Replaceable amniotic membrane cutting device

Abstract

The utility model provides a replaceable amniotic membrane cutting device. The replaceable amniotic membrane cutting device comprises a device body, a tool bit and a base. The device body comprises an upper cutter body and a lower cutter body, the upper cutter body and the lower cutter body are connected through a connecting piece, a groove is formed in the tail end of the upper cutter body, a round hole is formed in the lower portion of the tail end of the upper cutter body, and a first threaded hole is formed in the side face of the tail end of the upper cutter body. The head end of the tool bit is sharp, the tail end of the tool bit is thick, and the tail end of the tool bit is mounted in the groove; the base is located at the tail end of the lower knife body, and an embedding groove is formed in the base; the scalpel head is designed to be fixed in a clamping mode, the upper scalpel body is divided into a plurality of modules, the scalpel head is convenient to disassemble and replace, the diameter of the scalpel head can be changed according to operation requirements, and therefore the functions of high precision, high efficiency, easy operation and the like are achieved.

Description

Technical Field

[0001] This utility model relates to the field of medical devices, and in particular to a replaceable amniotic membrane cutter. Background Technology

[0002] Refractory macular holes refer to those that do not respond well to conventional treatments and usually require more complex surgical methods. Amniocentesis is one such surgical method for treating refractory macular holes. It uses amniotic tissue to fill the macular hole to promote retinal healing. In traditional amniocentesis, manual cutting is the main method. However, traditional cutting methods have the following drawbacks:

[0003] 1. The amniotic membrane is highly elastic, and manual cutting relies too much on the surgeon's experience. Cutting with scissors results in a large error, especially when cutting in batches. The workload of manual cutting is enormous, consuming a lot of time and energy. Summary of the Invention

[0004] The purpose of this invention is to solve the above-mentioned problems by proposing a replaceable amniotic membrane cutter.

[0005] To achieve the above objectives, the following technical solution was adopted:

[0006] A replaceable amniotic membrane cutter, characterized in that it comprises a device body, a blade head, and a base; the device body includes an upper blade and a lower blade, the upper blade and the lower blade are connected by a connector, the upper blade has a groove inside its end, a round hole below the end of the upper blade, and a first threaded hole on the side of the end of the upper blade; the blade head is shaped with a pointed tip and a thicker end, and the end of the blade head is installed inside the groove; the base is located at the end of the lower blade, and the base has an embedding groove.

[0007] Preferably, the end of the upper blade is divided into two detachable parts, and the interior of the end of the upper blade is hollow. The interior of the upper blade has two grooves, and a round hole is provided below the end of the upper blade.

[0008] Preferably, the grooves are respectively placed inside the upper blade, one of which is fixed to the upper blade, and the other groove can move inside the upper blade. The groove is provided with a first threaded hole, and a micro screw is installed in the first threaded hole. The groove is connected by the micro screw, and a locking device is installed at the other end of the micro screw. The groove is provided with a groove.

[0009] Preferably, the upper blade has a second threaded hole on the side of its end, and a screw is installed in the second threaded hole, through which the upper blades are connected to each other.

[0010] Preferably, the cutter head has a pointed tip and a thicker end, with a raised ring at the end of the cutter head. The groove on the groove matches the raised ring, and the end of the cutter head matches the groove. The cutter head consists of several replaceable cutter heads with a diameter of 400~2000μm.

[0011] Preferably, the base has an embedding groove on its upper part that matches the blade head, and a support block is provided on the lower part of the base, the support block being installed at the end of the lower blade.

[0012] Compared with the prior art, the beneficial effects of this utility model are as follows: based on the size of the slit hole as determined by preoperative OCT examination, a blade of appropriate diameter is selected and installed to accurately obtain a biological amniotic membrane of appropriate size, which significantly improves the accuracy of material retrieval and also improves surgical efficiency. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the structure of a replaceable amniotic membrane cutter according to Embodiment 1 of this utility model;

[0014] Figure 2 This is a front view of the upper blade of a replaceable amniotic membrane cutter according to Embodiment 1 of this utility model;

[0015] Figure 3 This is a schematic diagram of the back of the upper blade of a replaceable amniotic membrane cutter according to Embodiment 1 of this utility model;

[0016] Figure 4 This is a schematic diagram of the lower blade of a replaceable amniotic membrane cutter according to Embodiment 1 of this utility model; Detailed Implementation

[0017] The following describes a replaceable amniotic membrane cutter according to the present invention with reference to the accompanying drawings.

[0018] like Figure 1 The replaceable amnion cutter shown includes a device body 1, a blade head 2, and a base 3; the device body 1 includes an upper blade 11 and a lower blade 12, which are connected by a connector.

[0019] like Figure 2 and Figure 3 As shown, the upper blade 11 has a groove 111 inside the end, a round hole 112 below the end of the upper blade, and a first threaded hole 113 on the side of the end of the upper blade 11. The end of the blade head 2 is installed inside the groove 111.

[0020] Preferably, the end of the upper blade 11 is divided into two detachable parts, and the inside of the end of the upper blade 11 is hollow. The inside of the upper blade 11 is provided with two grooves 111, and a round hole 112 is provided below the end of the upper blade 11.

[0021] Preferably, the grooves 111 are respectively placed inside the upper blade 11, one of which is fixed on the upper blade 11, and the other groove 111 can move inside the upper blade 11. The groove 111 is provided with a first threaded hole 113, and a micro screw 1131 is installed in the first threaded hole 113. The groove 111 is connected by the micro screw 1131. The other end of the micro screw 1131 is provided with a locking device 1132. The groove 111 is provided with a groove 114.

[0022] Preferably, the side of the end of the upper blade 11 is provided with a second threaded hole 115, and a screw 1151 is installed in the second threaded hole 115. The upper blades 11 are connected to each other by the screw 1151.

[0023] Preferably, the cutter head 2 has a pointed tip and a thicker end. The end of the cutter head 2 is provided with a ring of protrusions. The groove 114 matches the protrusions, and the end of the cutter head 2 matches the groove 111. The cutter head 2 is a number of replaceable cutter heads with a diameter of 400~2000μm.

[0024] like Figure 4 As shown, the base 3 is located at the end of the lower blade 12, and the base 3 is provided with an embedding groove 31.

[0025] Preferably, the base 3 has an embedding groove 31 on the upper part that matches the cutter head 2, and a support block 32 is provided on the lower part of the base 3. The support block 32 is installed at the end of the lower cutter body 12.

[0026] In this embodiment, based on the size of the rupture hole as determined by the preoperative OCT examination, a suitable blade is selected. The micro screw 1131 on the upper blade body 11 is removed, allowing the groove 111 to move. At the same time, the end of the blade is installed in the groove 111 through the round hole 112, so that the end of the blade 2 is locked in the groove 114. After installation, the micro screw 1131 is tightened. The amniotic membrane cutter is used to cut the dry amniotic membrane. The blade 2 is used to press the amniotic membrane sheet into the base 3 to accurately obtain an amniotic membrane sheet of the appropriate size.

[0027] The above description is merely a preferred embodiment of this application and is not intended to limit the scope of this application. Those skilled in the art may find other optimizations and additional functions in this application. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of this application should be included within the scope of protection of this application.

Claims

1. A replaceable amnion cutter, characterized in that: The device includes a main body (1), a cutting head (2), and a base (3). The main body (1) includes an upper cutting body (11) and a lower cutting body (12). The upper cutting body (11) and the lower cutting body (12) are connected by a connector. The upper cutting body (11) has a groove (111) inside its end and a round hole (112) below its end. The side of the end of the upper cutting body (11) has a first threaded hole (113). The cutting head (2) is shaped with a pointed tip and a thicker end. The end of the cutting head (2) is installed inside the groove (111). The base (3) is located at the end of the lower cutting body (12) and has an embedding groove (31).

2. The replaceable amnion cutter as described in claim 1, characterized in that: The end of the upper blade (11) is divided into two detachable parts, and the end of the upper blade (11) is hollow. The interior of the upper blade (11) is provided with two grooves (111), and the lower part of the end of the upper blade (11) is provided with a round hole (112).

3. The replaceable amnion cutter as described in claim 2, characterized in that: The grooves (111) are respectively placed inside the upper blade (11), one of which is fixed on the upper blade (11), and the other groove (111) can move inside the upper blade (11). The groove (111) is provided with a first threaded hole (113), and a micro screw (1131) is installed in the first threaded hole (113). The groove (111) is connected by the micro screw (1131). The other end of the micro screw (1131) is provided with a locking device (1132). The groove (111) is provided with a groove (114).

4. The replaceable amnion cutter as described in claim 2, characterized in that: The upper blade (11) has a second threaded hole (115) on the side of its end. A screw (1151) is installed in the second threaded hole (115), and the upper blades (11) are connected to each other by the screw (1151).

5. The replaceable amnion cutter as described in claim 1, characterized in that: The cutter head (2) is shaped with a pointed tip and a thicker end. The end of the cutter head (2) is provided with a ring of protrusions. The groove (114) on the groove (111) matches the protrusions. The end of the cutter head (2) matches the groove (111). The cutter head (2) is a number of replaceable cutter heads with a diameter of 400~2000μm.

6. The replaceable amnion cutter as described in claim 1, characterized in that: The base (3) has an embedding groove (31) above it that matches the blade (2), and a support block (32) is provided below the base (3). The support block (32) is installed at the end of the lower blade (12).

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