WO2020256672A1 - Plaque d'humérus distale à verrouillage poly-axial entièrement anatomique conçue pour des quadrupèdes - Google Patents

Plaque d'humérus distale à verrouillage poly-axial entièrement anatomique conçue pour des quadrupèdes Download PDF

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Publication number
WO2020256672A1
WO2020256672A1 PCT/TR2020/050287 TR2020050287W WO2020256672A1 WO 2020256672 A1 WO2020256672 A1 WO 2020256672A1 TR 2020050287 W TR2020050287 W TR 2020050287W WO 2020256672 A1 WO2020256672 A1 WO 2020256672A1
Authority
WO
WIPO (PCT)
Prior art keywords
humerus
angle
condylar
distal
poly
Prior art date
Application number
PCT/TR2020/050287
Other languages
English (en)
Inventor
Ari SMIRYAN
Fatih ATAK
Original Assignee
Efa Veterinerlik Hizmetleri Tic. Ltd. Sti.
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Efa Veterinerlik Hizmetleri Tic. Ltd. Sti. filed Critical Efa Veterinerlik Hizmetleri Tic. Ltd. Sti.
Publication of WO2020256672A1 publication Critical patent/WO2020256672A1/fr

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Classifications

    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
    • A61B17/56—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor
    • A61B17/58—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor for osteosynthesis, e.g. bone plates, screws, setting implements or the like
    • A61B17/68—Internal fixation devices, including fasteners and spinal fixators, even if a part thereof projects from the skin
    • A61B17/80—Cortical plates, i.e. bone plates; Instruments for holding or positioning cortical plates, or for compressing bones attached to cortical plates
    • A61B17/8061—Cortical plates, i.e. bone plates; Instruments for holding or positioning cortical plates, or for compressing bones attached to cortical plates specially adapted for particular bones
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
    • A61B17/56—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor
    • A61B17/58—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor for osteosynthesis, e.g. bone plates, screws, setting implements or the like
    • A61B17/68—Internal fixation devices, including fasteners and spinal fixators, even if a part thereof projects from the skin
    • A61B17/80—Cortical plates, i.e. bone plates; Instruments for holding or positioning cortical plates, or for compressing bones attached to cortical plates
    • A61B17/8052—Cortical plates, i.e. bone plates; Instruments for holding or positioning cortical plates, or for compressing bones attached to cortical plates immobilised relative to screws by interlocking form of the heads and plate holes, e.g. conical or threaded

Definitions

  • the present invention relates to a fully anatomical poly-axial locking distal humerus plate that is formed according to bone anatomy, fully anatomical, capable of being locked at different angles, and designed to be used in distal humerus fractures of quadrupeds which occur as one of many consequences of traumatic events including road accidents, falling from height, firearm injuries, etc.
  • the present invention particularly relates to a fully anatomical multi-directional locking plate system to be used in the field of medicine and designed in compliance with the bone structure in order to eliminate painful bone deformities as well as joint deformities in distal humerus region, stemming from traumatic arthritis, fractures and similar reasons in quadrupeds and particularly in feline and canine animal groups.
  • One of these fracture cases is distal humerus fractures.
  • Distal humerus fractures are divided into subgroups as distal diaphyseal, supracondylar, lateral and/or medial condyle humerus fractures.
  • intercondylar humerus fractures may also be named as "T” and "Y" fractures depending on the anatomical configuration.
  • causes of aforementioned traumas may be listed as road accidents, falling from height, impingement, collisions, jams, sprains and firearm injuries.
  • Prostheses utilized in orthopedic practices may be described as implants placed inside or to the surface of the bone through surgery in order to substitute a diseased joint or a joint which has lost its integrity .
  • prostheses are utilized in the state of the art in order to repair the damage originating from critical bone defects, tumoral or traumatic, and degenerative cases occurring in the distal humerus of quadrupeds.
  • a fully anatomical plate that can fully comply with the anatomical structure of the humerus bone, and can increase the movement radius of the animal by proportionately distributing biomechanical and static loads on the bone by means of being locked to the bone at different angles is not available in applications known in the state of the art.
  • Cross pinning method implies trying to fixate the elbow joint in the medial and lateral directions thereof towards the direction of the humerus shaft by means of two or more fine Kirschner pins, however mandatorily designated points coincide with medial and lateral collateral ligaments on both surfaces as points of entry. Furthermore, the requirement for using fine and flexible pins dictates performing a splinting procedure subsequent to fixation, wherein said splinting procedure induces joint contracture .
  • Another method utilized in distal humerus plate applications in the state of the art is straight pinning method.
  • Straight pinning method involves cutting the joint capsule open and linearly inserting a pin to the humerus shaft on the surface of the radio-humeral joint.
  • Straight pinning method causes discharging of the synovial fluid as the joint capsule is cut open in order to gain access to the pin insertion point.
  • the pinning entry point is directly the joint attrition surface, it fails to absorb tension factors herein, and accordingly causes internal fractures to occur in the form of bone blocks. Additionally, it further causes impairment on the joint surface since the pinning entry point is created by puncturing the cartilage tissue.
  • the present invention relates to developing a novel fully anatomical poly-axial locking distal humerus plate which ensures bone union in segmental and non-segmental distal humerus fractures of quadrupeds by means of fixing the bone in order to eliminate problems existing in the state of the art.
  • the main object of the present invention is to minimize the rate of complications that may potentially develop in the treatment of proximal humerus fractures, which include non union, union delay or avascular necrosis by utilizing a fully anatomical distal humerus plate that is fully compatible with the distal humerus of quadrupeds, and to ensure the point load distribution by connecting the inventive fully anatomical distal humerus plate to the patient through poly-axial locking.
  • Another object of the present invention is to balance the load distribution by performing a fixing process with at least three screws at the distal humerus lateral condyle region, thereby aligning the entirety of loads received in the direction of the elbow joint with cortex and performing a linear load transfer thereof through balanced cortex strength by means of the fully anatomical structure of the present invention.
  • This provides a reduction in loads being received on the screw and/or the plate.
  • Virtually conducted biomechanical studies of the present invention have demonstrated that all screws as well as all surfaces of the plate are exposed to equal tension forces .
  • Yet another object of the present invention is to shorten post operative hospitalization period and to prevent joint contracture in animals through the poly-axial locking screw system that provides full load distribution without imposing any effects and inducing any changes in the joint structure as well as in the functionality of other systemic structures by means of the method employed and the inventive fully anatomical poly-axial locking distal humerus plate utilized.
  • muscular atrophies can also be prevented. Being away from the neural lines allows for avoiding potential nerve damages.
  • shortening durations for application and surgeries also makes substantial contributions to shortening the length of treatment periods.
  • the entirety of loads being received at the angulated line of distal humerus will be distributed at the upper fragment in all gait phases of the quadrupeds, and the integrity of the segmental and non- segmental fractures occurring in the distal humerus will be achieved in a much faster and efficient manner.
  • inventive fully anatomical poly-axial locking distal humerus plate and components thereof designed in compliance with the bone structure of quadrupeds, and to be used in the reconstruction of defects that occur in distal humerus bones of quadrupeds for any reason are illustrated in annexed Figures, wherein;
  • FIGURE 1 illustrates the perspective view of the inventive fully anatomical poly-axial locking distal humerus plate.
  • FIGURE 2 illustrates the general view of the inventive fully anatomical poly-axial locking distal humerus plate.
  • FIGURE 3 illustrates the perspective view of the humerus lateral surface angle.
  • the present invention is an anatomical, poly-axial locking "Fully Anatomical Poly-axial Locking Distal Humerus Plate” which is manufactured from implant materials and is used by being fixed to the dorsum of the distal humerus by means of poly-axial screws for the purpose of fixating fractured bones and repairing deformation in segmental fractures of the distal humerus, in corrective osteotomy thereof, and in supporting dorsally displaced fractures of quadrupeds.
  • Humerus bone of quadrupeds along with feline and canine animal groups has an angulated structure.
  • humerus lateral surface angle (6), humerus condylus shaft translation angle (7), and humerus condylar surface ventral angle (8) which are located on the humerus bone, are required to be able to create a plate that is in full compliance with the anatomy.
  • Respective laboratory works were conducted on the humerus bones of aforementioned animal group, and accordingly minimum and maximum measurements pertaining to aforementioned angles and areas were determined. Concordantly, obtained results were optimized by means of both theoretical and practical applications, and used in the production of the inventive fully anatomical poly-axial locking distal humerus plate.
  • humerus distal condylar angle (1) is in a range between 4.2° - 5.8°
  • humeral process seat angle (2) is in a range between 2.9° - 3.9°
  • lateral distal condylar angle (3) is in a range between 13.6 - 18.4 mm
  • humerus condylar lateral area rotation angle (4) is in a range between 6.8 - 9.2 mm
  • medial lateral condylar rotation angle (5) is in a range between 11.9 - 16.1 mm
  • humerus condylus shaft translation angle (7) is in a range between 4.5° - 6.1°
  • humerus condylar surface ventral angle (8) is in a range between 1.5° - 2.1°.
  • the inventive fully anatomical poly-axial locking distal humerus plates fits perfectly to the bone in a fully compatible manner with anatomical curvatures on the dorsal distal humerus of the patient, thereby ensuring the anatomy of the patient to rapidly return to its original form.
  • humerus distal condylar angle (1) and humerus process seat angle (2) which extend along the inventive fully anatomical poly-axial locking distal humerus plate, are the inflections that are compatible with the anatomy of the distal humerus dorsal bone.
  • Poly-axial locking holes (9) situated on the inventive fully anatomical poly-axial locking distal humerus plate as illustrated in Figure 2, are designed to have specific angular hole structures so as to ensure that the passageway of fixated poly-axial screws is compatible with the anteversion of the humeral neck.
  • Distal end and body holes of the present invention are supported with an internal cone-shaped circular mechanism that can ensure locking at different angles in cases where locking is desired to be performed by using locking cortical screw.
  • the mechanism has an even-symmetric form together with the locking cone-shaped screw head and is locked by means of at least four grooves on each surface thereof.
  • Lateral condylar angle (3) and humerus condylar lateral area rotation angle (4) which are the areas of the inventive fully anatomical poly- axial locking distal humerus plate standing in close proximity of the distal humerus joint are produced in a manner to be compatible with the joint slope.
  • medial lateral condylar rotation angle (5), humerus lateral surface angle (6), and humerus condylar surface ventral angle (8) which are the distances between the outer half-conical form and symmetrical form thereof deployed inside the plate allows the plate to perform a semicircular motion. Fixation is carried out by performing the alignment suitable for segmental fractures in distal humerus by means of the humerus condylus- shaft translation angle (7) .
  • a fully linear surface is obtained upon a motion with a maximum angle value of 60° on the lower surface of the plate in order to keep the inner mechanism which moves on the cortical contact surface, from overpassing to the cortex surface, thereby preventing the plate's inclination of becoming distanced from the cortical area.
  • locking is performed by means of angulated screws which allows for distributing biomechanical loads on the axial basis instead of performing single-plan screwing in bone fixation procedure.

Landscapes

  • Health & Medical Sciences (AREA)
  • Orthopedic Medicine & Surgery (AREA)
  • Surgery (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
  • Engineering & Computer Science (AREA)
  • Biomedical Technology (AREA)
  • Neurology (AREA)
  • Medical Informatics (AREA)
  • Molecular Biology (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Surgical Instruments (AREA)
  • Prostheses (AREA)

Abstract

La présente invention concerne une plaque d'humérus distale à verrouillage poly-axial entièrement anatomique qui est formée selon l'anatomie osseuse, entièrement anatomique, pouvant être verrouillée à différents angles, et conçue pour être utilisée dans des fractures distales de l'humérus de quadrupède qui se produisent en tant que l'une de nombreuses conséquences d'événements traumatiques comprenant des accidents de la route, des chutes en hauteur, des lésions à l'arme à feu, etc. La présente invention concerne en particulier un système de plaque de verrouillage multidirectionnel entièrement anatomique destiné à être utilisé dans le domaine de la médecine et conçu en conformité avec la structure osseuse afin d'éliminer les difformités osseuses douloureuses ainsi que les déformations articulaires dans la région distale de l'humérus, provenant d'arthrite traumatique, de fractures et de raisons similaires chez les quadrupèdes et en particulier dans les groupes d'animaux félin et canin.
PCT/TR2020/050287 2019-06-19 2020-04-08 Plaque d'humérus distale à verrouillage poly-axial entièrement anatomique conçue pour des quadrupèdes WO2020256672A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
TR2019/09064 2019-06-19
TR2019/09064A TR201909064A1 (tr) 2019-06-19 2019-06-19 Dört ayakli hayvanlar i̇çi̇n tasarlanan tam anatomi̇k polyaxial ki̇li̇tlemeli̇ distal humerus plaği

Publications (1)

Publication Number Publication Date
WO2020256672A1 true WO2020256672A1 (fr) 2020-12-24

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Application Number Title Priority Date Filing Date
PCT/TR2020/050287 WO2020256672A1 (fr) 2019-06-19 2020-04-08 Plaque d'humérus distale à verrouillage poly-axial entièrement anatomique conçue pour des quadrupèdes

Country Status (2)

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TR (1) TR201909064A1 (fr)
WO (1) WO2020256672A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114469302A (zh) * 2022-02-11 2022-05-13 张永飞 腱骨联合部位固定器

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20040116930A1 (en) * 2002-06-10 2004-06-17 O'driscoll Shawn W. Bone plates
WO2004107957A2 (fr) * 2003-05-30 2004-12-16 Hfsc Company Plaque vissee
US20060264949A1 (en) * 2003-11-18 2006-11-23 Georges Kohut Osteosynthesis plate set
US20100030277A1 (en) * 2008-07-31 2010-02-04 Haidukewych George J Periarticular bone plate with biplanar offset head member
EP3398526A1 (fr) * 2017-05-05 2018-11-07 Globus Medical, Inc. Plaques de fracture, systèmes et procédés
EP3533402A1 (fr) * 2018-03-02 2019-09-04 Globus Medical, Inc. Système de placage tibial distal

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20040116930A1 (en) * 2002-06-10 2004-06-17 O'driscoll Shawn W. Bone plates
WO2004107957A2 (fr) * 2003-05-30 2004-12-16 Hfsc Company Plaque vissee
US20060264949A1 (en) * 2003-11-18 2006-11-23 Georges Kohut Osteosynthesis plate set
US20100030277A1 (en) * 2008-07-31 2010-02-04 Haidukewych George J Periarticular bone plate with biplanar offset head member
EP3398526A1 (fr) * 2017-05-05 2018-11-07 Globus Medical, Inc. Plaques de fracture, systèmes et procédés
EP3533402A1 (fr) * 2018-03-02 2019-09-04 Globus Medical, Inc. Système de placage tibial distal

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114469302A (zh) * 2022-02-11 2022-05-13 张永飞 腱骨联合部位固定器
CN114469302B (zh) * 2022-02-11 2024-04-02 张永飞 腱骨联合部位固定器

Also Published As

Publication number Publication date
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