CN101273928A - An ophthalmic non-invasive negative pressure fixer - Google Patents

Abstract

The invention discloses an ophthalmic non-invasive negative pressure fixer mainly used for fixing eyeballs, which includes an air bag, a trachea and an adsorption plate, the adsorption plate is a hollow structure, and the surface of the adsorption plate that is in contact with the ocular surface tissue An adsorption hole is provided, and the adsorption hole communicates with the hollow part of the adsorption plate, and the air bag communicates and seals with the adsorption plate through a trachea. When in use, first hold the airbag and squeeze it to the approximate minimum volume, then stick the side of the adsorption plate with the adsorption holes on the ocular surface tissue (such as conjunctiva or sclera, etc.), and then release the airbag at an appropriate speed. Because the adsorption hole on the adsorption plate is blocked, the airbag will form a negative pressure in the inner space of the present invention after returning to its original shape under the action of its own elasticity, and this negative pressure will make the eyeball be adsorbed at a position as close as possible to the adsorption plate to achieve fixation of the eyeball the goal of. When performing eye surgery, using the invention to fix the eyeball is convenient, fast, reliable, painless and non-injury.

Description

An ophthalmic non-invasive negative pressure fixer

technical field

The invention relates to a device mainly used for fixing the eyeball in ophthalmic surgery, in particular to an ophthalmic non-invasive negative pressure fixer which is small in size, easy to operate, painless and non-injury in use, and belongs to the medical device for fixing the eyeball in ophthalmic surgery. The processing field of equipment.

Background technique

Traditional eye surgery fixation instruments are toothed forceps and non-toothed forceps, the former can damage the eye tissue; the latter is usually used for knotting sutures because it cannot fix the eye tissue. With the rapid development of ophthalmic microsurgery, phacoemulsification surgery is becoming more and more mature, transparent corneal incision and folded intraocular lens implantation, the whole operation is performed on the cornea, the avascular area of the eye, so the perfect operation is the eye without blood vessels. Bleeding points, but when performing corneal puncture and capsulorhexis during the operation, it is best to fix the eyeball for safety reasons because of topical anesthesia. At present, doctors still use toothed tweezers when performing ophthalmic surgery, but toothed tweezers are easy to damage the conjunctival blood vessels, causing bleeding, which not only damages the eye tissue, increases the tingling sensation, but also may leave marks on the damaged area after surgery , Affect the beauty of the eyes. Common extracapsular extraction of cataract, pterygium extraction, corneal deep foreign body extraction, etc., all have the above-mentioned problems.

Contents of the invention

The purpose of the present invention is to provide a non-invasive negative pressure fixer for ophthalmology in order to solve the above problems. This fixer utilizes the principle of negative pressure attraction and adopts a device that is easy to generate negative pressure to realize its function. It has good effect and no pain. , No damage, and easy to use, convenient, fast, and easy to carry.

In order to achieve the above object, the present invention adopts the following technical solutions:

The present invention includes an air bag, a trachea and an adsorption plate, the adsorption plate is a hollow structure, and an adsorption hole is arranged on the surface of the adsorption plate for contacting the ocular surface tissue, and the adsorption hole and the hollow part of the adsorption plate In communication, the airbag communicates and seals with the adsorption plate through the trachea.

When using the present invention in ophthalmic surgery, at first hold the air bag with your hand and squeeze it to the approximate minimum volume, then stick the side with the adsorption hole on the adsorption plate to the ocular surface tissue (such as conjunctiva or sclera, etc.), and then Release the airbag at an appropriate speed. Because the adsorption hole on the adsorption plate is blocked, the airbag will form a negative pressure in the inner space of the present invention after returning to its original shape under the action of its own elasticity. This negative pressure will make the eyeball be adsorbed at a position as close as possible to the adsorption plate to fix the eyeball. the goal of. If the adsorption plate straddles the blood vessel (vein), it can also play a role of compression and hemostasis.

According to the actual application situation, as a preferred technical solution of the present invention, the trachea is a hollow handle with relatively high hardness, the air bag is installed at the middle and rear part of the hollow handle, and its connection is an interconnected and sealed connection structure. The rear end of the hollow handle is sealed, and the front end of the hollow handle is communicated and sealed with the adsorption plate. This structure makes the present invention need only one person to hold the handle to complete the task when in use, which is very convenient, and the method of use is as described in the preceding paragraph.

In the specific structure of the above preferred solution, the length of the hollow handle is 6-14 cm, the diameter of its cross-section is 0.3-1 cm, and the width of the adsorption plate is the same as the diameter of the hollow handle. After testing, this structure not only meets the medical requirements, is convenient to use, but also minimizes the product.

The airbag, the hollow handle and the adsorption plate are all made of high-molecular materials that can withstand high-temperature and high-pressure sterilization conditions. The polymer material can be silicone gel, hydrogel, acrylate or polymethyl methacrylate. These materials are materials with both hardness and toughness, suitable for making medical devices.

The hollow handle can also be made of metal materials, and the airbag and the adsorption plate are still made of polymer materials that can withstand high temperature and high pressure sterilization conditions.

As another solution of the present invention, the trachea adopts a hose with less hardness but greater elasticity, and the two ends of the hose are respectively communicated and sealed with the air bag and the adsorption plate. When this structure is in use, it is best to use another bracket to fix the adsorption plate in a suitable position. The advantage is that after the adsorption plate is fixed, it can be left alone, and the trachea can be extended, and the position of the airbag can be moved. It is more convenient to operate at any time; its disadvantage is that the adsorption plate needs to be fixed with a bracket, which is slightly insufficient in the adaptability of the patient's eye position.

Regardless of the technical solution, the elasticity requirement of the airbag should be: after being squeezed and elastically reset, a pressure of 10-21mmHg can be generated. This pressure is similar to the intraocular pressure, does not affect the intraocular structure, and will not cause damage to the eye wall. If necessary, a metal shrapnel can be added in the airbag to enhance the negative pressure, and at the same time reduce the diameter of the airbag for ease of use. According to actual application conditions, the diameter of the airbag is preferably 0.5-3 cm, and the wall thickness is between 0.1-0.5 cm to generate suitable elastic force.

According to the characteristics and shape of the surface of the eye tissue, the adsorption plate has a certain degree of flexibility and is arc-shaped or cylindrical; the adsorption holes of the arc-shaped adsorption plate are located on the concave arc surface, and the adsorption holes of the cylindrical adsorption plate Located on its front end face, its front end face is concave.

It should be noted that the present invention is not suitable for eyeball fixation in myopia surgery (the accuracy of this fixation is too high), and is only suitable for making incisions, suturing or other operations in common eye surgery, and its function is equivalent to toothed tweezers , but non-invasive, especially suitable for modern microsurgery.

The beneficial effects of the present invention are:

When performing ophthalmic surgery, using the present invention to fix the eyeball is convenient, fast, reliable, painless, and non-damaging; no marks are left after the operation, and the appearance of the eye is not affected; if there are veins on the surface of the eye tissue adsorbed by the adsorption plate, The invention also has the function of assisting hemostasis; it can replace the toothed forceps in ophthalmic surgery, which makes patients more willing to accept it, and is conducive to the safe, fast and smooth operation of ophthalmic surgery.

Description of drawings

Fig. 1 is one of the front structural schematic diagrams of the present invention adopting the handle type trachea;

Fig. 2 is the second schematic structural view of the front view of the present invention adopting the handle type trachea;

Fig. 3 is the third schematic diagram of the front view structure of the present invention adopting the handle-type trachea;

Fig. 4 is the fourth schematic view of the front view structure of the present invention using a handle-type trachea;

Fig. 5 is a right view structure schematic diagram of the present invention adopting a handle-type trachea;

Fig. 6 is one of the schematic diagrams of the front view of the present invention adopting a hose-type trachea;

Fig. 7 is the second schematic view of the front structure of the present invention adopting the flexible air pipe.

Detailed ways

Below in conjunction with accompanying drawing, the present invention is described in further detail:

Example 1:

In this embodiment, the present invention adopts a handle-type trachea. As shown in Figures 1 to 4, the present invention includes an airbag 2, a handle 1 and an adsorption plate 3, the adsorption plate 3 is a hollow structure (not shown in the figure), and the adsorption plate 3 is used for contacting with the ocular surface tissue. Adsorption holes 5 are arranged on the surface, and the adsorption holes 5 communicate with the hollow part of the adsorption plate 3 , and the airbag 2 communicates and seals with the adsorption plate 5 through the handle 1 .

In this embodiment, as shown in Figures 1 to 4, the handle 1 is a hollow handle with relatively high hardness, and the airbag 2 is installed at the middle and rear of the handle 1, and its connection is an interconnected sealing connection structure, and the rear end of the handle 1 Sealing, the front end of the handle 1 communicates with the adsorption plate 3 in a sealed connection. This structure makes the present invention need only one person to hold the handle 1 to complete the task when in use, which is very convenient.

As shown in Figures 1-5, the length of the handle 1 is 6-14 cm, the diameter of its cross-section is 0.3-1 cm, and the width of the adsorption plate 3 is the same as the diameter of the handle 1. After testing, this structure not only meets the medical requirements, is convenient to use, but also minimizes the product.

As shown in Figures 1 to 5, the airbag 2, the handle 1 and the adsorption plate 3 in this embodiment can all be made of polymer materials that can withstand high temperature and high pressure sterilization conditions. The polymer material can be silicone gel, hydrogel, acrylate or polymethyl methacrylate. These materials are materials with both hardness and toughness, suitable for making medical devices. In another structure, the handle 1 can also be made of metal materials, and the airbag 2 and the adsorption plate 3 are still made of polymer materials that can withstand high temperature and high pressure sterilization conditions.

As shown in Figures 1 to 5, in order to meet the needs of ophthalmic surgery as much as possible, the elasticity requirements of the airbag 2 should meet the following conditions: after being squeezed and reset by elasticity, a pressure of 10-21mmHg can be generated. This pressure is similar to the intraocular pressure, does not affect the intraocular structure, and will not cause damage to the eye wall. If necessary, a metal shrapnel can be added in the airbag 2 to enhance the negative pressure, while reducing the diameter of the airbag 2 for ease of use. According to actual application conditions, the diameter of the airbag 2 is preferably 0.5-3cm, and the wall thickness is between 0.1-0.5cm, which can generate suitable elastic force.

As shown in Figures 1 to 5, the adsorption plate 3 must have a certain degree of flexibility in view of the characteristics and shape of the surface of the eye tissue. As shown in Figures 1 and 2, the adsorption plate 3 is arc-shaped, and the adsorption hole 5 is located on the concave arc surface of the adsorption plate 3; wherein, there is a gap of about 100° between the adsorption plate 3 and the handle 1 in Figure 1 The included angle between the adsorption plate 3 and the handle 1 in Fig. 2 is a straight line connection, the angle between the adsorption plate 3 and the handle 1 is a straight line connection, and the angle between the above adsorption plate 3 and the handle 1 is determined according to actual needs. As shown in Figures 3 and 4, the adsorption plate 3 is cylindrical, and the adsorption hole 5 is located on the front end surface of the adsorption plate 3, and its front end surface is concave; wherein, between the adsorption plate 3 and the handle 1 in Figure 3 There is an included angle of about 100°. The included angle of 180° between the adsorption plate 3 and the handle 1 in FIG.

As shown in Figures 1 to 4, when using the present invention in ophthalmic surgery, at first hold the air bag 2 with your hands and squeeze it to the approximate minimum volume, then stick the side of the adsorption hole 5 on the adsorption plate 3 ocular surface tissue (such as conjunctiva or sclera, etc.), and then loosen the air bag 2 at an appropriate speed. Because the adsorption hole 5 on the adsorption plate 3 is blocked, the inner space of the present invention will form a negative pressure after the airbag 2 returns to its original shape under the action of its own elasticity. , to achieve the purpose of fixing the eyeball. If the adsorption plate 3 straddles the blood vessel (vein), it can also play a role of compression and hemostasis.

Example 2:

In the present embodiment, the present invention adopts the hose type trachea, as shown in Figure 6 and Figure 7, the present invention comprises air bag 2, flexible pipe 6 and adsorption plate 3, and the two ends of flexible pipe 6 are connected with air bag 2 and adsorption plate 3 respectively Intercommunication and sealing connection; the structure of the air bag 2 and the adsorption plate 3 in this embodiment is the same as that of the air bag 2 and the adsorption plate 3 in the embodiment 1. The hose 6 has less hardness but greater elasticity, and can be moderately bent without affecting its use function. In this embodiment, the process of negative pressure generation is basically the same as that in Embodiment 1, and will not be repeated here. Before use, it is better to use another bracket to fix the adsorption plate 3 in a suitable position. The position can be moved, which is more convenient to operate at any time; the disadvantage is that the adsorption plate 3 needs to be fixed with a bracket, which is slightly insufficient in the adaptability of the patient's eye position.

As shown in FIG. 6 , the adsorption plate 3 is arc-shaped; as shown in FIG. 7 , the adsorption plate 3 is cylindrical. The selection of the above shapes is determined according to actual needs.

It should be noted that the present invention is not suitable for eyeball fixation in myopia surgery (the accuracy of this fixation is too high), and is only suitable for making incisions, suturing or other operations in common eye surgery, and its function is equivalent to toothed tweezers , but non-invasive, especially suitable for modern microsurgery.

The focus of the present invention is to provide a hand-held airbag type ophthalmic non-invasive negative pressure fixer. , or apply the present invention to similar operations other than ophthalmology, then all should be regarded as infringing on the right of the patent of the present invention.

Claims (10)

1, a kind of non-invasive negative-pressure fixer in ophthalmology, it is characterized in that: comprise air bag, trachea and adsorption plate, described adsorption plate is a hollow structure, the surface that is used for contacting with eye table organization on described adsorption plate is provided with adsorption hole, described adsorption hole communicates with the hollow space of described adsorption plate, and described air bag is tightly connected by trachea and adsorption plate intercommunication.

2, non-invasive negative-pressure fixer in ophthalmology according to claim 1, it is characterized in that: described trachea is the bigger hollow handle of hardness, described air bag is installed in the postmedian of described hollow handle, its junction is the intercommunication structure that is tightly connected, the back-end sealing of described hollow handle, the front end of described hollow handle and adsorption plate intercommunication are tightly connected.

3, non-invasive negative-pressure fixer in ophthalmology according to claim 2 is characterized in that: the length of described hollow handle is 6---14cm, and its cross-sectional diameter is 0.3---1cm, the width of described adsorption plate is identical with the diameter of described hollow handle.

4, according to claim 2 or 3 described non-invasive negative-pressure fixer in ophthalmology, it is characterized in that: described air bag, hollow handle and adsorption plate all adopt can withstand high temperatures autoclave sterilization condition the once moulding manufacturing of macromolecular material.

5, non-invasive negative-pressure fixer in ophthalmology according to claim 4 is characterized in that: described macromolecular material is silicon gel, hydrogel, acrylate or polymethyl methacrylate.

6, according to claim 2 or 3 described non-invasive negative-pressure fixer in ophthalmology, it is characterized in that: described hollow handle adopts the metal material manufacturing, described air bag and adsorption plate all adopt can withstand high temperatures autoclave sterilization condition the macromolecular material manufacturing.

7, non-invasive negative-pressure fixer in ophthalmology according to claim 1 is characterized in that: described trachea is that hardness is less but flexible pipe that elasticity is bigger, and the two ends of described flexible pipe are tightly connected with air bag and adsorption plate intercommunication respectively.

8, according to claim 1 or 2 or 7 described non-invasive negative-pressure fixer in ophthalmology, it is characterized in that: the elasticity requirement of described air bag is: in extruding and by behind the elastic reset, can produce 10---the pressure of 21mmHg.

9, non-invasive negative-pressure fixer in ophthalmology according to claim 8 is characterized in that: the diameter of described air bag is 0.5---3cm, wall thickness are 0.1---0.5cm.

10, according to claim 1 or 2 or 3 or 7 described non-invasive negative-pressure fixer in ophthalmology, it is characterized in that: described adsorption plate has certain pliability, is arc or cylindrical; Wherein the adsorption hole of arc adsorption plate is positioned on the indent arcwall face, and the adsorption hole of cylindrical adsorption plate is positioned on its front end face, and its front end face is a concave shaped.

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