EP3624735A1 - Procédé de réalisation d'une prothèse trapézo-métacarpienne et prothèse obtenue - Google Patents
Procédé de réalisation d'une prothèse trapézo-métacarpienne et prothèse obtenueInfo
- Publication number
- EP3624735A1 EP3624735A1 EP18723847.2A EP18723847A EP3624735A1 EP 3624735 A1 EP3624735 A1 EP 3624735A1 EP 18723847 A EP18723847 A EP 18723847A EP 3624735 A1 EP3624735 A1 EP 3624735A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- metacarpal
- dimensional
- prosthesis
- trapezium
- prosthetic
- 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- Withdrawn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
Classifications
-
- 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
- A61F2/42—Joints for wrists or ankles; for hands, e.g. fingers; for feet, e.g. toes
- A61F2/4241—Joints for wrists or ankles; for hands, e.g. fingers; for feet, e.g. toes for hands, e.g. fingers
-
- 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
- A61F2/3094—Designing or manufacturing processes
- A61F2/30942—Designing or manufacturing processes for designing or making customized prostheses, e.g. using templates, CT or NMR scans, finite-element analysis or CAD-CAM techniques
-
- 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
- A61F2/42—Joints for wrists or ankles; for hands, e.g. fingers; for feet, e.g. toes
- A61F2/4261—Joints for wrists or ankles; for hands, e.g. fingers; for feet, e.g. toes for wrists
-
- 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
- A61F2/3094—Designing or manufacturing processes
- A61F2/30942—Designing or manufacturing processes for designing or making customized prostheses, e.g. using templates, CT or NMR scans, finite-element analysis or CAD-CAM techniques
- A61F2002/30948—Designing or manufacturing processes for designing or making customized prostheses, e.g. using templates, CT or NMR scans, finite-element analysis or CAD-CAM techniques using computerized tomography, i.e. CT scans
-
- 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
- A61F2/3094—Designing or manufacturing processes
- A61F2/30942—Designing or manufacturing processes for designing or making customized prostheses, e.g. using templates, CT or NMR scans, finite-element analysis or CAD-CAM techniques
- A61F2002/30952—Designing or manufacturing processes for designing or making customized prostheses, e.g. using templates, CT or NMR scans, finite-element analysis or CAD-CAM techniques using CAD-CAM techniques or NC-techniques
-
- 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
- A61F2/42—Joints for wrists or ankles; for hands, e.g. fingers; for feet, e.g. toes
- A61F2/4241—Joints for wrists or ankles; for hands, e.g. fingers; for feet, e.g. toes for hands, e.g. fingers
- A61F2002/4256—Joints for wrists or ankles; for hands, e.g. fingers; for feet, e.g. toes for hands, e.g. fingers for carpo-metacarpal joints, i.e. CMC joints
- A61F2002/4258—Joints for wrists or ankles; for hands, e.g. fingers; for feet, e.g. toes for hands, e.g. fingers for carpo-metacarpal joints, i.e. CMC joints for trapezo-metacarpal joints of thumbs
-
- 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
- A61F2/42—Joints for wrists or ankles; for hands, e.g. fingers; for feet, e.g. toes
- A61F2/4261—Joints for wrists or ankles; for hands, e.g. fingers; for feet, e.g. toes for wrists
- A61F2002/4271—Carpal bones
- A61F2002/4274—Distal carpal row, i.e. bones adjacent the metacarpal bones
- A61F2002/4276—Trapezium
Definitions
- the present invention relates to the production of a prosthesis intended to specifically replace the trapezio-metacarpal joint of a patient's hand in case of potential damage to it.
- arthroplasty The operation of replacing a human joint with a mechanical system is arthroplasty. It is a therapeutic solution commonly practiced in the case of osteoarthritis, which is a destruction or degeneration of the articular surfaces.
- osteoarthritis which is a destruction or degeneration of the articular surfaces.
- 1 arthroplasty is practiced by replacing the articular surfaces damaged by metal elements, high density polyethylene, ceramic or a sensible pyrocarbon mimic the geometrical characteristics morpho ⁇ functional joint so treated.
- Rhizarthrosis is osteoarthritis of the base of the thumb specifically affecting the trapezoid bone and the proximal end of the first metacarpal. If these joints undergo arthroplasty, there are currently high rates of failure or limited functional recovery (in the order of 8 to 21%) resulting in a loss of quality of life and replacement rates. at ten years of the order of 25% for some models of prostheses. These failure rates or limited functional recovery can be explained by the fact that the prostheses are not specific to the patient.
- a method for producing a trapezio-metacarpal prosthesis comprising a prosthetic trapezium intended to replace the damaged bone of the patient, said method comprising the following steps:
- said method is characterized in that it further comprises, between steps c) and d), the following sub-steps:
- a step of reconstructing the articulation surface of a proximal end of the first metacarpal of the trapezometacarpal joint comprising:
- the method according to the invention may further comprise, after step d), a step arranging the prosthesis in the patient such that the receiving means comprises a through hole arranged to receive an anchor screw.
- the three-dimensional impression of the trapezium and the pin can be made from powders of biocompatible materials.
- the present invention also relates to a trapezio-metacarpal prosthesis comprising a prosthetic trapezium a metacarpal pin, characterized in that it is capable of being performed according to the method according to the invention.
- the metacarpal peg may comprise two parts comprising a base and a head having the articulation surface with the prosthetic trapezium.
- the prosthesis may comprise as anchoring means an anchor screw and a series of pins, forming the anchoring means received in the receiving means of the prosthetic trapezium.
- a prosthetic trapezium comprising geometric parameters of the patient's bone makes it possible to integrate the anatomical and functional constraints of the patient and to obtain a trapezo-metacarpal prosthesis which is the most optimal for the latter.
- the prosthesis thus obtained offers the recipient patient an effective treatment of rhizarthrosis.
- FIG. 1 shows a top view of a skeleton of a hand with a trapezometacarpal prosthesis according to the invention
- FIG. 2 shows a detailed side view of the prosthesis shown in FIG. 1;
- Fig. 3 shows a three-dimensional view of the implantation of a prosthesis of Fig. 1 in the skeleton of the hand showing only the first metacarpal and trapezoidal bone;
- FIG. 4 shows a diagram illustrating the steps of the method for producing the prosthesis of FIG. 1 according to the invention
- FIG. 5 shows a three-dimensional profile view of a prosthetic trapezium of the prosthesis resulting from the process according to the invention (the steps of which are shown schematically in FIG. 4);
- Figure 6 shows a sectional view of the prosthetic trapezium of Figure 5;
- Figure 7 shows a three-dimensional view of a head of a metacarpal pin of the prosthesis of Figure 1 obtained by the method according to the invention, the steps of which are shown in Figure 4;
- Figure 8 shows a three-dimensional view in section of the base of the metacarpal pion;
- Figure 9 shows a three-dimensional view of a metacarpal pin in which its head is inserted into the base of Figure 8;
- Figure 10 shows a three-dimensional view of an anchor screw for anchoring the prosthesis of Figure 1 in the trapezoid bone
- Figure 11 shows a three-dimensional partial view of the surface of the prosthetic trapezium of Figure 5 carrying a series of pins and coming to the trapezoid bone;
- Figures 12. a) to 12. e) show steps a) and b) of the method according to the invention, from a series of medical images (Figure 12. b) acquired trapezoid bone and the metacarpal bone ( Figure 12. a)), the bones are segmented numerically (( Figure 12b), digitally reconstructed in 3D ( Figure 12d) and then meshed in 3D ( Figure 12.e)).
- the mesh models serve as a basis from which a three-dimensional digital model is produced;
- Figure 13 compares the digital volume file from the CAD (in purple in Figure 12.e and Figure 13) and the STL file (in white);
- FIGS. 14 a) to 14 c) show step c) of the method according to the invention, from the receiving and anchoring means (FIG. 14 a) positioned by CAD on the three-dimensional numerical model of the trapezium ( Figure 14.b) performed in the previous step to obtain a three-dimensional model adequate for the implementation of the prosthesis whose steps are described in Figure 4;
- Figures 15. a) to 15. c) show the final achievement of the prosthetic trapezius (Figure 15. a), the base of the metacarpal pion ( Figure 15. b) and the head of the metacarpal pion ( Figure 15. c ) by the step d) of three-dimensional printing;
- Figures 16. a) to 16. c) show the remodeling of the articular surface at the metacarpus of a trapezium (Figure 16.b and 16.c) from an anthropomorphic model of the healthy trapezius bone ( Figure 16). a) according to step 150 of the process according to the invention; Figures 17. a) and 17. b) show the extraction of the metacarpal articular surface from an anthropomorphic model used in 1 x 150 step of the method according to the invention;
- Figure 18 is the result of a numerical simulation representing a metacarpal counter reconstructed from anatomical data from medical imaging.
- CAA Three-Dimensional Assisted Design Software
- SLM Selective Laser Melting
- powders of biocompatible material for example powders of titanium alloys, such as Ti40 or TA6V, or;
- FIGS. 1 to 3 show a trapezometacarpal prosthesis 1 according to the invention.
- This trapezometacarpal prosthesis here comprises a prosthetic trapezium 1, a metacarpal piece 7 and an anchoring screw 3. It is intended to be placed between the first metacarpal 4 and the trapezoidal bone 2 of a patient.
- Figures 5 and 6 show in particular the prosthetic trapezium 1. It has a first surface 11 which is substantially complementary to the articulating surface of the metacarpal pin 7 of the trapezio-metacarpal prosthesis according to the invention.
- the prosthetic trapezium 1 also includes a second surface 12 which is complementary to a surface of the trapezoidal bone of the patient's hand. This second surface 12 is intended to allow the anchoring thereof on the trapezoidal bone by means of an anchor screw ( Figure 5).
- the prosthetic trapezium 1 comprises receiving means 10 and anchoring means.
- the receiving means 10 are a through hole extending from the medial surface 17 of the prosthetic trapezium 1 to the second surface 12 ( Figure 6).
- the opening hole comprises, here, a countersink 13 of depth 16 located on the medial surface side 17 which continues with a cylindrical orifice 14 opening at the second surface 12 and of length 15.
- the metacarpal peg 7 comprises two parts, here referred to one another: a base 5 and a head 6.
- the base 5 comprises a plate 56 having a planar upper face 52, a plane lower face 51 and a lateral peripheral face 54 substantially similar to the dimensions of the proximal end of the first metacarpal of the patient's hand to be treated (FIG. 8). .
- the head 6 of the metacarpal peg has a hinge surface 62, extending above a flat lower face 61, the dimensions of the proximal end of the first metacarpal of the hand of the patient to be treated, and having characteristics non-osteoarthritic (Figure 7).
- the head 6 further comprises a cone 60 forming means for fixing the head 6 to the base 5 of the metacarpal peg 7 (FIGS. 8 and 9).
- This tail 50 is intended to be inserted into the medullary canal of the first metacarpal of the patient's hand whose orientation and dimensions are determined from morphological parameters.
- the base 5 comprises a hole 53 intended, during an assembly of the metacarpal peg 7, to receive the cone 60 of the head 6.
- FIG. 10 and 11 show the anchoring means which may be used in the invention which may be in the form of an anchoring screw 3 (Figure 10), preferably with a series of pins 121 ( Figure 11). ).
- FIG. 10 shows in particular that the anchoring screw 3 consists of a bone thread 32, has a head 31 intended to be entirely received in the counterbore 13 of the prosthetic trapezium as illustrated in FIG. 10.
- FIG. the second surface 12 of the prosthetic trapezium comprises anchoring means, which may be for example in the form of a series of pins 121 for securing and strengthening, during implantation, the anchoring of the prosthetic trapezium 1 on Trapezoid bone of the patient.
- pins 121 extend projecting from the second surface 12 around the cylindrical orifice 14 of the receiving means 10.
- the pins 121 are of generally pyramidal shape with a polygonal or curvilinear base.
- the number of pins 121 and their size are functions of the dimensions of the prosthetic trapezium 1 made.
- anchoring such as for example small screws, hooks or other forms of pins (square-based in particular), or for example anchoring means created by a Hanging surface texturing (like Velcro for example).
- Trapezoid bone and bone of the first metacarpal are scanned by MRI or tomography (first step 110).
- the technical characteristics of medical imaging and point cloud extraction are chosen so as to discretize the cortical part of the bones ( Figures 12a) and 12b)). This acquisition makes it possible to assist in the realization of the various components of the trapezio-metacarpal prosthesis according to the invention.
- EXAMPLE 2 Three-Dimensional Reconstruction of the Trapezoidal Bone of the Trapezo-Metacarpal Joint into a Three-Dimensional Digital Model (Step 120 of the Process According to the Invention)
- the method for producing a trapezio-metacarpal prosthesis 100 comprises a second step 120 of reconstructing the trapezoid bone into a three-dimensional digital model from the series of FIG. previously acquired medical images.
- a digital volume file (adapted smoothing parameter) is then processed by a CAD software.
- Figure 13 compares the digital volume file from CAD (in purple in Figure 12e and 13) and the STL file (in white)
- EXAMPLE 3 Realization in the three-dimensional model thus obtained of receiving means 10 and anchoring means 3 (step 130 of the method according to the invention) The method of producing 100 a trapezometacarpal prosthesis according to the invention The invention provides the realization, in the three-dimensional model of the trapezoid bone, receiving means 10 and anchoring means 3,121.
- the receiving means 10, 13 and 14 and anchoring means 3 and 121 are made by CAD (FIGS. 14 a)) and then extracted by Boolean operation (addition of material or extraction of material) on the voluminal trapezium model (FIGS. )).
- FIG. 14 b) shows the positioning of the receiving and anchoring means on the volume model of the trapezium.
- EXAMPLE 4 Realization of a first surface 11 complementary to the articulating surface 62 of the metacarpal pion by remodeling from an anthropomorphic model of the trapezoid bone derived from healthy trapezoidal images (step 150 of the method according to US Pat. invention)
- the invention comprises, prior to the three-dimensional printing step 140, an embodiment step 150 in the three-dimensional model thus obtained of the first surface 11.
- the articular surface between the trapezoidal bone and the metacarpal bone is remodeled from an anthropomorphic model of the trapezoidal bone derived from healthy trapezoidal images ( Figures 16b) and 16c)).
- Remodeling is done by extracting the articular surface of an anthropomorphic model of the trapezoid bone from at least one healthy trapezius (Figure 17b).
- the surface 11 shown in FIGS. 16 (b) and 16 (c) is then positioned in the digital model in place of the non-healthy articular surface (FIG. 16 (b)).
- a digital volume file is then produced by filling and / or by Boolean operation (addition or withdrawal) under a CAD software (FIG. 16c).
- a digital volume file is then produced by filling and / or by Boolean operation (addition / withdrawal) under a CAD software.
- Step 150 of the method according to the invention makes it possible to adapt the first rough surface 11 (step 120) and to produce, in the three-dimensional numerical model thus obtained, a surface 11 remodeled and complementary to the hinge surface 62 of the pion metacarpal from an anthropomorphic model of trapezoid bone from images of healthy trapezius bone. And so it corrects the deformities due to rhizarthrosis itself.
- the invention comprises, prior to the three-dimensional printing step 140, a reconstruction step 160 in a digital model of the articulation surface 62 of a proximal end. of the first metacarpal.
- the metacarpal peg 7 is in two parts: a head 6 made of polymer and a base 5 made of metal.
- head 6 and the base 5 are glued to each other, forming a one-piece assembly.
- This is possible by using, for the three-dimensional printing of the metacarpal pin 7, a multi-nozzle print head, one of which is dedicated to the powder of metallic material and another of the nozzles to the polymer powder.
- the head 6 and the base 5 are snapped into one another to form the metacarpal peg 7.
- EXAMPLE 6 Three-dimensional printing of the prosthetic trapezium (1) from the three-dimensional model from the previous step (step 140 of the method according to the invention).
- the method of producing a trapezometacarpal prosthesis 100 according to the invention comprises, following step 150 (Example 4), a three-dimensional printing step 140 of the prosthetic trapezium 1 from the three-dimensional model thus obtained.
- FIG. 15a shows the realization by three-dimensional printing of the trapezoid from the three-dimensional model resulting from step 150 (see Example 4) by SLM technology if the trapezium is made of metal alloys and by SLA technology if the trapezium is made of polymeric resin transparent photosensitive.
- This three-dimensional printing by SLM technology can be carried out using powders of alloys of titanium, such as Ti40 or TA6V, or stainless steel powders, such as 316LVM.
- EXAMPLE 7 Use of the trapezio-metacarpal prosthesis according to the invention obtained in Example 6 and postoperative tests using such a prosthesis.
- the trapezio-metacarpal prosthesis according to the invention is tested in vivo during an arthroplasty operation.
- the choice of the prosthetic trapezium and the metacarpal counter is made according to the preferences of the surgeon who will perform the operation to have the best match with the joint during operation. Different metacarpal pawn morphologies are proposed (made according to steps 160 and 170) with different sizes. The metacarpal counter is chosen in line with the defined prosthetic trapezium.
- he then performs a trapezectomy. Then, he performs a resection of the proximal end of the first metacarpal, followed by a preparation of the medullary canal of the latter; then, the surgeon sets up the base 5 of the metacarpal peg 7 by introducing the tail 50 into the prepared medullary canal;
- the head 6 is then put in place by introducing the cone 60 of the head 6 into the blind hole 53 of the base 5;
- the practitioner sets up the prosthetic trapezium 1 so that the second surface 12 comes into contact with the trapezoid bone; - It corrects the three-dimensional orientation of the prosthetic trapezium 1 so that the first surface 11 of the prosthetic trapezium comes opposite the articulation surface 62 of the metacarpal pin 7;
- the thread 32 is then inserted into the trapezoid bone to perform the anchoring of the prosthetic trapezium 1 with the latter;
- the prosthetic trapezium 1 comprises anchoring means 121, the latter penetrate largely into the trapezoidal bone during a tightening of the anchoring screw 3;
- Figures 19 a to c show that the prosthesis according to the invention allows the complete recovery of the kinematic extent of the thumb.
Landscapes
- Health & Medical Sciences (AREA)
- Orthopedic Medicine & Surgery (AREA)
- Engineering & Computer Science (AREA)
- Vascular Medicine (AREA)
- Animal Behavior & Ethology (AREA)
- Oral & Maxillofacial Surgery (AREA)
- Biomedical Technology (AREA)
- Heart & Thoracic Surgery (AREA)
- Cardiology (AREA)
- Life Sciences & Earth Sciences (AREA)
- Transplantation (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Physics & Mathematics (AREA)
- Geometry (AREA)
- Manufacturing & Machinery (AREA)
- Prostheses (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR1754288A FR3066382A1 (fr) | 2017-05-16 | 2017-05-16 | Procede de realisation d’une prothese trapezo-metacarpienne et prothese obtenue |
| PCT/EP2018/062787 WO2018210953A1 (fr) | 2017-05-16 | 2018-05-16 | Procédé de réalisation d'une prothèse trapézo-métacarpienne et prothèse obtenue |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| EP3624735A1 true EP3624735A1 (fr) | 2020-03-25 |
Family
ID=59811447
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP18723847.2A Withdrawn EP3624735A1 (fr) | 2017-05-16 | 2018-05-16 | Procédé de réalisation d'une prothèse trapézo-métacarpienne et prothèse obtenue |
Country Status (3)
| Country | Link |
|---|---|
| EP (1) | EP3624735A1 (fr) |
| FR (1) | FR3066382A1 (fr) |
| WO (1) | WO2018210953A1 (fr) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR3078418B1 (fr) * | 2018-02-26 | 2021-05-14 | Univ De Technologie De Compiegne | Procede de fabrication d'un objet complexe de substitution a partir d'un objet reel |
| CN111772885B (zh) * | 2020-08-20 | 2025-05-06 | 宁波市第六医院 | 一种部分置换大多角骨假体及其制作方法 |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5702469A (en) * | 1996-01-18 | 1997-12-30 | Kinetikos Medical, Inc. | Thumb joint prosthesis and related method of implantation |
| US6126690A (en) * | 1996-07-03 | 2000-10-03 | The Trustees Of Columbia University In The City Of New York | Anatomically correct prosthesis and method and apparatus for manufacturing prosthesis |
| US20110004317A1 (en) * | 2007-12-18 | 2011-01-06 | Hacking Adam S | Orthopaedic implants |
| US8641770B2 (en) * | 2012-01-26 | 2014-02-04 | Aptis Medical, Llc | Prosthesis for the basal joint of the thumb |
-
2017
- 2017-05-16 FR FR1754288A patent/FR3066382A1/fr not_active Withdrawn
-
2018
- 2018-05-16 EP EP18723847.2A patent/EP3624735A1/fr not_active Withdrawn
- 2018-05-16 WO PCT/EP2018/062787 patent/WO2018210953A1/fr not_active Ceased
Also Published As
| Publication number | Publication date |
|---|---|
| WO2018210953A1 (fr) | 2018-11-22 |
| FR3066382A1 (fr) | 2018-11-23 |
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