CN215503273U - Handle connecting mechanism of ultrasonic scalpel - Google Patents

Abstract

The utility model discloses a handle connecting mechanism of an ultrasonic scalpel, which comprises: the connector, the sliding block, the ball cap, the spring or the wave spring, the adjusting nut and the ball; the connector is of a sleeve-shaped connecting structure, the head of the connector is provided with a plurality of counter bores for mounting balls, and the inner pipe of the cutter is connected with the balls without disengagement after the cutter is mounted; the middle of the connector is provided with a connecting platform, and the tail part of the connector is provided with threads; the head of the connector is also provided with a chamfer with a guiding function; the sliding block is provided with a flange, and the flange is provided with a flange inner hole; the right end of the flange is provided with a spring or a wave spring; the inner hole of the flange is in clearance fit with the right shaft of the connector, and the sliding block can slide along the right shaft of the connector so as to press the spring or the wave spring to move right; an adjusting nut is arranged on the right side surface of the wave spring or the spring and used for adjusting pre-tightening pressure; the inner hole of the ball cap is in clearance fit with the left end shaft of the connector, and a spring or a wave spring is arranged between the right end of the ball cap and the left end of the flange.

Description

Handle connecting mechanism of ultrasonic scalpel

Technical Field

The utility model belongs to the technical field of medical instruments, and relates to a handle connecting mechanism of an ultrasonic scalpel.

Background

The ultrasonic scalpel adopts ultrasonic energy to be used for hemostatic separation and tissue coagulation of soft tissues in various endoscopic surgeries and conventional surgeries. With the popularization of minimally invasive surgery, the ultrasonic scalpel becomes a conventional surgical instrument and is widely applied.

The ultrasonic scalpel system on the market at present is composed of a main machine (an ultrasonic generator), a handle, a scalpel and a transducer, wherein the scalpel needs to be installed by means of an external torque wrench (wired pedals are optional), the handle, the scalpel and the transducer need to be assembled before an operation, and the ultrasonic scalpel system is installed on the main machine and then used. The volume is large, the installation is complicated, the matching dispersion of the host, the transducer and the knife system is large, and the consistency of the performance of the ultrasonic knife is poor and the failure rate is high.

Specifically, current supersound sword installation is very loaded down with trivial details, need use torque wrench, has six steps of operation: 1. the transducer is inserted into the handle; 2. rotating the cutter; 3. inserting a torque wrench; 4. rotating the torque wrench; 5. withdrawing the torque wrench; 6. and powering on and starting the host.

Specifically, the existing cutter has poor performance consistency, large electromagnetic interference and high system failure rate. The architecture of common ultrasonic blade systems on the market requires that the blade/handle, transducer and host can be blindly mated/fully interchanged. This requirement has extremely high requirements on quality control of each link of production, resulting in poor general consistency in surgery (when no fault exists, performance difference between cutters is extremely large) and high fault rate (one cutter cannot be used for surgery).

SUMMERY OF THE UTILITY MODEL

In order to solve the technical defects, the utility model provides a handle connecting mechanism of an ultrasonic scalpel.

The handle of the utility model integrates the transducer of the main machine (ultrasonic generator) and the handle (grab handle) into a whole, and can be used for operation after being quickly connected with the cutter, thereby realizing quick installation.

The utility model designs a brand new system architecture, and the system is basically composed of an integrated handle, a cutter and a power adapter (a wireless control pedal is an option). Wherein, the integrative handle has integrated host computer (supersonic generator), transducer, handle (grab handle) and torque wrench. Before the operation, only the cutter is simply and quickly arranged on the handle. The new system architecture greatly improves the consistency of the system in terms of design and provides guarantee for reducing the failure rate of products.

The utility model provides a low electromagnetic interference ultrasonic scalpel handle, which comprises: a handle shell, a gear button and a handle; the head part of the handle shell is provided with a handle connecting mechanism which is used for connecting with a cutter; the handle is arranged at the front part of the handle shell and is used for controlling the opening and closing of the cutter clamp.

In the utility model, a cavity is arranged in the handle shell, and a display screen, an NFC coil, a transformer, an energy converter, a control board, a power board and an elastic contact are arranged in the cavity;

in the handle shell, the transducer is electrically connected with the handle through the elastic contact.

The elastic contact is assembled on the handle and is in contact with the circuit board at the tail end of the transducer, so that electric transmission is realized; the design of the elastic contact ensures that the pressure of the contact is 20-200g when the transducer moves forwards to the extreme position. The elastic contact is effectively connected with the circuit board, and the friction between the tail end circuit board and the elastic contact is not too large when the transducer rotates.

The left end of the middle shell of the transducer is in interference fit with the front shell, and the amplitude transformer is fixed through a rubber ring and/or a rubber pad; the right end of the transducer middle shell is fixed with the circuit board through screws. The circuit board is provided with two small holes, the lead is connected with the lead of the amplitude transformer conducting sheet, the amplitude transformer lead penetrates through the small holes on the circuit board and then is welded with the circuit board, and the welding after the perforation is convenient for installation.

The display screen in the handle is connected with the control panel through a display screen FPC (flexible printed circuit) wire, and the display screen FPC integrates a display screen wire, a key control wire, a horn wire and an NFC (near field communication) antenna;

the control panel is connected with the power panel through a control panel FPC wire, and a power line and a control signal line are integrated;

the display screen FPC wire and the control panel FPC wire are attached to the inner surface of the handle shell;

the transformer is connected with the elastic contact through a power line, the path of the lead is short, and the electromagnetic radiation is low;

the tail end of the handle is provided with a connecting socket, so that the handle is convenient to insert and pull out and can be disinfected.

The utility model also provides a handle connecting mechanism, which comprises: the connector, the sliding block, the ball cap, the spring or the wave spring, the adjusting nut and the ball;

the connector is of a sleeve-shaped part structure, the head of the connector is provided with a plurality of counter bores, the middle of the connector is provided with a connecting platform, and the tail of the connector is provided with threads; the head of the connector is also provided with a chamfer with a guiding function;

the sliding block is provided with a flange, and the flange is provided with a hole;

the hole is matched with the connector and can drive the sliding block to move axially rightwards so as to press the spring to move rightwards;

the inner hole of the flange of the sliding block is in clearance fit with the right shaft of the connector, the sliding block can slide along the axial direction of the connector, and the right end of the flange of the sliding block is provided with a wave spring or a spring;

the adjusting nut is arranged on the right side surface of the wave spring or the spring and is used for adjusting pre-tightening pressure;

the inner hole of the ball cap is in clearance fit with the left end shaft of the connector, and a spring is arranged between the right end of the ball cap and the left end of the flange of the sliding block; balls are arranged in a plurality of counter bores at the head part of the left end of the connector, so that the inner tube is not disconnected with the balls after the cutter is installed. Preferably, the number of the counter bores is 3-6.

The adjusting nut has an outer diameter knurling and/or a hexagon, and is used for adjusting the pre-tightening force of the wave spring or the spring.

The adjusting nut is provided with 1-3 uniformly distributed small holes for dispensing after the installation and adjustment are finished and preventing looseness.

The utility model also provides an ultrasonic surgical knife, and the tail end of the inner tube of the knife is of a closing structure, so that the knife can be conveniently guided and quickly positioned when being connected with the handle of the ultrasonic surgical knife.

The utility model also provides an ultrasonic scalpel system with a stably connected cutter and a handle, which comprises the cutter, the ultrasonic scalpel handle with low electromagnetic interference and a power adapter; the connecting socket at the tail end of the handle of the ultrasonic scalpel with low electromagnetic interference is detachably connected with the power adapter.

Based on the ultrasonic scalpel system, the utility model also provides a using method of the ultrasonic scalpel system, and the method comprises the following steps:

step 1: inserting the sleeve of the cutter into the elastic sheet type knob, and pressing the elastic pressing sheet when resistance exists;

step 2: the cutter or the outer ring of the knob is rotated clockwise, the cutter bar screw hole is screwed into the transducer screw clockwise, the inner pipe of the cutter pushes the ball to be lifted until the ball is clamped into the groove of the inner pipe; the end surface of the cutter bar is abutted against the end surface of the amplitude transformer rod of the transducer, the outer ring of the torque button is continuously rotated clockwise, when a preset torque is reached, the gear ring of the outer ring and the elastic sheet of the inner ring slide relatively, the flange of the elastic sheet is lifted up and falls down, and the torque transmission is completed; loosening the spring sheet type knob, and finishing the installation of the handle and the cutter;

and step 3: the handle plug is inserted into the power adapter to be connected with a power supply, the function key is pressed, the handle NFC is communicated with the cutter NFC chip at the moment, the cutter is subjected to code identification, the output power is matched according to the code of the cutter, and after the communication matching is finished, the operation can be carried out;

and 4, step 4: the operator selects the working mode through the function key; pressing the handle to excite the front button to realize tissue cutting, stopping exciting the front button after cutting, and releasing the handle;

and 5: disconnecting the power supply of the adapter, taking down the handle cable plug from the adapter, pressing the elastic pressing sheet, rotating the outer ring of the knob anticlockwise, loosening the cutter arbor and the transducer screw, and holding the outer pipe of the cutter by hand to pull out the cutter after the cutter arbor screw hole is completely separated from the transducer amplitude transformer screw; and after the cutter is separated from the handle, the finger stops pressing the elastic pressing sheet.

The step 1 comprises the following steps: sleeving a handle protection sleeve on the handle; said step 5 is followed by: the handle protective sleeve is detached; and/or the presence of a gas in the gas,

the step 3 comprises the following steps: sleeving a protection sleeve on the spring sheet type knob; and in the step 5, the handle cable plug is pulled out of the protective sleeve after being taken down from the adapter, so that the protective sleeve is separated from the elastic sheet type knob.

The integrated handle provided by the utility model is provided with the ultrasonic generator, the transducer and the torque wrench, and has small volume and light weight of only 100-400 g.

The ultrasonic scalpel handle provided by the utility model is simple to assemble and good in stability, the length of a power line is reduced, and electromagnetic radiation and electromagnetic interference are reduced.

The connecting mechanism provided by the utility model is stable in connection, the cutter is not easy to fall off after being connected with the handle, and the installation is convenient.

Drawings

FIG. 1 is a schematic view of the construction of an ultrasonic surgical blade system of the present invention.

Fig. 2 is an exploded view of the handle of the ultrasonic surgical blade of the present invention.

FIG. 3 is a partial structural view of the handle of the ultrasonic surgical blade with the outer shell removed according to the present invention.

Fig. 4 is a schematic view of the structure of the connector of the present invention.

Fig. 5 is a schematic view of the structure of the connector of the present invention.

Fig. 6 is a schematic structural view of the inner tube closing-in of the cutter of the utility model.

FIG. 7 is a schematic view of the transducer and handle attachment configuration of the present invention.

Fig. 8 is a schematic diagram of the construction of a transducer of the present invention.

Fig. 9 is a schematic diagram of the construction of a transducer of the present invention.

Fig. 10 shows the routing manner of the internal circuit board according to the present invention.

FIG. 11 is a schematic view of the slider configuration of the present invention.

Detailed Description

The present invention will be described in further detail with reference to the following specific examples and the accompanying drawings. The procedures, conditions, experimental methods and the like for carrying out the present invention are general knowledge and common general knowledge in the art except for the contents specifically mentioned below, and the present invention is not particularly limited.

In fig. 1-10, 1000, handle, 10, transformer, 20, transducer, 30, adjusting nut, 40, wave spring, 50, ball cap, 60, spring, 70, spring, 80, slide block, 90, ball, 100, connector, 110, right shell, 120, rubber cover, right, 130, PCB group (power board), 140, top cover, 150, through window, 160, function key, 170, display screen, 180, knob outer ring, 200, spring sheet, 201, front shell, 202, rubber ring, 203, rubber pad, 204, screw, 205, horn core, 206, middle shell, 207, rear sealing ring, 208, transducer rear circuit board, 209, screw, 210, knob inner sleeve, 211, elastic contact, 220, NFC bracket group, 230, horn, 240, pin, 250, torsion spring, 260, press rod, 270, pin, 280, front key group, 290, front key, 300, handle, 310, press frame, 320, 330, press frame pin, 330, press frame pin, 340. The transformer power line comprises a rubber cover, a left shell, a pin shaft, a hinge, a PCB (control panel), a socket protective sleeve, a socket, a cutter, a sleeve, a cutter rod, a clamping set, a clamp, an inner tube, a control panel FPC (flexible printed circuit) and a display screen FPC (flexible printed circuit), wherein the rubber cover comprises a left cover, a left shell, a pin shaft, a hinge, a 380 PCB set (control panel), a 400 socket protective sleeve, a socket, a clamp and a 500 cutter, the sleeve comprises a sleeve, a 505 cutter rod, a 507 clamp set, an inner tube, a 600 control panel FPC, a 610 display screen FPC and a 620 transformer power line.

The utility model relates to a connecting mechanism of a handle and a cutter

The utility model discloses a mechanism for reliable connection, which is a necessary condition for realizing normal work of a system and can ensure that a cutter is reliably connected with a handle, as shown in figure 4.

Specifically, the handle connector 100 is a key part for connecting the handle and the tool 500, the connector 100 is installed in a flange hole of the slider 80, the tool is embedded and connected with a groove of the tool inner tube 510 through a ball in a counter bore at the front end of the connector, when the handle 300 rotates counterclockwise around the shaft 240, the hinge 370 is driven, the pressure of the return spring 60 is overcome through the pin shaft 240, the slider 80 is driven to move rightwards, the slider is driven to move rightwards through the wave spring to the nut, the connector is driven to move rightwards, the ball in the connector drives the tool inner tube to move rightwards, the tool inner tube drives the tool clamp to make the tool clamp contact with the tool holder, and the first stage realizes the clamp closing. And in the second stage, the clamp is in contact with the cutter head, when the handle continues to rotate, the slide block moves rightwards to press the spring, the spring is compressed at the moment and forms spring pressure, the pressure is transmitted to the connector through the nut, the connector is transmitted to the clamp through the inner pipe of the cutter, the clamp transmits force to the cutter rod, and pressure is formed between the cutter rod and the clamp, and the force is clamping force. Resetting: the handle is opened and the spring 60 urges the slider to return. A spring is arranged at the right end of the spherical cap and the left end of the flange of the sliding block, so that the balls in the counter bores of the connectors are reliably connected with the grooves of the inner tube, the balls do not separate from the grooves during working, teeth of the pressing rod of the rubber sheet 120 are pressed to be embedded into knurled teeth of the transducer when the cutter is dismounted, the knob is rotated, the connectors reset under the thrust of the spring, and the balls can separate from the grooves of the inner tube of the cutter at the moment. The tool inner tube is restrained and released, the transducer screw is unscrewed, and the connecting tool can be taken down from the handle. In this embodiment, the diameter of the inner tube of the cutter is 6.7 mm.

Connector and related parts of the utility model

A connector: the connector of the utility model is designed to be a sleeve-shaped part structure, as shown in fig. 5, the connector is provided with four counter bores (three to six can be used) 100C, a connecting table 100B is arranged in the middle, a thread 100A is arranged at the tail part, a chamfer 100E has a guiding function, a limiting surface of a spring is arranged on the left side of a boss 100D, and the right side of the boss is contacted with a sliding block 80. (fig. 4) specifically, a slider 80 is installed on the right side of the connector 100, the slider has a flange 80A, the flange has a hole 80B, the hole 80B is in clearance fit with the small diameter of the right side of the connector, so that the slider can be driven to move axially to the right to press the spring 40 to move to the right and provide a pressing force, the right end of the slider is provided with a wave spring 40 or a common spring which is abutted against the right end surface of the slider, the right end surface of the spring is provided with an adjusting nut 30, the nut can adjust the pre-tightening pressure of the spring, and the nut can simultaneously meet the pre-tightening force of the spring 40 adjusted by hand or by a wrench.

After the tool is installed, the ball is pressed into the groove of the inner tube 510 of the tool, and a spring is arranged between the ball cap and the left end of the flange of the sliding block to prevent the ball from being separated.

Elastic contact of transducer tail: the transducer transmits an electric signal to excite the piezoelectric ceramic piece through two cables, the handle is provided with two elastic contact elements 211 which are assembled on the handle, the contact elements are kept in contact with a circuit board at the tail part of the transducer, and the electric transmission is realized. The length of the power line is reduced, and electromagnetic radiation and electromagnetic interference are reduced.

Specifically, the method comprises the following steps: as shown in fig. 8, the horn is held in interference fit by the left and right center housings 207 to the front housing. The lead is welded with the amplitude transformer lead, and the amplitude transformer lead is welded with the circuit board after passing through the small holes 208A and 208B of the circuit board 208; the hole and the lead are welded and sealed, and then the circuit board is fixedly assembled with the middle shell through screws.

The circuit board distribution and wiring in the handle: as shown in fig. 10, the display FPC line 610 is connected to the control board 380, and the display FPC integrates a display line, a key control line, a horn line, and an NFC antenna;

the control board is connected with the power board through a control board FPC (flexible printed circuit) line 600, and a power line and a control signal line are integrated;

the transformer 10 is connected with the elastic contact 211 through a transformer power line 620, the path of the conducting wire is short, and the electromagnetic radiation is low;

the use method of the ultrasonic knife provided by the utility model comprises the following steps:

the sleeve (connector) of the cutter 500 is inserted into the torque button (spring plate type knob), the 8 convex ribs of the sleeve are inserted into the 8 grooves of the inner sleeve of the torque button, when resistance exists, the cutter bar 505 is contacted with the end face of the transducer screw 204, and at the moment, the thumb and the forefinger press the rubber sheets 120 and 340 simultaneously.

The knurled teeth of the film 120/340 are in contact with the knurled teeth of the transducer front shell 201, the transducer 20 is restricted in rotation, the film deforms and presses the tail of the pressing rod 260, and the pressing rod 260 rotates around the shaft 270.

Clockwise rotating the cutter 500 or the handle torque button outer ring 180, clockwise screwing the screw hole of the cutter bar 505 into the transducer screw 204, pushing the ball in the counter bore of the handle connector by the inner tube 510 of the cutter to lift up, when the inner tube is abutted against the connecting platform 100B on the inner wall of the connector, the ball falls down and is clamped into the groove of the inner tube 510, continuously rotating the cutter to drive the slider to move to the right integrally, the ball cap is not changed under the action of the spring to abut against the right end face of the button core, the ball is clamped into the groove of the ball cap, at the moment, the end face of the cutter bar 505 is abutted against the end face 205 of the transducer amplitude changing rod, clockwise rotating the torque button outer ring 180, the torque function of the button torque works, the torque button drives the cutter 500 to be screwed tightly with the transducer screw, the torque is transmitted to the end faces of the cutter bar and the transducer, the specified torque is realized, the torque ensures that the cutter is reliably connected with the transducer, loosening the thumb and the film are separated from the transducer front shell knurled teeth, the transducer is recovered to be rotatable, the handle and the cutter are installed completely, the protective sleeve is sleeved, finally the handle plug is inserted into the adapter, the power supply of the adapter is connected, after the preparation is completed, the front button 290 and the function key 160 are excited to check the system condition, the front button 290 loudspeaker 230 is excited to send out an excitation prompt tone and press the function key 160, at the moment, the handle NFC220 is communicated with the NFC chip of the cutter to carry out coding identification on the cutter, the output power is matched according to the coding of the cutter, after the communication matching is completed (after the cutter is installed, the main control chip in the handle is successfully communicated with the NFC chip of the cutter in a handshaking mode, various cutter head information in the NFC chip is read, after the information is successfully read and is effective, the main control chip in the handle judges that the cutter head is an effective cutter head, and the matching procedure is considered to be completed, it may enter standby waiting for the firing operation. ) The system may perform a surgical procedure. The operator may select the operational mode, which is viewable on the display 150, via the function keys 160. When the system is out of order, the speaker 230 will send out alarm prompt sound, and the display 150 will prompt fault code.

When the system is in operation, the handle 300 is pressed, the handle is centered on the pin 240, the hinge 370 is driven, the slide block 80 is driven by the pin 270 to move to the right against the elastic force of the return spring 60, the slide block 80 drives the nut 30 by the wave spring 40, the nut 30 is connected with the connector 100 into a whole, the connector 100 moves to the right, the ball in the connector drives the inner tube 510 of the cutter, the inner tube 510 drives the clamp 507 to rotate anticlockwise around the pin, the clamp contacts with the cutter bar 505, the handle 300 is continuously pressed, since the jaw 507 is stopped from rotating by the resistance of the knife bar 510, the inner tube 510 stops moving, the slider 80 continues to move right to press the wave spring 40 (spring) to be compressed and transmit the compression force to the nut 30, the nut 30 connector 100 transmits the wave spring 40 pressing force to the knife inner tube 510, the inner tube 510 transmits the force to the jaw 507, the jaw presses the force to the knife bar 505, and thus, the pressure is formed between the knife bar 505 and the jaw 507, and the force is the clamping force. If the tissue is between the forceps holder 507 and the knife bar 505, the key 290 can be activated, the control board 380 transmits the electricity of the power board to the ceramic wafer of the transducer amplitude transformer 205 through the elastic contact member 211, the ceramic wafer generates high-frequency ultrasonic vibration, the ultrasonic vibration is transmitted to the knife head through the amplitude transformer in an amplifying way, so as to realize the cutting of the tissue, (the key on the front key 290 is a high-power key mainly used for cutting the tissue, the key on the lower key is a low-power key mainly used for blood vessel coagulation), when the tissue is cut off or the blood vessel is coagulated, the key 290 is stopped to be activated, the handle 300 is released, at the moment, under the action of the reset spring 60, the slider 80 moves the wave spring 40 to the left to reset, the slider 80 moves to the left continuously and drives the connector 100 to reach the forceps holder 507 through the knife inner tube 510, the forceps holder 507 is opened, and the closing and opening cycle is completed. The above processes are repeated for a plurality of times to complete the operation (there are also cases of not closing the clamp 507 and activating the button 290 to cut, which are not separately described).

Disassembling the cutter: disconnecting the power supply of the adapter, taking down the handle cable plug from the adapter, pulling out the protective sleeve, enabling the protective sleeve to be separated from the knob, pressing the films 120 and 340, rotating the torque button outer ring 180 anticlockwise, loosening the cutter arbor 505 and the transducer screw 204, completely separating the arbor screw hole and the transducer amplitude transformer screw 204, holding the cutter 500 outer tube to pull out the cutter, after the cutter is separated from the handle, stopping pressing the films by fingers, detaching the handle protective sleeve, and finishing the detachment. The cutter, the protective sleeve and the handle protective sleeve are disposable, and the handle is cleaned, sterilized and reused.

It should be understood that the term "and/or" as used in the present invention is only one type of association relationship describing the associated object, and means that there may be three types of relationships, for example, a and/or B, which may mean: a exists alone, A and B exist simultaneously, and B exists alone. In addition, the character "/" herein generally indicates that the former and latter related objects are in an "or" relationship.

It should be noted that, in the present invention, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or system that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or system. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other like elements in a process, method, article, or system that comprises the element.

The drawings are referred to for clarity of description of the utility model and not to limit the scope of the claims. For example, the angle of the inner tube of FIG. 6 is 45 degrees and the size of the groove is not limited to 45 degrees, the diameter of the counter bore of FIG. 3 is 2.8mm and is not limited to 2.8mm, and the number of balls in FIG. 4 is not limited to 4.

The protection of the present invention is not limited to the above embodiments. Variations and advantages that may occur to those skilled in the art may be incorporated into the utility model without departing from the spirit and scope of the inventive concept, which is set forth in the following claims.

Claims (4)

1. An ultrasonic surgical blade handle attachment mechanism, said handle attachment mechanism comprising: the device comprises a connector (100), a sliding block (80), a ball cap (50), a spring or a wave spring, an adjusting nut (30) and a ball (90); wherein,

the connector is of a sleeve-shaped connecting structure, the head of the connector is provided with a plurality of counter bores (100C) for mounting the ball, and the inner pipe of the cutter is ensured not to be disconnected from the ball after the cutter is mounted;

the middle of the connector is provided with a connecting table (100B), and the tail part of the connector is provided with a thread (100A);

the head of the connector is also provided with a chamfer (100E) with a guiding function;

the slide block (80) has a flange (80A) provided with a flange inner hole (80B); a spring or a wave spring (60) is arranged at the right end of the flange (80A);

the flange inner hole (80B) is in clearance fit with the right shaft of the connector, and the sliding block can slide along the right shaft of the connector so as to press the spring or the wave spring to move right;

the adjusting nut (30) is arranged on the right side face of the wave spring or the spring and is used for adjusting pre-tightening pressure;

the inner hole of the ball cap (50) is in clearance fit with the left end shaft of the connector, and a spring or a wave spring is arranged between the right end of the ball cap and the left end of the flange (80A).

2. The ultrasonic surgical blade handle attachment mechanism of claim 1, wherein 3-6 of the counterbores (100C) are provided.

3. The ultrasonic surgical blade handle attachment mechanism of claim 1 wherein the adjustment nut has an outer diameter knurl and/or a hex shape for adjusting the pre-load of the wave spring or springs.

4. The ultrasonic surgical blade handle connection mechanism of claim 1, wherein the adjusting nut has 1-3 evenly distributed small holes for dispensing and preventing loosening after installation and adjustment.

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