30 and the two fixing plates 10, before implantation, the two fixing plates 10 are connected with the first fixing frame 21 and the second fixing frame 22 respectively, the fixing plate support 20 is switched to a loosening state, the two fixing plates 10 are respectively arranged on two sides of a patient bone, then the fixing plate support 20 is switched to a fixing state, the two fixing plates 10 are attached to the patient bone, the reduction alignment of the joint bone segment, the bone segment and the diaphysis bone segment of the patient bone in the radial direction of the patient bone is realized, the joint bone segment, the bone segment and the diaphysis bone segment of the patient bone are connected to the pressurizing support 30 through the second bone connecting piece 31, the pressurizing support 30 is contracted, the joint bone segment, the bone segment and the diaphysis bone segment of the patient bone are close to each other, the joint bone segment, the bone segment and the diaphysis bone segment of the patient bone are aligned in the axial direction of the patient bone, the joint bone segment, the bone segment and the bone segment of the bone is provided with the pressurizing support 30 for the patient bone, finally the bone is connected to the patient bone by the first connecting piece 10 in the axial direction, and the patient bone is fixed by the first connecting piece 10 and the pressurizing plate is accurately fixed.
At present, the bone fixing device is mainly designed for traumatic fracture, the traumatic fracture does not cause serious damage to blood circulation, after the subsequent bone healing, the affected bone does not depend on the fixation of the fixing plate 10 any more, but the defects of the bone of the large sections of limbs have the condition of periosteum damage, and the bone tumor treatment often needs to strip soft tissues and cut off muscles, so that the blood circulation is seriously damaged, the defects of the bone of the large sections of the limbs need more reliable internal fixation, and the subsequent bone diseases possibly face treatment such as radiotherapy, and the affected bone depends on the supporting and fixing effects of the fixing plate 10 within the period of years after operation.
In this embodiment, after the affected bone is reset and aligned in the axial direction and the radial direction, the pressurizing support 30 provides temporary auxiliary pressurizing fixation in the axial direction for the affected bone, the first bone connecting piece is used for connecting the articular segment 11 and the articular bone segment, the first bone connecting piece is used for connecting the osteotomy segment 12 and the osteotomy segment, and the first bone connecting piece is used for connecting the diaphysis segment 13 and the diaphysis bone segment, so that the articular bone segment, the osteotomy segment and the diaphysis bone segment can still be pressurized and fixed in the axial direction after the pressurizing support 30 is separated from the affected bone, direct fusion between the osteotomy segment and the articular bone segment and between the osteotomy segment and the diaphysis bone segment is promoted, the healing of a patient is realized under the condition of minimal injury to the patient, and the long-term internal fixation failure of the fixing plate 10 is avoided.
In addition, the strength of the fixing plate 10 can be improved by adopting the integrally formed fixing plate 10, and the subsequent fracture of the fixing plate 10 or the fracture of the bone can be avoided.
As shown in fig. 1, the pressurizing bracket 30 includes a sleeve 32, a first fixing rod 33 and a second fixing rod 34, the first fixing rod 33 and the second fixing rod 34 are respectively located at two ends of the sleeve 32, the sleeve 32 is rotatably sleeved on the first fixing rod 33 and the second fixing rod 34, the first fixing rod 33 and the second fixing rod 34 are respectively in threaded connection with the sleeve 32, the first fixing rod 33 and the second fixing rod 34 have a pressurizing state close to each other and a pressure releasing state far away from each other, and the first fixing rod 33 and the second fixing rod 34 are respectively provided with a second bone connecting piece 31. After the bone is reset and aligned in the radial direction, the joint bone segment, the bone segment and the diaphysis bone segment of the bone are connected to the pressurizing bracket 30 through the second bone connecting piece 31, the sleeve 32 is rotated, and the first fixing rod 33 and the second fixing rod 34 are close to each other under the action of the threaded connection, so that the joint bone segment, the bone segment and the diaphysis bone segment of the bone are reset and aligned in the axial direction of the bone, the pressurizing fixation in the axial direction is provided for the bone, and the initial stability of the implanted fixing plate 10 is realized.
As shown in fig. 1, the bone fixation device includes two pressing brackets 30, the two pressing brackets 30 being respectively located at both ends of the fixation plate bracket 20, and the second fixing rod 34 of the first pressing bracket 30 and the first fixing rod 33 of the second pressing bracket 30 being respectively connected to the fixation plate bracket 20. The first pressurizing support 30 is utilized to provide axial pressurizing and fixing for the joint bone segment and the osteotomy bone segment of the patient bone, and the second pressurizing support 30 is utilized to provide axial pressurizing and fixing for the diaphyseal bone segment and the osteotomy bone segment of the patient bone, so that the pressurizing and fixing effect of the patient bone in the axial direction is improved by utilizing the two pressurizing supports 30.
As shown in fig. 1, the first fixing rod 33 of the first pressing bracket 30 is provided with a first mounting block 331, and the second bone connecting member 31 includes at least two first spicules 311 arranged on the first mounting block 331 at intervals in a lateral direction, the first spicules 311 extending in the lateral direction, the first spicules 311 corresponding to the joint segment 11. After the affected bone is in its radial realignment, the articular bone segment is coupled to the first compression bracket 30 using the first bone pin 311 for temporary fixation.
As shown in fig. 1, the second bone connecting member 31 further includes a second bone pin 312 provided on the second fixation rod 34 of the first compression bracket 30, the second bone pin 312 extending in a lateral direction, the second bone pin 312 corresponding to the osteotomy segment 12. After the bone is in its radial reduction alignment, the osteotomy segment is connected to the first compression bracket 30 by the second bone pin 312 for temporary fixation. So that after the reduction alignment of the affected bone in its radial direction, the first compression bracket 30 is contracted to reduce alignment of the affected bone joint and osteotomy segments in the axial direction of the affected bone, and the first compression bracket 30 is used to provide axial compression fixation of the affected bone joint and osteotomy segments.
As shown in fig. 1, the second fixing rod 34 of the second pressing bracket 30 is provided with a second mounting block 341, and the second bone connecting member 31 includes at least two third spicules 313 arranged on the second mounting block 341 at intervals in a lateral direction, the third spicules 313 extending in the lateral direction, the third spicules 313 corresponding to the diaphyseal section 13. After the affected bone is in its radial realignment, the diaphyseal bone fragment is connected to the second compression bracket 30 using a third bone pin 313, which serves as a temporary fixation.
As shown in fig. 4, the second bone connecting member 31 further includes a fourth bone pin 314 provided on the first fixing rod 33 of the second pressing bracket 30, the fourth bone pin 314 extending in a lateral direction, the fourth bone pin 314 corresponding to the osteotomy section 12. After the affected bone is in its radial realignment, the diaphyseal bone fragment is connected to the second compression bracket 30 using a third bone pin 313, which serves as a temporary fixation. So that after the reduction alignment of the bone in its radial direction, the second compression bracket 30 is contracted to reduce alignment of the diaphyseal and osteotomy segments of the bone in the axial direction of the bone, and the first compression bracket 30 is used to provide axial compression fixation of the diaphyseal and osteotomy segments of the bone.
As shown in fig. 1, a tool insertion hole 321 is provided on the outer side wall of the sleeve 32. By inserting the tool into the tool insertion hole 321, the sleeve 32 is conveniently rotated by the tool, the operation is facilitated, and the implantation efficiency of the fixing plate 10 is improved.
In the present embodiment, the cross-sectional shape of the sleeve 32 is polygonal. The sleeve 32 with the cross-sectional shape is convenient to rotate the sleeve 32 by a tool such as a wrench, is convenient to operate, and improves the implantation efficiency of the fixing plate 10.
As shown in fig. 2, the fixing plate bracket 20 further includes an adjusting stud 23 and an adjusting nut 24, wherein a first end of the adjusting stud 23 is fixedly connected with one of the first fixing frame 21 and the second fixing frame 22, and the adjusting nut 24 is disposed at a second end of the adjusting stud 23 and abuts against the other of the first fixing frame 21 and the second fixing frame 22. The first fixing frame 21 rotates relative to the second fixing frame 22 by utilizing the rotation of the adjusting screw cap 24 relative to the adjusting stud 23, so that the fixing plate bracket 20 is switched between a loosening state and a fixing state, the two fixing plates 10 are respectively arranged on two sides of the affected bone, the fixing plate bracket 20 is switched to the fixing state by rotating the adjusting screw cap 24, the two fixing plates 10 are attached to the affected bone, and the joint bone segment, the osteotomy bone segment and the diaphysis bone segment of the affected bone are reset and aligned in the radial direction of the affected bone.
In this embodiment, the first fixing frame 21 and the second fixing frame 22 are arc plates. By adopting the above arc plate structure, the first fixing frame 21 and the second fixing frame 22 can be conveniently wound around the circumference of the affected bone, and when the fixing plate bracket 20 is switched between the loosening state and the fixing state, the soft tissues around the affected bone are prevented from being damaged.
As shown in fig. 6, threaded holes 14 are formed in both fixing plates 10, a first screw 25 is formed in a first fixing frame 21, the first screw 25 penetrates through the threaded holes 14 and is connected with the first fixing plate 10, a second screw 26 is formed in a second fixing frame 22, and the second screw 26 penetrates through the threaded holes 14 and is connected with the second fixing plate 10. The first screw 25 and the second screw 26 are adopted to detachably connect the first fixing plate 10 with the first fixing frame 21, and the second fixing plate 10 is detachably connected with the second fixing frame 22, so that the device has the advantages of low cost, reliable connection and convenient operation.
In this embodiment, the shape of the first fixation plate 10 is adapted to the shape of the pressure side of the affected bone and the shape of the second fixation plate 10 is adapted to the shape of the tension side of the affected bone. According to the anatomical form design two fixed plates 10 of suffering from bone, switch fixed plate support 20 to fixed state, can make two fixed plates 10 and suffer from bone good subsides to under the extrusion effect of two fixed plates 10, so that the joint bone section of suffering from bone, osteotomy bone section and diaphysis bone section reset and align in the radial direction of suffering from bone, need not to bend repeatedly at fixed plate 10 in the art, avoid fixed plate 10 to produce metal fatigue and reduce operation duration.
Specifically, the shape of the two fixing plates 10 is designed by three-dimensionally modeling in accordance with the CT scan result of the patient before the operation, and obtaining anatomical features such as the length of the osteotomy segment of the patient bone and the relative position of the osteotomy segment on the patient bone.
Because the tumor size, the defect range of the affected bone, and the specific condition of the transplanted bone as the osteotomy segment of the patient are all different, the two fixing plates 10 are designed according to the shape of the affected bone in the present embodiment, compared with the conventional straight plate-shaped fixing plates, which has the following two advantages:
(1) The fixing plate 10 can be fixed by setting nails according to the specific condition of a patient, so that the fixing plate 10 is reliably connected with affected bones of a tumor area and is convenient to connect and fix, the fixing plate 10 is prevented from being installed and fixed by avoiding adjacent joint surfaces or joint cartilages, the postoperative initial stability of the fixing plate 10 is improved, and in addition, the fixing plate 10 is prevented from being fixedly connected by avoiding epiphyseal plates, so that the later bone growth and development of children patients are prevented from being influenced;
(2) The attachment of the fixing plate 10 and the affected bone is improved, loose gaps are avoided between the affected bone and the fixing plate 10, the fixing effect of the two fixing plates 10 on the affected bone is improved, stress concentration is avoided at the joint of the fixing plate 10 and the affected bone, the stimulation of tissues around the joint after operation is reduced, fatigue failure, breakage of the fixing plate 10 or complications such as effusion are avoided around the fixing plate 10, particularly interference to tissues such as tendon and ligament around a joint bone segment is avoided, and normal joint functions of a patient after operation are maintained.
In the present embodiment, the thickness of the first fixing plate 10 is smaller than the thickness of the second fixing plate 10, and the width of the first fixing plate 10 is smaller than the width of the second fixing plate 10. Since the thickness of the first fixing plate 10 is smaller than that of the second fixing plate 10, the width of the first fixing plate 10 is smaller than that of the second fixing plate 10, and the stress of the fixing plate 10 outside the affected bone is larger than that of the fixing plate 10 inside the affected bone, so that the structural strength of the two fixing plates 10 can be ensured.
Specifically, the thickness of the fixation plate 10 and the width of the fixation plate 10 are designed according to the height and weight of the patient, and the fixation plate 10 extends from the articular bone segment of the affected bone to the diaphyseal bone segment of the affected bone.
In this embodiment, the thickness of the articular segment 11 of the first fixation plate 10 is less than the thickness of the osteotomy segment 12 of the first fixation plate 10 and the thickness of the diaphysis segment 13 of the first fixation plate 10, and the thickness of the articular segment 11 of the second fixation plate 10 is less than the thickness of the osteotomy segment 12 of the second fixation plate 10 and the thickness of the diaphysis segment 13 of the second fixation plate 10. By adopting the structure, the soft tissues around the joint bone segments of the affected bone can be conveniently sutured, the operation difficulty and operation time are reduced, and the damage to patients is reduced.
As shown in fig. 1, at least two first mounting holes 15 are formed in the joint section 11 of the first fixing plate 10 at intervals in the transverse direction, at least two second mounting holes 16 are formed in the joint section 11 of the second fixing plate 10 at intervals in the transverse direction, and the first bone connecting member comprises a first fastening member and a second fastening member, the first fastening member penetrates through the first mounting holes 15 and is connected with the first fixing plate 10, and the second fastening member penetrates through the second mounting holes 16 and is connected with the second fixing plate 10. According to the structural characteristics of the joint bone segment, at least two first mounting holes 15 and at least two second mounting holes 16 which are transversely arranged at intervals are adopted, and the number of the first mounting holes 15 and the number of the second mounting holes 16 on the joint segment 11 are increased, so that the fixing effect of the fixing plate 10 and the joint bone segment is improved.
And, the first mounting hole 15 and the second mounting hole 16 avoid the epiphyseal plate, so that the later bone growth and development of the children patient are prevented from being influenced.
As shown in fig. 1, two first mounting holes 15 are vertically spaced on the osteotomy section 12 of the first fixing plate 10, two second mounting holes 16 are vertically spaced on the osteotomy section 12 of the second fixing plate 10, and the first bone connecting member includes a first fastener and a second fastener, the first fastener is disposed through the first mounting holes 15 and connected with the first fixing plate 10, and the second fastener is disposed through the second mounting holes 16 and connected with the second fixing plate 10. According to the structural characteristics of the osteotomy segment, at least two first mounting holes 15 and at least two second mounting holes 16 are vertically arranged at intervals, and the number of the first mounting holes 15 and the number of the second mounting holes 16 on the osteotomy segment 12 are increased, so that the fixing effect of the fixing plate 10 and the osteotomy segment is improved.
And, the axis of the first mounting hole 15 on the osteotomy section 12 of the first fixing plate 10 is perpendicular to the osteotomy section 12 of the first fixing plate 10, and the axis of the second mounting hole 16 on the osteotomy section 12 of the second fixing plate 10 is perpendicular to the osteotomy section 12 of the second fixing plate 10, so that the fixing effect of the fixing plate 10 and the osteotomy section is improved.
As shown in fig. 1, two first mounting holes 15 are vertically spaced on the backbone section 13 of the first fixing plate 10, two second mounting holes 16 are vertically spaced on the backbone section 13 of the second fixing plate 10, the number of the first mounting holes 15 on the backbone section 13 of the first fixing plate 10 is smaller than the number of the second mounting holes 16 on the backbone section 13 of the second fixing plate 10, and the first bone connecting member includes a first fastener and a second fastener, the first fastener is penetrated through the first mounting holes 15 and connected with the first fixing plate 10, and the second fastener is penetrated through the second mounting holes 16 and connected with the second fixing plate 10. According to the structural characteristics of the diaphysis bone segment, at least two first mounting holes 15 and at least two second mounting holes 16 are vertically arranged at intervals, and the number of the first mounting holes 15 and the number of the second mounting holes 16 on the diaphysis segment 13 are increased, so that the fixing effect of the fixing plate 10 and the diaphysis bone segment is improved.
And, the axis of the first mounting hole 15 on the backbone section 13 of the first fixing plate 10 is perpendicular to the backbone section 13 of the first fixing plate 10, and the axis of the second mounting hole 16 on the backbone section 13 of the second fixing plate 10 is perpendicular to the backbone section 13 of the second fixing plate 10, so that the fixing effect of the fixing plate 10 and the backbone bone section is improved.
Specifically, since the stress of the fixing plate 10 outside the affected bone is greater than that of the fixing plate 10 inside the affected bone, the number of the second mounting holes 16 on the diaphysis section 13 of the second fixing plate 10 is greater than that of the first mounting holes 15 on the diaphysis section 13 of the first fixing plate 10, so that the connection between the second fixing plate 10 and the outside of the affected bone is firmer, and the connection reliability of the two fixing plates 10 and the affected bone is ensured.
In this embodiment, four second mounting holes 16 are provided in the backbone section 13 of the second fixing plate 10, and three first mounting holes 15 are provided in the backbone section 13 of the first fixing plate 10, thereby achieving sufficient fixation of the affected bone and the fixing plate 10.
In the present embodiment, when the fixing plate bracket 20 is in a fixed state, the first mounting holes 15 on the first fixing plate 10 and the second mounting holes 16 on the second fixing plate 10 are staggered. Because the first mounting holes 15 and the second mounting holes 16 are staggered, interference of the first fastening piece and the second fastening piece is avoided.
Specifically, the diameters of the first mounting hole 15, the second mounting hole 16, the first fastener and the second fastener are selected according to the age and weight of the patient and the diameter of the affected bone, and the length of the first fastener and the length of the second fastener are selected so that the first fastener and the second fastener can pass through the cortex layer inside and the cortex layer outside the affected bone.
The first fastener and the second fastener are both prevented from avoiding the joint surface of the affected bone and the epiphyseal plate of the affected bone of the child, and the first fastener and the second fastener can be fixedly connected with the articular cartilage under the limit installation condition.
As shown in fig. 4, an osteotomy reference line 17 is provided on both the side wall of the first fixation plate 10 and the side wall of the second fixation plate 10. The use of the osteotomy reference line 17 as described above facilitates intraoperative position confirmation, ensuring that the implant position of the fixation plate 10 relative to the affected bone is consistent with the preoperative design position.
Specifically, two osteotomy reference lines 17 are marked on the side wall of the first fixing plate 10 and the side wall of the second fixing plate 10 by using a laser marking method, wherein the first osteotomy reference line 17 corresponds to the boundary between the articular bone segment and the diaphyseal bone segment of the patient bone, and the second osteotomy reference line 17 corresponds to the boundary between the osteotomy segment and the diaphyseal bone segment of the patient bone.
It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments in accordance with the present application. As used herein, the singular is also intended to include the plural unless the context clearly indicates otherwise, and furthermore, it is to be understood that the terms "comprises" and/or "comprising" when used in this specification are taken to specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof.
The relative arrangement of the components and steps, numerical expressions and numerical values set forth in these embodiments do not limit the scope of the present invention unless it is specifically stated otherwise. Meanwhile, it should be understood that the sizes of the respective parts shown in the drawings are not drawn in actual scale for convenience of description. Techniques, methods, and apparatus known to one of ordinary skill in the relevant art may not be discussed in detail, but are intended to be part of the specification where appropriate. In all examples shown and discussed herein, any specific values should be construed as merely illustrative, and not a limitation. Thus, other examples of the exemplary embodiments may have different values. It should be noted that: like reference numerals and letters denote like items in the following figures, and thus once an item is defined in one figure, no further discussion thereof is necessary in subsequent figures.
In the description of the present invention, it should be understood that the azimuth or positional relationships indicated by the azimuth terms such as "front, rear, upper, lower, left, right", "lateral, vertical, horizontal", and "top, bottom", etc., are generally based on the azimuth or positional relationships shown in the drawings, merely to facilitate description of the present invention and simplify the description, and these azimuth terms do not indicate and imply that the apparatus or elements referred to must have a specific azimuth or be constructed and operated in a specific azimuth, and thus should not be construed as limiting the scope of protection of the present invention; the orientation word "inner and outer" refers to inner and outer relative to the contour of the respective component itself.
Spatially relative terms, such as "above … …," "above … …," "upper surface at … …," "above," and the like, may be used herein for ease of description to describe one device or feature's spatial location relative to another device or feature as illustrated in the figures. It will be understood that the spatially relative terms are intended to encompass different orientations in use or operation in addition to the orientation depicted in the figures. For example, if the device in the figures is turned over, elements described as "above" or "over" other devices or structures would then be oriented "below" or "beneath" the other devices or structures. Thus, the exemplary term "above … …" may include both orientations of "above … …" and "below … …". The device may also be positioned in other different ways (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.
In addition, the terms "first", "second", etc. are used to define the components, and are only for convenience of distinguishing the corresponding components, and the terms have no special meaning unless otherwise stated, and therefore should not be construed as limiting the scope of the present invention.
The above description is only of the preferred embodiments of the present invention and is not intended to limit the present invention, but various modifications and variations can be made to the present invention by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (11)
1. A bone fixation device, the bone fixation device comprising:
the bone fixing device comprises two fixing plates (10), wherein each fixing plate (10) comprises a joint section (11), a bone cutting section (12) and a backbone section (13) which are sequentially connected, the two fixing plates (10) extend vertically, and a first bone connecting piece is arranged on each fixing plate (10);
the fixing plate bracket (20) comprises a first fixing bracket (21) and a second fixing bracket (22), wherein a first fixing plate (10) is detachably connected with the first fixing bracket (21), a second fixing plate (10) is detachably connected with the second fixing bracket (22), one end of the first fixing bracket (21) is hinged with one end of the second fixing bracket (22), the fixing plate bracket (20) is provided with a loosening state and a fixing state, when the fixing plate bracket (20) is in the loosening state, the first fixing bracket (21) and the second fixing bracket (22) are far away, and when the fixing plate bracket (20) is in the fixing state, the first fixing bracket (21) and the second fixing bracket (22) are close to each other;
the pressurizing support (30) extends vertically and is connected with the fixing plate support (20), the pressurizing support (30) is arranged in an axial telescopic mode, and second bone connecting pieces (31) corresponding to the joint section (11), the bone cutting section (12) and the diaphysis section (13) are arranged on the pressurizing support (30).
2. The bone fixation device according to claim 1, wherein the compression bracket (30) comprises a sleeve (32), a first fixation rod (33) and a second fixation rod (34), the first fixation rod (33) and the second fixation rod (34) are respectively located at two ends of the sleeve (32), the sleeve (32) is rotatably sleeved on the first fixation rod (33) and the second fixation rod (34), the first fixation rod (33) and the second fixation rod (34) are respectively in threaded connection with the sleeve (32), the first fixation rod (33) and the second fixation rod (34) have a compression state and a pressure relief state which are close to each other, and the first fixation rod (33) and the second fixation rod (34) are respectively provided with the second bone connecting piece (31).
3. Bone fixation device according to claim 2, characterized in that the bone fixation device comprises two compression brackets (30), the two compression brackets (30) being located at each end of the fixation plate bracket (20), the second fixation rod (34) of the first compression bracket (30) and the first fixation rod (33) of the second compression bracket (30) being connected to the fixation plate bracket (20), respectively.
4. The bone fixation device of claim 3 wherein,
a first mounting block (331) is arranged on a first fixing rod (33) of a first pressurizing bracket (30), the second bone connecting piece (31) comprises at least two first spicules (311) arranged on the first mounting block (331) at intervals along the transverse direction, the first spicules (311) extend along the transverse direction, and the first spicules (311) correspond to the joint section (11);
the second bone connection (31) further comprises a second bone pin (312) arranged on a second fixation rod (34) of the first compression bracket (30), the second bone pin (312) extending in a lateral direction, the second bone pin (312) corresponding to the osteotomy section (12);
a second mounting block (341) is arranged on a second fixing rod (34) of the second pressurizing bracket (30), the second bone connecting piece (31) comprises at least two third spicules (313) arranged on the second mounting block (341) at intervals along the transverse direction, the third spicules (313) extend along the transverse direction, and the third spicules (313) correspond to the diaphyseal section (13);
the second bone connection (31) further comprises a fourth bone pin (314) arranged on the first fixation rod (33) of the second compression bracket (30), the fourth bone pin (314) extending in a transverse direction, the fourth bone pin (314) corresponding to the osteotomy section (12).
5. The bone fixation device of claim 2 wherein the bone fixation device comprises a bone screw,
a tool jack (321) is arranged on the outer side wall of the sleeve (32); and/or the number of the groups of groups,
the cross-sectional shape of the sleeve (32) is polygonal.
6. The bone fixation device of any one of claims 1 to 5, wherein the fixation plate bracket (20) further comprises an adjustment stud (23) and an adjustment nut (24), a first end of the adjustment stud (23) being fixedly connected to one of the first mount (21) and the second mount (22), the adjustment nut (24) being disposed at a second end of the adjustment stud (23) and abutting the other of the first mount (21) and the second mount (22).
7. The bone fixation device of any one of claims 1 to 5, wherein,
the first fixing frame (21) and the second fixing frame (22) are arc-shaped plates; and/or the number of the groups of groups,
two all be provided with screw hole (14) on fixed plate (10), be provided with first screw (25) on first mount (21), first screw (25) are worn to locate screw hole (14) and first fixed plate (10) are connected, be provided with second screw (26) on second mount (22), second screw (26) are worn to locate screw hole (14) and second fixed plate (10) are connected.
8. The bone fixation device of any one of claims 1 to 5, wherein,
the shape of the first fixing plate (10) is matched with the shape of the pressure side of the affected bone, and the shape of the second fixing plate (10) is matched with the shape of the tension side of the affected bone; and/or the number of the groups of groups,
the thickness of the first fixing plate (10) is smaller than that of the second fixing plate (10), and the width of the first fixing plate (10) is smaller than that of the second fixing plate (10).
9. The bone fixation device of any one of claims 1 to 5, wherein,
the thickness of the joint section (11) of the first fixing plate (10) is smaller than the thickness of the osteotomy section (12) of the first fixing plate (10) and the thickness of the diaphysis section (13) of the first fixing plate (10), and the thickness of the joint section (11) of the second fixing plate (10) is smaller than the thickness of the osteotomy section (12) of the second fixing plate (10) and the thickness of the diaphysis section (13) of the second fixing plate (10); and/or the number of the groups of groups,
the first joint section (11) of fixed plate (10) is gone up along horizontal interval and is provided with two at least first mounting holes (15), and the second on the joint section (11) of fixed plate (10) along horizontal interval is provided with two at least second mounting holes (16), first skeleton connecting piece includes first fastener and second fastener, first fastener wears to locate first mounting hole (15) and be connected with first fixed plate (10), second fastener wears to locate second mounting hole (16) and be connected with second fixed plate (10).
10. The bone fixation device of any one of claims 1 to 5, wherein,
two first mounting holes (15) are formed in the osteotomy section (12) of the first fixing plate (10) at vertical intervals, two second mounting holes (16) are formed in the osteotomy section (12) of the second fixing plate (10) at vertical intervals, the first bone connecting piece comprises a first fastening piece and a second fastening piece, the first fastening piece penetrates through the first mounting holes (15) and is connected with the first fixing plate (10), and the second fastening piece penetrates through the second mounting holes (16) and is connected with the second fixing plate (10); and/or the number of the groups of groups,
two first mounting holes (15) are formed in the backbone section (13) of the first fixing plate (10) at vertical intervals, two second mounting holes (16) are formed in the backbone section (13) of the second fixing plate (10) at vertical intervals, the number of the first mounting holes (15) in the backbone section (13) of the first fixing plate (10) is smaller than that of the second mounting holes (16) in the backbone section (13) of the second fixing plate (10), and the first skeleton connecting piece comprises a first fastening piece and a second fastening piece, the first fastening piece penetrates through the first mounting holes (15) and is connected with the first fixing plate (10), and the second fastening piece penetrates through the second mounting holes (16) and is connected with the second fixing plate (10).
11. The bone fixation device of any one of claims 1 to 5, wherein,
when the fixing plate brackets (20) are in the fixing state, the first mounting holes (15) on the first fixing plate (10) and the second mounting holes (16) on the second fixing plate (10) are staggered;
and osteotomy reference lines (17) are arranged on the side wall of the first fixing plate (10) and the side wall of the second fixing plate (10).
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| CN202310112772.3A CN115998398B (en) | 2023-02-14 | 2023-02-14 | Bone fixing device |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202310112772.3A CN115998398B (en) | 2023-02-14 | 2023-02-14 | Bone fixing device |
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| CN115998398B CN115998398B (en) | 2023-07-18 |
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