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WO1999033665A1 - Sonde ultrasonique de liposuccion - Google Patents

Sonde ultrasonique de liposuccion Download PDF

Info

Publication number
WO1999033665A1
WO1999033665A1 PCT/US1998/026099 US9826099W WO9933665A1 WO 1999033665 A1 WO1999033665 A1 WO 1999033665A1 US 9826099 W US9826099 W US 9826099W WO 9933665 A1 WO9933665 A1 WO 9933665A1
Authority
WO
WIPO (PCT)
Prior art keywords
probe
wall
ultrasonic
thickness
lumen
Prior art date
Application number
PCT/US1998/026099
Other languages
English (en)
Other versions
WO1999033665A8 (fr
Inventor
Vaclav O. Podany
Stephen Dimatteo
Scott C. Kellog
Original Assignee
Mentor Corporation
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Mentor Corporation filed Critical Mentor Corporation
Publication of WO1999033665A1 publication Critical patent/WO1999033665A1/fr
Publication of WO1999033665A8 publication Critical patent/WO1999033665A8/fr

Links

Classifications

    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00—Surgical instruments, devices or methods
    • A61B17/22—Implements for squeezing-off ulcers or the like on inner organs of the body; Implements for scraping-out cavities of body organs, e.g. bones; for invasive removal or destruction of calculus using mechanical vibrations; for removing obstructions in blood vessels, not otherwise provided for
    • A61B17/22004—Implements for squeezing-off ulcers or the like on inner organs of the body; Implements for scraping-out cavities of body organs, e.g. bones; for invasive removal or destruction of calculus using mechanical vibrations; for removing obstructions in blood vessels, not otherwise provided for using mechanical vibrations, e.g. ultrasonic shock waves
    • A61B17/22012—Implements for squeezing-off ulcers or the like on inner organs of the body; Implements for scraping-out cavities of body organs, e.g. bones; for invasive removal or destruction of calculus using mechanical vibrations; 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
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M1/00—Suction or pumping devices for medical purposes; Devices for carrying-off, for treatment of, or for carrying-over, body-liquids; Drainage systems
    • A61M1/84—Drainage tubes; Aspiration tips
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M1/00—Suction or pumping devices for medical purposes; Devices for carrying-off, for treatment of, or for carrying-over, body-liquids; Drainage systems
    • A61M1/89—Suction aspects of liposuction
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00—Surgical instruments, devices or methods
    • A61B17/32—Surgical cutting instruments
    • A61B17/320068—Surgical cutting instruments using mechanical vibrations, e.g. ultrasonic
    • A61B2017/320072—Working tips with special features, e.g. extending parts
    • A61B2017/32008—Working tips with special features, e.g. extending parts preventing clogging of suction channel
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M2202/00—Special media to be introduced, removed or treated
    • A61M2202/08—Lipoids

Definitions

  • This invention relates to a probe for generating ultrasonic vibrations to treat tissue, for example, liposuction of adipose tissue.
  • Ultrasonic assisted liposuction is typically conducted using an ultrasonically vibrating probe extending through a portal to a surgical site.
  • the surgeon carefully manipulates the ultrasonically vibrating probe to treat tissue to be removed while avoiding other bodily tissue such as muscles, body organs and blood vessels. It is known to step down or taper distally the outer diameter of an ultrasonic probe to provide for amplification of the ultrasonic vibrations.
  • a probe for ultrasonic tissue treatment includes a body having a wall defining a lumen. A thickness of the wall decreases in a distal direction such that the lumen increases in cross-section in the distal direction.
  • Embodiments of this aspect of the invention may include one or more of the following features.
  • the wall tapers to a smaller thickness in the distal direction.
  • the wall steps down to a smaller thickness in the distal direction.
  • the wall steps down in the vicinity of a node, in the vicinity of a plurality of nodes, and distally of a distal most node.
  • the probe is cylindrical and an outer diameter of the probe remains constant while the thickness of the wall decreases.
  • a length of the body over which the wall thickness decreases is a minority portion of an overall length of the body.
  • a majority portion of the overall length of the body has a constant wall thickness.
  • the probe is configured to perform liposuction.
  • An opening in fluid communication with the lumen is defined at a distal tip of the probe.
  • a cap is mounted on the distal tip for covering the opening at the distal tip.
  • An opening extends through the probe wall. The opening extends radially from a longitudinal extent of the lumen.
  • a plurality of openings extends through the probe wall. The plurality of openings are equally spaced about the body.
  • the body is cylindrical and the plurality of openings are equally spaced about a circumference of the body.
  • a method of amplifying ultrasonic vibrations includes applying ultrasonic vibrations to a proximal end of an ultrasonic probe, and amplifying the ultrasonic vibrations by decreasing a thickness of a wall of the ultrasonic probe in a distal direction such that a lumen defined by the wall increases in cross-section in the distal direction.
  • the ultrasonic probe of the present invention provides amplification without requiring a change in the profile of the outer diameter of the probe.
  • the smooth outer profile helps minimize the chances of soft tissue being torn by exposed edges on the outer surface of the probe.
  • FIG. 1 is an illustration of an ultrasonic probe according to the invention.
  • FIG. 2 is a cross ⁇ sectional side view of a distal region of the probe of FIG. 1.
  • FIG. 3A is a partially cut-away side view of an additional embodiment of an ultrasonic probe
  • FIG. 3B is an exploded view of region 3B of the probe of FIG. 3A
  • FIG. 3C is an exploded view of region 3C of the probe of FIG. 3A
  • FIG. 3D is an exploded view of region 3D of the probe of FIG. 3A.
  • an ultrasonic probe 10 for removing adipose tissue from a human or other animal body includes a distal region 12, a mid region 16, and a proximal end 14.
  • Proximal end 14 is configured to releasably engage with a handpiece 50 of an ultrasonic liposuction system 52 for generating ultrasonic vibrational energy.
  • An ultrasonic liposuction system is described, for example, in Podany et al., titled ULTRASONIC ASSISTED LIPOSUCTION SYSTEM, filed November 7, 1997, incorporated by reference herein.
  • Pressure waves produced by ultrasonic vibrations received by proximal end 14 are transmitted from distal region 12 to a surgical site.
  • a step down 40 between proximal end 14 and mid region 16 acts to amplify the ultrasonic vibrations received by proximal end 14.
  • Distal region 12 of probe 10 further acts to amplify the amplitude of the ultrasonic vibrations.
  • a probe wall 8 has a tapered wall portion 20 extending proximally from distal region 12 to a transition plane 24. Tapered wall portion 20 is formed by decreasing the thickness of wall 8 in the distal direction while maintaining the outer diameter of wall 8.
  • a lumen 18 defined by probe wall 8 thus increases in cross-section as it extends distally from transition plane 24 toward a distal end 7 of probe 10. Lumen 18 extends from distal region 12 to proximal end 14.
  • Tapered wall portion 20 serves as a Gaussian-type resonator to amplify the ultrasonic vibrations in ultrasonic probe 10.
  • Gaussian-type resonators are described generally in uchinich et al . , U.S. Patent 4,922,902, titled METHOD FOR REMOVING CELLULAR MATERIAL WITH ENDOSCOPIC ULTRASONIC ASPIRATOR, incorporated by reference herein.
  • Wuchinich 4,992,902 patent by varying the cross- sectional area of an ultrasonic probe according to a
  • the velocity of the ultrasonic vibrations can be rapidly increased while maintaining a safe operating stress in the probe material .
  • a constant diameter inner surface 42 of wall 8 defines a constant wall thickness region 26 of wall 8 extending proximally from transition plane 24 to proximal end 14.
  • Distal region 12 and mid region 16 have a constant outer diameter, for example about 0.2 inch, producing a smooth, continuous outer profile.
  • a cap 28 abuts distal region 12 of ultrasonic probe 10 to close off distal end 7 of lumen 18.
  • Cap 28 is secured to head portion 12 by, for example, welding, brazing, gluing, or press fitting, or with a machine thread.
  • a pair of openings 32 extend through wall 8 in distal region 12 and are circumferentially spaced apart by 180°. Openings 32 are in fluid communication with lumen 18. Openings 32 and lumen 18 provide a channel through which suction is applied to remove treated tissue from the surgical site by, for example, an aspirator connected to a proximal opening 30 of lumen 18.
  • Probe 10 is preferably made from titanium. Probe 10 can also be made from other materials, for example aluminum or stainless steel.
  • the length of tapered wall portion 20 from transition plane 24 to distal end 7 is about 1.5 inches, with the remainder of probe 10 having a length of about 12 inches.
  • the thickness of wall 8 is about 0.05 inch at transition plane 24 and about 0.025 inch at distal end 7.
  • the inner diameter of tapered wall portion 20 increases from about 0.100 inch at transition plane 24 to about 0.15 inch at distal end 7.
  • the dimensions and shape of probe 10 can be varied according to the application requirements and needs.
  • ultrasonic vibrations generated in handpiece 50 are delivered to proximal end 14 of probe 10.
  • the velocity of the ultrasonic vibrations is amplified at step down 40.
  • the amplified vibrations are transmitted through mid region 16 to distal region 12 where the velocity of the ultrasonic vibrations is again amplified.
  • Tissue in the vicinity of distal end 7 is treated by the ultrasonic vibrations and treated tissue is aspirated through openings 32 and lumen 18.
  • Amplification of the ultrasonic vibration is provided at distal region 12 without requiring a change in the outer profile of the probe. Since the outer surface of distal region 12 is smooth, the possibility of snagging and/or cutting soft tissue is minimized during the ultrasonic liposuction procedure.
  • a lumen 118 of probe 110 is defined by a wall 108 having step-down sections 120, 122 rather than a taper such that the diameter of the lumen increases as the lumen extends distally.
  • Step down 120 is located at a length, L 1# at or near a distal most node of vibration, e.g., about 1.8 inches, from distal end 124 of probe 110.
  • the thickness of wall 108 decreases in the distal direction at step down 120 such that the inner diameter of lumen 118 increases, e.g., from about 0.125 inch (d to about 0.15 inch (d 2 ) .
  • Step down 122 is located at a length, L 2 , at or near a node of vibration, e.g., about 3.5 inches, from step down 120.
  • the thickness of wall 108 decreases in the distal direction at step down 122 such that the inner diameter of lumen 118 increases, e.g., from about 0.1 inch (d 3 ) to about 0.125 inch (d- .
  • the change in diameter at step down 120 and at step down 122 amplifies the velocity of the acoustic wave through probe 110.
  • probe 110 can have a single step-down section.
  • probe 110 include another step down 130 located distally of step 120 for providing additional amplification of the velocity of the acoustic wave.
  • Step down 130 is located at a length, L 3 , about 1.25 inches, from distal end 124 of probe 110.
  • the thickness of wall 108 decreases in the distal direction at step down 130 such that the inner diameter of lumen 118 increases, e.g., from about 0.15 inch (d 2 ) to about 0.175 inch (d 4 ) .
  • Probe 10 can be constructed without a cap 28. Probe 10 can include an enlarged distal head such as described in Podany et al . , ULTRASONIC ASSISTED LIPOSUCTION SYSTEM, supra .
  • Probe 10 can be used in conjunction with a sheath to provide infiltration/irrigation capabilities to the ultrasonic liposuction procedure.
  • the sheath is disposed about probe 10, thereby defining a channel between probe 10 and the sheath through which the infiltration/irrigation fluid flows.
  • resonators for example, conical, exponential, catenoidal, and Fourier resonators, can be employed in ultrasonic probe 10.
  • One, two or more openings can be located in distal region 12. Multiple openings can be equally or unequally spaced about the distal region.
  • the ultrasonic probe may be configured to treat tissue other than adipose tissue.

Landscapes

  • Health & Medical Sciences (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Surgery (AREA)
  • Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Vascular Medicine (AREA)
  • General Health & Medical Sciences (AREA)
  • Biomedical Technology (AREA)
  • Veterinary Medicine (AREA)
  • Public Health (AREA)
  • Animal Behavior & Ethology (AREA)
  • Anesthesiology (AREA)
  • Hematology (AREA)
  • Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
  • Molecular Biology (AREA)
  • Medical Informatics (AREA)
  • Orthopedic Medicine & Surgery (AREA)
  • Mechanical Engineering (AREA)
  • Surgical Instruments (AREA)
  • Ultra Sonic Daignosis Equipment (AREA)

Abstract

La présente invention concerne une sonde destinée au traitement par ultrasons de tissus (tel que la liposuccion) et constituée d'un corps doté d'une paroi qui délimite une lumière. Dans une direction distale, l'épaisseur de la paroi décroît de telle façon que la section tranversale de la lumière s'agrandit. Ladite section peut diminuer par réduction conique ou bien par réduction en escalier. Ladite sonde est de forme cylindrique et son diamètre extérieur reste constant alors que l'épaisseur de la paroi décroît.
PCT/US1998/026099 1997-12-31 1998-12-09 Sonde ultrasonique de liposuccion WO1999033665A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US159497A 1997-12-31 1997-12-31
US09/001,594 1997-12-31

Publications (2)

Publication Number Publication Date
WO1999033665A1 true WO1999033665A1 (fr) 1999-07-08
WO1999033665A8 WO1999033665A8 (fr) 1999-08-19

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US1998/026099 WO1999033665A1 (fr) 1997-12-31 1998-12-09 Sonde ultrasonique de liposuccion

Country Status (1)

Country Link
WO (1) WO1999033665A1 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7056315B2 (en) 2001-11-07 2006-06-06 Eschmann Holdings Limited Liposuction apparatus with pressurized liquid spray and liposuction method using the apparatus
EP2692305A4 (fr) * 2011-06-20 2014-12-10 Olympus Medical Systems Corp Dispositif de traitement par ultrasons
EP2679182A4 (fr) * 2011-02-23 2016-08-10 Olympus Corp Sonde ultrasonore et appareil pour traitement par ultrasons

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4922902A (en) * 1986-05-19 1990-05-08 Valleylab, Inc. Method for removing cellular material with endoscopic ultrasonic aspirator
EP0509131A1 (fr) * 1991-04-19 1992-10-21 Katsuya Takasu Appareil de liposuccion
DE4203729A1 (de) * 1992-02-06 1993-08-12 Harald Dr Ing Hielscher Mechanischer amplitudenverstaerker
US5493912A (en) * 1991-08-16 1996-02-27 Krautkramer Gmbh & Co. Ultrasonic probe suitable for acoustic coupling via a water channel
US5527273A (en) * 1994-10-06 1996-06-18 Misonix, Inc. Ultrasonic lipectomy probe and method for manufacture

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4922902A (en) * 1986-05-19 1990-05-08 Valleylab, Inc. Method for removing cellular material with endoscopic ultrasonic aspirator
EP0509131A1 (fr) * 1991-04-19 1992-10-21 Katsuya Takasu Appareil de liposuccion
US5493912A (en) * 1991-08-16 1996-02-27 Krautkramer Gmbh & Co. Ultrasonic probe suitable for acoustic coupling via a water channel
DE4203729A1 (de) * 1992-02-06 1993-08-12 Harald Dr Ing Hielscher Mechanischer amplitudenverstaerker
US5527273A (en) * 1994-10-06 1996-06-18 Misonix, Inc. Ultrasonic lipectomy probe and method for manufacture

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7056315B2 (en) 2001-11-07 2006-06-06 Eschmann Holdings Limited Liposuction apparatus with pressurized liquid spray and liposuction method using the apparatus
EP2679182A4 (fr) * 2011-02-23 2016-08-10 Olympus Corp Sonde ultrasonore et appareil pour traitement par ultrasons
EP2692305A4 (fr) * 2011-06-20 2014-12-10 Olympus Medical Systems Corp Dispositif de traitement par ultrasons
US9180315B2 (en) 2011-06-20 2015-11-10 Olympus Corporation Ultrasonic treatment device and probe unit

Also Published As

Publication number Publication date
WO1999033665A8 (fr) 1999-08-19

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