CN111528980A - Femur positioning device for knee joint fixing platform single condyle replacement - Google Patents
Femur positioning device for knee joint fixing platform single condyle replacement Download PDFInfo
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- CN111528980A CN111528980A CN202010298807.3A CN202010298807A CN111528980A CN 111528980 A CN111528980 A CN 111528980A CN 202010298807 A CN202010298807 A CN 202010298807A CN 111528980 A CN111528980 A CN 111528980A
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- prosthesis
- drilling
- concave base
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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
- A61B17/16—Bone cutting, breaking or removal means other than saws, e.g. Osteoclasts; Drills or chisels for bones; Trepans
- A61B17/17—Guides or aligning means for drills, mills, pins or wires
- A61B17/1732—Guides or aligning means for drills, mills, pins or wires for bone breaking devices
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/16—Bone cutting, breaking or removal means other than saws, e.g. Osteoclasts; Drills or chisels for bones; Trepans
- A61B17/17—Guides or aligning means for drills, mills, pins or wires
- A61B17/1739—Guides or aligning means for drills, mills, pins or wires specially adapted for particular parts of the body
- A61B17/1764—Guides or aligning means for drills, mills, pins or wires specially adapted for particular parts of the body for the knee
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
- A61F2/02—Prostheses implantable into the body
- A61F2/30—Joints
- A61F2/46—Special tools or methods for implanting or extracting artificial joints, accessories, bone grafts or substitutes, or particular adaptations therefor
- A61F2/4601—Special tools or methods for implanting or extracting artificial joints, accessories, bone grafts or substitutes, or particular adaptations therefor for introducing bone substitute, for implanting bone graft implants or for compacting them in the bone cavity
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
- A61F2/02—Prostheses implantable into the body
- A61F2/30—Joints
- A61F2/46—Special tools or methods for implanting or extracting artificial joints, accessories, bone grafts or substitutes, or particular adaptations therefor
- A61F2/4603—Special tools or methods for implanting or extracting artificial joints, accessories, bone grafts or substitutes, or particular adaptations therefor for insertion or extraction of endoprosthetic joints or of accessories thereof
- A61F2/461—Special tools or methods for implanting or extracting artificial joints, accessories, bone grafts or substitutes, or particular adaptations therefor for insertion or extraction of endoprosthetic joints or of accessories thereof of knees
-
- 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
- A61B2017/564—Methods for bone or joint treatment
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
- A61F2/02—Prostheses implantable into the body
- A61F2/30—Joints
- A61F2/46—Special tools or methods for implanting or extracting artificial joints, accessories, bone grafts or substitutes, or particular adaptations therefor
- A61F2002/4635—Special tools or methods for implanting or extracting artificial joints, accessories, bone grafts or substitutes, or particular adaptations therefor using minimally invasive surgery
Abstract
The application provides a thighbone positioner of knee joint fixed platform unicondylar replacement art, its characterized in that, including thighbone drilling director, location calibrator, unicondylar prosthesis. The method comprises the steps of selecting a proper positioning calibrator according to the tibial plateau prosthesis, tightly attaching the outer side (or inner side) wall of the tibial plateau prosthesis after osteotomy through the cambered surface of the concave base in the positioning calibrator, and completing femoral positioning operation after the groove of the hollow cylinder of the door-shaped limiting frame blocks two guide holes of the femoral drilling guide. The device is showing the interference that the "shelters from" effect of patella was placed the thighbone drilling director when reducing the use in the art, can also carry out the accurate location of thighbone side false body position direction, prevents that thighbone false body from taking place the interior, outward turning, the interior not good condition such as turn up, operates labour saving and time saving, and the step is simple, and repeatability is strong moreover, and the precision is high.
Description
Technical Field
The application relates to the technical field of medical equipment, in particular to the technical field of minimally invasive unicondylar joint replacement operations of knee joints and precise femoral prosthesis positioning operations, and specifically relates to a femoral positioning device for a knee joint fixed platform unicondylar replacement operation.
Background
Knee unicondylar replacements have been widely used to treat knee unicompartmental osteoarthritis, which allow more bone mass retention, more physiological knee motor function approximation, better proprioception and knee range of motion, and faster recovery in patients relative to total knee replacements. Compared with the movable platform unicondylar replacement, the fixed platform unicondylar joint replacement can be used for treating the knee joint medial and lateral compartment osteoarthritis without worrying about the occurrence of complications such as gasket slippage and the like. However, the surgical technique of knee lateral unicondylar joint replacement is difficult, the requirements on the experience of an operator are high, uncertain factors influencing the positioning of the femoral side prosthesis are many, and a unified reference standard is still lacked. If there is significant femoral prosthesis malposition, the long-term survival rate of the unicondylar prosthesis will be affected.
Content of application
The utility model aims to overcome the not enough of prior art, provide a thighbone positioner of knee joint fixed platform unicondylar replacement art, accomplish knee joint fixed platform unicondylar replacement art and realize thighbone prosthesis's accurate location under the little incision of mainly used wicresoft.
In order to achieve the above object, the present application provides the following technical solutions:
a femur positioning device for knee joint fixed platform unicondylar replacement is characterized by comprising a femur drilling guider (1), a positioning calibrator (2) and a unicondylar prosthesis (3);
the femoral drilling guider (1) comprises an upper drilling guide hole (11), a lower drilling guide hole (12) and a positioning nail positioning hole (13); the femur drilling guider (1) adopts an irregular shape and is designed into a structure with a narrow upper part and a wide lower part, the side edge is of an arc structure, and the arc surface of the femur drilling guider (1) is jointed with the femur surface in the operation; the upper drilling guide hole (11) and the lower drilling guide hole (12) are of hollow cylinder structures, and are fixedly connected with the arc-shaped surface of the femoral drilling guide (1) and used for femoral drilling guide in the operation;
the positioning calibrator (2) comprises: door type spacing frame (21), left and right sides cushion (22), concave base (23), handle 24: the door-shaped limiting frame (21) is positioned on the upper part of the left cushion block (22), the lower end of the door-shaped limiting frame (21) is fixedly connected with the left cushion block (22), and the internal size and the interval of the frame body of the door-shaped limiting frame (21) are the same as the external diameter size and the interval of the upper drilling guide hole (11) and the lower drilling guide hole (12);
the cushion blocks (22) are higher than the concave base (23) in thickness, are in cuboid strip structures, are positioned on two sides of the concave base (23), and are fixedly connected with the concave base (23);
the concave base (23) is of a plate-shaped structure, and two ends of the concave base are arc-shaped;
the left cushion block (22) is connected with a handle (24), and the handle (24) is in an outward expansion state;
the unicondylar prosthesis 3 includes: a superior prosthesis (31), a tibial plateau prosthesis (32); the prior art is the object to be tried out in the using process.
The utility model provides a thighbone positioner of knee joint fixed platform unicondylar replacement art which characterized in that:
the method comprises the steps that a proper positioning calibrator (2) is selected according to a tibial plateau prosthesis (32), so that the height h1 of a concave base (23) is the same as the height h2 of the tibial plateau prosthesis (32), the outer side (or inner side) wall of the tibial plateau prosthesis (32) after osteotomy is tightly attached to the cambered surface of the concave base (23) in the positioning calibrator (2), and a frame body of a door-shaped limiting frame (21) clamps two guide holes (an upper drilling guide hole (11) and a lower drilling guide hole (12)) of a femoral drilling guide 1 to complete femoral positioning operation.
Has the advantages that:
the application designs a thighbone positioner of knee joint fixed platform unicondylar replacement art, both can conveniently carry out the measurement of thighbone false body size under the little incision of wicresoft and select, need not excessive tractive kneecap, the interference that "shelters from" effect of kneecap when showing and using in the reduction art and place thighbone drilling director. The accurate positioning of the position direction of the femoral side prosthesis can be carried out, and the femoral prosthesis is prevented from being in poor conditions such as internal rotation, external rotation, internal eversion and the like. Only one person can finish the operation in one step, thereby not only saving time and labor and simplifying the steps, but also having strong repeatability and high precision.
Drawings
FIG. 1 is a schematic view of a femoral drill guide;
FIG. 2 is a schematic view of a positioning calibrator;
FIG. 3 is a schematic view of a single ankle prosthesis;
FIG. 4 is a schematic view of a femoral drill guide installation;
FIG. 5 is a diagram of the intraoperative positioning aligner and femoral drill guide position;
description of the reference numerals
The femoral drilling guide comprises a femoral drilling guide 1, a positioning calibrator 2 and a unicondylar prosthesis 3;
the femoral drill guide 1 includes: an upper drilling guide hole 11, a lower drilling guide hole 12 and a positioning nail positioning hole 13; the positioning calibrator 2 includes: a door-shaped limiting frame 21, a cushion block 22, a concave base 23 and a handle 24; the unicondylar prosthesis 3 includes: superior prosthesis 31, tibial plateau prosthesis 32; patella 4, femoral condyle 5.
The specific implementation mode is as follows:
a femur positioning device for knee joint fixed platform unicondylar replacement comprises a femur drilling guider 1, a positioning calibrator 2 and a unicondylar prosthesis 3; the femoral drilling guider 1 comprises an upper drilling guide hole 11, a lower drilling guide hole 12 and a positioning nail positioning hole 13; the positioning calibrator 2 includes: a door-shaped limiting frame 21, a cushion block 22, a concave base 23 and a handle 24; the unicondylar prosthesis 3 includes: superior prosthesis 31, tibial plateau prosthesis 32.
As shown in fig. 1, the femoral drill guide 1 adopts an irregular shape design and is in a structure with a narrow upper part and a wide lower part; as shown in fig. 4, the patella is located beside the upper narrow body of the femoral drill guide 1, and the upper narrow and lower wide structure is used for reducing the "shielding" effect of the patella 4 on the femoral drill guide 1 in the operation and preventing the patella 4 from interfering with the placement position of the femoral drill guide 1; the base of the femoral drilling guider 1 is of an arc-shaped structure, and the arc-shaped surface of the base of the femoral drilling guider 1 before operation is attached to the femoral surface; the upper drilling guide hole 11 and the lower drilling guide hole 12 are hollow cylindrical structures, and are fixedly connected with the arc-shaped surface of the femoral drilling guide 1 and used for femoral drilling guide in the operation; the positioning nail positioning hole 13 is positioned on the arc-shaped surface of the femoral drilling guider 1, is of a hollow circular structure and is used for positioning a positioning nail in the operation.
As shown in fig. 2, the door-shaped limiting frame 21 is positioned on the upper part of the cushion block 22, the lower end of the door-shaped limiting frame 21 is fixedly connected with the cushion block 22, and the frame body size and the space of the door-shaped limiting frame 21 are the same as the outer diameter size and the space of the upper drill hole guide hole 11 and the lower drill hole guide hole 12; the cushion block 22 is of a cuboid structure, is positioned above the concave base 23 and is fixedly connected with the concave base 23, the thickness of the cushion block 22 is just equal to that of the tibia prosthesis, the balance condition of the extension and flexion gaps of the prosthesis test model can be tested and evaluated, more importantly, the normal tension of the collateral ligament can be recovered when the femoral side drilling is prepared, and the femur and the tibia also return to the normal relative positions; the concave base 23 is a plate-shaped structure, two ends are arc-shaped, the bottom is fixed on the platform of the handle 24, the height of the concave base 23 is h1, and the arc surface of the concave base 23 is tightly attached to the outer side (or inner side) wall of the tibial plateau prosthesis 32 after osteotomy in operation; the handle 24 is a hand-held positioning calibrator 2 handle that is convenient for the operator to hold.
The unicondylar prosthesis 3 is a prior art device comprising: superior prosthesis 31, tibial plateau prosthesis 32; the tibial plateau prosthesis 32 is a semi-circular slab structure, and the height of the tibial plateau prosthesis 32 is h 2;
as shown in fig. 5, a femoral positioning device for knee fixation platform unicondylar replacement uses the principle:
the cambered surface of the concave base 23 in the positioning calibrator 2 is tightly attached to the outer side (or inner side) wall of the tibial plateau prosthesis 32 after osteotomy, and the frame body in the door-shaped limiting frame 21 clamps two guide holes (an upper drill guide hole 11 and a lower drill guide hole 12) of the femoral drill guide 1 to complete the femoral positioning operation.
Example 1:
a femur positioner for knee joint fixed platform unicondylar replacement comprises the following steps:
s 1: selecting a femur drilling guide 1 with a proper model by taking the upper edge of the femur prosthesis marked by the completely straightened leg as a reference, fitting the base of the femur drilling guide 1 with the end of the femur 5, and installing a tibial plateau prosthesis 32;
s 2: selecting a positioning aligner 2 that mates with the tibial plateau prosthesis 32 such that the height h2 of the tibial plateau prosthesis 32 is the same as the height h1 of the concave base 23;
s 3: positioning the cambered surface of the concave base 23 of the calibrator 2 to be tightly attached to the outer (or inner) wall of the tibial plateau prosthesis 32 after osteotomy;
s 4: an ore body in the door-shaped limiting frame 21 blocks two guide holes (an upper drill hole guide hole 11 and a lower drill hole guide hole 12) of the femoral drill hole guide 1;
s 5: and (5) finishing the femur positioning operation and drilling the femur.
Claims (2)
1. A femur positioning device for knee joint fixed platform unicondylar replacement is characterized by comprising a femur drilling guider (1), a positioning calibrator (2) and a unicondylar prosthesis (3);
the femoral drilling guider (1) comprises an upper drilling guide hole (11), a lower drilling guide hole (12) and a positioning nail positioning hole (13); the femur drilling guider (1) adopts an irregular shape and is designed into a structure with a narrow upper part and a wide lower part, the side edge is of an arc structure, and the arc surface of the femur drilling guider (1) is jointed with the femur surface in the operation; the upper drilling guide hole (11) and the lower drilling guide hole (12) are of hollow cylinder structures, and are fixedly connected with the arc-shaped surface of the femoral drilling guide (1) and used for femoral drilling guide in the operation;
the positioning calibrator (2) comprises: a door-shaped limiting frame (21), left and right side cushion blocks (22), a concave base (23) and a handle (24); the door-shaped limiting frame (21) is positioned on the upper part of the left cushion block (22), the lower end of the door-shaped limiting frame (21) is fixedly connected with the left cushion block (22), and the internal size and the interval of the frame body of the door-shaped limiting frame (21) are the same as the external diameter size and the interval of the upper drilling guide hole (11) and the lower drilling guide hole (12);
the cushion blocks (22) are higher than the concave base (23) in thickness, are in cuboid strip structures, are positioned on two sides of the concave base (23), and are fixedly connected with the concave base (23);
the concave base (23) is of a plate-shaped structure, and two ends of the concave base are arc-shaped;
the left cushion block (22) is connected with a handle (24), and the handle (24) is in an outward expansion state;
the unicondylar prosthesis 3 includes: a superior prosthesis (31), a tibial plateau prosthesis (32); the prior art is the object to be tried out in the using process.
2. The femoral positioning device of knee fixation unicondylar replacement of claim 1, wherein:
the method comprises the steps that a proper positioning calibrator (2) is selected according to a tibial plateau prosthesis (32), so that the height h1 of a concave base (23) is the same as the height h2 of the tibial plateau prosthesis (32), the outer side (or inner side) wall of the tibial plateau prosthesis (32) after osteotomy is tightly attached to the cambered surface of the concave base (23) in the positioning calibrator (2), and a frame body of a door-shaped limiting frame (21) clamps two guide holes (an upper drilling guide hole (11) and a lower drilling guide hole (12)) of a femoral drilling guide 1 to complete femoral positioning operation.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010298807.3A CN111528980B (en) | 2020-04-16 | 2020-04-16 | Femur positioning device for knee joint fixing platform unicondylar replacement |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010298807.3A CN111528980B (en) | 2020-04-16 | 2020-04-16 | Femur positioning device for knee joint fixing platform unicondylar replacement |
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| CN111528980A true CN111528980A (en) | 2020-08-14 |
| CN111528980B CN111528980B (en) | 2023-06-20 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202010298807.3A Active CN111528980B (en) | 2020-04-16 | 2020-04-16 | Femur positioning device for knee joint fixing platform unicondylar replacement |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113397651A (en) * | 2021-07-21 | 2021-09-17 | 袁海浪 | Method for positioning longitudinal tibial osteotomy position in unicondylar replacement |
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| WO2011147832A1 (en) * | 2010-05-24 | 2011-12-01 | Episurf Medical Ab | System of manufacturing a surgical kit for cartilage repair in a joint |
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| CN113397651A (en) * | 2021-07-21 | 2021-09-17 | 袁海浪 | Method for positioning longitudinal tibial osteotomy position in unicondylar replacement |
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| CN111528980B (en) | 2023-06-20 |
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