Macular hole obturator
By designing a macular hole tampon and combining a fan-shaped push plate with a puncture device, the problem of the difficulty in tamping the internal limiting membrane with forceps was solved, achieving efficient and safe treatment of macular holes.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-02
- Publication Date
- 2026-03-20
AI Technical Summary
In the prior art, tweezers are difficult to effectively fill into the macular hole when used for internal limiting membrane tamponade, and there is a risk of tissue damage.
A macular hole tampon is designed, comprising a main rod, an extension rod, and a fan-shaped push plate. The arc-shaped push plate is used to insert the internal limiting membrane into the macular hole, and a fixed channel is formed in conjunction with the puncture device to reduce the risk of tissue damage.
It improves the efficiency and safety of internal limiting membrane tamponade, and reduces the difficulty of surgery and the risk of tissue damage.
Smart Images
Figure CN224008564U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model belongs to the field of ophthalmic medical apparatus and instruments, especially relates to a macular hole plugging device. BACKGROUND
[0002] At present, internal limiting membrane plugging surgery is widely used in macular hole treatment surgery, in the specific operation, first will use forceps from the macular area of the retina to peel off a layer of internal limiting membrane, in the prior art, usually the forceps used for peeling off the internal limiting membrane is directly used to plug the peeled internal limiting membrane into the macular hole. But in actual operation, because the front end structure of the forceps is relatively sharp, it is not convenient to fill the internal limiting membrane into the macular hole, and the sharp front end of the forceps can easily cause damage to the tissue, and there is a certain operation risk. SUMMARY
[0003] In order to solve the problems in the prior art, the utility model provides a macular hole plugging device, which is more convenient for internal limiting membrane plugging surgery, helps to improve the treatment efficiency of macular hole treatment, and reduces the treatment risk.
[0004] In order to realize the purpose of the utility model, the following scheme is adopted:
[0005] A macular hole plugging device, comprising: a main rod, the diameter of which is less than 0.5mm;
[0006] The lower end of the main rod is coaxially provided with an extension rod, and the outer diameter of the extension rod is smaller than that of the main rod;
[0007] The lower end of the extension rod is provided with a push plate, the push plate is of a fan-shaped structure, the lower end of the extension rod is connected to one end of the center of the fan-shaped structure, and one end of the arc-shaped edge of the fan-shaped structure protrudes from one side of the extension rod;
[0008] In the projection view of the extension rod axis, the maximum circumscribed circle diameter formed by the outer wall of the extension rod and the outer edge of the push plate is d, and d is less than 0.5mm.
[0009] The utility model has the advantages that the push plate is designed as a fan-shaped structure, which can reduce the projection profile in the direction of the main rod axis, and is more convenient to insert into the puncture device. At the same time, the fan-shaped structure makes the push plate have a certain coverage area, and the extension rod is arranged at the center of the fan-shaped structure. In this way, there is more space between the arc-shaped edge of the fan-shaped structure and the extension rod, which facilitates the arc-shaped edge of the fan-shaped structure to plug the internal limiting membrane into the macular hole, thereby improving the plugging efficiency and effect. In addition, the overall plate structure of the push plate can effectively reduce the risk of damaging the tissue and improve the safety of the operation. BRIEF DESCRIPTION OF DRAWINGS
[0010] The drawings described herein are only for illustrating the selected embodiments, but not all possible embodiments, and are not intended to limit the scope of the utility model.
[0011] Figure 1 It is the schematic diagram of the overall structure of the main rod, the extension rod, the push plate and the handle.
[0012] Figure 2 It is Figure 1 The local enlarged view at A in the figure.
[0013] Figure 3 It is the projection view from the bottom of the push plate to the axis direction of the main rod.
[0014] Figure 4 It is the schematic diagram of the external structure of the preferred embodiment of the macular hole plugger.
[0015] The figure marks: main rod-11, extension rod-12, push plate-13, handle-2, protective cover-3. DETAILED DESCRIPTION
[0016] In order to make the purpose, technical scheme and advantages of the embodiments of the present application more clear, the embodiments of the present application will be described in detail below with reference to the drawings, but the embodiments described in the present application are only part of the embodiments of the present application, not all the embodiments.
[0017] As a common sense of ophthalmic disease treatment, it should be known that a tool named trocar, i.e. a puncture device, needs to be used in the process of internal limiting membrane peeling and plugging, which has a structure similar to a needle tube, and the inner hole diameter standard is 0.5mm. The puncture device needs to be inserted into the retina in advance to form a temporary fixed channel during the operation. Because cleaning, dyeing, washing and other operations are needed during the operation, a series of operations need to use a special needle or hose to be inserted into the retina. After the puncture device is set, the above-mentioned needle or hose can be inserted through the channel in the puncture device, so as to avoid repeatedly and repeatedly perforating the retina, thereby improving the convenience and safety of the operation.
[0018] As Figures 1 to 3 shown, a macular hole plugger comprises a main rod 11, which has a diameter less than 0.5mm.
[0019] Specifically, as Figure 2 shown, the lower end of the main rod 11 is coaxially provided with an extension rod 12, and the outer diameter of the extension rod 12 is smaller than that of the main rod 11.
[0020] Specifically, as Figure 2 , Figure 3 shown, specifically, the lower end of the extension rod 12 is provided with a push plate 13, the push plate 13 has a fan-shaped structure, the lower end of the extension rod 12 is connected to one end of the center of the fan-shaped structure, one end of the arc-shaped edge of the fan-shaped structure protrudes from one side of the extension rod 12, and the cross section of the edge of the push plate 13 is a circular arc structure to avoid the existence of sharp edges.
[0021] Preferably, the thickness of the pusher plate 13 is less than or equal to 0.2 mm. Specifically, its thickness can be set to 0.15 mm, 0.1 mm or 0.05 mm. The pusher plate 13 should be set as a thin sheet structure as much as possible, which is more conducive to filling the inner limiting membrane into the macular pores.
[0022] Specifically, such as Figure 3 As shown, in the projection view of the axis of the extension rod 12, the diameter of the maximum circumscribed circle formed by the outer wall of the extension rod 12 and the outer edge of the push plate 13 is d, which is less than 0.5mm. The dashed circle in the figure is the projected outline of the extension rod 12, and the center circle is the maximum circumscribed circle formed by the outer wall of the extension rod 12 and the outer edge of the push plate 13.
[0023] As a commonly used material choice for medical devices, the main rod 11, extension rod 12 and push plate 13 are all made of high-quality alloy materials, with stainless steel being the preferred material.
[0024] This procedure also utilizes a trocar. First, the push plate 13 and extension rod 12 are passed through the trocar, then the main rod 11 is inserted inside. The packing operation can then begin. Because the outer diameter of the main rod 11 is larger than that of the extension rod 12, the gap between the outer wall of the main rod 11 and the inner wall of the trocar is smaller. This allows the inner wall of the trocar to provide local support for the main rod 11 during the procedure, and the smaller gap also prevents leakage of various fluids. During packing, the bottom surface of the push plate 13 pushes open the dissected internal limiting membrane, placing it in an unfolded state. Then, one end of the curved edge of the push plate 13 pushes the edge of the internal limiting membrane little by little into the macular hole. During the procedure, the packing device is continuously rotated around the trocar, thus packing the internal limiting membrane along the circumference of the macular hole. This packing device allows for more convenient and faster packing of the internal limiting membrane into the macular hole, thereby reducing the difficulty of the surgery.
[0025] Preferably, the outer diameter of the extension rod 12 is less than or equal to 0.4 mm. Under the condition that the strength of the extension rod 12 is qualified, the outer diameter of the extension rod 12 can be further reduced. Specifically, the outer diameter of the extension rod 12 can be set to 0.35 mm, 0.3 mm, 0.25 mm or even 0.2 mm, so as to maximize the distance between the arc edge of the push plate 13 and the outer wall of the extension rod 12, thereby making it easier to fill the inner boundary membrane into the yellow spot pore using the arc edge of the push plate 13.
[0026] Preferred, such as Figure 2 As shown, the push plate 13 and the extension rod 12 have an obtuse angle, which facilitates the filling of the inner boundary membrane into the macular pore using the arc-shaped edge of the push plate 13.
[0027] Preferred, such as Figure 1 ,Figure 4 As shown, the top of the main rod 11 is provided with a handle 2, which is configured as a cylindrical structure or a polygonal prism structure to facilitate gripping and rotation by hand; as a preferred structure, the handle 2 is coaxial with the main rod 11.
[0028] Preferred, such as Figure 1 , Figure 4 As shown, the macular hole tampon includes a protective cover 3, which is a tubular structure with one end detachably connected to the handle 2. The main rod 11, extension rod 12, and push plate 13 are all located inside the protective cover 3 to protect the main rod 11, extension rod 12, and push plate 13. Preferably, both the handle 2 and the protective cover 3 are made of plastic.
[0029] As a preferred structure, the protective cover 3 is configured as a tubular structure with one end open and the rest closed. Specifically, a rubber ring can be set on the outer wall of the handle 2, and the inner wall of the open end of the protective cover 3 is pressed and connected to the outer wall of the rubber ring. This achieves a detachable connection structure for the protective cover 3. Moreover, the rubber ring forms a sealing structure between the outer wall of the handle 2 and the inner wall of the protective cover 3, which plays a role in dust prevention and sealing. In addition, the rubber ring can improve the grip of the handle 2 and also play a role in anti-slip.
[0030] The above description is merely a preferred embodiment of this utility model and does not imply its uniqueness or limitation. Those skilled in the art should understand that various changes or equivalent substitutions made to this utility model without departing from its scope are all within the protection scope of this utility model.
Claims
1. A macular hole plugging device, characterized in that, include: The main rod (11) has a diameter of less than 0.5 mm; An extension rod (12) is coaxially provided at the lower end of the main rod (11), and the outer diameter of the extension rod (12) is smaller than the outer diameter of the main rod (11); The lower end of the extension rod (12) is provided with a push plate (13), which is a fan-shaped structure. The lower end of the extension rod (12) is connected to one end of the center of the fan-shaped structure, and one end of the arc edge of the fan-shaped structure protrudes from one side of the extension rod (12). In the projection view of the axis of the extension rod (12), the maximum diameter of the circumscribed circle formed by the outer wall of the extension rod (12) and the outer edge of the push plate (13) is d, which is less than 0.5 mm.
2. The macular hole plugging device according to claim 1, characterized in that, The outer diameter of the extension rod (12) is less than or equal to 0.4 mm.
3. A macular hole plugging device according to claim 1, characterized in that, The thickness of the push plate (13) is less than or equal to 0.2 mm.
4. A macular hole plugging device according to claim 1, characterized in that, The push plate (13) and the extension rod (12) have an obtuse angle.
5. A macular hole plugging device according to claim 1, characterized in that, The top of the main rod (11) is provided with a handle (2), which is set as a cylindrical structure or a polygonal prism structure.
6. A macular hole plugging device according to claim 5, characterized in that, It also includes a protective cover (3), which is a tubular structure with one end detachably connected to the handle (2). The main rod (11), extension rod (12) and push plate (13) are all located inside the protective cover (3).
7. A macular hole plugging device according to claim 6, characterized in that, The protective cover (3) is set to be open at one end and closed in the rest of the tubular structure. The outer wall of the handle (2) is provided with a rubber ring, and the inner wall of the open end of the protective cover (3) is squeezed and connected to the outer wall of the rubber ring.