CN108784821B - Personalized customization 3D printing osteotomy guide plate and use method thereof - Google Patents
Personalized customization 3D printing osteotomy guide plate and use method thereof Download PDFInfo
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- CN108784821B CN108784821B CN201810603257.4A CN201810603257A CN108784821B CN 108784821 B CN108784821 B CN 108784821B CN 201810603257 A CN201810603257 A CN 201810603257A CN 108784821 B CN108784821 B CN 108784821B
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- 238000000034 method Methods 0.000 title abstract description 22
- 238000010146 3D printing Methods 0.000 title abstract description 18
- 210000000988 bone and bone Anatomy 0.000 claims abstract description 40
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 36
- 239000010959 steel Substances 0.000 claims abstract description 36
- 238000005520 cutting process Methods 0.000 claims description 26
- 238000004519 manufacturing process Methods 0.000 abstract description 4
- 208000035965 Postoperative Complications Diseases 0.000 abstract description 2
- 238000001356 surgical procedure Methods 0.000 abstract description 2
- 210000002303 tibia Anatomy 0.000 description 23
- 210000000689 upper leg Anatomy 0.000 description 23
- 238000002591 computed tomography Methods 0.000 description 7
- 210000003141 lower extremity Anatomy 0.000 description 7
- 210000000845 cartilage Anatomy 0.000 description 5
- 230000000694 effects Effects 0.000 description 5
- 210000004872 soft tissue Anatomy 0.000 description 5
- 241001227561 Valgus Species 0.000 description 4
- 210000001188 articular cartilage Anatomy 0.000 description 4
- 210000000629 knee joint Anatomy 0.000 description 4
- 208000003241 Fat Embolism Diseases 0.000 description 3
- 208000032843 Hemorrhage Diseases 0.000 description 3
- 208000034158 bleeding Diseases 0.000 description 3
- 230000000740 bleeding effect Effects 0.000 description 3
- 210000003041 ligament Anatomy 0.000 description 3
- 238000002595 magnetic resonance imaging Methods 0.000 description 3
- 230000005499 meniscus Effects 0.000 description 3
- 208000010392 Bone Fractures Diseases 0.000 description 2
- 206010017076 Fracture Diseases 0.000 description 2
- 208000008558 Osteophyte Diseases 0.000 description 2
- 238000011882 arthroplasty Methods 0.000 description 2
- 210000004439 collateral ligament Anatomy 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 208000015181 infectious disease Diseases 0.000 description 2
- 210000003127 knee Anatomy 0.000 description 2
- 230000000399 orthopedic effect Effects 0.000 description 2
- 238000007639 printing Methods 0.000 description 2
- 230000002035 prolonged effect Effects 0.000 description 2
- 206010020751 Hypersensitivity Diseases 0.000 description 1
- 239000004677 Nylon Substances 0.000 description 1
- 208000002847 Surgical Wound Diseases 0.000 description 1
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Classifications
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/56—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor
- A61B17/58—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor for osteosynthesis, e.g. bone plates, screws, setting implements or the like
- A61B17/88—Osteosynthesis instruments; Methods or means for implanting or extracting internal or external fixation devices
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/56—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor
- A61B17/58—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor for osteosynthesis, e.g. bone plates, screws, setting implements or the like
- A61B17/88—Osteosynthesis instruments; Methods or means for implanting or extracting internal or external fixation devices
- A61B17/90—Guides therefor
Abstract
The invention discloses a personalized customized 3D printing osteotomy guide plate, which comprises a fixing plate and an osteotomy plate, wherein a fixing groove is formed in one side, which is attached to a bone surface, of the fixing plate, an inner groove surface of the fixing groove is attached to the bone surface, a positioning hole is formed in the fixing plate, the positioning hole comprises a vertical positioning hole at the bottom of the fixing groove and an inclined positioning hole at the side surface of the fixing groove, an osteotomy opening is reserved in the osteotomy plate, the orientation of the osteotomy opening is the same as the notch orientation of the fixing groove, two limiting steel plates are arranged in the osteotomy opening, and two positioning tentacles perpendicular to the cross section of the osteotomy plate are arranged on the outer side of the osteotomy plate. The invention also discloses a use method of the 3D printing osteotomy guide plate capable of being customized in a personalized way. The product obtained by the invention has the advantages of convenient production and manufacture, high accuracy and low cost, reduces the occurrence probability of postoperative complications, improves the success rate of surgery, and prolongs the service life of plants in normal use of patients.
Description
Technical Field
The invention relates to the technical field of orthopedic surgical instruments, in particular to a personalized 3D printing osteotomy guide plate and a use method thereof.
Background
"custom-made knee arthroplasty specifically for the patient" is a new technique that uses a computer to assist in pre-operative planning to provide a surgical introducer whose function may be partially or fully substituted for a conventional instrument system. Knee arthroplasty, which "customizes instruments specifically for the patient" (Patient Specific Instruments, PSI), involves image-based preoperative planning, followed by template creation to conform to the surface geometry of the patient's skeletal structure. The template is designed to convert the preoperative plan into an intraoperative representation. These fabrication machines range from Computer Numerical Control (CNC) to more sophisticated rapid prototyping (rapid prototyping, RP) technologies, which act as a three-dimensional printer to print three-dimensional computer-aided designs into objects. A pre-operative Computed Tomography (CT) or Magnetic Resonance Imaging (MRI) scan is entered into a special software system that uses three-dimensional data of TKA implants. Surgical planning and virtual surgery is performed first on a computer and then on the patient. This includes sizing, aligning the position, cutting the bone, determining the optimal implantation location, etc. Two virtual templates are designed and converted into surgical guides using rapid prototyping techniques. The information gathered in surgical guide devices has made these devices custom made for the patient, which the surgeon can use as a cutting guide or cutting template.
Thus, TKA is not required for conventional intramedullary or extramedullary surgical guide devices. This revolutionary technique has potential advantages over conventional systems because it improves short term recovery, reduces surgical time and risk of bleeding and fat embolism, and maintains accuracy. This is particularly useful for cases of extra-articular deformations, especially in elderly patients. This technique is intermediate between conventional techniques and more complex techniques like navigation robots.
However, the existing cutting guide device or cutting template has serious defects in structural design, firstly, the existing cutting template is unreasonable in structure and large in size, so that surgical incision is large, and the probability of excessive bleeding, infection, fat embolism, fracture and the like is high. Secondly, the locating hole of current cutting template is unreasonable, as the cutting template that the name that the clinical military journal 10, volume 44, 10 published in 10 of the year of the journal of the application of the invention is disclosed in the article of "CT combines the two low limbs load bit line X-ray image to make 3D print individualized mould auxiliary knee joint replacement clinical study", wherein the locating hole includes two locating holes of osteotomy department and two locating holes on the locating feeler, because osteotomy department and locating feeler are mutually perpendicular, therefore when carrying out the location, four locating holes all need to install the location spike, but the action of the osteotomy apparatus will be interfered to the location spike of locating feeler when the osteotomy is carried out to the osteotomy mouth, need to pull out two location spikes on the locating feeler, can carry out the osteotomy operation, the operation time is longer. The operation method is complex, and the errors are increased when the two positioning steel nails are removed after positioning, so that the deviation of the force lines of the lower limbs after the operation is caused, the service life of the built-in device after the operation is seriously influenced, and the pain and the carryover of a patient can be brought. In addition, because the orthopedic surgery has the requirements of allergy prevention, no toxicity and no stimulation, the existing cutting template is generally made of nylon and resin materials, so that the cutting template is easily cut by an osteotomy tool, when the cutting template is damaged, the positioning function is meaningless, and a doctor can only perform osteotomy operation by means of observation and feel, so that the surgical effect is seriously influenced, and the serious condition can lead to surgical failure.
Disclosure of Invention
Aiming at the defects in the background technology, the invention provides a personalized customization 3D printing osteotomy guide plate and a use method thereof, which solve the technical problems of unreasonable structure, large size, poor positioning effect and uncontrollable osteotomy precision of the existing osteotomy mould.
The technical scheme of the invention is realized as follows: the utility model provides a personalized customization D prints and cuts bone conduction board, includes the fixed plate and cuts the bone board, and the fixed slot has been seted up to one side that the fixed plate pasted mutually with the bone face, and the inside groove face of fixed slot is laminated mutually with the bone face, has seted up the locating hole on the fixed plate, and the locating hole includes the vertical locating hole of fixed slot bottom and the slope locating hole of fixed slot side, it has the osteotomy mouth to cut to reserve on the bone board, and the orientation of osteotomy mouth is the same with the notch orientation of fixed slot, the extension line of osteotomy mouth is separated with the extension line of slope locating hole, installs two spacing steel sheets in the osteotomy mouth, and the outside of osteotomy board is provided with two and cuts the perpendicular location tentacles of cross section looks of bone board.
The bone cutting opening is a rectangular notch, steel plate clamping grooves are formed in the left end and the right end of the rectangular notch, the steel plate clamping grooves are cuboid, the thickness of each steel plate clamping groove is larger than that of the bone cutting opening, the cross sections of the bone cutting opening and the steel plate clamping grooves form an I shape, the limiting steel plates are in plug-in fit with the steel plate clamping grooves, the cross sections of the limiting steel plates are U-shaped, and the two U-shaped limiting steel plates are clamped in the bone cutting opening back to back.
The vertical locating holes comprise a first vertical locating hole and a second vertical locating hole, the distance between the first vertical locating hole and the adjacent side edge of the first vertical locating hole is M, the distance between the second vertical locating hole and the adjacent side edge of the second vertical locating hole is N, the distance between the first vertical locating hole and the second vertical locating hole is O, and M, N, O are equal.
The inclined locating holes comprise first inclined locating holes and second inclined locating holes, the first inclined locating holes are formed in one side groove wall of the fixed groove, the second inclined locating holes are formed in the other side groove wall of the fixed groove, and the first inclined locating holes and the second inclined locating holes are bilaterally symmetrical.
The center line of the inclined positioning hole and the center line of the vertical positioning hole are positioned in the same plane.
The application method of the personalized custom D printing osteotomy guide plate comprises the steps of importing CT scanning data of a patient into a computer, performing three-dimensional reconstruction by applying computer three-dimensional reconstruction software, measuring the rotation angle of femur, the valgus angle and the back inclination angle of a tibia platform, and determining the osteotomy amount and the osteotomy angle of femur and tibia in operation, wherein the operation steps of the application method comprise: revealing the joint, removing the joint cartilage, placing an osteotomy guide plate, positioning the osteotomy guide plate, verifying the lower limb force line, and performing osteotomy.
The application method of the personalized custom D printing osteotomy guide plate comprises the steps of importing MRI data of a patient into a computer, performing three-dimensional reconstruction by using computer three-dimensional reconstruction software, measuring the external rotation angle, the valgus angle and the tibial plateau back inclination angle of the femur, and determining the osteotomy amount and the osteotomy angle of the femur and the tibia in the operation, wherein the operation steps of the application method comprise: revealing the bone joint, placing the osteotomy guide plate, positioning the osteotomy guide plate, verifying the lower limb force line, and performing osteotomy.
When the tibia is osteotomy, not only cartilage tissues around the tibia need to be removed, but also meniscus and cruciate ligament attachment points need to be removed, so that a positioning reference point corresponding to the osteotomy guide plate on the tibia is found out.
When the bone joint is exposed, the bone structures of the distal femur and the proximal tibia are exposed, and the stability of the implanted prosthesis is again evaluated according to the soft tissue condition of the knee joint when the bone cutting guide plate is placed.
When the osteotomy guide plate is positioned, firstly, a positioning steel nail is inserted into a vertical positioning hole, then an intramedullary force wire rod is inserted, after the femur side force line or the tibia side force line is verified, the positioning steel nail is inserted into an inclined positioning hole, and then, the femur far-end osteotomy or the tibia osteotomy is carried out along an incision between two limiting steel plates.
The invention has compact structure, small size and small incision in the operation process, and reduces the probability of excessive bleeding, infection, fat embolism, fracture and other causes caused by the operation; the positioning holes with specific structures are arranged, so that the problem that the positioning holes at two positions of the traditional cutting die are mutually intersected is avoided, the operation steps are simplified, the reasonable and accurate lower limb force lines are ensured, and the normal service life after operation is prolonged; the setting of the limit steel plate skillfully prevents the possibility of damage to the osteotomy plate by the osteotomy instrument, ensures the accuracy of osteotomy and directly improves the success rate of the operation. The positioning tentacles are arranged to replace the original positioning plates, so that raw materials for 3D printing are saved, the size of the overall structure is directly reduced, and the probability of postoperative complications is reduced. The extension line of the osteotomy opening is separated from the extension line of the inclined positioning hole, so that the positioning spike in the inclined positioning hole can not interfere with the osteotomy instrument during osteotomy. The vertical positioning holes and the inclined positioning holes are respectively arranged at two, so that at least two positioning points are arranged in the same positioning surface, and the positioning reliability of each positioning surface is fully ensured. The two vertical locating holes are symmetrically arranged, the two inclined locating holes are symmetrically arranged, and on the basis of guaranteeing reliable locating, the effect of convenient 3D printing is achieved. The method of the invention simplifies complex operation, shortens operation time, does not need marrow opening, reduces damage and improves satisfaction of patients.
Drawings
FIG. 1 is a schematic diagram of the structure of the present invention;
FIG. 2 is a schematic view of the osteotomy cut of FIG. 1;
FIG. 3 is a schematic side view of the structure of FIG. 1;
FIG. 4 is a schematic elevational view of the present invention;
fig. 5 is a schematic perspective view of the present invention.
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. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without any inventive effort, are intended to be within the scope of the invention.
As shown in fig. 1 to 5, in embodiment 1, a personalized 3D printing osteotomy guide plate includes a fixing plate 1 and an osteotomy plate 2 integrally 3D printed, and the osteotomy plate 2 and the fixing plate 1 are relatively integrally connected front and rear. A C-shaped fixing groove 101 is formed in one side of the fixing plate 1, which is attached to the bone surface of a patient, and an inner groove surface 102 of the fixing groove 101 is attached to the bone surface of the patient, wherein the inner groove surface 102 is obtained through 3D printing planned before operation. The fixing plate 1 is provided with a positioning hole 3 penetrating through the fixing groove 101, and the positioning hole 3 comprises a vertical positioning hole 301 at the bottom of the fixing groove 101 and an inclined positioning hole 302 at the side surface of the fixing groove 101. The vertical positioning holes 301 include a first vertical positioning hole 311 and a second vertical positioning hole 321, the distance between the first vertical positioning hole 311 and the adjacent side is M, the distance between the second vertical positioning hole 321 and the adjacent side is N, the distance between the first vertical positioning hole 311 and the second vertical positioning hole 321 is O, and M, N, O are equal. The two vertical positioning holes are formed, so that two positioning points are arranged in the same positioning surface, and the positioning reliability of each positioning surface is fully ensured. The two vertical locating holes are symmetrically arranged, and on the basis of guaranteeing reliable locating, the effect of convenient 3D printing is achieved.
The osteotomy plate 2 is reserved with an osteotomy opening 201, the orientation of the osteotomy opening 201 is the same as the notch orientation of the fixed slot 101, two limiting steel plates are installed in the osteotomy opening 201, and two positioning tentacles 202 perpendicular to the cross section of the osteotomy plate 2 are arranged on the outer side of the osteotomy plate 2. The osteotomy opening 201 is a rectangular notch, and the left and right ends of the rectangular notch are provided with steel plate clamping grooves 212, and the steel plate clamping grooves 212 are cuboid. The thickness of the steel plate clamping groove 212 is larger than that of the osteotomy opening 201, the cross sections of the osteotomy opening 201 and the steel plate clamping groove 212 form an I shape, the limiting steel plate is in plug-in fit with the steel plate clamping groove 212, the cross section of the limiting steel plate is U-shaped, and the two U-shaped limiting steel plates are clamped in the osteotomy opening 201 back to back.
The extension line of the osteotomy opening 201 is separated from the extension line of the inclined positioning hole 302, so that the positioning spike in the inclined positioning hole is fully ensured not to interfere with osteotomy instruments during osteotomy, the problem that the positioning holes at two positions of the traditional cutting die are mutually intersected is avoided, the operation steps are simplified, the reasonable and accurate lower limb force lines are ensured, and the normal service life of the postoperative is prolonged.
Embodiment 2, a personalized 3D printing osteotomy guide plate, the inclined positioning holes 302 include a first inclined positioning hole 312 and a second inclined positioning hole 322, the first inclined positioning hole 312 is disposed in one side groove wall of the fixed groove 101, the second inclined positioning hole 322 is disposed in the other side groove wall of the fixed groove 101, and the first inclined positioning hole 312 and the second inclined positioning hole 322 are bilaterally symmetrical. The two inclined positioning holes are symmetrically arranged, so that the effect of convenient 3D printing is realized on the basis of ensuring reliable positioning, and the manufacturing process is further simplified.
Other structures of this embodiment are the same as those of embodiment 1.
Embodiment 3, a personalized 3D printing osteotomy guide, the centerline of the angled locating hole 302 is in the same plane as the centerline of the vertical locating hole 301. The inclined locating holes and the vertical locating holes are arranged on the same plane, so that convenience in 3D printing is guaranteed, and convenience in locating by inserting locating spikes in operation is guaranteed.
Other structures of this embodiment are the same as those of embodiment 1.
Embodiment 4, a method for using a personalized 3D printing osteotomy guide plate, if the osteotomy guide plate is obtained by: the CT scanning data of the patient is imported into a computer, three-dimensional reconstruction is carried out by applying computer three-dimensional reconstruction software, the rotation angle, the valgus angle and the tibial plateau back inclination angle of the femur are measured, the osteotomy quantity and the osteotomy angle of the femur and the tibia in operation are determined, and the operation steps of the using method comprise: exposing the bone joint, removing joint cartilage, placing an osteotomy guide plate, positioning the osteotomy guide plate, verifying the lower limb force line, and performing osteotomy;
when the bone joint is exposed, the bone structures of the distal femur and the proximal tibia need to be fully exposed, and soft tissues around the femur and the tibia are cleaned as much as possible, so that the bone morphology is better exposed, and the osteotomy guide plate is placed. The bone cutting guide plate is placed by taking the bone structure as a reference point, so that osteophytes at the reference mark point can not be cleaned when the bone cutting guide plate is placed, and the positioning accuracy is not affected. The osteotomy guide plate is obtained according to a preoperative plan, and the stability of the implanted prosthesis is estimated again according to the soft tissue condition of the knee joint when the osteotomy guide plate is placed, and is compared with the preoperative plan.
Because the osteotomy guide plate is obtained based on CT data of a patient, the articular cartilage at the femur side cannot be displayed in CT, and a spatula is required to be used for removing the articular cartilage with the surface of the femur condyle fixed as a reference point before the osteotomy guide plate is placed.
After the articular cartilage at the position of the femoral condyle serving as a reference point is removed, a femoral side osteotomy guide plate is placed, after the femoral side osteotomy guide plate is firmly attached, positioning long nails are driven into the positioning holes, and the position where the osteotomy guide plate is placed during nailing is released and moved. When positioning is carried out, the positioning spike in the vertical positioning hole corresponding to the distal femur end is used for properly deepening the nailing depth. The femoral lateral force lines are verified and then osteotomy is performed. When the amount of the femur distal end osteotomy is calculated and determined according to the preoperative planning, whether the collateral ligaments are injured or not is checked again before the osteotomy.
When the tibia is osteotomy, not only cartilage tissues around the tibia need to be removed, but also meniscus and cruciate ligament attachment points need to be removed, so that a positioning reference point corresponding to the osteotomy guide plate on the tibia is found out.
Embodiment 5, a method for using a personalized 3D printing osteotomy guide, if the osteotomy guide is obtained by: the MRI data of the patient is imported into a computer, three-dimensional reconstruction is carried out by applying computer three-dimensional reconstruction software, the rotation angle, the valgus angle and the tibial plateau back dip angle of the femur are measured, the osteotomy quantity and the osteotomy angle of the femur and the tibia in operation are determined, and the operation steps of the using method comprise: revealing the bone joint, placing the osteotomy guide plate, positioning the osteotomy guide plate, verifying the lower limb force line, and performing osteotomy.
When the bone joint is exposed, the bone structures of the distal femur and the proximal tibia need to be fully exposed, and soft tissues around the femur and the tibia are cleaned as much as possible, so that the bone morphology is better exposed, and the osteotomy guide plate is placed. The bone cutting guide plate is placed by taking the bone structure as a reference point, so that osteophytes at the reference mark point can not be cleaned when the bone cutting guide plate is placed, and the positioning accuracy is not affected. The osteotomy guide plate is obtained according to a preoperative plan, and the stability of the implanted prosthesis is estimated again according to the soft tissue condition of the knee joint when the osteotomy guide plate is placed, and is compared with the preoperative plan.
After the articular cartilage at the position of the femoral condyle serving as a reference point is removed, a femoral side osteotomy guide plate is placed, after the femoral side osteotomy guide plate is firmly attached, positioning long nails are driven into the positioning holes, and the position where the osteotomy guide plate is placed during nailing is released and moved. When positioning is carried out, the positioning spike in the vertical positioning hole corresponding to the distal femur end is used for properly deepening the nailing depth. The femoral lateral force lines are verified and then osteotomy is performed. When the amount of the femur distal end osteotomy is calculated and determined according to the preoperative planning, whether the collateral ligaments are injured or not is checked again before the osteotomy.
When the tibia is osteotomy, not only cartilage tissues around the tibia need to be removed, but also meniscus and cruciate ligament attachment points need to be removed, so that a positioning reference point corresponding to the osteotomy guide plate on the tibia is found out.
Embodiment 6, a method for using a personalized 3D printing osteotomy guide plate, wherein when the osteotomy guide plate is positioned, firstly, a positioning steel nail is inserted into a vertical positioning hole, then an intramedullary force wire rod is inserted, after the femur side force line or tibia side force line is verified, the positioning steel nail is inserted into an inclined positioning hole, and then, a femur distal osteotomy or tibia osteotomy is performed along an incision between two limiting steel plates.
Other structures of this embodiment are the same as those of embodiment 4 or 5.
The present invention is not to be taken in any way as long as it is common knowledge in the art.
The foregoing description of the preferred embodiments of the invention is not intended to be limiting, but rather is intended to cover all modifications, equivalents, alternatives, and improvements that fall within the spirit and scope of the invention.
Claims (2)
1. Personalized customization 3D prints and cuts bone conduction board, including fixed plate (1) and osteotomy board (2), its characterized in that: a fixing groove (101) is formed in one side, which is attached to a bone surface, of the fixing plate (1), an inner groove surface (102) of the fixing groove (101) is attached to the bone surface, a positioning hole (3) is formed in the fixing plate (1), the positioning hole (3) comprises a vertical positioning hole (301) in the bottom of the fixing groove (101) and an inclined positioning hole (302) in the side surface of the fixing groove (101), an osteotomy opening (201) is reserved in the osteotomy plate (2), the orientation of the osteotomy opening (201) is the same as the notch orientation of the fixing groove (101), an extension line of the osteotomy opening (201) is away from an extension line of the inclined positioning hole (302), two limiting steel plates are arranged in the osteotomy opening (201), and two positioning tentacles (202) perpendicular to the cross section of the osteotomy plate (2) are arranged on the outer side of the osteotomy plate (2);
the bone cutting opening (201) is a rectangular notch, steel plate clamping grooves (212) are formed in the left end and the right end of the rectangular notch, the steel plate clamping grooves (212) are cuboid, the thickness of each steel plate clamping groove (212) is larger than that of the bone cutting opening (201), the cross sections of the bone cutting opening (201) and the steel plate clamping grooves (212) form an I shape, the limiting steel plates are in plug-in fit with the steel plate clamping grooves (212), the cross sections of the limiting steel plates are U-shaped, and the two U-shaped limiting steel plates are clamped in the bone cutting opening (201) in a back-to-back mode;
the vertical positioning holes (301) comprise first vertical positioning holes (311) and second vertical positioning holes (321), the distance between the first vertical positioning holes (311) and the adjacent side edges is M, the distance between the second vertical positioning holes (321) and the adjacent side edges is N, and the distances between the first vertical positioning holes (311) and the second vertical positioning holes (321) are O and M, N, O;
the inclined locating holes (302) comprise first inclined locating holes (312) and second inclined locating holes (322), the first inclined locating holes (312) are formed in one side groove wall of the fixed groove (101), the second inclined locating holes (322) are formed in the other side groove wall of the fixed groove (101), and the first inclined locating holes (312) and the second inclined locating holes (322) are bilaterally symmetrical.
2. The personalized custom 3D printed osteotomy guide of claim 1, wherein: the center line of the inclined positioning hole (302) and the center line of the vertical positioning hole (301) are positioned in the same plane.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810603257.4A CN108784821B (en) | 2018-06-12 | 2018-06-12 | Personalized customization 3D printing osteotomy guide plate and use method thereof |
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| CN201810603257.4A CN108784821B (en) | 2018-06-12 | 2018-06-12 | Personalized customization 3D printing osteotomy guide plate and use method thereof |
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| CN108784821A CN108784821A (en) | 2018-11-13 |
| CN108784821B true CN108784821B (en) | 2024-03-05 |
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| CN114209390A (en) * | 2022-01-21 | 2022-03-22 | 世康数字(北京)科技有限公司 | Positioning and mounting method and system of bone cutting guide plate, electronic device and storage medium |
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| CN209122422U (en) * | 2018-06-12 | 2019-07-19 | 河南锡创数字医学研发有限公司 | A kind of personalized customization 3D printing osteotomy guide plate |
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2018
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| KR20060015966A (en) * | 2004-08-16 | 2006-02-21 | 서재곤 | Cutter for tibial |
| WO2014198279A1 (en) * | 2013-06-11 | 2014-12-18 | محمود علم الدين حافظ، | Device and method for fitting an artificial knee joint using universal electronic templates which can be adapted to all artificial joints |
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