CN103705338A - Intraocular foreign body forceps - Google Patents

Abstract

The invention discloses a tweezers for intraocular foreign body, which comprises a handle, a tweezers claw part and an outer casing, the tweezers claw part includes a fixed tube fixedly connected with the handle and a non-magnetic tweezers positioned at the front end of the fixed tube, and the outer casing The tube sleeve is set on the outside of the fixed tube and can be driven to slide back and forth to control the tweezers to close together or to open away from each other. A magnetic component is fixed at the front end of the fixed tube. When the outer tube makes the tweezers close The outer sleeve accommodates the magnetic component therein, and when the outer sleeve slides backwards to open the tweezers, at least the end of the magnetic component is exposed outside the port of the outer sleeve. The invention solves the difficulties in the process of taking out the irregular magnetic foreign bodies in the ball, overcomes the shortcomings of the foreign bodies being unstable and easy to fall off, increases the stability in the process of taking out the foreign bodies, improves the success rate of the operation, reduces the operation time, and reduces the Surgical risks and complications, safe operation.

Description

intraocular foreign body forceps

technical field

The invention relates to the technical field of ophthalmic tools, in particular to forceps for intraocular foreign bodies.

Background technique

Eye trauma, especially eye trauma with intraocular foreign bodies, is one of the important blinding factors in ophthalmology. If it is not handled properly, it will lead to serious consequences such as blindness and eyeball atrophy. With the development of vitrectomy microsurgery, the removal of foreign bodies under a microscope has significantly improved the success rate of removal of intraocular foreign bodies.

Conventional foreign body tweezers consist of a handle and a head, with a total length of about 150mm. The handle has a thumb pressing area or other action structures to control the opening and clamping of the head end of the tweezers; the orientation of the head end can be rotated and adjusted to make it easier to hold foreign bodies in the eye. According to the number of tweezers, it can be divided into two-claw type, three-claw type and four-claw type.

FIG. 1 is a schematic diagram showing the structure of foreign body tweezers in the prior art. As shown in Fig. 1, it is the structure of a kind of ophthalmic surgery internal tweezers disclosed in CN2162939Y, which includes a tubular handle 1, and a sleeve 3 is worn at the opening of the front end of the tubular handle 1, and the sleeve 3 is arranged along the tubular The handle axially slides and inserts with the tubular handle 1, and the sleeve 3 is driven by the operating handle 2 installed on the tubular handle to slide in the tubular handle through the linkage device arranged between the operating handle and the sleeve. The tubular handle 1 is provided with a tweezer claw part, which is composed of a fixed rod extending into the tubular handle and fixedly connected with the tubular handle and two tweezer claws 4 located at the front end of the fixed rod. The tweezers claws 4 are drawn close to each other or opened away from each other. When in use, the sleeve is driven to move toward the direction of the two tweezers, the two tweezers 4 are squeezed together by the sleeve 3, the tweezers are closed to pick up foreign objects, and when the sleeve moves toward the direction of the tubular handle, the two tweezers automatically Detachment, the forceps mouth is opened to release the foreign object or prepare to grasp the foreign object. When not using foreign body tweezers, pull the cannula forward to the position where the two tweezers are completely folded in the cannula, thereby protecting the two tweezers.

At present, the intraocular foreign body tweezers have the following disadvantages: when using the surgical tweezers with the above structure to grab foreign bodies, the diameter of the sclera puncture port for conventional 20G vitrectomy is 1mm, and the existing foreign body tweezers are suitable for irregular intraocular foreign bodies, such as ferromagnetic It is difficult to successfully grasp debris-like foreign bodies at one time, so repeated clamping is required, which may increase the risk of retinal hemorrhage and tears; and the operation time is longer, and the risk of endophthalmitis is greatly increased; in addition, long-term operation is harmful to patients and surgeons. Physical strength is also a test. At the same time, during the foreign body removal process of the existing foreign body tweezers, on the one hand, due to the uneven force on each part of the irregular foreign body, touching the ball wall when leaving the regular scleral incision is very easy to cause the foreign body to fall off again, and the foreign body will cause secondary damage to the retina. On the other hand, even if the foreign body does not fall off, the foreign body will cause scleral damage when passing through the sclera orifice, which may affect the sclera sealing, cause scleral leakage and increase the risk of endophthalmitis.

Contents of the invention

The purpose of the present invention is to provide a kind of intraocular foreign body tweezers which can effectively improve the effect of removing ferromagnetic foreign bodies, aiming at the technical defects existing in the prior art.

The technical scheme adopted for realizing the purpose of the present invention is:

A tweezers for intraocular foreign bodies, comprising a handle, tweezers and an outer sleeve, the tweezers includes a fixed tube fixedly connected to the handle and a non-magnetic tweezers located at the front end of the fixed tube, the outer sleeve is set on the fixed The outer side of the tube can be driven to slide back and forth to control the tweezers to close together or to open away from each other. A magnetic component is fixed at the front end of the fixed tube. When the outer sleeve draws the tweezers, the outer sleeve The tube accommodates the magnetic component therein, and when the outer tube slides backwards and opens the tweezers, at least the end of the magnetic component is exposed outside the port of the outer tube.

Wherein, the connection mode between the magnetic part and the fixed tube can be interference fit, cementation or any other way, the setting position of the magnetic part should not affect the opening and closing of the tweezers, and the distance between the magnetic part and the casing It is advisable that the distance of the port can be exposed or hidden in the casing when the tweezers are opened and closed.

The non-magnetic tweezers are made of carbon material.

The magnetic component is a magnetic post fixedly arranged at the end of the fixed pipe.

The tweezers are three-claw or four-claw.

Compared with prior art, the beneficial effect of the present invention is:

The invention solves the difficulties in the process of taking out the irregular magnetic foreign bodies in the ball, overcomes the shortcomings of foreign bodies being unstable and easy to fall off, increases the stability in the process of taking out the foreign bodies, improves the success rate of the operation, reduces the operation time, and reduces the Surgical risks and complications, safe operation.

Description of drawings

FIG. 1 is a schematic structural view of foreign body tweezers in the prior art;

Figure 2 is a schematic diagram of the structure of the foreign body tweezers in a closed state;

Figure 3 is a schematic diagram of the structure of the foreign body tweezers in the open state;

Figure 4 is an enlarged schematic diagram of part A shown in Figure 2;

FIG. 5 is an enlarged schematic diagram of part B shown in FIG. 3 .

Explanation of reference signs in the figure

1. Tubular handle, 2. Operating handle, 3. Sleeve, 4. Tweezers, 5. Handle, 6. Outer sleeve, 7. Fixed tube, 8. Non-magnetic tweezers, 9. Magnetic parts

Detailed ways

The present invention will be described in further detail below in conjunction with the accompanying drawings and specific embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

As shown in Figures 2-5, the intraocular foreign body tweezers of the present invention include a handle 5, a tweezer claw part and an outer sleeve 6, and the tweezer claw part includes a fixed tube 7 fixedly connected to the handle and a non-magnetic tube located at the front end of the fixed tube. The tweezers 8, the outer sleeve 6 is set on the outside of the fixed tube and can be driven to slide back and forth to control the tweezers to draw close together or open away from each other, and a magnetic part 9 is fixedly arranged at the front end of the fixed tube, preferably The magnetic component described above is a magnetic column or a magnetic block. When the outer sleeve retracts the tweezers, the outer sleeve stores the magnetic component in it. When the outer sleeve slides backwards, the tweezers are opened. At least the end of the magnetic component is exposed outside the casing opening.

Wherein, the handle can be kneaded to control the action of the outer tube, or can be controlled by pressing a button to control the action of the outer tube, etc., and the tweezers can be two-claw, three-claw, four-claw or cup-shaped, etc. Any shape or quantity.

Specifically, the entire foreign body tweezers are divided into a handle and a head end, and the head end is designed as a combination of non-magnetic material and permanent magnetic material. Preferably, the tweezers are made of carbon material, which has high safety and stability , and a magnetic component is set at the end of the fixed tube at the root of the tweezers. Close the tweezers and enter the inside of the eyeball. When it needs to be pinched, control the outer tube to move backwards to open the tweezers. At this time, the magnetic part moves forward relative to the outer tube and extends out of the mouth of the outer tube to generate magnetic foreign objects. Magnetic adsorption force, when the tweezers are close to the foreign object, the magnetic part absorbs the foreign object. At this time, the outer sleeve is controlled to move forward so that the tweezers close and bite the foreign object. At the same time, the magnetic part moves backward relative to the outer sleeve and retracts into the outer sleeve. Smaller than the outer sleeve size, it is sucked into the outer sleeve. There is no risk of foreign bodies being dislodged when the forceps exit the wound. If the volume of the foreign object is larger than the diameter of the outer tube, it is difficult for the foreign object to fall off when the tweezers withdraw from the wound due to the magnetic attraction and the occlusion of the tweezers. It is convenient, reliable, safe and successful to remove magnetic foreign bodies of any shape in the eye.

The above is only a preferred embodiment of the present invention, it should be pointed out that, for those of ordinary skill in the art, without departing from the principle of the present invention, some improvements and modifications can also be made, these improvements and Retouching should also be regarded as the protection scope of the present invention.

Claims (4)

1. A foreign body tweezers in the eye, characterized in that: comprise a handle, a tweezer claw portion and an outer sleeve, the tweezer claw portion includes a fixed tube fixedly connected to the handle and a non-magnetic tweezer claw positioned at the front end of the fixed tube, the The outer sleeve is set on the outside of the fixed tube and can be driven to slide back and forth to control the tweezers to draw closer or to open away from each other. A magnetic part is fixed at the front end of the fixed tube. When the outer sleeve makes the tweezers When the outer sleeve is folded, the magnetic component is stored in it, and when the outer sleeve slides backwards and the tweezers are opened, at least the end of the magnetic component is exposed outside the port of the outer sleeve. 2. The tweezers for intraocular foreign bodies according to claim 1, wherein the non-magnetic tweezers are made of carbon material. 3. The intraocular foreign body tweezers according to claim 1 or 2, wherein the magnetic component is a magnetic column or a magnetic block fixedly arranged at the end of the fixing tube. 4. The intraocular foreign body tweezers according to claim 1 or 2, characterized in that: the tweezers claws are three-claw type or four-claw type.

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