WO2019195908A1 - Instrument for cataract surgery - Google Patents
Instrument for cataract surgery Download PDFInfo
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- WO2019195908A1 WO2019195908A1 PCT/BR2019/050127 BR2019050127W WO2019195908A1 WO 2019195908 A1 WO2019195908 A1 WO 2019195908A1 BR 2019050127 W BR2019050127 W BR 2019050127W WO 2019195908 A1 WO2019195908 A1 WO 2019195908A1
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- cataract surgery
- cutting
- instrument
- surgery instrument
- cutting blade
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F9/00—Methods or devices for treatment of the eyes; Devices for putting in contact-lenses; Devices to correct squinting; Apparatus to guide the blind; Protective devices for the eyes, carried on the body or in the hand
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F9/00—Methods or devices for treatment of the eyes; Devices for putting in contact-lenses; Devices to correct squinting; Apparatus to guide the blind; Protective devices for the eyes, carried on the body or in the hand
- A61F9/007—Methods or devices for eye surgery
Definitions
- the present invention is contained within the field of application of devices and instruments for surgical procedures, more precisely in the field of ophthalmic surgical procedures.
- the present invention relates to an auxiliary instrument used in ophthalmic surgeries, more specifically in cataract surgeries, a vision disorder common in elderly people, where the invention is intended to perform a circular section within the eye. eyeball, more precisely in the lens capsule.
- cataract is attributed to any process of loss of transparency of the lens, which is a lens behind the iris, whether congenital or acquired opacity, whether or not it results in impaired visual ability of the eye.
- the surgical procedure for cataract treatment consists of removing the lens that has become opaque for replacement with an intraocular lens, thus allowing the patient to regain vision. without the need to wear high-grade glasses, which would be necessary if only the lens was removed.
- a capsulorhexis which consists of an incision in the anterior part of the capsule, which surrounds the lens, is necessary in order to allow the removal of opaque material and the placement of the intraocular lens.
- the most common and best performing capsulorhexis is by constructing it in a circular shape, approximately 5 to 5.5 mm in diameter, and centered with the visual axis of the eye. This diameter is the most used because the most common intraocular lenses have a diameter of 6 mm in general and in this case, what is done is the insertion of the lens into the opening made in the capsule so that its edges are covered by the edges of the lens. capsule, a procedure that makes the positioning of the lens in the capsular bag more stable over time, an especially important condition when using toric lenses, responsible for correcting astigmatism, or multifocal lenses that allow both far and near focus.
- a second option for performing this type of surgical procedure is the use of a femtosecond laser for assisting the cut, which allows it to be performed perfectly, but few patients have access to this technology, either for the high cost. acquisition of the equipment which prevents its availability by the public health network, as well as the high cost embedded in each session of its use.
- the present invention aims to present a surgical instrument for use in surgeries for the treatment of Cataract, which features a system for fixing and cutting the lens capsule that allows a precise and fast cut in the circular shape.
- This objective is achieved by means of a vacuum system applied to the lens capsule, by means of a clamping and clamping ring, which holds said capsule and does not allow its movement during the cutting procedure.
- the present invention provides a system containing an intermediate support and a cutting blade, where the intermediate support is contained in the fixing and cutting ring so that its movement is guided by itself. ring, resulting in a circular shaped cut.
- the present invention also provides a constructive variant comprising a drive knob on its handling cable which allows, via a wire connected to the cutting blade contained in the clamping ring, a drive of such blade via external eye of the patient, thus dispensing with the use of other instruments, such as tweezers, to perform circular sectioning of the lens capsule.
- Figure 1 shows a front view of the Instrument. surgical for use in cataract procedures
- Figure 2 presents an approximate view of the fixation and cutting ring of the surgical instrument, detailing its inner diameter, outer diameter and central cavity;
- Figure 3 presents a front view of the surgical instrument showing the presence of the cutting blade and the intermediate support
- Figure 4 shows a cross-sectional view of the fixing and cutting ring demonstrating its intermediate support provided with the cutting blade
- Figure 5 shows a cross-sectional view of the clamping ring showing its intermediate support without the cutting blade
- Figure 6 shows a front view of the constructive variant of the Clamping and Clamping Instrument
- Figure 7 shows a detailed and approximate view of the fixing and cutting ring of the construction variant containing the cutting blade and the connector wire;
- Figure 8 shows a cross-sectional view of the fixing ring and section of the construction variant, showing the connector wire
- Figure 9 shows a view of the surgical instrument's cutting blade and its constructive variant.
- Surgical Instrument (1) constructed from malleable material, preferably silicone or some similar malleable material, transparent and non-toxic, and said Surgical Instrument (1) is subdivided into a fixing and cutting ring (2) and a manipulation cable (3).
- the fixing and cutting ring (2) has a circular shape, having an inner diameter (2a), an outer diameter (2b) and a height, said inner diameter (2a) smaller than the outer diameter ( 2b). Between the inner diameter (2a) and outer diameter (2b), the clamping and cutting ring (2) has a circular cavity (4) having height and width, said circular cavity (4) extending throughout the circumference of the fixing and cutting ring (2), following the periphery of the inner diameter (2a) of said fixing and cutting ring (2).
- the fixing and cutting ring (2) has in its inner diameter (2a) and outer diameter (2b), vacuum holes (5) which are disposed in the lower portion in its central and peripheral portion, disposed in a similar manner. uniform and equidistant from each other. Such vacuum holes (5) communicate with the internal vacuum cavity of the instrument and through this cavity also with the manipulation cable cavity (3).
- the Surgical Instrument (1) has a pyramidal-shaped cutting blade (6) located in the circular cavity (4), and such cutting blade (6) has freedom of movement throughout said circular cavity ( 4). This cutting blade (6) has at its most extreme portion, that is, its tip, a cutting edge responsible for penetrating the lens of the eye and splitting the eye capsule.
- the cutting blade (6) is connected to the circular cavity (4) of the surgical instrument (1) by means of an intermediate support (8).
- Said intermediate support (8) has essentially rectangular trunk, so that in its side portions there are two recesses, substantially square, being opposite each other, where such recesses receive in one side the outer wall of the inner diameter (2a) and the other side is the outer wall of the inner diameter (2b).
- the intermediate support (8) has in its upper portion a central recess (8a) in semicircular shape, and in its lower portion, the cutting blade (6) is located.
- the Surgical Instrument (1) is notable for its easy insertion into the patient's eye, due to the malleability of the cutting and fixation ring (2), thus eliminating the need for an excessively large incision and therefore required longer healing time.
- the Surgical Instrument (1) is positioned to allow the fixation of the lens capsule by means of the cutting and clamping ring (2).
- This fixation takes place by means of vacuum and through the vacuum holes (5), and this vacuum can be created either by its own equipment present in ophthalmic surgical centers, phacoemulsifier, or even by means of a conventional syringe, once that the inside of the handling cable (3) is cylindrical and contains a watertight inner channel that enables the connection of both Instruments.
- the surgeon creates a clamping vacuum and the capsule is fixed in such a way that the cutting blade ( 6) automatically enters its surface and performs a cut without moving said capsule, thus ensuring a more satisfactory result with respect to the shape of the cut itself.
- the cutting of the lens capsule is accomplished by moving the cutting blade (6) which is done with the aid of a hook inserted into the eye at the same time as the Surgical Instrument (1), so as to that the hook tip, or similar Instrument, fits into the center recess (8a) and moves the cutting blade (6) in a continuously guided motion, resulting in a more accurate cut and very close to a perfect circle once that the blade will move through the delimitation of the circular cavity (4).
- the Surgical Instrument (1) presents a constructive variant (9), where the movement of the cutting blade (6) takes place automatically, without the aid of a hook but by means of a push button ( 7) present in the handling cable (3a) which communicates with said cutting blade by means of a connector wire (10).
- the construction variant (9) has a cut-and-fasten ring (12) which contains substantially rectangular shaped intermediate support (11), containing in its upper portion a peripheral recess for engaging the connector wire (10).
- the cutting and clamping ring (12) has an outer diameter (12c), a central cavity (12b) and an inner diameter (12a), with the inner diameter (12a) and outer diameter (12c) responsible for vacuum contact with each other. to the patient's lens capsule and the central cavity (12b) the cutting blade drive guide (6).
- both the inner diameter (12a) and the outer diameter (12c) are provided with vacuum holes (5).
- the handling cable (3a) of the construction variant (9) has a drive button (7) with axial freedom of movement along the length of said handling cable (3a). This axial movement is responsible for the movement of the cutting blade (6), a see that the connector wire (10) connected to the cutter blade (6) connects at its other end to the trigger button (7).
- the constructive variant (9) has as its main technical characteristics the fact that it does not require the use of secondary instruments, such as tweezers or similar instruments, to perform circular cutting in the lens capsule, since its actuating button (7). ) drives the cutting blade (6) externally with respect to the lens, as well as the fact that its cutting and fixing ring (12) does not have superior openings, contributing to the formation of a more powerful vacuum, ensuring a more precise cut in the lens capsule.
- Both the surgical instrument (1) and its constructive variant (9) stand out against the other options presented in the state of the art, mainly for its efficiency, speed and precision in performing the lens capsule cutting, and also in its low production value, resulting in an affordable instrument and extremely useful in cataract surgery.
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Abstract
Description
“INSTRUMENTO PARA CIRURGIA DE CATARATA” “CATARACT SURGERY INSTRUMENT”
CAMPO DE APLICAÇÃO APPLICATION FIELD
[001 ] A presente invenção está contida no campo de aplicação dos dispositivos e Instrumentos para procedimentos cirúrgicos, mais precisamente no campo dos procedimentos cirúrgicos oftalmológicos. [001] The present invention is contained within the field of application of devices and instruments for surgical procedures, more precisely in the field of ophthalmic surgical procedures.
[002] A presente invenção se refere a um instrumento auxiliar utilizado em cirurgias oftalmológicas, mais precisamente nas cirurgias de catarata, doença que acomete a visão, comum em pessoas idosas, onde a referida invenção tem o objetivo de efetuar um corte circular no interior do globo ocular, mais precisamente na cápsula do cristalino. [002] The present invention relates to an auxiliary instrument used in ophthalmic surgeries, more specifically in cataract surgeries, a vision disorder common in elderly people, where the invention is intended to perform a circular section within the eye. eyeball, more precisely in the lens capsule.
DESCRIÇÃO DO ESTADO DA TÉCNICA DESCRIPTION OF TECHNICAL STATE
[003] Um dos problemas oftalmológicos mais incidentes na população mundial é a catarata. O termo catarata é atribuído a todo e qualquer processo de perda de transparência do cristalino, que se trata de uma lente situada atrás da íris, seja tal opacidade congénita ou adquirida, independente ou não de resultar em prejuízos a capacidade visual do olho. One of the most common eye problems in the world population is cataract. The term cataract is attributed to any process of loss of transparency of the lens, which is a lens behind the iris, whether congenital or acquired opacity, whether or not it results in impaired visual ability of the eye.
[004] Segundo a Organização Mundial da Saúde (OMS), a catarata é responsável por cerca de 47% dos casos de cegueira registrados no mundo, sendo sua incidência maior em pessoas idosas e a única maneira de tratá-lo de forma eficaz é através de procedimento cirúrgico. [004] According to the World Health Organization (WHO), cataract accounts for about 47% of the world's blindness, with its highest incidence in the elderly and the only way to treat it effectively is through of surgical procedure.
[005] O procedimento cirúrgico para tratamento da catarata consiste na retirada do cristalino que se tornou opaco para substituição por uma lente intraocular, permitindo assim ao paciente a recuperação da visão sem a necessidade de utilização de óculos com alto grau, o que seria necessário caso houvesse apenas a retirada do cristalino. Para tanto, se faz necessária uma capsulorrexe, a qual consiste de uma incisão na parte anterior da cápsula, cápsula esta que envolve o cristalino, de forma a possibilitar a retirada do material opaco e a colocação da lente intraocular. [005] The surgical procedure for cataract treatment consists of removing the lens that has become opaque for replacement with an intraocular lens, thus allowing the patient to regain vision. without the need to wear high-grade glasses, which would be necessary if only the lens was removed. For this, a capsulorhexis, which consists of an incision in the anterior part of the capsule, which surrounds the lens, is necessary in order to allow the removal of opaque material and the placement of the intraocular lens.
[006] Atualmente, a maneira mais comum de se realizar a capsulorrexe e também a que melhor apresenta resultados é construindo-a de forma circular, com aproximadamente 5 a 5,5 mm de diâmetro, e centralizada com o eixo visual do olho. Esse diâmetro é o mais usado pelo fato de as lentes intraoculares mais comuns possuírem diâmetro de 6 mm em geral e nesse caso, o que se efetua é a inserção da lente na abertura efetuada na cápsula de forma que as suas bordas sejam cobertas pelas bordas da cápsula, procedimento este que faz com que o posicionamento da lente no saco capsular seja mais estável ao longo do tempo, condição especialmente importante quando se utilizam lentes tóricas, responsáveis por corrigir astigmatismo, ou multifocais que permitem foco tanto para longe quanto para perto. [006] Currently, the most common and best performing capsulorhexis is by constructing it in a circular shape, approximately 5 to 5.5 mm in diameter, and centered with the visual axis of the eye. This diameter is the most used because the most common intraocular lenses have a diameter of 6 mm in general and in this case, what is done is the insertion of the lens into the opening made in the capsule so that its edges are covered by the edges of the lens. capsule, a procedure that makes the positioning of the lens in the capsular bag more stable over time, an especially important condition when using toric lenses, responsible for correcting astigmatism, or multifocal lenses that allow both far and near focus.
[007] O problema na realização desse tipo de procedimento reside no fato de que os cortes que hoje são efetuados na cápsula são criados em geral manualmente com auxílio de uma pinça ou de agulhas e desta maneira, sujeitas a imperfeições em sua construção, já que dependem da habilidade do cirurgião em criar um corte circular perfeito, o que é muito difícil de ser executado até mesmo quando realizado por um mesmo cirurgião em cada um dos olhos do paciente, condição que se complica mais quando se trata de cirurgiões distintos com habilidades diferentes. [007] The problem with performing this type of procedure lies in the fact that the cuts that are made today in the capsule are usually created manually with the aid of tweezers or needles and thus subject to imperfections in their construction, since depend on the surgeon's ability to create a perfect circular cut, which is very difficult to perform even when performed by the same surgeon on each one of the patient's eyes, a condition that is most complicated when dealing with different surgeons with different abilities.
[008] Desta maneira, mesmo com cirurgiões muito experientes, não é incomum que esses cortes não se adeqúem ao padrão requerido para esse tipo de procedimento, o que pode comprometer o resultado cirúrgico em termos de qualidade visual ou até mesmo levar a complicações cirúrgicas como o rompimento da cápsula o que pode vir a comprometer seriamente a capacidade visual do paciente. Thus, even with very experienced surgeons, it is not uncommon for these cuts not to fit the standard required for this type of procedure, which may compromise the surgical outcome in terms of visual quality or even lead to surgical complications such as rupture of the capsule which may seriously compromise the patient's visual ability.
[009] Uma segunda opção para realização deste tipo de procedimento cirúrgico é a utilização de um laser de femtosegundo para auxilio no corte, o que permite que este seja realizado de maneira perfeita, mas poucos pacientes têm acesso a essa tecnologia, seja pelo alto custo de aquisição do equipamento o que impede sua disponibilização pela rede pública de saúde, como também o alto custo embutido em cada sessão de utilização do mesmo. A second option for performing this type of surgical procedure is the use of a femtosecond laser for assisting the cut, which allows it to be performed perfectly, but few patients have access to this technology, either for the high cost. acquisition of the equipment which prevents its availability by the public health network, as well as the high cost embedded in each session of its use.
[0010] Outro fato que dificulta a utilização do laser de femtosegundo nos procedimentos cirúrgicos envolvendo a catarata é que essa técnica não é unanimidade no meio cientifico, uma vez que existe um questionamento no sentido de o uso do laser como instrumento de corte resultar em um corte com menos resistência a tensões que podem ocorrer durante a cirurgia do que o corte realizado manualmente. Another fact that hinders the use of femtosecond laser in surgical procedures involving cataract is that this technique is not unanimous in the scientific environment, since there is a question that the use of laser as a cutting instrument results in a cutting with less resistance to stress that may occur during surgery than cutting performed manually.
BREVE DESCRIÇÃO DA INVENÇÃO BRIEF DESCRIPTION OF THE INVENTION
[001 1 ] A presente invenção tem como objetivo apresentar um Instrumento cirúrgico para utilização em cirurgias para tratamento de catarata, o qual apresenta um sistema de fixação e corte da cápsula do cristalino que possibilita um corte preciso e rápido no formato circular. [001 1] The present invention aims to present a surgical instrument for use in surgeries for the treatment of Cataract, which features a system for fixing and cutting the lens capsule that allows a precise and fast cut in the circular shape.
[0012] T al objetivo é alcançado através de um sistema de vácuo aplicado junto à cápsula do cristalino, através de um anel de fixação e corte, o qual prende a referida cápsula, não permitindo a sua movimentação durante o procedimento de corte. This objective is achieved by means of a vacuum system applied to the lens capsule, by means of a clamping and clamping ring, which holds said capsule and does not allow its movement during the cutting procedure.
[0013] Juntamente com o sistema de vácuo, a presente invenção apresenta um sistema contendo um suporte intermediário e uma lâmina de corte, onde o suporte intermediário está contido no anel de fixação e corte de maneira que a sua movimentação é guiada por meio do próprio anel, resultando em um corte em formato circular. Together with the vacuum system, the present invention provides a system containing an intermediate support and a cutting blade, where the intermediate support is contained in the fixing and cutting ring so that its movement is guided by itself. ring, resulting in a circular shaped cut.
[0014] A presente invenção apresenta também uma variante construtiva compreendendo um botão de acionamento em seu cabo de manipulação o qual permite, através de um fio conectado junto a lâmina de corte contida no anel de fixação e corte, um acionamento de tal lâmina por via externa do olho do paciente, dispensando, assim, a utilização de outros Instrumentos, tais como pinças, para a realização do corte circular na cápsula do cristalino. [0014] The present invention also provides a constructive variant comprising a drive knob on its handling cable which allows, via a wire connected to the cutting blade contained in the clamping ring, a drive of such blade via external eye of the patient, thus dispensing with the use of other instruments, such as tweezers, to perform circular sectioning of the lens capsule.
BREVE DECRICÂO DOS DESENHOS BRIEF DESCRIPTION OF DRAWINGS
[0015] A matéria objeto desta Invenção ficará totalmente clara em seus aspectos técnicos a partir da descrição pormenorizada que será feita com base nas figuras abaixo relacionadas, nas quais: [0015] The subject matter of this Invention will be fully clear in its technical aspects from the detailed description which will be made from the following related figures, in which:
a figura 1 apresenta uma vista frontal do Instrumento cirúrgico para utilização em procedimentos de catarata; Figure 1 shows a front view of the Instrument. surgical for use in cataract procedures;
a figura 2 apresenta uma vista aproximada do anel de fixação e corte do Instrumento cirúrgico, detalhando seu diâmetro interno, diâmetro externo e cavidade central; Figure 2 presents an approximate view of the fixation and cutting ring of the surgical instrument, detailing its inner diameter, outer diameter and central cavity;
a figura 3 apresenta uma vista frontal do Instrumento cirúrgico evidenciando a presença da lâmina de corte e do suporte intermediário; Figure 3 presents a front view of the surgical instrument showing the presence of the cutting blade and the intermediate support;
a figura 4 apresenta uma vista em corte transversal do anel de fixação e corte demonstrando o seu suporte intermediário dotado da lâmina de corte; Figure 4 shows a cross-sectional view of the fixing and cutting ring demonstrating its intermediate support provided with the cutting blade;
a figura 5 apresenta uma vista em corte transversal do anel de fixação e corte demonstrando o seu suporte intermediário sem a lâmina de corte; Figure 5 shows a cross-sectional view of the clamping ring showing its intermediate support without the cutting blade;
a figura 6 apresenta uma vista frontal da variante construtiva do Instrumento de fixação e corte; Figure 6 shows a front view of the constructive variant of the Clamping and Clamping Instrument;
a figura 7 apresenta uma vista detalhada e aproximada do anel de fixação e corte da variante construtiva contendo a lâmina de corte e o fio conector; Figure 7 shows a detailed and approximate view of the fixing and cutting ring of the construction variant containing the cutting blade and the connector wire;
a figura 8 apresenta uma vista em corte transversal do anel de fixação e corte da variante construtiva, apresentando o fio conector; e Figure 8 shows a cross-sectional view of the fixing ring and section of the construction variant, showing the connector wire; and
a figura 9 apresenta uma vista da lâmina de corte do Instrumento cirúrgico e de sua variante construtiva. DESCRIÇÃO DETALHADA DA INVENÇÃO Figure 9 shows a view of the surgical instrument's cutting blade and its constructive variant. DETAILED DESCRIPTION OF THE INVENTION
[0016] De conformidade com os objetivos apresentados por meio da breve descrição, o presente pedido de patente “INSTRUMENTO PARA CIRURGIA DE CATARATA”, apresenta um Instrumento cirúrgico (1 ), construído em material maleável, preferencialmente silicone ou algum material congénere, maleável, transparente e atóxico, sendo que o dito Instrumento cirúrgico (1 ) subdivide-se em um anel de fixação e corte (2) e uma cabo de manipulação (3). In accordance with the objectives set forth herein, the present patent application "CATARACT SURGERY INSTRUMENT" discloses a Surgical Instrument (1), constructed from malleable material, preferably silicone or some similar malleable material, transparent and non-toxic, and said Surgical Instrument (1) is subdivided into a fixing and cutting ring (2) and a manipulation cable (3).
[0017] O anel de fixação e corte (2) possui um formato circular, sendo dotado de um diâmetro interno (2a), um diâmetro externo (2b) e uma altura, sendo dito diâmetro interno (2a) menor que o diâmetro externo (2b). Entre o diâmetro interno (2a) e diâmetro externo (2b), o anel de fixação e corte (2) possui uma cavidade circular (4) dotada de altura e largura, sendo a referida cavidade circular (4) extensiva por toda a circunferência do anel de fixação e corte (2), acompanhando a periferia do diâmetro interno (2a) do dito anel de fixação e corte (2). The fixing and cutting ring (2) has a circular shape, having an inner diameter (2a), an outer diameter (2b) and a height, said inner diameter (2a) smaller than the outer diameter ( 2b). Between the inner diameter (2a) and outer diameter (2b), the clamping and cutting ring (2) has a circular cavity (4) having height and width, said circular cavity (4) extending throughout the circumference of the fixing and cutting ring (2), following the periphery of the inner diameter (2a) of said fixing and cutting ring (2).
[0018] O anel de fixação e corte (2) possui em seu diâmetro interno (2a) e diâmetro externo (2b), orifícios de vácuo (5) os quais estão dispostos na porção inferior em sua porção central e periférica, dispostos de maneira uniforme e equidistantes entre si. Tais orifícios de vácuo (5) comunicam-se com a cavidade de vácuo interna do instrumento e através desta cavidade também com a cavidade do cabo de manipulação (3). [0019] O Instrumento cirúrgico (1 ) apresenta uma lâmina de corte (6), com formato piramidal, localizada na cavidade circular (4), sendo que tal lâmina de corte (6) possui liberdade de movimentação por toda a dita cavidade circular (4). Essa lâmina de corte (6) apresenta em sua porção mais extrema, ou seja, a sua ponta, um fio de corte responsável por penetrar no cristalino do olho e realizar a cisão da cápsula do mesmo. The fixing and cutting ring (2) has in its inner diameter (2a) and outer diameter (2b), vacuum holes (5) which are disposed in the lower portion in its central and peripheral portion, disposed in a similar manner. uniform and equidistant from each other. Such vacuum holes (5) communicate with the internal vacuum cavity of the instrument and through this cavity also with the manipulation cable cavity (3). The Surgical Instrument (1) has a pyramidal-shaped cutting blade (6) located in the circular cavity (4), and such cutting blade (6) has freedom of movement throughout said circular cavity ( 4). This cutting blade (6) has at its most extreme portion, that is, its tip, a cutting edge responsible for penetrating the lens of the eye and splitting the eye capsule.
[0020] A lâmina de corte (6) está conectada a cavidade circular (4) do Instrumento cirúrgico (1 ) por meio de um suporte intermediário (8). Dito suporte intermediário (8) possui essencialmente tronco retangular, de maneira que em suas porções laterais existem dois rebaixos, substancialmente quadrados, sendo opostos entre si, onde tais rebaixos recebem em seu interior, em um lado a parede externa do diâmetro interno (2a) e o de outro lado a parede externa do diâmetro interno (2b). O suporte intermediário (8) possui em sua porção superior, um rebaixo central (8a) em formato semicircular, sendo que em sua porção inferior, localiza-se a lâmina de corte (6). The cutting blade (6) is connected to the circular cavity (4) of the surgical instrument (1) by means of an intermediate support (8). Said intermediate support (8) has essentially rectangular trunk, so that in its side portions there are two recesses, substantially square, being opposite each other, where such recesses receive in one side the outer wall of the inner diameter (2a) and the other side is the outer wall of the inner diameter (2b). The intermediate support (8) has in its upper portion a central recess (8a) in semicircular shape, and in its lower portion, the cutting blade (6) is located.
[0021 ] O Instrumento cirúrgico (1 ) notabiliza-se por sua fácil inserção no interior do olho do paciente, decorrente da maleabilidade do anel de corte e fixação (2), dispensando, assim, a necessidade de uma incisão demasiadamente grande e consequentemente que demandasse maior tempo de cicatrização. The Surgical Instrument (1) is notable for its easy insertion into the patient's eye, due to the malleability of the cutting and fixation ring (2), thus eliminating the need for an excessively large incision and therefore required longer healing time.
[0022] Uma vez no interior do olho do paciente, o Instrumento cirúrgico (1 ) é posicionado de maneira a permitir a fixação da cápsula do cristalino por meio do anel de corte e fixação (2). Essa fixação se dá por meio de vácuo e através dos orifícios de vácuo (5), sendo que este vácuo pode ser criado tanto por um equipamento próprio presente nos centros cirúrgicos oftalmológicos, facoemulsificador, ou até mesmo por meio de uma seringa convencional, uma vez que o interior do cabo de manipulação (3) é cilíndrico e contém um canal interno estanque que possibilita a conexão de ambos os Instrumentos. Once inside the patient's eye, the Surgical Instrument (1) is positioned to allow the fixation of the lens capsule by means of the cutting and clamping ring (2). This fixation takes place by means of vacuum and through the vacuum holes (5), and this vacuum can be created either by its own equipment present in ophthalmic surgical centers, phacoemulsifier, or even by means of a conventional syringe, once that the inside of the handling cable (3) is cylindrical and contains a watertight inner channel that enables the connection of both Instruments.
[0023] Quando o Instrumento cirúrgico (1 ), por meio do anel de corte e fixação (2), toca a cápsula do cristalino, o cirurgião cria um vácuo de fixação e a cápsula é fixada de tal maneira que a lâmina de corte (6), automaticamente adentra à sua superfície e realiza um corte sem a movimentação da referida cápsula, garantindo, assim, um resultado mais satisfatório no tocante ao formato do corte em si. When the Surgical Instrument (1), by means of the cutting and clamping ring (2), touches the lens capsule, the surgeon creates a clamping vacuum and the capsule is fixed in such a way that the cutting blade ( 6) automatically enters its surface and performs a cut without moving said capsule, thus ensuring a more satisfactory result with respect to the shape of the cut itself.
[0024] O corte da capsula do cristalino é realizado através da movimentação da lâmina de corte (6) a qual se dá com o auxílio de um gancho introduzido no interior do olho, ao mesmo tempo que o Instrumento cirúrgico (1 ), de maneira que a ponta do gancho, ou Instrumento similar, encaixa- se no rebaixo central (8a) e movimenta a lamina de corte (6) em um movimento continuamente guiado, resultando em um corte mais preciso e muito próximo de um círculo perfeito, uma vez que a lâmina movimentar-se-á pela delimitação da cavidade circular (4). The cutting of the lens capsule is accomplished by moving the cutting blade (6) which is done with the aid of a hook inserted into the eye at the same time as the Surgical Instrument (1), so as to that the hook tip, or similar Instrument, fits into the center recess (8a) and moves the cutting blade (6) in a continuously guided motion, resulting in a more accurate cut and very close to a perfect circle once that the blade will move through the delimitation of the circular cavity (4).
[0025] A cirurgia atual da Catarata é feita utilizando- se duas incisões na córnea, uma maior, a principal, e uma menor, a paracentese. Para o uso do instrumento cirúrgico (1 ) este é inserido pela incisão principal e o gancho auxiliar pela paracentese. Desta forma, o instrumento proposto se utiliza das incisões normalmente realizadas neste procedimento e não requer novas incisões para a sua utilização. Current cataract surgery is performed using two corneal incisions, one major, one major, and one minor, paracentesis. For the use of the surgical instrument (1) it is inserted through the main incision and the auxiliary hook through paracentesis. Thus, the proposed instrument uses the incisions normally made in this procedure and does not require new incisions for its use.
[0026] O Instrumento cirúrgico (1 ) apresenta uma variante construtiva (9), onde a movimentação da lâmina de corte (6) se dá de maneira automática, sem a necessidade do auxílio de um gancho e sim por meio de um botão acionador (7), presente no cabo de manipulação (3a), o qual comunica-se com a dita lâmina de corte por meio de um fio conector (10). The Surgical Instrument (1) presents a constructive variant (9), where the movement of the cutting blade (6) takes place automatically, without the aid of a hook but by means of a push button ( 7) present in the handling cable (3a) which communicates with said cutting blade by means of a connector wire (10).
[0027] A variante construtiva (9) possui um anel de corte e fixação (12) o qual contém suporte intermediário (1 1 ) em formato substancialmente retangular, contendo em sua porção superior um rebaixo periférico para encaixe do fio conector (10). O anel de corte e fixação (12) possui um diâmetro externo (12c), uma cavidade central (12b) e diâmetro interno (12a), sendo o diâmetro interno (12a) e o diâmetro externo (12c) responsável pelo contato a vácuo junto à cápsula do cristalino do paciente e a cavidade central (12b) a guia de movimentação para lâmina de corte (6). No anel de corte e fixação (12), tanto o diâmetro interno (12a) quanto o diâmetro externo (12c) são dotados de orifícios de vácuo (5). The construction variant (9) has a cut-and-fasten ring (12) which contains substantially rectangular shaped intermediate support (11), containing in its upper portion a peripheral recess for engaging the connector wire (10). The cutting and clamping ring (12) has an outer diameter (12c), a central cavity (12b) and an inner diameter (12a), with the inner diameter (12a) and outer diameter (12c) responsible for vacuum contact with each other. to the patient's lens capsule and the central cavity (12b) the cutting blade drive guide (6). In the cutting and clamping ring (12), both the inner diameter (12a) and the outer diameter (12c) are provided with vacuum holes (5).
[0028] O cabo de manipulação (3a) da variante construtiva (9) possui um botão acionador (7) com liberdade de movimentação axial no sentido do comprimento do referido cabo de manipulação (3a). Essa movimentação axial é responsável pelo movimento da lâmina de corte (6), uma ver que o fio conector (10) conectado a lâmina de corte (6), conecta-se, em sua outra extremidade ao botão acionador (7). The handling cable (3a) of the construction variant (9) has a drive button (7) with axial freedom of movement along the length of said handling cable (3a). This axial movement is responsible for the movement of the cutting blade (6), a see that the connector wire (10) connected to the cutter blade (6) connects at its other end to the trigger button (7).
[0029] A variante construtiva (9) possui como características técnicas principais os fatos de dispensar a utilização de instrumentos secundários, como a pinça ou instrumento similar, para realização do corte circular na cápsula do cristalino, uma vez que o seu botão acionador (7) aciona, de maneira externa com relação ao cristalino, a lâmina de corte (6), bem como, o fato de seu anel de corte e fixação (12) não possuir aberturas superiores, contribuir para a formação de uma vácuo mais potente, garantindo um corte mais preciso na cápsula do cristalino. The constructive variant (9) has as its main technical characteristics the fact that it does not require the use of secondary instruments, such as tweezers or similar instruments, to perform circular cutting in the lens capsule, since its actuating button (7). ) drives the cutting blade (6) externally with respect to the lens, as well as the fact that its cutting and fixing ring (12) does not have superior openings, contributing to the formation of a more powerful vacuum, ensuring a more precise cut in the lens capsule.
[0030] Tanto o Instrumento cirúrgico (1 ) quanto a sua variante construtiva (9) destacam-se frente às outras opções apresentadas no estado da técnica, principalmente pela sua eficiência, rapidez e precisão na realização do corte da cápsula do cristalino, e também no seu baixo valor de produção, resultando em um instrumento acessível economicamente e de extrema utilidade em cirurgias para tratamento de catarata. Both the surgical instrument (1) and its constructive variant (9) stand out against the other options presented in the state of the art, mainly for its efficiency, speed and precision in performing the lens capsule cutting, and also in its low production value, resulting in an affordable instrument and extremely useful in cataract surgery.
[0031 ] Deve ficar entendido que a presente descrição não limita a aplicação aos detalhes aqui descritos e que a invenção é capaz de outras modalidades e de ser praticada ou executada em uma variedade de modos, dentro do escopo das reivindicações. Embora tenham sido usados termos específicos, tais termos devem ser interpretados em sentido genérico e descritivo, e não com o propósito de limitação. It should be understood that the present disclosure does not limit application to the details described herein and that the invention is capable of other embodiments and of being practiced or performed in a variety of ways within the scope of the claims. Although specific terms have been used, such terms should be interpreted in a generic and descriptive sense, not for the purpose of limitation.
Claims
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| BR102018007536-5A BR102018007536B1 (en) | 2018-04-13 | CATARACT SURGERY INSTRUMENT | |
| BRBR102018007536-5 | 2018-04-13 |
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| Publication Number | Publication Date |
|---|---|
| WO2019195908A1 true WO2019195908A1 (en) | 2019-10-17 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/BR2019/050127 Ceased WO2019195908A1 (en) | 2018-04-13 | 2019-04-08 | Instrument for cataract surgery |
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| Country | Link |
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| WO (1) | WO2019195908A1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| USD1064270S1 (en) | 2022-08-26 | 2025-02-25 | Henry Ford Health System | Capsulorhexis guide |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2247174B (en) * | 1990-08-14 | 1994-06-29 | Ahmed Salih Mahmud | Surgical knife |
| US20090048619A1 (en) * | 2007-08-17 | 2009-02-19 | Eitan Sobel | Capsulorhexis cutter and technique |
| US20100185222A1 (en) * | 2006-08-11 | 2010-07-22 | Mynosys Cellular Devices, Inc. | Vacuum-Assisted Microscale Cutting Device |
| BR202016020982U2 (en) * | 2016-09-12 | 2018-03-27 | Raposo Monsanto André | CATARACT SURGERY INSTRUMENT AND PROCEDURE FOR CIRCULAR CUTTING |
-
2019
- 2019-04-08 WO PCT/BR2019/050127 patent/WO2019195908A1/en not_active Ceased
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2247174B (en) * | 1990-08-14 | 1994-06-29 | Ahmed Salih Mahmud | Surgical knife |
| US20100185222A1 (en) * | 2006-08-11 | 2010-07-22 | Mynosys Cellular Devices, Inc. | Vacuum-Assisted Microscale Cutting Device |
| US20090048619A1 (en) * | 2007-08-17 | 2009-02-19 | Eitan Sobel | Capsulorhexis cutter and technique |
| BR202016020982U2 (en) * | 2016-09-12 | 2018-03-27 | Raposo Monsanto André | CATARACT SURGERY INSTRUMENT AND PROCEDURE FOR CIRCULAR CUTTING |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| USD1064270S1 (en) | 2022-08-26 | 2025-02-25 | Henry Ford Health System | Capsulorhexis guide |
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|---|---|
| BR102018007536A2 (en) | 2019-10-29 |
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