CN219557466U - Femur neck osteotomy device - Google Patents
Femur neck osteotomy device Download PDFInfo
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- CN219557466U CN219557466U CN202320511010.6U CN202320511010U CN219557466U CN 219557466 U CN219557466 U CN 219557466U CN 202320511010 U CN202320511010 U CN 202320511010U CN 219557466 U CN219557466 U CN 219557466U
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A50/00—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE in human health protection, e.g. against extreme weather
- Y02A50/30—Against vector-borne diseases, e.g. mosquito-borne, fly-borne, tick-borne or waterborne diseases whose impact is exacerbated by climate change
Abstract
The present disclosure relates to a femoral neck osteotomy device, comprising: a fixing plate having a plurality of fixing holes for passing the k-wire therethrough, the fixing plate being fixed at an intersubular crest position by the k-wire; the swing saw limiting plate is connected with one side edge of the fixed plate, an included angle is formed between the swing saw limiting plate and the fixed plate, the swing saw limiting plate is provided with a swing saw through groove penetrating along the width direction of the swing saw limiting plate, and the swing saw through groove is adapted to the swing saw blade and used for allowing the swing saw blade to penetrate and limiting the swing saw blade. The device has the advantages of simple structure and practicality, can assist in completing the operation of bone cutting of the femoral neck, can effectively limit the transverse swing range of the swing saw blade, and reduces or avoids the risk of accidentally injuring other tissues of the swing saw blade.
Description
Technical Field
The disclosure relates to the technical field of medical instruments, in particular to a femur neck osteotomy device.
Background
The total hip arthroplasty is a common operation method for treating femoral neck fracture and various end-stage joint diseases, the bone structure is treated in the operation, the first step is generally femoral neck osteotomy, and the residual length of the femoral neck after osteotomy and the osteotomy range have great influence on the installation and postoperative functions of the prosthesis.
Most hospitals still operate with bare hands by virtue of experience of operators in clinical practice at present, which has higher requirements on experience annual resources of the operators, particularly in the step of cutting bones of femoral necks, most operators still cut bones by virtue of experience bare hands, although the operation can be planned by referring to image results before the operation, the electric knife can be used for marking an osteotomy line on the femoral necks, as the swing saw for osteotomy can swing severely, the osteotomy cannot be performed according to the marked osteotomy line, and the osteotomy deviation is easy to occur, on the other hand, the severe swing of the swing saw can also injure important structures such as the greater trochanter, gluteus medius muscle and the like by mistake, and once the structures are damaged, serious consequences such as instability, dislocation and the like of the subsequent prosthesis can be caused.
Based on this, it is found in the prior art that, as disclosed in patent [ CN 110584741a ], a 3D printing individuation femoral neck osteotomy guide plate comprises: the femur neck fitting part is suitable for riding on the femur neck, and the lower surface of the femur neck fitting part is suitable for fitting with the surface of the femur neck; the guide post is arranged on the upper surface of the femur neck fitting part and is suitable for driving a Kirschner wire so as to fix the osteotomy guide plate on the femur neck; and a cutting guide surface formed by extending vertically upward from the anterior side of the femoral neck abutment portion, the cutting guide surface being adapted to abut the saw blade so that the saw blade cuts the femoral neck downwardly along the cutting guide surface. According to the scheme, the osteotomy guide plate matched with the patient is constructed through the 3D printing technology based on the three-dimensional reconstruction of the CT data of the patient before operation, the osteotomy operation can be assisted, but the guide plate is a special guide plate, three-dimensional reconstruction and 3D printing are required before operation of each patient, the operation is inconvenient, the universality is poor, the cost is high, and the economic burden of the patient can be increased.
Further searching for a generic osteotomy aid, as disclosed in patent [ CN 216908047U ], a femoral neck osteotomy device comprising a positioning mount, the device further comprising: the fastening component is arranged on the positioning mounting seat and used for fixing the positioning mounting seat and the femoral neck; the positioning rotating seat is arranged on one side of the positioning installation seat and can be rotatably arranged relative to the positioning installation seat; and cutting assembly, cutting assembly passes through lift adjustment subassembly connection the location rotates the seat, and the device can be general in the osteotomy process of different patients, but the device structure is complicated, easily shelters from the operation field of operation person, and also does not accord with the operation habit of most operation person, and the suitability is relatively poor, and on the other hand, its osteotomy guide surface is open, can not restrict the lateral oscillation scope of pendulum saw blade, has increased pendulum saw blade aversion misdamage greater trochanter and gluteus medius's risk, still can not assist well to carry out the femur neck osteotomy.
Disclosure of Invention
In order to solve the problems in the prior art, the disclosure aims to provide a femoral neck osteotomy device. The device has the advantages of simple structure and practicality, can assist in completing the operation of bone cutting of the femoral neck, can effectively limit the transverse swing range of the swing saw blade, and reduces or avoids the risk of accidentally injuring other tissues of the swing saw blade.
The utility model provides a femur neck cuts bone device, includes:
a fixation plate having a plurality of fixation holes for the k-wire to pass through, the fixation plate being fixed at a trochanteric crest position behind the hip joint by the k-wire;
the swing saw limiting plate is connected with one side edge of the fixed plate, an included angle is formed between the swing saw limiting plate and the fixed plate, the swing saw limiting plate is provided with a swing saw through groove penetrating along the width direction of the swing saw limiting plate, and the swing saw through groove is adapted to the swing saw blade and used for allowing the swing saw blade to penetrate and limiting the transverse swing range of the swing saw blade.
Preferably, a soft layer with elasticity is covered on one surface of the fixing plate facing the rotor crest.
Preferably, the side of the soft layer facing the intershaft ridge is frosted
Preferably, an included angle between the swing saw limiting plate and the fixed plate is 60-120 degrees.
Preferably, the side edge of the swing saw limiting plate far away from the fixed plate is provided with a plurality of saw teeth which are arranged at equal intervals along the length direction of the swing saw limiting plate.
Preferably, the femoral neck osteotomy device further comprises:
the damping connecting shaft comprises a fixing piece and a rotating piece which can rotate relatively, the fixing piece is connected with the fixing plate, and the rotating piece is connected with the swing saw limiting plate.
Preferably, the number of the fixing holes is eight, wherein four fixing holes are arranged at one end of the fixing plate, which is close to the small rotor, two fixing holes are positioned at the other end of the fixing plate, and the other two fixing holes are positioned at the edge of one side, which is far away from the swing saw limiting plate, of the fixing plate.
Preferably, the length of the swing saw through groove is 32-56 mm, and the size of the fixing plate is matched with the size of the swing saw limiting plate.
Preferably, the length of the through groove of the pendulum saw is 56mm, a plurality of necking modules are sequentially and detachably sleeved in the through groove of the pendulum saw, each necking module is provided with a necking groove for sleeving the next necking module, the length of the necking groove of the necking module positioned at the outermost side is 54mm, the difference of the lengths of the necking grooves between every two adjacent necking modules is 2mm, and the length of the necking groove of the necking module positioned at the innermost side is 32mm.
Preferably, the necking module positioned at the outermost side is in buckling connection with the swing saw through groove, and two adjacent necking modules are in buckling connection.
The utility model discloses a femur neck osteotomy device, its advantage lies in, this femur neck osteotomy device of disclosure, the angle of accessible adjustment fixed plate and pendulum saw limiting plate, with pendulum saw limiting plate correspond to the anticipated osteotomy position of person of art and perpendicular to osteotomy neck, then adopt the kirschner wire to fix the fixed plate on the intertrochanter ridge, because pendulum saw limiting plate has the pendulum saw logical groove of being adapted to pendulum saw piece, when pendulum saw piece inserts from pendulum saw logical groove and cuts the bone operation, the lateral wall that the accessible pendulum saw logical groove is spacing pendulum saw piece transversely swings the scope, reduce or avoid pendulum saw piece aversion to lead to the risk of misinjuring other tissues such as major trochanter, gluteus medius muscle, improve the security of cutting in-process. The device has the advantages of simple integral structure, convenient operation, good universality, practicality and capability of well assisting the operation of bone cutting of the femoral neck.
Drawings
Fig. 1 is a schematic view of a femoral neck osteotomy device according to this embodiment;
FIG. 2 is an exploded view of FIG. 1;
fig. 3 is a schematic structural view of the fixing plate according to the present embodiment;
fig. 4 is a schematic structural view of the swing saw limiting plate according to the embodiment;
fig. 5 is a schematic structural view of a femoral neck osteotomy device with a necking module according to this embodiment.
Reference numerals illustrate: the device comprises a 1-fixing plate, a 11-fixing hole, a 12-soft layer, a 2-swing saw limiting plate, a 21-swing saw through groove, 22-saw teeth, a 3-damping connecting shaft, a 4-necking module and 41-necking grooves.
Detailed Description
As shown in fig. 1-4, a femoral neck osteotomy device of the present disclosure, comprising:
the fixing plate 1 is a long plate structure made of metal material, and is provided with a plurality of fixing holes 11 penetrating along the thickness direction of the fixing plate 1, wherein the inner diameter of the fixing holes 11 is adapted to the outer diameter of the kirschner wire, and is used for the kirschner wire to penetrate so as to fix the fixing plate 1 at the inter-rotor ridge position, and the fixing plate generally covers on an inter-rotor line between a large rotor and a small rotor.
The swing saw limiting plate 2 is connected with one side edge of the fixed plate 1, an included angle with a certain angle is formed between the swing saw limiting plate 2 and the plate surface of the fixed plate 1, the swing saw limiting plate 2 and the fixed plate 1 are designed to be an included angle with a proper size, the swing saw limiting plate 2 can be attached to an osteotomy line expected by a worker and perpendicular to an osteotomy neck in specific fixation, and then the fixed plate 1 is fixed firmly by using a Kirschner wire.
The swing saw limiting plate 2 is provided with a swing saw through groove 21 penetrating along the width direction, the swing saw through groove 21 extends from one side edge of the swing saw limiting plate 2 connected with the fixed plate 1 to the other side edge until penetrating the swing saw limiting plate 2, the swing saw through groove 21 through which a swing saw blade can penetrate is formed, the length of the swing saw through groove 21 is slightly larger than the width of the swing saw blade, so that a swing saw blade can be inserted into the swing saw through groove 21, meanwhile, certain gaps can be formed between the two side walls of the swing saw through groove 21 and the swing saw blade, normal swing of the swing saw blade cannot be interfered, meanwhile, the swing saw blade can be limited when the swing saw blade is subjected to larger transverse swing, and large-amplitude displacement of the swing saw blade in the bone cutting process is avoided.
Further, in this embodiment, the side of the fixing plate 1 facing the femoral neck, that is, the back surface of the fixing plate 1 is covered with the soft layer 12 with elasticity, in general, the dimensions of the fixing plate 1 and the swing saw limiting plate 2 are designed according to popular anatomical data, so that the fixing plate 1 and the swing saw limiting plate 2 can be adapted to the femoral neck positions of most patients, but since the positions of the trochanter line and the like are not completely flat, and the height difference between the trochanter line plane and the femoral neck plane of different patients is slightly different, the back surface of the rigid fixing plate 1 cannot be well attached to the above positions, therefore, in this embodiment, by covering the back surface of the fixing plate 1 with a soft layer 12 with a certain thickness and having elasticity, the soft layer 12 can be a rubber layer or a silica gel layer, the soft layer 12 can deform under pressure, and when the fixing plate 1 is fixed at the trochanter line and the femoral neck position, the saw can be properly applied to the fixing plate 1, so that the saw can be attached to the trochanter line and the femoral neck plane of different from each other, the fixing plate can be more firmly attached to the femoral neck position, and the fixing plate 2 can be more flexibly adjusted to the position, and the fixing device can be more flexibly attached to the femoral neck position and the femoral neck has no need to be more appropriate.
Further, in this embodiment, the surface of the soft layer 12 facing the femoral neck is a frosted surface, and the frosted surface can increase the relative friction between the fixing plate 1 and the tissue structure, further improve the firmness of fixing the device, and reduce the possibility of accidental displacement of the device during the operation.
Further, in this embodiment, the included angle between the swing saw limiting plate 2 and the fixing plate 1 is 60 ° to 120 °, in a specific embodiment, a femoral neck osteotomy device with multiple specifications may be provided, and the included angles between the swing saw limiting plate 2 and the fixing plate 1 between femoral neck osteotomies with different specifications are different, for example, may be set to 60 °, 90 ° and 120 °, and the femoral neck osteotomies with an adapted angle are selected during actual operation, so that after the swing saw limiting plate 2 is attached to an osteotomy line expected by an operator and is perpendicular to the femoral neck, the fixing plate 1 may be fixed by a kirschner wire, and then a swing saw blade is inserted to perform osteotomies at this time, so that a safe and accurate osteotomies range may be obtained.
Further, in this embodiment, the side edge of the swing saw limiting plate 2 away from the fixed plate 1 is provided with a plurality of saw teeth 22 arranged at equal intervals along the length direction of the swing saw limiting plate 2, and the saw teeth 22 can be embedded into the femoral neck, so that the installation of the swing saw limiting plate 2 is more stable and firm, and is not easy to shift.
Further, in this embodiment, the femoral neck osteotomy device further includes:
the damping connecting shaft 3 comprises a fixing piece and a rotating piece which can rotate relatively, and the fixing piece and the rotating piece have larger relative damping, so that the rotating piece can keep static relative to the fixing piece when not subjected to larger external force. The mounting is connected with fixed plate 1, the rotating member is connected with the pendulum saw limiting plate 2, so that form damping switching structure between mounting and the rotating member, can drive pendulum saw limiting plate 2 and rotate for fixed plate 1 when applying great external force to pendulum saw limiting plate 2, pendulum saw limiting plate 2 can keep static for fixed plate 1 when not applying great external force, pendulum saw limiting plate 2 rotatable structure can be after attaching pendulum saw limiting plate 2 on the bone cutting line that the person expects and perpendicular to the femur neck, adjust the angle between fixed plate 1 and pendulum saw limiting plate 2, make fixed plate 1 can be convenient for laminate fixedly, so that the operation process is more nimble.
Further, in this embodiment, the number of the fixing holes 11 is eight, wherein four fixing holes 11 are arranged at one end of the fixing plate 1 close to the lesser trochanter, two fixing holes 11 are located at the other end of the fixing plate 1, and the other two fixing holes 11 are located at the edge of one side of the fixing plate 1 away from the swing saw limiting plate 2, and the fixing holes 11 are distributed in the above-mentioned scheme, so that the fixing plate 1 is firmly and firmly fixed, and is not easy to loosen when the swing saw limiting plate 2 is rotated.
Further, in this embodiment, the length of the through groove 21 of the swing saw is 32 mm-56 mm, the size of the fixing plate 1 is adapted to the size of the swing saw limiting plate 2, in general, the width of the swing saw blade has various different specifications to adapt to different operation requirements, according to the length of the femur neck osteotomy line and the size of the swing saw blade, in this embodiment, the length of the through groove 21 of the swing saw is designed to be 32 mm-56 mm, in practical application, one swing saw limiting plate 2 can be manufactured every 2mm, the swing saw limiting plates 2 of thirteen specifications are manufactured altogether, each swing saw limiting plate 2 has a swing saw through groove 21 of one size, the size of the fixing plate 1 is adapted to the size of the swing saw limiting plate 2, and during operation, the swing saw limiting plate 2 of suitable specification can be selected to assist osteotomy according to the length of the femur neck osteotomy line and the size of the swing saw blade. The size design accords with the size of a conventional bone cutting swing saw blade, and the swing saw blade can be effectively limited.
Further, in this embodiment, as shown in fig. 5, the length of the through groove 21 of the swing saw is 56mm, a plurality of necking modules 4 are detachably sleeved in the through groove 21 of the swing saw in sequence, the necking modules 4 are of hollow plate-shaped structures similar to the structures of the swing saw limiting plates 2, each necking module 4 is provided with a necking groove 41 penetrating in the width direction and used for sleeving the next necking module 4, that is, the size of the necking groove 41 is slightly larger than the outer size of the next necking module 4, the length of the necking groove 41 of the necking module 4 positioned at the outermost side, that is, the necking groove 41 of the necking module 4 contacted with the through groove 21 of the swing saw is 54mm, the length of the necking groove 41 of the next necking module 4 sleeved in the necking module 4 is 52mm, and the difference of the lengths of the necking grooves 41 between every two adjacent necking modules 4 is 2mm, and the length of the necking groove 41 of the necking module 4 positioned at the innermost side is 32mm.
The above structure that establishes is overlapped to a plurality of necking down module 4 can be according to the length of femur neck osteotomy line and pendulum saw piece size, overlaps on pendulum saw limiting plate 2 and establishes the necking down module 4 of corresponding size to the adaptation is in pendulum saw piece, and need not to make this device of a plurality of different specifications, can save device cost.
Further, in this embodiment, the necking module 4 located at the outermost side is connected with the through groove 21 of the swing saw, specifically, the outer side wall of the necking module 4 is provided with a male buckle, the through groove 21 of the swing saw is provided with an adapted female buckle at a position corresponding to the male buckle, and the necking module 4 is slidingly inserted into the through groove 21 of the swing saw until the male buckle is aligned with the female buckle, and the male buckle is buckled to detachably connect the necking module 4 with the through groove 21 of the swing saw, and two adjacent necking modules 4 are also buckled and connected by the male buckle and the female buckle structures, which are not repeated herein. The buckling connection structure has the advantages of simple structure and convenience in disassembly and assembly.
The femoral neck osteotomy device with the proper size of the pendulum saw limiting plate 2 is selected according to the length of the femoral neck osteotomy line and the size of the pendulum saw blade in the osteotomy, the pendulum saw limiting plate 2 is attached to the expected osteotomy line of the operator and is perpendicular to the femoral neck, the position of the fixing plate 1 is adjusted, the fixing plate 1 is pressed to deform the soft layer 12, the fixing plate 1 is integrally attached to the intertrochanteric crest position, and the kirschner wire is fixed through the fixing hole 11. When performing osteotomy operation, pass the pendulum saw piece through pendulum saw through groove 21, if pendulum saw piece is because of violent shake and when shifting to the outside, can be blocked by pendulum saw through groove 21's lateral wall, carry out spacingly to the pendulum saw piece through pendulum saw through groove 21, thereby avoid cutting the bone in-process pendulum saw piece and take place to shift by a wide margin and accidentally injure other tissues.
According to the femoral neck osteotomy device disclosed by the disclosure, the angle of the fixing plate 1 and the angle of the swing saw limiting plate 2 can be adjusted, the swing saw limiting plate 2 corresponds to the expected osteotomy position of a patient and is perpendicular to the osteotomy neck, then the Kirschner wire is adopted to fix the fixing plate 1 on the intertrochanter ridge, as the swing saw limiting plate 2 is provided with the swing saw through groove 21 which is adaptive to the swing saw blade, when the swing saw blade is inserted into the osteotomy operation from the swing saw through groove 21, the lateral swing range of the swing saw blade can be limited through the side wall of the swing saw through groove 21, the risk of accidentally injuring other tissues such as the greater trochanter, the gluteus medius muscle and the like caused by the displacement of the swing saw blade is reduced or avoided, and the safety in the osteotomy operation process is improved. The device has the advantages of simple integral structure, convenient operation, good universality, practicality and capability of well assisting the operation of bone cutting of the femoral neck.
In the description of the present disclosure, 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 disclosure and simplify the description, and without being otherwise described, these azimuth terms do not indicate and imply that the apparatus or elements referred to must have a specific azimuth or be configured and operated in a specific azimuth, and thus should not be construed as limiting the scope of protection of the present disclosure.
It will be apparent to those skilled in the art from this disclosure that various other changes and modifications can be made which are within the scope of the utility model as defined in the claims.
Claims (10)
1. A femoral neck osteotomy device, comprising:
a fixation plate having a plurality of fixation holes for the k-wire to pass through, the fixation plate being fixed at a trochanteric crest position behind the hip joint by the k-wire;
the swing saw limiting plate is connected with one side edge of the fixed plate, an included angle is formed between the swing saw limiting plate and the fixed plate, the swing saw limiting plate is provided with a swing saw through groove penetrating along the width direction of the swing saw limiting plate, and the swing saw through groove is adapted to the swing saw blade and used for allowing the swing saw blade to penetrate and limiting the transverse swing range of the swing saw blade.
2. The femoral neck osteotomy device of claim 1, wherein the fixation plate is covered with a flexible layer on a side facing the intertrochanteric ridge.
3. The femoral neck osteotomy device of claim 2, wherein a side of the soft layer facing the intertrochanteric ridge is frosted.
4. The femoral neck osteotomy device of claim 1, wherein the included angle between the wobble plate and the fixation plate is 60 ° to 120 °.
5. The femoral neck osteotomy device of claim 4, wherein a side edge of the wobble plate distal from the fixation plate has a plurality of serrations equally spaced along a length of the wobble plate.
6. The femoral neck osteotomy device of claim 5, further comprising:
the damping connecting shaft comprises a fixing piece and a rotating piece which can rotate relatively, the fixing piece is connected with the fixing plate, and the rotating piece is connected with the swing saw limiting plate.
7. The femoral neck osteotomy device of claim 6, wherein the number of fixation holes is eight, wherein four fixation holes are arranged at one end of the fixation plate near the lesser trochanter, two fixation holes are at the other end of the fixation plate, and two other fixation holes are at a side edge of the fixation plate away from the swing saw stop plate.
8. The femoral neck osteotomy device of claim 1, wherein the length of the saw through slot is 32 mm-56 mm, and the size of the fixation plate is adapted to the size of the saw stop plate.
9. The femoral neck osteotomy device of claim 1, wherein the length of the through slot of the pendulum saw is 56mm, a plurality of necking modules are sequentially and detachably sleeved in the through slot of the pendulum saw, each necking module is provided with a necking slot for sleeving the next necking module, the length of the necking slot of the necking module positioned at the outermost side is 54mm, the difference of the lengths of the necking slots between every two adjacent necking modules is 2mm, and the length of the necking slot of the necking module positioned at the innermost side is 32mm.
10. The femoral neck osteotomy device of claim 9, wherein an outermost necking module is snap-fit to the through slot of the pendulum saw, and wherein adjacent necking modules are snap-fit to each other.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320511010.6U CN219557466U (en) | 2023-03-16 | 2023-03-16 | Femur neck osteotomy device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320511010.6U CN219557466U (en) | 2023-03-16 | 2023-03-16 | Femur neck osteotomy device |
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| Publication Number | Publication Date |
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| CN219557466U true CN219557466U (en) | 2023-08-22 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202320511010.6U Active CN219557466U (en) | 2023-03-16 | 2023-03-16 | Femur neck osteotomy device |
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| CN (1) | CN219557466U (en) |
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- 2023-03-16 CN CN202320511010.6U patent/CN219557466U/en active Active
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