CN106726023B - Joint Position Calibration Device - Google Patents

Abstract

The present invention provides a joint position calibration device, the joint position calibration device comprises: a first bone end, the first bone end is detachably mounted on the first bone to be calibrated in the joint; a second bone end, the second bone end The two bone ends are detachably mounted on the first bone end, and a calibration structure is provided on the second bone end to calibrate the position of the second bone to be calibrated in the joint. During operation, the position of the second bone to be calibrated is calibrated through the calibration structure, so that a positional relationship is generated between the second bone to be calibrated and the first bone to be calibrated, so that the first bone to be calibrated and the second bone to be calibrated positioning is more precise.

Description

Joint Position Calibration Device

technical field

The invention relates to the technical field of bone joint positioning, in particular to a joint position calibration device.

Background technique

Artificial knee replacement surgery has become a relatively common surgical operation in the medical field. It has remarkable effects in the treatment of rheumatoid arthritis, osteoarthritis and other diseases. In the process of total knee replacement surgery, it is necessary to Osteotomy is performed on both sides of the distal femur and proximal tibia, and the size of the prosthesis is selected and the installation position of the prosthesis is determined based on the osteotomy surface. In the current operation, the osteotomy operation and the proximal tibia are respectively performed on the distal femur and proximal tibia. If the installation position is determined, the two sides cannot be connected, which will cause deviations in the actual installation angle and displacement of the prosthesis on both sides. The uneven stress distribution of the femoro-tibial joint will result in stress concentration, which will aggravate the wear of polyethylene, damage the soft tissue function, and eventually cause the failure of the prosthesis and reduce the service life of the prosthesis.

Contents of the invention

The main purpose of the present invention is to provide a joint position calibration device to solve the problem in the prior art that the positioning of the distal end of the femur and the proximal end of the tibia is easily deviated.

In order to achieve the above object, the present invention provides a joint position calibration device, the joint position calibration device comprises: a first bone end, the first bone end is detachably mounted on the first bone to be calibrated in the joint; The bone end, the second bone end is detachably mounted on the first bone end, and the second bone end is provided with a calibration structure to calibrate the position of the second bone to be calibrated in the joint.

Further, the end of the first bone includes: a fixed shell, a receiving groove is formed on the inner wall of the fixed shell, and the receiving groove is adapted to the joint end of the first bone to be calibrated.

Further, the end of the first bone further includes: a positioning post, the positioning post is arranged in the receiving groove, and the positioning post is detachably penetrated in the joint end of the first bone to be calibrated.

Further, the joint end of the first bone to be calibrated is the distal end of the femur, and the first bone end also includes: a positioning convex beam, the positioning convex beam is arranged in the receiving groove, and the positioning convex beam and the intercondylar notch of the distal end of the femur match.

Further, there are multiple positioning columns, and the multiple positioning columns are arranged symmetrically with the length direction of the positioning convex beam as the center line.

Further, the second bone end includes a main body, the calibration structure includes a position marking groove, and the position marking groove is arranged on the outer wall of the main body.

Further, a calibration surface is provided on the side of the main body away from the end of the first bone, and the length direction of the position marking groove is perpendicular to the calibration surface.

Further, the second bone end part further includes a first connecting part, the first connecting part is disposed on the main body, and the first bone end part is provided with a second connecting part detachably connected to the first connecting part.

Further, the first connecting part is an elastic card, and the elastic card is provided with a locking protrusion, and the second connecting part is a card slot matching the locking protrusion.

Further, the end of the first bone also includes a relief groove, the relief groove is arranged on the side of the positioning beam away from the first bone to be aligned, and the locking groove is arranged on the inner wall of the relief groove.

Applying the technical solution of the present invention, since the joint position calibration device of the present invention includes a first bone end and a second bone end, and a device for calibrating the position of the second bone to be calibrated in the joint is provided on the second bone end When working, the first bone end is installed on the first bone to be calibrated, and the second bone end is installed on the first bone to be calibrated. After the installation is completed, the second bone to be calibrated is adjusted by the calibration structure. The position of the bone to be calibrated is calibrated, so that a positional relationship is generated between the second bone to be calibrated and the first bone to be calibrated, so that the positioning between the first bone to be calibrated and the second bone to be calibrated is more accurate.

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:

Fig. 1 schematically shows a structural diagram of an embodiment of a first bone end of the present invention;

Fig. 2 schematically shows the structural diagram of the embodiment of the second bone end of the present invention;

Fig. 3 schematically shows the structural view that the second bone end of the present invention is installed on the first bone end;

Fig. 4 schematically shows the structural view of the joint position calibration device of the present invention installed on the joint; and

Fig. 5 schematically shows a structural view of another angle after the joint position calibration device of the present invention is installed on the joint.

Wherein, the above-mentioned accompanying drawings include the following reference signs:

10, the first bone end; 11, the fixed shell; 12, the positioning column; 13, the positioning convex beam; 14, the slot; 20, the second bone end; 21, the calibration structure; 22, the main body; 221, the calibration surface ; 23, elastic card; 231, clamping protrusion; 30, the first bone to be calibrated; 40, the second bone to be calibrated.

Detailed ways

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.

It should be pointed out that the following detailed description is exemplary and intended to provide further explanation to the present application. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs.

It should be noted that the terminology used here is only for describing specific implementations, and is not intended to limit the exemplary implementations according to the present application. As used herein, unless the context clearly dictates otherwise, the singular is intended to include the plural, and it should also be understood that when the terms "comprising" and/or "comprising" are used in this specification, they mean There are features, steps, operations, means, components and/or combinations thereof.

It should be noted that the terms "first" and "second" in the description and claims of the present application and the above drawings are used to distinguish similar objects, but not necessarily used to describe a specific sequence or sequence. It is to be understood that the terms so used are interchangeable under appropriate circumstances such that the embodiments of the application described herein are, for example, capable of operation in sequences other than those illustrated or described herein.

Furthermore, the terms "comprising" and "having", as well as any variations thereof, are intended to cover a non-exclusive inclusion, for example, a process, method, system, product or device comprising a sequence of steps or elements is not necessarily limited to the expressly listed instead, may include other steps or elements not explicitly listed or inherent to the process, method, product or apparatus.

For the convenience of description, spatially relative terms may be used here, such as "on ...", "over ...", "on the surface of ...", "above", etc., to describe the The spatial positional relationship between one device or feature shown and other devices or features. It will be understood that the spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures.

For example, if the device in the figures is turned over, devices described as "above" or "above" other devices or configurations would then be oriented "beneath" or "above" the other devices or configurations. under other devices or configurations”. Thus, the exemplary term "above" can encompass both an orientation of "above" and "beneath". The device may be otherwise oriented (rotated 90 degrees or at other orientations) and the spatially relative descriptions used herein interpreted accordingly.

1 to 5, the present invention provides a joint position calibration device, the joint position calibration device includes: a first bone end 10 and a second bone end 20, wherein the first bone end 10 can It is detachably installed on the first bone 30 to be calibrated in the joint; the second bone end 20 is detachably installed on the first bone end 10, and the second bone end 20 is provided with a calibration structure 21 to align the joint The position of the second bone 40 to be calibrated is calibrated. During installation, the staff puts the first bone end 10 joint on the first bone 30 to be calibrated, and installs the second bone end 20 on the first bone end 10, and when working, first passes through the second bone end 20 to find its correct position corresponding to the first bone end 10, and then calibrate with the second bone 40 to be calibrated through the calibration structure 21 on the second bone end 20. After calibration, the second bone 40 to be calibrated can be Draw a line to identify where the prosthesis will fit. Since the joint position calibration device of the present invention includes a first bone end and a second bone end, and a calibration structure for calibrating the position of the second bone to be calibrated in the joint is provided on the second bone end, when working, Install the end of the first bone on the first bone to be calibrated, and then install the end of the second bone on the first bone to be calibrated. After the installation is completed, the position of the second bone to be calibrated is calibrated through the calibration structure, so that A position correlation is generated between the second bone to be calibrated and the first bone to be calibrated, so that the positioning between the first bone to be calibrated and the second bone to be calibrated is more precise.

Wherein, the first bone to be calibrated 30 in the present invention especially refers to the femur in this application, and the second bone to be calibrated 40 in the present invention especially refers to the tibia in this application. It should be noted that the femur and tibia mentioned in this application are the femur and tibia that have been processed through the existing medical means of prosthesis installation, and the purpose is to facilitate the installation and positioning of the staff. repeat.

Referring to Fig. 1, specifically, the first bone end 10 in the present invention includes a fixed shell 11, and an accommodation groove is formed on the inner wall of the fixed shell 11, and the accommodation groove is suitable for the joint end of the first bone 30 to be calibrated. match. During installation, the staff installs the first bone to be calibrated 30 in the receiving groove, installs the first bone end 10 in the present invention on the first bone to be calibrated 30 through the fixing shell 11, and simultaneously The matching receiving groove of the joint end of the bone 30 makes the position of the first bone end 10 on the first bone 30 to be calibrated more accurate.

In order to make the calibration of the joint position calibration device of the present invention more accurate, specifically to make the installation position of the first bone end 10 in the present invention more accurate, preferably, the first bone end 10 also includes a positioning column 12, positioning The post 12 is arranged in the receiving groove, and the positioning post 12 is detachably penetrated in the joint end of the first bone 30 to be calibrated. During installation, the staff will perforate the positioning column 12 of the present invention on the first bone 30 to be calibrated with the positioning hole drilled in advance. During work, the positioning of the first bone end 10 will be realized through the positioning column 12 of the present invention. .

In order to further improve the accuracy of the installation position of the first bone end 10, preferably, the joint end of the first bone to be calibrated 30 is the distal end of the femur, and the first bone end 10 also includes a positioning convex beam 13, and the positioning convex beam 13 is arranged in the receiving groove, and the positioning convex beam 13 is adapted to the intercondylar notch at the distal end of the femur. Wherein, the joint end of the first bone to be calibrated 30 is the distal end of the femur, and correspondingly, the joint end of the second bone to be calibrated 40 is the proximal end of the tibia. There is an intercondylar notch in the middle of the femoral condyle at the distal end of the femur. In the existing processing of the femoral condyle, the general shape of the intercondylar notch will be retained and the prosthesis will be installed using its shape. During installation, the staff installs the positioning convex beam 13 in the intercondylar notch, thereby making the installation position of the first bone end 10 more accurate and laying a solid foundation for subsequent calibration.

In order to further improve the accuracy of the installation position of the first bone end 10 , preferably, there are multiple positioning columns 12 in the present invention, and the multiple positioning columns 12 are arranged symmetrically with the length direction of the positioning convex beam 13 as the center line. During installation, a plurality of positioning columns 12 in the present invention are installed in a plurality of positioning holes processed in advance, and during work, the installation accuracy of the first bone end 10 is improved by the cooperation of a plurality of positioning columns 12 with the positioning holes. Further improve.

Referring to FIG. 2 , specifically, the second bone end 20 in the present invention includes a main body 22 , and the alignment structure 21 includes a position marking groove, and the position marking groove is provided on the outer wall of the main body 22 . Install the second bone end 20 in the present invention on the first bone end, and assist the staff to find the correct position on the second bone to be calibrated through the position marking groove, and make a mark, so that the first to be calibrated The positioning between the calibration bone and the second bone to be calibrated is more precise. Wherein, the calibration structure 21 in the present invention is not limited to the position marking groove, but also can be a structure such as a protrusion, or a position marking line, as long as it can satisfy the calibration function of the calibration structure 21 in the present invention.

In order to facilitate calibration, preferably, a calibration surface 221 is provided on the side of the main body 22 away from the first bone end 10 , and the length direction of the position marking groove is perpendicular to the calibration surface 221 . During installation, install the calibration surface corresponding to the second bone to be calibrated.

In order to cause displacement between the first bone end 10 and the second bone end 20 in the present invention and affect the calibration accuracy, preferably, the second bone end 20 in the present invention also includes a first connection part, the first connection The first bone end part 10 is provided with a second connecting part detachably connected with the first connecting part. During installation, the first connecting portion on the second bone end 20 and the second connecting portion on the first bone end are connected, so that the first bone end 10 and the second bone end 20 are connected together to prevent the two The displacement between them effectively ensures the calibration accuracy of the relative position.

Specifically, the first connecting part in the present invention is the elastic card 23 , and the elastic card 23 is provided with a locking protrusion 231 , and the second connecting part is the slot 14 matching the locking protrusion 231 . During installation, the elastic card 23 of the present invention is inserted into the slot, so that the locking protrusion 231 is stuck inside the slot 14, and the installation is simple and convenient.

In order to make reasonable use of space, preferably, the first bone end 10 in the present invention also includes a relief groove, the relief groove is arranged on the side of the positioning convex beam 13 away from the first bone 30 to be calibrated, and the groove 14 is arranged on the inner wall of the relief groove.

Below in conjunction with Fig. 3 to Fig. 5, take the first bone to be calibrated as the femur, and the second bone to be calibrated as the tibia to describe the application in detail, the first bone end 10 is detachably installed on the femur of the joint; the second The bone end 20 is detachably mounted on the first bone end 10, and the second bone end 20 is provided with a calibration structure 21 to calibrate the position of the tibia of the joint. During installation, the staff puts the first bone end 10 on the femur of the joint, and installs the second bone end 20 on the first bone end 10; The correct position of the first bone end 10 is calibrated by the calibration structure 21 on the second bone end 20 and the second bone 40 to be calibrated. After calibration, a line can be drawn on the second bone 40 to be calibrated to determine the false position. The installation position of the body.

From the above description, it can be seen that the above-mentioned embodiments of the present invention have achieved the following technical effects:

Since the joint position calibration device of the present invention includes a first bone end and a second bone end, and a calibration structure for calibrating the position of the second bone to be calibrated in the joint is provided on the second bone end, when working, Install the end of the first bone on the first bone to be calibrated, and then install the end of the second bone on the first bone to be calibrated. After the installation is completed, the position of the second bone to be calibrated is calibrated through the calibration structure, so that A position correlation is generated between the second bone to be calibrated and the first bone to be calibrated, so that the positioning between the first bone to be calibrated and the second bone to be calibrated is more precise.

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 (9)

1. A joint position calibration device, characterized in that, comprising: a first bone end (10), said first bone end (10) being detachably mounted on a first bone to be calibrated (30) of the joint; The second bone end (20), the second bone end (20) is detachably mounted on the first bone end (10), and the second bone end (20) is provided with a calibration a structure (21) to calibrate the position of a second bone to be calibrated (40) of said joint; The first bone end (10) comprises: The fixing shell (11), the inner wall of the fixing shell (11) is formed with a receiving groove, and the receiving groove is adapted to the joint end of the first bone to be calibrated (30). 2. The joint position calibration device according to claim 1, characterized in that, the first bone end (10) further comprises: A positioning post (12), the positioning post (12) is arranged in the accommodating groove, and the positioning post (12) is detachably penetrated in the joint end of the first bone to be calibrated (30). 3. The joint position calibration device according to claim 2, characterized in that, the joint end of the first bone to be calibrated (30) is the distal end of the femur, and the first bone end (10) further comprises: The positioning convex beam (13), the positioning convex beam (13) is arranged in the accommodating groove, and the positioning convex beam (13) is adapted to the intercondylar notch at the distal end of the femur. 4. The joint position calibration device according to claim 3, characterized in that there are multiple positioning columns (12), and the plurality of positioning columns (12) are aligned with the length direction of the positioning convex beam (13). Set for centerline symmetry. 5. The joint position calibration device according to claim 3, characterized in that, the second bone end (20) comprises a main body (22), the calibration structure (21) comprises a position marking groove, and the position Marking grooves are arranged on the outer wall of the main body (22). 6. The joint position calibration device according to claim 5, characterized in that, a calibration surface (221) is provided on the side of the main body (22) away from the first bone end (10), and the position The length direction of the marking groove is perpendicular to the calibration surface (221). 7. The joint position calibration device according to claim 6, characterized in that, the second bone end (20) further comprises a first connecting part, and the first connecting part is arranged on the main body (22) , the first bone end (10) is provided with a second connection part detachably connected with the first connection part. 8. The joint position calibration device according to claim 7, characterized in that, the first connecting part is an elastic card (23), and the elastic card (23) is provided with a locking protrusion (231), so that The second connecting part is a card slot (14) matched with the clamping protrusion (231). 9. The joint position calibrating device according to claim 8, characterized in that, the first bone end (10) also includes a relief groove, and the relief groove is arranged on the positioning convex beam ( 13) on the side away from the first bone to be calibrated (30), the locking groove (14) is arranged on the inner wall of the relief groove.