CN104814770B - Osteotomy positions instrument and femur osteotomy method - Google Patents

Abstract

The invention provides an osteotomy positioning tool and a femoral osteotomy method. The osteotomy positioning tool includes a distal positioning part and an anterior condyle positioning part. The distal positioning part and the anterior condyle positioning part respectively have positioning end surfaces. An included angle is set between the positioning end surfaces of the anterior condyle positioning part, an osteotomy groove is provided on the anterior condyle positioning part, and a positioning device for adjusting the distal positioning part and the anterior condyle positioning part is provided on the distal positioning part and/or the anterior condyle positioning part. The adjustment mechanism of the relative position between parts. Applying the technical solution of the present invention, the osteotomy positioning tool adopts the two positioning end faces of the distal positioning part and the anterior condyle positioning part to form positioning with the outer side of the femur, does not pass through the medullary cavity for positioning, does not need to open the pulp, and the distal positioning part and the The relative position between the positioning parts of the anterior condyle can be adjusted, that is, the position of the osteotomy groove on the positioning part of the anterior condyle can be fine-tuned, so as to adapt to the individual conditions of different users, make the osteotomy more accurate, and speed up the recovery speed of the osteotomy.

Description

Osteotomy Positioning Tool and Femoral Osteotomy Method

technical field

The invention relates to the technical field of artificial joints, in particular to an osteotomy positioning tool and a femoral osteotomy method.

Background technique

Total knee arthroplasty has been around for a long time. It mainly uses osteotomy tools to remove the joints and then implants artificial knee prostheses to improve the quality of life of users and eliminate pain. Among them, clearing the joint is achieved through femoral osteotomy. During the femoral osteotomy process, some auxiliary tools are needed for positioning and determining the osteotomy position. After the saw blade is connected to the power, the desired effect can be achieved through the osteotomy groove on the auxiliary tool.

Common femoral osteotomy tools are usually composed of a femoral intramedullary positioning system and a femoral osteotomy module. The femoral osteotomy module is installed to perform femoral osteotomy after positioning is achieved through 3-4 tools in the femoral intramedullary positioning system. The existing femoral intramedullary positioning tool needs to open the femur and insert an intramedullary rod for positioning. This will cause unnecessary damage to the osteotomy person, causing bleeding, and the osteotomy time is also greatly prolonged because of the complicated osteotomy operation. Simultaneously because the number of tools required in the osteotomy process is large, the tools are heavy and the manufacturing cost is high. The existing positioning tools lack flexibility. Due to the individual differences of each osteotomy operator, the same osteotomy method is used on different individuals, and the obtained effect cannot meet the needs of all individuals, which affects the recovery of the osteotomy operator.

Contents of the invention

The main purpose of the present invention is to provide an osteotomy positioning tool and a femoral osteotomy method to solve the problem that the osteotomy positioning tool in the prior art requires pulp opening and lacks flexibility.

In order to achieve the above object, according to one aspect of the present invention, an osteotomy positioning tool is provided, comprising a distal positioning part and an anterior condyle positioning part, the distal positioning part and the anterior condyle positioning part respectively have a positioning end surface, and the distal positioning part An included angle is set between the positioning end surface of the anterior condyle positioning part, an osteotomy groove is opened on the anterior condyle positioning part, and a distal positioning part and/or anterior condyle positioning part is provided with a An adjustment mechanism for the relative position between the positioning parts.

Further, the distal positioning part is provided with a first adjustment mechanism, which adjusts the position of the distal positioning part in one or two directions parallel to the positioning end surface of the distal positioning part.

Further, the first adjustment mechanism is a threaded screw structure, and an adjustment nut for controlling the screw screw structure is protrudingly provided on the distal positioning portion.

Further, the distal positioning part is provided with a first locking part for locking the first adjustment mechanism.

Further, the anterior condyle positioning part is provided with a second adjustment mechanism, and the second adjustment mechanism adjusts the position of the anterior condyle positioning part in one direction or two directions parallel to the positioning end surface of the anterior condyle positioning part.

Further, the second adjustment mechanism is a screw screw structure, and an adjustment nut for controlling the screw screw structure protrudes from the anterior condyle positioning part.

Further, the anterior condyle positioning part is provided with a second locking part for locking the second adjustment mechanism.

Further, the positioning end faces of the distal positioning part and the anterior condyle positioning part are protrudingly provided with positioning columns, and the distal positioning part is provided with a plurality of positioning columns; and/or, the anterior condyle positioning part is provided with a plurality of positioning columns. column.

Further, one or more fixing through holes are opened on the distal positioning part; and/or one or more fixing through holes are opened on the anterior condyle positioning part, wherein one end of the fixing through hole is opened on the positioning end surface.

According to another aspect of the present invention, a femoral osteotomy method is provided. The above-mentioned osteotomy positioning tool is provided. The femoral osteotomy method includes: arranging the positioning end face of the distal positioning part of the osteotomy positioning tool against the distal end of the femur. at the highest point of the osteotomy positioning tool, and face the positioning end face of the anterior condyle positioning part of the osteotomy positioning tool at the position of the femur to be osteotomized; adjust the adjustment mechanism of the osteotomy positioning tool so that the distal positioning part is aligned with the distal end of the femur Make stable contact at the highest point of the osteotomy positioning tool, and align the osteotomy slot of the osteotomy positioning tool at the position to be osteotomy; fix the osteotomy positioning tool, and use the osteotomy saw blade to pass through the osteotomy slot for osteotomy.

Applying the technical solution of the present invention, the osteotomy positioning tool adopts the two positioning end surfaces of the distal positioning part and the anterior condyle positioning part to form positioning with the outer side of the femur, does not pass through the medullary cavity for positioning, does not need to open the pulp, and the distal positioning part and the The relative position between the positioning parts of the anterior condyle can be adjusted, that is, the position of the osteotomy groove on the positioning part of the anterior condyle can be fine-tuned, so as to adapt to the individual conditions of different users, make the osteotomy more accurate, and speed up the recovery speed of the osteotomy.

Description of drawings

The accompanying drawings constituting a part of the present application are used to provide a further understanding of the present invention, and the schematic embodiments and descriptions of the present invention are used to explain the present invention, and do not constitute an improper limitation of the present invention. In the attached picture:

Figure 1 shows a front view of an embodiment of an osteotomy positioning tool according to the present invention;

Figure 2 shows a side view of an embodiment of an osteotomy positioning tool according to the present invention; and

Figure 3 shows a perspective view of an embodiment of an osteotomy positioning tool according to the present invention.

detailed description

It should be noted that, in the case of no conflict, the embodiments in the present application and the features in the embodiments can be combined with each other. The present invention will be described in detail below with reference to the accompanying drawings and examples.

According to one aspect of the present invention, a kind of osteotomy positioning tool is provided, as shown in Fig. 1 to 3, this osteotomy positioning tool comprises distal-end positioning part 3 and anterior condyle positioning part 4, and distal-end positioning part 3 and anterior condyle The positioning part 4 has a positioning end face respectively, an included angle is set between the positioning end faces of the distal positioning part 3 and the anterior condyle positioning part 4, and an osteotomy groove 5 is provided on the front condyle positioning part 4, and the distal positioning part 3 and/or Or the anterior condyle positioning part 4 is provided with an adjustment mechanism for adjusting the relative position between the distal positioning part 3 and the anterior condyle positioning part 4 .

The osteotomy positioning tool of the present invention adopts the two positioning end surfaces of the distal positioning part 3 and the anterior condyle positioning part 4 to form positioning with the outside of the femur, does not locate through the medullary cavity, does not need to open the pulp, and the distal positioning part 3 and the anterior condyle The relative position between the positioning parts 4 can be adjusted, that is, the position of the osteotomy groove 5 on the anterior condyle positioning part 4 can be fine-tuned, so as to adapt to the individual conditions of different users, make the osteotomy more accurate, and speed up the recovery speed of the osteotomy.

Preferably, the distal positioning portion 3 is provided with a first adjustment mechanism, which adjusts the position of the distal positioning portion 3 in one or both directions parallel to the positioning end surface of the distal positioning portion 3 . Preferably, the first adjustment mechanism is a threaded screw structure, and the distal positioning part 3 is protrudingly provided with an adjustment nut 1 for controlling the threaded screw structure. Preferably, the distal positioning part 3 is provided with a first locking part for locking the first adjustment mechanism. After adjusting the position of the distal positioning part 3, the distal positioning part 3 is locked by the first locking part. The first locking part can be locked by directly fixing the distal positioning part 3 and the femur, or by locking the first locking part. Locking is done by means of the adjustment mechanism.

Preferably, the anterior condyle positioning part 4 is provided with a second adjustment mechanism, and the second adjustment mechanism adjusts the position of the anterior condyle positioning part 4 in one or both directions parallel to the positioning end surface of the anterior condyle positioning part 4 . Preferably, the second adjustment mechanism is a threaded screw structure, and an adjustment nut 1 for controlling the threaded screw structure is protrudingly provided on the anterior condyle positioning part 4 . Preferably, the anterior condyle positioning part 4 is provided with a second locking part for locking the second adjustment mechanism. After adjusting the position of the anterior condyle positioning part 4, the anterior condyle positioning part 4 is locked by the second locking part, and the second locking part can be locked by directly fixing the anterior condyle positioning part 4 and the femur, or by locking the second locking part. Locking is done by means of the adjustment mechanism.

Preferably, as shown in Figures 2 and 3, a positioning post 2 is protrudingly provided on the positioning end faces of the distal positioning portion 3 and the anterior condyle positioning portion 4 respectively, and the distal positioning portion 3 and/or the anterior condyle positioning portion 4 are provided with There are multiple positioning columns 2.

In this embodiment, a column 2 is provided on the lower end surface of the distal fixing part 3 and the inner end surface of the anterior condyle positioning part 4 to determine the fixing position, and the appropriate position is that all three columns are in contact with the bone. During the positioning process, the distal fixing part 3 is adjusted to the highest point of the distal end of the femur, the anterior condyle positioning part 4 is adjusted to the Q point, and the three columns are all in contact with the bone.

Preferably, one or more fixing through holes are opened on the distal positioning part 3 and/or the anterior condyle positioning part 4, and one end of the fixing through hole is opened on the positioning end surface.

In the embodiment shown in FIGS. 1 to 3 , there are two through holes respectively on the distal positioning part 3 and the anterior condyle positioning part 4 as fixing through holes, which are used for inserting fixing nails after positioning to play a role of fixing. After the distal positioning part 3 and the anterior condyle positioning part 4 are adjusted to proper positions, the fixing nails can be driven in for fixing.

There is a through groove on the anterior condyle positioning part 4, which is an osteotomy groove 5 for osteotomy by a saw blade. After the osteotomy positioning tool is fixed, the saw blade can be passed through the osteotomy slot 5 for osteotomy.

Preferably, the whole osteotomy positioning tool is made of stainless steel.

According to another aspect of the present invention, a femoral osteotomy method is also provided. The above-mentioned osteotomy positioning tool is provided. The femoral osteotomy method includes: facing the positioning end face of the distal positioning part 3 of the osteotomy positioning tool on the at the highest point of the distal femur, and face the positioning end face of the anterior condyle positioning part 4 of the osteotomy positioning tool at the position of the femur to be osteotomized; adjust the adjustment mechanism of the osteotomy positioning tool so that the distal positioning part 3 Make stable contact with the highest point of the distal femur, and align the osteotomy slot 5 of the osteotomy positioning tool at the position to be osteotomized; fix the osteotomy positioning tool, and use the osteotomy saw blade to pass through the osteotomy slot 5 Perform osteotomy.

In the present invention, the method of finding the highest point of the distal femur at the distal end of the femur saves the process of positioning the marrow in the marrow during the positioning process, effectively reduces traumatic bleeding, simplifies the osteotomy operation, and at the same time, according to each user's own situation The difference realizes individual customization, ensures the safety of osteotomy, and improves the recovery speed after osteotomy.

The above descriptions are only preferred embodiments of the present invention, and are not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and changes. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention shall be included within the protection scope of the present invention.

Claims (8)

1. an osteotomy positioning tool, is characterized in that, comprises distal-end positioning part (3) and anterior condyle positioning part (4), described distal-end positioning part (3) and described anterior condyle positioning part (4) respectively It has a positioning end surface, an included angle is set between the positioning end surface of the distal positioning portion (3) and the anterior condyle positioning portion (4), and an osteotomy groove ( 5), the distal positioning part (3) and/or the anterior condyle positioning part (4) is provided with a device for adjusting the distance between the distal positioning part (3) and the anterior condyle positioning part (4). Relative position adjustment mechanism; the distal positioning part (3) is provided with a first adjustment mechanism, and the first adjustment mechanism is parallel to the positioning end face of the distal positioning part (3) in one or both directions Adjust the position of the distal positioning part (3). 2. The osteotomy positioning tool according to claim 1, characterized in that, the first adjustment mechanism is a threaded screw structure, and the distal positioning part (3) is protrudingly provided with a tool for controlling the Adjusting nut (1) for threaded screw construction. 3. The osteotomy positioning tool according to claim 1, characterized in that, the distal positioning portion (3) is provided with a first locking portion for locking the first adjustment mechanism. 4. The osteotomy positioning tool according to claim 1, characterized in that, the anterior condyle positioning portion (4) is provided with a second adjustment mechanism, and the second adjustment mechanism is parallel to the anterior condyle positioning portion The positioning end surface of (4) adjusts the position of the anterior condyle positioning part (4) in one direction or in two directions. 5. The osteotomy positioning tool according to claim 4, characterized in that, the second adjustment mechanism is a threaded screw structure, and the anterior condyle positioning part (4) is protrudingly provided with and used to control the Adjusting nut (1) for threaded screw construction. 6. The osteotomy positioning tool according to claim 4, characterized in that, the anterior condyle positioning portion (4) is provided with a second locking portion for locking the second adjustment mechanism. 7. The osteotomy positioning tool according to claim 1, characterized in that, the positioning end faces of the distal positioning portion (3) and the anterior condyle positioning portion (4) are respectively protrudingly provided with positioning columns (2 ), The distal positioning part (3) is provided with a plurality of positioning columns (2); and/or, A plurality of positioning columns (2) are arranged on the anterior condyle positioning part (4). 8. The osteotomy positioning tool according to claim 1, wherein: One or more fixing through holes are opened on the distal positioning part (3); and/or, One or more fixing through holes are opened on the anterior condyle positioning part (4), Wherein, one end of the fixing through hole is opened on the positioning end surface.