Stable intraocular foreign matter taking-out device

Abstract

The invention discloses a stable intraocular foreign matter taking-out device which comprises a grip, a sleeve and a negative pressure pipe. A sleeve is arranged in the grip in a sleeving manner; a negative pressure pipe is arranged in the sleeve in a sleeving manner; the rear end of the negative pressure tube is fixedly connected with the grip; one side of the front end of the sleeve is fixedly connected with one end of the memory wire, and one side of the sleeve is provided with a ring groove slidably connected with the slider; the lower end of the sliding block is fixedly connected with the control ring; one side of the control ring is fixedly connected with a memory wire, a groove is formed in the control ring, the surface of the inner ring is slidably connected with an outer gear, and the surface of the outer ring is slidably connected with an inner gear; memory wires are arranged at the top ends of the inner gear and the outer gear respectively, and control gears are arranged at the joints of the inner gear and the outer gear for meshing; the memory wires on the two sides wrap the foreign matter from different directions, the foreign matter is effectively prevented from falling off in the taking-out process, and the foreign matter clamping stability is greatly improved.

Description

Technical Field

[0001] The invention belongs to the technical field of medical devices, and in particular relates to a stable intraocular foreign body removal device. Background Art

[0002] Foreign bodies in the eye are a serious ophthalmic disease. Once foreign bodies enter the eye, they may directly damage important eye structures such as the cornea, lens, and retina, leading to a series of problems such as decreased vision, eye pain, and infection. If they are not removed in time, foreign bodies may also cause intraocular inflammatory reactions, such as uveitis and endophthalmitis, further aggravating eye damage and even causing blindness. Traditional surgical methods, such as simple tweezers or the use of magnetic principles to remove magnetic foreign bodies, have certain limitations. During the operation, due to the delicate and complex structure of the eye and the limited surgical field of view, it is difficult for doctors to accurately locate and grasp foreign bodies, which can easily cause secondary damage to surrounding tissues.

[0003] In the prior art, when facing large foreign bodies, especially non-magnetic and irregular foreign bodies, a self-made snare ring made of sutures is usually used to clamp large non-magnetic foreign bodies; however, this clamping method has certain limitations. Since the shape of foreign bodies is usually irregular and it is difficult to clamp foreign bodies due to adhesion to the vitreous body, they are easy to slip during clamping, thereby causing secondary damage to the patient and affecting the foreign body removal effect;

[0004] Therefore, in response to the above-mentioned problems of the prior art, the present invention proposes a stable intraocular foreign body removal device to enhance the stability of foreign body clamping and improve the foreign body removal effect. Summary of the invention

[0005] In order to solve the above technical problems, the present invention designs a stable intraocular foreign body removal device, which respectively arranges three memory wires at the front end of the cannula, and after the intraocular foreign body is removed, the internal control gear is driven to rotate by rotating the rear end knob, so that the outer gear and the inner gear at both ends rotate toward the two ends respectively, so that the memory wires on both sides wrap the foreign body from different directions respectively, preventing the foreign body from falling during the removal process; at the same time, a negative pressure tube is arranged inside the cannula, and a suction cup is arranged at the front end of the negative pressure tube, so that after the foreign body is clamped, the memory wire is assisted to absorb and fix the foreign body, thereby improving the stability of clamping the foreign body;

[0006] In order to achieve the above technical effects, the present invention is implemented by the following technical solutions: a stable intraocular foreign body removal device, comprising: a grip, a cannula, and a negative pressure tube;

[0007] A sleeve is sleeved inside the handle; a negative pressure tube is sleeved inside the sleeve; the rear end of the negative pressure tube is fixedly connected to the handle;

[0008] One end of the memory wire is fixedly connected to one side of the front end of the sleeve, and a ring groove is provided on one side of the sleeve to be slidably connected to the slider; a push block is provided on the upper end of the slider, and the lower end is fixedly connected to the control ring; one side of the control ring is fixedly connected to a memory wire, a groove is provided inside the control ring, the inner ring surface is slidably connected to the outer gear, and the outer ring surface is slidably connected to the inner gear; memory wires are respectively provided at the top of the inner gear and the outer gear, and a control gear is provided at the connection between the two to mesh;

[0009] Further, a gear is arranged on the concave surface of the inner gear;

[0010] Further, a gear is arranged on the convex surface of the external gear;

[0011] Furthermore, a control rod is provided at the lower end of the control gear and penetrates through the end of the handle to be fixedly connected to a knob;

[0012] Furthermore, the front ends of the three memory wires are merged together and fixedly connected to the front end of the sleeve;

[0013] Furthermore, the circular groove penetrates the handle; a push-pull slide groove is provided at the circular groove on the handle to slidably connect the push block;

[0014] Furthermore, a suction cup is provided at the front end of the negative pressure tube, and a negative pressure device is provided at the rear end to be fixedly connected to the handle.

[0015] The beneficial effects of the present invention are:

[0016] The present invention arranges three memory wires at the front end of the sleeve. After the foreign object is taken out, the rear end knob is rotated to drive the internal control gear to rotate, so that the outer gear and the inner gear at both ends rotate toward the two ends respectively. The memory wires on both sides wrap the foreign object from different directions, effectively preventing the foreign object from falling during the removal process, and greatly improving the stability of clamping the foreign object.

[0017] At the same time, a negative pressure tube is set inside the sleeve, and a suction cup is set at the front end of the negative pressure tube. After clamping the foreign object, the suction cup assists the memory wire to adsorb and fix the foreign object, further enhancing the fixing effect. The double guarantee improves the stability of clamping the foreign object and reduces the risk of the foreign object slipping. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for describing the embodiments are briefly introduced below.

[0019] Figure 1 It is a schematic diagram of the overall structure of a stable intraocular foreign body removal device;

[0020] Figure 2 It is a top cross-sectional view of a stable intraocular foreign body removal device;

[0021] Figure 3 It is a frontal cross-sectional view of a stable intraocular foreign body removal device;

[0022] Figure 4 It is a schematic diagram of the internal structure of a stable intraocular foreign body removal device;

[0023] Figure 5 A is a partial structural schematic diagram of a stable intraocular foreign body removal device;

[0024] In the accompanying drawings, the components represented by the reference numerals are listed as follows:

[0025] 1-handle, 2-push-pull slide, 3-ring groove, 4-push block, 5-sleeve, 6-negative pressure tube, 7-suction cup, 8-slider, 9-control ring, 10-inner gear, 11-outer gear, 12-control gear, 13-control rod, 14-memory wire, 15-negative pressure device, 16-knob. DETAILED DESCRIPTION

[0026] The present invention discloses a stable intraocular foreign body removal device, comprising: a handle 1, a sleeve 5, and a negative pressure tube 6; the sleeve 5 is sleeved inside the handle 1; the negative pressure tube 6 is sleeved inside the sleeve 5; the rear end of the negative pressure tube 6 is fixedly connected to the handle 1; one side of the front end of the sleeve 5 is fixedly connected to one end of a memory wire 14, and a ring groove 3 is provided on one side of the sleeve 5 to be slidably connected to a slider 8; a push block 4 is provided on the upper end of the slider 8, and a control ring 9 is fixedly connected to the lower end; a memory wire 14 is fixedly connected to one side of the control ring 9, a groove is provided inside the control ring 9, the inner ring surface is slidably connected to an outer gear 11, and the outer ring surface is slidably connected to an inner gear 10; memory wires 14 are respectively provided at the top ends of the inner gear 10 and the outer gear 11, and a control gear 12 is provided at the connection between the two to mesh; the memory wires 14 on both sides wrap the foreign body from different directions, effectively preventing the foreign body from falling during the removal process, and greatly improving the stability of clamping the foreign body.

[0027] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention; it is obvious that the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0028] Example 1

[0029] like Figure 1-5 As shown, a sleeve 5 is sleeved inside the handle 1; a negative pressure tube 6 is sleeved inside the sleeve 5; and the rear end of the negative pressure tube 6 is fixedly connected to the handle 1;

[0030] The front end of the sleeve 5 is fixedly connected to one end of the memory wire 14, and a ring groove 3 is provided on one side of the sleeve 5 to be slidably connected to the slider 8; a push block 4 is provided on the upper end of the slider 8, and a control ring 9 is fixedly connected to the lower end; a memory wire 14 is fixedly connected to one side of the control ring 9, a groove is provided inside the control ring 9, the inner ring surface is slidably connected to the outer gear 11, and the outer ring surface is slidably connected to the inner gear 10; memory wires 14 are respectively provided at the top of the inner gear 10 and the outer gear 11, and a control gear 12 is provided at the connection between the two to mesh; a gear is provided on the concave surface of the inner gear 10; a gear is provided on the convex surface of the outer gear 11;

[0031] A control rod 13 is provided at the lower end of the control gear 12, penetrating through the end of the handle 1 and fixedly connected to a knob 16;

[0032] The front ends of the three memory wires 14 are merged together and fixedly connected to the front end of the sleeve 5;

[0033] The circular groove 3 penetrates the handle 1; a push-pull groove 2 is provided at the circular groove 3 on the handle 1 to be slidably connected to a push block 4;

[0034] The front end of the negative pressure tube 6 is provided with a suction cup 7, and the rear end is provided with a negative pressure device 15 fixedly connected to the handle 1;

[0035] In this embodiment, when the device is in use, the medical staff holds the handle 1 and brings the front end of the sleeve 5 of the device close to the foreign body in the eye. At this time, the front ends of the three memory wires 14 are merged together, and the front end of the merged memory wire 14 is put on the foreign body in the eye to initially frame the foreign body. The knob 16 at the end of the handle 1 is rotated, and the knob 16 drives the control rod 13 to rotate. The control rod 13 rotates the control gear 12, and the control gear 12 drives the inner gear 10 and the outer gear 11 to rotate toward both ends respectively, thereby driving the memory wire 14 connected thereto to move from different directions and gradually wrap the foreign body. At this time, the negative pressure device 15 is started, and the suction cup 7 at the front end of the negative pressure tube 6 generates suction to absorb the foreign body, and further fix the auxiliary memory wire 14 to ensure that the foreign body is stably clamped. After the foreign body is stably clamped, the doctor slowly removes the device from the eye to complete the foreign body removal operation;

[0036] In this embodiment, three memory wires 14 are arranged at the front end of the sleeve 5. When the medical staff rotates the knob 16 at the end of the handle 1, the control gear 12 drives the inner gear 10 and the outer gear 11 to rotate toward both ends respectively, so that the memory wires 14 connected to them move from different directions and wrap the foreign matter. Compared with the traditional single clamping method, this multi-directional wrapping method can more comprehensively contact and fix the foreign matter, greatly improve the clamping force of the foreign matter, and effectively prevent the foreign matter from slipping due to shaking, friction, etc. during the removal process. No matter how irregular the shape of the foreign matter is, the three memory wires 14 can fit its contour as much as possible, provide a stable gripping force, and ensure that the foreign matter remains fixed during the removal process;

[0037] The front ends of the three memory wires 14 are combined together and fixedly connected to the front end of the sleeve 5. In the initial stage, the memory wires 14 can be concentrated into a bundle, which is convenient for the doctor to accurately approach the foreign body in the eye and easily complete the extraction action. After the extraction, through subsequent operations, the memory wires 14 can be flexibly expanded to wrap the foreign body from different directions according to the shape of the foreign body, which ensures the convenience of operation without affecting the stability of clamping;

[0038] The negative pressure tube 6 is arranged inside the sleeve 5, and its front end is equipped with a suction cup 7, and the rear end is connected to the negative pressure device 15. When the memory wire 14 completes the preliminary clamping of the foreign body, the negative pressure device 15 is started, and the suction cup 7 will generate a strong suction force to tightly absorb the foreign body, further enhancing the fixing effect of the foreign body. This dual fixing method combining the clamping of the memory wire 14 and the negative pressure adsorption provides a double guarantee for the stable removal of the foreign body, effectively reduces the risk of the foreign body falling off during the removal process, and greatly improves the success rate of the operation;

[0039] In this embodiment, the memory wire 14 has a certain flexibility, and can be appropriately deformed according to the shape of the foreign object when clamping the foreign object, so as not to cause excessive squeezing or damage to the foreign object, and at the same time, it can also avoid causing hard damage to the surrounding eye tissues. The negative pressure adsorption method is also relatively gentle, and will not cause direct physical damage to the eye tissues, further protecting the patient's eye health;

[0040] In summary, the present invention arranges three memory wires 14 at the front end of the sleeve 5. After the foreign object is taken out, the rear end knob 16 is rotated to drive the internal control gear 12 to rotate, so that the outer gear 11 and the inner gear 10 at both ends rotate toward the two ends respectively. The memory wires 14 on both sides wrap the foreign object from different directions, effectively preventing the foreign object from falling during the removal process, and greatly improving the stability of clamping the foreign object.

[0041] At the same time, a negative pressure tube 6 is arranged inside the sleeve 5, and a suction cup 7 is arranged at the front end of the negative pressure tube 6. After clamping the foreign object, the suction cup 7 assists the memory wire 14 to adsorb and fix the foreign object, further enhancing the fixing effect. The double guarantee improves the stability of clamping the foreign object and reduces the risk of the foreign object slipping.

[0042] The preferred embodiments of the present invention disclosed above are only used to help explain the present invention. The preferred embodiments do not describe all the details in detail, nor do they limit the invention to only the specific implementation methods described.

Claims

1. A stable intraocular foreign body removal device, characterized in that: include: Grip, cannula, negative pressure tube; A sleeve is sleeved inside the handle; a negative pressure tube is sleeved inside the sleeve; the rear end of the negative pressure tube is fixedly connected to the handle; One end of the memory wire is fixedly connected to the front end of the sleeve, and a ring groove is set on one side of the sleeve to be slidably connected to the slider; a push block is set on the upper end of the slider, and the lower end is fixedly connected to the control ring; one side of the control ring is fixedly connected to a memory wire, a groove is set inside the control ring, the inner ring surface is slidably connected to the outer gear, and the outer ring surface is slidably connected to the inner gear; memory wires are respectively set at the top of the inner gear and the outer gear, and a control gear is set at the connection between the two to mesh.

2. A stable intraocular foreign body removal device according to claim 1, characterized in that: The concave surface of the internal gear is provided with a gear.

3. A stable intraocular foreign body removal device according to claim 1, characterized in that: The convex surface of the external gear is provided with a gear.

4. A stable intraocular foreign body removal device according to claim 1, characterized in that: The lower end of the control gear is provided with a control rod which penetrates through the end of the handle and is fixedly connected to a knob.

5. A stable intraocular foreign body removal device according to claim 1, characterized in that: The front ends of the three memory wires are merged together and fixedly connected to the front end of the sleeve.

6. A stable intraocular foreign body removal device according to claim 1, characterized in that: The circular groove penetrates the handle; a push-pull slide groove is arranged at the circular groove on the handle to slidably connect the push block.

7. A stable intraocular foreign body removal device according to claim 1, characterized in that: A suction cup is arranged at the front end of the negative pressure tube, and a negative pressure device is arranged at the rear end to be fixedly connected with a handle.

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