Ophthalmic surgical probe device

Abstract

The present invention provides an ophthalmic surgical probe device, which relates to the technical field of medical instruments and includes a cutting unit, an adjustment unit, a shell and a driving unit; the cutting unit includes an outer cutting needle and an inner cutting needle, the outer cutting needle has at least two first openings on the same side, and the two opposite sides of the inner cutting needle each have at least one second opening, and the adjustment unit adjusts the position of the first opening to correspond or staggered with the second opening; the adjustment unit can realize the correspondence between the different opening positions of the outer cutting needle and the inner cutting needle through the adjustment unit, so as to meet the fine operation of higher cutting rate and lower suction flow in the fine cutting state, and meet the high efficiency operation of lower cutting efficiency and higher suction flow in the high efficiency cutting state, thereby alleviating the technical problem in the prior art that the modal working mode switching for fine cutting and high efficiency cutting cannot be met according to the needs of different surgical procedures.

Description

Technical Field

[0001] The present invention relates to the technical field of medical instruments, and in particular to an ophthalmic surgical probe device. Background Art

[0002] Microsurgery is a delicate procedure that typically utilizes optical magnification equipment and microsurgical instruments to cut or remove tissues from different locations. For example, in minimally invasive ophthalmic surgery, tissues such as the lens, cortex, broken nucleus, vitreous humor, and detached retina are cut and removed. Vitrectomy is currently the most effective method for complex posterior segment surgeries (such as vitreous hemorrhage, vitreous opacities, retinal detachment, macular holes, etc.). The vitreous humor is a transparent, viscoelastic, filamentous material that fills the posterior segment of the eye and adheres to the retina. Extreme care must be taken during the cutting and removal process to avoid pulling on the retina, which can cause holes and detachment.

[0003] In the prior art, as patients' requirements for minimal surgical trauma and postoperative suture-free surgery increase, the size of ophthalmic cutting probes has continued to shrink, from the traditional 20G (cutting probe outer diameter 0.9mm) and above to the current minimum specification 27G (outer diameter 0.4mm). However, as the probe outer diameter decreases, the inner diameter of the cutting needle in the cutting probe also decreases. This will result in a decrease in the efficiency of removing or aspirating shredded tissue fragments from the eye, thereby reducing the probe's working efficiency and increasing the duration of the operation. In addition, during vitrectomy, the doctor needs to first cut and remove the vitreous in the middle part of the posterior segment of the eyeball. At this time, a relatively low cutting efficiency and a high suction flow rate are required for efficient cutting and removal operations. After completion, the vitreous, proliferative membrane, detached retina and other tissues near the retina are finely cut and removed. Because the retinal tissue is relatively fragile, it is necessary to reduce the traction on it. At this time, a high cutting rate and a low suction flow rate are required for fine operations. However, the cutting and aspiration functions of the cutting probes in the prior art both occur at the same notch position, which cannot meet the complex multimodal working mode. Summary of the Invention

[0004] The object of the present invention is to provide an ophthalmic surgical probe device to alleviate the technical problem in the prior art of being unable to switch between modal working modes to perform fine cutting and efficient cutting according to different surgical procedures.

[0005] The present invention provides an ophthalmic surgical probe device, comprising: a cutting unit, an adjustment unit, a housing, and a driving unit;

[0006] The cutting unit includes an outer cutting needle and an inner cutting needle. The outer cutting needle has at least two first openings on the same side, and the edges of the first openings form cutting edges. The two opposite sides of the inner cutting needle each have at least one second opening, and the edges of the second openings form cutting edges. The outer cutting needle is sleeved on the outside of the inner cutting needle.

[0007] The housing is connected to the adjustment unit and the driving unit respectively, the adjustment unit is connected to the outer cutting needle, and the adjustment unit is used to drive the outer cutting needle to rotate relative to the inner cutting needle to adjust the position of the first opening and the second opening to correspond or misalign;

[0008] The driving unit is connected to the inner cutting needle, and is used to drive the inner cutting needle to move back and forth relative to the outer cutting needle, so as to cut the intraocular tissue through the incision formed by the first opening and the second opening.

[0009] In a preferred embodiment of the present invention, the driving unit includes a driving shaft, a sealing diaphragm and a connecting member;

[0010] The drive shaft is connected to the sealing diaphragm, and the drive shaft is connected to the cutting inner needle through the connecting piece;

[0011] The sealing diaphragm is located inside the shell, and the sealing diaphragm is sealingly and slidingly connected to the inner wall of the shell so that the shell forms a front cavity and a rear cavity. The front cavity and the rear cavity are used to alternately input or output pressure fluid to control the sealing diaphragm to move back and forth along the shell through the pressure fluid. The sealing diaphragm drives the cutting inner needle to move back and forth along the axial direction through the drive shaft and the connecting piece in turn.

[0012] In a preferred embodiment of the present invention, the housing includes a front housing and a rear housing;

[0013] The rear shell is provided with a first gas channel and a second gas channel, the front shell is provided with a third gas channel, the sealing diaphragm is provided with a through hole, the first gas channel is connected to the front cavity through the through hole and the third gas channel in sequence, and the second gas channel is connected to the rear cavity;

[0014] The rear shell is penetrated by a liquid outlet, the cutting inner needle is connected to the liquid outlet through the drive shaft, and the liquid outlet is connected to an external negative pressure source pipeline to allow the liquid and tissue cut from the cutting inner needle to flow into the external negative pressure source pipeline through the drive shaft and the liquid outlet.

[0015] In a preferred embodiment of the present invention, a first air inlet and a second air inlet are provided at one end of the rear shell away from the front shell, the first air inlet is connected to the first gas channel, the second air inlet is connected to the second gas channel, the first air inlet and the second air inlet are connected to an external ventilation pipe, the external ventilation pipe is used to alternately deliver pressurized gas to the first air inlet and the second air inlet, and the second air inlet and the first air inlet are used to alternately exhaust gas to the external ventilation pipe, so that the sealing diaphragm moves back and forth along the direction from the rear cavity to the front cavity, or along the direction from the front cavity to the rear cavity.

[0016] In a preferred embodiment of the present invention, the adjustment unit includes a modal adjuster and a limit slider;

[0017] One side of the modal adjuster is connected to the limit slider, the modal adjuster is connected to the cutting outer needle, and the modal adjuster is rotatably connected to the shell. A plurality of rotation grooves are provided at one end of the shell corresponding to the modal adjuster, and the limit slider can be engaged with any one of the rotation grooves to control the rotation angle of the cutting outer needle through the modal adjuster.

[0018] In a preferred embodiment of the present invention, the adjustment unit includes a modal adjustment end, a driving bevel gear, a driven bevel gear and a rotary bearing;

[0019] The driving bevel gear and the driven bevel gear are both arranged inside the housing, the rotary bearing is rotatably connected to the housing, the cutting outer needle is connected to the rotary bearing and the driven bevel gear in sequence, the modal adjustment end passes through the side wall of the housing and is transmission-connected to the driving bevel gear, and the modal adjustment end is used to drive the driven bevel gear to rotate through the driving bevel gear, so as to drive the cutting outer needle to rotate relative to the housing based on the rotary bearing.

[0020] In a preferred embodiment of the present invention, a mode indicating mechanism is provided on the housing;

[0021] The mode indicating mechanism is arranged corresponding to the adjusting unit to display the mode mode after the adjusting unit drives the cutting outer needle to rotate.

[0022] In a preferred embodiment of the present invention, the first opening includes a first inner recess and a second inner recess; the second opening includes a third inner recess and a fourth inner recess;

[0023] The cutting outer needle has a blocking end at one end away from the housing, the first inner recess and the second inner recess are located on the same side of the cutting outer needle, and the first inner recess is close to the blocking end of the cutting outer needle; the third inner recess and the fourth inner recess are respectively located on opposite sides of the cutting inner needle;

[0024] The regulation unit has a fine mode and an efficient mode:

[0025] In the fine mode, the third inner recess is arranged corresponding to the first inner recess, the fourth inner recess is arranged away from the second inner recess, the first inner recess and the cutting inner needle form a first liquid suction channel, and the second inner recess is in a closed state; the side wall of the first inner recess forms a first outer needle cutting edge and a second outer needle cutting edge, the end edge of the cutting inner needle forms the first inner needle cutting edge, and the edge of the third inner recess close to the blocking end forms the second inner needle cutting edge, when the cutting inner needle moves in the direction toward the blocking end, the first inner needle cutting edge and the first outer needle cutting edge form a cutting point, and when the cutting inner needle moves in the direction away from the blocking end, the second inner needle cutting edge and the second outer needle cutting edge form a cutting point;

[0026] In the high-efficiency mode, the fourth inner recess is arranged corresponding to the second inner recess, and the third inner recess is arranged away from the first inner recess. The first inner recess and the cutting inner needle form a first liquid suction channel, and the second inner recess and the cutting inner needle form a second liquid suction channel through the fourth inner recess; the side wall of the first inner recess forms a first outer needle cutting edge close to the edge of the blocking end, and the side wall of the second inner recess forms a third outer needle cutting edge away from the blocking end. The end edge of the cutting inner needle forms the first inner needle cutting edge, and the edge of the fourth inner recess forms the third inner needle cutting edge close to the blocking end. When the cutting inner needle moves in the direction toward the blocking end, the first inner needle cutting edge and the first outer needle cutting edge form a cutting point. When the cutting inner needle moves in the direction away from the blocking end of the cutting outer needle, the third inner needle cutting edge and the third outer needle cutting edge form a cutting point.

[0027] In a preferred embodiment of the present invention, the first opening includes a first inner recess and a second inner recess; the second opening includes a third inner recess, a fourth inner recess and a fifth inner recess;

[0028] The end of the cutting outer needle away from the housing has a blocking end, the first inner recess and the second inner recess are located on the same side of the cutting outer needle, and the first inner recess is close to the blocking end of the cutting outer needle; the third inner recess and the fourth inner recess are respectively located on opposite sides of the cutting inner needle, the fifth inner recess and the fourth inner recess are located on the same side of the cutting inner needle, and the fifth inner recess is spaced apart from the fourth inner recess;

[0029] The regulation unit has a fine mode and an efficient mode:

[0030] In the fine mode, the third inner recess is arranged corresponding to the first inner recess, the fourth inner recess and the fifth inner recess are both arranged away from the second inner recess, the first inner recess and the cutting inner needle form a first liquid suction channel, and the second inner recess is in a closed state; the side wall of the first inner recess forms a first outer needle cutting edge and a second outer needle cutting edge, the end edge of the cutting inner needle forms the first inner needle cutting edge, and the edge of the third inner recess close to the blocking end forms the second inner needle cutting edge, when the cutting inner needle moves in the direction toward the blocking end, the first inner needle cutting edge and the first outer needle cutting edge form a cutting point, and when the cutting inner needle moves in the direction away from the blocking end, the second inner needle cutting edge and the second outer needle cutting edge form a cutting point;

[0031] In the high-efficiency mode, the fourth inner recess and the fifth inner recess are arranged corresponding to the second inner recess, the third inner recess is arranged away from the first inner recess, the first inner recess and the cutting inner needle form a first suction channel, and the second inner recess forms a second suction channel with the cutting inner needle through the fourth inner recess and the fifth inner recess; the side wall of the first inner recess forms a first outer needle cutting edge close to the edge of the blocking end, the side wall of the second inner recess forms a third outer needle cutting edge and a fourth outer needle cutting edge, and the end edge of the cutting inner needle forms the first inner needle cutting edge The edge of the fourth inner recess close to the blocking end forms a third inner needle cutting edge, and the side wall of the fifth inner recess forms a fourth inner needle cutting edge and a fifth inner needle cutting edge. When the cutting inner needle moves in the direction toward the blocking end, the first inner needle cutting edge and the first outer needle cutting edge form a cutting point, and the fifth inner needle cutting edge and the fourth outer needle cutting edge form a cutting point. When the cutting inner needle moves in the direction away from the blocking end of the cutting outer needle, the third inner needle cutting edge and the third outer needle cutting edge form a cutting point, and the fourth inner needle cutting edge and the third outer needle cutting edge form a cutting point.

[0032] In a preferred embodiment of the present invention, the first opening includes a first inner recess and a second inner recess; the second opening includes a third inner recess, a fourth inner recess and a fifth inner recess;

[0033] The first opening includes a first inner recess and a second inner recess; the second opening includes a third inner recess, a fourth inner recess and a fifth inner recess;

[0034] The cutting outer needle has a blocking end at one end away from the shell, the first inner recess and the second inner recess are located on the same side of the cutting outer needle, and the first inner recess is close to the blocking end of the cutting outer needle; the third inner recess and the fourth inner recess are respectively located on opposite sides of the cutting inner needle, a plurality of the fifth inner recesses are provided, a plurality of the fifth inner recesses and the fourth inner recess are located on the same side of the cutting inner needle, and a plurality of the fifth inner recesses are arranged at intervals, and the fourth inner recess and the adjacent fifth inner recess are arranged at intervals; a plurality of the second inner recesses are provided, and the number of the second inner recesses corresponds one to one to the number of the fifth inner recesses;

[0035] The number of the first openings is n, and the number of the second openings is n+1;

[0036] The regulation unit has a fine mode and an efficient mode:

[0037] In the fine mode, the third inner recess is arranged corresponding to the first inner recess, the fourth inner recess and the plurality of fifth inner recesses are arranged away from the second inner recess, the first inner recess and the cutting inner needle form a first liquid suction channel, and the second inner recess is in a closed state; the side wall of the first inner recess forms a first outer needle cutting edge and a second outer needle cutting edge, the end edge of the cutting inner needle forms the first inner needle cutting edge, and the edge of the third inner recess close to the blocking end forms the second inner needle cutting edge, when the cutting inner needle moves in a direction toward the blocking end, the first inner needle cutting edge and the first outer needle cutting edge form a cutting point, and when the cutting inner needle moves in a direction away from the blocking end, the second inner needle cutting edge and the second outer needle cutting edge form a cutting point;

[0038] In the high-efficiency mode, the fourth inner recess and the fifth inner recess are arranged corresponding to the second inner recess, the third inner recess is arranged away from the first inner recess, the first inner recess and the cutting inner needle form a first liquid suction channel, and multiple second inner recesses form a second liquid suction channel with the cutting inner needle through the fourth inner recess and multiple fifth inner recesses; wherein, the cutting inner needle reciprocates along the cutting outer needle for one cycle, and the number of cuttings generated by the cutting inner needle and the cutting outer needle in each cycle is S=2*(1+2+…+n)+1 times.

[0039] The present invention provides an ophthalmic surgical probe device, comprising: a cutting unit, an adjustment unit, a housing, and a driving unit; the cutting unit comprises an outer cutting needle and an inner cutting needle, the outer cutting needle having at least two first openings on the same side thereof, and the edges of the first openings forming a cutting edge, the two opposite sides of the inner cutting needle each having at least one second opening, and the edges of the second openings forming a cutting edge, and the outer cutting needle being sleeved on the outside of the inner cutting needle; the housing is respectively connected to the adjustment unit and the driving unit, the adjustment unit being connected to the outer cutting needle, and the adjustment unit being used to drive the outer cutting needle to rotate relative to the inner cutting needle to adjust the positions of the first opening and the second opening to correspond or be misaligned; the driving unit Connected to the inner cutting needle, the driving unit is used to drive the inner cutting needle to move back and forth relative to the outer cutting needle to cut the intraocular tissue through the incision formed by the first opening and the second opening; through the control and adjustment of the adjustment unit, the corresponding arrangement of the different opening positions of the outer cutting needle and the inner cutting needle can be achieved, so as to meet the fine operation of higher cutting rate and lower suction flow in the fine cutting state, and meet the high-efficiency operation of lower cutting efficiency and higher suction flow in the high-efficiency cutting state, thereby alleviating the technical problem in the existing technology that the modal working mode switching cannot meet the needs of fine cutting and high-efficiency cutting for different surgical procedures. BRIEF DESCRIPTION OF THE DRAWINGS

[0040] In order to more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the specific embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0041] Figure 1 A schematic diagram of the appearance and structure of an ophthalmic surgical probe device provided by an embodiment of the present invention;

[0042] Figure 2 for Figure 1 A schematic cross-sectional view of an ophthalmic surgical probe device provided in an embodiment;

[0043] Figure 3 A schematic diagram of the explosion structure of the housing of an ophthalmic surgical probe device provided by an embodiment of the present invention;

[0044] Figure 4 A schematic diagram of the exploded structure of the adjustment unit of the ophthalmic surgical probe device provided by an embodiment of the present invention;

[0045] Figure 5 A schematic diagram of the appearance and structure of another embodiment of an ophthalmic surgical probe device provided by an embodiment of the present invention;

[0046] Figure 6for Figure 5 A schematic cross-sectional view of an ophthalmic surgical probe device provided in an embodiment;

[0047] Figure 7 A schematic cross-sectional view of the cutting outer needle and the cutting inner needle of the ophthalmic surgical probe device provided by an embodiment of the present invention in the initial state in fine mode;

[0048] Figure 8 A schematic cross-sectional view of the outer cutting needle and the inner cutting needle of the ophthalmic surgical probe device provided by an embodiment of the present invention in a working state in a fine mode;

[0049] Figure 9 A schematic cross-sectional view of the cutting outer needle and the cutting inner needle of the ophthalmic surgical probe device provided by an embodiment of the present invention in the initial state in the high-efficiency mode;

[0050] Figure 10 A schematic cross-sectional view of the outer cutting needle and the inner cutting needle of the ophthalmic surgical probe device provided by an embodiment of the present invention, when operating in a high-efficiency mode;

[0051] Figure 11 A schematic cross-sectional view of another embodiment of the cutting outer needle and the cutting inner needle of the ophthalmic surgical probe device provided by an embodiment of the present invention in the initial state in the high-efficiency mode;

[0052] Figure 12 for Figure 11 A schematic cross-sectional view of the outer cutting needle and the inner cutting needle of the ophthalmic surgical probe device provided in an embodiment, when operating in a high-efficiency mode;

[0053] Figure 13 A schematic cross-sectional view of another embodiment of the present invention showing the outer cutting needle and the inner cutting needle of the ophthalmic surgical probe device in an initial state in a high-efficiency mode;

[0054] Figure 14 for Figure 13 A schematic cross-sectional structure diagram of a cutting outer needle and a cutting inner needle of an ophthalmic surgical probe device provided in an embodiment, when the cutting outer needle and the inner needle are working in a high-efficiency mode.

[0055] Icons: 100-cutting unit; 110-cutting outer needle; 111-first inner notch; 112-second inner notch; 113-first outer needle edge; 114-second outer needle edge; 115-third outer needle edge; 116-fourth outer needle edge; 117-blocking end; 120-cutting inner needle; 121-third inner notch; 122-fourth inner notch; 123-fifth inner notch; 124-first inner needle edge; 125-second inner needle edge; 126-third inner needle edge; 127-fourth inner needle edge; 128-fifth inner needle edge; 200-adjusting unit; 210-modal adjuster; 2 20-limiting slider; 230-modal adjustment end; 240-driving bevel gear; 250-driven bevel gear; 260-rotating bearing; 300-housing; 310-front shell; 311-third gas channel; 320-rear shell; 321-first gas channel; 322-second gas channel; 323-liquid outlet; 324-first air inlet; 325-second air inlet; 330-front cavity; 340-rear cavity; 350-rotating groove; 400-driving unit; 410-driving shaft; 420-sealing diaphragm; 421-through hole; 430-connecting piece; 500-modal indication mechanism. DETAILED DESCRIPTION

[0056] The following will clearly and completely describe the technical solutions of the present invention in conjunction with the embodiments. Obviously, the embodiments described are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0057] like Figures 1-14 As shown, an ophthalmic surgical probe device provided in this embodiment includes: a cutting unit 100, an adjustment unit 200, a shell 300 and a driving unit 400; the cutting unit 100 includes a cutting outer needle 110 and a cutting inner needle 120, the cutting outer needle 110 has at least two first openings on the same side, and the edges of the first openings form a cutting edge, the two opposite sides of the cutting inner needle 120 each have at least one second opening, and the edges of the second openings form a cutting edge, and the cutting outer needle 110 is sleeved on the outside of the cutting inner needle 120; the shell 300 is connected to the adjustment unit 200 and the driving unit 400 respectively, the adjustment unit 200 is connected to the cutting outer needle 110, and the adjustment unit 200 is used to drive the cutting outer needle 110 to rotate relative to the cutting inner needle 120 to adjust the position correspondence or misalignment of the first opening and the second opening; the driving unit 400 is connected to the cutting inner needle 120, and the driving unit 400 is used to drive the cutting inner needle 120 to move back and forth relative to the cutting outer needle 110 to cut the intraocular tissue through the incision formed by the first opening and the second opening.

[0058] It should be noted that the ophthalmic surgical probe device provided in this embodiment can realize switching of different modes for different stages of the ophthalmic surgery process; specifically, the shell 300 can provide fixing and holding functions, the driving unit 400 can be connected to the cutting inner needle 120 in a transmission manner, and the cutting inner needle 120 can move back and forth along the axial direction of the cutting outer needle 110 under the driving force of the driving unit 400; further, the cutting points of the cutting outer needle 110 and the cutting inner needle 120 are corresponding points of the first opening and the second opening, wherein the cutting outer needle 110 is connected to the adjustment unit 200, and the adjustment unit 200 can make the cutting outer needle 110 rotate at any angle, that is, the adjustment unit 200 can adjust the direction of multiple first openings, so that the different first openings and corresponding second openings between the cutting outer needle 110 and the cutting inner needle 120 form a corresponding arrangement or staggered arrangement, so as to realize switching between, for example, a fine mode or an efficient mode, satisfying the complex and efficient operations under different stages and conditions during the operation, and further improving the safety and efficiency of the operation.

[0059] The ophthalmic surgical probe device provided in this embodiment includes: a cutting unit 100, an adjusting unit 200, a shell 300 and a driving unit 400; the cutting unit 100 includes a cutting outer needle 110 and a cutting inner needle 120, the cutting outer needle 110 has at least two first openings on the same side, and the edges of the first openings form a cutting edge, the two opposite sides of the cutting inner needle 120 each have at least one second opening, and the edges of the second openings form a cutting edge, and the cutting outer needle 110 is sleeved on the outside of the cutting inner needle 120; the shell 300 is connected to the adjusting unit 200 and the driving unit 400 respectively, the adjusting unit 200 is connected to the cutting outer needle 110, and the adjusting unit 200 is used to drive the cutting outer needle 110 to rotate relative to the cutting inner needle 120 to adjust the first opening and the second opening. The positions of the two openings correspond or are staggered; the driving unit 400 is connected to the cutting inner needle 120, and the driving unit 400 is used to drive the cutting inner needle 120 to move back and forth relative to the cutting outer needle 110, so as to cut the intraocular tissue through the incision formed by the first opening and the second opening; through the control and adjustment of the adjustment unit 200, the cutting outer needle 110 and the cutting inner needle 120 can be arranged in correspondence with each other at different opening positions, so as to meet the fine operation of higher cutting rate and lower suction flow in the fine cutting state, and meet the high-efficiency operation of lower cutting efficiency and higher suction flow in the high-efficiency cutting state, thereby alleviating the technical problem in the prior art that the modal working mode switching cannot meet the needs of fine cutting and high-efficiency cutting for different surgical procedures.

[0060] On the basis of the above embodiments, further, in a preferred embodiment of the present invention, the driving unit 400 includes a driving shaft 410, a sealing diaphragm 420 and a connecting piece 430; the driving shaft 410 is connected to the sealing diaphragm 420, and the driving shaft 410 is connected to the cutting inner needle 120 through the connecting piece 430; the sealing diaphragm 420 is located inside the shell 300, and the sealing diaphragm 420 is sealed and slidably connected to the inner wall of the shell 300, so that the shell 300 forms a front cavity 330 and a rear cavity 340, and the front cavity 330 and the rear cavity 340 are used to alternately input or output pressure fluid to control the sealing diaphragm 420 to move back and forth along the shell 300 through the pressure fluid, and the sealing diaphragm 420 drives the cutting inner needle 120 to move back and forth along the axial direction through the driving shaft 410 and the connecting piece 430 in turn.

[0061] In this embodiment, the sealing diaphragm 420 is slidably sealed with the inner wall of the shell 300 so as to form an independent front cavity 330 and rear cavity 340 inside the shell 300. The drive shaft 410 is fixedly connected to the sealing diaphragm 420. The drive shaft 410 can be located at the center of the sealing diaphragm 420. The end of the drive shaft 410 is connected to the connecting piece 430. The drive shaft 410 is fixedly connected to the cutting inner needle 120 by the connecting piece 430. Since the sealing diaphragm 420 is slidably sealed with the interior of the shell 300, when pressure supply and pressure relief operations are alternately performed to the front cavity 330 and the rear cavity 340, for example, when pressure fluid is input into the front cavity 330, the rear cavity 340 outputs pressure fluid at this time, or when pressure fluid is input into the rear cavity 340, the front cavity 330 outputs pressure fluid at this time. The alternating delivery of pressure fluid is used to push the sealing diaphragm 420 to move or deform, so as to synchronously drive the cutting inner needle 120 to reciprocate through the drive shaft 410 and the connecting piece 430.

[0062] Optionally, a seal may be provided between the drive shaft 410 and the front shell 310 and the rear shell 320 described below to prevent gas leakage; the connector 430 connects the drive shaft 410 and the cutting inner needle 120 respectively, and the connector 430 may have a reducing step, may be a plastic part with one step, or may be a metal stamping part with multiple steps, or may be fixedly connected using adhesives such as glue and filler.

[0063] In a preferred embodiment of the present invention, the shell 300 includes a front shell 310 and a rear shell 320; a first gas channel 321 and a second gas channel 322 are provided on the rear shell 320, a third gas channel 311 is provided on the front shell 310, and a through hole 421 is provided on the sealing diaphragm 420. The first gas channel 321 is connected to the front cavity 330 through the through hole 421 and the third gas channel 311 in sequence, and the second gas channel 322 is connected to the rear cavity 340; a liquid outlet 323 is provided through the rear shell 320, and the cutting inner needle 120 is connected to the liquid outlet 323 through the drive shaft 410, and the liquid outlet 323 is connected to the external negative pressure source pipeline so that the liquid and tissue cut in the cutting inner needle 120 can flow into the external negative pressure source pipeline through the drive shaft 410 and the liquid outlet 323.

[0064] In this embodiment, the front shell 310 and the rear shell 320 can be connected by snap-fitting, and three inlets and outlets can be provided on the rear shell 320, namely a first gas channel 321, a second gas channel 322 and a liquid outlet 323. The first gas channel 321 can adopt an inclined gas channel, and the third gas channel 311 can adopt a C-shaped gas channel. The first gas channel 321 and the third gas channel 311 are arranged correspondingly, and a through hole 421 is provided on the sealing diaphragm 420 corresponding to the first gas channel 321 and the third gas channel 311. The third gas channel 311 forms a gas supply channel to the front cavity 330, and the second gas channel 322 can adopt a straight gas channel. The second gas channel 322 forms a gas supply channel to the rear cavity 340, so as to realize the gas delivery path to the front cavity 330 and the rear cavity 340 respectively at the position of the rear shell 320, meeting the input and output of air pressure; the liquid outlet 323 can be connected to the internal channel of the cutting inner needle 120 through the through-hole formed by the drive shaft 410 and the connecting piece 430, and the liquid outlet 323 can be used to meet the discharge of broken tissue and liquid cut during the operation.

[0065] In a preferred embodiment of the present invention, a first air inlet 324 and a second air inlet 325 are provided at one end of the rear shell 320 away from the front shell 310, the first air inlet 324 is connected to the first gas channel 321, the second air inlet 325 is connected to the second gas channel 322, the first air inlet 324 and the second air inlet 325 are connected to an external ventilation pipe, and the external ventilation pipe is used to alternately deliver pressurized gas to the first air inlet 324 and the second air inlet 325, and the second air inlet 325 and the first air inlet 324 are used to alternately exhaust gas to the external ventilation pipe, so that the sealing diaphragm 420 moves back and forth along the direction from the rear cavity 340 to the front cavity 330, or along the direction from the front cavity 330 to the rear cavity 340.

[0066] In this embodiment, the external ventilation line can allow compressed air or nitrogen to enter the first air inlet 324 through the line, and then pass through the first gas channel 321, the through hole 421, and the third gas channel 311 in sequence to reach the front cavity 330, that is, to reach the front side of the sealing diaphragm 420, pushing the sealing diaphragm 420 to move backward or deform, thereby driving the drive shaft 410 to move backward. The external ventilation line can allow compressed air or nitrogen to enter the second air inlet 325 through the line, and pass through the second gas channel 322 to reach the rear cavity 340, that is, to reach the rear side of the sealing diaphragm 420, pushing the sealing diaphragm 420 to move forward or deform, thereby driving the drive shaft 410 to move forward. The external ventilation line alternately vents air to the first air inlet 324 and the second air inlet 325, while exhausting air from opposite sides, thereby achieving reciprocating motion of the drive shaft 410.

[0067] like Figure 1 and Figure 4 As shown, in a preferred embodiment of the present invention, the adjustment unit 200 includes a modal adjuster 210 and a limiting slider 220; one side of the modal adjuster 210 is connected to the limiting slider 220, the modal adjuster 210 is connected to the cutting outer needle 110, and the modal adjuster 210 is rotatably connected to the shell 300, and a plurality of rotation grooves 350 are provided at one end of the shell 300 corresponding to the modal adjuster 210, and the limiting slider 220 can be engaged with any one of the rotation grooves 350 to control the rotation angle of the cutting outer needle 110 through the modal adjuster 210.

[0068] In this embodiment, the shell 300 has a gripping function and is generally ergonomically designed; a mode indication mechanism 500 is provided on the exterior surface of the shell 300, wherein the mode indication mechanism 500 can be a mode indication mark, the mode adjuster 210 is rotatably connected to the shell 300, and the center of the mode adjuster 210 has a central channel, the cutting inner needle 120 passes through the mode adjuster 210 through the central channel, and the cutting inner needle 120 can extend into the interior of the shell 300 through the central through hole at the end of the shell 300, so as to be connected to the connector 430 inside the shell 300; further Specifically, the central channel of the mode regulator 210 can be fixedly connected to the cutting outer needle 110. When the mode regulator 210 rotates relative to the shell 300, it can synchronously drive the cutting outer needle 110 to rotate, thereby realizing switching between different mode states; further, in order to ensure the stability of the mode regulator 210 and the shell 300 during rotation, a limiting slider 220 is provided at the end of the mode regulator 210, and the limiting slider 220 can be clamped and fixed with the rotating groove 350 at the end of the shell 300 to ensure the stability of the cutting outer needle 110 in the corresponding mode.

[0069] Optionally, a support plate may be provided at the end of the housing 300 , with two rotation grooves 350 along both ends of the support plate. The two rotation grooves 350 can satisfy the fixation of the cutting outer needle 110 in the fine mode and the high-efficiency mode.

[0070] like Figure 5-Figure 6 As shown, in a preferred embodiment of the present invention, the adjustment unit 200 includes a modal adjustment end 230, a driving bevel gear 240, a driven bevel gear 250 and a rotary bearing 260; the driving bevel gear 240 and the driven bevel gear 250 are both arranged inside the housing 300, the rotary bearing 260 is rotatably connected to the housing 300, and the cutting outer needle 110 is connected to the rotary bearing 260 and the driven bevel gear 250 in sequence. The modal adjustment end 230 passes through the side wall of the housing 300 and is transmission-connected to the driving bevel gear 240. The modal adjustment end 230 is used to drive the driven bevel gear 250 to rotate through the driving bevel gear 240, so as to drive the cutting outer needle 110 to rotate relative to the housing 300 based on the rotary bearing 260.

[0071] In this embodiment, the adjustment unit 200 adopts another adjustment structure. Specifically, the modal adjustment end 230 can adopt an adjustment knob, which is fixedly connected to the active bevel gear 240 through a connecting rod. The active bevel gear 240 and the driven bevel gear 250 are matched with each other. The cutting outer needle 110 is fixedly connected to the driven bevel gear 250, and the cutting outer needle 110 is connected to the end of the shell 300 through a rotating bearing 260. When the adjustment knob is manually turned, the horizontal rotation of the knob can be converted into vertical rotation, thereby realizing the cutting mode conversion; in addition, the adjustment unit 200 can adopt a worm gear or other gear meshing rotation or cam structure.

[0072] In a preferred embodiment of the present invention, a mode indicating mechanism 500 is provided on the housing 300 ; the mode indicating mechanism 500 is arranged corresponding to the adjustment unit 200 to display the mode mode after the adjustment unit 200 drives the cutting outer needle 110 to rotate.

[0073] In this embodiment, when the adjustment unit 200 adopts a mode adjuster 210, the mode indication mechanism 500 can adopt a scale bar. A first scale bar is provided on the mode adjuster 210, and a second scale bar is provided at a corresponding position of the shell 300. The corresponding arrangement of the first scale bar and the second scale bar can be used to know the current modal mode; when the adjustment unit 200 adopts a mode adjustment end 230, the mode indication mechanism 500 can adopt a pointer. The pointer is connected to the mode adjustment end 230, and the shell 300 has a dial corresponding to the pointer. When the mode adjustment end 230 drives the pointer to move to a certain position on the dial, the current modal mode can be displayed.

[0074] Optionally, the mode indicator mechanism 500 displays at least two modes, such as a fine mode and an efficient mode. Typically, in the fine mode, the cutting unit 100 operates in a dual-incision high-speed cutting probe mode, suitable for delicate operations near the retina, reducing traction on the retina and thereby improving safety. The efficient mode is switched via the adjustment unit 200. While maintaining the inner cutting needle 120 stationary, the outer cutting needle 110 is rotated, typically 180°. This significantly increases both the cutting rate and the suction flow rate of the cutting unit 100, making it suitable for efficient vitreous cutting in the central area of ​​the eye.

[0075] like Figure 7-10As shown, in a preferred embodiment of the present invention, the first opening includes a first inner recess 111 and a second inner recess 112; the second opening includes a third inner recess 121 and a fourth inner recess 122; the end of the cutting outer needle 110 away from the shell 300 has a blocking end 117, the first inner recess 111 and the second inner recess 112 are located on the same side of the cutting outer needle 110, and the first inner recess 111 is close to the blocking end 117 of the cutting outer needle 110; the third inner recess 121 and the fourth inner recess 122 are respectively located on opposite sides of the cutting inner needle 120; the adjustment unit 200 has a fine mode and an efficient mode: in the fine mode The third inner recess 121 is arranged corresponding to the first inner recess 111, and the fourth inner recess 122 is arranged away from the second inner recess 112. The first inner recess 111 and the cutting inner needle 120 form a first liquid suction channel, and the second inner recess 112 is in a closed state; the side wall of the first inner recess 111 forms a first outer needle cutting edge 113 and a second outer needle cutting edge 114, the end edge of the cutting inner needle 120 forms a first inner needle cutting edge 124, and the edge of the third inner recess 121 close to the blocking end 117 forms a second inner needle cutting edge 125. When the cutting inner needle 120 moves in the direction toward the blocking end 117, the first inner needle cutting edge 1 24 and the first outer needle edge 113 form a cutting point. When the cutting inner needle 120 moves in the direction away from the blocking end 117, the second inner needle edge 125 and the second outer needle edge 114 form a cutting point. In the high-efficiency mode, the fourth inner recess 122 is arranged corresponding to the second inner recess 112, and the third inner recess 121 is arranged away from the first inner recess 111. The first inner recess 111 and the cutting inner needle 120 form a first liquid suction channel, and the second inner recess 112 forms a second liquid suction channel with the cutting inner needle 120 through the fourth inner recess 122. The side wall of the first inner recess 111 forms the second liquid suction channel near the edge of the blocking end 117. An outer needle cutting edge 113, the edge of the side wall of the second inner recess 112 away from the blocking end 117 forms a third outer needle cutting edge 115, the end edge of the cutting inner needle 120 forms a first inner needle cutting edge 124, and the edge of the fourth inner recess 122 close to the blocking end 117 forms a third inner needle cutting edge 126. When the cutting inner needle 120 moves in the direction toward the blocking end 117, the first inner needle cutting edge 124 and the first outer needle cutting edge 113 form a cutting point. When the cutting inner needle 120 moves in the direction away from the blocking end 117 of the cutting outer needle 110, the third inner needle cutting edge 126 and the third outer needle cutting edge 115 form a cutting point.

[0076] like Figure 7 and Figure 8As shown, in this embodiment, it is the working state in the fine mode, the two first openings formed by the first inner recess 111 and the second inner recess 112, and the two second openings formed by the third inner recess 121 and the fourth inner recess 122. At this time, the two opposite side walls of the first inner recess 111 of the cutting outer needle 110 form the first outer needle cutting edge 113 and the second outer needle cutting edge 114, and the cutting inner needle 120 has the first inner needle cutting edge 124 and the second inner needle cutting edge 125; during the working process, the cutting outer needle 110 is fixed, and when the cutting inner needle 120 moves to the front side, the first inner needle cutting edge 124 and the first outer needle cutting edge form a shearing effect to cut the intraocular tissue; when the cutting inner needle 120 moves to the rear side, the second inner needle cutting edge 125 and the second outer needle cutting edge 114 form a shearing effect to cut the intraocular tissue. Therefore, two shearing actions are generated in each movement cycle; the shredded tissue and intraocular fluid enter the interior of the cutting inner needle 120 through the first inner recess 111, and further flow out through the drive shaft 410 and the liquid outlet 323. At this time, the second inner recess 112 of the cutting outer needle 110 and the fourth inner recess 122 of the cutting inner needle 120 are always maintained in a normally closed state and do not function in this mode.

[0077] like Figure 9 and Figure 10 As shown, in this embodiment, the operation is in high-efficiency mode. The first inner notch 111 and the second inner notch 112 form two first openings, and the third inner notch 121 and the fourth inner notch 122 form two second openings. At this time, the side wall of the first inner notch 111 of the cutting outer needle 110 near the blocking end 117 forms a first outer needle cutting edge 113, and the side wall of the second inner notch 112 away from the blocking end 117 forms a third outer needle cutting edge 115. The cutting inner needle 120 has a first inner needle cutting edge 124 and a third inner needle cutting edge 126. During operation, the cutting outer needle 110 is stationary. When the cutting inner needle 120 moves forward, the third inner needle cutting edge 126 forms a shearing action with the first outer needle cutting edge 113, cutting the intraocular tissue. When the cutting inner needle 120 moves backward, the third inner needle cutting edge 126 forms a shearing action with the third outer needle cutting edge 115, cutting the intraocular tissue. Therefore, two shearing actions are generated in each movement cycle. In the high-efficiency mode, the first inner recess 111 and the second inner recess 112 of the cutting outer needle 110 are alternately maintained in an open state, so that the suction flow is increased by at least two times; in addition, the size of the second inner recess 112 and the fourth inner recess 122 can be larger than the first inner recess 111 and the third inner recess 121, so that the suction flow at this location is larger and the efficiency is higher.

[0078] like Figure 11-12As shown, in a preferred embodiment of the present invention, the first opening includes a first inner recess 111 and a second inner recess 112; the second opening includes a third inner recess 121, a fourth inner recess 122 and a fifth inner recess 123; the end of the cutting outer needle 110 away from the shell 300 has a blocking end 117, the first inner recess 111 and the second inner recess 112 are located on the same side of the cutting outer needle 110, and the first inner recess 111 is close to the blocking end 117 of the cutting outer needle 110; the third inner recess 121 and the fourth inner recess 122 are respectively located on opposite sides of the cutting inner needle 120, the fifth inner recess 123 and the fourth inner recess 122 are located on the same side of the cutting inner needle 120, and the fifth inner recess 123 and the fourth inner recess 122 are arranged at intervals; the adjusting unit 20 0 has a fine mode and an efficient mode: in the fine mode, the third inner recess 121 is arranged corresponding to the first inner recess 111, the fourth inner recess 122 and the fifth inner recess 123 are arranged away from the second inner recess 112, the first inner recess 111 and the cutting inner needle 120 form a first liquid suction channel, and the second inner recess 112 is in a closed state; the side wall of the first inner recess 111 forms a first outer needle cutting edge 113 and a second outer needle cutting edge 114, the end edge of the cutting inner needle 120 forms a first inner needle cutting edge 124, and the edge of the third inner recess 121 close to the blocking end 117 forms a second inner needle cutting edge 125. When the cutting inner needle 120 moves in the direction toward the blocking end 117, the first inner needle cutting edge 124 and the first outer needle cutting edge 113 form a liquid suction channel. Cutting point, when the cutting inner needle 120 moves in the direction away from the blocking end 117, the second inner needle cutting edge 125 and the second outer needle cutting edge 114 form a cutting point; in the high-efficiency mode, the fourth inner recess 122 and the fifth inner recess 123 are arranged corresponding to the second inner recess 112, and the third inner recess 121 is arranged away from the first inner recess 111. The first inner recess 111 and the cutting inner needle 120 form a first suction channel, and the second inner recess 112 forms a second suction channel with the cutting inner needle 120 through the fourth inner recess 122 and the fifth inner recess 123; the side wall of the first inner recess 111 close to the edge of the blocking end 117 forms the first outer needle cutting edge 113, and the side wall of the second inner recess 112 forms the third outer needle cutting edge 115 and the fourth outer needle cutting edge 116, the end edge of the cutting inner needle 120 forms a first inner needle cutting edge 124, the edge of the fourth inner recess 122 near the blocking end 117 forms a third inner needle cutting edge 126, and the side wall of the fifth inner recess 123 forms a fourth inner needle cutting edge 127 and a fifth inner needle cutting edge 128. When the cutting inner needle 120 moves in the direction toward the blocking end 117, the first inner needle cutting edge 124 and the first outer needle cutting edge 113 form a cutting point, and the fifth inner needle cutting edge 128 and the fourth outer needle cutting edge 116 form a cutting point. When the cutting inner needle 120 moves in the direction away from the blocking end 117 of the cutting outer needle 110, the third inner needle cutting edge 126 and the third outer needle cutting edge 115 form a cutting point, and the fourth inner needle cutting edge 127 and the third outer needle cutting edge 115 form a cutting point.

[0079] It should be noted that, since the working state of this embodiment in the fine mode is completely consistent with that of the above embodiment in the fine mode, the working state in the fine mode is not described in detail here.

[0080] like Figure 11 and Figure 12 As shown, in this embodiment, it is a working state in the high-efficiency mode, the first inner recess 111 and the second inner recess 112 form two first openings, and the third inner recess 121, the fourth inner recess 122 and the fifth inner recess 123 form three second openings. At this time, the side wall of the first inner recess 111 of the cutting outer needle 110 close to the blocking end 117 forms the first outer needle cutting edge 113, the opposite sides of the side wall of the second inner recess 112 form the third outer needle cutting edge 115 and the fourth outer needle cutting edge 116, and the cutting inner needle 120 has the first inner needle cutting edge 124, the third inner needle cutting edge 125 and the fourth outer needle cutting edge 116. Inner needle cutting edge 126, fourth inner needle cutting edge 127 and fifth inner needle cutting edge 128; during operation, the cutting outer needle 110 is fixed, and when the cutting inner needle 120 moves forward, the first inner needle cutting edge 124 and the first outer needle cutting edge 113, the fourth inner needle cutting edge 127 and the fourth outer needle cutting edge 116 form a shearing effect to cut the intraocular tissue; when the cutting inner needle 120 moves backward, the third inner needle cutting edge 126 and the third outer needle cutting edge 115, and the fifth inner needle cutting edge 128 and the third outer needle cutting edge 115 form a shearing effect to cut the intraocular tissue. Therefore, 4 shearing effects are generated in each movement cycle. For example, the cutting unit 100 performs 10,000 reciprocating cycles per minute, and the cutting rate can reach 4W times / minute. In the high-efficiency mode, the first inner recess 111 and the second inner recess 112 of the cutting outer needle 110 are alternately maintained in an open state, so that the suction flow rate is increased by at least two times. In addition, the sizes of the fourth inner recess 122 and the fifth inner recess 123 corresponding to the second inner recess 112 can be larger than the first inner recess 111 and the third inner recess 121, thereby making the suction flow rate at this location larger and more efficient.

[0081] like Figure 13-14As shown, in a preferred embodiment of the present invention, the first opening includes a first inner recess 111 and a second inner recess 112; the second opening includes a third inner recess 121, a fourth inner recess 122 and a fifth inner recess 123; the first opening includes a first inner recess 111 and a second inner recess 112; the second opening includes a third inner recess 121, a fourth inner recess 122 and a fifth inner recess 123; the end of the cutting outer needle 110 away from the shell 300 has a blocking end 117, the first inner recess 111 and the second inner recess 112 are located on the same side of the cutting outer needle 110, and the first inner recess 111 is close to the blocking end 117 of the cutting outer needle 110; the third inner recess 121 and the fourth inner recess 122 are respectively Located on the two opposite sides of the cutting inner needle 120, there are multiple fifth inner recesses 123, multiple fifth inner recesses 123 and the fourth inner recess 122 are located on the same side of the cutting inner needle 120, and multiple fifth inner recesses 123 are arranged at intervals, and the fourth inner recess 122 and the adjacent fifth inner recess 123 are arranged at intervals; there are multiple second inner recesses 112, and the number of second inner recesses 112 corresponds to the number of fifth inner recesses 123 one by one; wherein the number of first openings is n, and the number of second openings is n+1; the adjustment unit 200 has a fine mode and an efficient mode: in the fine mode, the third inner recess 121 is arranged corresponding to the first inner recess 111, and the fourth inner recess 122 and The plurality of fifth inner recesses 123 are all arranged in a direction away from the second inner recess 112, the first inner recess 111 and the cutting inner needle 120 form a first liquid suction channel, and the second inner recess 112 is in a closed state; the side wall of the first inner recess 111 forms a first outer needle cutting edge 113 and a second outer needle cutting edge 114, the end edge of the cutting inner needle 120 forms a first inner needle cutting edge 124, and the edge of the third inner recess 121 close to the blocking end 117 forms a second inner needle cutting edge 125. When the cutting inner needle 120 moves in the direction toward the blocking end 117, the first inner needle cutting edge 124 and the first outer needle cutting edge 113 form a cutting point, and when the cutting inner needle 120 moves in the direction away from the blocking end 117, the second inner needle cutting edge 125 The needle cutting edge 125 and the second outer needle cutting edge 114 form a cutting point; in the high-efficiency mode, the fourth inner recess 122 and the fifth inner recess 123 are arranged corresponding to the second inner recess 112, the third inner recess 121 is arranged away from the first inner recess 111, the first inner recess 111 and the cutting inner needle 120 form a first liquid suction channel, and multiple second inner recesses 112 form a second liquid suction channel with the cutting inner needle 120 through the fourth inner recess 122 and the multiple fifth inner recesses 123; wherein, the cutting inner needle 120 reciprocates along the cutting outer needle 110 for one cycle, and the number of cuttings generated by the cutting inner needle 120 and the cutting outer needle 110 in each cycle is S=2*(1+2+…+n)+1 times.

[0082] It should be noted that, since the working state of this embodiment in the fine mode is completely consistent with that of the above embodiment in the fine mode, the working state in the fine mode is not described in detail here.

[0083] like Figure 13 and Figure 14 As shown, in this embodiment, the working state is in high-efficiency mode. In order to improve the cutting rate, the side of the cutting inner needle 120 can have multiple second openings, and similarly, the side of the cutting outer needle 110 can also have multiple first openings. Assuming that the number of first openings for cutting the outer needle 110 is n, and the number of second openings for cutting the inner needle 120 is n+1, the number of cutting times generated in each cycle is S=2*(1+2+…+n)+1 times. For example: if the number of first openings for cutting the outer needle 110 is n=3, then each movement of the cutting inner needle 120 will produce 13 relative shearing effects, thereby greatly improving the cutting efficiency of the cutting unit 100; in addition, as the cutting efficiency improves, the number of first openings for cutting the outer needle 110 can be increased or the sizes of the first openings and second openings of the cutting inner needle 120 and the cutting outer needle 110 can be increased to improve the suction efficiency.

[0084] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the above embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the above embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. An ophthalmic surgical probe device, characterized in that: include: A cutting unit (100), an adjusting unit (200), a housing (300) and a driving unit (400); The cutting unit (100) comprises an outer cutting needle (110) and an inner cutting needle (120), wherein the outer cutting needle (110) has at least two first openings on the same side thereof, and the edges of the first openings form cutting edges, and the two opposite sides of the inner cutting needle (120) each have at least one second opening, and the edges of the second openings form cutting edges, and the outer cutting needle (110) is sleeved on the outside of the inner cutting needle (120); The housing (300) is connected to the adjustment unit (200) and the driving unit (400) respectively. The adjustment unit (200) is connected to the outer cutting needle (110). The adjustment unit (200) is used to drive the outer cutting needle (110) to rotate relative to the inner cutting needle (120) to adjust the position of the first opening and the second opening to correspond or be misaligned. The driving unit (400) is connected to the inner cutting needle (120), and the driving unit (400) is used to drive the inner cutting needle (120) to move back and forth relative to the outer cutting needle (110), so as to cut the intraocular tissue through the incision formed by the first opening and the second opening; The adjustment unit (200) comprises a modal adjustment end (230), a driving bevel gear (240), a driven bevel gear (250), and a rotary bearing (260); The active bevel gear (240) and the driven bevel gear (250) are both arranged inside the housing (300), the rotary bearing (260) is rotatably connected to the housing (300), the cutting outer needle (110) is sequentially connected to the rotary bearing (260) and the driven bevel gear (250), the modal adjustment end (230) passes through the side wall of the housing (300) and is transmission-connected to the active bevel gear (240), and the modal adjustment end (230) is used to drive the driven bevel gear (250) to rotate through the active bevel gear (240), so as to drive the cutting outer needle (110) to rotate relative to the housing (300) based on the rotary bearing (260); The modal adjustment end (230) adopts an adjustment knob; The first opening comprises a first inner recess (111) and a second inner recess (112); The regulating unit (200) has a fine mode and an efficient mode: In the fine mode, the second inner recess (112) of the cutting outer needle (110) is always maintained in a normally closed state; In the high-efficiency mode, the first inner recess (111) and the second inner recess (112) of the cutting outer needle (110) are alternately maintained in an open state; Compared with the fine mode, the efficient mode has a larger suction flow rate.

2. The ophthalmic surgical probe device according to claim 1, characterized in that: The driving unit (400) comprises a driving shaft (410), a sealing diaphragm (420) and a connecting piece (430); The drive shaft (410) is connected to the sealing diaphragm (420), and the drive shaft (410) is connected to the cutting inner needle (120) via the connecting piece (430); The sealing diaphragm (420) is located inside the shell (300), and the sealing diaphragm (420) is sealingly and slidingly connected to the inner wall of the shell (300), so that the shell (300) forms a front cavity (330) and a rear cavity (340), and the front cavity (330) and the rear cavity (340) are used to alternately input or output pressure fluid to control the sealing diaphragm (420) to move back and forth along the shell (300) through the pressure fluid, and the sealing diaphragm (420) drives the cutting inner needle (120) to move back and forth along the axial direction through the driving shaft (410) and the connecting member (430) in turn.

3. The ophthalmic surgical probe device according to claim 2, characterized in that: The housing (300) comprises a front housing (310) and a rear housing (320); The rear shell (320) is provided with a first gas channel (321) and a second gas channel (322), the front shell (310) is provided with a third gas channel (311), and the sealing diaphragm (420) is provided with a through hole (421), the first gas channel (321) is connected to the front cavity (330) through the through hole (421) and the third gas channel (311) in sequence, and the second gas channel (322) is connected to the rear cavity (340); The rear shell (320) is provided with a liquid outlet (323) therethrough, the cutting inner needle (120) is connected to the liquid outlet (323) via the drive shaft (410), and the liquid outlet (323) is connected to an external negative pressure source pipeline so that the liquid and tissue cut from the cutting inner needle (120) can flow into the external negative pressure source pipeline via the drive shaft (410) and the liquid outlet (323).

4. The ophthalmic surgical probe device according to claim 3, characterized in that: A first air inlet (324) and a second air inlet (325) are provided at one end of the rear shell (320) away from the front shell (310), the first air inlet (324) being in communication with the first gas channel (321), the second air inlet (325) being in communication with the second gas channel (322), the first air inlet (324) and the second air inlet (325) being in communication with an external ventilation pipeline, the external ventilation pipeline being used to alternately deliver pressurized gas to the first air inlet (324) and the second air inlet (325), and the second air inlet (325) and the first air inlet (324) being used to alternately exhaust gas to the external ventilation pipe, so that the sealing diaphragm (420) moves back and forth along the direction from the rear cavity (340) to the front cavity (330), or along the direction from the front cavity (330) to the rear cavity (340).

5. The ophthalmic surgical probe device according to claim 1, wherein: The housing (300) is provided with a mode indicating mechanism (500); The mode indicating mechanism (500) is arranged corresponding to the adjusting unit (200) to display the mode mode after the adjusting unit (200) drives the cutting outer needle (110) to rotate.

6. The ophthalmic surgical probe device according to any one of claims 1 to 5, characterized in that: The second opening comprises a third inner recess (121) and a fourth inner recess (122); The cutting outer needle (110) has a blocking end (117) at one end away from the housing (300); the first inner recess (111) and the second inner recess (112) are located on the same side of the cutting outer needle (110), and the first inner recess (111) is close to the blocking end (117) of the cutting outer needle (110); the third inner recess (121) and the fourth inner recess (122) are respectively located on opposite sides of the cutting inner needle (120); In the fine mode, the third inner recess (121) is arranged corresponding to the first inner recess (111), the fourth inner recess (122) is arranged away from the second inner recess (112), the first inner recess (111) and the cutting inner needle (120) form a first liquid suction channel, and the second inner recess (112) is in a closed state; the side wall of the first inner recess (111) forms a first outer needle cutting edge (113) and a second outer needle cutting edge (114), and the end edge of the cutting inner needle (120) forms a first inner The cutting inner needle (120) is provided with a second inner needle cutting edge (124), wherein the edge of the third inner recess (121) is close to the blocking end (117) to form a second inner needle cutting edge (125); when the cutting inner needle (120) moves in a direction toward the blocking end (117), the first inner needle cutting edge (124) and the first outer needle cutting edge (113) form a cutting point; when the cutting inner needle (120) moves in a direction away from the blocking end (117), the second inner needle cutting edge (125) and the second outer needle cutting edge (114) form a cutting point; In the high-efficiency mode, the fourth inner recess (122) and the second inner recess (112) are arranged correspondingly, the third inner recess (121) and the first inner recess (111) are arranged in opposition, the first inner recess (111) and the cutting inner needle (120) form a first liquid suction channel, and the second inner recess (112) and the cutting inner needle (120) form a second liquid suction channel through the fourth inner recess (122); the side wall of the first inner recess (111) is close to the edge of the blocking end (117) to form a first outer needle cutting edge (113), and the side wall of the second inner recess (112) is away from the edge of the blocking end (117) to form a second outer needle cutting edge (113). The third outer needle cutting edge (115) is formed by the end edge of the cutting inner needle (120) forming the first inner needle cutting edge (124), and the edge of the fourth inner recess (122) close to the blocking end (117) forms the third inner needle cutting edge (126). When the cutting inner needle (120) moves in the direction toward the blocking end (117), the first inner needle cutting edge (124) and the first outer needle cutting edge (113) form a cutting point. When the cutting inner needle (120) moves in the direction away from the blocking end (117) of the cutting outer needle (110), the third inner needle cutting edge (126) and the third outer needle cutting edge (115) form a cutting point.

7. The ophthalmic surgical probe device according to any one of claims 1 to 4, characterized in that: The second opening comprises a third inner recess (121), a fourth inner recess (122) and a fifth inner recess (123); The cutting outer needle (110) has a blocking end (117) at one end away from the shell (300), the first inner recess (111) and the second inner recess (112) are located on the same side of the cutting outer needle (110), and the first inner recess (111) is close to the blocking end (117) of the cutting outer needle (110); the third inner recess (121) and the fourth inner recess (122) are respectively located on opposite sides of the cutting inner needle (120), the fifth inner recess (123) and the fourth inner recess (122) are located on the same side of the cutting inner needle (120), and the fifth inner recess (123) and the fourth inner recess (122) are arranged at intervals; In the fine mode, the third inner recess (121) is arranged corresponding to the first inner recess (111), the fourth inner recess (122) and the fifth inner recess (123) are arranged away from the second inner recess (112), the first inner recess (111) and the cutting inner needle (120) form a first suction channel, and the second inner recess (112) is in a closed state; the side wall of the first inner recess (111) forms a first outer needle cutting edge (113) and a second outer needle cutting edge (114), and the end of the cutting inner needle (120) is The edge forms a first inner needle cutting edge (124), the edge of the third inner recess (121) close to the blocking end (117) forms a second inner needle cutting edge (125), when the cutting inner needle (120) moves in a direction toward the blocking end (117), the first inner needle cutting edge (124) and the first outer needle cutting edge (113) form a cutting point, when the cutting inner needle (120) moves in a direction away from the blocking end (117), the second inner needle cutting edge (125) and the second outer needle cutting edge (114) form a cutting point; In the high-efficiency mode, the fourth inner recess (122) and the fifth inner recess (123) are both arranged corresponding to the second inner recess (112), the third inner recess (121) is arranged away from the first inner recess (111), the first inner recess (111) and the cutting inner needle (120) form a first suction channel, and the second inner recess (112) forms a second suction channel with the cutting inner needle (120) through the fourth inner recess (122) and the fifth inner recess (123); the side wall of the first inner recess (111) forms a first outer needle cutting edge (113) near the edge of the blocking end (117), the side wall of the second inner recess (112) forms a third outer needle cutting edge (115) and a fourth outer needle cutting edge (116), and the end edge of the cutting inner needle (120) forms a first inner needle cutting edge (124). The edge of the fourth inner recess (122) close to the blocking end (117) forms a third inner needle cutting edge (126), and the side wall of the fifth inner recess (123) forms a fourth inner needle cutting edge (127) and a fifth inner needle cutting edge (128). When the cutting inner needle (120) moves in a direction toward the blocking end (117), the first inner needle cutting edge (124) and the first outer needle cutting edge (113) form a cutting point, and the fifth inner needle cutting edge (128) and the fourth outer needle cutting edge (116) form a cutting point. When the cutting inner needle (120) moves in a direction away from the blocking end (117) of the cutting outer needle (110), the third inner needle cutting edge (126) and the third outer needle cutting edge (115) form a cutting point, and the fourth inner needle cutting edge (127) and the third outer needle cutting edge (115) form a cutting point.

8. The ophthalmic surgical probe device according to any one of claims 1 to 4, characterized in that: The second opening comprises a third inner recess (121), a fourth inner recess (122) and a fifth inner recess (123); The end of the cutting outer needle (110) away from the housing (300) has a blocking end (117), the first inner recess (111) and the second inner recess (112) are located on the same side of the cutting outer needle (110), and the first inner recess (111) is close to the blocking end (117) of the cutting outer needle (110); the third inner recess (121) and the fourth inner recess (122) are respectively located on opposite sides of the cutting inner needle (120), and the fifth inner recess (121) and the fourth inner recess (122) are respectively located on opposite sides of the cutting inner needle (120). There are multiple openings (123), multiple fifth inner recesses (123) and the fourth inner recesses (122) are located on the same side of the cutting inner needle (120), and multiple fifth inner recesses (123) are arranged at intervals, and the fourth inner recess (122) and the adjacent fifth inner recesses (123) are arranged at intervals; there are multiple second inner recesses (112), and the number of the second inner recesses (112) corresponds to the number of the fifth inner recesses (123); The number of the first openings is n, and the number of the second openings is n+1; In the fine mode, the third inner recess (121) is arranged corresponding to the first inner recess (111), the fourth inner recess (122) and the plurality of fifth inner recesses (123) are arranged away from the second inner recess (112), the first inner recess (111) and the cutting inner needle (120) form a first liquid suction channel, and the second inner recess (112) is in a closed state; the side wall of the first inner recess (111) forms a first outer needle cutting edge (113) and a second outer needle cutting edge (114), and the end of the cutting inner needle (120) is The first inner needle cutting edge (124) is formed at the edge of the third inner recess (121), and the second inner needle cutting edge (125) is formed near the edge of the blocking end (117); when the cutting inner needle (120) moves in a direction toward the blocking end (117), the first inner needle cutting edge (124) and the first outer needle cutting edge (113) form a cutting point; when the cutting inner needle (120) moves in a direction away from the blocking end (117), the second inner needle cutting edge (125) and the second outer needle cutting edge (114) form a cutting point; In the high-efficiency mode, the fourth inner recess (122) and the fifth inner recess (123) are both arranged corresponding to the second inner recess (112), the third inner recess (121) is arranged away from the first inner recess (111), the first inner recess (111) and the cutting inner needle (120) form a first liquid suction channel, and a plurality of the second inner recesses (112) form a second liquid suction channel with the cutting inner needle (120) through the fourth inner recess (122) and the plurality of the fifth inner recesses (123); wherein, the cutting inner needle (120) reciprocates along the cutting outer needle (110) for one cycle, and the number of cutting times generated by the cutting inner needle (120) and the cutting outer needle (110) in each cycle is S=2*(1+2+…+n)+1 times.

Images