EP3852652A1 - Guide for positioning an orthopaedic guide pin on a bone structure - Google Patents
Guide for positioning an orthopaedic guide pin on a bone structureInfo
- Publication number
- EP3852652A1 EP3852652A1 EP19790673.8A EP19790673A EP3852652A1 EP 3852652 A1 EP3852652 A1 EP 3852652A1 EP 19790673 A EP19790673 A EP 19790673A EP 3852652 A1 EP3852652 A1 EP 3852652A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- guide
- support member
- positioning guide
- positioning
- base
- 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- Withdrawn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
- 210000000988 bone and bone Anatomy 0.000 title claims abstract description 45
- 241001653121 Glenoides Species 0.000 claims abstract description 51
- 239000007943 implant Substances 0.000 claims abstract description 11
- 238000002360 preparation method Methods 0.000 claims abstract description 10
- 230000000399 orthopedic effect Effects 0.000 claims description 44
- 238000002513 implantation Methods 0.000 claims description 8
- 210000000056 organ Anatomy 0.000 claims 1
- 238000005553 drilling Methods 0.000 description 7
- 238000003801 milling Methods 0.000 description 3
- 230000002093 peripheral effect Effects 0.000 description 3
- 238000004873 anchoring Methods 0.000 description 2
- 238000005056 compaction Methods 0.000 description 2
- 238000003384 imaging method Methods 0.000 description 2
- 230000006978 adaptation Effects 0.000 description 1
- 239000008280 blood Substances 0.000 description 1
- 210000004369 blood Anatomy 0.000 description 1
- 230000008030 elimination Effects 0.000 description 1
- 238000003379 elimination reaction Methods 0.000 description 1
- 230000000135 prohibitive effect Effects 0.000 description 1
- 210000001991 scapula Anatomy 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Classifications
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/16—Bone cutting, breaking or removal means other than saws, e.g. Osteoclasts; Drills or chisels for bones; Trepans
- A61B17/17—Guides or aligning means for drills, mills, pins or wires
- A61B17/1739—Guides or aligning means for drills, mills, pins or wires specially adapted for particular parts of the body
- A61B17/1778—Guides or aligning means for drills, mills, pins or wires specially adapted for particular parts of the body for the shoulder
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B2017/0046—Surgical instruments, devices or methods, e.g. tourniquets with a releasable handle; with handle and operating part separable
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B90/00—Instruments, implements or accessories specially adapted for surgery or diagnosis and not covered by any of the groups A61B1/00 - A61B50/00, e.g. for luxation treatment or for protecting wound edges
- A61B90/03—Automatic limiting or abutting means, e.g. for safety
- A61B2090/033—Abutting means, stops, e.g. abutting on tissue or skin
- A61B2090/036—Abutting means, stops, e.g. abutting on tissue or skin abutting on tissue or skin
Definitions
- the present invention relates to a positioning guide for positioning an orthopedic guide pin on a bone structure.
- the invention lies in the field of positioning an orthopedic guide pin on a bone structure, in particular in preparation for implantation on the bone structure of an implant, with a particular and non-limiting application in the positioning of '' an orthopedic guide pin on a glenoid in preparation for implantation on the glenoid of a glenoid implant of a shoulder prosthesis.
- an orthopedic guide pin previously anchored in the bone structure to then serve as a guide for one or more preparation tools, such as tools milling tools, cutting tools, drilling or drilling tools and compaction tools.
- a difficulty for the surgeon is to ensure optimal positioning of the orthopedic guide pin on the bone structure, in particular to guarantee a stable and robust anchoring of the orthopedic guide pin, by minimizing damage to the bone structure which must then receive anchorages from the implant, it being further noted that the positioning of the guide pin determines the positioning of the final implant.
- this operation of positioning the orthopedic guide pin on the glenoid is complex due to the reduced dimensions of the glenoid, so that it is conventional to use a positioning guide which comes to bear on the glenoid and which has a passage orifice provided for a passage and a guide of the orthopedic guide pin.
- a positioning guide specific to a patient that is to say a positioning guide for single use, specially manufactured to adapt to the relevant bone structure of a patient, based on preoperative images and / or on a bone structure mold to allow the surgeon to establish the desired orientation for the orthopedic guide pin and therefore to design the specific positioning guide adapted for patient and able to provide the desired orientation.
- patient-specific positioning guides are particularly expensive, which can be prohibitive for certain regions of the world, without count the necessary management and elimination of such specific positioning guides which constitute after operation waste in contact with the blood, thus contributing to an additional increase in costs and to a non-negligible ecological impact.
- a non-specific positioning guide as described in particular in document FR3057454, which is in the form of a base having a lower face intended to bear at least partially on the glenoid and crossed by a passage orifice provided for a passage of the orthopedic guide pin, with a grip handle fixed on the base to allow the surgeon to manipulate and position the base on the glenoid.
- a non-specific positioning guide does not make it possible to easily reproduce a preoperative planning carried out beforehand with the aid of the usual imaging tools such as a scanner, an X-ray or an MRI imaging.
- this type of non-specific positioning guide calls on the surgeon's dexterity to ensure the positioning of the base on the glenoid in order to be able to guide the orthopedic guide pin according to the desired orientation, with the disadvantage lack of precision and ultimately poor orientation of the orthopedic guide pin.
- the present invention aims to solve the aforementioned drawbacks, by proposing a non-specific positioning guide, that is to say for use for different patients, which provides precise positioning on the bone structure and therefore precise orientation. of the orthopedic guide pin.
- the positioning guide for positioning an orthopedic guide pin on a bone structure
- the positioning guide comprising a base having, on the one hand, an upper face and an opposite lower face intended to take support at least partially on the bone structure and, on the other hand, a passage opening opening in the upper face and in the lower face and provided for a passage of the orthopedic guide pin
- the positioning guide is remarkable in that it comprises at least two support members mounted mobile in guide holes provided in the base and opening into the underside of the base, where each support member has a lower termination facing the side of the underside and is selectively movable between a retracted position at least partially inside the corresponding guide hole , and at least one deployed position in which the support member protrudes from the underside by a predefined deployment distance in order to have a projecting lower termination intended to bear on the bone structure to provide an inclination of the base vis-à-vis the bone structure, where each support member, when in a deployed position, is blocked in the direction of a retreat towards the retracted position.
- the surgeon can, based on taking preoperative images (for example CT images, radiographs or MRI images) and / or on a mold of the bone structure, establish the desired orientation of the orthopedic guide pin and then deduce the positioning of the positioning guide on the bone structure to provide said desired orientation, which will make it possible to deduce the inclination of the base vis-à-vis the bone structure and therefore the position of each support member, either in the retracted position or in the deployed position.
- preoperative images for example CT images, radiographs or MRI images
- the positioning guide can be used for many patients, and it will be adapted to each patient, based on preoperative images and / or on a mold of the bone structure, by playing on the position of each support member.
- each support member when it is in a deployed position, is locked in this deployed position in the direction where it cannot retreat (that is to say enter the guide hole) when this support member comes to bear against the bone structure, except of course that the surgeon acts on this support member (in particular by means of a dedicated tool) to unlock it and thus roll it back.
- the inclination of the base with respect to the bone structure corresponds to an inclination in a three-dimensional space, which includes for example an inclination in a frontal plane (conventionally called “inclination” in the surgical field) and an inclination in a horizontal plane (conventionally called “anteversion” in the surgical field).
- this inclination can be defined for example by two inclination angles in two respective reference planes, and in particular by an inclination angle in a frontal plane and an inclination angle in a horizontal plane (or anteversion angle ).
- the positioning guide comprises at least three support members, and in particular three or four support members.
- the number of support points on the bone structure is multiplied and therefore the possibilities of inclination of the base with respect to the bone structure and therefore the precision in the orientation of the orthopedic guide pin.
- each support member is selectively movable between the retracted position and several deployed positions associated with separate deployment distances. In fact, with several positions deployed per support member, the possibilities of inclination of the base vis-à-vis the bone structure and therefore the precision in the orientation of the orthopedic guide pin are also multiplied.
- each support member is selectively displaceable by screwing, said support member being provided with a threaded rod cooperating with a threaded portion provided in the corresponding guide hole.
- each support member is moved from its retracted position to a deployed position by screwing, in particular providing that each screwing revolution corresponds to a given step in the deployment distance, for example a step between 0.25 and 1 , 5 millimeters. It is of course conceivable that the surgeon chooses to perform, at a given moment and for a chosen support member, only a quarter turn or a half turn of screwing. It should be noted that such a screwing prohibits the recoil of the support members, in the direction of reentry into the guide holes, when the support members come to bear against the bone structure.
- each support member is selectively displaceable by sliding, said support member being provided with at least one lock cooperating with locking notches provided in the corresponding guide hole, or vice versa said support member support being provided with locking notches cooperating with at least one lock provided in the corresponding guide hole, each locking notch being associated with a retracted position or with a deployed position.
- each support member is moved from its retracted position to a position deployed by sliding by pushing on it, and passing from one locking notch to the other as the push is made, in particular providing that each passing from one locking notch to the other corresponds to a given step in the deployment distance, for example a step between 0.25 and 1.5 millimeters.
- the locking notches are unidirectional, which prevent the recoil of the support members, in the direction of reentry into the guide holes, when the support members come to bear against the bone structure.
- each support member, in its retracted position has its lower termination which does not protrude from the underside of the base.
- each support member may have, in its retracted position, its lower termination which protrudes slightly from the underside of the base, the important thing being that the surgeon knows the locations and the positions of the support members.
- each support member has an upper end, opposite the lower end, and each guide hole opens into the upper face of the base so that said upper end is accessible from the side of said upper face.
- the support members are accessible from above to be able to move them, even in situation on the bone structure.
- the support members are accessible laterally so that they can be moved.
- the support members are accessible only from below (that is to say on the side of the lower face) in order to be able to move them, which means that the support members must first be moved before affixing the positioning guide on the bone structure.
- each support member In the case of support members accessible from above, it is advantageous for the upper termination of each support member to be provided with a footprint, male or female, capable of cooperating with a tool intended to move the member d 'support.
- each support member is blocked in the direction of an exit from the side of the upper face of the base, by means of a stop disposed inside the corresponding guide hole and located opposite its upper termination.
- Such a stop can in particular be detachably mounted inside the corresponding guide hole.
- such a removable stop may be a split ring or a circlip which will be wedged inside the guide hole.
- the base has at least one window disposed between the guide holes, said window being open on the upper face and the lower face.
- One or more such windows provide one or more openings to improve visibility for the surgeon.
- the positioning guide further comprises a gripping handle fixed on the base, to allow its manual manipulation by the surgeon.
- the gripping handle is fixed to the passage orifice, and said gripping handle is tubular and opens into the passage orifice to allow the passage of the orthopedic guide pin inside the sleeve of gripping and through the passage opening.
- the grip handle is offset vis-à-vis the passage opening.
- the underside of the base is flat, convex or concave.
- the invention also relates to a positioning guide as described above, for positioning an orthopedic guide pin on a glenoid in preparation for implantation on the glenoid of a glenoid implant of a prosthesis d 'shoulder.
- it may be a positioning guide for positioning an orthopedic guide pin on a bone articulation structure in preparation for implantation on the bone articulation structure of an implant.
- '' a joint prosthesis.
- FIG. 1 is a schematic perspective view of a first positioning guide according to the invention, in situation on a glenoid;
- FIG. 2 is a schematic perspective view from below of the first positioning guide of Figure 1;
- - Figure 3 is a schematic perspective view from above of the first positioning guide of Figure 1;
- Figure 4 is a schematic bottom view of the first positioning guide of Figure 1;
- Figure 5 is a schematic top view of the first positioning guide of Figure 1;
- FIG. 6 is a schematic perspective view of a single support member for the first positioning guide of Figure 1;
- FIG. 7 is a schematic perspective view of an orthopedic guide pin adapted for the first positioning guide of Figure 1;
- FIG. 8 is a schematic perspective view of an orthopedic guide pin implanted in the glenoid of Figure 1 after positioning by means of the first positioning guide and after removal of this first positioning guide;
- FIG. 9 is a schematic perspective view of a second positioning guide according to the invention, in situation on a glenoid;
- FIG. 10 is a schematic perspective view from above of the second positioning guide of Figure 9;
- FIG. 11 is a schematic perspective view from below of the second positioning guide of Figure 9;
- FIG. 12 is a schematic side view of the second positioning guide of Figure 9 in situation on the glenoid, allowing to visualize two support members in the deployed position and pressing on the glenoid;
- FIG. 13 is a schematic cross-sectional view of the second positioning guide of Figure 9 in position on the glenoid, to view a support member in the deployed position and another support member in the retracted position to provide a inclination of the base with respect to the glenoid;
- FIG. 14 is a schematic perspective view of the second positioning guide of Figure 9 in position on the glenoid, with an orthopedic guide pin implanted and oriented in the glenoid by means of the second positioning guide;
- FIG. 15 is a schematic perspective view of an orthopedic guide pin implanted in the glenoid after positioning by means of the first positioning guide or the second positioning guide, and also of a milling tool which is guided by the orthopedic guide pin.
- the positioning guide 1, 10 is a positioning guide for positioning a orthopedic guide pin BR on a bone structure consisting of a GL glenoid in preparation for implantation on the GL glenoid of a glenoid implant of a shoulder prosthesis.
- the positioning guide 1, 10 comprises a base 2 having two opposite faces, namely:
- the upper face 20 is substantially flat and orthogonal to the main axis AP described below.
- the lower face 21 is planar and orthogonal to this main axis AP.
- the lower face 21 is convex (or curved) while being centered on this main axis AP.
- the base 2 also has a peripheral face 22 defining the periphery of the base 2, where this peripheral face 22 is of generally cylindrical shape in the two examples illustrated.
- This base 2 also has a passage orifice 23 passing through the base 2 in its thickness and thus opening into the upper face 20 and into the lower face 21.
- This passage orifice 23 is provided for a passage of the orthopedic guide pin BR and it extends along a main axis AP.
- the passage orifice 23 is in the form of a smooth bore centered on this main axis AP.
- This base 2 also has several guide holes 24 passing through the base 2 in its thickness and thus opening into the face upper 20 and in the lower face 21. These guide holes 24 extend along guide axes parallel to the main axis AP.
- the guide holes 24 are four in number and they are distributed at 90 degrees from each other around the main axis AP, with an upper guide hole and a diametrically lower guide hole opposite on either side of the main axis AP and with a right rear guide hole and a left rear guide hole diametrically opposite on either side of the main axis AP.
- the second positioning guide 10 there are three guide holes 24 with a right rear guide hole and a left rear guide hole diametrically opposite on either side of the main axis AP and with a hole guide above 90 degrees of the other two guide holes 24 around the main axis AP.
- the second positioning guide 10 does not have the lower guide hole.
- each guide hole 24 has successively, starting from the upper face 20 in the direction of the lower face 21:
- This base 2 also has windows 25, 250, 251 passing through the base 2 in its thickness and thus opening into the upper face 20 and into the lower face 21. These windows 25, 250, 251 are arranged between the guide holes 24 .
- the windows 25 are similar in size and shape, there are four of them and they are distributed 90 degrees apart from each other around the main axis AP.
- the windows 250, 251 are of different shapes and dimensions, they are two in number and they include a large lower window 250 and extending between the right rear guide hole and the guide hole rear left and opposite the upper guide hole, and a small upper window 251 extending between the upper guide hole and the through hole 23.
- the latter also comprises a grip handle 5, 50 fixed on the base 2.
- the grip handle 5 is fixed to the passage orifice 23, and this grip handle 5 is tubular along an axis aligned with the main axis AP, so that this grip handle 5 opens into the passage orifice 23 to allow passage of the orthopedic guide pin BR inside the grip handle 5 and through the passage orifice 23.
- the gripping handle 50 is offset relative to the passage orifice 23, and it is in particular provided on one side of the base 2 to extend along an inclined axis vis -to the main axis AP.
- This grip handle 50 can in particular be screwed into a threaded orifice 28 provided for this purpose in the base 2; two tapped holes 28 can be provided on the right and on the left depending on whether the glenoid GL corresponds to a left or right shoulder.
- the positioning guide 1, 10 further comprises several support members 3 movably mounted in the respective guide holes 24 of the base 2, with therefore a support member 3 per guide hole 24.
- the first positioning guide 1 comprises four support members 3 including an upper support member, a lower support member, a right posterior support member and a left posterior support member.
- the second positioning guide 10 comprises three support members 3 including an upper support member, a right posterior support member and a left posterior support member.
- each support member 3 is in the form of a screw and comprises:
- An upper termination 30 forming an enlarged screw head and provided with an imprint 31 (for example a female imprint) suitable for cooperating with a screwdriver type tool for screwing / unscrewing the support member 3;
- an imprint 31 for example a female imprint
- a threaded rod 32 extending the upper end 30 and which ends in a free end forming a lower end 33 possibly of domed or hemispherical shape.
- Each support member 3 is introduced from above, that is to say on the side of the upper face 20, inside a guide hole 24, until the threaded rod 32 initiates a screwing into the threaded outlet portion 243 of the guide hole 24 and that the upper termination 30 is located below the annular notch 241.
- a removable stop 4 in the form of a split ring or circlips, is detachably mounted inside the annular notch 241 of each guide hole 24, above the upper termination 30 of the support member 3.
- this removable stop 4 is located opposite the upper termination 30 of the support member 3 and thus makes it possible to block the support member 3 in the direction of a exit from the side of the upper face 20 of the base 2. In other words, these removable stops 4 prevent the support members from coming out from above.
- the lower end 33 is turned towards the side of the lower face 21, while the upper end 30 is turned towards the side of the upper face 20. Furthermore, the upper end 30 is accessible from the side of the upper face 20, so that 'It is possible to engage a tool in the guide hole 24 from above to come to cooperate with the cavity 31.
- Each support member 3 is therefore selectively displaceable by screwing between:
- each deployed position the support member 3 protrudes from the underside 21 by a predefined deployment distance DD (and not zero) in order to have a projecting lower termination 33 intended to rest on the GL glenoid to at least partially take off (or spread) the lower face 21 of the GL glenoid, which will make it possible to adjust an inclination of the base with respect to the GL glenoid and therefore to adjust an orientation of the main axis AP and therefore of the orthopedic guide pin BR.
- DD deployment distance
- this inclination can be defined by at least two angles of inclination in two respective reference planes, such as by example a first angle of inclination in a frontal plane and a second angle of inclination in a horizontal plane (or anteversion angle).
- the deployed positions are associated with separate DD deployment distances, and it suffices to screw the support member 3 to move it and thus to move it from its retracted position until reaching the desired deployed position which corresponds to a distance deployment deployment desired and associated with a desired inclination.
- the surgeon can thus adjust the orientation of the main axis AP and therefore of the orthopedic guide pin BR.
- a support member 3 (the one at the bottom) is in the retracted position, while another support member 3 (the one at the top) is in the deployed position, and in particular at the maximum of its deployment, which provides an inclination of the base 2 with respect to the glenoid GL at a first angle of inclination IN in a frontal plane. It is conceivable to provide another inclination, in another reference plane, by playing on the deployment of the other support member 3, such as for example according to a second angle of inclination in a horizontal plane (called angle of anteversion).
- the base 20 can on this subject present on its peripheral face 22 a mark to position the reference planes once in place on the glenoid GL, such as for example the mark "UP" visible in FIG. 2.
- the surgeon precisely positions the orthopedic guide pin BR in the glenoid GL while being guided with the orifice 23, and he anchors this orthopedic guide pin BR in the glenoid GL according to the orientation desired.
- the orthopedic guide pin BR has a threaded end EF for its bone anchoring.
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR1858525A FR3086158B1 (en) | 2018-09-20 | 2018-09-20 | POSITIONING GUIDE OF AN ORTHOPEDIC GUIDING PIN ON A BONE STRUCTURE |
PCT/FR2019/052181 WO2020058633A1 (en) | 2018-09-20 | 2019-09-18 | Guide for positioning an orthopaedic guide pin on a bone structure |
Publications (1)
Publication Number | Publication Date |
---|---|
EP3852652A1 true EP3852652A1 (en) | 2021-07-28 |
Family
ID=65243739
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP19790673.8A Withdrawn EP3852652A1 (en) | 2018-09-20 | 2019-09-18 | Guide for positioning an orthopaedic guide pin on a bone structure |
Country Status (5)
Country | Link |
---|---|
US (1) | US11253276B2 (en) |
EP (1) | EP3852652A1 (en) |
AU (1) | AU2019342299A1 (en) |
FR (1) | FR3086158B1 (en) |
WO (1) | WO2020058633A1 (en) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US11224446B2 (en) * | 2019-06-20 | 2022-01-18 | Imam Abdulrahman Bin Faisal University | Supracondylar bullet sleeve |
CA3143137A1 (en) * | 2019-06-21 | 2020-12-24 | Manish Shah | A jig for guiding placement of glenoid component of the implant in shoulder replacement surgery |
Family Cites Families (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5769856A (en) * | 1996-06-24 | 1998-06-23 | Osteonics Corp. | Drill guide and implant method |
GB2452990A (en) * | 2007-09-24 | 2009-03-25 | Surgicraft Ltd | A retaining device and apparatus for an implant or prosthetic device |
EP2397096B1 (en) * | 2007-11-02 | 2013-09-25 | Biomet C.V. | Bending tool for shaping a bone plate |
KR20130137153A (en) * | 2010-08-13 | 2013-12-16 | 스미스 앤드 네퓨, 인크. | Surgical guides |
WO2013060844A1 (en) | 2011-10-28 | 2013-05-02 | Materialise N.V. | Shoulder base plate coverage and stability |
EP2770920B1 (en) | 2011-10-28 | 2017-07-19 | Materialise N.V. | Shoulder guides |
CA2927811C (en) | 2013-10-17 | 2022-07-05 | Imascap Sas | Methods, systems and devices for pre-operatively planned glenoid placement guides and uses thereof |
US10188408B2 (en) | 2016-10-18 | 2019-01-29 | Fournitures Hospitalieres Industrie | Glenoid cavity bone preparation set for setting a shoulder prosthesis, and method for implanting a shoulder prosthesis |
CN110650694B (en) * | 2017-05-23 | 2023-04-18 | 拜欧米特制造有限责任公司 | Offset guide |
-
2018
- 2018-09-20 FR FR1858525A patent/FR3086158B1/en active Active
-
2019
- 2019-09-18 WO PCT/FR2019/052181 patent/WO2020058633A1/en unknown
- 2019-09-18 EP EP19790673.8A patent/EP3852652A1/en not_active Withdrawn
- 2019-09-18 AU AU2019342299A patent/AU2019342299A1/en not_active Abandoned
-
2021
- 2021-03-22 US US17/208,396 patent/US11253276B2/en active Active
Also Published As
Publication number | Publication date |
---|---|
US11253276B2 (en) | 2022-02-22 |
FR3086158B1 (en) | 2021-07-16 |
FR3086158A1 (en) | 2020-03-27 |
US20210204967A1 (en) | 2021-07-08 |
WO2020058633A1 (en) | 2020-03-26 |
AU2019342299A1 (en) | 2021-04-29 |
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