WO2011154971A1

WO2011154971A1 - Phaco visco elastic surgical implement assembly

Info

Publication number: WO2011154971A1
Application number: PCT/IN2011/000144
Authority: WO
Inventors: Ram Srikanth Mirlay
Original assignee: Ram Srikanth Mirlay
Priority date: 2010-06-10
Filing date: 2011-03-07
Publication date: 2011-12-15

Abstract

The embodiments herein provide a phaco visco surgical implement(101) comprising a phaco hand piece(102) with at least a syringe(103) disposed on it wherein the syringe(103) is operatively coupled with the hand piece(102) and communicates through an aperture into the infusion passage of the hand piece(102). The syringe(103) carrying a visco elastic material, which when operated by a surgeon provided the visco elastic material simultaneously into an eye of a subject through an infusion exit of the phaco hand piece(l 02) while performing a phaco emulsification surgeon and reducing the time and interruptions in the surgery.

Description

The Patents Act 1970

(39 of 1970)

&

The Patent Rules 2003

COMPLETE SPECIFICATION

(See Section 10 and rule 13)

TITLE OF THE INVENTION:

PHACO VISCO ELASTIC SURGICAL IMPLEMENT ASSEMBLY

APPLICANT:

RAM SRIKANTH MIRLAY

220 A, BELLARY ROAD, SADASHIV NAGAR,

BANGALORE - 560080, KARNATAKA

PREAMBLE OF THE DESCRIPTION:

THE FOLLOWING SPECIFICATION PARTICULARLY DESCRIBES THE INVENTION AND THE MANNER IN WHICH IT IS TO BE PERFORMED BACKGROUND

Technical field

[0001] The embodiments herein generally relate to the field of cataract surgery in mammals using phaco emulsification method and particularly to phaco visco hand pieces used in surgery. The embodiments herein more particularly relate to a phaco visco hand piece with a syringe system for providing Ocular Visco Elastic device (OVD) during the phaco emulsification procedure.

Description of the Related Art

[0002] Mammalian cataract surgery is performed using an instrument system called the phaco emulsification machine. The machine consists of a hand piece which is held by the surgeon in his hands and the phaco needle tip is introduced into the eye of the mammals to emulsify and suck out/aspirate the cataract. Phaco piezo crystal is located inside a phaco hand piece. When an electrical current is applied to the crystal, the crystal vibrates in a to and fro motion and produces ultrasonic vibrations that further helps to emulsify and dissolve the cataract into pieces. The vibrations are around 38000 per minute. The surgeon makes a very small incision using a phaco needle in the white of an eye near the outer edge of the cornea. The incision is about l/8th of an inch. A small ultrasonic probe or phaco needle is inserted through this opening and oscillations at the rate of 40,000 cycles per minute are utilized to emulsify and break up the cataract into tiny pieces. The emulsified material is simultaneously suctioned from the eye by an open tip of the phaco needle. During this process, the ultrasonic vibrations from the probe reach the endothelial tissue of the cornea and produce a harm or damage to the tissue. To minimize this, surgeons inject a "shock absorbing" material into the eye. It is known as "Ocular Visco Elastic Device" or "OVD". The injection of OVD is done by an injection syringe separately.

[0003] Visco elastic agents were introduced in the ophthalmic surgery in the year 1972 and have greatly expanded the options available to the ophthalmic surgeons by protecting the tissue surfaces from mechanical damage, maintaining an anterior chamber depth and assisting in homeostasis. Since then, many materials with varying physical and biochemical properties have become commercially available. Some of these agents include Healon (1% sodium hyaluronate), Healon GV (1.4% sodium hyaluronate), Healon 5 (2.3% sodium hyaluronate), Viscoat (3% sodium hyaluronate/4% Chondroitin sulfate), and OcuCoat (2% hydroxyl propyl methylcellulose).

[0004] The OVD is introduced into the eye as a separate step, after the surgical incision is made. To inject the OVD, the surgeon needs to cease his surgery and to remove the phaco needle from the eye. Then he has to inject the OVD. After the injection of OVD, the phaco instrument is reintroduced into the eye to activate the phaco needle tip to continue the surgery. This causes interruptions and delays thereby increasing the surgical time. Thus the present system of injecting the OVD interrupts the surgery thereby delaying the surgical procedure and increases the surgical time.

[0005] Hence there is a need for a phaco emulsification · hand piece to provide an uninterrupted surgery and to reduce the surgical time by eliminating the unwanted delays in the surgical process.

[0006] The above ^' mentioned shortcomings, disadvantages and problems are addressed herein and which will be understood by reading and studying the following specification.

OBJECTIVES OF THE EMBODIMENTS

[0007] The primary object of . the embodiments herein is to provide a phaco emulsification hand piece attached with an syringe system for injecting OVD continuously without interrupting the surgical process.

[0008] Another object of the embodiments herein is to provide a phaco emulsification hand piece with an integrated syringe system for introducing OVD continuously during the surgery without any delay. [0009] Yet another object of the embodiments herein is to provide a phaco emulsification hand piece with an integrated syringe system for providing several medications into the eye during the surgery without removing the phaco visco hand piece.

[OOlO] Yet another object of the embodiments herein is to provide a phaco emulsification hand piece provided with an integrated syringe system which is operated with electrical and pneumatic mechanism for introducing OVD, dye and medications continuously during the surgery without any delay.

[0011] Yet another object of the embodiments herein is to provide a phaco emulsification hand piece with an integrated syringe system provided with an interchangeable cartridge for introducing OVD, dye and medication, and any other material' required, continuously during the surgery without any delay.

[0012] These and other objects and advantages of the embodiments herein will become readily apparent from the following detailed description taken in conjunction with the accompanying drawings.

SUMMARY

[0013] According to an embodiment herein, the phaco visco surgical implement comprises a phaco hand piece and at least a syringe. The syringe is disposed on the phaco hand piece. The syringe is operatively coupled with the phaco hand piece through a syringe fixation slot and opens into an infusion passage of the phaco hand piece. The syringe consists of a tank and an injection mechanism. The tank is filled with a fluid. The fluid is selected from a group comprising of an OVD, a medicament and a dye and combination thereof. The injection mechanism is selected from a group comprising of a plunger, a piston, a compressible plastic, a sliding barrier, an electrical or _. pneumatic arrangement, a phaco machine control panel, a foot paddle, buttons and a combination thereof. The syringe consists of at least a cartridge filled with the fluid. The cartridge is interchangeable. The syringe is made up of a disposable material. The syringe consists of a multi-cartridge loader. The syringe is ergonomic and wherein the syringe consists of a cross sectional shape of a circle, cornea and triangle. The syringe is located outside the phaco hand piece. The syringe is located inside a phaco hand piece. The syringe is located partly out and partly in the phaco hand piece. The tank is located in a phaco machine. The syringe provides the fluid inside an eye of a subject while performing a phaco emulsification surgery simultaneously while performing the phaco emulsification surgery.

[0014] The embodiments herein provide a phaco visco surgical implement comprising a phaco hand piece and at least a syringe disposed on the phaco hand piece. The syringe is operatively coupled with the phaco hand piece through an aperture. The aperture opens into an infusion passage of the phaco visco hand piece. The syringe provides a visco elastic material simultaneously through the infusion passage of the phaco hand piece into an eye of a subject while performing a phacoemulsification surgery. The syringe consists of a tank and an injection mechanism. The tank is filled with an OVD. The injection mechanism provides the OVD in the eye of the subject when operated by a surgeon. The tank is filled with a dye. The tank is filled with a medicament. The injection mechanism is selected from a group comprising of a plunger, a piston, a compressible plastic, a sliding barrier, and a combination thereof. The syringe consists of at least a cartridge. The cartridge is filled with a visco elastic material or a dye or a medicament. The cartridge is interchangeable. The syringe is made up of a disposable material. The syringe is ergonomic. The syringe consists of a cross section in a shape of circular, corneal, triangular, or any other shape.

[0015] According to one embodiment herein, the phaco visco surgical implement comprises an attached or integrated syringe system for introducing a visco elastic material, dye, medication and any other material, into the eye during a surgery. The syringe system has a tank filled with OVD or dye or medication. The syringe system opens internally into the irrigation stream of the hand piece. The hand piece is provided with a plunger or piston or a compressible plastic device which when operated or pushed or pressed by the surgeon, injects OVD, or dye or medication into the eye through an irrigation system or infusion system of the hand piece, respectively.

[0016] According to one embodiment herein, the syringe system has a single cartridge to hold OVD or dye or medication. According to one embodiment of the present invention, the syringe system is loaded with interchangeable cartridges filled with OVD, dye and medicament respectively. According to another embodiment of the present invention, the syringe is loaded with pluralities of cartridges to permit the injection of OVD, dye and medication.

[0017] The syringe attachment communicates through an aperture in the phaco hand piece. The cross sectional shape of the syringe is circular, (ordinary) or corneal triangular, or any other shape. The syringe is a metallic syringe and constructed with the material which is same as the body or housing of the phaco visco hand piece.

[0018] According to one embodiment herein, the syringe is made up of plastic and optionally disposable material. So a new, preloaded OVD syringe is attached or loaded on to the phaco hand piece for each new case.

[0019] The injection mechanism is a piston (as in all syringes) or sliding barrier which is easier for single handed use or pliable plastic elastic combination material (such as Collapsible syringe) that is when squeezed by the surgeon finger, pushes ester OVD into the phaco infusion stream.

[0020] According one embodiment herein, one or more such syringes are attached to the hand piece to permit two or more medications such as OVD, Trypan blue Dye, drugs, etc., to be injected into the eye, without interrupting the surgery.

[0021] The syringe system communicates with the infusion stream of the phaco hand piece through an aperture called OVD syringe fixation slot. The syringe has plunger or piston or it is made up of plastic or any other collapsible material, which when squeezed will provide the material into the eye. According to one embodiment herein, the surgeon simply presses the plunger or piston or squeezes the syringe to force the OVD through the OVD/infusion exit.

[0022] According to one embodiment herein, the syringe is ergonomic and triangular in shape. According to another embodiment of the present invention, the syringe is circular (normal) in shape. The syringe is. filled with different desired fluids, like dye or medicament, other than OVD.

[0023] These and other aspects of the embodiments herein will be better appreciated and understood when considered in conjunction with the following description and the accompanying drawings. It should be understood, however, that the following descriptions, while indicating preferred embodiments and numerous specific details thereof, are given by way of illustration and not of limitation. Many changes and modifications may be made within the scope of the embodiments herein without departing from the spirit thereof, and the embodiments herein include all such modifications.

BRIEF DESCRIPTION OF THE DRAWINGS

[0024] The other objects, features and advantages will occur to those skilled in the art from the following description of the preferred embodiment and the accompanying drawings in which:

[0025] FIG. 1 shows a side view of the Phaco Visco surgical implement according to one embodiment herein.

[0026] FIG. 2 shows a cross sectional view of the Phaco Visco surgical implement, according to one embodiment herein. [0027] FIG. 3 shows a cross-sectional view of the Phaco Visco surgical implement showing a circular syringe, according to one embodiment herein.

[0028] FIG. 4 shows a cross sectional view of the phaco visco surgical implement with multiple syringes, according to an embodiment herein.

[0029] These and other aspects of the embodiments herein will be better appreciated and understood when considered in conjunction with the following description and the accompanying drawings. It should be understood, however, that the following descriptions, while indicating preferred embodiments and numerous specific details thereof, are given by way of illustration and not of limitation. Many changes and modifications may be made within the scope of the embodiments herein without departing from the spirit thereof, and the embodiments herein include all such modifications.

DETAILED DESCRIPTION OF THE EMBODIMENTS

[0030] In the following detailed description, a reference is made to the accompanying drawings that form a part hereof, and in which the specific embodiments that may be practiced is shown by way of illustration. The embodiments are described in sufficient detail to enable those skilled in the art to practice the embodiments and it is to be understood that the logical, mechanical and other changes may be made without departing from the, scope of the embodiments. The following detailed description is therefore not to be taken in a limiting sense.

[0031] FIG. 1 shows a side view of the Phaco Visco surgical implement according to one embodiment herein. With respect to FIG. 1, the phaco visco surgical implement 101 comprises a phaco hand piece 102 and a syringe 103 attached on phaco visco hand piece 102. Phaco hand piece 102 comprises a phaco needle 109 and an aspiration passage 110 to suck in the emulsified cataract. Syringe 103 is formed of a tank 104 and a plunger 105. The tank 104 is filled with an OVD to inject into an eye. The syringe 103 opens internally into the irrigation or infusion stream 106 of the phaco visco hand piece 102 through a syringe fixation slot 107. The plunger 105 when pressed by the surgeon pushes the OVD into the infusion stream 106 and further passes the OVD in the eye via infusion stream 106 through an infusion exit 108. Phaco visco hand piece 102 has a peizo electric crystal 111 and related components for producing ultrasonic vibrations. Peizo electric crystal 111 produces ultrasonic vibrations that emulsify the cataract.

[0032] FIG. 2 shows a cross sectional ^"view of the Phaco Visco surgical implement, according to one embodiment herein. With respect to FIG.2, syringe 103 is attached on the phaco visco hand piece 102. Syringe 103 is connected to the infusion stream 106 of the phaco visco hand piece 102. The cataract is sucked in through an aspiration aperture 202 after being emulsified by phaco needle 109. The OVD from the syringe 103 is expelled out from the infusion exit 108. The syringe 103 is triangular and ergonomic.

[0033] FIG. 3 shows a cross-sectional view of the Phaco Visco surgical implement showing a circular syringe, according to one embodiment of the present invention. With respect to FIG.3, the circular syringe 301 is disposed on the phaco hand piece 102 and connected to the infusion stream 106 of the phaco hand piece 102. The OVD comes out via infusion exit 108. 202 is a suction aperture of the phaco needle 109 to suck in the cataract.

[0034] FIG. 4 shows a cross sectional view of the phaco visco surgical implement with multiple syringes, according to an embodiment herein. With respect to FIG. 4, the phaco hand piece 102 has three syringes 103, 401 and 402 disposed over and connected to the infusion stream of the phaco hand piece 102 via slot 107, 403 and 404 respectively. The syringe 103 is filled with OVD and provides OVD inside the eye. The syringe 401 is filled with a medicament and provides the medicament into the eye. The syringe 402 is filled with a dye and provides the dye into the eye when operated by the surgeon. The medicament is selected from a group comprising of steroids, ophthalmic solutions, antibiotics, nutrients, anticancer drugs, radioactive isotope and combination thereof. The dye is selected from a group comprising of trypan blue (ophthalmic grade), flurescine, indocyanine green or similar and combination thereof. [0035] According to one embodiment herein, the hand piece is provided with a plunger or piston or a compressible plastic device that is when mechanically operated or pushed or pressed by the surgeon, injects OVD-, or dye or medicament from the syringe into the eye through an irrigation system or infusion system of the hand piece.

[0036] According to one embodiment herein, the syringe system is located outside the phaco hand piece. According to one embodiment of the present invention, the syringe system is located or fully installed inside the phaco hand piece. According to one embodiment herein, the syringe system is partially located outside and partially located inside of a phaco hand piece. According to one embodiment herein, the tank of the syringe system is located in the main phaco machine and the release of contents of the tank is controlled from the phaco machine control panel and operated by an assistant surgeon when instructed by a surgeon while performing a surgery. The syringe is attached to the phaco hand piece with a long and thin tube to provide the OVD inside an eye. The tube is connected to the infusion stream of the phaco hand piece. According to one embodiment herein, the release of the content of the syringe is controlled by buttons placed over the phaco hand piece. According to one embodiment herein, the syringe system is controlled by a foot paddle control operated by the feet of the surgeon.

[0037] According to one embodiment herein, a phaco visco surgical implement integrated with a syringe system for introducing a Visco elastic material, dye and medication into the eye during a phaco emulsification surgery. The syringe system comprises a tank to be filled with OVD or dye or medication. The syringe system opens internally into the irrigation stream of the hand piece. The hand piece is provided with a plunger or piston or a compressible plastic device that when operated/pushed/pressed by the surgeon, injects OVD, or dye or medication into the eye through an irrigation system or infusion system of the hand piece. [0038] According to one embodiment herein, the syringe system has a single cartridge to hold OVD or dye or medication. According to one embodiment of the present invention, the syringe system is loaded with interchangeable cartridges filled with OVD, dye and medication respectively. According to one embodiment of the present invention, the syringe is loaded with pluralities of cartridges to permit the injection of OVD, dye and medication.

[0039] The syringe attachment communicates through an aperture in the phaco hand piece. The cross sectional shape of the syringe is circular, (ordinary) or corneal triangular, or any other shape. The syringe is a metallic syringe and constructed with the material that is same as the body or housing of the phaco visco hand piece.

[0040] According to one embodiment herein, the syringe is made up of plastic and optionally disposable material. So a new, preloaded OVD syringe is attached/ loaded on to the phaco hand piece for each new case.

[0041] The injection mechanism is a piston (as in all syringes) or sliding barrier which is easier for single handed use or pliable plastic elastic combination material (such as Collapsible syringe) which when squeezed by the surgeon finger, pushes ester OVD into the phaco infusion stream.

[0042] According to one embodiment herein, one or more such syringes are attached to the hand piece to permit two or more medications such as OVD, Trypan blue Dye, drugs, etc., to be injected into the eye, without interrupting the surgery.

[0043] According to one embodiment herein, a phaco hand piece with an attached syringe system or integrated within the hand piece to introduce the Visco elastic material inside the eye during surgery is provided. While performing surgery, the^' surgeon may simultaneously inject the OVD into the eye without taking breaks. This will reduce the surgery time, and chances of infection. [0044] An OVD syringe is attached to a phaco hand piece, which communicates with the irrigation/infusion stream through an aperture called OVD syringe fixation slot. The syringe has piston/plunger which when pressed by the surgeon, will ejaculate the OVD into the eye from OVD/irifusion exit.

[0045] The syringe system may be filed from the exterior. The syringe can be filled with different desired fluids, like dye or medicament, other than OVD.

[0046] The syringe system is made up of metal, plastic, any disposable material, or of same material as phaco hand piece. If it is disposable, then a new syringe may be loaded or attached in the phaco hand piece.

[0047] The injection mechanism is provided with a piston (as in all syringes), with sliding barriers easier for single handed use, or pliable plastic elastic combination, or collapsible syringe which when squeezed by the surgeon's finger, push the material into the phaco infusion stream.

[0048] According to one embodiment herein, one or more such syringes may be attached to the hand piece. This would permit two or more medications to be injected into the eye, without interrupting the surgery. For example, OVD with Trypan Blue dye and drugs, or various other combinations. The syringe may have different shapes for example, triangular and circular (as shown in FIG. 2 and 3), or any other suitable shape.

[0049] Various interchangeable cartridges may be inserted in a housing provided on the phaco hand piece for injecting the desired fluids during the surgery. Electrical or pneumatic mechanisms can also be used to inject the desired fluids. Multi cartridge loader can also be attached to the phaco hand piece to permit OVD, dye, or medicine. [0050] The phaco emulsification hand piece provides an uninterrupted surgery and reduces the surgical time by eliminating the unwanted delays in the surgical process by simultaneously injecting the OVD required during a cataract surgery.

[0051] The foregoing description of the specific embodiments will so fully reveal the general nature of the embodiments herein that others can, by applying current knowledge, readily modify and/or adapt for various applications such specific embodiments without departing from the generic concept, and, therefore, such adaptations and modifications ' should and are intended to be comprehended within the meaning and range of equivalents of the disclosed embodiments. Therefore, while the embodiments herein have been described in terms of preferred embodiments, those skilled in the art will recognize that, the embodiments herein can be practiced with modification within the spirit and scope of the appended claims.

[0052] Although the embodiments herein are described with various specific embodiments, it will be obvious for a person skilled in the art to practice the invention with modifications. However, all such modifications are deemed to be within the scope of the claims. It is also to be understood that the following claims are intended to cover all of the generic and specific features of the embodiments described herein and all the statements of the scope of the embodiments which as a matter of language might be said to fall there between.

Claims

claimed is:

A phaco visco surgical implement assembly comprising:

a phaco hand piece;

a surgical unit provided in the phaco hand piece; and.

at least one syringe;

wherein the atleast one syringe is disposed on the phaco hand piece and the atleast one syring is filled with OVD to supply the OVD continuously during a surgical process without removing a surgical unit .

The assembly according to claim 1, wherein the atleast one syringe is operatively coupled with the phaco hand piece through a syringe fixation slot and opens into an infusion passage of the phaco hand piece.

The assembly according to claim 1, wherein the atleast one syringe consists of a tank and an injection mechanism.

The assembly according to claim 4, wherein the tank is filled with a fluid.

The assembly according to claim 5, wherein the fluid is selected from a group comprising of an OVD, a medicament and a dye and combination thereof.

The assembly according to claim 4, wherein the injection mechanism is selected from a group comprising of a plunger, a piston, a compressible plastic and a sliding barrier.

The assembly according to claim 1 , further comprises an electrical or mechanical or electronic means for operating the injection mechanism.

The assembly according to claim 1 , wherein the mechanical means is a foot operated paddle.

The assembly according to claim 1 , wherein the atleast one syringe includes at least one cartridge filled with a fluid.

The assembly according to claim 8, wherein the cartridge is interchangeable.

The assembly according to claim 1, wherein the syringe is made up of a disposable material.

The assembly according to claim 1 , wherein the syringe consists of a multi-cartridge loader.

13. The assembly according to claim 1 , wherein the syringe is ergonomic and wherein the syringe consists of a cross sectional shape of a circle, cornea and triangle.

14. The assembly according to claim 1 , wherein the syringe is located outside the phaco hand piece.

15. The assembly according to claim 1, wherein the syringe is located inside a phaco hand piece.

16. The assembly according to claim 1, wherein the syringe is located partly out and partly in the phaco hand piece.

17. The assembly according to claim 1, wherein a storage tank filled with a fluid is located outside the phaco hand piece.

18. The assembly according to claim 1 , wherein the atleast one syringe provides the fluid inside an eye of a subject while performing a phaco emulsification surgery simultaneously