Anterior eye vitrectomy handle device

Abstract

The invention discloses a front eye vitrectomy handle device, and relates to the technical field of vitrectomy equipment. Comprising an end cover, a shell, a rotary cutter, a motor and a negative pressure pipeline, the shell is of a hollow stepped cylindrical structure with one closed end and one open end; the rotary cutter is of a hollow cylindrical structure with one closed end and one open end; the rotary cutter is rotationally connected in the shell in a sleeving manner, a first adsorption hole is formed in the side wall of the shell, a second adsorption hole is formed in the side wall of the rotary cutter, and the end cover is detachably connected to the open end of the shell and seals the open end of the shell; a second channel is arranged in the end cover, the opening end of the rotary cutter is rotationally sleeved and hermetically connected with the second channel, the second channel is further fixedly and hermetically connected with a negative pressure pipeline, and the other end of the negative pressure pipeline is connected with a negative pressure source; the motor is arranged in the shell and drives the rotary cutter to rotate in the shell. The device is simple in structure, low in manufacturing cost, capable of utilizing existing resource facilities of hospitals, very convenient to use and capable of being used in primary hospitals.

Description

Technical Field

[0001] The present invention relates to the technical field of vitrectomy equipment, and specifically refers to a front segment vitreous resection handle device. Background Art

[0002] The classic surgical method for cataract is phacoemulsification cataract extraction combined with intraocular lens implantation. The more common complication during the operation is posterior capsule rupture of the lens, which will cause vitreous to enter the anterior chamber, as well as residual lens cortex or nuclear fragments. For such complications, the current treatment method is to use a vitreous cutter to completely remove the vitreous in the anterior chamber and the residual lens cortex or nuclear fragments. However, most of the related equipment is imported instruments, which are expensive, and it is often difficult for grass-roots hospitals to be equipped with them. This makes it difficult for grass-roots hospitals to handle cataract surgery complications. Patients usually need to go to higher-level hospitals for further treatment, which to a certain extent restricts the improvement of the medical level of grass-roots hospitals.

[0003] In addition, the currently used vitreous cutter itself has no power output and must be externally connected to large-scale instrument equipment to be used. During the operation, frequently replacing instrument equipment will not only delay the operation time, but also increase the risk of infection. Moreover, the existing vitreous cutter and its pipeline are all disposable products, which causes serious waste of resources. Summary of the Invention

[0004] The technical problem to be solved by the present invention is to provide a front segment vitreous resection handle device, which has a simple structure, low manufacturing cost, can be reused, can also utilize the existing resource facilities in the hospital, is very convenient to operate, and can also be equipped and used by grass-roots hospitals.

[0005] To solve the above technical problem, the technical solution adopted by the present invention is: a front segment vitreous resection handle device, including an end cap, a housing, a rotary cutter, a motor, and a negative pressure pipeline; the housing is a hollow stepped cylindrical structure with one end closed and one end open; the rotary cutter is a hollow cylindrical structure with one end closed and one end open; the rotary cutter is rotatably sleeved and connected inside the housing. The side wall of the closed end of the housing is provided with a first adsorption hole, and the side wall of the closed end of the rotary cutter is provided with a second adsorption hole. The end cap is detachably connected to the open end of the housing to seal the open end of the housing; a second channel is provided inside the end cap. The open end of the rotary cutter is rotatably sleeved and sealingly connected to the second channel, and the second channel is also fixedly and sealingly connected to the negative pressure pipeline. The other end of the negative pressure pipeline is connected to a negative pressure source; the motor is arranged inside the housing, and the motor drives the rotary cutter to rotate inside the housing. When the first adsorption hole and the second adsorption hole partially or completely overlap, due to the negative pressure inside the rotary cutter, the vitreous is adsorbed at the first adsorption hole. Through the rapid rotation of the rotary cutter, the vitreous is chopped by the rotary cutter, and the vitreous enters the inside of the rotary cutter through the second adsorption hole, and then enters the negative pressure pipeline through the second channel and is discharged.

[0006] Preferably, a first water channel is provided in the side wall of the shell, and a connecting portion is provided at the inlet of the first water channel, the connecting portion is connected to a water source, and water flows out of the shell through the first water channel.

[0007] Preferably, a protective cover made of silicone material is provided on the outside of the shell, and the inner wall of the protective cover is provided with an arc-shaped groove. The arc-shaped groove and the outer wall of the shell together form a second water channel. Water flowing out of the first water channel enters the eye through the second water channel to maintain the eye pressure.

[0008] Preferably, the closed end of the shell is hemispherical in shape, and the closed end of the rotary cutter is hemispherical in shape.

[0009] Preferably, a circle of limit platforms is provided inside the shell, the motor is cylindrical with an axial hole in the center, the rotating cutter passes through the axial hole and has an interference fit with the axial hole, one end face of the motor is in contact with the end face of the limit platform, and the other end face is in contact with the end cover.

[0010] Preferably, the vitrectomy handle device also includes a first gear and a second gear, the first gear and the outer wall of the rotating cutter are an integral structure, the motor is fixedly connected to the end cover, the output shaft of the motor is fixedly connected to the second gear, the second gear is meshingly connected to the first gear, and the motor drives the two gears to rotate.

[0011] Preferably, a first channel is provided on the end cover, and a power line of the motor extends out of the first channel.

[0012] Preferably, a circle of grooves is provided on the inner side wall of the shell, and the grooves are located at the position where the shell contacts the rotary cutter.

[0013] The beneficial effects of adopting the above technical solution are: The present invention is provided with a first water channel and a second water channel. When the device is used, negative pressure attracts the vitreous body while injecting water into the eye to maintain the balance of intraocular pressure, avoid complications such as choroidal detachment and expulsive hemorrhage caused by low intraocular pressure, and increase the safety of the operation.

[0014] The rotary cutter in the present invention is a hollow cylindrical structure with one end closed and the other end open, which is not only a vitreous cutting tool, but also a channel for discharging the vitreous body. The structure is ingenious and simple, easy to process, and low in manufacturing cost. In addition, the shapes of the rotary cutter and the closed end of the shell are both hemispherical, which prevents the tip from damaging the eyes and has good safety.

[0015] A very small gap is provided between the rotary cutter and the housing. The motor drives the rotary cutter to rotate inside the housing, cutting the large pieces of vitreous body adsorbed on the first adsorption holes into pieces. The vitreous body is sucked into the interior of the rotary cutter through the second adsorption holes and then discharged through the second channel on the end cover. The overall structure of this device is particularly simple compared to existing vitrectomy devices, with a very low manufacturing cost. Moreover, the negative pressure pipeline can be directly connected to the hospital's negative pressure pipeline without the need for additional auxiliary equipment, making it very convenient to use. Grassroots hospitals are fully capable of equipping it to improve the medical level. Therefore, this device has great significance for promotion.

[0016] This device can be reused. After each use, it can be first rinsed with distilled water and then sterilized with an ethylene oxide sterilization device. Each hospital is equipped with an ethylene oxide sterilization device to sterilize the medical devices in the hospital. Therefore, the sterilization operation of this device is also very simple, and it can be reused well. Brief Description of the Drawings

[0017] Figure 1 is the overall cross-sectional structure schematic diagram of Embodiment 1; Figure 2 is Figure 1 the schematic diagram of the A-A cross-section in Figure 3 is Figure 1 the schematic diagram of the B-B cross-section in Figure 4 is the overall cross-sectional structure schematic diagram of Embodiment 2; Figure 5 is Figure 4 the enlarged partial view in the C direction in In the figure: 1. End cover; 11. First channel; 12. Second channel, 13. Sealing groove; 2. Housing; 21. Limiting platform; 22. First adsorption hole; 23. First water channel, 24. Connecting part; 25. Groove; 3. Rotary cutter; 31. Second adsorption hole; 32. First gear; 4. Protective sleeve; 41. Second water channel; 5. Motor; 6. Negative pressure pipeline; 7. Second gear. Detailed Description of the Embodiment

[0018] Next, the technical solutions in the embodiments of the present application will be clearly and completely described in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without making creative efforts belong to the scope of protection of the present application. Embodiment

[0019] As Figures 1-3 shown, the handle device includes an end cover 1, a housing 2, a rotary cutter 3, a protective sleeve 4, a motor 5, and a negative pressure pipeline 6.

[0020] Among them, the outer shell 2 is a hollow stepped cylindrical structure with one end closed and one end open, and its shape is convenient for doctors to grasp. The shape of the closed end of the outer shell 2 is a hemisphere to avoid damaging the eyes and improve safety. The outer shell 2 is made of plastic. The side wall of the closed end of the outer shell 2 is provided with a first adsorption hole 22.

[0021] The rotary cutter 3 is a hollow cylindrical structure with one end closed and one end open, and there is a cavity channel in the middle. The shape of the closed end of the rotary cutter 3 is also a hemisphere, made of plastic material. The rotary cutter 3 is connected to the negative pressure source of the hospital through a negative pressure pipeline 6. The side wall of the closed end of the rotary cutter 3 is provided with a second adsorption hole 31. When part or all of the second adsorption hole 31 coincides with the first adsorption hole 22, large pieces of vitreous body are first adsorbed in the first adsorption hole 22. With the rapid rotation of the rotary cutter 3, the rotary cutter 3 cuts the large pieces of vitreous body into pieces, and the chopped vitreous body is sucked into the cavity inside the rotary cutter 3 through the second adsorption hole 31 and finally discharged from the negative pressure pipeline 6. To reduce the friction between the rotary cutter 3 and the outer shell 2, a circle of grooves 25 is provided on the inner wall of the outer shell 2 to reduce the contact area between the outer shell 2 and the rotary cutter 3.

[0022] A first water channel 23 is provided inside the side wall of the outer shell 2 and is connected to a water source through a pipeline via a connecting part 24. The pipeline can be fixedly connected to the connecting part 24 by threads or bonded with glue. A protective sleeve 4 made of silica gel is also sleeved on the outer shell 2. The inner wall of the protective sleeve 4 is provided with an arc-shaped groove, and the arc-shaped groove and the outer wall of the outer shell 1 together form a second water channel 41. The water flowing out of the first water channel 23 enters the eye through the second water channel 41 to maintain the intraocular pressure.

[0023] The end cap 1 can be connected to the outer shell 2 by a buckle or a bolt. When the rotary cutter 3 is damaged, the end cap 1 can be easily removed to replace the rotary cutter 3.

[0024] To protect the motor 5 and prevent the mixture of vitreous body and water from entering, a rectangular sealing groove is provided on the outer shell 2, and an O-ring is also provided to seal the gap between the rotary cutter 3 and the second channel 12. A first channel 11 is provided on the end cap 1, and the power cord of the motor 5 can extend out from the first channel 11 to connect to a power source.

[0025] In this embodiment, the motor 5 is columnar and has a shaft hole in the center. The rotary cutter 3 is in interference fit with the shaft hole. A circle of limit platforms 21 is provided inside the outer shell 1. One end face of the motor 5 is in contact with the end face of the limit platform 21, and the other end face is in contact with the end cap 1. The motor 5 is embedded in the outer shell 2 and its axial displacement is restricted by the limit platform 21 and the end cap 1, that is, the axial displacement of the rotary cutter 3 is restricted. Figure 1In [the above], the motor 5 is arranged at the opening of the outer shell 2. In order to make the force on the rotary cutter 3 more reasonable, the motor 5 can be arranged in the middle of the outer shell 2. As the limiting platform 21 moves its position, the motor 5 can be fixed to the limiting platform 21 by bolts, which also plays a role in restricting the axial displacement of the motor 5 and the rotary cutter 3. Embodiment

[0026] As Figure 4 shown, in this embodiment, a first gear 32 is arranged on the outer wall of the rotary cutter 3. The first gear 32 and the rotary cutter 3 are of an integral structure. The motor 5 is fixedly connected to the end cover 1 by bolts, and the output shaft of the motor 5 is fixedly connected to a second gear 7, and the second gear 7 meshes with the first gear 32. To limit the axial displacement of the rotary cutter 3, a ring of convex platforms can be arranged on the end cover, and the open end face of the rotary cutter 3 can be abutted against the end face of the convex platform.

[0027] After the use of this device, the head of the outer shell 2 can be immersed in distilled water, and the motor 5 can be started to wash the inside of the device. After the washing is completed, it can be disinfected and sterilized by the hospital disinfection staff using an ethylene oxide sterilization device for the next use.

[0028] The above is only the preferred specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention, according to the technical solution of the present invention and its inventive concept, makes equivalent substitutions or changes, and should be covered within the protection scope of the present invention.

Claims

1. An anterior vitrectomy handle device, characterized in that: The invention comprises an end cover (1), an outer shell (2), a rotary cutter (3), a motor (5), and a negative pressure pipeline (6); the outer shell (2) is a hollow stepped cylindrical structure with one end closed and the other end open; the rotary cutter is a hollow cylindrical structure with one end closed and the other end open; the rotary cutter (3) is rotatably sleeved and connected in the outer shell (2); a first adsorption hole (22) is provided on the side wall of the closed end of the outer shell; a second adsorption hole (31) is provided on the side wall of the closed end of the rotary cutter (3); the end cover (1) is detachably connected to the open end of the outer shell (2) to seal the open end of the outer shell (2); a second channel (12) is provided in the end cover (1); the open end of the rotary cutter (3) is rotatably sleeved and sealedly connected to the second channel (12), the second channel (12) is also fixedly and sealingly connected to the negative pressure pipeline (6), and the other end of the negative pressure pipeline (6) is connected to the negative pressure source; the motor (5) is arranged inside the housing (2), and the motor (5) drives the rotary cutter (3) to rotate inside the housing (2); when the first adsorption hole (22) and the second adsorption hole (31) are partially or completely overlapped, due to the negative pressure inside the rotary cutter (3), the vitreous body is adsorbed at the first adsorption hole (22), and the vitreous body is cut into pieces by the rotary cutter (3) through the rapid rotation of the rotary cutter (3), and the vitreous body enters the interior of the rotary cutter (3) through the second adsorption hole (31), and then enters the negative pressure pipeline (6) through the second channel (12) and is discharged.

2. The anterior vitrectomy handle device according to claim 1, characterized in that: A first water channel (23) is provided in the side wall of the outer shell (2), and a connecting portion (24) is provided at the inlet of the first water channel (23). The connecting portion (24) is connected to a water source, and water flows out of the outer shell (2) through the first water channel (23).

3. The anterior vitrectomy handle device according to claim 2, characterized in that: A protective cover (4) made of silicone material is sleeved on the outer surface of the outer shell (2); an arc-shaped groove is provided on the inner wall of the protective cover (4); the arc-shaped groove and the outer wall of the outer shell (2) together form a second water channel (41); water flowing out of the first water channel (23) enters the eye through the second water channel (41) to maintain intraocular pressure.

4. The anterior vitrectomy handle device according to claim 1, characterized in that: The closed end of the shell (2) has a hemispherical shape, and the closed end of the rotary cutter (3) has a hemispherical shape.

5. The anterior vitrectomy handle device according to claim 1, characterized in that: A circle of limiting platforms (21) is provided inside the housing (2). The motor (5) is cylindrical with a shaft hole at its center. The rotary cutter (3) passes through the shaft hole and is interference fit with the shaft hole. One end face of the motor (5) is in contact with the end face of the limiting platform (21), and the other end face is in contact with the end cover (1).

6. The anterior vitrectomy handle device according to claim 1, characterized in that: The vitrectomy handle device further comprises a first gear (32) and a second gear (7); the first gear (32) and the outer wall of the rotary cutter (3) are an integral structure; the motor (5) is fixedly connected to the end cover (1); the output shaft of the motor (5) is fixedly connected to the second gear (7); the second gear (7) is meshingly connected to the first gear (32); and the motor drives the two gears to rotate.

7. The anterior vitrectomy handle device according to claim 1, characterized in that: A first channel (11) is provided on the end cover (1), and a power line of the motor (5) extends out from the first channel (11).

8. The anterior vitrectomy handle device according to claim 1, characterized in that: A circle of grooves (25) is provided on the inner side wall of the outer shell (2), and the grooves (25) are located at a position where the outer shell (2) contacts the rotating cutter (3).

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