Device for taking out intraocular silicone oil

Abstract

The internal space of the negative pressure cylinder is divided into two parts by a movable piston, the end face of the first part forms a connecting element, the connecting element is sleeved with a connecting pipe made of an elastic material, the end face of the connecting pipe is horizontal and is in contact with an eyeball, and the end face of the connecting pipe is in contact with the eyeball. The puncture cannula is contained in the connecting tube and abuts against the connecting element; the end face of the second part is open for taking out the piston; the edge of the end face of the second part is turned outwards to form a fixing element; the air guide element comprises a fixing plate and an air guide pipe, the fixing plate is provided with a fixing groove for the fixing element to be clamped in, a sealing element is arranged on the same surface with the fixing groove, and the sealing element can seal the second part; the air guide pipe penetrates through the fixing plate and the sealing element to enable the second part to be communicated with the outside. According to the utility model, the silicone oil suction rate is greatly improved, and the puncture sleeve does not shift.

Description

Technical Field

[0001] The utility model relates to the field of ophthalmic surgery auxiliary instruments, in particular to an intraocular silicone oil removal device. Background Art

[0002] Medical silicone oil is polydimethylsiloxane, a colorless and transparent liquid with stable chemical properties, non-toxic and harmless to the human body. It is lighter than water and floats above the vitreous cavity when injected into the eye. After injection into a crystalline eye, it can produce +5.0D hyperopia, and can partially offset the aphakic refractive state in an aphakic eye. The commonly used viscosity in clinical practice is 1,000 to 5,000. Low-viscosity silicone oil is easy to inject, but it is easy to emulsify in the eye, while high-viscosity silicone oil is the opposite.

[0003] The indications for final filling with silicone oil during surgery are mainly severe proliferative diabetic retinopathy combined with tractional or rhegmatogenous retinal detachment, and those who are not suitable for gas filling need to be filled with silicone oil. However, the injection of silicone oil into the vitreous cavity will cause some complications, such as cataracts. Therefore, after the silicone oil has completed its filling task, it should be removed as soon as possible before complications occur.

[0004] The existing method of removing silicone oil is to make an incision in the sclera through surgery, use an oil extraction needle to enter the puncture cannula, and the puncture cannula enters the eye through the incision to form a channel for extracting silicone oil. This solution will make the suction hole smaller, the suction speed slower, and affect the operation time. Utility Model Content

[0005] The utility model aims to solve one of the technical problems in the above-mentioned technology at least to a certain extent. To this end, the purpose of the utility model is to provide a device that increases the silicone oil suction rate when sucking silicone oil in the eye and prevents the puncture cannula from shifting.

[0006] In order to achieve the above-mentioned purpose, the embodiment of the utility model provides an intraocular silicone oil removal device, comprising:

[0007] Negative pressure cylinder: The internal space of the negative pressure cylinder is divided into two parts by a movable piston. The end surface of the first part forms a connecting element, and the connecting element is sleeved with a connecting tube made of elastic material. The end surface of the connecting tube is horizontal and in contact with the eyeball. The puncture cannula is accommodated in the connecting tube and abuts against the connecting element. The end surface of the second part is open for the piston to be taken out. The edge of the end surface of the second part is turned outward to form a fixing element.

[0008] Connecting element: one end of which is concave inwards to form a receiving seat for the puncture sleeve to be inserted; the other end is connected to the negative pressure cylinder;

[0009] Air guide element: includes a fixing plate and an air guide tube, wherein the fixing plate has a fixing groove for the fixing element to be inserted into, and a sealing element is provided on the same surface as the fixing groove, and the sealing element can close the second part; the air guide tube passes through the fixing plate and the sealing element to connect the second part with the outside.

[0010] An intraocular silicone oil removal device according to an embodiment of the utility model has at least the following beneficial effects:

[0011] 1. When the negative pressure cylinder is sucking silicone oil, the puncture sleeve abuts against the connecting element and will not move;

[0012] 2. Connect the external negative pressure pump through the air guide element, which is easy to operate with one hand.

[0013] In addition, the intraocular silicone oil removal device proposed in the above embodiment of the utility model may also have the following additional technical features:

[0014] Optionally, an elastic fixing sheet is provided in the fixing groove, and when the fixing element is inserted, the elastic fixing sheet abuts against the fixing element, so that the sealing element is in close contact with the negative pressure cylinder.

[0015] Optionally, the inner diameter of the negative pressure cylinder is between 13.9 mm and 14.1 mm. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a structural schematic diagram according to an embodiment of the utility model;

[0017] Figure 2 It is a partial enlarged view of a connecting element according to an embodiment of the utility model;

[0018] Figure 3 A top view of a structure according to an embodiment of the utility model;

[0019] Figure 4 The figure is a schematic diagram of the use according to one embodiment of the utility model.

[0020] Description of labels:

[0021] Negative pressure cylinder 1 first part 11 second part 12 piston 13 fixing element 14

[0022] Connecting element 2 connecting pipe 21

[0023] The air guide element 3 has a fixing plate 31 and a fixing groove 311 , and an air guide tube 32 and a sealing element 33 . DETAILED DESCRIPTION

[0024] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present invention, and should not be construed as limiting the present invention.

[0025] In the utility model, since the puncture sleeve abuts against the negative pressure cylinder connecting element and is restricted from moving by the connecting pipe, when the silicone oil is sucked, the puncture sleeve will not be displaced due to the suction force, and the utility model is convenient for one-handed operation.

[0026] In order to better understand the above technical solution, exemplary embodiments of the present invention will be described in more detail below with reference to the accompanying drawings. Although exemplary embodiments of the present invention are shown in the accompanying drawings, it should be understood that the present invention can be implemented in various forms and should not be limited by the embodiments described herein. On the contrary, these embodiments are provided to enable a more thorough understanding of the present invention and to fully convey the scope of the present invention to those skilled in the art.

[0027] In order to better understand the above technical solution, the above technical solution will be described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0028] Figures 1 to 4 An intraocular silicone oil removal device according to an embodiment of the utility model comprises:

[0029] Negative pressure cylinder 1: The internal space of the negative pressure cylinder 1 is divided into two parts by a movable piston 13. The end face of the first part 11 forms a connecting element 2. The connecting element 2 is sleeved with a connecting tube 21 made of elastic material. The end face of the connecting tube 21 is horizontal and can be made of medical silicone or other similar elastic materials so as not to damage the sclera when in contact with the eyeball. When in use, the horizontal end face reduces damage to the eyeball tissue and has better airtightness. The puncture cannula is accommodated in the connecting tube 21 and abuts against the end face of the connecting element 2. In this way, the movement of the puncture cannula is restricted, solving a series of problems caused by the displacement of the puncture cannula under the action of suction in the background technology. The end face of the second part 12 is open for the piston 13 to be taken out; the edge of the end face of the second part 12 is turned outward to form a fixing element 14; when in use, the negative pressure cylinder 1 provides negative pressure to cause the silicone oil to be sucked into the first part 11 of the cylinder;

[0030] The air guide element 3 includes a fixing plate 31 and an air guide tube 32. The fixing plate 31 has a fixing groove 311 for the fixing element 14 to be inserted into. A sealing element 33 is provided on the same surface as the fixing groove 311. The sealing element 33 can close the second part 12. The air guide tube 32 passes through the fixing plate 31 and the sealing element 33 to connect the second part 12 with the outside.

[0031] In the existing method of extracting silicone oil, the puncture cannula is plugged into the hose. Due to the high viscosity of silicone oil, when the suction force is large, the puncture cannula will be directly sucked into the hose, affecting the surgical process. The utility model can solve this problem. Specifically, when in use, negative pressure is created in the negative pressure cylinder 1, and the sucked silicone oil is stored in the first part 11; while the puncture cannula is in the connecting tube 21, its directional movement is restricted by the connecting tube 21, and increasing the suction pressure will not cause it to move backward, so it plays a good role in fixing;

[0032] Preferably, the connecting tube 21, which is sleeved on the puncture cannula, needs to have a length greater than the overall length of the puncture cannula, and when in use, the connecting tube 21 will change in size due to elasticity, and the changed size should not be shorter than the length of the puncture cannula.

[0033] After the operation is completed, the piston 13 is taken out from the second portion 12 to allow the silicone oil in the negative pressure cylinder 1 to flow out.

[0034] The purpose of the air guide element 3 is to temporarily close the second part 12 with the fixing plate 31, and to reduce the air pressure of the second part 12 through the air guide tube 32, and then the air pressure of the first part 11 and the second part 12 is balanced through the movement of the piston 13. In this process, the first part 11 can extract the silicone oil. Compared with manual extraction directly using a syringe, the air guide tube 32 can be connected to an external vacuum pump. Only one hand is needed to complete the operation during extraction, and the pressure is stabilized by the machine during the extraction process, which is safer.

[0035] A capacity scale can be set on the negative pressure cylinder 1 to facilitate the grasp of the amount of silicone oil extracted; one end of the piston 13 can be set to be conical, matching the shape formed by the negative pressure cylinder 1 to reduce the excess space in the negative pressure cylinder 1 as much as possible.

[0036] In some embodiments, an elastic fixing sheet is provided in the fixing groove 311. When the fixing element 14 is inserted, the elastic fixing sheet abuts against the fixing element 14, so that the sealing element 33 is closely abutted against the negative pressure cylinder 1. Specifically, the fixing sheet is a rectangular sheet structure, the fixing groove 311 is arranged on two opposite sides of the rectangle, and both ends of the fixing groove 311 are open, and the sealing element 33 can be a plug inserted into the open end surface of the second part 12, or it can be made of elastic material and larger than the structure of the negative pressure cylinder 1 itself; no matter which structure of the sealing element 33 is adopted, when using it, the open end surface of the second part 12 is first opened. The end face is pressed to cooperate with the sealing element 33. At this time, the fixing element 14 is aligned with the position without the fixing groove 311. Further pressing is performed, and the negative pressure cylinder 1 is rotated to make the fixing element 14 slide from the open part of the fixing groove 311 into the fixing groove 311, and then released. Under the action of the fixing element 14, the negative pressure cylinder 1 is pushed away from the fixing plate, so that the fixing element 14 is tightly matched with the surface in the fixing groove 311 to achieve locking. When an elastic fixing plate is provided in the fixing groove 311, it can better push against the fixing element 14 to complete the fixation, thereby better maintaining the sealing of the sealing element 33 to the second part 12.

[0037] The specific finished product structure, in which the puncture cannula specification is a valveless cannula or a self-closing valve puncture cannula with a 23G specification, has an outer diameter of 2.2606mm at the widest point, and the corresponding inner diameter of the connecting tube 21 must match it, and the negative pressure cylinder 1 needs to be specially customized. The inner diameter of the syringe part of the existing 10ml syringe is 14.8mm, and the outer diameter of the finished product of the sealing element 33 on the market is between 14.4 and 14.6, which is slightly smaller than the inner diameter of the ordinary 10ml syringe. Therefore, it needs to be specially customized to adapt to the size of the sealing element 33. Preferably, the inner diameter of the negative pressure cylinder is between 13.9mm and 14.1mm, preferably 14.06mm. This size can achieve the best fit with the existing sealing element 33.

[0038] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0039] In the present utility model, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0040] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representation of the above terms should not be understood as necessarily being directed to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine different embodiments or examples described in this specification.

[0041] Although the embodiments of the present invention have been shown and described above, it can be understood that the above embodiments are exemplary and cannot be understood as limitations of the present invention. Ordinary technicians in the field can change, modify, replace and modify the above embodiments within the scope of the present invention.

Claims

1. An intraocular silicone oil removal device, characterized in that: include Negative pressure cylinder: The internal space of the negative pressure cylinder is divided into two parts by a movable piston. The end surface of the first part forms a connecting element, and the connecting element is sleeved with a connecting tube made of elastic material. The end surface of the connecting tube is horizontal and in contact with the eyeball. The puncture cannula is accommodated in the connecting tube and abuts against the connecting element. The end surface of the second part is open for the piston to be taken out. The edge of the end surface of the second part is turned outward to form a fixing element. Air guide element: includes a fixing plate and an air guide tube, wherein the fixing plate has a fixing groove for the fixing element to be inserted into, and a sealing element is provided on the same surface as the fixing groove, and the sealing element can close the second part; the air guide tube passes through the fixing plate and the sealing element to connect the second part with the outside.

2. The intraocular silicone oil removal device according to claim 1, characterized in that: An elastic fixing sheet is arranged in the fixing groove. When the fixing element is inserted, the elastic fixing sheet abuts against the fixing element, so that the sealing element is in close contact with the negative pressure cylinder.

3. The intraocular silicone oil removal device according to claim 1, characterized in that: The inner diameter of the negative pressure cylinder is between 13.9 mm and 14.1 mm.

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