Flow regulator for ultrasonic emulsification instrument

Abstract

The utility model belongs to the technical field of ultrasonic emulsification instruments, and particularly relates to a flow regulator for an ultrasonic emulsification instrument. Comprising an ultrasonic emulsification instrument handle and a suction pipe, a connecting pipe is arranged at a suction opening of the suction pipe, the suction pipe is connected and communicated with the connecting pipe through a threaded sleeve, the connecting pipe is connected and communicated with a suction connector of the ultrasonic emulsification instrument handle through a fixing pipe, and one end of the fixing pipe is connected with the connecting pipe through a clamping assembly. The other end of the fixing pipe is detachably connected with a suction connector of an ultrasonic emulsification instrument handle through a connecting assembly, a fixing plate is fixed in the fixing pipe, three sets of adjusting holes distributed in a circumferential array mode along the center of the fixing plate are formed in the fixing plate, the sizes of all the sets of adjusting holes are different, and a flow limiting plate is fixed in the fixing pipe. And a plurality of flow limiting holes are formed in the flow limiting plate. According to the utility model, the flow in the suction tube can be well adjusted, and eyeball injury caused by overlarge or unstable pressure is avoided.

Description

Technical Field

[0001] The utility model belongs to the technical field of ultrasonic emulsification instruments, in particular to a flow regulator for ultrasonic emulsification instruments. Background Art

[0002] Phacoemulsification is a device for treating cataracts. Its principle is to use ultrasound to break up the cloudy lens and suck out the lens fragments through a small incision, thereby improving the patient's vision. Its characteristics are short operation time, no pain, mild postoperative reaction, rapid recovery of vision, small surgical incision, rapid healing, and reduced incidence of intraoperative bleeding and complications. During phacoemulsification surgery, a 2-5mm incision is made on the edge of the cornea or sclera. The needle of the phacoemulsifier handle is inserted through the incision to break the cloudy lens and cortex into chyle. The chyle is sucked out with the help of the suction and perfusion system, while keeping the anterior chamber filled, and then an artificial lens is implanted to restore the patient's sight.

[0003] The current suction and perfusion system uses a suction tube connected to an operating handle at one end and a peristaltic pump at the other end. However, the suction tube has a large diameter and is soft, resulting in a large suction force and large flow rate changes. Not only is surge prone to occur, leading to instability in the anterior chamber of the eyeball and increased patient discomfort, but it can also cause the patient's eyeball to collapse, affecting the smooth progress of the operation. Therefore, it is necessary to adjust the flow rate of the suction tube to ensure a stable and controllable pressure when sucking the lens to improve the safety of the operation. Utility Model Content

[0004] In view of the above deficiencies in the prior art, the technical problem to be solved by the utility model is to provide a flow regulator for ultrasonic emulsification instrument, which can better adjust the flow in the suction tube and avoid eye damage caused by excessive or unstable pressure.

[0005] The flow regulator for ultrasonic emulsification instrument comprises an ultrasonic emulsification instrument handle and a suction tube, a connecting tube is arranged at the suction port of the suction tube, the suction tube is connected to the connecting tube through a threaded sleeve, the connecting tube is connected to the suction interface of the ultrasonic emulsification instrument handle through a fixed tube, one end of the fixed tube is connected to the connecting tube through a clamping assembly, the other end of the fixed tube is detachably connected to the suction interface of the ultrasonic emulsification instrument handle through a connecting assembly, a fixed plate is fixed in the fixed tube, three groups of adjustment holes are arranged on the fixed plate and distributed in a circular array along the center of the fixed plate, the size of each group of adjustment holes is inconsistent, a limiting flow plate is fixed in the fixed tube, and a plurality of limiting flow holes are arranged on the limiting flow plate.

[0006] Furthermore, the clamping assembly includes an annular groove in an annular structure formed on the inner wall of the connecting tube, a connecting block is provided in the annular groove and is slidably matched with the connecting block and is fixed on the fixed tube, a fixing seat is provided on the outer wall of the fixed tube, three clamping grooves are provided on the fixing seat, and a groove is provided on the outer wall of the connecting tube corresponding to the fixing seat, a limiting frame in a "door" type structure that is clamped with the clamping groove is provided in the groove, a spring is provided in the groove, one end of the spring is fixed in the groove, and one end of the spring is fixed on the limiting frame.

[0007] Furthermore, a slide groove is provided at the bottom of the groove, and a slider which is slidably matched with the slide groove is provided in the slide groove, and the slider is fixed at the bottom of the limiting frame.

[0008] Furthermore, a gear scale is provided on the outer side wall of the fixed tube corresponding to the fixed seat.

[0009] Furthermore, a magnet is fixed on the inner wall of each slot.

[0010] Furthermore, the limiting frame is made of metal material.

[0011] Furthermore, the connection assembly includes a plurality of limit bars fixed on the fixed pipe port, the plurality of limit bars are distributed in a circular array along the center of the pipe axis of the fixed pipe, the limit bars are all provided with external threads, and the limit bars are threadedly connected with locking nuts.

[0012] Furthermore, the threaded connection between the limit strip and the locking nut is a tapered threaded connection.

[0013] Furthermore, the outer side wall of the fixed tube is provided with anti-slip grooves.

[0014] Furthermore, the fixing plate and the current limiting plate are in close contact with each other.

[0015] Compared with the prior art, the utility model has the following beneficial effects:

[0016] The utility model installs the fixed tube on the suction interface of the ultrasonic emulsification instrument handle through a connecting component, and then connects the suction tube to the connecting tube through a threaded sleeve. When the pressure in the eyeball is too large, the connecting tube is rotated by the clamping component to drive the flow limiting plate to rotate. The flow limiting holes correspond to the regulating holes of different sizes, and the cross-sectional size of the flow through the flow limiting holes is changed, so the size of the flow in the suction tube can be better adjusted, thereby avoiding eyeball damage caused by excessive or unstable pressure. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the structure of the utility model;

[0018] Figure 2 for Figure 1 A top view of

[0019] Figure 3 for Figure 1 Structural diagram of the middle fixed plate;

[0020] Figure 4 This is a diagram of the use state of the utility model;

[0021] The names of the components in the figure are: 1. fixed tube 2. suction interface 3. limit strip 4. locking nut 5. fixed seat 6. magnet 7. limit frame 8. slider 9. spring 10. fixed plate 11. current limiting plate 12. connecting tube 13. threaded sleeve 14. suction tube 15. gear scale 16. adjustment hole. DETAILED DESCRIPTION

[0022] The present invention is further described below through specific embodiments in conjunction with the accompanying drawings, but the present invention is not limited thereto. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

[0023] Example 1

[0024] The flow regulator for ultrasonic emulsification apparatus described in this embodiment is as follows: Figure 1 , Figure 2 , Figure 3 and Figure 4 As shown, it includes a phacoemulsification instrument handle and a suction tube 14, wherein a connecting tube 12 is provided at the suction port of the suction tube 14, the suction tube 14 is connected to the connecting tube 12 through a threaded sleeve 13, and the connecting tube 12 is connected to the suction interface 2 of the phacoemulsification instrument handle through a fixed tube 1, and the phacoemulsification instrument handle is convenient for cataract lens nucleus fragmentation and vitrectomy and electrocoagulation, and mechanical vibration is generated by the transducer inside the phacoemulsification instrument handle, and the amplitude rod amplifies the mechanical vibration and transmits it to the emulsification needle, and the vibration of the tip of the emulsification needle emulsifies and sucks out the denatured lens nucleus of the cataract patient, and the embodiment cited in this embodiment The ultrasonic emulsification instrument handle is a prior art, and the present application does not improve its structure and principle; the suction tube 14 is connected to the connecting tube 12 through a threaded sleeve 13, and the outer wall of the suction end of the suction tube 14 is provided with an external thread, and the outer wall of the end of the connecting tube 12 is also provided with an external thread, and the threaded sleeve 13 is provided with an internal thread, and the suction tube 14 and the connecting tube 12 are connected and communicated through the threaded sleeve 13, which is convenient for installing or disassembling the connecting tube 12 and the suction tube 14, and the threaded connection can also be a tapered thread connection, thereby enhancing the sealing of the connection between the suction tube 14 and the connecting tube 12 to prevent liquid from overflowing;

[0025] One end of the fixed tube 1 is connected to the connecting tube 12 through a clamping assembly, which includes a sliding groove in an annular structure provided on the inner wall of the connecting tube 12, a fixing ring in an annular structure that is slidably matched with the sliding groove is provided in the sliding groove, and the fixing ring is fixed to the outer wall of the fixed tube 1, and a plurality of limit grooves are provided on the inner wall of the sliding groove, and a plurality of spring plungers that are mutually clamped with the limit grooves are fixed on the fixing ring corresponding to the limit grooves. The spring plunger is a prior art, and the spring plunger is also called a ball plunger, or a positioning bead / column, in which a spring is installed inside the screw thread, and the preload force is adjusted by controlling the screw-in depth and the positioning function is realized. The spring plunger has an elastic and retractable end that is clamped in the limit groove; the diameter of the fixed tube 1 is smaller than the diameter of the connecting tube 12, and one end of the fixed tube 1 is inserted into the connecting tube 12, and the outer wall of the fixed tube 1 is welded or glued. The fixing ring is located in the sliding groove of the inner wall of the connecting tube 12. When the connecting tube 12 is rotated, the spring plunger on the fixing ring slides in the sliding groove. The end of the spring plunger is squeezed between the inner wall of the sliding groove and the outer wall of the fixing ring and is compressed to be flush with the inner wall surface of the sliding groove. The baffle spring plunger moves in the sliding groove. When the spring plunger moves to the limiting groove, the end of the spring plunger loses the squeezing, stretches out and is clamped in the limiting groove under its own elastic force, thereby limiting the position of the connecting tube 12. When it is necessary to rotate the connecting tube 12 again, the rotation force applied is greater than the clamping force between the spring plunger and the limiting groove, so that the end of the spring plunger can be compressed again, and then the connecting tube 12 is rotated. A sealing ring is adhered to the fixing ring, so that the connection between the connecting tube 12 and the fixing tube 1 is in a sealed state to prevent liquid from overflowing.

[0026] The other end of the fixed tube 1 is detachably connected to the suction interface 2 of the ultrasonic emulsification instrument handle through a connecting component, and the connecting component includes two connecting blocks fixed to the outer wall of the suction interface 2, and a slot is opened on the inner wall of the fixed tube 1 corresponding to the connecting block, and one end of the slot extends to the port of the fixed tube 1, and the other end of the corresponding slot is opened on the inner wall of the fixed tube 1. A connecting groove with a ring structure is opened. When in use, the suction interface 2 is inserted into the fixed tube 1, and the connecting block on the outer wall of the suction interface 2 is inserted into the slot on the inner wall of the fixed tube 1. When the connecting block moves to the connecting groove, the fixed tube 1 is rotated to make the connecting block snap into the connecting groove, thereby connecting the fixed tube 1 with the suction interface 2. When it is necessary to remove the fixed tube 1 from the suction interface 2, the fixed tube 1 is rotated to make the connecting block move from the connecting groove to the slot and then move it out of the slot, which is convenient for removing the fixed tube 1 from the suction interface 2, and convenient for installing and disassembling the fixed tube 1 and the suction interface 2, and has good practicality.

[0027] A fixed plate 10 is fixed in the fixed tube 1, and three groups of adjusting holes 16 are arranged on the fixed plate 10 and distributed in a circular array along the center of the fixed plate 10, and the sizes of each group of adjusting holes 16 are inconsistent. A limiting flow plate 11 is fixed in the fixed tube 1, and a plurality of limiting flow holes are arranged on the limiting flow plate 11. A fixed plate 10 is welded or glued in the fixed tube 1, and three groups of adjusting holes 16 of different sizes are arranged on the fixed plate 10, and each group of adjusting holes 16 is distributed in a circular array along the center of the fixed plate 10, wherein the size of the first group of adjusting holes 16 is the largest, and the size of the third group of adjusting holes 16 is the smallest, and the adjusting holes 16 are distributed in order from large to small in size. A limiting flow plate 11 is welded or glued in the limiting flow plate 11, and a plurality of limiting flow holes are arranged on the limiting flow plate 11, and the limiting flow holes are consistent with the size, shape and position of the first group of adjusting holes 16, and the fixed plate 10 and the limiting flow plate 11 fit together, so that The flow rate is better adjusted through the regulating hole 16 and the flow limiting hole. When the flow limiting hole on the flow limiting plate 11 corresponds to the first group of regulating holes 16 on the fixed plate 10, the size of the flow limiting hole is the largest at this time, so the liquid flow rate passing through is also the largest. The connecting tube 12 is rotated to drive the flow limiting plate 11 to rotate. When the flow limiting hole on the flow limiting plate 11 corresponds to the third group of regulating holes 16, the size of the flow limiting hole is the smallest at this time, so the liquid flow rate passing through is also the smallest. The emulsified crystal flow rate is adjusted, and combined with the spring plunger in the clamping assembly, when the flow limiting hole is rotated to correspond to a group of regulating holes 16, the spring plunger and the limiting groove are clamped with each other, thereby fixing the position of the flow limiting plate 11, and then the flow of the emulsified lens passing through is easy to adjust. The flow rate is adjusted by changing the cross section to ensure that there is a stable and controllable pressure when the lens is sucked, thereby improving the safety of the operation.

[0028] The outer wall of the fixed tube 1 is provided with anti-slip grooves. The outer wall of the fixed tube 1 is provided with anti-slip grooves, and anti-slip strips can also be pasted on the outer wall of the fixed tube 1. The anti-slip grooves can increase the friction between the hands of medical staff and the fixed tube 1, and the fixed tube 1 is more stable when rotating, avoiding slipping due to sweat on the hands, which affects the regulation of the flow rate;

[0029] During actual use, the fixed tube 1 is installed on the suction interface 2 of the ultrasonic emulsification instrument handle through the connecting component, and then the suction tube 14 is connected to the connecting tube 12 through the threaded sleeve 13. The ultrasonic emulsification instrument handle is used to emulsify and suck out the denatured lens nucleus of the cataract patient. The emulsified lens flow flows from the suction interface 2 of the ultrasonic emulsification instrument handle to the fixed tube 1, then flows to the connecting tube 12 through the fixed tube 1, and finally is discharged through the suction tube 14. When the medical staff observes the inside of the eye through a microscope and determines that the pressure inside the eyeball is too high, the connecting tube 12 is rotated by the clamping component to drive the flow limiting plate 11 to rotate. The flow limiting holes on the flow limiting plate 11 correspond to the adjustment holes 16 of different sizes, and the cross-sectional size of the flow through the flow limiting holes is changed, thereby adjusting the flow of the crystal after emulsification, ensuring that there is a stable and controllable pressure when the lens is sucked, and avoiding damage to the eyeball.

[0030] Example 2

[0031] This embodiment further illustrates the technology. Figure 1 , Figure 2 and Figure 4As shown, the clamping assembly includes an annular groove with an annular structure provided on the inner wall of the connecting tube 12, a connecting block which is slidably matched with the connecting tube 1 and fixed on the fixing tube 1 is arranged in the annular groove, a fixing seat 5 is arranged on the outer wall of the fixing tube 1, three clamping grooves are arranged on the fixing seat 5, a groove is arranged on the outer wall of the connecting tube 12 corresponding to the fixing seat 5, a limiting frame 7 which is mutually clamped with the clamping groove and has a "door" type structure is arranged in the groove, a spring 9 is arranged in the groove, one end of the spring 9 is fixed in the groove, and one end of the spring 9 is fixed on the limiting frame 7, an annular groove is arranged on the inner wall of the connecting tube 12, a connecting block which is slidably matched with the connecting tube 1 is arranged in the annular groove, the connecting block is welded or glued to the outer wall of the fixing tube 1, the fixing tube 1 is inserted into the connecting tube 12 by means of the annular groove and the connecting block, the connecting tube 12 rotates on the fixing tube 1, a fixing seat 5 is welded or glued on the top of the fixing tube 1, three evenly distributed clamping grooves are arranged on the top of the fixing seat 5, the clamping grooves extend to the left side wall of the fixing seat 5, a groove is arranged on the top of the connecting tube 12, and a limiting groove is arranged in the groove The spring 9 is arranged between the inner wall of the groove and the limit frame 7, one end of the spring 9 is welded to the inner wall of the groove, and the other end of the spring 9 is welded to the side wall of the limit frame 7. The position of the limit frame 7 is limited by the spring 9. When in use, the limit frame 7 is moved to squeeze the spring 9, and the other end of the limit frame 7 is moved out of one of the slots. The connecting pipe 12 is rotated to drive the limit frame 7 to rotate. When the limit frame 7 rotates to correspond to the other slot, the limit frame 7 is released, and the limit frame is pushed under the elastic force of the spring 9. 7 moves toward the card slot, and the limiting frame 7 and the card slot are mutually engaged, thereby fixing the position of the connecting tube 12, and when the limiting frame 7 moves from one card slot to another card slot and is mutually engaged therewith, the flow limiting holes of the flow limiting plate 11 rotate from one group of adjustment holes 16 to correspond one to one with another group of adjustment holes 16, so that the flow limiting plate 11 can be rotated to adjust the amount of emulsified crystal flow passing through the flow limiting holes. Medical staff can make more precise adjustments to the flow according to actual usage conditions, thereby improving the safety of the operation;

[0032] A slide groove is provided at the bottom of the groove, a slider is provided in the slide groove to slide with the slider, the slider is fixed at the bottom of the limit frame 7, and the slider is welded or glued to the bottom of the limit frame 7. The slide groove and the slider make the limit frame 7 move more stably and smoothly in the groove, so that it can better engage with the card slot;

[0033] The corresponding fixing seat 5 is provided with a gear scale 15 on the outer wall of the fixing tube 1, and the top of the fixing tube 1 is printed with a gear scale 15, the gear scale 15 is 1, 2 and 3, and each number corresponds to three card slots one by one. When the medical staff adjusts the flow rate, they can clearly and intuitively understand the gear for adjusting the flow rate. The first gear is the maximum flow rate, and the third gear is the minimum flow rate, so that the flow rate can be adjusted more accurately;

[0034] A magnet 6 is fixed to the inner wall of each card slot, and a magnet 6 is pasted to the inner wall of each card slot. The limit frame 7 is made of metal material, and the limit frame 7 is made of iron. When the limit frame 7 and the card slot are engaged with each other, the side wall of the limit frame 7 and the magnet 6 on the side wall of the card slot attract each other, thereby further increasing the stability of the engagement between the limit frame 7 and the card slot, and better regulating the flow rate;

[0035] Example 3

[0036] This embodiment further illustrates the technology. Figure 1 , Figure 2 and Figure 4 As shown, the connection assembly includes a plurality of limit strips 3 fixed on the port of the fixed tube 1, and the plurality of limit strips 3 are distributed in a circumferential array along the center of the tube axis of the fixed tube 1, and the limit strips 3 are all provided with external threads, and the limit strips 3 are threadedly connected with locking nuts 4, and the port of the fixed tube 1 is welded or glued with a plurality of limit strips 3, and the suction interface 2 is inserted into the port of the fixed tube 1, and the limit strips 3 are in contact with the suction interface 2, and the outer side walls of the plurality of limit strips 3 are all provided with external threads, and the locking nuts 4 are threadedly matched with the limit strips 3, and the locking nuts 4 make the plurality of limit strips 3 The spacing between the limit strips 3 is reduced, so that the limit strip 3 tightens the suction interface 2 and fixes the fixed tube 1 on the suction interface 2. If the fixed tube 1 needs to be removed from the suction interface 2, the locking nut 4 is rotated to loosen the constraint on the limit strip 3, and the limit strip 3 loosens the fixation on the suction interface 2, which is convenient for installation and removal of the fixed tube 1 and more convenient to use. The threaded connection between the limit strip 3 and the locking nut 4 is a tapered thread connection, which makes the connection between the fixed tube 1 and the suction interface 2 tighter and prevents liquid from overflowing.

Claims

1. A flow regulator for ultrasonic emulsification instrument, comprising a handle of the ultrasonic emulsification instrument and a suction tube (14), characterized in that: A connecting pipe (12) is provided at the suction port of the suction pipe (14); the suction pipe (14) is connected to the connecting pipe (12) through a threaded sleeve (13); the connecting pipe (12) is connected to the suction interface (2) of the ultrasonic emulsification instrument handle through a fixed pipe (1); one end of the fixed pipe (1) is connected to the connecting pipe (12) through a clamping assembly; the other end of the fixed pipe (1) is detachably connected to the suction interface (2) of the ultrasonic emulsification instrument handle through a connecting assembly; a fixed plate (10) is fixed inside the fixed pipe (1); three groups of adjustment holes (16) are arranged on the fixed plate (10) and are distributed in a circular array along the center of the fixed plate (10); the sizes of the adjustment holes (16) of each group are different; a limiting flow plate (11) is fixed inside the fixed pipe (1); a plurality of limiting flow holes are arranged on the limiting flow plate (11).

2. The flow regulator for ultrasonic emulsification apparatus according to claim 1, characterized in that: The clamping assembly comprises an annular groove in an annular structure formed on the inner wall of the connecting tube (12), a connecting block which is slidably matched with the connecting tube and fixed on the fixing tube (1) is arranged in the annular groove, a fixing seat (5) is arranged on the outer wall of the fixing tube (1), three clamping grooves are arranged on the fixing seat (5), a groove is arranged on the outer wall of the connecting tube (12) corresponding to the fixing seat (5), a limiting frame (7) which is clamped with the groove and has a "door" structure is arranged in the groove, a spring (9) is arranged in the groove, one end of the spring (9) is fixed in the groove, and one end of the spring (9) is fixed on the limiting frame (7).

3. The flow regulator for ultrasonic emulsification apparatus according to claim 2, characterized in that: A slide groove is provided at the bottom of the groove, and a sliding block is provided in the slide groove to be slidably matched with the sliding block, and the sliding block is fixed at the bottom of the limiting frame (7).

4. The flow regulator for ultrasonic emulsification apparatus according to claim 2, characterized in that: A gear scale (15) is provided on the outer side wall of the fixed tube (1) corresponding to the fixed seat (5).

5. The flow regulator for ultrasonic emulsification apparatus according to claim 2, characterized in that: A magnet (6) is fixed on the inner wall of each slot.

6. The flow regulator for ultrasonic emulsification apparatus according to claim 2, characterized in that: The limiting frame (7) is made of metal material.

7. The flow regulator for ultrasonic emulsification apparatus according to claim 1, characterized in that: The connection assembly comprises a plurality of limit strips (3) fixed on the port of the fixed tube (1), the plurality of limit strips (3) being distributed in a circular array along the center of the tube axis of the fixed tube (1), the limit strips (3) being provided with external threads, and the limit strips (3) being threadedly connected with locking nuts (4).

8. The flow regulator for ultrasonic emulsification apparatus according to claim 7, characterized in that: The threaded connection between the limiting strip (3) and the locking nut (4) is a tapered threaded connection.

9. The flow regulator for ultrasonic emulsification apparatus according to claim 1, characterized in that: The outer side wall of the fixing tube (1) is provided with anti-slip grooves.

10. The flow regulator for ultrasonic emulsification apparatus according to claim 1, characterized in that: The fixing plate (10) and the flow limiting plate (11) are in close contact with each other.

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