An illumination light guide and cooling device for ultrasonic therapy

Abstract

The application discloses an illumination light guide and cooling equipment for ultrasonic treatment, which comprises a working tip, a light guide cap, a handle head cap, a light source, a conversion head light guide column, an ultrasonic handle shell, an ultrasonic transducer, a handle tail cap and a tail end power terminal; the light guide cap can propagate and illuminate the working tip through the conversion head light guide column; wherein the light guide cap, the handle head cap, the conversion head light guide column and the ultrasonic handle shell are hollow structures, and the end surface of the light guide cap is perpendicular to the axis of the working tip, so that the illumination effect of the working tip tip position can be greatly improved; the gas and / or liquid can be discharged through the gap between the working tip and the light guide cap after passing through the handle head cap and the conversion head light guide column, so that the cooling and refrigeration effect during the operation of the working tip tip can be effectively improved.

Description

TECHNICAL FIELD

[0001] The present application belongs to the technical field of medical devices, and particularly relates to an illumination light guide and cooling device for ultrasonic treatment, which is used for ultrasonic treatment such as ultrasonic washing, scaling, root canal treatment, tartar removal, and bone tissue cutting. BACKGROUND

[0002] An ultrasonic treatment instrument is an advanced treatment device for dental and orthopedic surgery, which uses high-frequency ultrasonic waves to perform treatment. It can effectively remove bacteria and dental plaque on the surface of teeth and gums, and also helps dentists to operate more accurately and efficiently during root canal treatment, tooth extraction, bone tissue cutting, and implant surgery. In addition, the ultrasonic treatment instrument can also be used for tooth whitening and periodontal disease treatment, which can reduce the pain and discomfort of patients. Using the ultrasonic treatment instrument for treatment can reduce the amount of bleeding and tissue damage during surgery, which helps to improve the treatment effect and reduce the postoperative recovery time.

[0003] In the prior art such as the design of the working tip for root canal, crown removal treatment, and bone tissue cutting operation, in order to reduce the heat loss effect when the working tip cuts stones and bone tissue, a slot or hole is provided on one side of the curved part of the working tip, so that the cooling liquid flow can flow out through the ultrasonic transducer. Under the condition of ultrasonic vibration, the liquid flow is easy to form water mist, which blocks the doctor's view and reduces the probability of the liquid flow reaching the cutting position of the tip of the working tip, which is easy to cause heat damage to the contact part of the tip of the working tip. In addition, when the working tip adopts a curved angle design, the existing illumination light guide device is difficult to irradiate light into the small space with an included angle, which affects the operation of the doctor.

[0004] In view of the above-mentioned ultrasonic treatment device, due to the existence of a small long center hole in the working tip and the ultrasonic transducer, there are problems of high processing difficulty and high cost. Processing defects are easy to cause the working tip to break during loading work. When physiological saline is perfused, the long liquid flow hole in the center of the ultrasonic transducer is easy to cause salt crystallization during disinfection and sterilization, which blocks the center fine hole, thereby causing medical adverse events. SUMMARY

[0005] The present application provides an illumination light guide and cooling device for ultrasonic treatment, which can improve the illumination effect of the tip of the working tip during treatment, greatly improve the illumination problem of the lateral curved working tip through flexible light guide, and adjust the cooling mode under different power by means of external gas-liquid mixed refrigeration, effectively improve the cooling effect of the tip of the working tip during operation, and provide a clear surgical field for doctors.

[0006] In order to achieve the above-mentioned purpose, the present application adopts the following specific technical solutions:

[0007] An illumination light guide and cooling device for ultrasonic treatment, the light guide and cooling device comprising a working tip, a light guide cap, a handle head cap, a conversion head light guide column, a light source, an ultrasonic handle shell, an ultrasonic transducer, a handle tail cap and a tail end power terminal;

[0008] The light guide cap, the handle head cap, the ultrasonic handle shell and the handle tail cap are fixedly connected in sequence and form a hollow cavity inside;

[0009] The conversion head light guide column, the light source, the ultrasonic transducer and the tail end power terminal are fixedly installed in the hollow cavity;

[0010] The ultrasonic transducer is arranged through the handle head cap and the ultrasonic handle shell, the front end is fixedly connected with the rear end of the working tip, and is used for completing piezoelectric conversion of alternating current power input through the tail end power terminal to form ultrasonic vibration at the tip of the working tip;

[0011] The two ends of the conversion head light guide column abut against the light guide cap and the ultrasonic transducer;

[0012] The front end of the working tip extends to the outside of the front end of the light guide cap, and an annular gap is formed between the working tip and the light guide cap;

[0013] The light source is fixedly installed at the rear end of the conversion head light guide column; the conversion head light guide column and the light guide cap are used for conducting illumination light generated by the light source to a treatment site of the working tip;

[0014] The handle head cap and the conversion head light guide column have a matching gap, and the matching gap is used for spraying gas / liquid entering through the handle head cap through the annular gap to cool the working tip and the treatment site.

[0015] Further, the handle head cap is provided with a gas inlet, a liquid inlet, a gas outlet, a liquid outlet, a gas channel, a liquid channel and a power terminal;

[0016] The gas inlet, the liquid inlet and the power terminal are located on the outer surface of the handle head cap; the gas outlet and the liquid outlet are located in the matching gap; the gas channel and the liquid channel are located in the side wall of the handle head cap; the gas inlet and the gas outlet are communicated through the gas channel; the liquid inlet and the liquid outlet are communicated through the liquid channel; and the power terminal is electrically connected with the light source;

[0017] When low-power ultrasonic treatment is performed, the gas refrigeration mode can solve the problem of blurred surgical field caused by ultrasonic atomization; when medium and high-power ultrasonic treatment is performed, by adjusting the proportion of water flow and air, the liquid flow forms supersaturated low-temperature water vapor when flowing through the gap, and the annular gap covers the working tip, so that the cooling purpose is achieved.

[0018] Further, the light guide column of the conversion head is made of a hard light guide material.

[0019] The light guide cap is made of an elastic light guide material.

[0020] Further, the hard light guide material is PMMA (Polymethylmethacrylate, also known as acrylic or organic glass) or PC (Polycarbonate).

[0021] The elastic light guide material is liquid silicone or silicone.

[0022] Further, the light source is a light-emitting diode.

[0023] Further, the front end surface of the light guide cap is perpendicular to the tip axis of the working tip.

[0024] Further, the angle between the normal line of the front end surface of the light guide cap and the tip axis of the working tip is not more than ±20% of the lateral bending angle of the working tip.

[0025] Further, the light guide cap is provided with a plurality of micropores on the front end surface.

[0026] Further, the plurality of micropores are arranged in a circular ring array.

[0027] Further, the ultrasonic transducer is of a solid structure.

[0028] Compared with the prior art, the technical scheme of the present application has the following beneficial effects:

[0029] 1. The illumination light guide and cooling device can provide good illumination effect for the working tip, especially for the laterally curved working tip.

[0030] 2. The illumination light guide and cooling device can provide various cooling schemes for ultrasonic operation of different power, and reduce the problem of blurred surgical field caused by ultrasonic atomization, such as: when low-power ultrasonic treatment is performed, the doctor can choose to use gas refrigeration, which can fundamentally solve the problem of blurred surgical field caused by ultrasonic atomization; when medium-power ultrasonic treatment is performed, the doctor can adjust the proportion of water flow and air, so that the liquid flow forms supersaturated low-temperature water vapor when flowing through the gap between the components, and the top opening of the light guide cap covers the working tip, so that the cooling purpose is achieved.

[0031] 3、The illumination light guide and cooling device can reduce the difficulty and cost of manufacturing the open hole of the working tip and the ultrasonic transducer part, and reduce the probability of the working tip breaking when the working tip is loaded.

[0032] 4、The illumination light guide and cooling device can reduce the waterproof structure of the ultrasonic transducer, reduce the various waterproof sealing structures of the ultrasonic transducer at the handle part due to the need for waterproofing, and reduce the ultrasonic vibration loss caused by the liquid flow channel connecting the liquid flow pipe of the ultrasonic transducer tail end with the ultrasonic handle shell. BRIEF DESCRIPTION OF DRAWINGS

[0033] Figure 1 The overall structure schematic diagram and the cross-sectional view of the illumination light guide and cooling device provided by the present application are shown in the figure;

[0034] Figure 2 The exploded view and the cross-sectional view of the illumination light guide and cooling device are shown in the figure; Figure 1

[0035] Figure 3 The assembly structure schematic diagram of the working tip, the light guide cap and the handle head cap is shown in the figure;

[0036] Figure 4 The structure schematic diagram of the handle head cap is shown in the figure;

[0037] Figure 5 The structure schematic diagram of the front end face of the light guide cap is shown in the figure;

[0038] Figure 6 Another structure schematic diagram of the front end face of the light guide cap is shown in the figure.

[0039] Wherein, 1-working tip, 2-light guide cap, 3-handle head cap, 4-conversion head light guide column, 5-light source, 6-ultrasonic handle shell, 7-ultrasonic transducer, 8-handle tail cap, 9-tail end power terminal, 11-bend, 21-front end face, 31-handle head cap front end, 311-inlet, 312-outlet, 313-liquid inlet, 314-liquid outlet, 315-positive power terminal, 316-negative power terminal. DETAILED DESCRIPTION

[0040] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor are within the scope of protection of the present application.

[0041] As Figure 1 and​Figure 2 As shown in the structure, the embodiment provides an illumination light guide and cooling device for ultrasonic treatment, which comprises a working tip 1, a light guide cap 2, a handle head cap 3, a conversion head light guide column 4, a light source 5, an ultrasonic handle shell 6, an ultrasonic transducer 7, a handle tail cap 8 and a tail end power terminal 9. The ultrasonic transducer 7 is of a solid structure. The light guide cap 2, the conversion head light guide column 4, the handle head cap 3 and the ultrasonic handle shell 6 are all hollow structures. The light guide cap 2, the handle head cap 3, the ultrasonic handle shell 6 and the handle tail cap 8 are sequentially fixed and connected from front to back and form a hollow cavity inside. The conversion head light guide column 4, the light source 5, the ultrasonic transducer 7 and the tail end power terminal 9 are all fixedly installed in the hollow cavity.

[0042] As shown in the structure, the light guide cap 2 and the handle head cap 3 can be connected by clamping. The rear end of the light guide cap 2 is internally provided with a clamping groove, and the front end of the handle head cap 3 is provided with a clamping flange. When the clamping flange is clamped in the clamping groove, the light guide cap 2 and the handle head cap 3 are sealingly connected. The rear end of the handle head cap 3 is internally provided with a sealing taper surface, and the rear end of the conversion head light guide column 4 is provided with a tapered sealing surface. The ultrasonic transducer 7 passes through the center through hole of the conversion head light guide column 4 and extrudes the conversion head light guide column 4 so that the tapered sealing surface of the conversion head light guide column 4 cooperates with the sealing taper surface of the handle head cap 3 to realize annular sealing. Figure 1 Figure 2 As shown in the structure, the light guide cap 2 and the handle head cap 3 can be connected by clamping. The rear end of the light guide cap 2 is internally provided with a clamping groove, and the front end of the handle head cap 3 is provided with a clamping flange. When the clamping flange is clamped in the clamping groove, the light guide cap 2 and the handle head cap 3 are sealingly connected. The rear end of the handle head cap 3 is internally provided with a sealing taper surface, and the rear end of the conversion head light guide column 4 is provided with a tapered sealing surface. The ultrasonic transducer 7 passes through the center through hole of the conversion head light guide column 4 and extrudes the conversion head light guide column 4 so that the tapered sealing surface of the conversion head light guide column 4 cooperates with the sealing taper surface of the handle head cap 3 to realize annular sealing.

[0043] The ultrasonic transducer 7 is installed in the handle head cap 3 and the ultrasonic handle shell 6. The ultrasonic transducer 7 passes through the handle head cap 3 and the ultrasonic handle shell 6 and is fixedly connected with the rear end of the working tip 1. The ultrasonic transducer 7 is used to complete piezoelectric conversion of the alternating current power input through the tail end power terminal 9 and form ultrasonic vibration at the tip of the working tip 1 to realize cutting, punching, scaling and other surgical operations. The tail end power terminal 9 is installed in the ultrasonic handle shell 6 and is used to connect the ultrasonic transducer 7 with an external power supply to provide alternating current for the ultrasonic transducer 7.

[0044] The light source 5 is fixedly installed at the rear end of the conversion head light guide column 4 and is used to generate illumination light. The conversion head light guide column 4 and the light source 5 are installed in the handle head cap 3. The two ends of the conversion head light guide column 4 abut against the light guide cap 2 and the ultrasonic transducer 7 and are used to transmit the light generated by the light source 5 to the light guide cap 2. The light source 5 is a light emitting diode and has a circuit board. The light emitting diode is welded on the circuit board, and the circuit board is fixedly installed at the rear end surface of the conversion head light guide column 4.

[0045] ​The front end of the working tip 1 extends to the outside of the front end of the light guide cap 2, and an annular gap is formed between the working tip 1 and the light guide cap 2; the rear end of the working tip 1 is fixedly connected with the front end of the ultrasonic transducer 7, and the working tip 1 and the ultrasonic transducer 7 can be connected through threads. In this embodiment, the working tip 1 is of a bent structure, and has a bending portion 11 in the middle portion, so that an included angle is formed between the front and rear ends of the bending portion 11 of the working tip 1.

[0046] The light guide column 4 and the light guide cap 2 are used for conducting the illumination light generated by the light source 5 to the treatment site of the working tip 1; the light guide column 4 is made of a hard light guide material, such as PMMA (Polymethylmethacrylate, also known as acrylic or organic glass) or PC (Polycarbonate); and the light guide cap 2 is made of an elastic light guide material, such as liquid silicone or silicone.

[0047] The handle head cap 3 and the light guide column 4 have a fitting gap therebetween, and the handle head cap 3 and the rear end of the light guide column 4 are sealingly fitted, so that the fitting gap formed between the handle head cap 3 and the light guide column 4 has an outlet only at the front end towards the working tip 1, and has no outlet at the rear end towards the rear cap of the handle, that is, the gas and / or liquid entering the fitting gap between the handle head cap 3 and the light guide column 4 through the handle head cap 3 can only flow out from the end of the working tip 1, and the fitting gap is used for spraying the gas / liquid entering through the handle head cap 3 out of the annular gap to cool the working tip 1 and the treatment site. In order to facilitate the formation of the fitting gap between the handle head cap 3 and the light guide column 4, and the formation of the annular gap between the working tip 1 and the light guide cap 2, as shown in Figure 1 、 Figure 2 、 Figure 3 and Figure 4 , the light guide cap 2, the handle head cap 3 and the light guide column 4 are all provided with tapered portions.

[0048] In order to cool and clean the working tip 1 and the treatment site, as shown in Figure 4 , the handle head cap 3 is provided with a gas inlet 311, a gas outlet 312, a liquid inlet 313, a liquid outlet 314, a gas channel (not shown in the figure), a liquid channel (not shown in the figure) and a power terminal; the power terminal has a power terminal positive electrode 315 and a power terminal negative electrode 316; the gas inlet 311, the liquid inlet 313 and the power terminal are all located on the outer surface of the handle head cap 3; the gas outlet 312 and the liquid outlet 314 are located in the fitting gap; the gas channel and the liquid channel are located in the side wall of the handle head cap 3; the gas inlet 311 and the gas outlet 312 are communicated through the gas channel; the liquid inlet 313 and the liquid outlet 314 are communicated through the liquid channel; the power terminal is electrically connected with the light source 5, and is used for providing driving current to the light source 5.

[0049] When the above working tip 1 is used for low-power ultrasonic treatment, the gas refrigeration method can solve the problem of blurred surgical field caused by ultrasonic atomization; when the above working tip 1 is used for medium-high power ultrasonic treatment, by adjusting the ratio of water flow and air, the liquid flow forms super-saturated low-temperature water vapor when passing through the cooperation gap, and the annular gap covers the working tip 1, so as to achieve the purpose of cooling.

[0050] As shown in Figure 3 , the front end surface 21 of the light guide cap 2 is perpendicular to the tip axis of the working tip 1. The front end of the working tip 1 is a tip and a working end, and the rear end is provided with a base fixedly connected with the ultrasonic transducer 7 (not shown in the figure), and the tip and the base are integrally formed. In this embodiment, the tip of the working tip 1 is a bending structure and has a lateral bending angle; the central axis of the base coincides with the central axis of the ultrasonic transducer 7 and the central axis of the ultrasonic handle shell 6, and the lateral bending angle is equal to the angle between the front end portion axis of the tip and the axis of the base, at the same time, the lateral bending angle is also equal to the angle β between the front end portion axis of the tip and the axis of the ultrasonic handle shell 6; the angle between the normal line of the front end surface of the light guide cap 2 and the tip axis of the working tip 1 is not more than ±20% of the lateral bending angle of the working tip, so as to ensure that the gas and / or liquid sprayed can be aligned with the working tip 1 or the treatment site, and avoid deviating from the working tip 1 or the treatment site. In particular, as shown in Figure 3 , when the angle β between the tip portion axis of the working tip 1 and the handle axis is greater than 0°, the light emitted from the light guide column 4 of the conversion head cannot effectively illuminate the tip working area of the working tip 1; when the light guide cap 2 is increased and the front end surface thereof is approximately perpendicular to the tip axis of the working tip 1, that is, γ=90°, the divergence angle α of the light emitted from this part is effective for illuminating the working area. Generally, the optical refractive index of flexible silica gel material is about 1.44, and its divergence angle is not less than 60°.

[0051] In order to adjust the emission direction of the tip refrigeration gas and fluid of the working tip 1, the light guide cap 2 is provided with a plurality of micropores on the front end surface 21, as shown in Figure 5 and Figure 6 , the plurality of micropores are arranged in a circular ring array, Figure 5 two circular holes are arranged on the tip of the working tip 1, Figure 6 two oblong holes are arranged on the tip of the working tip 1, so as to control the spatial distribution ratio of the liquid flow reaching different positions of the tip.

[0052] The illumination light guide and cooling device can provide good illumination effect for the working tip 1, especially the side bending working tip 1, and can provide various cooling schemes for different power ultrasonic operations, thereby reducing the problem of blurred surgical field caused by ultrasonic atomization. For example, when low-power ultrasonic treatment is performed, the doctor can choose to use gas cooling, which can fundamentally solve the problem of blurred surgical field caused by ultrasonic atomization. When medium-power ultrasonic treatment is performed, the doctor can choose to adjust the proportion of water flow and air, so that the liquid flow forms supersaturated low-temperature water vapor when passing through the gap between the components, and the top opening of the light guide cap 2 covers the working tip 1, thereby achieving the purpose of cooling.

[0053] The working tip 1 and the ultrasonic transducer 7 of the illumination light guide and cooling device adopt a solid structure, and there is no need to open a long hole in the working tip 1 and the ultrasonic transducer 7, which can reduce the difficulty and cost of processing and manufacturing the long hole in the working tip 1 and the ultrasonic transducer 7, and at the same time, reduce the probability of fracture of the working tip 1 when the working tip 1 is loaded. The cooling gas and liquid directly enter between the handle head cap 3 and the conversion head light guide column 4 through the handle head cap 3, which reduces the waterproof structure of the ultrasonic transducer 7, and can reduce the various waterproof sealing structures of the ultrasonic transducer 7 at the handle part due to the need for waterproofing, and reduce the ultrasonic vibration loss caused by the liquid flow channel connecting the liquid flow pipeline at the tail end of the ultrasonic transducer 7 and the ultrasonic handle shell 6.

[0054] Obviously, those skilled in the art can make various modifications and variations to the embodiments of the present application without departing from the spirit and scope of the present application. Thus, if these modifications and variations of the present application fall within the scope of the claims of the present application and their equivalent technologies, the present application also intends to include these modifications and variations.

Claims

1. An illumination light guide and cooling device for ultrasonic therapy, characterized in that, The ultrasonic handpiece comprises a working tip, a light guide cap, a handle head cap, a conversion head light guide column, a light source, an ultrasonic handpiece shell, an ultrasonic transducer, a handle tail cap and a tail end power terminal; The light guide cap, the handle head cap, the ultrasonic handpiece shell and the handle tail cap are fixedly connected in sequence and form a hollow cavity inside; The conversion head light guide column, the light source, the ultrasonic transducer and the tail end power terminal are fixedly installed in the hollow cavity; The ultrasonic transducer is arranged through the handle head cap and the ultrasonic handpiece shell, and the front end is fixedly connected with the rear end of the working tip, so as to complete piezoelectric conversion of the alternating current power input through the tail end power terminal and form ultrasonic vibration at the tip end of the working tip; The two ends of the conversion head light guide column abut against the light guide cap and the ultrasonic transducer; The front end of the working tip extends to the outside of the front end of the light guide cap and forms an annular gap between the working tip and the light guide cap; The light source is fixedly installed at the rear end of the conversion head light guide column; the conversion head light guide column and the light guide cap are used for conducting the illumination light generated by the light source to the treatment site of the working tip; The handle head cap and the conversion head light guide column have a fitting gap, which is used for spraying the gas / liquid entering through the handle head cap to form an annular gap so as to cool the working tip and the treatment site; The handle head cap is provided with an air inlet, a liquid inlet, an air outlet, a liquid outlet, a gas channel, a liquid channel and a power terminal; when low-power ultrasonic treatment is performed, the gas refrigeration mode can solve the problem of blurred surgical field caused by ultrasonic atomization; when medium-high power ultrasonic treatment is performed, by adjusting the proportion of water flow and air, the liquid flow forms supersaturated low-temperature water vapor when passing through the fitting gap, and the working tip is covered by the annular gap to achieve the purpose of cooling.

2. The illumination light guide and cooling apparatus for ultrasonic therapy according to claim 1, wherein, The air inlet, the liquid inlet and the power terminal are located on the outer surface of the handle head cap; the air outlet and the liquid outlet are located in the fitting gap; the gas channel and the liquid channel are located in the side wall of the handle head cap; the air inlet and the air outlet are communicated through the gas channel; the liquid inlet and the liquid outlet are communicated through the liquid channel; the power terminal is electrically connected with the light source.

3. The illumination light guide and cooling apparatus for ultrasonic therapy of claim 1, wherein, The conversion head light guide column is made of hard light guide material; The light guide cap is made of elastic light guide material.

4. The illumination light guide and cooling apparatus for ultrasonic therapy of claim 3, wherein, The hard light guide material is polymethyl methacrylate or polycarbonate; The elastic light guide material is liquid silicone or silicone.

5. The illumination light guide and cooling apparatus for ultrasonic therapy of claim 1, wherein, The light source is a light-emitting diode.

6. The illumination light guide and cooling apparatus for ultrasonic therapy of claim 1, wherein, The front end surface of the light guide cap is perpendicular to the axis of the tip end of the working tip.

7. The illumination light guide and cooling apparatus for ultrasonic therapy of claim 1, wherein, The angle between the normal line of the front end surface of the light guide cap and the axis of the tip end of the working tip is not more than ±20% of the lateral bending angle of the working tip.

8. The illumination light guide and cooling apparatus for ultrasonic therapy of claim 1, wherein, The light guide cap is provided with a plurality of micropores on the front end surface.

9. The illumination light guide and cooling apparatus for ultrasonic therapy of claim 8, wherein, The plurality of micropores are arranged in a circular array.

10. The illumination light guide and cooling apparatus for ultrasonic therapy of claim 1, wherein, The ultrasonic transducer is a solid structure.

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