WO2000054670A1 - Ultrasonic surgical instrument - Google Patents
Ultrasonic surgical instrument Download PDFInfo
- Publication number
- WO2000054670A1 WO2000054670A1 PCT/FR2000/000667 FR0000667W WO0054670A1 WO 2000054670 A1 WO2000054670 A1 WO 2000054670A1 FR 0000667 W FR0000667 W FR 0000667W WO 0054670 A1 WO0054670 A1 WO 0054670A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- instrument
- surgical instrument
- sonotrode
- rear part
- irrigation liquid
- Prior art date
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Classifications
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/22—Implements 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
- A61B17/22004—Implements 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
- A61B17/22012—Implements 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
Definitions
- the 'present invention relates to a surgical instrument and more particularly to a handpiece wherein the active element consists of an animated sonotrode of an ultrasonic vibrational movement.
- the sonotrodes of these instruments are hollowed out with an axial channel through which the residues from the tissue destruction carried out by the instrument are removed, as well as the irrigation liquid. It is known in fact that the working area of the instrument is supplied with a liquid, hereinafter called irrigation liquid, the role of which is firstly to ensure the suspension of the fragments of fragmented tissue and d on the other hand to contribute to the formation of a cavitation phenomenon in this area, which makes it possible to amplify the effectiveness of the sonotrode.
- irrigation liquid hereinafter called irrigation liquid
- This supply of irrigation liquid is usually provided by a tube, external to the instrument, which is connected, by one of its ends, to suitable liquid supply means and at its other end to means of connection provided on the front part of the handpiece.
- the irrigation liquid is conveyed to the active end of the instrument by an annular space provided. between the sonotrode and an annular sheath, or cannula, which surrounds the latter.
- the object of the present invention is to remedy these drawbacks by proposing a surgical instrument in which said supply tube is integrated into the handpiece.
- the present invention thus relates to a surgical instrument consisting of an elongated cylindrical body containing a sonotrode and means for subjecting the latter to an ultrasonic vibration movement, and which is hollowed out with an axial and longitudinal through suction channel the instrument from its rear part to the front part of its sonotrode, this instrument comprising means for supplying irrigation liquid, characterized in that its rear part comprises connection means which are in communication by a channel internal to the instrument with an annular collecting chamber which is in communication with an annular space which extends to the active end of the instrument.
- connection means are connected to the collecting chamber by means of a tubular element.
- the body of the instrument comprises at least two parts, namely a main and central part and a rear part on which the electrical supply means of the instrument are arranged. , the means for supplying irrigation liquid, and the suction means, this rear part being fixed to the main part by holding means requiring no relative rotation of these two parts.
- the surgical instrument according to the invention shown in the figure consists of a body 1 in three parts, namely a main and central element 1a posterior element 1b and an anterior element 1a.
- the main element contains a driving element (no represented in the drawing) constituted in a known manner of piezoelectric pellets excited by a low frequency current which sets in motion an amplifier 3 on the front part of which is screwed a sonotrode 5.
- the posterior element 1b is fixed by gluing on the main element 1a.
- a connector 7 which is intended to be joined to a pipe, not shown in the drawing, connected to suction means.
- the connector 7 is connected to the active end of the sonotrode 5 by an axial and longitudinal channel 9.
- electrical supply means 11 are provided and are intended to connect the above-mentioned piezoelectric pads to an external low frequency current generator.
- the front element l_c of the body 1 is hollowed out on its front part of a cylindrical recess 13 which is intended to receive the rear part 15 of a cannula 17 which forms a sleeve surrounding the sonotrode 5 at a certain distance from the latter , so as to provide between its internal face and the external face of the sonotrode 5 an annular channel intended to bring to the active end of the sonotrode, that is to say its anterior end 5a, an irrigation liquid.
- the sleeve 15 comprises an O-ring 19 which is fixed in a circular groove thereof and which, on the one hand, allows maintaining the sleeve 15 in the recess 13 and sealing between the external face of the latter and the internal face of the recess 13.
- the surgical instrument comprises means for supplying irrigation liquid which are external to the body 1 of the instrument.
- the rear part lb of the body 1 comprises a connector 21 which is offset on the periphery of the element lb and which is intended to be connected to a liquid supply pipe not shown in the drawing.
- the connector 21 is crossed by a rigid metallic tube 23 which extends towards the front part of the instrument, through the main element 1a. of the body_l, and which opens into a cavity 25 which is hollowed out in the rear face of the element l_c and which is in communication, through a channel 27, with the annular channel formed between the internal face of the sleeve 15 and the external face of the sonotrode 5.
- the cavity 25 thus forms a sort of buffer tank promoting the regularity of the supply of irrigation liquid.
- Sealing means 29 are provided between the pipe 23 and the element 1a of the body 1.
- the rear element 1b will be fixed on the main element 1a. by bonding means or snap-fastening means, means allowing problem-free centering of the longitudinal holes intended to receive the pipe 23 which are provided in the rear element on the one hand and in the main element on the other hand.
- the surgical instrument according to the invention is particularly advantageous in that it allows on the one hand to avoid the presence of tubes for supplying irrigation liquid outside the body of the instrument, which represents a gene for the practitioner, on the one hand at the level of the gripping of the instrument itself and, on the other hand, at the level of the stresses that this tube exerts on the anterior part of the instrument.
- the present invention by making it possible to bring all the connection means back, namely the electrical supply means, the suction means, and the irrigation liquid supply means, allows the surgeon to have a mobility of this instrument around the rear part thereof, which was not the case for the instruments according to the prior art.
Abstract
The invention concerns an ultrasonic surgical instrument consisting of an elongated cylindrical body (1) containing a sonotrode (5) and means for subjecting it to an ultrasonic vibratory motion, and recessed with an axial and longitudinal suction channel (9) running through the instrument from its rear part (1b) up to the front part of its sonotrode (5), said instrument comprising means supplying irrigating liquid. Said instrument is characterised in that its rear part (1b) comprises connecting means (21) communicating through a passage inside the instrument with an annular collector which itself communicates with an annular space extending up to the active end of the instrument.
Description
INSTRUMENT CHIRURGICAL A ULTRASONS ULTRASONIC SURGICAL INSTRUMENT
La' présente invention concerne un instrument chirurgical et plus précisément une pièce à main dans laquelle l'élément actif est constitué d'une sonotrode animée d'un mouvement de vibration ultrasonore .The 'present invention relates to a surgical instrument and more particularly to a handpiece wherein the active element consists of an animated sonotrode of an ultrasonic vibrational movement.
De façon habituelle les sonotrodes de ces instruments sont creusées d'un canal axial par lequel on évacue les résidus provenant de la destruction des tissus effectuée par l'instrument- ainsi que le liquide d'irrigation. On sait en effet que la zone de travail de l'instrument est alimentée par un liquide, dit ci-après liquide d'irrigation, dont le rôle est d'une part d'assurer la mise en suspension des parties de tissu fragmentées et d'autre part de contribuer à la formation d'un phénomène de cavitation dans cette zone, qui permet d'amplifier l'efficacité de la sonotrode.Usually the sonotrodes of these instruments are hollowed out with an axial channel through which the residues from the tissue destruction carried out by the instrument are removed, as well as the irrigation liquid. It is known in fact that the working area of the instrument is supplied with a liquid, hereinafter called irrigation liquid, the role of which is firstly to ensure the suspension of the fragments of fragmented tissue and d on the other hand to contribute to the formation of a cavitation phenomenon in this area, which makes it possible to amplify the effectiveness of the sonotrode.
Cette alimentation en liquide d' irrigation est habituellement assurée par un tube, extérieur à l'instrument, qui est relié, par l'une de ses extrémités, à des moyens d'alimentation en liquide appropriés et à son autre extrémité à des moyens de connexion prévus sur la partie antérieure de la pièce à main. De façon connue le liquide d'irrigation est acheminé jusqu'à l'extrémité active de l'instrument par un espace annulaire prévu
entre la sonotrode et un fourreau annulaire, ou canule, qui entoure celle-ci.This supply of irrigation liquid is usually provided by a tube, external to the instrument, which is connected, by one of its ends, to suitable liquid supply means and at its other end to means of connection provided on the front part of the handpiece. In known manner, the irrigation liquid is conveyed to the active end of the instrument by an annular space provided. between the sonotrode and an annular sheath, or cannula, which surrounds the latter.
On comprend que la présence en surface de l'instrument d'un tel tube d'alimentation rende difficile une bonne préhension de celui-ci par le praticien. Par ailleurs, en raison du raccordement en partie avant de l'instrument du conduit véhiculant le liquide d'irrigation alors que l'alimentation électrique et l'évacuation des déchets se font en parie arrière de celui-ci, on crée un déséquilibre de l'instrument induisant une fatigue inutile pour le chirurgien.It is understood that the presence on the surface of the instrument of such a feed tube makes it difficult for the practitioner to grasp it properly. In addition, due to the connection in the front part of the instrument of the conduit conveying the irrigation liquid while the electrical supply and the evacuation of the waste are done at the rear of the latter, an imbalance is created between the instrument inducing unnecessary fatigue for the surgeon.
La présente invention a pour but de remédier à ces inconvénients en proposant un instrument chirurgical dans lequel ledit tube d'alimentation est intégré à la pièce à main.The object of the present invention is to remedy these drawbacks by proposing a surgical instrument in which said supply tube is integrated into the handpiece.
La présente invention a ainsi pour objet un instrument chirurgical constitué d'un corps cylindrique allongé contenant une sonotrode et des moyens pour soumettre celle-ci à un mouvement de vibration ultrasonore, et qui est creusée d'un canal d'aspiration axial et longitudinal traversant l'instrument depuis sa partie postérieure jusqu'à la partie antérieure de sa sonotrode, cet instrument comprenant des moyens d'alimentation en liquide d'irrigation, caractérisé en ce que sa partie postérieure comporte des moyens de connexion qui sont en communication par un canal interne
à l'instrument avec une chambre collecteur annulaire qui est en communication avec un espace annulaire qui s'étend jusqu'à l'extrémité active de l'instrument.The present invention thus relates to a surgical instrument consisting of an elongated cylindrical body containing a sonotrode and means for subjecting the latter to an ultrasonic vibration movement, and which is hollowed out with an axial and longitudinal through suction channel the instrument from its rear part to the front part of its sonotrode, this instrument comprising means for supplying irrigation liquid, characterized in that its rear part comprises connection means which are in communication by a channel internal to the instrument with an annular collecting chamber which is in communication with an annular space which extends to the active end of the instrument.
Dans un mode de mise en oeuvre de l'invention, les moyens de connexion sont reliés à la chambre collecteur au moyen d'un élément tubulaire.In one embodiment of the invention, the connection means are connected to the collecting chamber by means of a tubular element.
Dans un mode de mise en oeuvre intéressant de l'invention, le corps de l'instrument comporte au moins deux parties, à savoir une partie principale et centrale et une partie postérieure sur laquelle sont disposés les moyens d'alimentation électriques de l'instrument, les moyens d' alimentation en liquide d' irrigation, et les moyens d' aspiration, cette partie postérieure étant fixée sur la partie principale par des moyens de maintien ne nécessitant aucune rotation relative de ces deux parties. On décrira ci-après, à titre d'exemple non limitatif, une forme d'exécution de la présente invention, en référence aux dessins annexés sur lesquels: La figure unique est une vue en coupe partielle longitudinale d'un instrument chirurgical suivant 1 ' invention.In an advantageous embodiment of the invention, the body of the instrument comprises at least two parts, namely a main and central part and a rear part on which the electrical supply means of the instrument are arranged. , the means for supplying irrigation liquid, and the suction means, this rear part being fixed to the main part by holding means requiring no relative rotation of these two parts. An embodiment of the present invention will be described below, by way of nonlimiting example, with reference to the appended drawings in which: The single figure is a view in partial longitudinal section of a surgical instrument according to 1 ' invention.
L'instrument chirurgical suivant l'invention représenté sur la figure est constitué d'un corps 1 en trois parties à savoir un élément principal et central la un élément postérieur lb et un élément antérieur le.The surgical instrument according to the invention shown in the figure consists of a body 1 in three parts, namely a main and central element 1a posterior element 1b and an anterior element 1a.
L'élément principal la. renferme un élément moteur (non
représenté sur le dessin) constitué de façon connue de pastilles piézo-électriques excitées par un courant basse fréquence qui met en mouvement un amplificateur 3 sur la partie antérieure duquel est vissée une sonotrode 5. L'élément postérieur lb est fixé par collage sur l'élément principal la.. Au centre de la face arrière de l'élément postérieur lb se trouve un raccord 7 qui est destiné à être réuni à un tuyau, non représenté sur le dessin, relié à des moyens d'aspiration. Le raccord 7 est relié à l'extrémité active de la sonotrode 5 par un canal axial et longitudinal 9.The main element. contains a driving element (no represented in the drawing) constituted in a known manner of piezoelectric pellets excited by a low frequency current which sets in motion an amplifier 3 on the front part of which is screwed a sonotrode 5. The posterior element 1b is fixed by gluing on the main element 1a. In the center of the rear face of the rear element 1b is a connector 7 which is intended to be joined to a pipe, not shown in the drawing, connected to suction means. The connector 7 is connected to the active end of the sonotrode 5 by an axial and longitudinal channel 9.
Par ailleurs, des moyens d'alimentation électriques 11 sont prévus et sont destinés à relier les pastilles piézo-électriques précédemment mentionnées à un générateur de courant basse fréquence extérieur.Furthermore, electrical supply means 11 are provided and are intended to connect the above-mentioned piezoelectric pads to an external low frequency current generator.
L'élément antérieur l_c du corps 1 est creusé sur sa partie antérieure d'un chambrage cylindrique 13 qui est destiné à recevoir la partie postérieure 15 d'une canule 17 qui forme un manchon entourant la sonotrode 5 à une certaine distance de celle-ci, de façon à ménager entre sa face interne et la face externe de la sonotrode 5 un canal annulaire destiné à amener à l'extrémité active de la sonotrode, c'est-à-dire son extrémité antérieure 5a, un liquide d'irrigation. Le manchon 15 comporte un joint torique 19 qui est fixé dans une rainure circulaire de celui-ci et qui, d'une part, permet
d'assurer le maintien du manchon 15 dans le chambrage 13 et l'étanchéité entre la face externe de celui-ci et la face interne du chambrage 13.The front element l_c of the body 1 is hollowed out on its front part of a cylindrical recess 13 which is intended to receive the rear part 15 of a cannula 17 which forms a sleeve surrounding the sonotrode 5 at a certain distance from the latter , so as to provide between its internal face and the external face of the sonotrode 5 an annular channel intended to bring to the active end of the sonotrode, that is to say its anterior end 5a, an irrigation liquid. The sleeve 15 comprises an O-ring 19 which is fixed in a circular groove thereof and which, on the one hand, allows maintaining the sleeve 15 in the recess 13 and sealing between the external face of the latter and the internal face of the recess 13.
Suivant l'invention, l'instrument chirurgical comporte des moyens d'alimentation en liquide d'irrigation qui sont externes au corps 1 de l'instrument. Pour ce faire, la partie postérieure lb du corps 1 comprend un connecteur 21 qui est décalé sur la périphérie de l'élément lb et qui est destiné à être raccordé à un tuyau d'alimentation en liquide non représenté sur le dessin. Le connecteur 21 est traversé par un tuyau rigide et métallique 23 qui s'étend vers la partie avant de l'instrument, au travers de l'élément principal la. du corps_l, et qui débouche dans une cavité 25 qui est creusée dans la face arrière de l'élément l_c et qui est en communication, par un canal 27, avec le canal annulaire formé entre la face interne du manchon 15 et la face externe de la sonotrode 5. La cavité 25 forme ainsi une sorte de réservoir tampon favorisant la régularité de l'alimentation en liquide d'irrigation. Des moyens d'étanchéité 29 sont prévus entre le tuyau 23 et l'élément la du corps 1.According to the invention, the surgical instrument comprises means for supplying irrigation liquid which are external to the body 1 of the instrument. To do this, the rear part lb of the body 1 comprises a connector 21 which is offset on the periphery of the element lb and which is intended to be connected to a liquid supply pipe not shown in the drawing. The connector 21 is crossed by a rigid metallic tube 23 which extends towards the front part of the instrument, through the main element 1a. of the body_l, and which opens into a cavity 25 which is hollowed out in the rear face of the element l_c and which is in communication, through a channel 27, with the annular channel formed between the internal face of the sleeve 15 and the external face of the sonotrode 5. The cavity 25 thus forms a sort of buffer tank promoting the regularity of the supply of irrigation liquid. Sealing means 29 are provided between the pipe 23 and the element 1a of the body 1.
Préférentiellement, l'élément postérieur lb sera fixé sur l'élément principal la. par des moyens de collage ou des moyens d' encliquetage, moyens permettant un centrage sans problème des orifices longitudinaux
destinés à recevoir le tuyau 23 qui sont prévus dans l'élément postérieur d'une part et dans l'élément principal d'autre part.Preferably, the rear element 1b will be fixed on the main element 1a. by bonding means or snap-fastening means, means allowing problem-free centering of the longitudinal holes intended to receive the pipe 23 which are provided in the rear element on the one hand and in the main element on the other hand.
L'instrument chirurgical suivant l'invention est particulièrement intéressant en ce qu'il permet d'une part d'éviter la présence de tubes d'alimentation en liquide d'irrigation à l'extérieur du corps de l'instrument, ce qui représente une gène pour le praticien, d'une part au niveau de la préhension même de l'instrument et, d'autre part, au niveau des contraintes que ce tube exerce sur la partie antérieure de l'instrument. La présente invention en permettant de ramener à l'arrière l'ensemble des moyens de connexion, à savoir les moyens d'alimentation électriques, les moyens d'aspiration, et les moyens d'alimentation en liquide d'irrigation, permet au chirurgien de disposer d'une mobilité de cet instrument autour de la partie arrière de celui-ci, ce qui n'était pas le cas pour les instruments suivant la technique antérieure.
The surgical instrument according to the invention is particularly advantageous in that it allows on the one hand to avoid the presence of tubes for supplying irrigation liquid outside the body of the instrument, which represents a gene for the practitioner, on the one hand at the level of the gripping of the instrument itself and, on the other hand, at the level of the stresses that this tube exerts on the anterior part of the instrument. The present invention, by making it possible to bring all the connection means back, namely the electrical supply means, the suction means, and the irrigation liquid supply means, allows the surgeon to have a mobility of this instrument around the rear part thereof, which was not the case for the instruments according to the prior art.
Claims
1.- Instrument chirurgical constitué d'un corps cylindrique allongé (1) contenant une sonotrode (5) et des moyens- pour soumettre celle-ci à un mouvement de vibration ultrasonore, et qui est creusée d'un canal d'aspiration axial et longitudinal (9) traversant l'instrument depuis sa partie postérieure (lb) jusqu'à la partie antérieure de sa sonotrode (5) , cet instrument comprenant des moyens d'alimentation en liquide d'irrigation, caractérisé en ce que sa partie postérieure (lb) comporte des moyens de connexion (21) qui sont en communication par un canal interne à l'instrument avec une chambre collecteur annulaire qui est en communication avec un espace annulaire qui s'étend jusqu'à l'extrémité active de l'instrument.1.- Surgical instrument consisting of an elongated cylindrical body (1) containing a sonotrode (5) and means - for subjecting it to an ultrasonic vibration movement, and which is hollowed out with an axial suction channel and longitudinal (9) passing through the instrument from its rear part (1b) to the front part of its sonotrode (5), this instrument comprising means for supplying irrigation liquid, characterized in that its rear part ( lb) comprises connection means (21) which are in communication by a channel internal to the instrument with an annular collecting chamber which is in communication with an annular space which extends to the active end of the instrument .
2.- Instrument chirurgical suivant la revendication 1 caractérisé en ce que les moyens de connexion (21) sont reliés à la chambre collecteur (25) par un élément tubulaire (23) . 2. Surgical instrument according to claim 1 characterized in that the connection means (21) are connected to the collecting chamber (25) by a tubular element (23).
3.- Instrument chirurgical suivant l'une quelconque des revendications précédentes caractérisé en ce que son corps (1) comporte au moins deux parties, à savoir une partie principale (la), et une partie postérieure (lb) sur laquelle sont disposés des moyens d'alimentation électriques de l'instrument, les moyens d'alimentation en liquide d'irrigation, et les moyens d'aspiration, cette partie postérieure (lb) étant fixée sur la partie principale (la) par des moyens de maintien ne nécessitant aucune rotation relative de ces deux parties (la, lb) .3. Surgical instrument according to any one of the preceding claims, characterized in that its body (1) comprises at least two parts, namely a main part (la), and a posterior part (lb) on which means are arranged. electrical supply of the instrument, the means for supplying irrigation liquid, and the means suction, this rear part (lb) being fixed on the main part (la) by holding means requiring no relative rotation of these two parts (la, lb).
4.- Instrument chirurgical suivant la revendication 3 caractérisé en ce que la partie postérieure (lb) de l'instrument est fixée sur la partie principale (la) par collage. 4. Surgical instrument according to claim 3 characterized in that the posterior part (lb) of the instrument is fixed to the main part (la) by gluing.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR99/03296 | 1999-03-17 | ||
| FR9903296A FR2790939B1 (en) | 1999-03-17 | 1999-03-17 | ULTRASONIC SURGICAL INSTRUMENT |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO2000054670A1 true WO2000054670A1 (en) | 2000-09-21 |
Family
ID=9543305
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/FR2000/000667 WO2000054670A1 (en) | 1999-03-17 | 2000-03-17 | Ultrasonic surgical instrument |
Country Status (2)
| Country | Link |
|---|---|
| FR (1) | FR2790939B1 (en) |
| WO (1) | WO2000054670A1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6589191B2 (en) * | 2000-05-03 | 2003-07-08 | Kai Desinger | Manually actuable ultrasonic disintegrator for breaking up or removing human or animal tissue |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0331313A1 (en) * | 1988-02-29 | 1989-09-06 | Tulio Parisi | Ultrasonic probe for liposuction |
| EP0514810A1 (en) * | 1991-05-22 | 1992-11-25 | Antonio La Rosa | Ultrasonic dissector and detacher for atherosclerotic plaques |
| EP0554616A2 (en) * | 1992-01-24 | 1993-08-11 | Scimed Life Systems, Inc. | Apparatus for intravascular cavitation or delivery of low frequency mechanical energy |
| WO1994001047A1 (en) * | 1992-07-10 | 1994-01-20 | Baxter International Inc. | Ultrasonic angioplasty and ablative devices for treating vasospasm |
-
1999
- 1999-03-17 FR FR9903296A patent/FR2790939B1/en not_active Expired - Fee Related
-
2000
- 2000-03-17 WO PCT/FR2000/000667 patent/WO2000054670A1/en active Application Filing
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0331313A1 (en) * | 1988-02-29 | 1989-09-06 | Tulio Parisi | Ultrasonic probe for liposuction |
| EP0514810A1 (en) * | 1991-05-22 | 1992-11-25 | Antonio La Rosa | Ultrasonic dissector and detacher for atherosclerotic plaques |
| EP0554616A2 (en) * | 1992-01-24 | 1993-08-11 | Scimed Life Systems, Inc. | Apparatus for intravascular cavitation or delivery of low frequency mechanical energy |
| WO1994001047A1 (en) * | 1992-07-10 | 1994-01-20 | Baxter International Inc. | Ultrasonic angioplasty and ablative devices for treating vasospasm |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6589191B2 (en) * | 2000-05-03 | 2003-07-08 | Kai Desinger | Manually actuable ultrasonic disintegrator for breaking up or removing human or animal tissue |
Also Published As
| Publication number | Publication date |
|---|---|
| FR2790939B1 (en) | 2001-06-15 |
| FR2790939A1 (en) | 2000-09-22 |
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