EP3762932A2 - Patientenspezifisches arthroplastiksystem - Google Patents
Patientenspezifisches arthroplastiksystemInfo
- Publication number
- EP3762932A2 EP3762932A2 EP19809140.7A EP19809140A EP3762932A2 EP 3762932 A2 EP3762932 A2 EP 3762932A2 EP 19809140 A EP19809140 A EP 19809140A EP 3762932 A2 EP3762932 A2 EP 3762932A2
- Authority
- EP
- European Patent Office
- Prior art keywords
- data
- preoperative
- patient
- knee
- ligament balancing
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Withdrawn
Links
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Classifications
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Definitions
- each part of the prosthesis whether it is a surface replacement or a guided endoprosthesis, they are available in different sizes, all of which are compatible with each other. Due to this modular design of the prostheses, it is possible to intraoperatively compensate for the dimensions of the patient’s personal knee joint.
- FIGs. 15A and 15B illustrate a surgical pin positioning block according to an embodiment of the present invention.
- FIGs. 16A and 16B illustrate a surgical pin positioning block according to another embodiment of the present invention.
- objectives associated with one or more of the embodiments described in the present disclosure may include:
- the data recorded by the ligament balancing tool can be archived accordingly via an interface from the tool to a data acquisition system connected to a hospital.
- a data acquisition system connected to a hospital.
- a special purpose plastic may be envisioned for producing the inlay (including the platforms, scissor arm structure, and sliding surface) as a packaged sterile single-use part.
- Each of left platform 104 and right platform 106 may be supported by a scissor arm structure 112 and 108, respectively, and an underlying coil spring overlying (and attached to inlay 102 at) respective recessed sliding surfaces 116 and 118.
- a given platform may be supported in an up-right position by an elastic material such as coil spring.
- Fig. 2 presents a right side view of the ligament balancing tool according to an embodiment of the present invention.
- Right platform 106 may be fixed above scissor arm structure 108 and coil spring 110. Pressure may be individually applied to each platform causing the platforms to move from an extended (or fully upright) position to a depressed position.
- Fig. 3 presents a top view of the ligament balancing tool according to an embodiment of the present invention.
- the ligament balancing tool 100 may be placed between the femur and the tibia such that the left and right platforms 104 and 106 are beneath the femur (or femoral component) and inlay 102 is above the tibia (or tibial baseplate).
- Left platform 104 and right platform 106 further includes indentation 130 and indentation 132, respectively.
- Measurements may be repeated on a“post-prosthetic” knee to create the second tension profile for comparison with the reference tension profile.
- measurement signals from the ligament balancing tool may be populated to“post” medial height 406 and“post” lateral height 408 for reference angles 410 on the right region of the user interface.
- The“pre” and“post” measurements at the reference angles 410 may be compared to determine a degree of difference between the tension profiles.
- a surgeon may be able to determine or adjust medial and lateral heights for the knee to achieve appropriate stability and tension state.
- CT computed tomography
- MRI magnetic resonance imaging
- An evaluation may further include a survey for preferences and lifestyles (e.g., current activities and capabilities) and demands (e.g., desired kinds of activities and capabilities).
- a CT or MRI scan may be performed to obtain the proper shape of the femoral and tibial surface.
- An EMG testing may also be performed to evaluate the muscular strength for kinematic evaluation. Long leg x- rays can be performed to achieve an imagination of the individual kinematics.
- An avatar may be generated from the testing and scans to show three-dimensional movement of the knee and the adjacent joints. Additionally, when combined with gait analysis, a complete set of data may be used to model an individual movement.
- the ligament balancing tool may be used to additionally improve the balance situation of the soft tissue.
- the results of the ligament balancing tool can give an imagination to change the soft tissues situation intraoperatively by re-cutting or releasing.
- Progress of the treatment can be surveilled by regular postoperative checkups by re-performing one or more of the preoperative evaluations.
- Such postoperative data may be used to further improve the recommendations for other patients
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- Orthopedic Medicine & Surgery (AREA)
- Molecular Biology (AREA)
- Oral & Maxillofacial Surgery (AREA)
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- Pathology (AREA)
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- Prostheses (AREA)
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Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US15/914,392 US11229484B2 (en) | 2018-01-26 | 2018-03-07 | Patient-specific arthroplasty system |
| PCT/IB2019/001069 WO2020008270A2 (en) | 2018-03-07 | 2019-03-06 | Patient-specific arthroplasty system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| EP3762932A2 true EP3762932A2 (de) | 2021-01-13 |
Family
ID=68655567
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP19809140.7A Withdrawn EP3762932A2 (de) | 2018-03-07 | 2019-03-06 | Patientenspezifisches arthroplastiksystem |
Country Status (10)
| Country | Link |
|---|---|
| EP (1) | EP3762932A2 (de) |
| JP (1) | JP2021516115A (de) |
| KR (1) | KR20200130691A (de) |
| AU (1) | AU2019298826A1 (de) |
| BR (1) | BR112020018159A2 (de) |
| CA (1) | CA3092912A1 (de) |
| IL (1) | IL277021A (de) |
| MX (1) | MX2020009317A (de) |
| WO (1) | WO2020008270A2 (de) |
| ZA (1) | ZA202005220B (de) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20220336079A1 (en) * | 2021-04-16 | 2022-10-20 | Medfit International Ag | System and method for functional stability planning of replacement joints |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20140013565A1 (en) * | 2012-07-10 | 2014-01-16 | Eileen B. MacDonald | Customized process for facilitating successful total knee arthroplasty with outcomes analysis |
| WO2017185108A2 (de) * | 2016-04-28 | 2017-11-02 | Medfit Beratungs-Und Beteiligunges.M.B.H | Dynamic ligament balancing system (dlb) |
-
2019
- 2019-03-06 AU AU2019298826A patent/AU2019298826A1/en not_active Abandoned
- 2019-03-06 CA CA3092912A patent/CA3092912A1/en active Pending
- 2019-03-06 WO PCT/IB2019/001069 patent/WO2020008270A2/en active Application Filing
- 2019-03-06 BR BR112020018159-5A patent/BR112020018159A2/pt not_active IP Right Cessation
- 2019-03-06 EP EP19809140.7A patent/EP3762932A2/de not_active Withdrawn
- 2019-03-06 JP JP2020546960A patent/JP2021516115A/ja active Pending
- 2019-03-06 MX MX2020009317A patent/MX2020009317A/es unknown
- 2019-03-06 KR KR1020207025960A patent/KR20200130691A/ko active Search and Examination
-
2020
- 2020-08-21 ZA ZA2020/05220A patent/ZA202005220B/en unknown
- 2020-08-31 IL IL277021A patent/IL277021A/en unknown
Also Published As
| Publication number | Publication date |
|---|---|
| ZA202005220B (en) | 2021-08-25 |
| JP2021516115A (ja) | 2021-07-01 |
| KR20200130691A (ko) | 2020-11-19 |
| WO2020008270A2 (en) | 2020-01-09 |
| MX2020009317A (es) | 2021-04-12 |
| IL277021A (en) | 2020-10-29 |
| CA3092912A1 (en) | 2020-01-09 |
| WO2020008270A3 (en) | 2020-03-05 |
| AU2019298826A1 (en) | 2020-09-17 |
| BR112020018159A2 (pt) | 2021-02-02 |
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