Tweezers for taking out foreign matters in eyes

Abstract

The utility model belongs to the intraocular field, and particularly relates to intraocular foreign matter removing forceps which comprise a rod head, a rod body and a plurality of plastic rods. One end of the plastic rod is connected with the rod head, and the other end of the plastic rod is connected with the rod body; the clamping assembly is installed at the top point of the rod head, and the clamping assembly acts on foreign matter clamping; the clamping assembly comprises a clamping rod, and one end of the clamping rod is connected with the rod head. The foreign matter clamp and the clamping rod are used in cooperation, the tweezers are designed to be of a flexible-bending structure, the tweezers can smoothly enter the eye through a small incision and flexibly reach all areas of the eyeball, including the portions difficult to touch by a traditional tool, in addition, the design of the tweezers aims at reducing damage to the sensitive structure in the eye, and the safety of the eyeball is improved. The safety and the efficiency of foreign matter removal are improved, and a safer and more efficient intraocular foreign matter removal solution is provided for intraocular surgery, so that the complication risk of a patient is reduced, and postoperative recovery is accelerated.

Description

Technical Field

[0001] The utility model relates to the field of intraocular foreign body forceps, in particular to intraocular foreign body removal forceps. Background Art

[0002] Intraocular foreign bodies, including metal, glass, and wood chips, are common acute ocular trauma in clinical practice. Once these foreign bodies enter the eye, they can cause a range of complications, including mechanical damage, chemical inflammation, and even infection. In severe cases, they can lead to blindness. Therefore, timely and effective removal of intraocular foreign bodies is crucial for protecting vision and preventing further eye damage.

[0003] Traditional intraocular foreign body removal tools, such as straight tweezers or magnets, have many shortcomings. First, straight tweezers are easily obstructed by the inverted mirror (a special objective lens installed under a microscope for vitrectomy surgery), making it difficult to adjust the tweezers angle and unable to flexibly expand the surgical operating range in a narrow space. They are also inefficient in locating and clamping foreign bodies. Due to their strong rigidity, they are prone to causing secondary damage to intraocular structures, especially when the foreign body is difficult to directly reach. Although magnetic tweezers are effective in removing metal foreign bodies, they are powerless against non-metallic foreign bodies. In addition, there are three existing foreign body removal methods: 1. The three-chamber vitrectomy approach has the disadvantage that the diameter of the approach is less than 1 mm, and it cannot remove slightly larger hard foreign bodies; 2. The scleral approach has the disadvantage that it causes destructive damage to the sclera, the incision is large, and there are many postoperative complications; 3. The limbal approach, although it can reduce damage to the eyeball, has the disadvantage that the angle of the straight foreign body forceps to remove the foreign body is affected by the rearview mirror, and the angle cannot be flexibly adjusted. It cannot reach all positions in the eye at will, especially when the foreign body is deep in the eye or located in sensitive areas such as the retina, the difficulty of removal increases and the risk increases;

[0004] Among open eye injuries, the incidence of intraocular foreign body injuries is 18%-41%. Clinically, intraocular foreign bodies are divided into two categories according to the nature of the foreign body: magnetic foreign bodies and non-magnetic foreign bodies. Non-magnetic foreign bodies include metal foreign bodies (copper, zinc, aluminum, nickel, etc.) and non-metallic foreign bodies. In addition to stones, glass, plastic, slag, and ceramics, non-metallic foreign bodies also include plant foreign bodies (twigs, bamboo thorns, wheat awns, beans, paper scraps, etc.) and animal foreign bodies (eyelashes, insect limbs, hair, etc.). Although the incidence of plant and animal foreign bodies is low, their biological characteristics often cause severe inflammatory reactions. The retention of intraocular foreign bodies causes a series of pathological changes, such as infectious endophthalmitis, iridocyclitis, siderosis, and chalcopyrite, which ultimately lead to visual impairment.

[0005] In order to solve these problems and improve the safety and efficiency of intraocular foreign body removal surgery, it is urgent to develop a new type of intraocular foreign body removal tool; therefore, intraocular foreign body removal forceps are proposed to address the above problems. Utility Model Content

[0006] In order to make up for the shortcomings of the existing technology, this technology aims to solve the problem of entering the eye through a smaller incision, reducing damage to the eyeball structure, and at the same time having better operational flexibility and higher clamping efficiency. The utility model proposes intraocular foreign body removal forceps.

[0007] The technical solution adopted by the utility model to solve the technical problem is as follows: the intraocular foreign body removal forceps of the utility model include a rod head, a rod body and a plurality of plastic rods; one end of the plastic rod is connected to the rod head, and the other end of the plastic rod is connected to the rod body;

[0008] A clamping assembly, the clamping assembly being mounted on the top of the club head and being used to clamp foreign matter;

[0009] The clamping assembly includes a clamping rod, one end of the clamping rod is connected to the rod head, the other end of the clamping rod is slidably provided with a concave plate, the concave portion of the concave plate is equipped with a fixing rod, the surface of the fixing rod is clamped with two bearings, the surface of the bearing outer ring is equipped with a foreign body clamp, and the opposite sides of the two bearing outer rings are equipped with torsion springs, and the other end of the torsion spring is connected to the concave surface of the concave plate;

[0010] A transmission assembly is installed inside the clamping rod and acts on the contraction of the foreign body clamp.

[0011] In order to achieve the transmission effect of controlling the foreign body clamp from the outside, preferably, the transmission assembly includes a connecting line, which passes through the clamping rod, one end of the connecting line is connected to the concave plate, one end of the rod body is equipped with a guide rod, and the other end of the connecting line is connected to the guide rod.

[0012] In order to prevent the foreign body from being detached, preferably, a guide groove is provided in the inner cavity of the clamping rod, a guide block is slidably connected in the guide groove, and the guide block is connected to the concave plate.

[0013] Preferably, section A of the clamping rod is the length for entering the eye, with a specification of 10 mm, and the shape of the clamping rod is designed to be arc-shaped or broken line-shaped / 15 mm / 20 mm / 25 mm / 30 mm, section B of the clamping rod is the length for passing through the corneal limbus, with a specification of 5 mm / 8 mm / 10 mm, and section C of the clamping rod is the length of the clamping rod outside the eye, with a specification of 10 mm, and the shape of the clamping rod is designed to be arc-shaped or broken line-shaped.

[0014] Preferably, the foreign body clamp and the clamping rod are made of high-strength, biocompatible medical stainless steel. The rod body can be made of a metal handle or a plastic handle, and there are several types of grip designs.

[0015] Preferably, common combinations of section A and section B in the clamping rod are 30mm / 5mm, 25mm / 8mm, 20mm / 8mm, and 15mm / 10mm.

[0016] The utility model is beneficial in that:

[0017] 1. The utility model provides a foreign body clamp and a clamping rod for use together. The tweezers are designed with a flexible and bendable structure, which enables them to smoothly enter the eye through a smaller incision and flexibly reach various areas of the eyeball, including those that are difficult to reach with traditional tools. In addition, the design of the tweezers is intended to reduce damage to sensitive intraocular structures and improve the safety and efficiency of foreign body removal. It aims to provide a safer and more efficient intraocular foreign body removal solution for intraocular surgery, thereby reducing the risk of complications for patients and accelerating postoperative recovery. The clamping rod has a smooth corner in the middle. The appropriate degree of curvature and arc enable the tweezers to smoothly pass through the relatively safe corneal limbus incision without using a scleral access or even cutting the sclera. The overall length and bending angle of the tweezers have been precisely calculated to ensure that they can easily reach various parts of the eyeball, especially those areas that are difficult to reach with straight tools.

[0018] 2. The utility model adopts an ergonomic design of the shaft and plastic rod by setting a transmission component, and the grip part is upgraded from the existing traditional tweezers: the tweezers can be clamped in any direction to align, and can be aligned by gently clamping. When aligning, there is a feedback contact on the inside of the handle (the feedback on the hand indicates that the grip has been fully grasped). This design not only improves the stability and accuracy of the operation, but also reduces the hand fatigue caused by long-term operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0020] Figure 1 It is a schematic diagram of the three-dimensional structure of the utility model;

[0021] Figure 2 For the utility model Figure 1 A partial enlarged view of point D in the middle;

[0022] Figure 3 This is a schematic diagram of the structure of the clamping assembly of the utility model;

[0023] Figure 4 This is a top sectional view of the guide groove and guide block of the utility model;

[0024] Figure 5 This is a top sectional view of the club head and the club shaft of the present invention;

[0025] Figure 6 A schematic diagram of the types of shafts of the present invention;

[0026] Figure 7 This is a schematic diagram of the types of plastic rods of the present invention;

[0027] Figure 8 This is a schematic diagram of the types of clamping rods of the present invention.

[0028] In the figure: 1. Rod head; 2. Rod body; 3. Plastic rod; 4. Clamping rod; 5. Concave plate; 6. Fixing rod; 7. Bearing; 8. Foreign object clamp; 9. Torsion spring; 10. Connecting wire; 11. Guide rod; 12. Guide groove; 13. Guide block. DETAILED DESCRIPTION

[0029] The technical solutions in the embodiments of the present invention will be described clearly and completely below with reference to the accompanying drawings in the embodiments of the present invention.

[0030] See also Figure 1-Figure 7 As shown, the intraocular foreign body removal forceps includes a rod head 1, a rod body 2 and a plurality of plastic rods 3; one end of the plastic rod 3 is connected to the rod head 1, and the other end of the plastic rod 3 is connected to the rod body 2;

[0031] A clamping assembly is installed at the top of the club head 1 and is used to clamp foreign objects;

[0032] The clamping assembly includes a clamping rod 4, one end of which is connected to the rod head 1, and the other end of the clamping rod 4 is slidably sleeved with a concave plate 5, the concave portion of the concave plate 5 is clamped with a fixing rod 6, the surface of the fixing rod 6 is clamped with two bearings 7, the surface of the outer ring of the bearing 7 is welded with a foreign body clamp 8, and the opposite sides of the outer rings of the two bearings 7 are respectively attached with a torsion spring 9, and the other end of the torsion spring 9 is attached to the concave surface of the concave plate 5;

[0033] The transmission assembly is installed inside the clamping rod 4 and acts on the contraction of the foreign body clamp 8;

[0034] During operation, by setting up a clamping component and a transmission component, the plastic rod 3 is grasped and transmitted to the foreign body clamp 8 for extension and clamping. The foreign body clamp 8 is designed to be sharp and smooth. The size and shape take into account the type and size of the foreign body to be clamped, ensuring that different types of foreign bodies, such as metal fragments or glass pieces, can be removed efficiently and safely. The tip design of the foreign body clamp 8 avoids sharp edges and reduces the potential risk of damage to sensitive tissues in the eye during operation. The tweezers are designed to be flexible and bendable, so that they can enter the eye smoothly through a smaller incision and flexibly reach various areas of the eyeball, including those that are difficult to reach with traditional tools. In addition, the design of the tweezers is intended to reduce damage to sensitive intraocular structures, improve the safety and efficiency of foreign body removal, and provide a safer and more efficient solution for intraocular foreign body removal for intraocular surgery, thereby reducing the risk of complications for patients and accelerating postoperative recovery. The middle part of the clamping rod 4 has a smooth corner, and the appropriate degree of curvature and curvature enable the tweezers to pass through the relatively safe corneal limbal incision smoothly without using a scleral passage or even cutting the sclera. The overall length and bending angle of the tweezers have been precisely calculated to ensure that it can easily reach various parts of the eyeball, especially those areas that are difficult for straight tools to reach, such as Figure 8 The middle clamping rod 4 can be arc-shaped, which is a specific type of tweezers head for different scene requirements.

[0035] Furthermore, the transmission assembly includes a connecting wire 10, which passes through the clamping rod 4, one end of the connecting wire 10 is connected to the concave plate 5, one end of the rod body 2 is threadedly fixed with a guide rod 11, and the other end of the connecting wire 10 is connected to the guide rod 11;

[0036] When working, by setting a transmission component, the rod body 2 and the plastic rod 3 adopt an ergonomic design, and the gripping part is upgraded on the existing traditional tweezers: the shape of the plastic rod can be arc-shaped and bent, which is convenient for gripping. The tweezers can be aligned by clamping in any direction, and alignment can be achieved by gently clamping. When aligning, there should be a feedback contact on the inside of the handle (the feedback on the hand indicates that the grip has been fully grasped). This design not only improves the stability and accuracy of the operation, but also reduces hand fatigue caused by long-term operation.

[0037] Furthermore, a guide groove 12 is formed in the inner cavity of the clamping rod 4, and a guide block 13 is slidably engaged in the guide groove 12, and the guide block 13 is connected to the concave plate 5;

[0038] During operation, the guide groove 12 and the guide block 13 are used in conjunction with each other to limit the movement of the concave plate 5 and the foreign body clamp 8 and prevent them from separating.

[0039] Furthermore, section A of the clamping rod 4 is the length for entering the eye, with a specification of 10 mm. The shape of the clamping rod is designed to be arc-shaped or broken line-shaped / 15 mm / 20 mm / 25 mm / 30 mm. Section B of the clamping rod 4 is the length for passing through the corneal limbus, with a specification of 5 mm / 8 mm / 10 mm. Section C of the clamping rod 4 is the length of the clamping rod 4 outside the eye, with a specification of 10 mm. The shape of the clamping rod 4 is designed to be arc-shaped or broken line-shaped. Common combinations of sections A and B of the clamping rod 4 are 30 mm / 5 mm, 25 mm / 8 mm, 20 mm / 8 mm, and 15 mm / 10 mm.

[0040] When working, the main design scheme of the clamping rod is arc-shaped with a certain curvature, and the secondary design scheme is a broken line type. The overall design is particularly suitable for the treatment of unconventional foreign bodies entering the eye and the safe removal of foreign bodies larger than 0.9mm in size (the wave-cut surgical channel of 20G is 0.9mm; the wave-cut surgical channel of 23G is 0.65mm; the wave-cut surgical channel of 25G is 0.5mm); and it can cope with various complex and changeable clinical situations.

[0041] Furthermore, the foreign body clamp 8 and the clamping rod 4 are made of high-strength, biocompatible medical stainless steel. The material of the shaft 2 can be divided into a metal handle and a plastic handle, and there are several types of grip designs.

[0042] When working, medical stainless steel is used. This material not only ensures the durability and corrosion resistance of the tweezers, but also ensures safety when used inside the eye. The surface must be matte treated. This is done under a microscope and the surgeon's operation cannot be affected by reflections. According to ergonomics and different needs, the material and shape of the shaft 2 can be changed. Common metal handles and plastic handles, and the gripping method can improve comfort. The foreign body clamp 8 has various types and shapes and can be adjusted according to different needs.

[0043] Working principle: It can enter the corneal limbus through a conventional incision and pass through the corneal limbus incision smoothly without having to enlarge the incision size or use a scleral incision due to the large size of the foreign body; it can flexibly reach various areas of the eyeball, including those that are difficult to reach with traditional tools; the plastic rod 3 can be clamped in any direction to achieve the purpose of alignment, and the plastic rod 3 drives the rod body 2 backward, thereby driving the internal guide rod 11 and connecting wire 10 to move, and the connecting wire 10 drives the concave plate 5 into the clamping rod 4, so that the two foreign body clamps 8 clamp each other. The appropriate bending degree and curvature of the clamping rod 4 enable the tweezers to smoothly pass through the relatively safe corneal limbus incision without having to use a scleral passage or even cut the sclera. The overall length and bending angle of the tweezers have been precisely calculated to ensure that it can easily reach various parts of the eyeball, especially those areas that are difficult to reach with straight tools.

[0044] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions are merely illustrative of the principles of the present invention. Various changes and improvements may be made to the present invention without departing from the spirit and scope of the present invention, and such changes and improvements fall within the scope of the present invention as claimed.

Claims

1. An intraocular foreign body removal forceps, comprising a rod head (1), a rod body (2) and a plurality of plastic rods (3); Features: One end of the plastic rod (3) is connected to the rod head (1), and the other end of the plastic rod (3) is connected to the rod body (2); A clamping assembly, the clamping assembly is mounted on the top of the club head (1), and the clamping assembly acts to clamp foreign matter; The clamping assembly comprises a clamping rod (4), one end of the clamping rod (4) is connected to the rod head (1), the other end of the clamping rod (4) is slidably provided with a concave plate (5), the concave portion of the concave plate (5) is provided with a fixing rod (6), the surface of the fixing rod (6) is clamped with two bearings (7), the surface of the outer ring of the bearing (7) is provided with a foreign body clamp (8), the outer rings of the two bearings (7) are provided with a torsion spring (9) on opposite sides thereof, the other end of the torsion spring (9) is connected to the concave surface of the concave plate (5); A transmission assembly is installed inside the clamping rod (4), and the transmission assembly acts on the contraction of the foreign body clamp (8).

2. The intraocular foreign body removal forceps according to claim 1, Features: The transmission assembly comprises a connecting wire (10), the connecting wire (10) passes through the clamping rod (4), one end of the connecting wire (10) is connected to the concave plate (5), one end of the rod body (2) is provided with a guide rod (11), and the other end of the connecting wire (10) is connected to the guide rod (11).

3. The intraocular foreign body removal forceps according to claim 1, Features: The inner cavity of the clamping rod (4) is provided with a guide groove (12), a guide block (13) is slidably connected in the guide groove (12), and the guide block (13) is connected to the concave plate (5).

4. The intraocular foreign body removal forceps according to claim 1, Features: Section A of the clamping rod (4) is the length entering the eye, with a specification of 10 mm. The shape of the clamping rod is designed to be arc-shaped or broken line-shaped / 15 mm / 20 mm / 25 mm / 30 mm. Section B of the clamping rod (4) is the length passing through the corneal limbus, with a specification of 5 mm / 8 mm / 10 mm. Section C of the clamping rod (4) is the length of the clamping rod (4) outside the eye, with a specification of 10 mm. The shape of the clamping rod (4) is designed to be arc-shaped or broken line-shaped.

5. The intraocular foreign body removal forceps according to claim 1, Features: The foreign body clamp (8) and the clamping rod (4) are made of high-strength medical stainless steel with excellent biocompatibility. The material of the rod body (2) can be divided into a metal handle and a plastic handle, and there are several types of grip designs.

6. The intraocular foreign body removal forceps according to claim 1, Features: Common combinations of section A and section B in the clamping rod (4) are 30mm / 5mm, 25mm / 8mm, 20mm / 8mm, and 15mm / 10mm.

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