CN219895843U - Tibia proximal osteotomy guide - Google Patents
Tibia proximal osteotomy guide Download PDFInfo
- Publication number
- CN219895843U CN219895843U CN202321152246.1U CN202321152246U CN219895843U CN 219895843 U CN219895843 U CN 219895843U CN 202321152246 U CN202321152246 U CN 202321152246U CN 219895843 U CN219895843 U CN 219895843U
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- China
- Prior art keywords
- positioning
- plate
- lower limb
- force line
- transverse
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- 210000002303 tibia Anatomy 0.000 title claims abstract description 35
- 210000003141 lower extremity Anatomy 0.000 claims abstract description 30
- 210000000988 bone and bone Anatomy 0.000 claims abstract description 7
- 238000005259 measurement Methods 0.000 claims description 2
- 230000002980 postoperative effect Effects 0.000 abstract description 2
- 208000003947 Knee Osteoarthritis Diseases 0.000 description 2
- 210000000629 knee joint Anatomy 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 201000008482 osteoarthritis Diseases 0.000 description 2
- 238000011883 total knee arthroplasty Methods 0.000 description 2
- 230000007547 defect Effects 0.000 description 1
- 201000010099 disease Diseases 0.000 description 1
- 208000037265 diseases, disorders, signs and symptoms Diseases 0.000 description 1
- 210000003127 knee Anatomy 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 210000000689 upper leg Anatomy 0.000 description 1
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- Surgical Instruments (AREA)
Abstract
The utility model discloses a tibia proximal osteotomy guide, which comprises a longitudinal positioning plate and two transverse positioning rods positioned in the same plane, wherein the end part of the inner side of the longitudinal positioning plate is fixedly connected with one end of each of the two transverse positioning rods, and a lower limb force line measuring plate is arranged on the longitudinal positioning plate; a second positioning column is fixed on the inner side of the other end of each transverse positioning rod, and each second positioning column is perpendicular to the plane where the two transverse positioning rods are located; the inner side of the longitudinal positioning plate is fixedly connected with one end of a third positioning column, the third positioning column is vertical to the longitudinal positioning plate, at least three screw holes are formed in the third positioning column, and a second bone cutting hole is formed between the transverse positioning rod and the third positioning column on the longitudinal positioning plate; the other end of the lower limb force line measuring plate is provided with a cylindrical hole for measuring the lower limb force line. The tibia proximal osteotomy guide device can realize quick positioning, simplify operation steps, reduce operation time and realize quick postoperative rehabilitation of patients.
Description
Technical Field
The utility model relates to a proximal tibia osteotomy guide, and belongs to the technical field of medical instruments.
Background
Knee osteoarthritis is a common and frequently occurring disease, more than 50% of old people over 65 years old, and knee surface replacement is the final effective means for treating knee osteoarthritis, and in order to remove worn joints at the proximal end of the tibia, a doctor is required to osteotomy and resect the joint surface at the proximal end of the tibia, and an artificial joint prosthesis is installed, so that the patient can stand again and walk normally.
As shown in fig. 1 and 2, a conventional osteotomy tool (for example, an integrated proximal tibial osteotomy guide customized individually) includes a slider 15, a sliding rod 13 extending through the slider 15, an osteotomy plate 14 connected to a side of the slider 15, one end of the sliding rod 13 fixedly connected to one end of a fixing plate 12, two first positioning posts 11 fixed to the other end of the fixing plate 12, and a first osteotomy hole 16 formed in the osteotomy plate 14. When the tibia cutting device is used, the sliding rod 13 is parallel to the front edge of the tibia cortex, two first positioning columns 11 are propped against the proximal end of the tibia B, the position of the sliding block 15 is adjusted up and down on the sliding rod 13, namely, the position of the osteotomy plate 14 is adjusted, after the position is reached, the positioning pin 17 penetrates through the osteotomy plate 14 and is inserted into the tibia B, then the sliding rod 13 is connected with the fixing plate 12 and the sliding block 15 to be detached, and finally, the osteotomy operation is carried out on the tibia B by penetrating the blade through the first osteotomy hole 16 by using the osteotomy knife C. Wherein the osteotomy plate 14 and femur a are located on opposite sides of tibia B, respectively.
When the traditional total knee arthroplasty is performed, the traditional osteotomy instrument is used for performing proximal tibia osteotomy, the lower limb force line and the osteotomy thickness are required to be determined according to experience, and the defects of long operation time consumption, inaccurate positioning, complex operation and the like exist.
Disclosure of Invention
The utility model aims to solve the technical problems that: how to simplify the operation steps of the proximal tibia osteotomy, and to quickly and accurately position the proximal tibia osteotomy, thereby reducing the time consumption of the proximal tibia osteotomy and increasing the accuracy of the osteotomy.
In order to solve the technical problems, the technical scheme of the utility model provides a proximal tibia osteotomy guide, which is characterized by comprising a longitudinal positioning plate and two transverse positioning rods positioned in the same plane, wherein the end parts of the inner sides of the longitudinal positioning plate are fixedly connected with one ends of the two transverse positioning rods, the plane of the two transverse positioning rods is vertical to the longitudinal positioning plate, and a lower limb force line measuring plate is arranged on the longitudinal positioning plate; one end of the lower limb force line measuring plate is connected to one side of the longitudinal positioning plate, which is opposite to the transverse positioning rod;
a second positioning column is fixed on the inner side of the other end of each transverse positioning rod, and each second positioning column is perpendicular to the plane where the two transverse positioning rods are located; the inner side of the longitudinal positioning plate is fixedly connected with one end of a third positioning column, the third positioning column is vertical to the longitudinal positioning plate, at least three screw holes are formed in the third positioning column, and a second bone cutting hole is formed between the transverse positioning rod and the third positioning column on the longitudinal positioning plate; the other end of the lower limb force line measuring plate is provided with a cylindrical hole for measuring the lower limb force line.
Preferably, the longitudinal positioning plate is provided with a socket which can be provided with a lower limb force line measuring plate, and the lower limb force line measuring plate is detachably arranged in the socket.
Preferably, the cylindrical hole is perpendicular to the lower limb force line measuring plate; the lower limb force line measuring plate is parallel to the plane where the two transverse locating rods are located.
Preferably, the two second positioning posts are matched with the center of the tibia platform; the other end of the third positioning column is matched with the protruding surface of the bone surface above the tibial tuberosity.
The tibia proximal osteotomy guide device can realize quick positioning, simplify operation steps, reduce operation time and realize quick postoperative rehabilitation of patients.
When the proximal tibia osteotomy of knee joint replacement is performed, the proximal tibia osteotomy guide is used, and the proximal tibia osteotomy guide is matched with the proximal tibia, so that the osteotomy can be rapidly positioned and the lower limb force line can be calibrated. Avoiding the use of multiple instruments for positioning osteotomy.
Drawings
FIG. 1 is a schematic view of the positioning of a tibial osteotomy plate;
FIG. 2 is a schematic representation of an osteotomy using a tibial osteotomy plate;
FIG. 3 is a front view of a proximal tibial osteotomy guide;
FIG. 4 is a top view of a proximal tibial osteotomy guide;
fig. 5 is a right side view of a proximal tibial osteotomy guide.
Detailed Description
In order to make the utility model more comprehensible, preferred embodiments accompanied with figures are described in detail below.
The utility model provides a proximal tibia osteotomy guide for total knee arthroplasty, as shown in fig. 3-5, which comprises a longitudinal positioning plate 21 and two transverse positioning rods 23 positioned in the same plane, wherein the inner ends of the longitudinal positioning plate 21 are fixedly connected with one ends of the two transverse positioning rods 23, the plane of the two transverse positioning rods 23 is perpendicular to the longitudinal positioning plate 21, a socket capable of being provided with a lower limb force line measuring plate 22 is arranged on the longitudinal positioning plate 21, the lower limb force line measuring plate 22 is detachably arranged in the socket, and one end of the lower limb force line measuring plate 22 is connected to one side of the longitudinal positioning plate 21 opposite to the transverse positioning rods 23 (namely the outer side of the longitudinal positioning plate 21). The lower limb force line measuring plate 22 is parallel to the plane in which the two transverse positioning rods 23 lie.
A second positioning column 231 is fixed on the inner side of the other end of each transverse positioning rod 23, and each second positioning column 231 is perpendicular to the plane where the two transverse positioning rods 23 are positioned; the inner side of the longitudinal positioning plate 21 is fixedly connected with one end of a third positioning column 211, and the third positioning column 211 is perpendicular to the longitudinal positioning plate 21. At least three screw holes 2111 are provided in the third post 211, and screws are inserted through the screw holes 2111 to secure the longitudinal plate 21 to the tibia B. A second osteotomy hole 212 is provided in the longitudinal positioning plate 21 between the transverse positioning rod 23 and the third positioning post 211. The other end of the lower limb force line measuring plate 22 is provided with a cylindrical hole 221 perpendicular to the lower limb force line measuring plate 22. The second osteotomy hole 212 is parallel to the plane of the two transverse alignment rods 23.
In this embodiment, two second positioning posts 231 are aligned with the tibial plateau center. The other end of the third positioning column 211 is matched with (i.e. has the same shape as) the protruding surface of the bone above the tibial tuberosity, i.e. the other end of the third positioning column 211 is in a circular arc structure suitable for the protruding surface of the bone above the tibial tuberosity. The material of the present utility model can be designed using a hard metal material such as PLA or stainless steel. The longitudinal positioning plate 21, the third positioning column 211, the transverse positioning rod 23 and the second positioning column 231 are integrally formed.
The present utility model locates and bites the proximal end of tibia B via two second positioning posts 231 and a third positioning post 211.
According to the knee joint replacement measurement osteotomy method, the proximal tibia osteotomy thickness and the lower limb force line are determined, and the proximal tibia osteotomy guide of the utility model is designed.
The application process of the utility model is as follows:
the present utility model is placed on the end of the tibia such that two second positioning posts 231 are in contact with the inner and outer sides of the plane of the tibial plateau, a third positioning post 211 is in contact with the protruding surface of the bone surface above the tibial tuberosity, and three screws are inserted through screw holes 2111 and into tibia B such that longitudinal positioning plate 21 and transverse positioning rod 23 are secured to tibia B. The lower limb force line measuring plate 22 is inserted into the longitudinal positioning plate 21 such that the lower limb force line measuring plate 22 is parallel to the plane in which the two transverse positioning rods 23 lie. And a metal rod is inserted into the cylindrical hole 221 to confirm whether the metal rod is parallel to the anterior edge of the tibial cortex, thereby verifying the accuracy of the tibial force line. If not, the position of the longitudinal positioning plate 21 is rotated and adjusted according to the position of the tibia power line until the tibia power line at the position is accurate. After confirming the correct position of the longitudinal positioning plate 21, an intra-or extra-tibial proximal osteotomy is performed through the second osteotomy hole 212.
Claims (4)
1. The tibia proximal osteotomy guider is characterized by comprising a longitudinal positioning plate (21) and two transverse positioning rods (23) positioned in the same plane, wherein the end parts of the inner sides of the longitudinal positioning plate (21) are fixedly connected with one ends of the two transverse positioning rods (23), the plane where the two transverse positioning rods (23) are positioned is perpendicular to the longitudinal positioning plate (21), and a lower limb force line measuring plate (22) is arranged on the longitudinal positioning plate (21); one end of the lower limb force line measuring plate (22) is connected to one side of the longitudinal positioning plate (21) opposite to the transverse positioning rod (23);
a second positioning column (231) is fixed on the inner side of the other end of each transverse positioning rod (23), and each second positioning column (231) is perpendicular to the plane where the two transverse positioning rods (23) are positioned; the inner side of the longitudinal positioning plate (21) is fixedly connected with one end of a third positioning column (211), the third positioning column (211) is perpendicular to the longitudinal positioning plate (21), at least three screw holes (2111) are formed in the third positioning column (211), and a second osteotomy hole (212) is formed in the longitudinal positioning plate (21) and located between the transverse positioning rod (23) and the third positioning column (211); the other end of the lower limb force line measuring plate (22) is provided with a cylindrical hole (221) for measuring the lower limb force line.
2. A proximal tibial osteotomy guide as in claim 1, wherein said longitudinal positioning plate (21) has a socket for receiving a lower limb force line measuring plate (22), said lower limb force line measuring plate (22) being removably received in said socket.
3. A proximal tibial osteotomy guide as in claim 1, wherein said cylindrical bore (221) is perpendicular to the lower limb force line measurement plate (22); the lower limb force line measuring plate (22) is parallel to the plane where the two transverse locating rods (23) are located.
4. A proximal tibial osteotomy guide as in claim 1, wherein said second alignment posts (231) are centrally-aligned with the tibial plateau; the other end of the third positioning column (211) is matched with the protruding surface of the bone surface above the tibial tuberosity.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321152246.1U CN219895843U (en) | 2023-05-12 | 2023-05-12 | Tibia proximal osteotomy guide |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321152246.1U CN219895843U (en) | 2023-05-12 | 2023-05-12 | Tibia proximal osteotomy guide |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219895843U true CN219895843U (en) | 2023-10-27 |
Family
ID=88440249
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321152246.1U Active CN219895843U (en) | 2023-05-12 | 2023-05-12 | Tibia proximal osteotomy guide |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219895843U (en) |
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2023
- 2023-05-12 CN CN202321152246.1U patent/CN219895843U/en active Active
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