CN102458271B - Coupling arrangements and methods for attaching tools to ultrasonic surgical instruments - Google Patents

Coupling arrangements and methods for attaching tools to ultrasonic surgical instruments Download PDF

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Publication number
CN102458271B
CN102458271B CN201080032636.4A CN201080032636A CN102458271B CN 102458271 B CN102458271 B CN 102458271B CN 201080032636 A CN201080032636 A CN 201080032636A CN 102458271 B CN102458271 B CN 102458271B
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China
Prior art keywords
waveguide
tools
distal portions
cavity
surgical technique
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Expired - Fee Related
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CN201080032636.4A
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Chinese (zh)
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CN102458271A (en
Inventor
S·A·涅尔德
D·T·克鲁玛纳克
A·C·沃伊吉尔
万山
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Ethicon Endo Surgery Inc
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Ethicon Endo Surgery Inc
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Priority claimed from US12/469,308 external-priority patent/US20100298743A1/en
Priority claimed from US12/469,293 external-priority patent/US9700339B2/en
Application filed by Ethicon Endo Surgery Inc filed Critical Ethicon Endo Surgery Inc
Publication of CN102458271A publication Critical patent/CN102458271A/en
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Classifications

    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61BDIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00Surgical instruments, devices or methods, e.g. tourniquets
    • A61B17/22Implements for squeezing-off ulcers or the like on the inside of inner organs of the body; Implements for scraping-out cavities of body organs, e.g. bones; Calculus removers; Calculus smashing apparatus; Apparatus for removing obstructions in blood vessels, not otherwise provided for
    • A61B17/22004Implements for squeezing-off ulcers or the like on the inside of inner organs of the body; Implements for scraping-out cavities of body organs, e.g. bones; Calculus removers; Calculus smashing apparatus; Apparatus for removing obstructions in blood vessels, not otherwise provided for using mechanical vibrations, e.g. ultrasonic shock waves
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61BDIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00Surgical instruments, devices or methods, e.g. tourniquets
    • A61B2017/0046Surgical instruments, devices or methods, e.g. tourniquets with a releasable handle; with handle and operating part separable
    • A61B2017/00473Distal part, e.g. tip or head
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61BDIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00Surgical instruments, devices or methods, e.g. tourniquets
    • A61B2017/00477Coupling
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61BDIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00Surgical instruments, devices or methods, e.g. tourniquets
    • A61B17/22Implements for squeezing-off ulcers or the like on the inside of inner organs of the body; Implements for scraping-out cavities of body organs, e.g. bones; Calculus removers; Calculus smashing apparatus; Apparatus for removing obstructions in blood vessels, not otherwise provided for
    • A61B17/22004Implements for squeezing-off ulcers or the like on the inside of inner organs of the body; Implements for scraping-out cavities of body organs, e.g. bones; Calculus removers; Calculus smashing apparatus; Apparatus for removing obstructions in blood vessels, not otherwise provided for using mechanical vibrations, e.g. ultrasonic shock waves
    • A61B17/22012Implements for squeezing-off ulcers or the like on the inside of inner organs of the body; Implements for scraping-out cavities of body organs, e.g. bones; Calculus removers; Calculus smashing apparatus; Apparatus for removing obstructions in blood vessels, not otherwise provided for using mechanical vibrations, e.g. ultrasonic shock waves in direct contact with, or very close to, the obstruction or concrement
    • A61B2017/22014Implements for squeezing-off ulcers or the like on the inside of inner organs of the body; Implements for scraping-out cavities of body organs, e.g. bones; Calculus removers; Calculus smashing apparatus; Apparatus for removing obstructions in blood vessels, not otherwise provided for using mechanical vibrations, e.g. ultrasonic shock waves in direct contact with, or very close to, the obstruction or concrement the ultrasound transducer being outside patient's body; with an ultrasound transmission member; with a wave guide; with a vibrated guide wire
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61BDIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00Surgical instruments, devices or methods, e.g. tourniquets
    • A61B17/32Surgical cutting instruments
    • A61B17/320068Surgical cutting instruments using mechanical vibrations, e.g. ultrasonic
    • A61B2017/320069Surgical cutting instruments using mechanical vibrations, e.g. ultrasonic for ablating tissue
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61BDIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00Surgical instruments, devices or methods, e.g. tourniquets
    • A61B17/32Surgical cutting instruments
    • A61B17/320068Surgical cutting instruments using mechanical vibrations, e.g. ultrasonic
    • A61B2017/320072Working tips with special features, e.g. extending parts
    • A61B2017/320073Working tips with special features, e.g. extending parts probe
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61BDIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00Surgical instruments, devices or methods, e.g. tourniquets
    • A61B17/32Surgical cutting instruments
    • A61B17/320068Surgical cutting instruments using mechanical vibrations, e.g. ultrasonic
    • A61B2017/320089Surgical cutting instruments using mechanical vibrations, e.g. ultrasonic node location

Abstract

An ultrasonic surgical instrument that has a waveguide that protrudes distally from the handpiece and a surgical tool that is configured to be coupled to the waveguide. The waveguide may have a distal end that is sized to be inserted into a cavity in a proximal end of the surgical tool and then selectively expanded to retain the distal end within the cavity to couple the surgical tool to the waveguide.

Description

Instrument is attached to connecting device and the method for ultrasonic surgical instrument
Technical field
The present invention relates generally to a kind of surgical instruments, more particularly, relates to a kind of for surgical technique and tools being attached to connecting device and the method for ultrasonic surgical instrument.
Background technology
Ultrasonic surgical instrument is used to treat safely and effectively many diseases.This apparatus generally includes the handpiece that is connected to supersonic signal generator.Described apparatus also comprises the end effector that receives supersonic vibration.In the time transferring to organic organization and use suitable end effector with suitable energy level, supersonic vibration can be used for excising, dissects, draws high, cauterize tissue or for muscular tissue is separated with skeleton.Owing to can transfer to by waveguide the amount of the ultrasonic energy of surgical end-effector from ultrasonic transducer, use the ultrasonic instrument of real core technology especially favourable.This type of apparatus can be for open surgery or Minimally Invasive Surgery, for example endoscopic surgery or laparoscopic surgery, and wherein end effector arrives surgical site through the trocar.
Conventionally the transducer, supporting in handpiece by electric excitation in surgical end-effector causes supersonic vibration.Transducer can be made up of one or more piezoelectric elements or magnetostriction element.The vibration that transducer portion produces transfers to surgical end-effector via the ultrasound waveguide that extends to surgical end-effector from transducer portion.Waveguide and end effector are designed to the frequency resonance identical with transducer.Therefore,, in the time that end effector is connected to transducer, the frequency of the frequency of whole system and transducer self is identical.
Real core ultrasonic surgical instrument can be divided into two types, has the apparatus and the apparatus with multicomponent end effector of unit piece end effector.The apparatus with unit piece end effector comprises the apparatus such as dissecting knife and spherical coagulator.The use of multicomponent end effector (for example clamped coagulation device) comprises tissue is pressed in to the mechanism on ultrasound knife.Ultrasonic clamping coagulator is provided for cutting/coagulating tissue, the ultrasonic surgical instrument of the especially loose improvement without supporting tissue, wherein ultrasound knife uses together with tissue being applied to the fixture of compression stress or bias force, make tissue condense and cut sooner and decay that ultrasound knife moves less.Surgery position adjuster is the apparatus for helping to be conducive at operation process positioning and removal soft tissue.Surgery position adjuster is used that muscle is separated with skeleton conventionally.Cobb formula or spatula (curette) formula surgery position adjuster, for spinal operation, especially contributes to enter that at rear portion muscular tissue is removed from skeleton.
No matter the type of the end effector adopting how, end effector must be effectively connected to waveguide.In some devices, end effector is permanently connected in waveguide by for example welding.In other device, end effector can be removed and is connected in waveguide by screw device.This end effector has torque spanner conventionally, in the time of correct use, torque spanner is designed to guarantee that end effector is attached to waveguide by the torsion of appropriate amount, avoids the probability due to the damage that excessive torque application is caused to end effector or plant failure simultaneously.This spanner can be designed to far-end or the part of interface with end effector.In some wrench device, on the far-end that spanner is positioned over to end effector time, clinician is applied to spanner by torsion until hear the click sound that can hear, and now spanner can be removed from end effector.
Although use this torque spanner can effectively guarantee to have set up being fixedly connected with on acoustics between waveguide and end effector, described torque spanner can during preparing surgical technique and tools and outer section office, lose or mistake is put.In addition, torque spanner is generally used for end effector to separate with on handpiece, needs clinician after completing surgical operation, to arrange torque spanner or other instrument.In addition,, if clinician can not correctly use described torque spanner, exist the connection between end effector and waveguide to be not enough to for optimum, the sound of desired amount be moved and is transferred to the risk of end effector.
Be desirable to provide a kind of ultrasonic surgical instrument of the some shortcomings that overcome current apparatus and end effector connecting device.The various embodiment of ultrasonic surgical instrument overcome these deficiencies.
Summary of the invention
One total aspect, each embodiment relates to a kind of ultrasonic surgical instrument, it has the handpiece that can operatively support at least one ultrasonic transducer.Described surgical instruments comprises surgical technique and tools, and it has near-end, and described near-end has cavity therein.Waveguide is outstanding towards distally from described handpiece, and interacts with described at least one ultrasonic transducer.Waveguide has distal portions, and the size of described distal portions is customized in the cavity in the near-end that is inserted into described surgical technique and tools, and optionally expands to engage with cavity formation retentivity.
According to other embodiments of the invention, a kind of ultrasonic surgical instrument is provided, it has handpiece, and described handpiece has can operatively be supported on housing wherein by least one ultrasonic transducer.Described ultrasonic transducer can be operatively coupled to supersonic signal generator.Waveguide is outstanding towards distally from described housing, and interacts with described ultrasonic transducer.Described waveguide has the distal portions can selectivity expanding.Actuator rod can be supported in described waveguide movably, and movable between primary importance and the second position, and in described primary importance, described distal portions expands, and in the described second position, described distal portions does not expand.Described surgical instruments also comprises surgical technique and tools, and it has proximal part, and described proximal part has cavity therein, to hold the described distal portions of described waveguide.
According to other embodiments of the invention, provide a kind of for surgical technique and tools being connected to movingly to the method in the waveguide of ultrasonic surgical instrument.In various version, described method comprises: in the proximal part of described surgical technique and tools, cavity is set; And the far-end of described waveguide is inserted in described cavity.Described method also comprise by the described far-end of described waveguide expand with retentivity engage at least a portion of the wall of described cavity.
Brief description of the drawings
The novel feature of multiple embodiment have been described in detail in appended claims.But in conjunction with following describe and following accompanying drawing could understand best multiple embodiment (relevant operation organization and method) with and other objects and advantages:
Fig. 1 shows the ultrasonic system of various embodiments of the present invention;
Fig. 2 shows the connecting device embodiment of the present invention of the waveguide for surgical technique and tools being connected to ultrasonic surgical instrument;
Fig. 2 A shows another connecting device embodiment of the present invention of the waveguide for surgical technique and tools being connected to ultrasonic surgical instrument;
Fig. 2 B shows another connecting device embodiment of the present invention of the waveguide for surgical technique and tools being connected to ultrasonic surgical instrument;
Fig. 3 shows another connecting device embodiment of the present invention of the waveguide for surgical technique and tools being connected to ultrasonic surgical instrument;
Fig. 3 A is another diagram of the connecting device of Fig. 3, and a part for described waveguide is in swelling state;
Fig. 3 B shows another connecting device embodiment of the present invention of the waveguide for surgical technique and tools being connected to ultrasonic surgical instrument;
Fig. 4 shows another connecting device embodiment of the present invention of the waveguide for surgical technique and tools being connected to ultrasonic surgical instrument;
Fig. 5 is another diagram of the connecting device of Fig. 4, and wherein a part for surgical technique and tools outer housing illustrates in cutaway view mode, and latch member is in unswollen state;
Fig. 6 is another diagram of the connecting device of Fig. 4, and the latch member of wherein said connecting device is in swelling state;
Fig. 7 is the side view of another handpiece embodiment of the present invention.
Fig. 8 is the end-view of the handpiece of Fig. 7.
Fig. 9 is the end-view of another surgical technique and tools embodiment of the present invention;
Figure 10 is the side view of Fig. 9 Chinese and foreign department instrument.
Figure 11 shows another connecting device embodiment of the present invention of the waveguide for surgical technique and tools being connected to ultrasonic instrument, and the cover part of wherein said surgical technique and tools illustrates in cutaway view mode;
Figure 12 is another cutaway view intercepting along different lines of cut of the connecting device of Figure 11, and the latch member that described connecting device is shown is in swelling state;
Figure 13 shows another connecting device embodiment of the present invention of the waveguide for surgical technique and tools being connected to ultrasonic surgical instrument;
Figure 14 shows the power of the connecting device embodiment for describing at Figure 13 to a kind of form of time graph;
Figure 15 is the exploded assembling diagram of handpiece of the present invention and surgical technique and tools embodiment, and a part for described handpiece and a part for described surgical technique and tools illustrate in the mode of cutaway view;
Figure 16 is the handpiece of Figure 16 and another broken section of surgical technique and tools point de-assembly diagram, wherein their orientations in connecting;
Figure 17 is the handpiece of Figure 15 and Figure 16 and another broken section of surgical technique and tools point de-assembly diagram, wherein their orientations in having connected;
Figure 18 is the cutaway view of the heating and cooling unit of the connecting device embodiment that describes in Figure 15-17;
Figure 19 is another cutaway view of the heating and cooling unit of Figure 18, and the outer housing of wherein said surgical technique and tools is just being mounted thereon;
Figure 20 is another cutaway view of the heating and cooling unit of Figure 18 and 19, engages wherein said outer housing and its retentivity;
Figure 21 shows the ultrasonic system of various embodiments of the present invention;
Figure 22 shows another connecting device embodiment of the present invention of the waveguide for surgical technique and tools being connected to ultrasonic surgical instrument, engages the far-end of wherein said waveguide and described surgical technique and tools retentivity; And
Figure 23 shows the connecting device embodiment describing in the Figure 22 before the far-end of waveguide expands.
Detailed description of the invention
Before describing multiple embodiment in detail, should be noted that, the application of embodiment or use are not limited to structure and the layout of the parts that are shown specifically in the drawings and specific embodiments.Exemplary embodiment can be implemented separately, or is combined enforcement with other embodiment, change form and modification, and can implement in many ways or carry out.For example, the surgical instruments of following discloses and surgical technique and tools configuration are only exemplary, and are not intended to limit their scope or application.In addition, except as otherwise noted, otherwise term used herein and expression are that in order to help reader, exemplary embodiment to be described to object selected, and unrestricted its scope.
Each embodiment is usually directed to ultrasonic surgical instrument, and more particularly, relates in this apparatus for surgical technique and tools being connected to the connecting device of source of ultrasonic energy.The example of ultrasonic surgical instrument is in U.S. Patent No. 5,322, and 055 and 5, in 954,736, have disclosed, in conjunction with the example of ultrasound knife and surgical instruments for example, in () U.S. Patent No. 6,309,400B2,6,278,218B1,6,283,981B1 and 6,325, in 811B1, have disclosedly, described patent full text is separately incorporated herein by reference.Equally with way of reference separately by having of being incorporated in full: be filed in March 22 in 2007 objects jointly all, the U.S. Patent application No.11/726 of common pending trial, 625, its title is ULTRASONIC SURGICAL INSTRUMENTS (ultrasonic surgical instrument), and common all U.S. Patent applications of submitting on the same day with the application, its title is THERMALLY-ACTIVATED COUPLING ARRANGEMENTS AND METHODS FOR ATTACHING TOOLS TO ULTRASONIC SURGICAL INSTRUMENTS (for instrument being attached to hot activation connecting device and the method for ultrasonic surgical instrument) (attorney is No.END6494USNP1/080596).
Fig. 1 shows the ultrasonic system 10 that comprises supersonic signal generator 12, and it has ultrasonic transducer 14, handpiece 16 and surgical technique and tools 100, can adopt described surgical technique and tools according to various embodiments of the present invention.The each side of this system describes in further detail in the open No.US 2008/0234709A1 of United States Patent (USP), by reference the open full text of above-mentioned application is incorporated to.Ultrasonic transducer 14 (being called " Langevin stacks ") can generally include transducing part 18, the first resonator or end shield 20, the second resonator or front shroud 22 and accessory.Ultrasonic transducer 14 is preferably an integer system half-wavelength (n λ/2).Acoustic assembly 24 can comprise ultrasonic transducer 14, installed part 26 and speed converter 28.
The far-end of end shield 20 is connected to the near-end of transducing part 18, and the near-end of front shroud 22 is connected to the far-end of transducing part 18.The length of front shroud 22 and end shield 20 determined by multiple variablees, and these multiple variablees comprise the thickness of transducing part 18, the density of material and the resonant frequency of elastic modelling quantity and ultrasonic transducer 14 for the manufacture of end shield 20 and front shroud 22.
Transducer can be made up of one or more piezoelectric elements or magnetostriction element in apparatus handpiece 16.In surgical technique and tools 100, cause supersonic vibration by for example electric excitation transducer, described transducer is made up of one or more piezoelectric elements or magnetostriction element in apparatus handpiece.The vibration that transducer portion produces transfers to surgical technique and tools via the ultrasound waveguide 28 that extends to surgical technique and tools 100 from transducer portion.
In the illustrated embodiment, transducer is made up of piezoelectric element 40.Piezoelectric element 40 can be made with any suitable material, for example lead zirconate-titanate, lead meta-columbute, lead titanates or other piezoelectric crystal material.Each anodal 42, negative pole 44 and piezoelectric element 40 have the hole at the center of extending through.Anelectrode 42 and negative electrode 44 are electrically connected to respectively wire 46 and 48.Wire 46 and 48 is enclosed in cable 50, is electrically connected with the supersonic signal generator 12 of ultrasonic system 10.
The ultrasonic transducer 14 of acoustic assembly 24 will be converted into mechanical energy from the signal of telecommunication of supersonic signal generator 12, and this mechanical energy mainly causes ultrasonic transducer 14 and surgical technique and tools 100 that the extensional vibration campaign of supersonic frequency occurs.Suitable generator is for deriving from Ethicon Endo-Surgery, the GEN04 type generator of Inc. (Cincinnati, Ohio).In the time that acoustic assembly 24 is switched on, oscillating movement standing wave produces by acoustic assembly 24.Oscillating movement amplitude along any some place of acoustic assembly 24 can depend on the position of moving along acoustic assembly 24 measuring vibrations.The minimum of oscillating movement standing wave or zero crossing are commonly referred to node (i.e. motion conventionally minimum position), and the maximum value of standing wave or peak value are commonly referred to antinode.Antinode and be quarter-wave (λ/4) apart from the distance between its nearest node.
Wire 46 and 48 is transferred to anelectrode 42 and negative electrode 44 by the signal of telecommunication from supersonic signal generator 12.Power to piezoelectric element 40 by the signal of telecommunication of supplying by supersonic signal generator 12 in response to foot switch 60, thereby produce standing acoustic waves in acoustic assembly 24.The signal of telecommunication produces the disturbance of repeated small displacements form in piezoelectric element 40, makes the larger compression stress of appearance in material.The little displacement meeting repeating makes piezoelectric element 40 expand and retract along the axis of voltage gradient in a continuous manner, thereby produces the longitudinal wave of ultrasonic energy.Ultrasonic energy transfers to surgical technique and tools 100 by acoustic assembly 24.
In order to make acoustic assembly 24 that energy is delivered to surgical technique and tools 100, all parts of acoustic assembly 24 must be connected to described surgical technique and tools 100 with acoustically.The parts of acoustic assembly 24 are preferably through acoustics adjustment, make the length of any assembly be the integral multiple of 1/2nd wavelength (n λ/2), wherein wavelength X is that acoustic assembly 24 is at the extensional vibration driving frequency of selecting in advance or work extensional vibration driving frequency f dunder wavelength, and wherein n is any positive integer.Also conceiving acoustic assembly 24 can be in conjunction with any suitably-arranged of acoustic elecment.Along with the continuation of current detailed description of the invention, those of ordinary skill in the art will readily appreciate that said system 10 is only an example that can adopt the various uniquenesses of embodiments of the invention and the countless ultrasonic surgical systems of new advantages.
Fig. 1 and Fig. 2 show the connecting device 110 of the embodiment of the present invention for surgical technique and tools 100 being connected to waveguide 28.Surgical technique and tools 100 is shown as blade and has overall level and smooth outer surface, and it is well suited for condensing and tissue anaplasty application.But, as used herein, any surgical end-effector or instrument or the blade that can operatively be connected with ultrasonic surgery handpiece or other source of ultrasonic energy in surgical device can be contained in term " surgical technique and tools ", and it includes, but is not limited to straight and bending blade, sharp hook, dissecting hook, spherical coagulator, clamp coagulator etc.Exemplary blade configuration is described in the U.S. Patent No. 6,423,082 of authorizing the people such as Houser, by reference the open full text of above-mentioned application is incorporated to.The example of clamp coagulator device is in U.S. Patent No. 6,254, open in 623, by reference the open full text of above-mentioned application is incorporated to.
In the embodiment describing in Fig. 1 and Fig. 2, the far-end 29 of waveguide 28 can be connected to coupling part 101, and in multiple embodiment, described coupling part comprises the cavity 114 of the shape complementarity in the proximal part 112 that is arranged on surgical technique and tools 100.For example, described far-end 29 can have conical butt and large I is accommodated in cavity 14.At least distal portions 29 of waveguide 28 or waveguide 28 is made up of first material 15 with the first thermal coefficient of expansion (CTE1).The proximal part 112 of surgical technique and tools 100 or at least surgical technique and tools 100 is made up of second material 103 with the second thermal coefficient of expansion (CTE2) that is less than the first thermal coefficient of expansion.Therefore:
CET2<CET1
The distal portions 29 of waveguide 28 is determined size and shape with respect to the cavity 114 in the proximal part 112 of surgical technique and tools 100, make when waveguide 28 and surgical technique and tools 100 are during in about equal temperature, between the distal portions 29 of waveguide 28 and cavity 114, generate and be slidably matched or gap value " C ".
In each embodiment, at least distal portions 29 of waveguide 28 or waveguide 28 can be 13.7 × 10 by for example thermal coefficient of expansion -6the aluminum of in/in/ degrees Fahrenheit is made, and the proximal part 112 of surgical technique and tools 100 can be 4.34 × 10 by for example thermal coefficient of expansion -6the titanium of in/in/ degrees Fahrenheit is made.In such an embodiment, gap " C " can be approximately 0.0005 inch.
For this surgical technique and tools 100 is connected to waveguide 28, clinician is arranged in the distal portions of waveguide 28 29 in the cavity 114 of surgical technique and tools 100, as shown in Figure 2.Heat energy (, heat) is applied on the distal portions 29 of waveguide 28 subsequently, to increase outer dia or the parameter shape of distal portions 29 by thermal expansion.Because CTE1 > is CTE2, so when compared with the inside diameter of cavity 114 or shape, the outer dia of the distal portions 29 of waveguide 14 or parameter shape will expand into larger magnitude, to set up interference fit as shown in Figure 2 A between them.Can with radio frequency (RF) induction coil 120 of distal portions 29 vicinities, heat or heat energy be applied to waveguide 28 around by being arranged on waveguide 28.In other embodiments, can adopt resistance-type thermoelectricity heating element heater 130.See Fig. 2 B.Before setting up sufficient interference fit between the proximal part 112 at surgical technique and tools 100 and the distal portions 29 of waveguide 28, apply heat.Then, hot applicator 120,130 must continue to be activated to keep interference fit in whole use procedure.After completing surgical operation, hot applicator 120,130 can be deactivated.Once the temperature of the proximal part 29 of waveguide 28 returns to the approximate temperature of the proximal part 114 of surgical technique and tools 100, surgical technique and tools can be pulled down from waveguide 28.
In the embodiments of figure 3, waveguide 28 ' distal portions 29 ' a part 140 made by the material with high thermal expansion coefficient.For example, part 140 can be made up of for example aluminum, and waveguide 28 ' remainder can be formed from steel.Under normal room temperature (, under heated condition not), part 140 can with waveguide 28 ' distal portions 29 ' have identical diameter or other parameter shape, with make part 29 ', 140 can be inserted into surgical technique and tools 100 ' proximal part 112 ' in cavity 114 ' in.Therefore, before heat or heat energy being applied to by hot applicator 120 or 130 (no matter which may be) to distal portions 29 ' upper, part 140 and cavity 114 ' wall between predetermined gap amount " C " is set.For by surgical technique and tools 100 ' be connected to waveguide 28 ' upper, hot applicator 120 or 130 be activated to make part 140 be greater than surgical technique and tools 100 ' distal portions 112 ' the speed of expansion rate expand, to produce interference fit between them.See Fig. 3 A.
During Fig. 3 B shows alternative embodiment, wherein in waveguide 28 " far-end 29 ", cavity 114 is set ", and the size of surgical technique and tools 100 " proximal part 112 " be customized to be accommodated in cavity 114 ".In this embodiment, waveguide 28 " far-end 29 " is by first material 15 with the first thermal coefficient of expansion (CTE1) " make, and surgical technique and tools 100 " proximal part 112 " " is made up of second material 103 with the second thermal coefficient of expansion (CTE2) that is greater than the first thermal coefficient of expansion.Therefore:
CET2>CET1
For this surgical technique and tools 100 " is connected to waveguide 28 ", clinician is arranged in surgical technique and tools 100 " proximal part 112 " in waveguide 28 " distal portions 29 ", as shown in Figure 3 B.It is upper that heat energy (, heat) is applied to surgical technique and tools 100 " proximal part 112 " subsequently, to increase proximal part 112 by thermal expansion " outer dia or parameter shape.Because CTE1 < CTE2, thus when with cavity 114 " outer dia or shape compared with time, outer dia or the parameter shape of surgical technique and tools 100 " proximal part 112 " will expand into larger magnitude, to set up interference fit between them.Heat or heat energy can be applied to surgical technique and tools 100 " proximal part 112 " by hot applicator 120, and hot applicator can comprise radio frequency (RF) induction coil or be arranged on proximal part 112 " on resistance heater 120 ".Power can be supplied by suitable connection from handpiece.For example, on heating element heater 120 " can be arranged on surgical technique and tools 100 ", and when surgical technique and tools 100 " proximal part 112 " inserts cavity 114 " in time, hot applicator 120 " can be connected to from the outstanding wire (not shown) of handpiece power is fed to hot applicator 120 ".Before setting up sufficient interference fit between surgical technique and tools 100 " proximal part 112 " and waveguide 28 " distal portions 29 ", applying heat.Then, hot applicator 120 can be deactivated and/or remove, and can use described system.Once the temperature of surgical technique and tools 100 " proximal part 112 " returns to the approximate temperature of waveguide 28 " distal portions 29 ", surgical technique and tools 100 " can from waveguide 28 " is pulled down.
Fig. 4-6 show and reusable surgical technique and tools 300 can be removed in the waveguide 228 that is connected to handpiece 216 with another connecting device of various embodiments of the present invention, seemingly, difference is being listed below for the structure of described handpiece and aforementioned handpiece 16 and class of operation.In certain embodiments, for example, the far-end 229 of waveguide 228 can be taper or is conical butt, to be contained in the cavity 314 of the shape complementarity arranging in the proximal part 312 of surgical technique and tools 300.In this embodiment, surgical technique and tools 300 comprises distal portions 312 is supported on to housing or cover part 320 wherein.In each embodiment, distal portions 312 can be supported on and be conducive in the installed part 26 of distal portions 312 with respect to the acoustically-driven of outer housing 320.As found out in Fig. 5 and Fig. 6, outer housing 320 has cavity 330 therein, for the distal portions of handpiece 216 218 is contained in wherein.Outer housing 320 also has axial passage 332, to make waveguide 228 can extend through to engage with the proximal part 312 of surgical technique and tools 300.As can be further found out in Fig. 4-6, the distal portions 218 of handpiece 216 has tapering part formed thereon 220.In the time that distal portions 218 is accommodated in the cavity 330 of outer housing 320, tapering part 220 is conflicted with at least one latch member 350 can selectivity expanding being arranged in outer housing 320.Latch member 350 can be made up of for example marmem (SMA), and is connected to the corresponding instrument contact 352 being arranged in outer housing 320.For example, latch member 350 can be made, and is connected to contact 352 by bow strip 354 by NiTi (Ni-Ti), CuZnAl, CuAlNi etc. according to annular or hoop shape.Also can in Fig. 4-6, find out, trigger contact 230 and be arranged in the distal portions 218 of handpiece 216.In each embodiment, trigger contact 230 and can comprise the annular ring or the ring section that for example, are formed by conductive material (, beryllium copper), and described conductive material and electric power source 240 electric connections (for example, wiring).Electric power source 240 can comprise for example battery or alternating current power supply, and can be integrally formed with aforementioned generating apparatus.
Fig. 5 and Fig. 6 show the method that surgical technique and tools 300 is connected to the waveguide 228 of handpiece 216.In order to cause connection operation, the distal portions 218 of handpiece is inserted in the cavity 330 in the housing 320 of surgical technique and tools 300, as shown in Figure 5, make to trigger contact 230 and electrically contact with instrument contact 352, thereby allow electric current (actuated signal) to activate latch member 350.In each embodiment, switch 244 can be arranged on and be connected in the electric wire/wire 242 of electric power source 240 activating contact 230.For example, described switch 244 can be arranged in handpiece or generator.Therefore, when surgical technique and tools 300 is connected to waveguide 228 as shown in Figure 5, and switch 244 is while being triggered, and breech lock 350 will be activated and start to head on tapering part 220 and expand.It should be understood by one skilled in the art that, breech lock 350 with cause being connected of tapering part 220 instrument 300 be drawn to waveguide 228 retentivities the state that engages, connect with the abundant acoustics of realizing between the distal portions 229 of waveguide 228 and the proximal part 312 of surgical technique and tools 300.See Fig. 6.
Fig. 7-12 show another connecting device for reusable surgical technique and tools 500 being removed to the various embodiments of the present invention in the waveguide 428 that is connected to handpiece 416, seemingly, difference is being listed below for the structure of described handpiece and aforementioned handpiece 216 and class of operation.In this embodiment, at least one outside the far-end 418 that is projected into handpiece is shown in Fig. 7 and Fig. 8, and preferably, four contact contact pin 450.One or more described contact contact pin 450 is wired to source of electrical energy 240.As for other embodiment, can provide switch 244 to control and flow to the electric current that contacts contact pin 450 from source 240.Instrument 500 has instrument outer housing 520, and it has the corresponding contact pin slit 570 that is suitable for therein holding one of corresponding contact contact pin 450, arrives the position shown in Figure 11 so that outer housing 520 is slided on handpiece 416.Then, clinician rotates outer housing 520 with respect to handpiece 416, is accommodated in separately the corresponding locking socket 572 of the end that is arranged in each slit 570 to make contacting contact pin 450.Electric contact piece 574 can be disposed in each locking socket 572 or be adjacent, and be arranged in locking socket 572 during so that proper, electric contact piece electrically contacts with corresponding contact contact pin 450.Described electric contact piece 574 and corresponding one or more latch member section 550 electric connections that can expand that are supported in outer housing 520.Latch member section 550 is arranged such that to be arranged on handpiece and when contact contact pin 450 is contained in the locking socket 572 of their correspondences, latch member section 550 is arranged as with the tapering part 420 of handpiece 416 and engages when instrument 500.
In order to cause connection operation, the distal portions 418 of handpiece is inserted in the cavity 530 of outer housing 520 of surgical technique and tools 500, as shown in figure 11, thereby contact contact pin 450 is accommodated in the slit 570 of their correspondences, clinician rotates handpiece 416 with in the locking socket 572 that makes to contact contact pin 450 and be arranged on their correspondences with respect to surgical technique and tools 500, and contacts with corresponding electric contact piece 574 wherein.If switch 244 cuts out, electric current is allowed to subsequently flow through electric contact piece 574 and arrives the latch member section 550 that can expand.Along with current flowing is to the latch member section 550 that can expand, latch member section 550 expand and by the near-end of instrument 500 512 pull for far-end 429 retentivities of waveguide 428 engage.
Figure 13 and Figure 14 show another connecting device 110 of each embodiment of the present invention for surgical technique and tools 100 being for good and all connected to the waveguide 28 of handpiece 16 '.In this embodiment, the size of the far-end 29 of waveguide 28 is customized in the cavity 114 in the proximal part 114 that is accommodated in surgical technique and tools 100.Be arranged in cavity 114 is the alloy material 115 that some can melting.In multiple embodiment, alloy material that can melting can comprise for example copper-aluminum.In this embodiment, clinician is inserted in cavity 114 that by the far-end of waveguide 28 29 it is contacted with alloy material 115 that can melting.Then clinician can operate generator 12 and thinks that waveguide 28 provides the sufficient excursion of abundance aspect magnitude and persistence, is welded to instrument 100 with the alloy material 115 that makes it possible to melting by waveguide 28.As shown in figure 14, once complete welding, normal operating magnitude is arrived in power reduction by clinician.For example, normal power magnitude can be 5 watts.In order to make meltable material 115 fully waveguide 28 is welded to instrument 100, clinician can, by the increase of output power to for example 50 watts, continue about 5 seconds (time).The magnitude of this increase and persistence can be depending on type and the transducer apparatus of the meltable material 115 of employing.But in each case, the magnitude of the increase of output power and persistence should be less than and will finally cause magnitude and the persistence of other parts damages of transducer or system.
Figure 15-20 show for reusable surgical technique and tools 700 being removed to another connecting device 710 in the waveguide 628 that is connected to handpiece 616, and seemingly, difference is being listed below for the structure of described handpiece and aforementioned handpiece 16 and class of operation.For example, the far-end 629 of waveguide 628 can have conical butt cavity 630 therein, to hold the proximal part 712 of shape complementarity of surgical technique and tools 700.In this embodiment, surgical technique and tools 700 comprises proximal part 712 is supported on to outer housing 720 wherein.In each embodiment, outer housing 720 can be made up of for example titanium 64, and proximal part 712 can be supported on be conducive to proximal part 712 with respect to outer housing 720 with acoustically produce motion installed part 26 in.As found out in Figure 15 and Figure 16, outer housing 720 has annular housing 730 therein, for the distal portions of handpiece 616 618 is contained in wherein.Outer housing 720 also has axial passage 732, to make waveguide 628 can extend through to engage with the proximal part 712 of surgical technique and tools 700.
As shown in Figure 15 and Figure 16, the far-end 618 of handpiece 616 can support movably and discharge ring 640, and described release ring has bar portion 642,644 relative on the diameter of the respective slots 646,648 in the distal portions 618 that extends through respectively handpiece 616.The purposes that discharges ring 640 will be explained below in more detail.Can in Figure 15 and Figure 16, find out, the distal portions 629 of waveguide 628 is also furnished with can be contained in locking ring 652 annular groove 650 wherein.Locking ring 652 can be made up of marmem (SMA), such as NiTi of described SMA (Ni-Ti), CuZnAl, CuAlNi etc.Locking ring 652 also can be supported at least two, preferably four heat generate and cooling unit 660 in, described heat generation is sold 661 with cooling unit by correspondence and is pivotally sold and be connected, or is otherwise pivotally connected to the wall 619 of the far-end of handpiece 616.
Figure 15-18 show a kind of form of the heat generation/cooling unit 660 of one embodiment of the present of invention.In each embodiment, each heat generation/cooling unit 660 has the main part 663 of making by for example aluminum or such as the engineering plastics of Merlon, and described main part can have therein by wall 668 and separates 664He Xiashi district of Shang Shi district 666, and described wall has the mobile backward channel 670 therefrom passing.Periphery has stop boss formed thereon 672, be formed on the locking projection 740 in the outer housing 720 of surgical technique and tools 700 retentivity engage (Figure 19 and Figure 20), will further discuss as following.Return to opening bar 676 and extend through slidably the passage 675 in the main part 663 limiting by sponge member 680 and wall 668.Sponge member 680 can be supported on another wall part 682, as shown in the figure.Return to opening bar 676 and have the hole 678 of running through, hole and mobile backward channel 670 co-axially aligns, to make liquid/vapor through 666He Shang chamber, lower chamber 664.Corrugated tube or wiping arrangement 684 can be set in upper chamber 664 to be slidably engaged with returning to opening bar 676, make corrugated tube 684 for seal channel 675 in the time returning to opening bar 676 and do not advance to upper chamber 664 vertically.Heating/cooling medium 686 is arranged in lower chamber 666.In each embodiment, heating/cooling medium 686 can comprise the liquid for example with relatively low boiling point, such as acetone.
Use description to now surgical technique and tools 700 to be connected to the method for handpiece 616.Figure 15 shows in the outer housing 720 that the far-end of handpiece 618 is inserted into surgical technique and tools 700 strong, the position of the each parts in handpiece 616 and surgical technique and tools 700.In order to start to connect operation, clinician is inserted into the far-end of handpiece 616 618 in the outer housing 720 of surgical technique and tools 700.Referring to Figure 16.Now, handpiece 616 and surgical technique and tools 720 are substantially under room temperature.Along with the far-end of handpiece 618 enters in the annular housing 730 in outer housing 720, the power trigger switch 690 being arranged in the distal portions 618 of handpiece 616 allows current flowing to generator, so that transducer is activated.In each embodiment, when waveguide 628 with support locking ring 652 thereon when room temperature (moderate temperature), locking ring 652 is retracted around the far-end of waveguide 628, makes cavity 630 wherein not exclusively to receive the near-end 712 of frusto-conical of surgical technique and tools 700.But the triggering of transducer causes waveguide 628 to heat locking ring 652, make its near-end 712 that expand into surgical technique and tools can suitablely be arranged on the state in cavity 630.Along with connecting the beginning of operation, locking projection 740 (Figure 19) is pivoted to each heat generation/cooling unit 660 and vibrate waveguide 628 close contacts around the pin of their correspondences, to be conducive to producing heat around locking ring.This pivotable behavior is represented by the arrow in Figure 16 " A ".In the time that near-end 712 is arranged in cavity 630 completely, in the stop boss 672 of locking projection 740 on heat generation/cooling unit 660, fasten, as shown in Figure 17 and Figure 20.It should be understood by one skilled in the art that along with locking projection 740 fastens in stop boss 672, can be the click sound that clinician provides tactile feedback and/or can hear, to indicate surgical technique and tools 700 correctly to advance to link position.Locking projection 740 makes heat generations/cooling unit pivotable return to centre or pivot position not, and wherein locking projection 740 and stop boss will remain on link position by surgical technique and tools 700.When in link position as shown in Figure 17 and Figure 20, the far-end 721 of outer housing 720 triggers the power deexcitation switch 689 that makes current stops arrive transducer.Connecting operation completes now.Clinician freely uses described system now.Also will understand, other operation of transducer will cause locking ring 652 to expand again; But locking projection 740 and stop boss 672 are for keeping the connection engagement state between surgical technique and tools 700 and handpiece 616.
Forward Figure 18-20 to, it is desirable to locking ring 652 is hot in initial connection operation, is inserted in cavity 630 with the near-end 712 that makes instrument 700.In heating process, liquid 686 is stayed in sponge 680 and upper chamber 664.Can in Figure 20, find out, when in latched position, the heat dissipating ring 692 in the contiguous wall that is arranged on outer housing 720 of heat generation/cooling unit 660.This layout contributes to dispel the heat from heat generation/cooling unit 660.When locking projection 740 is positioned at stop dog position (Figure 17 and Figure 20), and transducer is while being deactivated, it is desirable to locking ring 652 cooling further the far-end of waveguide 629 is fixed to the near-end 712 of instrument 700.Locking projection 740 advances to the process of latched position and setovers to make the hole 678 in bar 676 to align with backward channel 670 by returning to opening bar 676, so that the liquid 686 in upper chamber 664 is flow in lower chamber 666.Along with liquid 686 flow to outside upper chamber 684,666 surfaces, lower chamber of its contact heat and evaporation are with cooling those surfaces, and final cooling locking ring 652.
For surgical technique and tools is departed from from handpiece 616, clinician moves and discharges ring 640 to activate described activator switch 689 or contact, and this causes transducer to start vibration processes and starts Heating Cyclic.Along with heat generation/cooling unit 660 starts to heat up, locking ring 652 starts to expand, to make clinician can pull surgical technique and tools to depart from handpiece 616.In the time that parts separate, after power actuation switch is no longer activated by the far-end 721 of instrument outer housing 720, power activator switch disconnects the power that is transported to transducer.The contact etc. that it will be understood by those skilled in the art that multiple known switches and switching device, microprocessor control is used in instrument and is connected in processing and activates and deexcitation transducer, and does not depart from the spirit and scope of the present invention.For example, power activator switch can comprise and is connected to the nearly sense switch or the contact that are contained in generator or are installed to the microprocessor of contiguous generator.
Figure 21-23 illustrate the embodiment of another surgical tool system 800 of the present invention, and it comprises generator 12 and handpiece 816, and described handpiece is substantially similar with above-mentioned handpiece 16 aspect design and structure, and difference is being pointed out below.For example, the far-end 829 of waveguide 826 can optionally radially expand, to make far-end 829 can be effectively connected to the near-end 912 of surgical technique and tools 900.In Figure 22 and Figure 23, be clear that, the far-end 829 of waveguide 826 has two relative lugs 830, their shape be configured as with cavity 930 retentivities in the near-end 912 of surgical technique and tools 900 engage.Cavity 930 can be provided with tapered wall 932, make to insert in cavity 930 and when radial motion subsequently (arrow " R ") when lug 830, lug 830 for instrument 900 is pulled for far-end 829 retentivities of waveguide 826 engage.In each embodiment, waveguide 826 can be made up of for example aluminum 7075-T6.
Each embodiment can comprise the actuator rod 850 that can move vertically, and it can be supported in the slit 840 in waveguide 826 movably.Actuator rod 850 can be made and be had between lug 830 a big or small far-end 852 extending by for example ultem, PEI, and when lug 830 radially being moved during along distal advancement between lug 830.As found out in Figure 21, actuator rod 850 can have the part 854 of radially extending, and it extends through the slit 842 and 817 in waveguide 826 and handpiece 816 respectively.The part 854 of radially extending can stop in button part 856, and it is conducive to clinician's actuator lever 850.
Therefore, for surgical technique and tools 900 is connected to handpiece 816, clinician is inserted into lug 830 in cavity 930, and actuator rod 850 is in unactuated position (Figure 22) simultaneously.Once lug 830 is inserted in cavity 930, clinician can slide button part 856 along distal direction " DD ", to make far-end 852 motion between lug 830 vertically of actuator rod 850, to realize radial motion and to engage (Figure 23) with the tapered wall of cavity 930.
Various apparatus disclosed herein can be designed to after single uses abandon, or they can be designed to can use repeatedly.But in any situation, this apparatus all can recover again, thereby reuse after using at least one times.Finishing can comprise provision for disengagement, cleaning or change concrete parts and the follow-up any combination that re-assemblies step.Specifically, detachably this device, and can according to any combination selection change or pull down any amount of specific component or the parts of device.Clean and/or change after specific features, by medical surgery team personnel, apparatus is ressembled before can or being close to surgical operation in repair shop, for follow-up use.The finishing that those skilled in the art will know that device can utilize dismounting, clean/to change and the multiple technologies of assembling again.The reparation apparatus of the use of these technology and gained all within the scope of the invention.
Preferably, before surgical operation, implement various embodiments as herein described.First, obtain newly or with the apparatus of crossing, and clean as required.Then can carry out disinfection to apparatus.In a kind of disinfection technology, apparatus is placed in to container closed and sealing, for example plastic bag.Then container and apparatus are placed in to the radiation field of penetrable this container, for example gamma-radiation, X ray or high energy electron.Radiation by kill on apparatus and container in antibacterial.Then the apparatus after sterilization can be kept in sterile chamber.Apparatus is remained on aseptic condition by sealing container, until open this container in armarium.
Apparatus is preferably through sterilization.This can be undertaken by the mode of any amount well known by persons skilled in the art, comprises β radiation, gamma-radiation, oxirane or steam.
Although described various embodiments herein, can implement multiple amendments and modification to these embodiment.For example, can adopt dissimilar end effector.In addition, everyly disclose for the material of some parts, all can use other materials.Above-mentioned detailed description of the invention and following claim are intended to contain all such amendments and modification.
With way of reference in full or be partly incorporated to that any patent is herein announced or other open materials only with in existing definition of the present invention, statement or the afoul degree of other open materials are not incorporated to herein at the material being incorporated to.Similarly and under necessary degree, the disclosure of clearly setting forth has herein replaced any conflict material being incorporated herein by reference.If any material or its part are incorporated herein by reference, but conflict mutually with existing definition as herein described, statement or other open materials, so only between be incorporated to material and existing open material, do not produce under the degree of conflicting and be just incorporated to herein.

Claims (16)

1. a ultrasonic surgical instrument, described ultrasonic surgical instrument has the handpiece that can operatively support therein at least one ultrasonic transducer, and described ultrasonic surgical instrument comprises:
Surgical technique and tools, described surgical technique and tools has near-end, and cavity is arranged in described near-end; And
Waveguide, described waveguide is given prominence to from described handpiece towards distally and is interacted with described at least one ultrasonic transducer, described waveguide has distal portions, the size of described distal portions is decided to be in the described cavity in the described near-end that is inserted into described surgical technique and tools, and described distal portions optionally expands, with described cavity retentivity engage.
2. ultrasonic surgical instrument according to claim 1, the described distal portions of wherein said waveguide can optionally radially expand.
3. ultrasonic surgical instrument according to claim 1, also comprises the actuator means that can operatively be supported by described waveguide.
4. ultrasonic surgical instrument according to claim 3, wherein said actuator means comprises the actuator rod that can move vertically.
5. ultrasonic surgical instrument according to claim 4, wherein said distal portions has at least two lugs that are formed on described distal portions.
6. ultrasonic surgical instrument according to claim 5, wherein said cavity has the tapered wall part for engaging with described lug.
7. ultrasonic surgical instrument according to claim 4, the wherein said actuator rod that can move comprises:
Bar part, described bar part can be moved and is supported in the slit in described waveguide; And
The actuation part radially extending, the described actuation part radially extending is outstanding through a part for described handpiece.
8. ultrasonic surgical instrument according to claim 1, wherein said surgical technique and tools is selected from following surgical technique and tools group: straight and bending blade, sharp hook, dissecting hook, spherical coagulator and clamp coagulator.
9. a ultrasonic surgical instrument, described ultrasonic surgical instrument comprises:
Handpiece, described handpiece has housing;
At least one ultrasonic transducer, described at least one ultrasonic transducer can operatively be supported in described housing, and can be operatively coupled to supersonic signal generator;
Waveguide, described waveguide is outstanding and interact with described at least one ultrasonic transducer towards distally from described housing, and described waveguide has the distal portions can selectivity expanding;
Actuator rod, described actuator rod can move and be supported in described waveguide, and can between primary importance and the second position, move, and in described primary importance, described distal portions expands, and in the described second position, described distal portions does not expand; And
Surgical technique and tools, described surgical technique and tools has proximal part, and described proximal part has the cavity in described proximal part, so that the described distal portions of described waveguide is contained in described cavity.
10. ultrasonic surgical instrument according to claim 9, wherein said distal portions has at least two lugs that are formed on described distal portions.
11. ultrasonic surgical instruments according to claim 10, wherein said cavity has the tapered wall part for engaging with described lug.
12. 1 kinds for removing the method in the waveguide that is connected to ultrasonic surgical instrument by surgical technique and tools, and described method comprises:
In the proximal part of described surgical technique and tools, cavity is set;
The far-end of described waveguide is inserted in described cavity; And
By the described far-end of described waveguide expand with retentivity engage at least a portion of the wall of described cavity.
13. methods according to claim 12, wherein said expansion be included in described waveguide described far-end can between radial motion part, advance vertically actuation member.
14. methods according to claim 12, also comprise:
End the operation of described ultrasonic surgical instrument;
The retract described far-end of described waveguide; And
From described cavity, draw back described waveguide.
15. methods according to claim 13, also comprise:
End the operation of described ultrasonic surgical instrument;
Draw back vertically described actuation member to allow described can radial motion part inwardly retraction; And
From described cavity, draw back described waveguide.
16. 1 kinds of ultrasonic surgical instruments, described ultrasonic surgical instrument has the handpiece that can operatively support therein at least one ultrasonic transducer, and described ultrasonic surgical instrument comprises:
Waveguide, described waveguide is outstanding towards distally from described handpiece, and can operatively interact with described at least one ultrasonic transducer, and described waveguide is made up of at least the first material, makes at least distal portions of described waveguide have the first thermal coefficient of expansion; And
Surgical technique and tools, described surgical technique and tools has proximal part, described surgical technique and tools is made up of at least the second material, make at least described proximal part of described surgical technique and tools there is the second thermal coefficient of expansion that is less than described the first thermal coefficient of expansion, the described proximal part of described surgical technique and tools has the cavity in described proximal part, so that the described distal portions of described waveguide is contained in described cavity, described cavity is with respect to the described distal portions customization size and dimension of described waveguide, so that proper described distal portions is applied to heat energy in the situation of described distal portions while being accommodated in described cavity, described distal portions expands so that described distal portions is remained in described cavity.
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US12/469,293 US9700339B2 (en) 2009-05-20 2009-05-20 Coupling arrangements and methods for attaching tools to ultrasonic surgical instruments
US12/469,308 2009-05-20
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