A spade type substrate separator

Abstract

This utility model discloses a shovel-shaped stroma separator, including a gripping part and a working part arranged coaxially. The gripping part and the working part are connected by an adjusting rod unit. The working part includes an integrally formed connecting column and a separating head. The separating head is a shovel-shaped head, and the arc surface of the separating head matches the corneal stroma. By designing the separating head as a shovel-shaped head and making its arc surface match the corneal stroma, the shovel-shaped arc surface of the separating head can better conform to the natural curvature of the cornea, reduce the gap between the separator and the cornea, thereby providing more stable support and improving the fit. At the same time, the shovel-shaped arc surface can evenly distribute pressure, reducing local compression and damage to the corneal tissue.

Description

Technical Field

[0001] This utility model relates to the field of medical device technology, and in particular to a shovel-shaped matrix separator. Background Technology

[0002] When performing surgery to separate or manipulate the corneal stroma layers, a corneal stroma separator is used. Its main function is to create a separation space or gap between the corneal stroma layers, helping doctors to separate them for tissue implantation or removal. For example, Chinese patent application CN201922300643.9 discloses a novel corneal stroma separator, which consists of a working part and a handle. The working part has two parts: a cylindrical tip and a vertically elliptical cross-section with protrusions on the sides. This design can safely separate the corneal layers while ensuring a smooth separation, improving surgical efficiency. However, the drawback of this design is that the cylindrical tip of the working part cannot effectively adhere to the cornea when separating the layers, affecting the efficiency of the separation. Utility Model Content

[0003] In order to overcome the shortcomings of the existing technology, the technical problem to be solved by this utility model is to propose a shovel-shaped matrix separator. By modularly designing the gripping part and the working part, and matching the shovel-shaped head end of the working part, the bottom surface is curved to fit the cornea, ensuring smooth interlayer separation and improving surgical efficiency.

[0004] To achieve this objective, the present invention adopts the following technical solution:

[0005] This utility model provides a shovel-shaped stroma separator, including a gripping part and a working part arranged coaxially. The gripping part and the working part are connected by an adjusting rod unit. The working part includes an integrally formed connecting column and a separating head. The head end of the separating head is a rhomboid shovel-shaped head, and the head end is also provided with an arc surface that cooperates with the corneal stroma. The length of the arc surface is not less than two-thirds of the length of the head end. In this way, the shovel-shaped arc surface can evenly distribute pressure, improve the fit, and ensure the separation efficiency between corneal layers.

[0006] The adjusting rod unit includes a plurality of snap-fit ​​slots formed on the working part, the plurality of snap-fit ​​slots being evenly arranged along the axis of the gripping part. The gripping part has an insertion slot that mates with the working part. A snap-fit ​​part is provided at one end of the gripping part near the working part. The snap-fit ​​part is oriented to mate with the spade-shaped arc surface of the separating head. The snap-fit ​​part has a snap-fit ​​recess that mates with the snap-fit ​​slot. It also includes a snap-fit ​​connector that mates with the snap-fit ​​part. The snap-fit ​​connector is provided with an anti-slip layer. A snap-fit ​​flange that mates with the snap-fit ​​recess is fixed at the bottom of the snap-fit ​​connector. After the working part is inserted into the insertion slot, the snap-fit ​​slot mates with the snap-fit ​​recess, and the snap-fit ​​flange snaps into the snap-fit ​​slot to fix the working part.

[0007] To facilitate the fixing of the snap-fit ​​part and the snap-fit ​​connector, the snap-fit ​​part is provided with a slide rail that mates with the snap-fit ​​connector. The snap-fit ​​connector and the snap-fit ​​part are slidably connected by the slide rail. The snap-fit ​​part and the snap-fit ​​connector are also fixed with matching locking parts. Another fixing method is that the snap-fit ​​part is provided with a fastening part that mates with the snap-fit ​​connector. After the working part is inserted into the insertion slot, the snap-fit ​​connector is snapped into the fastening part to fix the working part.

[0008] The beneficial effects of this utility model are as follows:

[0009] This invention designs the separation head as a shovel-shaped head, with its curved surface matching the corneal stroma. This allows the shovel-shaped curved surface of the separation head to better conform to the natural curvature of the cornea, reducing the gap between the separator and the cornea, thereby providing more stable support and improving the fit. At the same time, the shovel-shaped curved surface can evenly distribute pressure, reducing local compression and damage to the corneal tissue. Attached Figure Description

[0010] Figure 1 This is a schematic diagram of a shovel-shaped matrix separator provided in one specific embodiment of this utility model;

[0011] Figure 2 yes Figure 1 Enlarged diagram of A in the middle;

[0012] Figure 3 This is an exploded structural diagram of a shovel-shaped matrix separator provided in a specific embodiment of this utility model;

[0013] Figure 4 A schematic diagram of the gripping part structure provided in the second specific embodiment of this utility model;

[0014] In the picture:

[0015] 1. Grip section;

[0016] 2. Working section; 21. Connecting column; 22. Separating head; 221. Head end;

[0017] 3. Adjusting rod unit; 31. Snap-fit ​​groove; 32. Insertion groove; 33. Snap-fit ​​part; 331. Snap-fit ​​concave flange; 34. Snap-fit ​​connector; 341. Snap-fit ​​protruding flange; 342. Anti-slip layer; 333. Slide rail; 332. Locking part; 35. Fastening part. Detailed Implementation

[0018] The technical solution of this utility model will be further described below with reference to the accompanying drawings and specific embodiments.

[0019] Example 1: To address the problem that the cylindrical separating head 22 of the stromal separator cannot effectively adhere to the cornea when separating corneal layers, as shown in the figure, this utility model provides a shovel-shaped stromal separator, including a gripping part 1 and a working part 2 arranged coaxially. The gripping part 1 and the working part 2 are connected by an adjusting rod unit 3. The working part 2 includes an integrally formed connecting column 21 and a separating head 22. The head end 221 of the separating head 22 is a rhomboid shovel-shaped head, and the head end 221 is also provided with an arc surface that cooperates with the corneal stroma. The length of the arc surface is not less than two-thirds of the length of the head end 221. This allows the shovel-shaped arc surface of the separating head 22 to better conform to the natural curvature of the cornea, reducing the friction between the separator and the cornea. The gaps between the two sides provide more stable support and improve fit. At the same time, the shovel-shaped arc surface can evenly distribute pressure, reducing local compression and damage to corneal tissue. The thinner front end of the shovel-shaped arc makes it easier to insert between the corneal stroma layers, reducing friction with corneal tissue and making the separator slide more easily, thereby improving separation efficiency. Compared with the traditional cylindrical tip, the shovel-shaped design can better fit the geometry of the cornea and better adapt to the potential stratification between corneal layers, reducing the possibility of the separator sliding or shifting during operation, thereby improving separation accuracy. In summary, changing the separation head 22 to a shovel shape can significantly improve the fit, separation efficiency, and accuracy of the separator.

[0020] Based on the above, different people have different corneal curvatures. The average curvature of the human cornea is approximately 7.5–8.5 mm. Therefore, to adapt to different corneal procedures, the adjustment lever unit 3 can be used to replace the separation head 22 with different curvatures. Specifically, the adjustment lever unit 3 includes several locking slots 31 formed on the working part 2. The locking slots 31 are evenly arranged along the axis of the gripping part 1. The gripping part 1 has insertion slots 32 that cooperate with the working part 2. A snap-fit ​​part 33 is provided near one end of the working part 2. The snap-fit ​​part 33 has a snap-fit ​​recess 331 that mates with the snap-fit ​​groove 31. It also includes a snap-fit ​​connector 34 that mates with the snap-fit ​​part 33. The bottom of the snap-fit ​​connector 34 is fixed with a snap-fit ​​flange 341 that mates with the snap-fit ​​recess 331. The snap-fit ​​connector 34 is also provided with an anti-slip layer 342. After the working part 2 is inserted into the insertion groove 32, the snap-fit ​​groove 31 mates with the snap-fit ​​recess 331, and the snap-fit ​​flange 341 snaps into the snap-fit ​​groove 31 to fix the working part 2. In operation, the selected working part 2 is first inserted into the insertion slot 32. The snap-fit ​​slot 31 and snap-fit ​​recess 331 on the working part 2 then engage. Finally, the snap-fit ​​flange 341 engages with the snap-fit ​​recess 331. This not only secures the working part 2 but also allows for the replacement of different snap-fit ​​slots 31 on the working part 2, adjusting the extension length of the connecting post 21. Simultaneously, the snap-fit ​​part 33 is oriented to align with the spade-shaped arc surface of the separating head 22 for easy observation of the connection. In the closed state, in order to fix the snap-fit ​​connector 34 and the snap-fit ​​part 33, the snap-fit ​​part 33 is provided with a slide rail 333 that cooperates with the snap-fit ​​connector 34. The snap-fit ​​connector 34 and the snap-fit ​​part 33 are slidably connected by the slide rail 333. The snap-fit ​​part 33 and the snap-fit ​​connector 34 are also fixed with a corresponding locking part 332. In this way, after the working part 2 is inserted into place, the snap-fit ​​connector 34 can be slid directly to drive the snap-fit ​​flange 341 to slide into the snap-fit ​​recess 331, and finally the locking part 332 is used to complete the fixation.

[0021] Example 2: Unlike the sliding fixing method of the snap-fit ​​part 33 and the snap-fit ​​connector 34 in Example 1, the snap-fit ​​part 33 is provided with a fastening part 35 that cooperates with the snap-fit ​​connector 34. After the working part 2 is inserted into the insertion slot 32, the snap-fit ​​connector 34 is pressed into the fastening part 35 to fix the working part 2. In this way, after the working part 2 is inserted into the position, it can be fixed by pressing with the fastening part 35.

[0022] This utility model has been described through preferred embodiments. Those skilled in the art will understand that various changes or equivalent substitutions can be made to these features and embodiments without departing from the spirit and scope of this utility model. This utility model is not limited to the specific embodiments disclosed herein; other embodiments falling within the scope of the claims of this application are all within the protection scope of this utility model.

Claims

1. A shovel-type substrate separator, comprising a gripping part (1) and a working part (2) arranged coaxially, characterized in that: The gripping part (1) and the working part (2) are connected by the adjusting rod unit (3). The working part (2) includes an integrally formed connecting column (21) and a separating head (22). The head end (221) of the separating head (22) is a rhomboid shovel-shaped head. The head end (221) is also provided with an arc surface that cooperates with the corneal stroma. The length of the arc surface is not less than two-thirds of the length of the head end (221).

2. The shovel-type matrix separator according to claim 1, characterized in that: The adjusting rod unit (3) includes a plurality of snap-fit ​​grooves (31) opened on the working part (2). The plurality of snap-fit ​​grooves (31) are evenly arranged along the axis of the gripping part (1). The gripping part (1) is provided with a plug groove (32) that cooperates with the working part (2). A snap-fit ​​part (33) is provided at one end of the gripping part (1) near the working part (2). The snap-fit ​​part (33) is provided with a snap-fit ​​recess (331) that cooperates with the snap-fit ​​groove (31). It also includes a snap-fit ​​connector (34) that mates with the snap-fit ​​part (33). The bottom of the snap-fit ​​connector (34) is fixed with a snap-fit ​​flange (341) that mates with the snap-fit ​​recess (331). After the working part (2) is inserted into the insertion slot (32), the snap-fit ​​slot (31) mates with the snap-fit ​​recess (331), and the snap-fit ​​flange (341) snaps into the snap-fit ​​slot (31) to fix the working part (2).

3. A shovel-shaped matrix separator according to claim 2, characterized in that: The card connector (34) is also provided with an anti-slip layer (342).

4. A shovel-shaped matrix separator according to claim 2, characterized in that: The snap-fit ​​part (33) is positioned to match the shovel-shaped arc surface of the separating head (22).

5. A shovel-type matrix separator according to claim 4, characterized in that: The snap-fit ​​part (33) is provided with a slide rail (333) that cooperates with the snap-fit ​​connector (34). The snap-fit ​​connector (34) and the snap-fit ​​part (33) are slidably connected by the slide rail (333). The snap-fit ​​part (33) and the snap-fit ​​connector (34) are also fixedly provided with a corresponding locking part (332).

6. A shovel-type matrix separator according to claim 4, characterized in that: The snap-fit ​​part (33) is provided with a fastening part (35) that cooperates with the snap-fit ​​connector (34). After the working part (2) is inserted into the insertion slot (32), the snap-fit ​​connector (34) is pressed into the fastening part (35) to fix the working part (2).

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