Ultrasonic tip with a raised section defining the pre-suction port.

Abstract

To provide an ultrasonic tip for use with a surgical handpiece to produce both longitudinal and torsional motion.SOLUTION: The ultrasonic tip comprises a shaft having a longitudinal axis extending between proximal and distal ends having respective first and second diameters with the first diameter greater than the second diameter. The ultrasonic tip also comprises a cutting feature coupled to the distal end of the shaft. The shaft defines an aspiration lumen that extends along the longitudinal axis of the shaft. A protrusion on the shaft is positioned between the distal end and the proximal end of the shaft. A portion of the protrusion has a third diameter, and the third diameter is less than the first diameter and the third diameter is greater than the second diameter. An aperture is defined by the protrusion and in fluid communication with the aspiration lumen, and the protrusion reinforces an area surrounding the aperture.SELECTED DRAWING: Figure 8

Description

Technical Field

[0001] [Cross - Reference to Related Applications] This patent application claims the priority and all benefits of U.S. Provisional Patent Application No. 62 / 735,4 40, filed on September 24, 2018, and the entire content thereof is incorporated herein by reference and made a part of this specification.

Background Art

[0002] Medical professionals are striving to reduce the size of incisions and the amount of recovery time required after surgery, so the size of medical instruments used in such surgeries is getting smaller . Medical instruments used for such surgeries may include the use of cutting accessories such as ultrasonic chips . When performing cutting, shaving, or shaping operations, the cutting accessory will be exposed to various amounts of force, and stress will occur within the cutting accessory . The cutting accessory can also be used in conjunction with irrigation or aspiration, i.e., suction, to reduce heat at the surgical site and / or remove debris . Irrigation can also be used as a cutting means . .

[0003] The advantages of the present disclosure will be readily understood when the invention is better understood by referring to the following detailed description in conjunction with the accompanying drawings .

Brief Description of the Drawings

[0004] [Figure 1] It is a top view of an ultrasonic surgical handpiece assembly. [Figure 2] It is a cross - sectional view of the ultrasonic surgical handpiece assembly of FIG. 1 in the direction of the cutting line arrow 2. [Figure 3]This is an inclined top view of the ultrasonic tip and irrigation sleeve, with the ultrasonic tip located inside the irrigation sleeve. [Figure 4] This is a cross-sectional view of the ultrasonic tip and irrigation sleeve in Figure 3, in the direction of the cutting line arrow 4. [Figure 5] This is a perspective view of the distal portion of an ultrasonic tip, which includes a raised section and a cutting section. [Figure 6A] This is a side view of the first configuration of an ultrasonic tip, which includes a raised portion and a cutting function portion. [Figure 6B] This is a cross-sectional view of the ultrasonic tip along the 6B axis in Figure 6A, in the direction of the cutting line arrow 6B. [Figure 6C] This is a cross-sectional view of the ultrasonic tip along the 6C axis in Figure 6A, in the direction of the cutting line arrow 6C. [Figure 6D] This is a cross-sectional view of the ultrasonic tip along the 6D axis shown in Figure 6A, in the direction of the cutting line arrow 6D. [Figure 6E] This is a cross-sectional view of the ultrasonic tip along the 6E axis shown in Figure 6A, in the direction of the cutting line arrow 6E. [Figure 6F] This is a cross-sectional view of the ultrasonic tip along the 6F axis shown in Figure 6A, in the direction of the cutting line arrow 6F. [Figure 7] This is a cross-sectional view of the ultrasonic tip in Figure 6A in the direction of the cutting line arrow 7. [Figure 8] This is a cross-sectional view of the distal portion of the ultrasonic tip shown in Figure 5, which includes a raised portion and a cutting function portion in the direction of the cutting line arrow 8. [Figure 9] Figure 4 shows a magnified cross-sectional view of the distal portion of the ultrasound tip and the irrigation sleeve within the ellipse 9. [Figure 10A] This is a bottom view of the first configuration of an ultrasonic tip, which includes a raised portion and a cutting function portion. [Figure 10B] Figure 10A is a perspective view of the first configuration of the cutting function section in the distal region of the ultrasonic tip. [Figure 10C] Figure 10A is a perspective view of the second configuration of the cutting function section in the distal region of the ultrasonic tip. [Figure 10D]Figure 10A is a perspective view of the third configuration of the cutting function section in the distal region of the ultrasonic tip. [Figure 10E] Figure 10A is a perspective view of the fourth configuration of the cutting function section in the distal region of the ultrasonic tip. [Figure 11] Figure 1 is a side view of the ultrasonic surgical handpiece assembly. [Modes for carrying out the invention]

[0005] One example of a surgical instrument that can utilize an irrigation and / or suction system is an ultrasonic hand This is a surgical handpiece. Generally, one or more lines are connected to the ultrasonic surgical handpiece. This allows for the supply of irrigation and / or suction. The ultrasonic surgical handpiece is Direct the fluid from the irrigation source to the surgical site and / or cutting accessory, i.e., the ultrasonic tip. It can further include a sleeve having one or more lumens that can be used for that purpose. .

[0006] The ultrasonic tip, when used with a surgical handpiece, allows for longitudinal and torsional motion. It provides both directional motion, and the handpiece is super It has an ultrasonic transducer. The ultrasonic tip has a shaft, a cutting function part, and a raised part. It is equipped with a shaft having a longitudinal axis extending between its proximal and distal ends. The distal end has a first diameter. The distal end has a second diameter. The first diameter is equal to the second diameter. It is larger than the diameter. The shaft receives the vibration energy transmitted from the ultrasonic transducer. The vibration is converted into a composite vibration consisting of longitudinal vibration along the longitudinal axis and torsional vibration. It has a dynamic conversion mechanism. The cutting function part is connected to the distal end of the shaft. The suction tube lumen is It is defined by the protrusion. The suction lumen is configured to extend along the longitudinal axis of the shaft. The suction lumen is configured to be placed in fluid communication with the handpiece. The protrusion is on the shaft and is located between the distal end and the proximal end. The protrusion is located distally with respect to the longitudinal axis vibration conversion mechanism. A part of the protrusion has a third diameter. The third diameter is smaller than the first diameter, and the third diameter is larger than the second diameter. The opening is defined by the protrusion . The opening is in fluid communication with the suction lumen. The protrusion reinforces the area surrounding the opening .

[0007] The proximal end of the shaft can have a connecting functional part configured to removably connect the shaft to the transducer of the handpiece.

[0008] The connecting functional part can have a plurality of screw threads configured to connect to the transducer of the handpiece.

[0009] The vibration conversion mechanism can have one or more spiral grooves formed on the outer surface of the shaft.

[0010] The axis of the opening can be transverse to the longitudinal axis of the ultrasonic chip.

[0011] The cutting functional part can have a cutting surface facing in a direction at an angle of 90 degrees or less with respect to the longitudinal axis.

[0012] The cutting functional part can have a cutting surface arranged radially outward from the longitudinal axis. The cutting surface can have one or more teeth.

[0013] The protrusion can have a first tapered region, a central region, and a second tapered region. The outer surface of the central region can be made roughly parallel to the longitudinal axis. The central region is the It can be positioned between the first tapered region and the second tapered region. The first tapered region is The second tape can be proximal to the central region and can have a positive slope. The P region can be distal to the central region and can have a negative slope.

[0014] The suction tube lumen may have openings at the distal and proximal ends of the shaft.

[0015] The ultrasonic sleeve assembly is a surgical handpiece with an ultrasonic transducer. They are used together. The ultrasonic sleeve assembly consists of a cutting tip and an irrigation sleeve. It comprises a shaft, a vibration conversion mechanism, a cutting function part, and a raised part. The shaft extends between its proximal and distal ends. The proximal end is the handpiece of the shaft. It has a connecting function part configured to be detachably connected to the case. The proximal end is the first It has a diameter, and the distal end has a second diameter. The first diameter is larger than the second diameter. The vibration conversion mechanism converts the vibration energy transmitted from the ultrasonic transducer along its longitudinal axis. This converts the vibration into a composite vibration consisting of longitudinal vibration and torsional vibration. The suction function is connected to the distal end of the shaft. The suction lumen is defined by the shaft. It is configured to extend along the longitudinal axis of the shaft. The suction lumen is configured so that the shaft is a surgical hose. It is configured to communicate fluidly with the surgical handpiece when connected to it. The origin is located on the shaft and distal to the vibration conversion mechanism. Part of the raised portion is the third straight It has a diameter. The third diameter is smaller than the first diameter. The third diameter is larger than the second diameter. It is large. The raised section is designed to reinforce the shaft. The opening is defined by the raised section. The irrigation sleeve is connected to the suction lumen and fluid. It is configured to surround a portion of the shaft when connected to the dopiece. The irrigation sleeve is Define a lumen with a proximal and distal end. The proximal end of the lumen is detachable from the handpiece. It has a connecting mechanism configured to connect to the irrigation sleeve, which is separate from the lumen. Further define the channel. The irrigation channel has a distal end and a proximal end. The proximal end is configured to be releasably connected to the irrigation source. The irrigation channel is connected via the irrigation port. It is configured to deliver fluid into the lumen. The irrigation port is configured to communicate fluid with the irrigation channel and lumen. ru.

[0016] The coupling function unit consists of multiple connectors configured to connect to the transducer of the handpiece. It can have a mountain.

[0017] The vibration conversion mechanism has one or more helical grooves formed on the outer surface of the shaft. It is possible.

[0018] The cutting function section may have a cutting surface that faces in a direction perpendicular to the longitudinal axis.

[0019] The opening can be positioned radially opposite to the cutting surface.

[0020] The cutting function section may have cutting surfaces arranged radially outward from the longitudinal axis. The cutting surface may have one or more teeth.

[0021] The raised portion may have a first tapered region, a central region, and a second tapered region. The outer surface of the central region can be made roughly parallel to the longitudinal axis. The central region is the It can be positioned between the first tapered region and the second tapered region. The first tapered region is The second tape can be proximal to the central region and can have a positive slope. The P region can be distal to the central region and can have a negative slope.

[0022] The suction tube lumen may have openings at the distal and proximal ends of the shaft.

[0023] An ultrasonic cutting system that produces both longitudinal and torsional motion is a handheld device. It comprises a cutting tip and an irrigation sleeve. The handpiece is housed inside the housing. It has a transducer that is placed inside. The cutting tip is connected to the handpiece and the shaft It comprises a cutting function section and a shaft. The shaft has a distal end and a proximal end. The proximal end is the shaft It has a connecting function part configured to detachably connect to the handpiece. The functional part is connected to the distal end of the shaft. The suction lumen is defined by the shaft. The suction lumen is configured to extend along the longitudinal axis of the shaft. The piece communicates with the fluid. The opening communicates with the suction tube lumen and the proximal and distal ends of the shaft. It is located in between. The opening has a proximal end and a distal end. The irrigation sleeve is connected to the handpiece. The irrigation sleeve encloses a portion of the shaft and has a proximal end and a distal end. The sleeve defines the lumen. The proximal end of the irrigation sleeve is attached to the handpiece. It has a connecting mechanism configured to be detachably connected. The irrigation sleeve has a distal end and a near Further define the irrigation channel having a proximal end. The proximal end of the irrigation channel is irrigated from the irrigation source. It is configured to receive fluid. The inlet communicates with the distal end of the inlet channel. The spout is configured to deliver the irrigation fluid toward the shaft. Distal end of the irrigation sleeve It is located proximal to the distal end of the shaft. The inlet is located along the longitudinal axis relative to the opening. It is located relatively proximal. The distal end of the irrigation sleeve surrounds the entire opening. It is located distal to the distal end of the opening.

[0024] The distal end of the irrigation sleeve extends beyond the distal end of the opening in the distal direction along the longitudinal axis. It is possible.

[0025] The coupling function unit consists of multiple units configured to connect to the transducer of the handpiece. It may have a lanceduce thread.

[0026] The shaft transmits vibrational energy from the transducer along its longitudinal axis. It has a vibration conversion mechanism that converts vibrations into a composite vibration consisting of vibrations in the direction and vibrations in the torsional direction. It is possible.

[0027] The vibration conversion mechanism has one or more helical grooves formed on the outer surface of the shaft. It is possible.

[0028] The cutting function section may have a cutting surface that faces in a direction perpendicular to the longitudinal axis.

[0029] The opening can be positioned radially opposite to the cutting surface.

[0030] The cutting function part may have cutting surfaces arranged radially outward from the longitudinal axis, The cutting surface has one or more teeth.

[0031] The suction tube lumen may have openings at the distal and proximal ends of the shaft.

[0032] The ultrasonic tip, when used with a surgical handpiece, allows for longitudinal and torsional motion. It provides both directional motion, and the surgical handpiece uses ultrasonic transducers. It has a shaft, a cutting function part, and a raised part. It extends between the proximal and distal ends. The proximal end has a first cross-sectional area and a second cross-sectional area. The first cross-sectional area is larger than the second cross-sectional area. The shaft is an ultrasonic transducer. The vibrational energy transmitted from is divided into longitudinal vibrations along the longitudinal axis and torsional vibrations. It has a vibration conversion mechanism that converts the resulting compound vibrations. The cutting function part is located at the distal end of the shaft. It is connected to the shaft. The suction lumen is defined by the shaft. The suction lumen is along the length of the shaft. It is configured to extend along the axis. The suction lumen is mounted in fluid communication with the handpiece. It is configured to be such that the raised portion is located on the shaft, between the distal end and the proximal end. The raised portion is located distal to the vibration conversion mechanism along the longitudinal axis. A part of the raised portion is It has three cross-sectional areas. The third cross-sectional area is smaller than the first cross-sectional area. The third cross-sectional area is Its cross-sectional area is larger than that of 2. The opening is defined by a raised portion and is in fluid communication with the suction lumen. The raised section reinforces the area surrounding the opening.

[0033] The ultrasonic tip is a surgical tip having an ultrasonic transducer located inside a housing. It is used with the endpiece. The ultrasonic tip consists of a shaft and a cutting function part. It comprises a raised portion. The shaft has a distal region, an intermediate region, and a proximal region. The region has a first diameter. The distal region has a second diameter. The first diameter is the second diameter. It is larger than the diameter. The shaft receives the vibration energy transmitted from the ultrasonic transducer. The vibration is converted into a composite vibration consisting of longitudinal vibration along the longitudinal axis and torsional vibration. It has a dynamic conversion mechanism. The cutting function is connected to the distal region of the shaft. The first lumen is It is defined by the shaft. The first lumen extends along the longitudinal axis of the shaft. The first lumen is configured to be mounted in fluid communication with the handpiece. The raised portion is located on the shaft, between the intermediate and distal regions. The intermediate region is the raised portion. It is located between the part and the vibration conversion mechanism. A part of the raised section has a third diameter. The first diameter is smaller than the third diameter, and the third diameter is larger than the second diameter. The opening is the raised part It is defined by the opening, which is in fluid communication with the first lumen. The raised portion is the area surrounding the opening. Reinforce.

[0034] The ultrasonic tip, when used with a surgical handpiece, allows for longitudinal and torsional motion. It produces both directional motion, and the handpiece has an ultrasonic transducer. The ultrasonic tip comprises a shaft, a cutting function part, and a raised part. The shaft is near It extends between the proximal end and the distal end. The proximal end has a first cross-sectional area. The distal end has a second cross-sectional area. It has an area. The first cross-sectional area is larger than the second cross-sectional area. The cutting function part is of the shaft It is connected to the distal end. The suction lumen is defined by the shaft. It is configured to extend along the longitudinal axis. The suction lumen is in fluid communication with the handpiece. It is configured to be placed on top of the shaft. The raised portion is located on the shaft, between the distal end and the proximal end. Place it. A portion of the raised part has a third cross-sectional area. The third cross-sectional area is larger than the first cross-sectional area. It is small. The third cross-sectional area is larger than the second cross-sectional area. The opening is defined by a raised portion. The suction tube lumen is in fluid communication with the suction tube. The raised portion reinforces the area surrounding the opening.

[0035] The ultrasonic tip, when used with a surgical handpiece, allows for longitudinal and torsional motion. It provides both directional motion, and the handpiece is super It has an ultrasonic transducer. The ultrasonic tip has a shaft, a cutting function part, and a raised part. It comprises the following: The shaft has a longitudinal axis extending between the proximal and distal ends. The proximal end is It has a diameter of 1, and the distal end has a second diameter. The first diameter is larger than the second diameter. The cutting function is connected to the distal end of the shaft. The suction lumen is defined by the shaft. The suction lumen is configured to extend along the longitudinal axis of the shaft. It is configured to be mounted in fluid communication with the handpiece. The raised part is on the shaft. It is located between the distal and proximal ends. Part of the raised portion has a third diameter. The diameter is smaller than the first diameter. The third diameter is larger than the second diameter. The opening is raised. It is defined by a section and communicates with the suction lumen and fluid. The raised section reinforces the area surrounding the opening.

[0036] Figures 1 and 2 show how medical professionals can use the removal of biological material from patients. This shows an example configuration of an ultrasonic surgical handpiece assembly 10. The endpiece assembly 10 may include part of the ultrasonic cutting system 12. The handpiece assembly 10 for wave surgery consists of a proximal housing section 22 and a distal housing section 20 The ultrasonic handpiece 11 may have the following: The irrigation sleeve 24 is ultrasonic It can be detachably connected to the distal housing portion 20 of the surgical handpiece 11. The irrigation sleeve 24 and, in this specification, substituted for cutting tip 26 The ultrasonic tip 26 is connected to the ultrasonic handpiece. When connected to S11, at least the length of the ultrasonic tip 26 along the length of the ultrasonic tip 26 The irrigation sleeve 24 can also be configured to surround a portion of the irrigation sleeve 24. The ultrasonic chip 26 may include, at least in part, the ultrasonic sleeve assembly 14. ru.

[0037] Figure 2 shows a cross-sectional view of the ultrasonic surgical handpiece assembly 10 shown in Figure 1. As shown, the ultrasonic handpiece 11 has a distal housing An ultrasonic wave is placed in the space defined by the zing section 20 and the proximal housing section 22. It may have a transducer 32. Deucer 32 comprises a piezoelectric element or magnetostrictive element configured to generate mechanical energy. It is possible to have.

[0038] The ultrasonic handpiece 11 has a distal housing portion 20 and a proximal portion It can be at least partially placed within the space defined by the housing portion 22. It may also have a horn-like portion (horn) 30. The horn-like portion 30 has a distal end and a proximal end. The proximal end of the angular portion 30 can be connected to the distal end of the transducer 32. The transducer 32 can do this. It can be configured to provide ghee to the angular portion 30. Proximal to the proximal housing portion 22 The angular portion 30 extends from the distal end to the proximal end for fluid connection to the nipple 28 at end 16. It can also be configured to define the horn-shaped lumen 31. The nipple 28 is hand Piece 11 can be used to connect to a vacuum source (not shown). Angular lumen 3 1 extends through the ultrasonic handpiece 11 to provide suction to the ultrasonic tip 26. A portion of the passage can be defined.

[0039] The ultrasonic handpiece 11 has a distal housing portion 20 and a proximal portion The irrigation line 33 is further located within the space defined by the housing portion 22. This is possible. The irrigation line 33 extends from the proximal end 16 to the distal end of the ultrasound handpiece 11. It can be configured as follows: The irrigation line 33 is connected to the ultrasonic handpiece 11. The role of the irrigation system is to deliver water from the irrigation system to the irrigation sleeve 24 via the ultrasonic handpiece 11. It can have the following. Note that the irrigation line 33 is connected from the irrigation source (not shown) to the ultrasonic sleeve. The ability to directly route the injection line (i.e., not necessarily via the handpiece) You should understand that (routing is not required).

[0040] The ultrasonic tip 26 is the distal region which is referred to herein alternatively as the distal end 50. 50, the intermediate region 37, and the proximal region which is referred to herein substituted as the proximal end 36. The shaft 48 may have a region 36. The shaft may also have a distal end and a proximal end. It has a proximal region adjacent to the proximal end, and a distal region adjacent to the distal end. The ultrasound tip is It can also have a connecting function part 34 located in the proximal region 36 of the shaft 48, and an ultrasonic tip 2 The proximal region 36 of 6 is connected to the distal end of the horn-shaped portion 30, and the horn-shaped portion 30 is connected to the ultrasonic tip 26 and the machine It is configured to connect. The connecting function part 34 is a corresponding screw on the distal end of the angular part 30. The screw connection portion can be configured to engage with the connecting portion 35. Ultrasonic tip 2 6 is screw-engaged with the angular portion 30 and tightened to a predetermined torque specification, thereby enabling ultrasonic vibration. The top 26 can be detachably fixed to the ultrasonic handpiece 11. As shown in the figure. Although not yet available, it features a quick connection and quarter-turn fitting. The connecting function part 34 can be configured as a quarter-turn fitting or a similar connecting mechanism. This is a possible scenario. The ultrasonic tip 26 is connected to the handpiece 11 to permanently fix it in place. It is also conceivable that the functional part 34 may be composed of, for example, an ultrasonic tip 26, which can be welded, etc. It can be connected to the ultrasonic handpiece 11 by a pin or a similar connection method. Alternatively, the ultrasonic tip 26 and the angular portion 30 can be constructed as a single integrated component. It can be obtained.

[0041] The shaft 48 of the ultrasonic tip 26 extends from the proximal region 36 to the intermediate region 3 It is also possible to configure the system to define the suction lumen 52 extending to the distal region 50 via 7. The suction tube lumen 52 can be oriented approximately parallel to the longitudinal axis, and along the longitudinal axis It can be extended in this way. The suction lumen 52 of the ultrasonic tip 26 is at the corner of the ultrasonic tip 26. When connected to the angular portion 30, it is configured to form a fluid passage together with the lumen 31 of the angular portion 30. This can be done. Unless otherwise specified, the suction lumen 52 is the handpiece 11, in particular The horn-shaped portion 30 can be configured to be placed in fluid communication with the lumen 31. 52 has an opening in the distal region 50 of the shaft 48. Suction tube of the ultrasonic tip 26 The cavity 52 can be configured to provide suction away from the surgical site. Example For example, the suction lumen 52 is designed to move fluids and biological tissue away from the distal end 50 of the ultrasonic tip 26. It can be used to draw air in that direction. The suction tube lumen 52 is defined by the cutting function section 62. It can communicate with a defined lumen and fluid.

[0042] Figure 3 shows a top view of an example configuration of an irrigation sleeve 24 having a distal end 94 and a proximal end. The irrigation sleeve 24 has an irrigation sleeve connecting mechanism 3 on its proximal end. It may have 8. The irrigation sleeve connecting mechanism 38 is located from the proximal end of the irrigation sleeve 24 It may have one or more finger portions 42 extending in the proximal direction. Each of the irrigator sections 42 is radially outward relative to the longitudinal axis 46 of the irrigation sleeve 24. It may have tabs 44 extending in the direction. The finger portion 42 is on the handpiece 11 It connects to the upper female mating part (not shown) to create a snap fit 40 or an interference fit. It acts as a male fitting part configured in such a way. It is conceivable that the irrigation sleeve 24 could be connected to the ultrasonic handpiece 11 using this method. Alternatively, the irrigation sleeve connecting mechanism 38 can be configured as a screw connection.

[0043] Referring to Figure 4, at least a portion of the lumen 70 is defined by the irrigation sleeve 24. A cross-sectional view of the ultrasonic tip 26, which is positioned to the right, is shown. The irrigation sleeve 24 has a proximal end. It can have an irrigation channel 88 having a distal end. It is configured to be connected to the distal end of the ultrasonic handpiece 11 or the irrigation line 33 of the irrigation source. It is possible. The irrigation channel 88 is defined by the lumen 70 of the irrigation sleeve 24. It extends adjacent to and terminates at a flow port 92 located on the surface of the lumen 70, and the irrigation fluid The ultrasonic handpiece 11 is configured to deliver the ultrasonic tip 26 and the surgical site. The position of the distribution port 92 can be changed. For example, the distribution port 92 can be... It can be adjacent to the proximal end of the sleeve 24. Alternatively, the location of the flow opening is at the far end of the sleeve. It can be adjacent to the terminal end.

[0044] Referring to Figure 5, a portion of the distal region of the ultrasonic tip 26 is shown. Ultrasonic tip The shaft 48 has a proximal region 36 and a distal region on the shaft 48 of the ultrasonic tip 26. A raised portion 68 may be located at the midpoint between the region 50 and the other region. The raised portion 68 is an ultrasonic chip It can be configured to extend radially around the shaft 48 of part 26. Section 68 has a first tapered region 76, a central region 80, and a second tapered region 78. This is possible. The central region 80 is between the first tapered region 76 and the second tapered region 78. It is located. In one example configuration, the first taper is relative to the longitudinal axis of the lumen of the shaft. Region 76 may have a positive slope proximal to the raised portion 68, and the second tapered region 78 is The distal side of the raised portion 68 may have a negative slope. The central region 80 has a slope. Furthermore, it can be made parallel to the longitudinal axis 46. In another configuration, the raised portion 68 is the first The transition from the tapered region 76 to the central region 80 and from there to the second tapered region 78 is roughly rounded. It may have a shape or a hemispherical shape. First tapered region 76 and second tapered region 7 The diameter and cross-sectional area of ​​8 are smaller than the diameter and cross-sectional area of ​​the central region 80. In another configuration, The protruding portion 68, although not shown, can have other polyhedral shapes. The raised portion 68 is From the first tapered region 76 to the central region 80, and from the central region 80 to the second tapered region 78, the taper gradually increases. It can be configured to have a progressive transition section. The progressive transition section of the raised section 68 , the occurrence of additional stress points in shaft 48, which is highly likely to malfunction during ultrasonic vibration. This reduces the ease of transfer. In addition, the gradual transition section allows the fluid to flow from the inlet 92. From between the irrigation sleeve 24 and the ultrasound tip 26, relatively distal to the ultrasound tip 26 Disturbance in the fluid flow pattern centered on the ultrasonic tip 26 when moving in direction 50 is prevented. This is because the gradual transition could potentially cause damage to the ultrasonic tip 26. This also makes it possible to use the ultrasonic tip 26 at high power without subjecting it to high stress. The transition section is designed to allow the ultrasonic tip 26 to operate at the optimal frequency, according to the properties of the shaft 48. This can also be improved.

[0045] The shaft 48 has a sharp step from a length related to diameter D4 to a length related to diameter D5. There should be no abrupt step from the length related to diameter D3 to the length related to D5. This is possible. The absence of steep steps means that the angle of inclination in each transition area is such that This means that the angle is less than 10 degrees or 5 degrees relative to the outer surface of T48.

[0046] The ultrasonic tip 26 may further have an opening 66 within the shaft 48. 8 typically defines an opening 66 in the central region 80 of the raised portion 68. The opening 66 is the suction tube lumen 5 It is in fluid communication with 2. The axis of the opening 66 is transverse to the longitudinal axis 46 of the ultrasonic tip 26. This is possible. In one configuration, the axis of the opening 66 can be perpendicular to the longitudinal axis 46. It is possible. The diameter of the opening 66 is smaller than the diameter of the suction tube lumen 52.

[0047] The raised portion 68 reinforces the area of ​​the shaft 48 near the opening 66. In that case, the opening 66 weakens the strength of the shaft 48, so the raised portion 68 By increasing the third diameter D3 of the shaft 48, the ultrasonic tip 26 during use The structural integrity of the ultrasonic tip 26 when subjected to ultrasonic motion in the torsional and longitudinal directions is improved. It can be helpful in raising the level.

[0048] The cutting function section 62 and the suction tube lumen opening 72 can be located at the distal end of the shaft 48. Figures 8 and 9 show the distal region 50 and / or cutting function section 62 of the shaft 48 opening. This shows the suction tube lumen opening 72. The suction tube lumen opening 72 allows excess fluid and / or It can be used to remove biological debris from the surgical site.

[0049] In a particular configuration, the dimensions of the raised portion 68 are determined based on the dimensions of the opening 66. Example For example, the axial length of the central region 80 is 200% to 1000% larger than the diameter of the opening 66. It can be made into this. In other configurations, the axial length of the central region 80 is the same as the opening 66. It can be 500% to 800% larger than the diameter. Similarly, the first tapered region The lengths of the first and second tapered regions (76, 78) can also be related to the diameter of the opening 66. For example, the axes of the first tapered region 76, the central region 80, and the second tapered region 78. When the lengths of the two sides are matched, the result is 15,000% to 24,000% larger than the diameter of the opening 66. This allows for a precise balance between stress reduction and cutting performance. This is reliably achieved in the chip.

[0050] For example, the length of the raised portion 68 (i.e., the distance between line 6E and line 6F in Figure 6A) The distance can be approximately 2 mm, and in other configurations it can be 1 mm to 6 mm. The axial length (length at D4 to length at D5) and radial thickness of the raised portion 68 are as follows: This can be related to the amount of material removed to create the opening. For example, the diameter of the opening 66 If the size is increased, the diameter and thickness of the raised portion 68 will increase. Conversely, if the opening 66 If the diameter is made smaller, the thickness and length of the raised portion 68 will also be reduced.

[0051] Figures 7 and 8 show the shaft 48 and the distal region 50 and proximal region 3 located on the shaft 48. The ultrasonic tip 26 is shown, which includes a raised portion 68 located between 6 and 6. As shown in Figure 6A, distal to the vibration conversion mechanism 60 along the longitudinal axis 46 The shaft 48 is positioned such that the first diameter D1 in the intermediate region 37 is greater than the first diameter D1 in the raised portion 68. It can have a third diameter D3 that is smaller and larger than the second diameter D2 in the distal region 50. ru.

[0052] As shown in Figures 6A to 7, the diameter of the ultrasonic tip 26 is proximal to the shaft 48. It differs in the range from region 36 through intermediate region 37 to distal region 50. Shaft 4 8 has a first diameter D1 and a second diameter D2, and the first diameter D1 is equal to the second diameter D It is greater than 2. Diameter D1 is located within the intermediate region 37 of shaft 48, and diameter D2 is located within the It is located within the distal region 50 of the shaft.

[0053] The shaft 48 extends along the longitudinal axis 46 from the proximal region 36 through the intermediate region 37 to the distal region The diameter can be generally tapered up to 50. For example, the diameter of the shaft 48 It decreases as it moves distally along the shaft 48 from the proximal region 36 to the distal region 50. This is possible. One of the advantages provided by the tapered shaft 48 is Therefore, since the size of the tip decreases as it approaches the proximal end, when using the ultrasonic tip 26 One potential benefit is that it can improve the user's line of sight.

[0054] The shaft 48 is made of metal materials such as titanium alloy or stainless steel, or composite materials, depending on the application. It can be made from non-metallic materials such as phosphates. In one example, the shaft 46 and ultrasonic chip pp26 refers to integral, unitary, and one-piece parts. This is possible. In another example, the distal end 50 of the ultrasonic tip 26 has a screw thread (not shown), etc. It can be attached to the shaft 48 by a suitable mechanism. The metal is a high-power ultrasonic configuration. It should be understood that this is known in terms of the technology related to the parts. Also, shaft 48 and The distal diameter 50 of the ultrasound tip 26 is suitable for working with small patient mouth openings, for example. It should be understood that the diameter is relatively small, less than 1 centimeter (1 cm). Furthermore, the shaft 48 and ultrasonic tip 26 are made larger depending on the application. It should be understood that it can be adjusted to be or less than that.

[0055] Referring to Figure 6A, the ultrasonic tip 26 receives signals from the ultrasonic transducer 32. The vibrational energy is composed of longitudinal vibrations along the longitudinal axis 46 and torsional vibrations. The intermediate region 37 is further equipped with a vibration conversion mechanism 60 that converts into a compound vibration. It is distal to 0. The vibration conversion mechanism 60 has one or more helical shapes on the surface of the shaft 48. It may have grooves 71. One or more of these grooves 71 are as shown in the figure. It can be installed so as to surround the circumferential surface of the shaft 48. The vibration conversion mechanism 60 is a tra The longitudinal vibrations transmitted from the reducer 32 through the angular portion 30 are transmitted to the ultrasonic tip 26. The longitudinal vibration in the direction of the longitudinal axis 46 and the longitudinal axis 46 of the ultrasonic tip 26 as a fulcrum It functions to convert vibrations into a complex vibration composed of vibrations in the acting torsional direction. The mechanism can take on other forms that are better suited to converting longitudinal motion into compound motion. It should be understood that in these alternative forms, the cross-sectional shape of the shaft 48 is non It can be made symmetrical. For details on the vibration conversion mechanism, see U.S. Patent No. 6,497,71 This can be found in No. 5, No. 6,955,680, and No. 6,984,220. These patents, in their entirety, constitute part of this specification by reference.

[0056] Figure 6A shows the shaft 48 and the cutting function unit 62 connected to the distal region 50 of the shaft 48. The ultrasonic tip 26 equipped with is also shown. The cutting function unit 62 cuts or It can be part of the ultrasonic tip 26 to be cut. Different cutting machines within a certain range The function unit 62 can be connected to the distal end 50 of the shaft 48. In one example, a cutting function The part 62 has a cutting surface 64 that faces a direction at an angle of 90 degrees or less relative to the longitudinal axis 46. It may have. The terms cutting surface and cutting face are interchangeable in this specification. It can be used. The cutting surface 64 has its center relative to the opening 66. It can be positioned in a manner that is opposite to T48. The cutting function part is in the twisting direction. It can be configured to cut by movement.

[0057] As shown in Figures 6B to 6F, the shaft 48 is in the intermediate region 3 at position D1. The cross-sectional area of ​​7 can be made larger than the cross-sectional area at position D2. Figure 6B shows Figure 6C shows the cross-sectional area of ​​shaft 48 at position D1. Figure 6C shows the shaft at D2. Figure 6D shows the cross-sectional area of ​​shaft 48 at position D3. The area is shown, and the opening 66 is also shown. As shown in Figure 6E, the cross-sectional area of ​​D4 This is smaller than the cross-sectional area of ​​D3. Figure 6F shows the cross-sectional area at position D5. Figure 6 When B to Figure 6F are viewed together, the cross-sectional area at position D3 near the raised portion 68 is, Larger than the cross-sectional area at positions D4 and D5 adjacent to the proximal and distal directions of the raised portion. This indicates that the shaft 48 has various cross-sectional areas, which means that various cross-sectional areas along its length The strength of shaft 48 will differ at different positions. Generally, at a given position, A larger cross-sectional area of ​​the shaft 48 results in a thicker wall and higher strength.

[0058] As described above, the opening 66 weakens the strength of the shaft 48. Cross-sectional area of ​​the raised portion 68 When the aperture is large, the weakness caused by the aperture 66 is overcome, and the ultrasonic tip 26 can be set to a high power setting. It can be used without damage due to increased stress. The cross-sectional area of ​​the raised portion 68 is not defective. While maintaining the stress characteristics necessary to avoid deficiency, the minimum necessary to avoid deficiency It can be configured to have an area while maintaining a line of sight.

[0059] As shown in Figure 8, the shaft 48 of the ultrasonic tip 26 has different thicknesses. The suction tube lumen 52 remains constant from the distal region 50 through the intermediate region 37 to the proximal region 36. Assuming it has a diameter of , the thickness of the shaft 48 in the opening 66 is directly adjacent to the opening. It is greater than the thickness of shaft 48 in the area. In other words, the central area 80 The thickness of the shaft 48 in the first tapered region 76 and the second tapered region 78 is The shaft is larger than the thickness of the shaft 48. In the central region 80 where the opening 66 is located, the shaft By increasing the thickness of the 48, the strength of the shaft 48 can be improved.

[0060] As shown in Figure 4, the irrigation sleeve 24 and the ultrasonic tip When 26 is connected to the handpiece 11, it is configured to surround a portion of the shaft 48. The irrigation sleeve 24 has a lumen 70. The irrigation sleeve 24 has a proximal end 36 and a distal end 9 It has 4. The proximal end 36 of the sleeve 24 is detachably connected to the handpiece 11. It has a connecting mechanism 38 configured to do so. The irrigation sleeve defines the irrigation channel 88. , separate from the lumen 70. The irrigation channel 88 has a distal end and a proximal end, and the irrigation channel The proximal end of the RU88 is configured to be releasably connected to an irrigation source (not shown). The channel 88 can deliver fluid to the lumen 70 via the inlet 92. The inlet 92 is Fluid communication can be established between the irrigation channel 88 and the lumen 70.

[0061] In a particular configuration, the fluid is supplied from an irrigation source (not shown) through an irrigation channel 88. The fluid can flow into the port 92. The irrigation port 92 supplies the fluid to the lumen 70 of the irrigation sleeve 24. The fluid in the lumen 70 of the irrigation sleeve 24 flows distally toward the cutting tip 26. It can be done. While the fluid is flowing toward the cutting tip 26, a portion of the fluid rises up. The fluid can enter the suction tube lumen 52 through the opening 66 on part 68. The fluid flowing through the opening 66 is This helps to lower the temperature of the cutting tip 26, and the surgical handpiece assembly 10 This can improve the performance. Furthermore, it can also lower the temperature of the sleeve 24. This can help prevent the tissue in contact with the outer surface of the sleeve from being unexpectedly heated. To prevent this from happening.

[0062] The irrigation sleeve 24 can be made from any polymer, such as a thermoplastic resin. The distal end 94 of the irrigation sleeve 24 is cut or to change the length of the irrigation sleeve 24. It may have a portion of a fragile part that can be cut off.

[0063] The irrigation channel 88 is in fluid communication with the handpiece 11 and / or irrigation source (not shown). This is possible. The opening 66 on the shaft 48, the irrigation channel 88, and the opening 66 The position of the distal end 94 of the leaf 24, the combination of the irrigation port 92 and the suction tube lumen 52, The cooling performance of the ultrasonic tip 26 is improved. In addition, the combination mentioned above improves the ultrasonic performance. The cooling of the wave tip 26 is improved, and the longitudinal and torsional motion of the ultrasonic tip 26 is improved. This prevents deformation or melting of the irrigation sleeve 24 due to excess heat.

[0064] As shown in Figure 9, the irrigation sleeve 24 uses ultrasound along the length of the ultrasonic tip. It surrounds a portion of the tip 26. The distal end 94 of the irrigation sleeve 24 is ultrasonically connected along the longitudinal axis 46. It extends toward the distal region 50 of the tip 26. The distal end 94 of the irrigation sleeve 24 has an opening 6 It can extend beyond 6. The opening 66 may have a proximal end and a distal end. The distal end 94 of the irrigation sleeve 24 extends beyond both the proximal and distal sides of the opening 66. In other words, the opening 66 is where the ultrasonic tip and sleeve 24 are connected to the handpiece 11. When inserted, it is completely covered by sleeve 24. The fluid inside the lumen 70 is ultrasonic tip 2 This helps to cool 6 and sleeve 24.

[0065] The ultrasonic tip 26 efficiently stimulates bone through twisting or longitudinal movement of the instrument tip. It becomes possible to remove it precisely. The cutting function section 62 is a cutting surface that assists in such removal. It can have 64A. However, the ultrasonic tip 26 has longitudinal and torsional directions. Alternatively, with a transducer that vibrates in a combination of longitudinal and torsional motion. It should be understood that it can be used for this purpose. Furthermore, in some examples, ultrasonic tips can be used for this purpose. It lacks a vibration conversion mechanism.

[0066] The twist-cutting tip has a cutting function for bone, bony protuberances, calcified tumors, cartilage, cartilaginous material, and intervertebral discs. The device is effective in removing these when it comes into contact with other lesions, especially external Neurosurgical, spinal surgery, orthopedic surgery, which involve internal and external osteotomy after the superficial cortex has been removed. During plastic surgery / reconstructive surgery, ear, nose, and throat surgery, and other surgeries involving the above-mentioned tissues. It is particularly useful in that context.

[0067] It is understood that the cutting function section 62 of the ultrasonic tip 26 may have multiple configurations. Figure 10 Referring to Figures A through 10E, various exemplary configurations of the cutting function section 62 of the ultrasonic tip 26 are shown. The cutting function section 62 may have a cutting surface 64, and the cutting surface 64 is 1 It has more than one set of teeth 65. The teeth 65 can be arranged on the cutting surface 64, and the teeth 65 are ultrasonic The wave tip 26 is directed radially outward from its longitudinal axis 46. For a particular configuration, The surface of the cutting function is substantially parallel to the central axis of the distal end 50 of the device and offset However, the position of the cutting surface 64 can be varied in virtually unlimited ways.

[0068] Referring to Figure 10B, the first configuration of the cutting function unit 62 is shown. Cutting function unit 62 The first configuration consists of a plurality of teeth 6 arranged radially around the distal end 50 of the shaft 48. It includes a cutting surface 64B having 5. For example, the teeth 65 are on the longitudinal axis 46 of the ultrasonic tip 26. It can be configured to face radially outward, and the teeth 65 are located at the distal end of the shaft 48. They are arranged in a circumferential manner. At least some of the teeth extend distally.

[0069] Alternatively, Figure 10C shows a second configuration of the cutting function unit 62. The second configuration is a circle having multiple teeth 65 that are oriented outward from the longitudinal axis of the ultrasonic tip 26. It includes a cutting surface 64C having an arc-shaped or semi-cylindrical shape.

[0070] Figure 10D shows the third configuration of the cutting function unit 62. The ultrasonic tip 26 has multiple teeth 65 that are oriented outward from the longitudinal axis and are arc-shaped or semi-circular. It includes a cutting surface 64D having a cylindrical shape. The cutting surface 64D is the cutting surface of the ultrasonic tip 26. It is roughly offset from the shaft 48 and perpendicular to the longitudinal axis 46 of the ultrasonic tip 26. It is directed.

[0071] Figure 10E shows the fourth configuration of the cutting function unit 62. The ultrasonic tip 26 has multiple teeth 65 that are oriented outward from the longitudinal axis and are arc-shaped or semi-circular. It includes a cutting surface 64E having a cylindrical shape. The cutting surface 64E is the cutting surface of the ultrasonic tip 26. It is roughly offset from the shaft and oriented perpendicular to the longitudinal axis 46 of the ultrasonic tip 26. It is attached. U.S. Patent No. 8,512,340 and U.S. Publication No. 2018 / 0103976 Other suitable cutting functions, including those listed in the issue, are also possible, and these can be pulled as a whole. This document shall, by application, form part of this specification.

[0072] The above description discusses several examples. However, the examples discussed herein are not intended to be exhaustive or to limit the present invention to any particular form. For example, while the illustrative configuration describes the surgical instrument as an ultrasonic handpiece, it is also conceivable that the features and concepts described for the ultrasonic handpiece may be applied to other medical or surgical instruments. This also applies to ultrasonic tips, which may further include blades, drill bits, rotary burs, open-window shavers, etc. The terms used are intended to be descriptive and not limiting. In view of the above teachings, many modifications and variations are possible, and the present invention may be carried out in ways other than those specifically described. (Note) (Note 1) An ultrasonic tip, used with a surgical handpiece to produce both longitudinal and torsional motion, wherein the handpiece has an ultrasonic transducer located within a housing, and the ultrasonic tip is A shaft having a longitudinal axis extending between a proximal end and a distal end, wherein the proximal end has a first diameter, the distal end has a second diameter, the first diameter is larger than the second diameter, and the shaft has a vibration conversion mechanism that converts vibration energy transmitted from an ultrasonic transducer into a composite vibration consisting of longitudinal vibration along the longitudinal axis and torsional vibration, A cutting function unit connected to the distal end of the shaft, A suction lumen, defined by the shaft, configured to extend along the longitudinal axis of the shaft, and configured to be mounted in fluid communication with the handpiece, A raised portion located on the shaft, situated between the distal end and the proximal end, wherein the raised portion is located distal to the vibration conversion mechanism along the longitudinal axis, and a portion of the raised portion has a third diameter, the third diameter being smaller than the first diameter and the third diameter being larger than the second diameter, An opening, defined by the raised portion, which is in fluid communication with the suction lumen, and the raised portion reinforces the area surrounding the opening, An ultrasonic tip equipped with this feature. (Note 2) The ultrasonic tip according to Appendix 1, wherein the proximal end of the shaft has a connecting function portion configured to detachably connect the shaft to the transducer of the handpiece. (Note 3) The ultrasonic tip as described in Appendix 2, wherein the connecting function part has a plurality of threads configured to connect to the transducer of the handpiece. (Note 4) The vibration conversion mechanism is an ultrasonic tip as described in Appendix 1, having one or more helical grooves formed on the outer surface of the shaft. (Note 5) The axis of the opening is transverse to the longitudinal axis of the ultrasonic tip, as described in Appendix 4. (Note 6) The cutting function part is an ultrasonic tip as described in Appendix 1, having a cutting surface that faces a direction at an angle of 90 degrees or less with respect to the longitudinal axis. (Note 7) The ultrasonic tip as described in Appendix 1, wherein the cutting function portion has cutting surfaces arranged radially outward from the longitudinal axis, and the cutting surfaces have one or more teeth. (Note 8) The ultrasonic tip as described in Appendix 1, wherein the raised portion comprises a first tapered region, a central region, and a second tapered region, the outer surface of the central region is generally parallel to the longitudinal axis, the central region is positioned between the first tapered region and the second tapered region, the first tapered region is proximal to the central region and has a positive inclination, and the second tapered region is distal to the central region and has a negative inclination. (Note 9) The ultrasonic tip as described in Appendix 1, wherein the suction lumen has openings at the distal and proximal ends of the shaft. (Note 10) An ultrasonic sleeve assembly for use with a surgical handpiece having an ultrasonic transducer, wherein the ultrasonic sleeve assembly is Cutting tip, A shaft, extending between a proximal end and a distal end, the proximal end having a connecting function configured to detachably connect the shaft to the handpiece, the proximal end having a first diameter, the distal end having a second diameter, the first diameter being larger than the second diameter, and the shaft having a vibration conversion mechanism that converts vibration energy transmitted from the ultrasonic transducer into a composite vibration consisting of longitudinal vibration along the longitudinal axis and torsional vibration, A cutting function unit connected to the distal end of the shaft, A suction lumen, defined by the shaft and configured to extend along the longitudinal axis of the shaft, and configured to be in fluid communication with the surgical handpiece when the shaft is connected to the surgical handpiece, A raised portion located on the shaft and distal to the vibration conversion mechanism, wherein a portion of the raised portion has a third diameter, the third diameter being smaller than the first diameter and larger than the second diameter, and the raised portion is configured to reinforce the shaft. The aforementioned raised portion defines an opening that communicates fluid with the suction tube lumen, A cutting tip having, An irrigation sleeve, wherein the irrigation sleeve and the cutting tip are configured to surround a portion of the shaft when connected to the handpiece, the irrigation sleeve defines a lumen having a proximal end and a distal end, and the proximal end of the lumen has a connecting mechanism configured to be detachably connected to the handpiece, Equipped with, The irrigation sleeve further defines an irrigation channel separate from the lumen, the irrigation channel having a distal end and a proximal end, the proximal end of the irrigation channel being configured to be releasably connected to an irrigation source, the irrigation channel being configured to deliver fluid to the lumen via an irrigation port, the irrigation port being in fluid communication with the irrigation channel and the lumen. Ultrasonic sleeve assembly. (Note 11) The ultrasonic sleeve assembly according to Appendix 10, wherein the connecting function part has a plurality of threads configured to connect to the transducer of the handpiece. (Note 12) The vibration conversion mechanism is an ultrasonic sleeve assembly according to Appendix 10, having one or more helical grooves formed on the outer surface of the shaft. (Note 13) The ultrasonic sleeve assembly according to Appendix 10, wherein the cutting function part has a cutting surface facing in a direction perpendicular to the longitudinal axis. (Note 14) The ultrasonic sleeve assembly according to Appendix 13, wherein the opening is located in the radially opposite direction to the cutting surface. (Note 15) The ultrasonic sleeve assembly according to Appendix 10, wherein the cutting function portion has cutting surfaces arranged radially outward from the longitudinal axis, and the cutting surfaces have one or more teeth. (Note 16) The ultrasonic sleeve assembly according to Appendix 10, wherein the raised portion has a first tapered region, a central region, and a second tapered region, the outer surface of the central region is generally parallel to the longitudinal axis, the central region is positioned between the first tapered region and the second tapered region, the first tapered region is proximal to the central region and has a positive inclination, and the second tapered region is distal to the central region and has a negative inclination. (Note 17) The ultrasonic sleeve assembly according to Appendix 10, wherein the suction lumen has openings at the distal and proximal ends of the shaft. (Note 18) An ultrasonic cutting system that provides both longitudinal and torsional motion, A handpiece having a transducer located inside the housing, A cutting tip connected to the aforementioned handpiece, A shaft having a distal end and a proximal end, the proximal end having a connecting function portion configured to detachably connect the shaft to the handpiece, A cutting function unit connected to the distal end of the shaft, A suction lumen, defined by the shaft, configured to extend along the longitudinal axis of the shaft, and having fluid communication with the handpiece, An opening that is in fluid communication with the suction tube lumen and is located between the proximal end and the distal end of the shaft, the opening having a proximal end and a distal end, A cutting tip having, An irrigation sleeve, which is connected to the handpiece, the irrigation sleeve encloses a portion of the shaft, has a proximal end and a distal end, the irrigation sleeve defines a lumen, and the proximal end of the irrigation sleeve has a connecting mechanism configured to detachably connect the irrigation sleeve to the handpiece, Equipped with, The irrigation sleeve further defines an irrigation channel having a distal end and a proximal end, the proximal end of the irrigation channel being configured to receive irrigation fluid from an irrigation source, An irrigation port, which is in fluid communication with the distal end of the irrigation channel, and is configured to deliver irrigation fluid toward the shaft, Equipped with, The distal end of the irrigation sleeve is located proximal to the distal end of the shaft, The aforementioned inlet is located relatively proximal to the opening along the longitudinal axis, An ultrasonic cutting system wherein the distal end of the irrigation sleeve is distal to the distal end of the opening such that the irrigation sleeve surrounds the entire opening. (Note 19) The ultrasonic cutting system according to Appendix 18, wherein the distal end of the irrigation sleeve extends distally along the longitudinal axis beyond the distal end of the opening. (Note 20) The ultrasonic cutting system according to Appendix 18, wherein the connecting function unit has a plurality of threads configured to connect to the transducer of the handpiece. (Note 21) The ultrasonic cutting system according to Appendix 18, wherein the shaft has a vibration conversion mechanism that converts vibration energy transmitted from the transducer into a composite vibration consisting of longitudinal vibration along the longitudinal axis and torsional vibration. (Note 22) The ultrasonic cutting system according to Appendix 21, wherein the vibration conversion mechanism has one or more helical grooves formed on the outer surface of the shaft. (Note 23) The ultrasonic cutting system according to Appendix 18, wherein the cutting function unit has a cutting surface that faces in a direction perpendicular to the longitudinal axis. (Note 24) The ultrasonic cutting system according to Appendix 23, wherein the opening is located in the radially opposite direction to the cutting surface. (Note 25) The ultrasonic cutting system according to Appendix 18, wherein the cutting function unit has cutting surfaces arranged radially outward from the longitudinal axis, and the cutting surfaces have one or more teeth. (Note 26) The ultrasonic cutting system according to Appendix 18, wherein the suction tube lumen has openings at the distal end and the proximal end of the shaft. (Note 27) An ultrasonic tip, used with a surgical handpiece to produce both longitudinal and torsional motion, wherein the handpiece has an ultrasonic transducer, and the ultrasonic tip, A shaft, extending between a proximal end and a distal end, wherein the proximal end has a first cross-sectional area, and the distal end has a second cross-sectional area, the first cross-sectional area being larger than the second cross-sectional area, and the shaft has a vibration conversion mechanism that converts vibration energy transmitted from the ultrasonic transducer into a composite vibration consisting of longitudinal vibration along the longitudinal axis and torsional vibration, A cutting function unit connected to the distal end of the shaft, A suction lumen, defined by the shaft, configured to extend along the longitudinal axis of the shaft, and configured to be mounted in fluid communication with the handpiece, A raised portion located on the shaft, situated between the distal end and the proximal end, wherein the raised portion is located distal to the vibration conversion mechanism along the longitudinal axis, and a portion of the raised portion has a third cross-sectional area, the third cross-sectional area being smaller than the first cross-sectional area and the third cross-sectional area being larger than the second cross-sectional area, An opening, defined by the raised portion, in fluid communication with the suction lumen, the raised portion reinforcing the area surrounding the opening, An ultrasonic tip equipped with this feature. (Note 28) An ultrasonic tip for use with a surgical handpiece having an ultrasonic transducer located within a housing, A shaft having a distal region, an intermediate region, and a proximal region, wherein the intermediate region has a first diameter, the distal region has a second diameter, the first diameter is larger than the second diameter, and the shaft has a vibration conversion mechanism that converts vibration energy transmitted from the ultrasonic transducer into a composite vibration consisting of longitudinal vibration along the longitudinal axis and torsional vibration, A cutting function unit connected to the distal region of the shaft, A first lumen, defined by the shaft, configured to extend along the longitudinal axis of the shaft, and configured to be mounted in fluid communication with the handpiece, A raised portion, located on the shaft, situated between the intermediate region and the distal region, the intermediate region situated between the raised portion and the vibration conversion mechanism, a portion of the raised portion having a third diameter, the third diameter being smaller than the first diameter and the third diameter being larger than the second diameter, An opening, defined by the raised portion, which is in fluid communication with the first lumen, and the raised portion reinforcing the area surrounding the opening, An ultrasonic tip equipped with this feature. (Note 29) An ultrasonic tip, used with a surgical handpiece to produce both longitudinal and torsional motion, wherein the handpiece has an ultrasonic transducer, and the ultrasonic tip, A shaft extending between a proximal end and a distal end, wherein the proximal end has a first cross-sectional area, and the distal end has a second cross-sectional area, and the first cross-sectional area is greater than the second cross-sectional area, A cutting function unit connected to the distal end of the shaft, A suction lumen, defined by the shaft, configured to extend along the longitudinal axis of the shaft, and configured to be mounted in fluid communication with the handpiece, A raised portion located on the shaft, situated between the distal end and the proximal end, wherein a portion of the raised portion has a third cross-sectional area, the third cross-sectional area being smaller than the first cross-sectional area and the third cross-sectional area being larger than the second cross-sectional area, An opening, defined by the raised portion, which is in fluid communication with the suction lumen, and the raised portion reinforces the area surrounding the opening, An ultrasonic tip equipped with this feature. (Note 30) An ultrasonic tip, used with a surgical handpiece to produce both longitudinal and torsional motion, wherein the handpiece has an ultrasonic transducer located within a housing, and the ultrasonic tip is A shaft having a longitudinal axis extending between a proximal end and a distal end, wherein the proximal end has a first diameter, the distal end has a second diameter, and the first diameter is greater than the second diameter. A cutting function unit connected to the distal end of the shaft, A suction lumen, defined by the shaft, configured to extend along the longitudinal axis of the shaft, and configured to be mounted in fluid communication with the handpiece, A raised portion located on the shaft, situated between the distal end and the proximal end, wherein a portion of the raised portion has a third diameter, the third diameter being smaller than the first diameter and the third diameter being larger than the second diameter, An opening, defined by the raised portion, which is in fluid communication with the suction lumen, and the raised portion reinforces the area surrounding the opening, An ultrasonic tip equipped with this feature.

Claims

1. An ultrasonic sleeve assembly for use with a surgical handpiece having an ultrasonic transducer, wherein the ultrasonic sleeve assembly is Cutting tip, A shaft comprising a distal end, a proximal end, and a vibration conversion mechanism disposed between the distal end and the proximal end, wherein the proximal end has a connecting function portion configured to detachably connect the shaft to the handpiece, and the vibration conversion mechanism converts the vibration energy transmitted from the ultrasonic transducer into a composite vibration consisting of longitudinal vibration along the longitudinal axis of the shaft and torsional vibration, The cutting function unit located at the distal end of the shaft, A suction lumen, defined by the shaft, configured to extend along the longitudinal axis of the shaft, and configured to be mounted in fluid communication with the handpiece, An opening that is in fluid communication with the suction tube lumen and is located between the proximal end and the distal end of the shaft, the opening having a proximal end and a distal end, A cutting tip having, An irrigation sleeve, wherein the irrigation sleeve is configured to surround a portion of the shaft when the irrigation sleeve and the cutting tip are connected to the handpiece, the irrigation sleeve has a proximal end and a distal end, and the proximal end of the irrigation sleeve has a connecting mechanism configured to removably connect the irrigation sleeve to the handpiece, Equipped with, The irrigation sleeve further defines an irrigation channel having a distal end and a proximal end, the proximal end of the irrigation channel being configured to receive irrigation fluid from an irrigation source, The irrigation sleeve further has an irrigation port that is in fluid communication with the distal end of the irrigation channel and is configured to deliver the irrigation fluid toward the shaft, The irrigation sleeve and the cutting tip are connected to the handpiece when the irrigation sleeve and the cutting tip are connected to the handpiece. The distal end of the irrigation sleeve is located proximal to the distal end of the shaft, The inlet is located along the longitudinal axis between the opening and the vibration conversion mechanism. The distal end of the irrigation sleeve is distal to the distal end of the opening such that the irrigation sleeve surrounds the entire opening. An ultrasonic sleeve assembly configured as follows.

2. The ultrasonic sleeve assembly according to claim 1, wherein the distal end of the irrigation sleeve is configured to extend distally along the longitudinal axis beyond the distal end of the opening when the irrigation sleeve and the cutting tip are connected to the handpiece.

3. The ultrasonic sleeve assembly according to claim 1 or 2, wherein the connecting function portion has a plurality of threads configured to connect to the ultrasonic transducer of the handpiece.

4. The ultrasonic sleeve assembly according to claim 3, wherein the vibration conversion mechanism has one or more helical grooves formed on the outer surface of the shaft.

5. The ultrasonic sleeve assembly according to any one of claims 1 to 4, wherein the cutting function part has a cutting surface that faces in a direction perpendicular to the longitudinal axis.

6. The ultrasonic sleeve assembly according to any one of claims 1 to 4, wherein the cutting function portion has cutting surfaces arranged radially outward from the longitudinal axis, and the cutting surfaces have one or more teeth.

7. The ultrasonic sleeve assembly according to claim 5 or 6, wherein the opening is located in a radially opposite direction to the cutting surface.

8. The ultrasonic sleeve assembly according to any one of claims 1 to 7, wherein the suction lumen has openings at the distal end and the proximal end of the shaft.

9. It has a raised portion located on the shaft, between the proximal end and the distal end, The ultrasonic sleeve assembly according to any one of claims 1 to 8, wherein the raised portion defines the opening and has a first tapered region, a central region, and a second tapered region, the central region being located between the first tapered region and the second tapered region, the first tapered region being proximal to the central region and having a positive inclination, and the second tapered region being distal to the central region and having a negative inclination.

10. The handpiece having the transducer, An ultrasonic cutting system comprising the ultrasonic sleeve assembly according to any one of claims 1 to 9, which is connected to the handpiece.

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