FR2645009A1 - Device forming a probe for clearing a blood vessel, comprising percussion means - Google Patents

Device forming a probe for clearing a blood vessel, comprising percussion means Download PDF

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Publication number
FR2645009A1
FR2645009A1 FR8904016A FR8904016A FR2645009A1 FR 2645009 A1 FR2645009 A1 FR 2645009A1 FR 8904016 A FR8904016 A FR 8904016A FR 8904016 A FR8904016 A FR 8904016A FR 2645009 A1 FR2645009 A1 FR 2645009A1
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France
Prior art keywords
catheter
counterweight
percussion
probe
conduit
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FR8904016A
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French (fr)
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Individual
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Individual
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Priority to FR8904016A priority Critical patent/FR2645009A1/en
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    • 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
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
    • A61B17/56—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor
    • A61B17/58—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor for osteosynthesis, e.g. bone plates, screws, setting implements or the like
    • A61B17/88—Osteosynthesis instruments; Methods or means for implanting or extracting internal or external fixation devices
    • A61B17/92—Impactors or extractors, e.g. for removing intramedullary devices
    • A61B2017/922—Devices for impaction, impact element
    • 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
    • A61M25/00—Catheters; Hollow probes
    • A61M25/01—Introducing, guiding, advancing, emplacing or holding catheters
    • A61M25/0105—Steering means as part of the catheter or advancing means; Markers for positioning
    • A61M25/0116—Steering means as part of the catheter or advancing means; Markers for positioning self-propelled, e.g. autonomous robots

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

Abstract

The invention concerns a device forming a probe for clearing a blood vessel. This device comprises a catheter 24 intended to be introduced into a blood vessel 10 partially occluded by an obstruction 12, such as an atheroma, and characterised in that it comprises percussion means 16 making it possible to clear the blood vessel 10 by a percussion effect. By means of the device according to the invention it is possible to clear a blood vessel 10 without risk of perforation.

Description

Disoositif formant sonde de désobstruction de conduit sanguin,
comprenant des moyens de oercussion. Disoository forming a blood duct obstruction probe,
comprising opercussion means.

La présente invention concerne essentiellement un
dispositif formant sonde de désobstruction d'un conduit sanguin
comprenant des moyens de percussion.The present invention essentially relates to a
device forming a probe for clearing a blood conduit
comprising percussion means.

Divers dispositifs formant sonde de désobstruction d'un
conduit sanguin sont actuellement connus et disponibLes sur le
marche. Par exemple, il est commercialise par la Société américaine
Cordis Corporation un dispositif formant cathéter dénommé 'The
Kensey catreter #, comprenant des moyens de désobstruction
constitués par une came rotative disposée à L'extrémité frontale
du cathèter, qui est capable de tourner à des vitesses allant
juspuea 100 800 tr/min.Ce cathéter contient égaLement un canal
continu oans lequel du fluide sous pression s'écouLe de manière à
diriger des jets fins qui sont pulvérisés latéralement à la came
rotative contre ta paroi du conduit sanguin, ici une artère, afin
de refroidir et lubrifier la came rotative. Ces jets servent
égaLement à dilater le conduit sanguin et à maintenir la came
centrée dans le lumen (voir Radiology 1987; 165 : 387-389). Avec
le Kensey cathéter #,il existe un risque non négligeable de
réatiser des perforations du conduit sanguin.De telles
perforations sont par ailleurs reconnues avec le Kensey cathéter
On connait par ailleurs un dispositif commercialise sous
ta dénomination commerciale Simpson Periaheral Athero cath #
distribue en France par La Société Ventricules 92200 Neuilly, qui
comprend un cathéter dont la partie avant comprend un cylindre dans
leouel un piston est monté déplaçable en sens opposé à ta partie
frontale de sorte que par traction sur le cathéter disposé au
niveau d'un athérome, te piston sectionnera un copeau d'athérome
faisant saillie dans l'ouverture latérale du cylindre au niveau
d'une courbure du conduit sanguin ou s'est déposé L'athérome.Ce
dispositif est tout à fait efficace pour enlever au moins en partie
des athéromes, mais il présente te grand inconvénient de nécessiter un passage libre au travers de l'athérome ce qui ne
peut permettre de désobstruer des conduits sanguins compLètement
obstrués. Various devices forming a clearing probe for a
blood lines are currently known and available on the
market. For example, it is marketed by the American Society
Cordis Corporation a catheter device called 'The
Kensey catreter #, including means of unclogging
constituted by a rotary cam arranged at the front end
of the catheter, which is capable of rotating at speeds ranging
up to 100,800 rpm. This catheter also contains a channel
continuous in which pressurized fluid flows so as to
direct fine jets which are sprayed laterally to the cam
rotating against your wall of the blood duct, here an artery, so
to cool and lubricate the rotary cam. These jets are used
also to dilate the blood line and maintain the cam
centered in the lumen (see Radiology 1987; 165: 387-389). With
the Kensey catheter #, there is a significant risk of
make perforations in the blood duct.
perforations are also recognized with the Kensey catheter
We also know a device sold under
your trade name Simpson Periaheral Athero cath #
distributed in France by La Société Ventricules 92200 Neuilly, which
comprises a catheter, the front part of which comprises a cylinder in
leouel a piston is mounted movable in opposite direction to your part
frontal so that by pulling on the catheter arranged at the
level of an atheroma, the piston will cut an atheroma chip
protruding into the side opening of the cylinder at the level
a curvature of the blood line where the atheroma is deposited.
device is quite effective in removing at least in part
atheromas, but it has the great disadvantage of requiring a free passage through the atheroma which does not
can completely clear blood lines
obstructed.

La présente invention a donc pour but de résoudre le
nouveau problème technique consistant en La fourniture d'un
dispositif de désobstruction de conduit sanguin formant sonde
permettant de désobstruer des conduits sanguins compLètement
obstrués, c'est-à-dire qui soit efficace quelles que soient tes
conditions de désobstruction, et qui ne présente pas de risque de
perforation du conduit sanguin obstrué.The present invention therefore aims to resolve the
new technical problem consisting of the provision of a
blood conduit clearing device forming probe
to completely unblock blood conduits
clogged, that is to say that is effective whatever your
unclogging conditions, and which does not present a risk of
obstructed blood line.

La présente invention a encore pour but de résoudre ce
nouveau problème technique d'une manière particutièrement simple,
utilisable avec une grande simpLicité par Le praticien et sans
néceSste de dispositif annexe comme c'est le tas dans le cadre de
la technique connue du Kensey cathéter
La présente invention fournit pour la première fois une
sont on globale satisfaisante à ces probLèmes techniques, ce qui
constitue un progrès technique déterminant, inattendu et non
évident à l'homme de l'art. The present invention also aims to solve this
new technical problem in a particularly simple way,
usable with great simplicity by the practitioner and without
neceSste of additional device as is the heap in the context of
the known technique of the Kensey catheter
The present invention provides for the first time a
are we generally satisfied with these technical problems, which
constitutes a technical development which is decisive, unexpected and not
obvious to those skilled in the art.

Ainsi, La présente invention fournit un dispositif
formant sonde de désobstruction de conduit sanguin, tel qu'une artere, comprenant un cathéter destiné à être introduit dans ledit
conduit au moins partiellement obstrué par une obstruction, et
pourvu de moyens de désobstruction, caractérisé en ce que les moyens de désobstruction comprennent des moyens de percussion
permettant de désobstruer ledit conduit au moins partiellement
obturé.Thus, the present invention provides a device
forming a blood conduit obstruction probe, such as an artery, comprising a catheter intended to be introduced into said
leads at least partially obstructed by an obstruction, and
provided with unclogging means, characterized in that the unclogging means comprise percussion means
making it possible to unclog said conduit at least partially
closed.

Selon un mode de réalisation particuLièrement préféré de
L'invention, les moyens de percussion précités comprennent une
masselotte percutée contre un éLément disposé vers l'extremite
frontale du cathéter.According to a particularly preferred embodiment of
The invention, the aforementioned percussion means include a
counterweight struck against an element disposed towards the end
front of the catheter.

Selon une variante de réaLisation avantageuse du dispositif selon t'invention, celui-ci est caractérisé en ce qu'il
comprend des moyens d'entrainement en rotation de ta masselotte précitée contre Ledit élément qui comprend une surface non plane, de préférence crantée ou nervurée.According to an advantageous embodiment variant of the device according to the invention, it is characterized in that it
comprises means for rotating your aforementioned counterweight against said element which comprises a non-planar surface, preferably notched or ribbed.

Selon une variante dé realisation navantageuse, la masselotte précitée est également à surface active non plane en
regard ce L'élément précite percuté par la masselotte. According to a variant of a navigating embodiment, the aforementioned counterweight also has a non-planar active surface in
regard this The aforementioned element struck by the flyweight.

Selon une autre variante avantageuse du dispositif selon l'invention, ceLui-ci comprend des moyens de rappel éLastiQues unidirectionneLs de ta masselotte en direction de L'éLément percuté par la masselotte. According to another advantageous variant of the device according to the invention, this comprises unidirectional elastic return means of your counterweight in the direction of the element struck by the counterweight.

Selon une autre caractéristique avantageuse du dispositif selon L'invention, L'extrémité frontale du cathéter est arrondie pour présenter une forme en ogive. Cette extrémité frontale peut être réaLisée en un matériau à faible capacité coupante, tel qu une matière plastique. According to another advantageous characteristic of the device according to the invention, the front end of the catheter is rounded to have a pointed shape. This front end can be made of a material with a low cutting capacity, such as a plastic material.

D'autres buts, caractéristiques et avantages de l'invention apparaîtront clairement à la Lumière de la description exPlicative qui va suivre faite en référence à un mode de réalisation actuellement préféré de l'invention représenté en couPe schématique axiale à la figure unique annexée, donné simplement à titre d'illustration et qui ne saurait donc en aucune façon Limiter ta portée de l'invention. Other objects, characteristics and advantages of the invention will appear clearly in the light of the explanatory description which will follow made with reference to a currently preferred embodiment of the invention shown in axial schematic section in the single appended figure, given simply by way of illustration and which therefore cannot in any way limit your scope of the invention.

En référence à La figure unique annexée, on a représenté en coupe axiale LongitudinaLe, et de manière schématioue, un mode de réalisation actuellement préféré d'un dispositif formant sonde de désobstruction selon l'invention, en coupe Partielle représentant de manière fortement agrandie la partie frontaLe du dispositif, à L'intérieur d'un conduit sanguin 10 tel qu'une artère et a proximité d'une obstruction, ici représentée compLète, constituée par un athérome 12. With reference to the single appended figure, there is shown in longitudinal section LongitudinaLe, and schematically, a currently preferred embodiment of a device forming a clearing probe according to the invention, in partial section representing in a greatly enlarged part front of the device, inside a blood conduit 10 such as an artery and near an obstruction, here shown complete, constituted by an atheroma 12.

Le dispositif selon L'invention qui est représenté par le numéro de référence général 14 est caractérfsé en ce qu'il comprend des moyens 16 de percussion comme moyens de désobstruction du conduit 10, en permettant ainsi de désobstruer ce conduit 10. The device according to the invention which is represented by the general reference number 14 is characterized in that it comprises percussion means 16 as means for unblocking the conduit 10, thus making it possible to unclog this conduit 10.

Selon un mode de réaLisation particuLièrement préféré de l'invention, les moyens de percussion 16 comPrennent une masselotte 18 percutée contre un élement 20 destiné à être percuté disposé vers L'extrémité frontale 22 du cathéter 24. Ce cathéter 24 peut être réalisé de manière classique et être par exemple formé par une gaine plastique creuse d'un diamètre approprié pour être introduite dans le conduit sanguin destiné à être désobstrué. En généraL, te diamètre moyen du cathéter 24 sera de 3 mm, soit 9 F. According to a particularly preferred embodiment of the invention, the percussion means 16 include a counterweight 18 struck against an element 20 intended to be struck disposed towards the front end 22 of the catheter 24. This catheter 24 can be produced in a conventional manner and for example be formed by a hollow plastic sheath of a suitable diameter to be introduced into the blood conduit intended to be unclogged. In general, the average diameter of catheter 24 will be 3 mm, or 9 F.

Sa longueur pourra être de 70 cm.Its length could be 70 cm.

Le dispositif selon L'invention est encore avantageusement caractérisé en ce qu'il comprend des moyens 26 d'entraînement en rotation de la masselotte 18 contre L'éLément 20 qui comprend une surface 21 non plane, de préférence en présentant une surface 21 comportant des crans ou des nervures 28. Les moyens de mise en rotation comprennent avantageusement un axe 30 solidaire de la masselotte 18 aboutissant extérieurement au cathéter 24 à un moteur d'entrainement en rotation (non représenté) dont la vitesse de rotation est réglable. The device according to the invention is further advantageously characterized in that it comprises means 26 for rotating the flyweight 18 against the element 20 which comprises a non-planar surface 21, preferably by presenting a surface 21 comprising notches or ribs 28. The means for rotating advantageously comprise an axis 30 integral with the counterweight 18 leading outwardly to the catheter 24 to a rotary drive motor (not shown) whose speed of rotation is adjustable.

Avantageusement, la masselotte 18 présente une surface active 19 elle-meme non plane en regard de L'élément 20 en présentant par esemple des évidements 32 qui peuvent être ou non d'une profondeur voisine de la hauteur des nervures ou crans 28. La réaLisation pratiQue de ces moyens de percussion est bien connue à
L'homme de l'art ce la percussion et n'a donc pas besoin d'être décrite plus en détaiL.Advantageously, the counterweight 18 has an active surface 19 itself non-planar opposite the element 20 by presenting, for example, recesses 32 which may or may not be of a depth close to the height of the ribs or notches 28. practice of these percussion means is well known in
Those skilled in the art of percussion and therefore need not be described in more detail.

Ce dispositif comprend également avantageusement un moyen de rappel élastique unidirectionnel 34 tendant à repousser en permanence la masse;otte 18 contre l'élément 20. This device also advantageously comprises a unidirectional elastic return means 34 tending to repel the mass permanently; otte 18 against the element 20.

Selon encore une caractéristique avantageuse du dispositif selon l'invention, L'extrémité frontale 22 est arrondie en présentant avantageusement une forme en ogive Egalement, selon un mode de realisation particuLièrement avantageux de l'invention, l'ensemble du dispositif selon l'invention comprenant ta masseLotte 18 et l'élément 20 est disposé à L'intérieur d'une partie frontale tubulaire 40 essentiellement -fermée, démontable de la partie formant cathéter 24 tout en étant solidarisée à celui-ci de manière étanche. According to another advantageous characteristic of the device according to the invention, the front end 22 is rounded, advantageously having a pointed shape. Also, according to a particularly advantageous embodiment of the invention, the whole device according to the invention comprising your mass Lotte 18 and the element 20 is arranged inside a tubular front part 40 which is essentially closed, detachable from the part forming the catheter 24 while being secured thereto in a leaktight manner.

Avantageusement, L'élément 20 percuté par la masselotte 18 est réalisé en une seule pièce avec la partie tubulaire 40. La partie frontale 40 tubulaire, sensiblement fermée grâce à une cloison arrière 42 eomDortant simplement un orifice 44 pour le passage de L'arbre t'entraînement 30, peut être réalisée en un matériau à propriété non coupante, par exemple en matière plastique. On comprend ainsi que grâce au dispositif selon ('invention, il est possible de désobstruer un conduit sanguin au moins partiellement obstrué par une obstruction 12 formée par exemple par un athérome grâce à des effets de percussion obtenus par les moyens de percussion 16. La vitesse de rotation est avantageusement réglable afin de régler l'effet de percussion en fonction de l'obstruction constatée. Advantageously, the element 20 struck by the counterweight 18 is produced in a single piece with the tubular part 40. The tubular front part 40, substantially closed thanks to a rear partition 42 eomDortant simply an orifice 44 for the passage of the shaft t drive 30 can be made of a material with a non-cutting property, for example plastic. It is thus understood that thanks to the device according to the invention, it is possible to unblock a blood conduit at least partially obstructed by an obstruction 12 formed for example by an atheroma thanks to percussion effects obtained by the percussion means 16. The speed of rotation is advantageously adjustable in order to adjust the impact effect according to the obstruction observed.

On peut ainsi observer que, grâce à l'invention, on aboutira à une désobstruction d'un conduit sanguin sans risque de perforation, quelle que soit la nature de l'obstruction et notamment quelle que soit la nature physique de lfatherome.  It can thus be observed that, thanks to the invention, this will lead to a clearing of a blood conduit without risk of perforation, whatever the nature of the obstruction and in particular whatever the physical nature of the catheter.

Naturellement, l'invention comprend tous les moyens techniques constituant des équivalents techniques des moyens décrits ainsi que leurs diverses combinaisons.  Naturally, the invention includes all the technical means constituting technical equivalents of the means described as well as their various combinations.

Claims (10)

REVENDICATIONS 1. Dispositif formant sonde de désobstruction de conduit sanguin (10), tel qu'une artere, comprenant un cathéter (24) destiné à être introduit dans ledit conduit (10) au moins partiellement obture par une obturation (12) et pourvu de moyens de désobstruction, caractérisé er ce que Les moyens de désobstruction comorennent des moyens de percussion (16) permettant de désobstruer ledit conduit (10). 1. Device forming a blood conduit obstruction probe (10), such as an artery, comprising a catheter (24) intended to be inserted into said conduit (10) at least partially closed by a obturation (12) and provided with means of unblocking, characterized er that the means of unclogging comorendent percussion means (16) for unclogging said conduit (10). 2. Dispositif selon La revendication 1, caractérisé en ce que les moyens de percussion (16) comprennent une masselotte (18) percutée contre un éLément (20) destiné à être percuté disposé vers l'extrémité frontale (22) du cathéter (24). 2. Device according to Claim 1, characterized in that the percussion means (16) comprise a counterweight (18) struck against an element (20) intended to be struck disposed towards the front end (22) of the catheter (24) . 3. Dispositif selon La revendication 1 ou 2, caractérisé en ce au'il comprend des moyens (26) d'entrainerrent en rotation de la masselotte (18 > contre l'élément (20) destiné å entre percuté qui comprend une surface (21) non clan, de préférence en comprenant des crans ou nervures (28). 3. Device according to claim 1 or 2, characterized in that it comprises means (26) for driving the counterweight in rotation (18> against the element (20) intended for impacted between which comprises a surface (21 ) non-clan, preferably comprising notches or ribs (28). 4. Dispositif selon ta revendication 2 ou 3, caractérisé en ce cJe La masseLotte ( précitée présente une surface active (15) non plane, par exemple er comprenant des évidements (32X, en regard de l'élément (20) précité percuté par la masselottee (18). 4. Device according to your claim 2 or 3, characterized in that cJe La masseLotte (aforementioned has an active surface (15) not planar, for example er comprising recesses (32X, opposite the element (20) above struck by the weighted (18). 5. Dispositif selon l'une des revendications 2 à 4, caractérisé en ce qu'il comprend des moyens de rappel éLastiques unidirectionnels (34) de la masselotte contre L'élément (20).  5. Device according to one of claims 2 to 4, characterized in that it comprises unidirectional elastic return means (34) of the counterweight against the element (20). 6. Dispositif selon t'une des revendications 1 å 5, caractérisé en ce que l'extrémité frontale (22) du cathéter (24) est arrondie en présentant une forte en ogive. 6. Device according to one of claims 1 to 5, characterized in that the front end (22) of the catheter (24) is rounded with a strong warhead. 7. Dispositif seLon l'une des revendications 1 à 6, caractérisé en ce que l'ensemble du mécanisme formant les moyens de percussion (16) est disposé à L'intérieur d'une partie tubulaire (40) sensiblement fermée, montée démontable relativement au cathéter (24).  7. Device according to one of claims 1 to 6, characterized in that the entire mechanism forming the percussion means (16) is arranged inside a tubular part (40) substantially closed, mounted relatively removable catheter (24). 8. Dispositif selon la revendication 7, caractérisé en ce que t'élément (20) forme corps avec la partie frontaLe (40). 8. Device according to claim 7, characterized in that the element (20) forms a body with the front part (40). 9. Dispositif selon l'une quelconque des revendications 1 à 8, caractérisé en ce que la partie frontale (22) est réalisée en 9. Device according to any one of claims 1 to 8, characterized in that the front part (22) is made of matière non coupante, par exemple en matière plastique. non-cutting material, for example plastic. 10. Dispositif selon l'une des revendications 1 à 9, caractérisé en ce que L'obstruction (12) est un athérome.  10. Device according to one of claims 1 to 9, characterized in that the obstruction (12) is an atheroma.
FR8904016A 1989-03-28 1989-03-28 Device forming a probe for clearing a blood vessel, comprising percussion means Pending FR2645009A1 (en)

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US5234451A (en) * 1990-11-16 1993-08-10 Peter Osypka Apparatus for eliminating occlusions and stenoses in body cavities
US5346473A (en) * 1993-02-22 1994-09-13 The United States Of America As Represented By The Department Of Health And Human Services Oxy-hydrogen propelled torpedo for introducing angioplasty guide wire
US5350390A (en) * 1992-03-25 1994-09-27 Arieh Sher Device for removal of intraluminal occlusions
FR2704419A1 (en) * 1993-04-27 1994-11-04 Walz Elektronik Gmbh Device by lithotripsy.
US5467684A (en) * 1992-03-25 1995-11-21 Sher; Arieh Rotary piston driving mechanism
WO1996024297A1 (en) * 1995-02-09 1996-08-15 C.R. Bard, Inc. Angioplasty catheter used to expand and/or open up blood vessels
WO2011005971A1 (en) * 2009-07-09 2011-01-13 Cook Incorporated Spring action medical device
WO2015105930A1 (en) * 2014-01-12 2015-07-16 Upstream Peripheral Technologies Ltd. Active obstruction crossing device

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US5234451A (en) * 1990-11-16 1993-08-10 Peter Osypka Apparatus for eliminating occlusions and stenoses in body cavities
US5592866A (en) * 1992-03-25 1997-01-14 Sher; Arieh Rotary piston driving mechanism
US5350390A (en) * 1992-03-25 1994-09-27 Arieh Sher Device for removal of intraluminal occlusions
US5467684A (en) * 1992-03-25 1995-11-21 Sher; Arieh Rotary piston driving mechanism
US5806404A (en) * 1992-03-25 1998-09-15 Sher; Arieh Rotary piston driving mechanism
US5346473A (en) * 1993-02-22 1994-09-13 The United States Of America As Represented By The Department Of Health And Human Services Oxy-hydrogen propelled torpedo for introducing angioplasty guide wire
FR2704419A1 (en) * 1993-04-27 1994-11-04 Walz Elektronik Gmbh Device by lithotripsy.
DE19504261A1 (en) * 1995-02-09 1996-09-12 Krieg Gunther Angioplasty catheter for dilating and / or opening blood vessels
WO1996024297A1 (en) * 1995-02-09 1996-08-15 C.R. Bard, Inc. Angioplasty catheter used to expand and/or open up blood vessels
US6007530A (en) * 1995-02-09 1999-12-28 C.R. Bard, Inc. Angioplasty catheter for expanding and/or opening up blood vessels
WO2011005971A1 (en) * 2009-07-09 2011-01-13 Cook Incorporated Spring action medical device
US9108026B2 (en) 2009-07-09 2015-08-18 Cook Medical Technologies Llc Spring action medical device
WO2015105930A1 (en) * 2014-01-12 2015-07-16 Upstream Peripheral Technologies Ltd. Active obstruction crossing device
US10524824B2 (en) 2014-01-12 2020-01-07 Upstream Peripheral Technologies Ltd. Active obstruction crossing device

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