WO2007054591A1 - Dispositif en forme de delta destine au traitement des fractures trocanteriques et subtrocanteriques du femur - Google Patents

Dispositif en forme de delta destine au traitement des fractures trocanteriques et subtrocanteriques du femur Download PDF

Info

Publication number
WO2007054591A1
WO2007054591A1 PCT/ES2006/000590 ES2006000590W WO2007054591A1 WO 2007054591 A1 WO2007054591 A1 WO 2007054591A1 ES 2006000590 W ES2006000590 W ES 2006000590W WO 2007054591 A1 WO2007054591 A1 WO 2007054591A1
Authority
WO
WIPO (PCT)
Prior art keywords
strut
anchoring element
delta
nail
delta device
Prior art date
Application number
PCT/ES2006/000590
Other languages
English (en)
Spanish (es)
Inventor
Carlos Enrique Morales Berenguer
Original Assignee
Morales Berenguer Carlos Enriq
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 Morales Berenguer Carlos Enriq filed Critical Morales Berenguer Carlos Enriq
Publication of WO2007054591A1 publication Critical patent/WO2007054591A1/fr

Links

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
    • A61B17/74—Devices for the head or neck or trochanter of the femur
    • A61B17/742—Devices for the head or neck or trochanter of the femur having one or more longitudinal elements oriented along or parallel to the axis of the neck
    • A61B17/744—Devices for the head or neck or trochanter of the femur having one or more longitudinal elements oriented along or parallel to the axis of the neck the longitudinal elements coupled to an intramedullary nail
    • 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
    • A61B17/72—Intramedullary pins, nails or other devices

Definitions

  • Delta device for the treatment of trochanteric and subtrochanteric fractures of the femur.
  • the present invention refers to a delta device for the surgical treatment of proximal femur fractures (trochanteric and subtrochanteric).
  • Cephalomedular nails are intramedullary devices that are inserted through the piriformis fossa of the femur or the tip of the greater trochanter and carry an anchor that can be one or two screws or a sheet that are fixed, through the neck of the femur, inside of the femoral head.
  • an anchor can be one or two screws or a sheet that are fixed, through the neck of the femur, inside of the femoral head.
  • they have one or two locking screws to prevent both the collapse of the fracture and the rotations of the bone that would lead to prevent its healing.
  • Patent ES 2 214 071 T3 discloses an intramedullary nail of this kind.
  • fixed angle plates are devices with a similar anchor (screw or blade inside the femoral neck), and instead of going inside the femoral canal, they are anchored with screws to the external cortex thereof.
  • Subtrochanteric femur fractures. Sims SH these plates are collected and described.
  • cephalomedular nails with respect to the latter, is that they can be inserted through small incisions and that being inside the canal they are closer to the mechanical axis of the leg, presenting a biomechanical advantage over the plates, further away of said axis and therefore suffering greater tensions. Plaques have the disadvantage of requiring large incisions, with greater soft tissue injury.
  • the proximal region of the femur is an area subject to a lot of biomechanical stress, since it is an angled area that supports very large forces (during walking it becomes 5-7 times the body weight).
  • the most important area for the stability of the proximal femur is the post-lantern cortex, in the vicinity of the lesser trochanter, because it is the area closest to the mechanical axis of the leg.
  • This area supports the greater loads of the whole body, and when it is fractured, if the anatomy is not restored so that it can support loads, a lot of tension is produced in it, tension that tends to displace the fracture in varus, that is, decreasing the angle between the neck of the femur and the diaphysis, with eventual ruptures of the implants or pseudoarthrosis of the fracture.
  • the support of the fractured leg is sometimes forbidden for weeks after surgery, in order to avoid these complications.
  • the object of the invention is to create a cephalomedular nail supported by a strut that configures the delta device and guarantees the possibility of immediately loading weight on the limb in the inter-trochanteric and subtrochanteric femur fractures, placing the implant through small incisions.
  • the object of this invention is to create a delta device that does not have the disadvantages described above with respect to cephalomedular nails and plates.
  • SUBSTITUTE SHEET (RULE 26) incision and damage to soft tissue that needs to be implanted, since it is placed in the outer pam of the femur.
  • cephalomedular nails Another disadvantage with respect to cephalomedular nails is that it is a system of static osteosynthesis, that is, it does not allow sliding of the sheet inserted in the femoral neck over the implant body, and thereby prevents compression between the fragments of bone that do allow dynamic systems.
  • the invention described and claimed here is intended to increase the rigidity of the assemblies in the same way as the RAB device did, but with greater biomechanical advantage, because it is intramedullary, and, above all, avoiding the large incisions not exempt from complications required by surgery. with plates allowing the patient to carry weight on the leg in the immediate postoperative period, avoiding complications arising from prolonged incarnation in elderly patients.
  • a static (more rigid and without interfragmentary compression) or dynamic assembly (allowing controlled compression between bone fragments) can be obtained.
  • the nail will have a hole in its interior similar to the one it has for the proximal anchoring element, which will house and orient the strut towards a point where it will converge with the anchoring element, thus closing a delta mount, much larger stability, which will replace the defect of the cortical critique posterointerna.
  • Said assembly will foreseeably have an angle of between 40 and 80 ° between the proximal stabilizing element and the nail, and 20-40 ° between the strut and the nail.
  • the anchoring element will have a bed to house the strut, towards which it will converge, so that the strut will be locked at this point. Depending on the configuration of this bed it will be possible to slide the anchoring element over the strut (dynamic system) or not (static system).
  • the anchor element will be constructed as a dynamic element.
  • This slide will allow the bone fragment that includes the femoral neck to slide a few millimeters (depending on the size of the carved bed), and with that it will impact the fragment of the main bone, thereby favoring interfragmentary compression, which is key to a favor the consolidation of the fracture.
  • more loads will be transmitted to the bone system, thus unloading the device.
  • the bed of the anchoring element for the strut will be of the right size to house the strut and with this this slip will not be allowed, thereby obtaining a static system.
  • Figure 1 represents a cross-section of the delta device disassembled according to the invention together with the anchoring element, the strut and the locking bolts.
  • Figure 2 represents the delta device with its assembled parts.
  • Figure 3 represents a front view of the anchoring element and on its lower face shows the bed that will house the strut.
  • Figure 4 represents a bottom view of the anchoring element where the bed that will house the strut is shown.
  • Figure 5 represents the strut with the anchor thread for the intramedullary nail.
  • Figure 6 represents a 90 degree rotated view of the intramedullary nail depicted in Figure 1 where the four holes and the stopper are appreciated. closing.
  • Figure ' 7 is a perspective representation of the delta device assembled and implanted in the femur. , •
  • Figure 8 is a representation of the delta device where the different distance from the point of application of the force to the nail is shown in the case that the strut was not present as in conventional intramedullary nails (Ll) 5 and said distance with the introduction of the strut (L2). This difference in distances affects the lever arm exerted on the proximal anchoring element in the same proportion, so that the resistance of this assembly is proportionally greater.
  • Figures 9, 10 represent the different design possibilities of the bed of the anchoring element that houses the strut. In figure 9 the strut is locked thereby configuring a static system. In figure 10 there is a certain margin of sliding of the anchoring element on the strut, a dynamic system being configured.
  • the delta device (1) object of the present invention comprises:
  • SUBSTITUTE SHEET (RULE 26) - An intramedullary nail (2) suitable for insertion into the medullary canal of the femur.
  • An anchoring element (7) of the intramedullary nail (2) in the head of the femur is an anchoring element (7) of the intramedullary nail (2) in the head of the femur.
  • Figure 2 shows how the elements listed in the preceding paragraph close a delta device (1), object of the present invention.
  • the intramedullary nail (2) has a conical distal end (3), suitable to facilitate the insertion of said nail into the medullary canal.
  • a drill 13
  • ovoid section which will house the dynamic locking bolt (15).
  • another hole (12) of circular section intended to house the static locking bolt (14).
  • a first hole, oblong section (6) intended to house the anchoring element (7), and below it a second hole (9) with a carved thread, in which will insert and screw the strut (10).
  • the proximal end of the nail (4) serves to anchor in it the instruments for inserting the device into the patient, and at the end of the intervention said hole will be obliterated by means of a closure plug (5).
  • the anchoring element (7) is a structure that has a bed (8) on its lower face to receive the end of the strut (10).
  • the strut (10) will serve to close the delta assembly, transfer the load of the anchoring element (7) to the intramedullary nail (2), reducing the lever arm that supports the anchoring element, as shown in Figure 8
  • the strut is fixed to the nail by means of a thread existing at its end (11), being screwed to the wrought thread existing in the hole (9) prepared for the strut.

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)

Abstract

L'invention porte sur un dispositif en forme de delta destiné au traitement des fractures trocantériques et subtrocantériques du fémur. L'objet selon l'invention comporte une broche céphalomédullaire soutenue par une contrefiche formant le dispositif en delta destiné au traitement des fractures trocantériques et subtrocantériques du fémur. La broche céphalomédullaire comprend une contrefiche qui soutient l'élément de blocage proximal qui est introduit dans le col du fémur, ce qui permet de retirer en partie la charge dudit élément de blocage et de la transférer sur ladite broche. Ladite broche est munie d'un alésage qui sert à bloquer et à orienter la contrefiche en direction d'une niche située dans l'élément d'ancrage proximal. Les fractures du fémur proximal nécessitent des implants résistants et stables et le dispositif selon l'invention est conçu pour offrir une grande stabilité et résistance. Différentes configurations de l'élément d'ancrage sont prévues, ce qui permet au dispositif d'être dynamique et statique.
PCT/ES2006/000590 2005-11-08 2006-10-24 Dispositif en forme de delta destine au traitement des fractures trocanteriques et subtrocanteriques du femur WO2007054591A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
ESP200502832 2005-11-08
ES200502832A ES2251888B1 (es) 2005-11-08 2005-11-08 Dispositivo en delta para el tratamiento de las fracturas trocantericas y subtocantericas de femur.

Publications (1)

Publication Number Publication Date
WO2007054591A1 true WO2007054591A1 (fr) 2007-05-18

Family

ID=36370892

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/ES2006/000590 WO2007054591A1 (fr) 2005-11-08 2006-10-24 Dispositif en forme de delta destine au traitement des fractures trocanteriques et subtrocanteriques du femur

Country Status (2)

Country Link
ES (1) ES2251888B1 (fr)
WO (1) WO2007054591A1 (fr)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102009010328A1 (de) * 2009-02-25 2010-08-26 Dieter Marquardt Medizintechnik Gmbh Humerusnagel zur Versorgung von Frakturen des Humerus
WO2013024356A3 (fr) * 2011-08-15 2013-04-25 Zimmer Gmbh Dispositif de fixation d'une fracture du fémur
US11141203B2 (en) 2015-07-06 2021-10-12 Swemac Innovation Ab Device for fixation of bone fragments
US11701132B2 (en) 2021-03-25 2023-07-18 DePuy Synthes Products, Inc. Lateral cortex penetrator

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA2781407A1 (fr) 2008-01-14 2009-07-23 Michael P. Brenzel Appareil et procedes de reparation des fractures
US20110178520A1 (en) 2010-01-15 2011-07-21 Kyle Taylor Rotary-rigid orthopaedic rod
CA2823873A1 (fr) 2010-01-20 2011-07-28 Conventus Orthopaedics, Inc. Appareil et procedes pour acces a un os et preparation d'une cavite
WO2011112619A1 (fr) * 2010-03-08 2011-09-15 Krinke Todd A Appareil et procédés de réparation osseuse
AU2011224529C1 (en) 2010-03-08 2017-01-19 Conventus Orthopaedics, Inc. Apparatus and methods for securing a bone implant
EP3079607A4 (fr) 2013-12-12 2017-07-26 Conventus Orthopaedics, Inc. Outils et méthodes de déplacement de tissu
US10918426B2 (en) 2017-07-04 2021-02-16 Conventus Orthopaedics, Inc. Apparatus and methods for treatment of a bone

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1069670A (en) * 1965-01-01 1967-05-24 Raphael Salama An improved surgical implant for trochanteric fractures of the femur
DE8712991U1 (fr) * 1987-09-26 1987-11-05 Kernforschungszentrum Karlsruhe Gmbh, 7500 Karlsruhe, De
ES1022064U (es) * 1992-07-27 1993-03-01 Industrias Quirurgicas De Levante, S.A. "dispositivo perfeccionado para la reduccion y tratamiento de fracturas trocantereas del femur y otras aplicaciones.
FR2718013A1 (fr) * 1994-04-01 1995-10-06 Medinov Sa Dispositif d'enclouage centro-médullaire notamment pour fractures sous cervicales du fémur.
FR2781360A1 (fr) * 1998-07-23 2000-01-28 Raymond Massaad Dispositif de fixation en chirurgie orthopedique et traumatologique au moyen d'une lame-clou-verrouille
ES1051520U (es) * 2002-03-15 2002-08-16 Levante Ind Quirurgicas Implante para la reduccion y el tratamiento de fracturas trocantereas del femur.
ES2195077T3 (es) * 1997-01-21 2003-12-01 Orthofix Srl Clavo para cavidad intramedular para el tratamiento de fracturas de la cadera.

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1069670A (en) * 1965-01-01 1967-05-24 Raphael Salama An improved surgical implant for trochanteric fractures of the femur
DE8712991U1 (fr) * 1987-09-26 1987-11-05 Kernforschungszentrum Karlsruhe Gmbh, 7500 Karlsruhe, De
ES1022064U (es) * 1992-07-27 1993-03-01 Industrias Quirurgicas De Levante, S.A. "dispositivo perfeccionado para la reduccion y tratamiento de fracturas trocantereas del femur y otras aplicaciones.
FR2718013A1 (fr) * 1994-04-01 1995-10-06 Medinov Sa Dispositif d'enclouage centro-médullaire notamment pour fractures sous cervicales du fémur.
ES2195077T3 (es) * 1997-01-21 2003-12-01 Orthofix Srl Clavo para cavidad intramedular para el tratamiento de fracturas de la cadera.
FR2781360A1 (fr) * 1998-07-23 2000-01-28 Raymond Massaad Dispositif de fixation en chirurgie orthopedique et traumatologique au moyen d'une lame-clou-verrouille
ES1051520U (es) * 2002-03-15 2002-08-16 Levante Ind Quirurgicas Implante para la reduccion y el tratamiento de fracturas trocantereas del femur.

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102009010328A1 (de) * 2009-02-25 2010-08-26 Dieter Marquardt Medizintechnik Gmbh Humerusnagel zur Versorgung von Frakturen des Humerus
WO2013024356A3 (fr) * 2011-08-15 2013-04-25 Zimmer Gmbh Dispositif de fixation d'une fracture du fémur
US8652136B2 (en) 2011-08-15 2014-02-18 Zimmer, Gmbh Femoral fracture fixation device
US9232970B2 (en) 2011-08-15 2016-01-12 Zimmer Gmbh Femoral fracture fixation device
US9707020B2 (en) 2011-08-15 2017-07-18 Zimmer Gmbh Femoral fracture fixation device
US11141203B2 (en) 2015-07-06 2021-10-12 Swemac Innovation Ab Device for fixation of bone fragments
US11701132B2 (en) 2021-03-25 2023-07-18 DePuy Synthes Products, Inc. Lateral cortex penetrator

Also Published As

Publication number Publication date
ES2251888B1 (es) 2007-04-01
ES2251888A1 (es) 2006-05-01

Similar Documents

Publication Publication Date Title
ES2251888B1 (es) Dispositivo en delta para el tratamiento de las fracturas trocantericas y subtocantericas de femur.
ES2393679T3 (es) Dispositivo para fracturas de cadera con cilindro y tapa de extremo para control de carga
ES2619649T3 (es) Dispositivo para fractura de cadera con mecanismo de bloqueo estático que permite la compresión
ES2624580T3 (es) Sistema de implante para fijación ósea
ES2963840T3 (es) Aparato de guía de alineación
ES2457192T3 (es) Clavo corto para el tratamiento de fracturas de epífisis
ES2341962T3 (es) Conjunto de tornillo oseo y placa ortopedica.
ES2379160T3 (es) Dispositivo de osteosíntesis intramedular
ES2281192T3 (es) Tratamiento de fracturas.
ES2322575T3 (es) Placa de osteosintesis.
ES2594478T3 (es) Implante quirúrgico
ES2209450T3 (es) Clavo de fijacion provisional de placa de hueso.
ES2210836T3 (es) Clavo intramedular para el tratamiento operatorio de fracturas de antebrazo.
ES2573282T3 (es) Pasador alargado para un sistema de fijación modular externo para aplicaciones de fijación temporal y/o permanente y sistema de fijación modular externo
ES2820558T3 (es) Sistema de sujeción ósea
ES2960059T3 (es) Implantes de fijación de fractura de plataforma
ES2380678T3 (es) Pasador de fijación quirúrgica
RU2585732C2 (ru) Имплантируемое устройство для профилактической или лечебной терапии переломов бедренной кости, соответствующее вспомогательное средство
ES2675368T3 (es) Grupo de anclaje para un fijador externo
ES2955370T3 (es) Sistema de fijación de ligamentos, implantes y dispositivos con tapa de compresión
JPH11216147A (ja) 固定具
KR20050123111A (ko) 하이브리드 연결 근위 대퇴부 골절 고정장치
CN107223040B (zh) 用在髋骨和股骨骨折手术中的髓内固定装置和系统
CN111281510A (zh) 一种组配式解剖型股骨近端骨折髓内固定装置
ES2918002T3 (es) Tornillo óseo

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application
NENP Non-entry into the national phase

Ref country code: DE

32PN Ep: public notification in the ep bulletin as address of the adressee cannot be established

Free format text: NOTIFICATION OF LOSS OF RIGHTS PURSUANT TO RULE 112(1) EPC (EPO FORM 1205A SENT ON 18.09.08)

122 Ep: pct application non-entry in european phase

Ref document number: 06830892

Country of ref document: EP

Kind code of ref document: A1