WO2014085882A1 - Device with protection and guide for cutting bone tissue - Google Patents

Device with protection and guide for cutting bone tissue Download PDF

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Publication number
WO2014085882A1
WO2014085882A1 PCT/BR2013/000320 BR2013000320W WO2014085882A1 WO 2014085882 A1 WO2014085882 A1 WO 2014085882A1 BR 2013000320 W BR2013000320 W BR 2013000320W WO 2014085882 A1 WO2014085882 A1 WO 2014085882A1
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WO
WIPO (PCT)
Prior art keywords
guide
cutting
bone tissue
plate
saw
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PCT/BR2013/000320
Other languages
French (fr)
Portuguese (pt)
Inventor
José Alberto ANGELI
Original Assignee
Angeli José Alberto
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 Angeli José Alberto filed Critical Angeli José Alberto
Publication of WO2014085882A1 publication Critical patent/WO2014085882A1/en

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Classifications

    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61BDIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00Surgical instruments, devices or methods, e.g. tourniquets
    • A61B17/14Surgical saws ; Accessories therefor
    • A61B17/15Guides therefor
    • A61B17/151Guides therefor for corrective osteotomy
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61BDIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00Surgical instruments, devices or methods, e.g. tourniquets
    • A61B17/02Surgical instruments, devices or methods, e.g. tourniquets for holding wounds open; Tractors

Definitions

  • the present invention relates to an orthopedic retractor with guide for performing accurate and safe osteotomies consisting of a handle to hold the instrument, a spatula to remove and protect muscle tissue, vessels and nerves, and a guide to give direction and precision when cutting, guiding the position of implant placement for subsequent fixation of bone segments.
  • Osteotomy is an orthopedic surgical procedure that allows the correction of bone defects through a cut of this bone and subsequent fixation of the segments in a better position.
  • this technique is widely used to correct knee deformities with arthrosis and angular deviations in the lower limb.
  • the biomedical industry launches a large number of new devices such as retractors, guides, rods, pins, among others, which facilitate the surgical procedure.
  • the most common orthopedic retractors on the market have the sole function of removing tissues to facilitate surgery and increase bone exposure.
  • These instruments come in various formats and can be manual or auto-static.
  • Osteotomies are performed, with constant radiological control, through incisions that allow the surgeon to move away the structures that cannot be injured and expose the bone portion to be cut, to allow osteosynthesis (bone fixation) in the new determined position.
  • the present invention aims to reduce the inherent risks of the bone tissue cutting procedure. Presenting for this purpose a spatula that separates the tissues and vessels of the bone and protects them from the saw used in the cut. This invention allows the use of X-ray and gives the surgeon greater safety during cutting.
  • the instrument also has a guide for the electric saw that gives precision to the cut, with great practicality in its use, because it allows the orientation of the position in which the osteosynthesis plates should be placed. Its greatest advantage is to integrate 4 steps of surgery with only one instrument (bone exposure, removal of structures, osteotomy and orientation of the plates).
  • the other features of the present invention are: -
  • the saw guide is movable for easy adaptation to bones of different sizes.
  • the spatula has slots to identify the progression and alignment of the X-ray saw.
  • the spatula is not sharp to prevent it from cutting tissues and vessels, but has an edge that divuls the tissues by detaching them from the bone, and a geometry that adapts to the bone.
  • the handle is ergonomic and allows the guide to be directed to the best position.
  • the plate coupled to the guide simulates the position in which the definitive osteosynthesis material will be fixed.
  • the plate is movable to facilitate the cutting procedure at different angles.
  • Figure 1 shows a perspective view of the instrument complete with the handle and the spatula (A), the movable guide (B) and the plate itself (C).
  • Figure 2 is a perspective view of the rod (4) and the spatula (1) which will preferably be a single piece. In the spatula there will be cracks (2) and a graduation for the movable guide (3).
  • Figure 3 shows a cross-sectional view drawing attention to the opening of the movable guide (5), the spatula profile (6) and the hook (7).
  • Figure 4 shows some sections of the guide passage profiles (8 and 9) and the rod (10).
  • Figure 5 shows the two sections of the lower guide (11 and 12), saw opening (13) and plate housing (14).
  • Figure 6 is a perspective view of the movable guide (B) with the opening edges (18) rounded to facilitate entry of the saw into the guide.
  • Figure 7 is the plate (C) with the saw opening (16), the upper part for its attachment (15) and the holes for the pins (17).
  • Figure 8 shows the limited movement that the plate (C) must have in relation to the movable guide (B).
  • Figures 9 and 10 show a possible method of fixing the movable guide (C) with the device (D) and the toothed plate (E).
  • Figure 11 shows a possible fastening device (D) for the movable guide
  • the instrument will consist of a part (A) formed by the rod (4) and the spatula (1) ( Figure 2) with an opening (5) for the placement of the movable guide (B) .
  • the movable guide will slide through the opening and its advance or retraction will be measured by the graduation (3).
  • At the front of the guide there will be a notch (14) of the plate (C).
  • the purpose of this plate is to provide orientation for subsequent fixation of the orthopedic implant and will not be fully fixed to allow bone cutting at different angles (Figure 8).
  • the material used in the parts of this instrument shall be resistant to stresses, permit repeated sterilization procedures and shall not be oxidizable.
  • the spatula (1) will not be sharp to damage the noble tissues and will have a curved profile (6) ( Figure 3) to increase the area protected by the saw. Its geometry allows adaptation to the bone anatomy to provide greater stability during cutting. In its extension there will be slots (2) in order to differentiate the blade from the instrumental saw during radiological control and to control the advance and direction of this same saw, and the shape of these slots (2) may vary as long as it does not lose its shape. goal.
  • the movable guide (B) that will be placed and slide through the opening (5).
  • the distance between the tip of the spatula and the plate (C) can be measured by the graduation (3). This variation of measurement is important for the present object as it allows the surgeon to adapt the instrument to different bone sizes.
  • the shape of the aperture (5) will preferably be of trapezoidal shape (8 and 9) to facilitate attachment of the guide.
  • the guide (B) can be fixed by spring, remembering that by vibration of the saw the threaded connections can become an undesirable alternative.
  • the system will be fixed by a toothed plate (E) and a spring device (D) shown in Figure 11.
  • the stem geometry will be ergonomic for the grip of the handle to the surgical glove, comfort and ease of use for the surgeon. Its format is presented in Figure 4 by section (10).
  • FIG 2 another important feature of this invention is the hook (7), where a weight will be placed to maintain the openness of the fabrics, providing stability and eliminating the need for another aid.
  • the movable guide (B) will have an opening (13) for the saw and its lower part will have the shape (11 and 12) ( Figure 5) equivalent to the opening (5) for its insertion in the spatula.
  • the edges (18) ( Figure 6) of the saw opening will be rounded to facilitate insertion of the saw blade into the guide.
  • the plate shown in Figure 7 will have two projections (15), one at the top and one at the bottom to be coupled to the guide (B).
  • the measurements (geometry) of these protrusions and housings (14) should allow the movement of the plate ( Figure 8) which, although limited, will facilitate bone cutting at different angles.
  • the board has the opening (16) for the passage of the saw and holes (17) for the placement of the pins.
  • the plate should preferably be flexible to facilitate its attachment to the housings (14). Through these pins the plate will be temporarily fixed to the bone.

Abstract

The present subject matter relates to an orthopaedic retractor that has a guide for carrying out osteotomies in a precise and safe manner, comprised of a handle for holding the apparatus, a spatula for retracting and protecting the specialized tissues, and a guide for providing direction and precision when cutting, guiding the positioning of implants for subsequent attachment of the bone segments. One apparatus integrates four steps of the surgery (bone exposure, structure retraction, osteotomy and plate positioning).

Description

"DISPOSITIVO COM PROTEÇÃO E GUIA PARA O CORTE DO TECIDO ÓSSEO" "PROTECTIVE DEVICE AND GUIDE FOR BONE TISSUE CUTTING"
A presente invenção refere-se a um afastador ortopédico, com guia para realizar osteotomias de forma precisa e segura composto por um cabo para segurar o instrumental, uma espátula para afastar e proteger o tecido muscular, vasos e nervos, além de um guia para dar direção e precisão ao corte, orientando a posição da colocação dos implantes para posterior fixação dos segmentos ósseos. The present invention relates to an orthopedic retractor with guide for performing accurate and safe osteotomies consisting of a handle to hold the instrument, a spatula to remove and protect muscle tissue, vessels and nerves, and a guide to give direction and precision when cutting, guiding the position of implant placement for subsequent fixation of bone segments.
A osteotomia é um procedimento cirúrgico ortopédico que permite a correção de defeitos ósseos através de um corte deste osso e posterior fixação dos segmentos em uma melhor posição. Atualmente esta técnica é muito utilizada para corrigir deformidades no joelho com artrose e desvios angulares no membro inferior.  Osteotomy is an orthopedic surgical procedure that allows the correction of bone defects through a cut of this bone and subsequent fixation of the segments in a better position. Currently this technique is widely used to correct knee deformities with arthrosis and angular deviations in the lower limb.
A indústria biomédica lança no mercado um grande número de novos dispositivos como afastadores, guias, hastes, pinos, entre outros, que facilitam o procedimento cirúrgico. Os afastadores ortopédicos mais comuns no mercado tem como única função afastar os tecidos para facilitar a cirurgia e aumentar a exposição do osso. Estes instrumentos possuem vários formatos e podem ser manuais ou auto- estáticos.  The biomedical industry launches a large number of new devices such as retractors, guides, rods, pins, among others, which facilitate the surgical procedure. The most common orthopedic retractors on the market have the sole function of removing tissues to facilitate surgery and increase bone exposure. These instruments come in various formats and can be manual or auto-static.
No entanto, não há instrumentais que permitam o seccionamento do osso com precisão e ao mesmo tempo garantam a exposição da área a ser operada, afastando, protegendo e impedindo a lesão de tecidos nobres.  However, there are no instruments that allow the bone to be sectioned precisely and at the same time guarantee the exposure of the area to be operated, removing, protecting and preventing the injury of noble tissues.
As osteotomias são realizadas, com o controle radiológico constante, através de incisões que possibilitam ao cirurgião afastar as estruturas que não podem ser lesadas e expor a porção óssea a ser cortada, para permitir a osteossíntese (fixação do osso) na nova posição determinada.  Osteotomies are performed, with constant radiological control, through incisions that allow the surgeon to move away the structures that cannot be injured and expose the bone portion to be cut, to allow osteosynthesis (bone fixation) in the new determined position.
As técnicas atuais utilizam de afastadores metálicos que dificultam a cirurgia por não serem transparentes aos raios-x impedindo o controle radiográfico concomitante. Também existe a necessidade de guias de difícil manuseio, instáveis, prolongando o tempo da cirurgia a ponto de alguns cirurgiões preferirem não utilizá- los, correndo o risco de um corte ósseo menos preciso e de lesões de tecidos nobres (vasos sanguíneos, nervos e músculos) e complicações graves.  Current techniques use metal retractors that make surgery difficult because they are not transparent to x-rays preventing concomitant radiographic control. There is also a need for difficult-to-handle, unstable guides extending the time of surgery to the point that some surgeons prefer not to use them, at the risk of less accurate bone cutting and damage to noble tissues (blood vessels, nerves and muscles). ) and severe complications.
A presente invenção tem como objetivo diminuir os riscos inerêntes ao procedimento do corte do tecido ósseo. Apresentando para tal objetivo uma espátula que separa os tecidos e vasos do osso e protege os mesmos da serra utilizada no corte. Este invento permite o uso do Raio-X e dá ao cirurgião maior segurança durante o corte.  The present invention aims to reduce the inherent risks of the bone tissue cutting procedure. Presenting for this purpose a spatula that separates the tissues and vessels of the bone and protects them from the saw used in the cut. This invention allows the use of X-ray and gives the surgeon greater safety during cutting.
O instrumento ainda possui acoplado um guia para a serra-elétrica que dá precisão ao corte, com grande praticidade em seu uso, pois ele permite a orientação da posição em que as placas de osteossíntese deverão ser colocadas. Sua maior vantagem é integrar 4 passos da cirurgia com 1 só instrumental (exposição do osso, afastamento das estruturas, osteotomia e orientação das placas).  The instrument also has a guide for the electric saw that gives precision to the cut, with great practicality in its use, because it allows the orientation of the position in which the osteosynthesis plates should be placed. Its greatest advantage is to integrate 4 steps of surgery with only one instrument (bone exposure, removal of structures, osteotomy and orientation of the plates).
As outras características da presente invenção são: - o guia da serra é móvel para facilitar a adaptação em ossos de tamanhos diferentes.The other features of the present invention are: - The saw guide is movable for easy adaptation to bones of different sizes.
- a espátula possui fendas para identificar a progressão e o alinhamento da serra de corte no raio-x. - The spatula has slots to identify the progression and alignment of the X-ray saw.
- a espátula não é cortante para evitar que corte tecidos e vasos, mas possui um bordo que divulsiona os tecidos descolando-os do osso, além de uma geometria que se adapta ao osso.  - The spatula is not sharp to prevent it from cutting tissues and vessels, but has an edge that divuls the tissues by detaching them from the bone, and a geometry that adapts to the bone.
- o cabo é ergonómico e permite o direcionamento do guia para melhor posição.  - The handle is ergonomic and allows the guide to be directed to the best position.
- a placa acoplada ao guia simula a posição em que o material definitivo de osteossintese será fixado.  - the plate coupled to the guide simulates the position in which the definitive osteosynthesis material will be fixed.
- a placa é móvel para facilitar o procedimento do corte em diferentes ângulos. - The plate is movable to facilitate the cutting procedure at different angles.
Para melhor explanação do invento, segue a descrição das figuras:  For a better explanation of the invention, follow the description of the figures:
A Figura 1 apresenta uma vista em perspectiva do instrumental completo com o cabo e a espátula (A), o guia móvel (B) e a própria placa (C).  Figure 1 shows a perspective view of the instrument complete with the handle and the spatula (A), the movable guide (B) and the plate itself (C).
A Figura 2 é uma vista em perspectiva da haste (4) e da espátula (1) que será preferêncialmente uma peça única. Na espátula haverá fendas (2) e uma gradução para o guia móvel (3).  Figure 2 is a perspective view of the rod (4) and the spatula (1) which will preferably be a single piece. In the spatula there will be cracks (2) and a graduation for the movable guide (3).
A Figura 3 apresenta uma vista em corte chamando a atenção para a abertura do guia móvel (5), o perfil da espátula (6) e o gancho (7).  Figure 3 shows a cross-sectional view drawing attention to the opening of the movable guide (5), the spatula profile (6) and the hook (7).
A Figura 4 apresenta algumas secções dos perfis da passagem do guia (8 e 9) e da haste (10).  Figure 4 shows some sections of the guide passage profiles (8 and 9) and the rod (10).
A Figura 5 indica as duas secções da parte inferior do guia (11 e 12), abertura para a serra (13) e o alojamento da placa (14).  Figure 5 shows the two sections of the lower guide (11 and 12), saw opening (13) and plate housing (14).
A Figura 6 é uma vista em perspectiva do guia móvel (B) com as arestas (18) da abertura arredondadas para facilitar a entrada da serra no guia.  Figure 6 is a perspective view of the movable guide (B) with the opening edges (18) rounded to facilitate entry of the saw into the guide.
A Figura 7 é a placa (C) com a abertura para a serra (16), a parte superior para a sua fixação (15) e os furos para os pinos (17).  Figure 7 is the plate (C) with the saw opening (16), the upper part for its attachment (15) and the holes for the pins (17).
A Figura 8 apresenta o movimento limitado que a placa (C) deve ter em relação ao guia móvel (B).  Figure 8 shows the limited movement that the plate (C) must have in relation to the movable guide (B).
A Figura 9 e 10 apresentam um possível método de fixação do guia móvel (C) com o dispositivo (D) e a placa dentada (E).  Figures 9 and 10 show a possible method of fixing the movable guide (C) with the device (D) and the toothed plate (E).
A Figura 11 apresenta um possível dispositivo de fixação (D) para o guia móvel Figure 11 shows a possible fastening device (D) for the movable guide
Como mostrado na Figura 1 e Figura 3, o instrumental será composto por uma peça (A) formada pela haste (4) e a espátula (1) (Figura 2) com uma abertura (5) para a colocação do guia móvel (B). O guia móvel deslizará pela abertura e seu avanço ou retrocesso será mensurado pela graduação (3). Na parte frontal do guia haverá encaixe (14) da placa (C). A finalidade desta placa é dar a orientação para posterior fixação do implate ortopédico e não será totalmente fixa para permitir o corte ósseo em diferentes ângulos (Figura 8). As shown in Figure 1 and Figure 3, the instrument will consist of a part (A) formed by the rod (4) and the spatula (1) (Figure 2) with an opening (5) for the placement of the movable guide (B) . The movable guide will slide through the opening and its advance or retraction will be measured by the graduation (3). At the front of the guide there will be a notch (14) of the plate (C). The purpose of this plate is to provide orientation for subsequent fixation of the orthopedic implant and will not be fully fixed to allow bone cutting at different angles (Figure 8).
O material utilizado nas peças deste instrumental deverá ser resistente às cargas solicitantes,permitir repetidos procedimentos de esterilização e não ser oxidável.  The material used in the parts of this instrument shall be resistant to stresses, permit repeated sterilization procedures and shall not be oxidizable.
A espátula (1), não será cortante para não danificar os tecidos nobres e possuirá um perfil curvo (6) (Figura 3) para aumentar a área protegida pela serra. Sua geometria permite a adaptação à anatomia óssea de forma a dar maior estabilidade durante o corte. Em sua extensão haverá fendas (2) com o objetivo de diferenciar lâmina da serra do instrumental durante o controle radiológico e controlar o avanço e a direção desta mesma serra, podendo o formato destas fendas (2) variar desde que a mesma não perca a sua finalidade.  The spatula (1) will not be sharp to damage the noble tissues and will have a curved profile (6) (Figure 3) to increase the area protected by the saw. Its geometry allows adaptation to the bone anatomy to provide greater stability during cutting. In its extension there will be slots (2) in order to differentiate the blade from the instrumental saw during radiological control and to control the advance and direction of this same saw, and the shape of these slots (2) may vary as long as it does not lose its shape. goal.
Entre a espátula (1) e o cabo (4) estará localizado o guia móvel (B) que será colocado e deslizará através da abertura (5). A distância entre a ponta da espátula e a placa (C) poderá ser mensurada pela graduação (3). Esta variação da medida é importante para o presente objeto, pois permite ao cirurgião adaptar o instrumental a diferentes tamanhos de ossos. Como mostrado na Figura 4, o formato da abertura (5) será preferêncialmente no formato trapezoidal (8 e 9) para facilitar a fixação do guia. O guia (B) poderá ser fixado através de molas, lembrando que pela vibração da serra as conexões roscadas podem tornar-se uma alternativa indesejável. Na Figura 9 e 10 é possível visualizar uma forma de fixação conveniente para o presente projeto, o sistema será fixo através de uma placa dentada (E) e um dispositivo com efeito mola (D) apresentado na Figura 11.  Between the spatula (1) and the cable (4) will be located the movable guide (B) that will be placed and slide through the opening (5). The distance between the tip of the spatula and the plate (C) can be measured by the graduation (3). This variation of measurement is important for the present object as it allows the surgeon to adapt the instrument to different bone sizes. As shown in Figure 4, the shape of the aperture (5) will preferably be of trapezoidal shape (8 and 9) to facilitate attachment of the guide. The guide (B) can be fixed by spring, remembering that by vibration of the saw the threaded connections can become an undesirable alternative. In Figure 9 and 10 it is possible to see a fastening form suitable for the present project, the system will be fixed by a toothed plate (E) and a spring device (D) shown in Figure 11.
A geometria da haste será ergonómica visando a aderência do cabo à luva cirúrgica, o conforto e a facilidade de uso para o cirurgião. Seu formato é apresentado na Figura 4, pela secção (10).  The stem geometry will be ergonomic for the grip of the handle to the surgical glove, comfort and ease of use for the surgeon. Its format is presented in Figure 4 by section (10).
Voltando à Figura 2, outra característica importante deste invento é o gancho (7), onde será colocado um peso para manter a abertura dos tecidos, dando estabilidade e dispensando a necessidade de mais um auxilar.  Turning to Figure 2, another important feature of this invention is the hook (7), where a weight will be placed to maintain the openness of the fabrics, providing stability and eliminating the need for another aid.
O guia móvel (B) possuirá uma abertura (13) para a serra e sua parte inferior posuirá o formato (11 e 12) (Figura 5) equivalente à abertura (5) para o encaixe deste na espátula. As arestas (18) (Figura 6) da abertura para a serra serão arredondadas para facilitar a inserção da lâmina da serra no guia.  The movable guide (B) will have an opening (13) for the saw and its lower part will have the shape (11 and 12) (Figure 5) equivalent to the opening (5) for its insertion in the spatula. The edges (18) (Figure 6) of the saw opening will be rounded to facilitate insertion of the saw blade into the guide.
A placa apresentada na Figura 7 possuirá duas saliências (15), uma na parte superior e outra na parte inferior para ser acoplada ao guia (B). As medidas (geometria) destas saliências e dos alojamentos (14) devem permitir o movimento da placa (Figura 8) que, apesar de limitado, facilitará o corte ósseo em diferentes ângulos. Entre outras características a placa possui a abertura (16) para a passagem da serra e furos (17) para a colocação dos pinos. A placa deverá ser preferencialmente flexível para facilitar sua fixação nos alojamentos (14). Através destes pinos a placa ficará temporariamente fixa ao osso.  The plate shown in Figure 7 will have two projections (15), one at the top and one at the bottom to be coupled to the guide (B). The measurements (geometry) of these protrusions and housings (14) should allow the movement of the plate (Figure 8) which, although limited, will facilitate bone cutting at different angles. Among other features, the board has the opening (16) for the passage of the saw and holes (17) for the placement of the pins. The plate should preferably be flexible to facilitate its attachment to the housings (14). Through these pins the plate will be temporarily fixed to the bone.

Claims

REIVINDICAÇÕES
1. Dispositivo com proteção e guia para o corte do tecido ósseo caracterizado por um peça (A), mais preferencialmente única contendo uma haste (4) e uma espátula (1) com uma abertura (5) entre eles para a colocação e fixação do guia móvel (B) junto à placa (C); fabricado em materiais que resistam às cargas solicitantes e ao mesmo tempo permitam repetidos procedimentos de esterilização, não seja oxidável e seja radiotranspa rente.  1. Protective device and guide for cutting bone tissue characterized by a more preferably single piece (A) containing a rod (4) and a spatula (1) with an opening (5) between them for placing and fixing the bone. movable guide (B) next to the plate (C); It is made of materials that withstand the stresses and at the same time allow repeated sterilization procedures that are non-oxidizable and radiolucent.
2. Dispositivo com proteção e guia para o corte do tecido ósseo de acordo com a reivindicação 1, caracterizado pela possibilidade de ser utilizado em diferentes procedimentos cirúrgicos, em diferentes membros e em seres humanos ou em outros seres vivos.  Device with guiding and guiding for cutting bone tissue according to claim 1, characterized in that it can be used in different surgical procedures, in different limbs and in humans or other living beings.
3. Dispositivo com proteção e guia para o corte do tecido ósseo de acordo com a reivindicação 1 e 2, caracterizado por um perfil de espátula (1) preferencialmente curvo (6) e não cortante, com uma pluralidade de fendas (2) na sua superfície superior, preferêncialmente retângulares podendo ter outros formatos desde que mantenha sua finalidade de guiar e diferenciar a serra de corte através do controle radiológico.  Protective device and guide for cutting bone tissue according to claims 1 and 2, characterized in that a preferably curved (6) and non-cutting spatula profile (1) has a plurality of slots (2) in its surface. upper surface, preferably rectangular and may have other shapes as long as it maintains its purpose of guiding and differentiating the saw by radiological control.
4. Dispositivo com proteção e guia para o corte do tecido ósseo de acordo com a reivindicação 1 a 3, caracterizado por uma abertura (5) entre a espátula (1) e a haste (4) no formato mais preferencialmente trapezoidal e menos preferencialmente reto que faxilite a fixação e a movimentação do guia (B).  Protective device and guide for cutting bone tissue according to claims 1 to 3, characterized in that an opening (5) between the spatula (1) and the stem (4) is in the most preferably trapezoidal and less preferably straight shape. that facilitates the fixation and movement of the guide (B).
5. Dispositivo com proteção e guia para o corte do tecido ósseo de acordo com a reivindicação 1 a 4, caracterizado por um guia móvel (B) que será fixado e deslizará através da abertura (5), sendo que seu formato inferior (11 e 12) respeitará o formato desta abertura (5); uma fenda (13) na sua parte superior para a passagem da serra de corte, onde suas arestas, mais preferencialmente em arredondadas, preferencialemente chanfradas e menos preferencialmente em canto vivo, devem facilitar a entrada da serra na abertura (13) do guia (B); alojamentos (14) no guia para a colocação da placa (C) que permitam o movimento limitado desta placa (C) em relação ao guia móvel (B); fixação deste guia móvel (B) na peça (A) de forma que a vibração da serra não prejudique sua junção, sendo preferencialmente por efeito mola e menos preferencialmente por fixações roscadas ou pinos.  Protective device and guide for cutting bone tissue according to any one of claims 1 to 4, characterized in that a movable guide (B) will be fixed and slide through the opening (5), its lower shape (11 and 12) respect the shape of this opening (5); a slot (13) at its upper part for the passage of the cutting saw, where its edges, more preferably rounded, preferably chamfered and less preferably in a sharp corner, should facilitate the entry of the saw into opening (13) of guide (B). ); housings (14) in the guide for placing the plate (C) allowing limited movement of this plate (C) relative to the movable guide (B); fixation of this movable guide (B) to the part (A) so that the vibration of the saw does not affect its joining, preferably by spring effect and less preferably by threaded fixings or pins.
6. Dispositivo com proteção e guia para o corte do tecido ósseo de acordo com a reivindicação 5, caracterizado por uma placa (C) mais preferencialmente flexível a ponto de permitir a colocação da mesma nos alojamentos (14) do guia móvel (B) sem auxílio de outras fixações, com saliências (15) na parte superior e inferior da placa (C) onde o formato permita o movimento limitado da placa (C) em relação ao guia móvel (B); e seu formato mais preferencialmente em cruz, preferencialmente retangular e menos preferencialmente circunferêncial que permita a localização de uma abertura (16) para a passagem da serra e a localização de uma pluralidade de furos (17) para a inserção de pinos guias. Bone tissue cutting device with guide and guiding according to claim 5, characterized in that a plate (C) is more preferably flexible enough to allow it to be placed in the housings (14) of the movable guide (B). aid of other fastenings, with projections (15) on the top and bottom of the plate (C) where the shape allows the limited movement of the plate (C) in relation to the movable guide (B); and its shape most preferably crosswise, preferably rectangular and less preferably circumferential, allowing the location of an opening (16) for the passage of the saw and the location of a plurality of holes (17) for the insertion of guide pins.
7. Dispositivo com proteção e guia para o corte do tecido ósseo de acordo com a reivindicação 1 a 4, caracterizado por uma haste ergonómica (4) com formato e superfície adequados a sua utilização visando a aderência da haste à luva cirúrgica, o conforto e facilidade de uso, sendo que em sua extremidade existe um objeto preferencialmente em formato de gancho para a sustentação de um peso. Protective device and guide for cutting bone tissue according to one of claims 1 to 4, characterized in that an ergonomic rod (4) with a shape and surface suitable for use in order to adhere the rod to the surgical glove, comfort and ease of use, and at its end there is preferably a hook-shaped object for weight support.
PCT/BR2013/000320 2012-12-07 2013-08-23 Device with protection and guide for cutting bone tissue WO2014085882A1 (en)

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BR102012031185A BR102012031185A2 (en) 2012-12-07 2012-12-07 PROTECTIVE DEVICE AND GUIDE FOR BONE TISSUE CUTTING
BR102012031185-2 2012-12-07

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