Minimally invasive incision negative pressure sucker type intraocular foreign matter holder

Abstract

The invention relates to a minimally invasive incision negative pressure suction cup type intraocular foreign matter holder. The device comprises a handle head, a handle, an air plug, an air pipe, an air pipe connector, an inner needle pushing piece, a suction cup, an outer needle, an inner needle and an air hole. An outer needle is arranged at the front end of the handle head, an inner needle is arranged in a sleeve formed by the outer needle, an elastic retractable sucker is mounted at the front end of the inner needle, and an inner needle push piece is mounted at the rear end of the inner needle; the sucker, the inner needle, the air plug, the air pipe and the air pipe connector form a negative pressure air channel. According to the device, foreign matter grabbing is achieved through negative pressure, the negative pressure can be adjusted to the proper size in real time according to the foreign matter of different materials, shapes and weights so that the optimal grabbing effect can be obtained, and especially when the foreign matter is large in size and cannot be conveniently clamped through a tweezers type intraocular instrument, the ideal grabbing effect can be achieved through the negative pressure holding capacity of the device. By means of the device, the risk that the retina is accidentally injured in the foreign matter grabbing process can be greatly reduced, and the device is simple in structure, convenient to use, safe, reliable, high in practicability and good in popularization prospect.

Description

Technical Field

[0001] The invention belongs to the technical field of ophthalmic surgical instruments, and in particular relates to a minimally invasive incision negative pressure suction cup type intraocular foreign body holder. Background Art

[0002] At present, the mainstream technology for removing intraocular foreign bodies is vitrectomy-assisted foreign body removal. Foreign body removal methods generally include two main methods: microscopic intraocular forceps clamping and magnetic foreign body remover adsorption, as well as a combination of each other. However, the above methods have insurmountable drawbacks. For example, due to the limitation of the opening and closing size of the forceps head, it is difficult to remove foreign bodies that are too large, too thick, smooth, and have a low friction coefficient. The magnetic foreign body remover is limited by the magnetic characteristics of the foreign body, and non-magnetic foreign bodies cannot be removed. In addition, if the foreign body is not held firmly during the removal process and falls off, it will hit the retina again and cause irreversible iatrogenic damage, and in severe cases, it will lead to vision loss. Therefore, accurately grasping and fixing intraocular foreign bodies with smooth surfaces, too large, and too thick is a very big challenge in ophthalmic surgery.

[0003] Specifically, in order to meet the needs of minimally invasive ophthalmic surgery, the surgical incision is required to be as small as possible. Currently, the vitreous cavity puncture port is 23G, 25G or 20G. The foreign body removal equipment needs to be able to adapt to the size of the incision to enter the eye. At the same time, when in contact with the foreign body, a large contact area needs to be ensured to stabilize the foreign body and avoid the inability to grasp the foreign body or the foreign body falling off, causing secondary damage to the intraocular tissue. However, for foreign bodies with smooth surfaces, such as glass, plastic, dislocated artificial lenses, etc., due to their large size and low friction coefficient, existing foreign body removal instruments are difficult to effectively grasp, resulting in long surgery time and low success rate. At the same time, the possibility of repeated foreign body shedding causing damage to the retina and optic nerve in the eye is greatly increased. Summary of the invention

[0004] In order to overcome the above-mentioned defects of existing intraocular foreign body removal instruments, the present invention designs a new minimally invasive incision negative pressure suction cup type intraocular foreign body gripper. The present invention is based on clinical practice and proposes a new solution for removing non-magnetic foreign bodies that have a relatively smooth contact surface but are large in size and are not convenient for clamping with tweezers-type instruments. No similar invention patents or patent applications were found after searching.

[0005] The present invention provides a tool for sucking foreign matter or dislocated crystal (complete crystal or nucleus falling into the vitreous cavity), artificial crystal, glass, plastic, etc. in the eye (vitreous cavity) by negative pressure through a minimally invasive incision (25G, 23G or 20G). The head end of the instrument of the present invention adopts a retractable design, and can enter the eye through a minimally invasive incision, and use negative pressure in the eye (vitreous cavity) to suck foreign matter or other target objects to be removed, and after firmly grasping them, take them out of the eye (take out foreign matter or dislocated artificial crystal, glass, plastic) or remove them (such as dislocated crystal or nucleus) with the assistance of other instruments.

[0006] The purpose of the present application is to provide a minimally invasive incision negative pressure suction cup type intraocular foreign body holder which is simple in structure, easy to use, safe and reliable.

[0007] Specifically, the present invention provides a minimally invasive incision negative pressure suction cup type intraocular foreign body holder, which uses negative pressure holding force to grasp the intraocular foreign body; the intraocular foreign body holder comprises: a handle 1, a handle 2, an air plug 3, an air tube 4, an air tube joint 5, an inner needle push piece 6, a suction cup 7, an outer needle 8, an inner needle 9, and an air hole 10; wherein: The handle 1 and the handle 2 constitute the main body of the intraocular foreign body holder; The front end of the handle 1 is provided with an outer needle 8, the outer needle 8 forms a sleeve structure, the inner needle 9 is placed in the sleeve formed by the outer needle 8, the front end of the inner needle 9 is installed with a suction cup 7, and a circular hole is provided in the middle of the suction cup 7 to connect with the inner needle 9; The air plug 3 is arranged at the position where the handle 1 and the handle 2 are connected, and a ventilation hole 10 is opened on the air plug 3; The inner needle 9 is provided with an inner needle push piece 6 at the rear end thereof; The suction cup 7 is an elastic and retractable suction cup with a smooth surface; The front end of the air pipe 4 is connected to the air plug 3, and the rear end passes through the handle 2 and is connected to the air pipe connector 5; The suction cup 7, inner needle 9, air plug 3, trachea 4, and tracheal connector 5 constitute a negative pressure air channel; after blocking the hole in the suction cup 7, the air vent 10, and the tracheal connector 5, the suction cup 7, inner needle 9, air cavity, air plug 3, trachea 4, and tracheal connector 5 can form a closed cavity.

[0008] Furthermore, the intraocular foreign body gripper of the present invention can adjust the negative pressure value in the negative pressure air channel in real time according to intraocular foreign bodies of different materials, shapes and weights, so as to obtain the best intraocular foreign body grasping effect. Especially when the foreign body is large and it is inconvenient to clamp it using tweezers-like intraocular instruments, the negative pressure grasping ability of this instrument will achieve an ideal grasping effect.

[0009] Furthermore, when the outer needle 8 of the intraocular foreign body holder of the present invention enters the eye during storage or use, the suction cup 7 is built into the outer needle 8 to accommodate a minimally invasive incision. When the outer needle 8 enters the eye and its front end approaches the foreign body (reaches the target point), the suction cup 7 is pushed out by the inner needle push piece 6, and the suction cup 7 opens to absorb the foreign body.

[0010] Furthermore, before the intraocular foreign body holder of the present invention is used to absorb foreign bodies, the air holes 10 on the air plug 3 are opened. When the foreign body is to be absorbed, the air holes 10 are blocked with the fingertips, forming a suction cup 7 to establish negative pressure by squeezing the air plug 3 or the tracheal connector 5 and an external negative pressure suction device, thereby achieving the function of foreign body holding.

[0011] Furthermore, in the intraocular foreign body holder of the present invention, the foreign body is stabilized by negative pressure gripping and then moved inside the eye by operating the handle 2 .

[0012] Furthermore, when the intraocular foreign body holder of the present invention needs to be withdrawn after the adsorption and holding operation is completed (or the operation strategy is changed), the suction cup 7 is recovered through the inner needle push piece 6 so that it is built into the outer needle 8, which is convenient for withdrawal.

[0013] Preferably, the handle 1 and the handle 2 in the intraocular foreign body holder of the present invention are made of medical plastic materials; the suction cup 7 is made of medical silicone rubber or flexible medical plastic.

[0014] Preferably, the suction cup 7 described in the intraocular foreign body holder of the present invention is in a circular disc shape when in the pushed-out state.

[0015] Furthermore, the negative pressure air channel in the intraocular foreign body holder of the present invention establishes negative pressure in any one of the following two modes: (1) Connect the negative pressure suction device through the tracheal connector 5 to establish negative pressure and hold the foreign body; (2) By blocking the air pipe connector 5, the fingers avoid the air holes 10 of the air plug 3, press the air plug 3 to expel the gas in the air plug 3, and then close the air holes 10 with the fingers. After the suction cup 7 is attached to the smooth surface of the foreign object, the pressure on the air cavity is released but the air holes 10 are kept blocked to create negative pressure in the cavity, thereby grasping the foreign object.

[0016] Furthermore, the suction cup 7 in the intraocular foreign body holder of the present invention is made of magnetic material, and has a dual adsorption and holding effect of negative pressure adsorption and magnetic adsorption on magnetic foreign bodies.

[0017] In summary, compared with the existing intraocular foreign body removal instruments, the minimally invasive incision negative pressure suction cup type intraocular foreign body holder of the present invention has the following advantages: (1) The use of this instrument greatly reduces the risk of accidentally injuring the retina and other important intraocular structures when using foreign body forceps to grab foreign bodies or artificial lenses located on the retinal surface in the vitreous cavity.

[0018] (2) This device uses negative pressure to grasp foreign bodies. It can adjust the negative pressure to an appropriate size in real time for foreign bodies or artificial lenses and lens nuclei of different materials, shapes and weights to obtain the best grasping effect. Especially when the foreign body is large and thick and it is inconvenient to grasp it using tweezers or other intraocular instruments, the negative pressure grasping ability of this device will achieve an ideal grasping effect.

[0019] (3) The device has a simple structure, is easy to use, safe and reliable, has high practicality and good promotion prospects. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only for the specific embodiments described in the present invention. For those skilled in the art, other drawings can be obtained based on the drawings described below without paying any creative work.

[0021] Figure 1 It is a cross-sectional view of the overall structure of the device of the present invention (suction cup built-in state).

[0022] Figure 2 It is a cross-sectional view of the overall structure of the device of the present invention (suction cup pushed out state).

[0023] Figure 3 The figure is a schematic diagram of the product appearance of the device of the present invention (suction cup pushed out state).

[0024] Figure 4 The figure is a schematic diagram of the product appearance of the device of the present invention (suction cup built-in state).

[0025] Figure 5 It is a cross-sectional view of the front end structure of the device of the present invention (suction cup pushed out state).

[0026] Figure 6 It is a cross-sectional view of the front end structure of the device of the present invention (suction cup built-in state).

[0027] Figure 7 This is a cross-sectional view of the outer needle structure of the device of the present invention.

[0028] Figure 8 This is a cross-sectional view of the inner needle structure of the device of the present invention (with the suction cup built-in).

[0029] Fig. 9 It is a cross-sectional view of the suction cup structure of the device of the present invention.

[0030] Fig.10 It is a cross-sectional view of the handle structure of the device of the present invention.

[0031] Fig.11It is a cross-sectional view of the gas plug structure of the device of the present invention.

[0032] Reference numerals: 1-handle; 2-handle; 3-air plug; 4-trachea; 5-trachea joint; 6-inner needle push piece; 7-suction cup; 8-outer needle; 9-inner needle; 10-air vent. DETAILED DESCRIPTION

[0033] The technical solution of the present invention is clearly and completely described below through specific examples. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Those skilled in the art can easily understand other advantages of the present invention from the contents disclosed in this specification. The present invention can also be implemented or applied through other different specific embodiments, and the details in this specification can also be modified or changed in various ways based on different viewpoints and applications without departing from the spirit of the present invention.

[0034] Before further describing the specific embodiments of the present invention, it should be understood that the protection scope of the present invention is not limited to the specific embodiments described below; the terms used in the examples of the present invention are for describing the specific embodiments rather than for limiting the protection scope of the present invention.

[0035] Unless otherwise defined, all technical and scientific terms used in the present invention have the same meanings as those commonly understood by those skilled in the art. In addition to the specific methods, equipment, and materials used in the embodiments, any methods, equipment, and materials of the prior art that are similar or equivalent to the methods, equipment, and materials in the embodiments of the present invention may be used to implement the present invention, based on the prior art mastery of those skilled in the art and the description of the present invention.

[0036] In the present invention, unless otherwise specified, all devices and materials are commercially available or commonly used in the industry.

[0037] Embodiment A minimally invasive incision negative pressure suction cup type intraocular foreign body gripper The purpose of this embodiment is to provide a minimally invasive incision negative pressure suction cup type intraocular foreign body holder that is simple in structure, easy to use, safe and reliable. In order to achieve the above purpose, the present invention proposes the following technical solutions.

[0038] like Figure 1-Figure 11 As shown, the minimally invasive incision negative pressure suction cup type intraocular foreign body holder of the present invention comprises: a handle head 1, a handle 2, an air plug 3, an air tube 4, an air tube joint 5, an inner needle push piece 6, a suction cup 7, an outer needle 8, an inner needle 9, and an air hole 10; wherein: The handle 1 and the handle 2 constitute the main body of the intraocular foreign body holder. The handle 1 is in the shape of a bullet head and is made of medical silicone rubber material. An outer needle 8 is arranged at the front end of the handle 1, and the outer needle 8 forms a sleeve structure. An inner needle 9 is placed in the sleeve formed by the outer needle 8. A suction cup 7 is installed at the front end of the inner needle 9. A circular hole is arranged in the middle of the suction cup 7 to connect with the inner needle 9. The air plug 3 is arranged at the position where the handle 1 and the handle 2 are connected, and a ventilation hole 10 is opened on the air plug 3; An inner needle push piece 6 is installed at the rear end of the inner needle 9; The suction cup 7 is an elastic and retractable suction cup with a smooth surface. The suction cup 7 is made of medical silicone rubber and is in a round disc shape when in the pushed-out state. The front end of the air pipe 4 is connected to the air plug 3, and the rear end passes through the handle 2 and is connected to the air pipe connector 5; The suction cup 7, inner needle 9, air plug 3, trachea 4, and tracheal connector 5 constitute a negative pressure air channel; after blocking the hole in the suction cup 7, the air vent 10, and the tracheal connector 5, the suction cup 7, inner needle 9, air cavity, air plug 3, trachea 4, and tracheal connector 5 can form a closed cavity.

[0039] When the outer needle 8 enters the eye during storage or use, the suction cup 7 is built into the outer needle 8 to adapt to the minimally invasive incision. When the outer needle 8 enters the eye and its front end approaches the foreign body (reaches the target point), the suction cup 7 is pushed out by the inner needle push piece 6, and the suction cup 7 opens to absorb the foreign body.

[0040] The negative pressure channel creates negative pressure in one of two ways: (1) Connect the negative pressure suction device through the tracheal connector 5 to establish negative pressure and hold the foreign body; (2) By blocking the air pipe connector 5, the fingers avoid the air holes 10 of the air plug 3, press the air plug 3 to expel the gas in the air plug 3, and then close the air holes 10 with the fingers. After the suction cup 7 is attached to the smooth surface of the foreign object, the pressure on the air cavity is released but the air holes 10 are kept blocked to create negative pressure in the cavity, thereby grasping the foreign object.

[0041] After the foreign body is stabilized by negative pressure gripping, the foreign body is moved in the eye by operating the handle 2.

[0042] Before sucking the foreign matter, the air hole 10 on the air plug 3 is opened. When sucking the foreign matter, the air hole 10 is blocked with the fingertips to form a negative pressure on the suction cup 7, thereby achieving the function of holding the foreign matter.

[0043] When the adsorption and holding operation is finished (or the operation strategy is changed) and it is necessary to exit, the suction cup 7 is recovered through the inner needle push piece 6 so that it is built into the outer needle 8 for easy exit.

[0044] The preferred specific implementation modes and embodiments of the present invention are described in detail above, but the present invention is not limited to the above implementation modes and embodiments, and various changes can be made within the knowledge scope of those skilled in the art without departing from the concept of the present invention.

Claims

1. A minimally invasive incision negative pressure suction cup type intraocular foreign body holder, characterized in that: The intraocular foreign body gripper utilizes negative pressure gripping force to grasp the intraocular foreign body; The intraocular foreign body holder comprises: a handle (1), a handle (2), an air plug (3), an air tube (4), an air tube joint (5), an inner needle push piece (6), a suction cup (7), an outer needle (8), an inner needle (9), and an air hole (10); wherein: The handle (1) and the handle (2) constitute the main body of the intraocular foreign body holder; An outer needle (8) is arranged at the front end of the handle (1), the outer needle (8) forms a sleeve structure, the inner needle (9) is placed in the sleeve formed by the outer needle (8), a suction cup (7) is installed at the front end of the inner needle (9), and a circular hole is arranged in the middle of the suction cup (7) to connect with the inner needle (9); The air plug (3) is arranged at a position where the handle (1) and the handle (2) are connected, and is provided with an air hole (10); An inner needle push piece (6) is installed at the rear end of the inner needle (9); The suction cup (7) is an elastic and retractable suction cup; The front end of the air pipe (4) is connected to the air plug (3), and the rear end passes through the handle (2) and is connected to the air pipe joint (5); The suction cup (7), the inner needle (9), the air plug (3), the air pipe (4), and the air pipe joint (5) constitute a negative pressure air passage.

2. The intraocular foreign body holder according to claim 1, characterized in that: The intraocular foreign body gripper can adjust the negative pressure value in the negative pressure air channel in real time according to intraocular foreign bodies of different materials, shapes and weights, so as to obtain the best intraocular foreign body grasping effect.

3. The intraocular foreign body holder according to claim 1, characterized in that: When the outer needle (8) enters the eye during storage or use, the suction cup (7) is built into the outer needle (8) to accommodate the minimally invasive incision. When the outer needle (8) enters the eye and its front end approaches the foreign body, the suction cup (7) is pushed out through the inner needle push piece (6), and the suction cup (7) opens to absorb the foreign body.

4. The intraocular foreign body holder according to claim 3, characterized in that: Before the foreign matter is sucked, the air hole (10) on the air plug (3) is opened. When the foreign matter is sucked, the air hole (10) is blocked with the fingertips to form a negative pressure on the suction cup (7), thereby achieving the function of holding the foreign matter.

5. The intraocular foreign body holder according to claim 3, characterized in that: After the foreign body is stabilized by negative pressure gripping, the foreign body is moved within the eye by operating the handle (2).

6. The intraocular foreign body holder according to claim 3, characterized in that: When the suction and holding operation is completed and it is necessary to exit, the suction cup (7) is recovered through the inner needle push piece (6) so that it is built into the outer needle (8) to facilitate exit.

7. The intraocular foreign body holder according to claim 1, characterized in that: The handle (1) and the handle (2) are made of medical plastic material; the suction cup (7) is made of medical silicone rubber or flexible medical plastic.

8. The intraocular foreign body holder according to claim 1, characterized in that: The suction cup (7) is in a circular disc shape when in the pushed-out state.

9. The intraocular foreign body holder according to claim 1, characterized in that: The negative pressure gas channel establishes negative pressure in any of the following two modes: (1) Connect the negative pressure suction device through the tracheal connector (5) to establish negative pressure and grasp the foreign body; (2) By blocking the air pipe joint (5), the fingers avoid the air holes (10) of the air plug (3), press the air plug (3) to discharge the air in the air plug (3), and then close the air holes (10) with the fingers. After the suction cup (7) is attached to the smooth surface of the foreign object, the pressure on the air cavity is released but the air holes (10) are kept blocked to create negative pressure in the cavity, thereby grasping the foreign object.

10. The intraocular foreign body holder according to claim 1, characterized in that: The suction cup (7) is made of magnetic material and has a dual adsorption and holding effect of negative pressure adsorption and magnetic adsorption on magnetic foreign matter.

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