Disclosure of Invention
The technical problem to be solved by the invention is to provide a femtosecond laser cataract surgery instrument and an application method of the femtosecond laser cataract surgery instrument aiming at the defects in the prior art.
The technical scheme adopted for solving the technical problems is as follows:
The femtosecond laser cataract surgical instrument comprises a support, wherein a femtosecond laser generator is arranged on the support, the femtosecond laser cataract surgical instrument further comprises a suction pipe, an operating handle is arranged at the tail end of the suction pipe and is connected with a negative pressure generator, an arc suction head with a downward opening is arranged at the front end of the suction pipe, an opening is arranged on the upper surface of the suction head, a first reflecting mirror is arranged at the opening and is used for reflecting femtosecond laser beams entering through the opening into an inner hole of the suction head to break nuclei, meanwhile, the lower end of the first reflecting mirror stretches into the inner hole of the suction head and forms a suction gap with the inner wall of the inner hole, a focus indicating unit for indicating the focus position of the current femtosecond laser generator is arranged on the support, the focus indicating unit comprises a plurality of obliquely downward indicating beam generators, the intersection points of the beams emitted by the indicating beam generators are focuses of the femtosecond laser generators, and a control unit for controlling the operation of the femtosecond laser generators and the negative pressure generator is arranged on the operating handle.
The invention discloses a femtosecond laser cataract surgery instrument, wherein the front end of an inner hole of a suction head is provided with a second reflecting mirror, the direction of a first reflecting mirror reflecting a femtosecond laser beam faces to the second reflecting mirror, and the direction of the second reflecting mirror reflecting the femtosecond laser beam faces to an aspiration gap.
The femtosecond laser cataract surgery instrument provided by the invention has the advantages that the first reflecting mirror is in a support leg triangle shape, a right-angle side of the first reflecting mirror seals the opening, the other right-angle side is close to the second reflecting mirror, a reflecting coating is arranged on the bevel edge, and the lower end part of the first reflecting mirror and the inner wall of the inner hole form the suction gap.
The invention relates to a femtosecond laser cataract surgery instrument, wherein the second reflecting mirror is a plane mirror and is obliquely and fixedly arranged at the bending position of an inner hole of a suction head.
The femtosecond laser cataract surgery instrument of the present invention, wherein the upper surface of the first mirror is lower than the edge of the opening.
The femtosecond laser cataract surgery instrument provided by the invention, wherein the edge of the opening is provided with a conical surface.
The invention discloses a femtosecond laser cataract surgery instrument, wherein the focus indication unit comprises a bracket for fixing a plurality of indication beam generators, and a manipulator for adjusting deflection and lifting of the bracket is arranged on the bracket.
A method for applying a femtosecond laser cataract surgery instrument, which is applied to the femtosecond laser cataract surgery instrument, wherein the method comprises the following steps:
After the femtosecond laser generator finishes the pre-splitting operation of the crystalline lens, the focus of the femtosecond laser generator moves to a first position close to the edge of the crystalline lens;
Extending the suction tube into the cornea through the opening of the cornea, and moving the suction tube by taking the first position as the center, wherein the operation of sucking broken nuclei for a plurality of times in the moving process;
sucking the lens fragments after pre-splitting, moving to a focus position indicated by the opening and focus indicating unit, controlling the operation of the femtosecond laser generator by the control unit, reflecting the emitted laser beam by the first reflecting mirror, and then crushing the lens fragments sucked into the inner hole of the suction head, wherein substances after crushing the cores are sucked away by the suction gap;
the focus of the femtosecond laser generator moves to a second position close to the edge of the crystalline lens nucleus, the suction tube moves by taking the second position as the center, and the nucleus breaking sucking operation is performed for a plurality of times in the moving process;
the focal point of the femtosecond laser generator moves to a third position close to the edge of the crystalline lens nucleus, the suction tube moves by taking the third position as the center, and the nucleus breaking sucking operation is performed for a plurality of times in the moving process;
the focal point of the femtosecond laser generator moves to a fourth position close to the center of the crystalline lens nucleus, the suction tube moves by taking the fourth position as the center, and the nucleus breaking sucking operation is performed for a plurality of times in the moving process;
the focal point of the femtosecond laser generator moves to a fifth position close to the edge of the crystalline lens nucleus, the suction tube moves by taking the fifth position as the center, and the nucleus breaking sucking operation is performed for a plurality of times in the moving process.
After the femtosecond laser generator finishes the operation of pre-splitting the nucleus of the crystalline lens, the focus of the femtosecond laser generator moves to a first position close to the edge of the nucleus of the crystalline lens; the method comprises the steps of stretching a suction tube into a cornea through an opening of the suction head, taking a first position as a center, carrying out a plurality of times of suction and crushing operations in the moving process, moving a lens fragment after presplitting to a focus position indicated by an opening and focus indication unit, controlling a femtosecond laser generator to operate through a control unit, reflecting a laser beam emitted by the control unit through a first reflecting mirror, crushing the lens fragment sucked into an inner hole of the suction head, sucking away substances after the crushing through a suction gap, moving a focus of the femtosecond laser generator to a second position close to the edge of the lens core, moving the suction tube to the second position as the center, carrying out a plurality of times of suction and crushing operations in the moving process, moving the focus of the femtosecond laser generator to a third position close to the edge of the lens core, carrying out a plurality of times of suction and crushing operations in the moving process to a fourth position close to the center of the lens core, and carrying out a plurality of times of suction and crushing operations in the moving the focus of the femtosecond laser generator to a fifth position close to the edge of the lens core;
By adopting the method, the damage caused by ultrasonic energy is avoided without applying ultrasonic energy, the fragments are difficult to clean because the fragments are thoroughly cleaned and cannot be formed in large scale, the adaptability to the lens of the patient in different conditions is good, the complex calculation on the precision of the broken nucleus of the lens of the patient in different conditions is not needed, the improvement on the suction head is very small, and the cost can be controlled in an acceptable range, so that the industrial problem encountered in the current femtosecond laser cataract operation is solved.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention more apparent, the following description will be made in detail with reference to the technical solutions in the embodiments of the present invention, and it is apparent that the described embodiments are some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by a person skilled in the art without any inventive effort, are intended to be within the scope of the present invention, based on the embodiments of the present invention.
The invention relates to a femtosecond laser cataract surgery instrument of a preferred embodiment, as shown in fig. 1, and referring to fig. 2 and 3, which comprises a support 1, wherein a femtosecond laser generator 2 is arranged on the support 1, a suction pipe 3 is also arranged on the support 1, the tail end of the suction pipe 3 is provided with an operating handle 30 and is connected with a negative pressure generator 4, the front end of the suction pipe 3 is provided with an arc suction head 5 with a downward opening, the upper surface of the suction head 5 is provided with an opening 50, a first reflecting mirror 51 is arranged at the opening 50 and is used for reflecting a femtosecond laser beam entering from the opening 50 into an inner hole of the suction head 5 for nucleus breaking, the lower end of the first reflecting mirror 51 extends into the inner hole of the suction head 5 and forms a suction gap 52 with the inner wall of the inner hole, the support 1 is provided with a focus indicating unit 6 for indicating the focus position of the current femtosecond laser generator 2, the focus indicating unit 6 comprises a plurality of indicating beam generators 60 which are inclined downwards, and the intersection point of the beams emitted by the indicating beam generators 60 is the focus of the femtosecond laser generator 2, and the control unit 31 for controlling the operation of the negative pressure generator 4 is arranged on the operating handle 30;
After the femtosecond laser generator 2 completes the operation of pre-cleaving the lens (cornea opening, femtosecond laser capsulotomy, capsulorhexis, pre-cleaving the lens are performed in the prior art, which is not described in detail), the focal point of the femtosecond laser generator 2 is moved to a first position 80 near the edge of the lens core;
Sucking the pre-cleaved lens fragments, moving to a focus position indicated by the opening 50 and the focus indication unit 6, controlling the operation of the femtosecond laser generator 2 by the control unit 31, and crushing the lens fragments sucked into the inner hole of the suction head 5 after the emitted laser beams are reflected by the first reflecting mirror 51, wherein the crushed substances are sucked away by the suction gap 52;
The focus of the femtosecond laser generator 2 moves to a second position 81 close to the edge of the crystalline lens nucleus, the suction tube moves by taking the second position as the center, and the nucleus breaking sucking operation is performed for a plurality of times in the moving process;
the focal point of the femtosecond laser generator 2 moves to a third position 82 near the edge of the crystalline lens nucleus, the suction tube moves by taking the third position as the center, and the nucleus breaking sucking operation is performed for a plurality of times in the moving process;
the focal point of the femtosecond laser generator 2 moves to a fourth position 83 near the center of the crystalline lens nucleus, the suction tube moves by taking the fourth position as the center, and the nucleus breaking sucking operation is performed for a plurality of times in the moving process;
the focal point of the femtosecond laser generator 2 moves to a fifth position 84 near the edge of the crystalline lens nucleus, the suction tube moves by taking the fifth position as the center, and the nucleus breaking sucking operation is performed for a plurality of times during the movement;
By adopting the method, the damage caused by ultrasonic energy is avoided without applying ultrasonic energy, the fragments are difficult to clean because the fragments are thoroughly cleaned and cannot be formed in large scale, the adaptability to the lens of the patient in different conditions is good, the complex calculation on the precision of the broken nucleus of the lens of the patient in different conditions is not needed, the improvement on the suction head is very small, and the cost can be controlled in an acceptable range, so that the industrial problem encountered in the current femtosecond laser cataract surgery is solved;
It should be noted that the above five positions may be increased or decreased according to actual needs, and the positions may also be sequentially adjusted;
Preferably, the front end of the inner hole of the suction head 5 is provided with a second reflecting mirror 53, the direction of the first reflecting mirror 51 reflecting the femtosecond laser beam faces the second reflecting mirror 53, and the direction of the second reflecting mirror 53 reflecting the femtosecond laser beam faces the suction gap 52.
Preferably, the first reflecting mirror 51 is in a triangular shape with legs, wherein a right-angle side closes the opening 50, the other right-angle side is close to the second reflecting mirror 53, a reflecting coating is arranged on the inclined side, a suction gap 52 is formed between the lower end part of the first reflecting mirror 51 and the inner wall of the inner hole, the structure is simple, the layout is reasonable, the production cost can be effectively reduced, preferably, the upper surface of the first reflecting mirror is lower than the edge of the opening, the edge of the opening is provided with a conical surface which is convenient to rapidly align with the indication intersection point of the focus indication unit 6, in addition, the suction gap 52 is designed so that the suction force at the suction gap is larger than the suction force at the front end opening of the suction head 5, namely, the main crushed cores and the parts with the effect of fragments are transferred into the suction head, the damage to the eyes is reduced, and preferably, the cutter can be arranged at the lower end part of the first reflecting mirror 51 to assist in physical crushed cores.
Preferably, the focus indication unit comprises a bracket 9 for fixing a plurality of indication beam generators, a manipulator 10 for adjusting deflection and lifting of the bracket is arranged on the support 1, when the femtosecond laser generator 2 moves, the manipulator 10 adjusts deflection and lifting of the bracket 9 to quickly adjust the indication intersection point position of the focus indication unit 6, and the manipulator 10 adopts the prior art and is not repeated.
A method for applying a femtosecond laser cataract surgery instrument to the femtosecond laser cataract surgery instrument as described above, as shown in fig. 4, and referring to fig. 3, the method comprises the following steps:
S01, after the femtosecond laser generator finishes the pre-splitting operation of the crystalline lens, the focus of the femtosecond laser generator moves to a first position close to the edge of the crystalline lens;
S02, extending a suction tube into the cornea through an opening of the cornea, and moving the suction tube by taking the first position as a center, wherein the operation of sucking broken nuclei for a plurality of times is performed in the moving process;
sucking the lens fragments after pre-splitting, moving to a focus position indicated by the opening and focus indicating unit, controlling the operation of the femtosecond laser generator by the control unit, reflecting the emitted laser beam by the first reflecting mirror, and then crushing the lens fragments sucked into the inner hole of the suction head, wherein substances after crushing the cores are sucked away by the suction gap;
s03, moving a focus of the femtosecond laser generator to a second position close to the edge of the crystalline lens nucleus, and moving the suction tube by taking the second position as a center, wherein the nucleus breaking sucking operation is performed for a plurality of times in the moving process;
S04, moving a focus of the femtosecond laser generator to a third position close to the edge of the crystalline lens nucleus, and moving a suction tube by taking the third position as a center, wherein the nucleus breaking sucking operation is performed for a plurality of times in the moving process;
S05, moving a focus of the femtosecond laser generator to a fourth position close to the center of the crystalline lens nucleus, and moving a suction tube by taking the fourth position as the center, wherein the operation of sucking the crushed nucleus is performed for a plurality of times in the moving process;
S06, moving the focus of the femtosecond laser generator to a fifth position close to the edge of the crystalline lens nucleus, and moving the suction tube by taking the fifth position as the center, wherein the nucleus breaking sucking operation is performed for a plurality of times in the moving process.
By adopting the method, the damage caused by ultrasonic energy is avoided without applying ultrasonic energy, the fragments are difficult to clean because the fragments are thoroughly cleaned and cannot be formed in large scale, the adaptability to the lens of the patient in different conditions is good, the complex calculation on the precision of the broken nucleus of the lens of the patient in different conditions is not needed, the improvement on the suction head is very small, and the cost can be controlled in an acceptable range, so that the industrial problem encountered in the current femtosecond laser cataract operation is solved.
It will be understood that modifications and variations will be apparent to those skilled in the art from the foregoing description, and it is intended that all such modifications and variations be included within the scope of the following claims.